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 [Search a list of Patent Appplications for class 369]   CLASS 369,DYNAMIC INFORMATION STORAGE OR RETRIEVAL
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SECTION I - CLASS DEFINITION

A. This is the generic class for processes of and apparatus for the storage or retrieval of arbitrarily variable information (as defined in the glossary below) which is retained in a storage medium by variation of a physical characteristic thereof. The information is stored or retrieved by causing or sensing a variation of a physical characteristic of the storage medium by a transducer having relative motion along a continuous path.

(1) Note. The record carrier must have continuous physical extent over the path of movement and be able to store a time-varying information signal. Static or discrete systems are classified elsewhere (see References to Other Classes, below).
(2) Note. The characteristic variation is one which must be retrievable by a transducer. Such variation producing only a directly perceptible indication (e.g., a graph), is classified elsewhere (see References to Other Classes, below).

B. This class includes processes and apparatus for the copying or editing of a storage medium within the above definition limited to such copying or editing including a step of storage or retrieval by relative motion.

C. This class includes the record carrier, per se, having particular information storage structure.

SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS

COMBINATIONS OF OTHER APPARATUS WHICH INCLUDE APPARATUS OF THIS CLASS

Significantly claimed subject matter external to this class, claimed in combination with apparatus under the class definition, is classified in the class appropriate to the external apparatus.

The combination of an audio signal producing device with the subject matter of this class is classified in this class, except the combination with telephone signal devices are classified elsewhere. (See References to Other Classes, below.)

Nominally claimed apparatus external to this class, claimed in combination with apparatus under the class definition, is classified herein. (See Subclass References to the Current Class, below.)

SUBCOMBINATIONS OF DYNAMIC INFORMATION STORAGE AND RETRIEVAL

This class includes elements and subcombinations peculiar to the subject matter of this class (e.g., a phonographic stylus and cartridge).

(1) Note. Subcombination devices of general utility such as piezoelectric transducers are classified elsewhere.

Electrical circuitry which may be used in dynamic storage or retrieval, but which is not unique thereto is found in the appropriate class for such circuitry.

Mechanisms forming subcombinations of storage or retrieval devices, are classified in the appropriate mechanical class.

DYNAMIC MAGNETIC INFORMATION STORAGE AND RETRIEVAL

Class 360 provides for information storage and retrieval by causing or sensing modification of a magnetic condition on a record. Class 360 is to be considered an integral part of Class 369 and follows the schedule hierarchy, retaining all pertinent definitions and class lines, thereof. Classification in Class 360 is evidenced by either explicit recitation or sole disclosure of magnetic structure.

ORGANIZATION OF THIS CLASS

For the organization of this class, see Subclass References to the Current Class, below.

SECTION III - SUBCLASS REFERENCES TO THE CURRENT CLASS

SEE OR SEARCH THIS CLASS, SUBCLASS:

1through 12, Combined with Independent Audio System, for a device of this class and an operatively related audio signal source of independent content. These subclasses may include specific magnetic storage or retrieval devices.
13.01through 18, Diverse Types of Storage and Retrieval, for devices having differing intended kinds of storage and retrieval. These subclasses may include specific magnetic storage or retrieval devices.
19through 52.1, Control Functions: for devices and processes for modifying or maintaining the storage or retrieval operation, other than for sequential storage medium selection.
53.1through 53.45, Monitoring of Condition: for devices which indicate a condition of a storage or retrieval device or a subcombination thereof.
59.1through 85, Special Purpose Devices: for devices designed for use with or control of diverse type devices, or particular processing of the information signal.
69+,for nominally claimed apparatus external to this class, claimed in combination with apparatus under the class definition.
99through 173, General Recording or Reproducing; for methods and devices which are concerned with either the physics of storage or retrieval or processing of the information signal.
174and 175, Signal Modification: for devices which are basically electronic in nature and are used to modify, correct, or insure the efficient storage or retrieval of information signals, and are not limited to any particular type of storage or retrieval.
176through 257, Dynamic Mechanism Subsystems: for mechanism subcombinations peculiar to storage or retrieval absent more than nominal information handling structure.
272,through 291, Structure of Storage Medium: for structure of the storage medium element having significant structure for carrying information.
292,Miscellaneous: for subject matter under the class definition and not found above.

SECTION IV - REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:

181Acoustics,   appropriate subclasses for nonelectrical sound wave handling systems and components.
235Registers,   for static or discrete systems. (Lines With Other Classes and Within This Class, "Static or Discrete Systems".
310Electrical Generator or Motor Structure,   subclasses 300+ for piezoelectric transducers, per se.
312Supports: Cabinet Structure,   subclasses 9.1+ for phonograph cabinets without storage or retrieval structure.
340Communications: Electrical,   subclass 692 for an alarm system having a sound reproducer.
346Recorders,   appropriate subclasses for storage of information on a medium in a directly human perceptible form.
346Recorders,   for variation producing only a directly perceptible indication (e.g., a graph). (Class Definition, (2) Note, above.)
352Optics: Motion Pictures,   subclasses 1+ for subject matter of this class combined with motion picture recording or projection.
353Optics: Image Projectors,   subclasses 15+ for image projectors with sound accompaniment.
355Photocopying,   subclasses 31 and 98 for copying optical sound records.
360Dynamic Magnetic Information Storage or Retrieval,   appropriate subclasses for magnetic storage or retrieval analogs to the subclasses following Class 18. (See Lines With Other Classes and Within This Class, "Dynamic Magnetic Information Storage and Retrieval," above).
365Static Information Storage and Retrieval,   for static or discrete systems. (Lines With Other Classes and Within This Class, "Static or Discrete Systems".
379Telephonic Communications,   subclasses 67.1+ for similar subject matter combined with a telephone system component; and other appropriate subclasses for electrical audio signal handling, in general. The combination of an audio signal producing device with the subject matter of this class (369) is classified in this class (369), except the combination with telephone signal devices are classified in Class 379, subclasses 67.1+. (Lines With Other Classes and Within This Class, "Combinations of Other Apparatus").
381Electrical Audio Signal Processing and Systems and Devices,   appropriate subclasses for electrical audio signal handling in general.
386Motion Video Signal Processing for Recording or Reproducing,   appropriate subclasses for recording television or video signal.
399Electrophotography,   subclass 10 for storage of data on the operation of an electrophotographic device (i.e., log report) and subclass 83 for job mode selection with memory.
455Telecommunications,   appropriate subclasses for radio devices.
505Superconductor Technology: Apparatus, Material, Process,   subclasses 150+ for high temperature (Tc > 30 K) superconducting material, particularly subclasses 170+ for dynamic information storage or retrieval.
704Data Processing: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression,   subclasses 200+ for speech signal processing involving data processing.
711Electrical Computers and Digital Processing Systems: Memory,   subclass 4 for addressing dynamic storage devices including address formation or manipulation and subclasses 111+ for data accessing and control techniques for dynamic storage devices in digital data processing systems.
850Scanning-Probe Techniques or Apparatus; Applications of Scanning-Probe Techniques, e.g., Scanning-Probe Microscopy [SPM],   subclass 62 for information storage or retrieval using scanning probe microscope.

SECTION V - GLOSSARY

INFORMATION OR INFORMATION SIGNAL

A time varying physical quantity representing desired intelligence, often an audible sound or an electrical signal.

RETRIEVAL

Production or reproduction of a stored information signal from the storage medium characteristics.

RECORD

(1) (noun) The pattern of modulation by the information signal of the variable storage medium characteristic. (2) (verb) To effect storage of an information signal. As these terms have the same spelling the terms "store", "storage medium", and variants thereof will be preferred usage in the schedule and definitions in order to avoid confusion.

RECORD CARRIER

A tangible object upon which an information signal is stored, synonymous with storage medium.

STORAGE

Retention of information in a permanent or semipermanent form, or establishing such retention.

STORAGE MEDIUM

An object having a characteristic which is, or may be, modified at positional increments in accordance with the time variation of information which is stored thereon.

TRACK OR STORAGE TRACK

A continuous path of an intelligence varied characteristic on the storage medium.

TRACKING

Following a storage track by a transducer assembly or a component thereof.

TRANSDUCER ASSEMBLY

The combination of an energy conversion device (transducer) and device coupling the energy conversion device to a storage medium so as to sense or to cause a variation of a characteristic therein.

SUBCLASSES

[List of Patents for class 369 subclass 1]    1COMBINED INDEPENDENT AUDIO SYSTEMS:
 This subclass is indented under the class definition.  Subject matter combined with another audio signal system capable of operating independently of the storage or retrieval device.
(1) Note. Such distinct apparatus includes public address systems or radios.
(2) Note. The apparatus may include an additional storage or retrieval device.
(3) Note. The storage or retrieval device may be of the magnetic type.

SEE OR SEARCH CLASS:

379Telephonic Communications,   subclasses 68+ for a dynamic audio signal recorder or reproducer combined with a telephone system or component thereof.
  
[List of Patents for class 369 subclass 2]    2Changeover between audio systems:
 This subclass is indented under subclass 1.  Subject matter having switching structure to selectively connect the independent audio systems.
  
[List of Patents for class 369 subclass 3]    3Fading between plural signals:
 This subclass is indented under subclass 2.  Subject matter wherein the switching structure includes a signal handling element which varies continuously over a period of time the ratio of two input signals to form a resultant signal which is composed solely of the first signal prior to the specified period and solely of the second signal subsequent to said period.
  
[List of Patents for class 369 subclass 4]    4Combining signals to form composite (e.g., mixing):
 This subclass is indented under subclass 1.  Subject matter wherein the independent audio signals are concurrently passed through a common signal handling element to produce a resultant of both signals.
(1) Note. The signals to be combined may be relatively or separately adjusted, and monitored to produce a desired resultant effect.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53+,for monitoring of a storage or retrieval system.
83,for editing of stored information, in general.
  
[List of Patents for class 369 subclass 5]    5One of systems having plural concurrent signal (e.g., stereophonic):
 This subclass is indented under subclass 1.  Subject matter wherein one of the systems provides a plurality of signals simultaneously.

SEE OR SEARCH THIS CLASS, SUBCLASS:

86+,for storage or retrieval systems for spatially related acoustic signals.

SEE OR SEARCH CLASS:

381Electrical Audio Signal Processing Systems and Devices,   subclasses 1+ circuitry, in general.
  
[List of Patents for class 369 subclass 6]    6Radio:
 This subclass is indented under subclass 1.  Subject matter including a system which converts radio frequency energy to audible energy.

SEE OR SEARCH CLASS:

455Telecommunications,   for radio devices, per se.
  
[List of Patents for class 369 subclass 7]    7Including recording from radio:
 This subclass is indented under subclass 6.  Subject matter wherein an audio signal output of the radio is connected to the storage input.
(1) Note. The connection is usually part of an overall selection of program sources for the loud speaker output.
  
[List of Patents for class 369 subclass 8]    8Oscillator modulated by retrieved information signal:
 This subclass is indented under subclass 6.  Subject matter including a source of oscillations controlled or otherwise modulated by the information retrieval device.
(1) Note. The oscillator is often a local oscillator in the radio circuit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

129,for a mechanical retrieval controlled oscillator.
  
[List of Patents for class 369 subclass 9]    9Mechanical phonograph:
 This subclass is indented under subclass 6.  Subject matter wherein the radio and a mechanical phonograph are coupled by a common acoustical element.
  
[List of Patents for class 369 subclass 10]    10With common cabinet for cartridge or cassette:
 This subclass is indented under subclass 6.  Subject matter wherein the radio housing includes structure unitary therewith for receiving a housing including a storage medium.
  
[List of Patents for class 369 subclass 11]    11Including separable assembly:
 This subclass is indented under subclass 6.  Subject matter wherein (a) a radio is converted to a cartridge/cassette player by combining a cartridge/cassette module therewith, or (b) a cartridge/cassette player is converted to a radio by combining a radio module therewith.
(1) Note. A radio module includes a cartridge or cassette housing with radio circuitry therein.
  
[List of Patents for class 369 subclass 12]    12Cabinet details:
 This subclass is indented under subclass 6.  Subject matter including structural details of an enclosure surrounding the components of the radio and signal retrieval system.
(1) Note. The cabinet structure must include some specific detail of the combined system, or an element thereof, otherwise such structure is classified as a cabinet, per se.

SEE OR SEARCH THIS CLASS, SUBCLASS:

75.11-82,for similar subject matter including only a storage or retrieval device.

SEE OR SEARCH CLASS:

174Electricity: Conductors and Insulators,   subclasses 50+ for boxes and housing limited by claimed structure to electrical use but having no characteristic limiting them to particular electrical equipment; and subclasses 250+ for printed circuit arrangements of general utility.
181Acoustics,   subclasses 148+ for a diaphragm mounted in a cabinet.
312Supports: Cabinet Structure,   subclasses 9.1+ for cabinets or enclosures especially designed to house phonograph instruments or records.
361Electricity: Electrical Systems and Devices,   subclasses 600+ for boxes and mountings in combination with electrical apparatus having no significant art limitation, or boxes and mounting in combination with plural diverse electrical apparatus.
  
[List of Patents for class 369 subclass 13.01]    13.01STORAGE OR RETRIEVAL BY SIMULTANEOUS APPLICATION OF DIVERSE TYPES OF ELECTROMAGNETIC RADIATION:
 This subclass is indented under the class definition.  Subject matter for information signal storage or retrieval by concurrent application of a plurality of forms of electromagnetic radiation to effect a storage medium modification or sensing, respectively.
(1) Note. For classification herein, a single storage or retrieval action (i.e., modification or sensing) must require the simultaneous application of the diverse types of electromagneticradiation. Concurrent application of diverse types of electromagnetic radiation to effect plural respective storage or retrieval actions is classified elsewhere. See search note below.
(2) Note. Nominal recitation of a plurality of forms of electro-magnetic radiation (e.g., the mere presence of the phrase "magneto-optic" or "opto-magnetic") is not sufficient for classification herein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

14,for concurrent application of diverse types of electromagnetic radiation to effect plural respective storage or retrieval actions.
  
[List of Patents for class 369 subclass 13.02]    13.02Magnetic field and light beam:
 This subclass is indented under subclass 13.01.  Subject matter wherein the simultaneous application of plurality of forms of electromagnetic radiation include a magnetic field and a light beam.
(1) Note. Nominal recitation of a magnetic field and a light beam (e.g., the mere presence of the phrase "magneto-optic" or "opto-magnetic" is not sufficient for classification herein.
  
[List of Patents for class 369 subclass 13.03]    13.03Initializing:
 This subclass is indented under subclass 13.02.  Subject matter including modification to return a storage medium to an original unmodified state.

SEE OR SEARCH THIS CLASS, SUBCLASS:

13.38,for specific detail of a storage medium layer, which may be an initializing layer.
  
[List of Patents for class 369 subclass 13.04]    13.04Erasing:
 This subclass is indented under subclass 13.02.  Subject matter including modification to remove a stored information signal.
  
[List of Patents for class 369 subclass 13.05]    13.05Reading:
 This subclass is indented under subclass 13.02.  Subject matter wherein information is being retrieved by sensing the storage medium.
  
[List of Patents for class 369 subclass 13.06]    13.06By transferring magnetic domain between layers:
 This subclass is indented under subclass 13.05.  Subject matter wherein the storage medium includes segments of defined thickness and a magnetic orientation within a storage location of an information signal is transferred between the storage medium layers.
  
[List of Patents for class 369 subclass 13.07]    13.07Three or more magnetic layers:
 This subclass is indented under subclass 13.06.  Subject matter wherein there are three or more segments of defined thickness wherein each one has a magnetic aspect.
  
[List of Patents for class 369 subclass 13.08]    13.08Changing size of magnetic domain:
 This subclass is indented under subclass 13.07.  Subject matter wherein the magnetic domain area is modified.
  
[List of Patents for class 369 subclass 13.09]    13.09Changing size of magnetic domain:
 This subclass is indented under subclass 13.06.  Subject matter wherein the magnetic domain area is modified.
  
[List of Patents for class 369 subclass 13.1]    13.1Three or more magnetic states:
 This subclass is indented under subclass 13.02.  Subject matter wherein three or more magnetic orientations on the storage medium represent the information signal.
  
[List of Patents for class 369 subclass 13.11]    13.11Positioning of transducer assembly for storage or retrieval:
 This subclass is indented under subclass 13.02.  Subject matter wherein a transducer assembly is moved to a location where modification or sensing can be performed on a particular region or track of the storage medium.

SEE OR SEARCH THIS CLASS, SUBCLASS:

24.01through 42.01, for locating information on a storage medium, per se.
  
[List of Patents for class 369 subclass 13.12]    13.12Relative positioning of transducer assemblies:
 This subclass is indented under subclass 13.02.  Subject matter wherein a magnetic field transducer assembly is moved to a location relative to a light beam transducer assembly.
  
[List of Patents for class 369 subclass 13.13]    13.13Integral transducers:
 This subclass is indented under subclass 13.02.  Subject matter wherein the optical and magnetic transducers are mounted integrally.
  
[List of Patents for class 369 subclass 13.14]    13.14Magnetic field generation:
 This subclass is indented under subclass 13.02.  Subject matter wherein at least one step or element for producing the magnetic field is particularly described.
(1) Note. The magnetic field can be modulated by an information signal or controlled to have a particular magnitude.
  
[List of Patents for class 369 subclass 13.15]    13.15Leakage magnetic field:
 This subclass is indented under subclass 13.14.  Subject matter wherein the magnetic field generation includes escape of the magnetic field through a breach.
(1) Note. The generation may include compensation of the leaked magnetic field during storage and the compensation may be during or after magnetic field generation.
(2) Note. The generation may include utilization of the leaked magnetic field for storage.
  
[List of Patents for class 369 subclass 13.16]    13.16Overwriting:
 This subclass is indented under subclass 13.14.  Subject matter wherein the modification includes replacing a stored information signal with another information signal.
  
[List of Patents for class 369 subclass 13.17]    13.17Magnetic field transducer assembly:
 This subclass is indented under subclass 13.14.  Subject matter wherein at least one element within a magnetic field transducer assembly is particularly described.
  
[List of Patents for class 369 subclass 13.18]    13.18Permanent magnet:
 This subclass is indented under subclass 13.17.  Subject matter wherein the magnetic field is generated using a piece of magnetic material that retains its magnetism after it is removed from a magnetic field.
  
[List of Patents for class 369 subclass 13.19]    13.19Rotating magnet:
 This subclass is indented under subclass 13.18.  Subject matter wherein the magnet is capable of movement about an axis.
  
[List of Patents for class 369 subclass 13.2]    13.2Operative location positioning of transducer assembly:
 This subclass is indented under subclass 13.17.  Subject matter wherein a transducer assembly is moved into or out of a location where modification or sensing can be effected.
  
[List of Patents for class 369 subclass 13.21]    13.21During load or unload of the storage medium:
 This subclass is indented under subclass 13.2.  Subject matter wherein the positioning occurs during movement of the storage medium into or out of an operative location.

SEE OR SEARCH THIS CLASS, SUBCLASS:

75.21,for loading a storage medium onto a turntable, per se.
  
[List of Patents for class 369 subclass 13.22]    13.22Magnetic field generating circuit:
 This subclass is indented under subclass 13.14.  Subject matter wherein the magnetic field is generated using a closed path capable of being followed by an electric current.
  
[List of Patents for class 369 subclass 13.23]    13.23Conductor coil:
 This subclass is indented under subclass 13.22.  Subject matter wherein the circuit includes a wound spiral of two or more turns of insulated wire used to introduce inductance into the storage medium.
  
[List of Patents for class 369 subclass 13.24]    13.24Light beam generation:
 This subclass is indented under subclass 13.02.  Subject matter wherein at least one step or element for producing the light beam is particularly described.
(1) Note. The light beam can be modulated by an information signal or controlled to have a particular magnitude.
  
[List of Patents for class 369 subclass 13.25]    13.25Overwriting:
 This subclass is indented under subclass 13.24.  Subject matter wherein the modification includes replacing a stored information signal with another information signal.
  
[List of Patents for class 369 subclass 13.26]    13.26Setting light beam power level:
 This subclass is indented under subclass 13.24.  Subject matter wherein a desired light beam magnitude is generated.
  
[List of Patents for class 369 subclass 13.27]    13.27Based on referenced test signal:
 This subclass is indented under subclass 13.26.  Subject matter wherein the magnitude is generated based on a signal that is stored and subsequently retrieved for an evaluating purpose.
  
[List of Patents for class 369 subclass 13.28]    13.28Multiple light beams:
 This subclass is indented under subclass 13.24.  Subject matter wherein a plurality of light beams is generated.
  
[List of Patents for class 369 subclass 13.29]    13.29Polarized light beam:
 This subclass is indented under subclass 13.24.  Subject matter wherein a direction of the electric field component of the light beam is modified.
  
[List of Patents for class 369 subclass 13.3]    13.3Plural polarization:
 This subclass is indented under subclass 13.29.  Subject matter wherein the light beam includes more than one direction of the electric field component.
(1) Note. The plural polarization can be S and P polarization components of a light beam.
  
[List of Patents for class 369 subclass 13.31]    13.31Linear polarization:
 This subclass is indented under subclass 13.29.  Subject matter wherein the electric field component is oriented in one direction.
  
[List of Patents for class 369 subclass 13.32]    13.32Light beam transducer assembly:
 This subclass is indented under subclass 13.24.  Subject matter wherein at least one element within a light beam transducer assembly is particularly described.
  
[List of Patents for class 369 subclass 13.33]    13.33Near field optic:
 This subclass is indented under subclass 13.32.  Subject matter wherein the light beam transducer is placed at a closest distance to the storage medium.
(1) Note. The "closest distance" is less than or equal to a half wavelength of the laser beam.
  
[List of Patents for class 369 subclass 13.34]    13.34In compact size assembly:
 This subclass is indented under subclass 13.02.  Subject matter wherein an aspect of an apparatus is reduced in size.
  
[List of Patents for class 369 subclass 13.35]    13.35Specific detail of recording medium:
 This subclass is indented under subclass 13.02.  Subject matter having at least one element of the storage medium particularly described.
(1) Note. A storage medium, per se (i.e., not claimed in combination with application of a magnetic field and a light beam) is classified elsewhere. See search notes below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

275.2,for magneto-optic storage medium, per se, with specific detail of information bearing track structure.

SEE OR SEARCH CLASS:

428Stock Material or Miscellaneous Articles,   subclasses 817 through 825.1for magneto-optic storage medium, per se, with specific composition of materials or physical chemistry; and subclass 848.9 for magneto-optic media disk substrate, per se, with specific composition of materials or physical chemistry.
  
[List of Patents for class 369 subclass 13.36]    13.36In protective jacket:
 This subclass is indented under subclass 13.35.  Subject matter wherein the storage medium is surrounded by a protective enclosure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

77.11and 77.21, for storage medium protective jackets, per se.
  
[List of Patents for class 369 subclass 13.37]    13.37Tape or card:
 This subclass is indented under subclass 13.35.  Subject matter wherein the storage medium is a continuous narrow, flexible strip or of flat geometric form.
(1) Note. Magnetic storage on or retrieval from a card not involving a light beam is not classified herein. See search note below.

SEE OR SEARCH CLASS:

360Dynamic Magnetic Information Storage or Retrieval,   subclass 2 for magnetic storage on or retrieval from a card having diverse utility.
  
[List of Patents for class 369 subclass 13.38]    13.38Specific detail of layer (e.g., bias or initializing layers, etc.):
 This subclass is indented under subclass 13.35.  Subject matter having an aspect of a segment of defined thickness of the storage medium particularly described.
(1) Note. The layer can be a bias layer, initializing layer, cut-off layer, heat-sink layer, or shield layer.
  
[List of Patents for class 369 subclass 13.39]    13.39Plural distinct storage layers:
 This subclass is indented under subclass 13.38.  Subject matter including more than one segment of defined thickness for distinct storage of information signals.
(1) Note. The plural distinct storage layers can be on opposite sides of the storage medium.
  
[List of Patents for class 369 subclass 13.4]    13.4Plural layers having particular order:
 This subclass is indented under subclass 13.38.  Subject matter including more than one segment of defined thickness having particularly described arrangement.
  
[List of Patents for class 369 subclass 13.41]    13.41Plural magnetic layers (e.g., recording and reproducing layers):
 This subclass is indented under subclass 13.38.  Subject matter including more than one segment of defined thickness wherein each one has a magnetic aspect.

SEE OR SEARCH CLASS:

428Stock Material or Miscellaneous Articles,   subclasses 817 through 825.1for magneto-optic storage medium, per se, with specific chemical composition or physical chemistry.
  
[List of Patents for class 369 subclass 13.42]    13.42Three or more magnetic layers (e.g., recording, intermediate, and reproducing layers, etc.):
 This subclass is indented under subclass 13.41.  Subject matter wherein there are three segments, each having a magnetic aspect.

SEE OR SEARCH CLASS:

428Stock Material or Miscellaneous Articles,   subclasses 819 through 819.4for magneto-optic storage medium having a unit structure of three or more differing magnetic layers in series, per se, having a specific chemical composition or physical chemistry.
  
[List of Patents for class 369 subclass 13.43]    13.43In-plane magnetization layer:
 This subclass is indented under subclass 13.42.  Subject matter wherein a segment has magnetic orientation in a direction parallel to a surface of the storage medium.
  
[List of Patents for class 369 subclass 13.44]    13.44Exchange-coupling magnetization layer:
 This subclass is indented under subclass 13.42.  Subject matter including a segment for interacting with another segment to induce a magnetic orientation.
  
[List of Patents for class 369 subclass 13.45]    13.45Rare earth or metal alloy:
 This subclass is indented under subclass 13.42.  Subject matter wherein the segment includes a metallic element of atomic numbers 57 through 71 or a homogeneous mixture of electropositive elements.

SEE OR SEARCH CLASS:

428Stock Material or Miscellaneous Articles,   subclasses 822.3 through 822.5for magneto-optic storage medium stock, per se, having rare earth in single magneto-optic magnetic layer.
  
[List of Patents for class 369 subclass 13.46]    13.46Temperature or coercivity:
 This subclass is indented under subclass 13.42.  Subject matter wherein the aspect involves the degree of heat or magnetic sensitivity of the segment.
(1) Note. The temperature can be room temperature, Curie temperature, or a compensated temperature.
  
[List of Patents for class 369 subclass 13.47]    13.47Magnetic domain wall:
 This subclass is indented under subclass 13.42.  Subject matter wherein the aspect involves a boundary between magnetic domains of the segment.
(1) Note. The aspect may involve a boundary position or energy level.
  
[List of Patents for class 369 subclass 13.48]    13.48In-plane magnetization layer:
 This subclass is indented under subclass 13.41.  Subject matter wherein a segment has magnetic orientation in a direction parallel to a surface of the storage medium.
  
[List of Patents for class 369 subclass 13.49]    13.49Exchange-coupling magnetization layer:
 This subclass is indented under subclass 13.41.  Subject matter including a segment for interacting with another segment to induce a magnetic orientation.

SEE OR SEARCH CLASS:

428Stock Material or Miscellaneous Articles,   subclasses 817 through 825.1for magneto-optic storage medium, per se, having a specific chemical composition or physical chemistry.
  
[List of Patents for class 369 subclass 13.5]    13.5Rare earth or metal alloy:
 This subclass is indented under subclass 13.41.  Subject matter wherein the segment includes a metallic element of atomic numbers 57 through 71 or a homogeneous mixture of electropositive elements.

SEE OR SEARCH CLASS:

428Stock Material or Miscellaneous Articles,   subclasses 822.3 through 822.5for magneto-optic storage medium stock, per se, having rare earth in single magneto-optic magnetic layer.
  
[List of Patents for class 369 subclass 13.51]    13.51Temperature or coercivity:
 This subclass is indented under subclass 13.41.  Subject matter wherein the aspect involves the degree of heat or magnetic sensitivity of the segment.
(1) Note. The temperature can be room temperature, Curie temperature, or a compensated temperature.
  
[List of Patents for class 369 subclass 13.52]    13.52Magnetic domain wall:
 This subclass is indented under subclass 13.41.  Subject matter wherein the aspect involves a boundary between magnetic domains of the segment.
(1) Note. The aspect may involve a boundary position or energy level.
  
[List of Patents for class 369 subclass 13.53]    13.53Thickness of layer:
 This subclass is indented under subclass 13.38.  Subject matter wherein the aspect is the width of the segment.
(1) Note. For example, thickness of substrate, dielectric, reflective, protective, or transmitting layer.
  
[List of Patents for class 369 subclass 13.54]    13.54Recording mark dimension:
 This subclass is indented under subclass 13.35.  Subject matter wherein the element is a distinct storage location of the information signal on the storage medium and the shape and size of the distinct storage location is particularly described.
(1) Note. The recording mark has a particular dimension (i.e., shape and size) that is caused by application of the magnetic field and light beam.

SEE OR SEARCH THIS CLASS, SUBCLASS:

275.4,for specific detail of storage medium pit structure, per se.
  
[List of Patents for class 369 subclass 13.55]    13.55Land or groove track:
 This subclass is indented under subclass 13.35.  Subject matter wherein the element is a continuous narrow raised surface or channel on the storage medium.

SEE OR SEARCH THIS CLASS, SUBCLASS:

275.4,for specific detail of storage medium groove structure, per se.
  
[List of Patents for class 369 subclass 13.56]    13.56STORAGE DIFFERENT FROM RETRIEVAL (E.G., OPTICAL RECORDING AND MAGNETIC REPRODUCTION):
 This subclass is indented under the class definition.  Subject matter wherein storage medium sensing for signal retrieval is diverse from storage medium modification for signal storage.
(1) Note. The term "diverse" refers to physically different changes (e.g., magnetic, optical, mechanical).
(2) Note. For classification herein, the diverse types of storage and retrieval must be claimed together. Alternative embodiments of an invention claimed separately are classified elsewhere.
  
[List of Patents for class 369 subclass 14]    14SIMULTANEOUS DIVERSE TYPES OF STORAGE OR RETRIEVAL:
 This subclass is indented under the class definition.  Subject matter for information signal storage by concurrent diverse types of storage medium modification, or information signal retrieval by concurrent diverse types of storage medium sensing.

SEE OR SEARCH THIS CLASS, SUBCLASS:

93+,for plural, spatially distinct tracks stored or retrieved by the same type of storage or retrieval.
  
[List of Patents for class 369 subclass 15]    15ALTERNATIVE DIVERSE TYPES OF STORAGE OR RETRIEVAL:
 This subclass is indented under the class definition.  Subject matter for information signal storage by selection of one of diverse types of storage medium modification, or for the information signal retrieval by selection of one of diverse types of storage medium sensing.
(1) Note. Exemplary of such subject matter would be a recording or reproducing device for an elongate web record carrier having both magnetic and radiation transducers which may be alternatively switched into a circuit for use with either a photos:graphic or magnetic tape.
  
[List of Patents for class 369 subclass 16]    16MECHANICAL PRODUCTION OF OPTICAL STORAGE TRACK:
 This subclass is indented under the class definition.  Subject matter in which information is mechanically recorded onto a storage medium to produce variations in the transmissivity or reflectivity of the storage medium.
(1) Note. This subject matter often includes mechanical cutting of an opaque layer covering the storage medium.
(2) Note. This subject matter often includes mechanical cutting of an opaque layer covering the storage medium.

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13.02through 13.56, for this subject matter combined with claimed optical reading of the storage medium.
127+,for mechanical information storage, in general.
  
[List of Patents for class 369 subclass 17]    17TRACK CONVERSION:
 This subclass is indented under the class definition.  Subject matter including changing from a first type to a second type of track having the same signal content on the same storage medium.
(1) Note. Included herein is conversion from an optical track to a magnetic track.

SEE OR SEARCH THIS CLASS, SUBCLASS:

85,for copying a sound track onto a separate storage medium of a different type.
  
[List of Patents for class 369 subclass 18]    18OPTICAL READING OF MECHANICAL RECORD:
 This subclass is indented under the class definition.  Subject matter including retrieval by optical sensing of a mechanically recorded track.
(1) Note. Included herein are devices with photosensitive pickups for grooved records.
  
[List of Patents for class 369 subclass 19]    19CONTROL BY TIMER OR EXTERNAL EXTRANEOUS CONDITION:
 This subclass is indented under the class definition.  Subject matter including modification of an operating condition of the storage or retrieval device by apparatus responsive to time or to a condition other than an information parameter and external to the storage or retrieval device.

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47+,for control of a storage or retrieval operation by an information related parameter.
  
[List of Patents for class 369 subclass 20]    20By diverse art device:
 This subclass is indented under subclass 19.  Subject matter wherein the operating condition is controlled by apparatus having utility other than to perfect the storage or retrieval of a signal.
(1) Note. Detailed structure of the diverse art device is classified therewith.

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70,for control of diverse art device by storage or retrieval device.

SEE OR SEARCH CLASS:

340Communications: Electrical,   subclass 692 for a sound reproducer controlled by an alarm circuit.
434Education and Demonstration,   subclass 366 for abnormal condition simulating devices.
  
[List of Patents for class 369 subclass 21]    21In vehicle or elevator:
 This subclass is indented under subclass 19.  Subject matter wherein the storage or retrieval device is located in a movable passenger carrying compartment.
(1) Note. The controlling condition may be external to the vehicle.

SEE OR SEARCH CLASS:

340Communications: Electrical,   subclasses 139+ and 901+ for a communication device for an elevator or a vehicle, in general.
  
[List of Patents for class 369 subclass 22]    22Audible indicator:
 This subclass is indented under subclass 20.  Subject matter wherein the retrieval device is an audible reproducer, the content of the reproduced sound information being the value, generally numerical, of the time or condition to which the device responds.

SEE OR SEARCH CLASS:

379Telephonic Communications,   subclasses 67+ for similar subject matter in a telephone system.
  
[List of Patents for class 369 subclass 23]    23Talking clock:
 This subclass is indented under subclass 22.  Subject matter wherein the reproduced sound information is the time.

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368Horology: Time Measuring Systems or Devices,   subclass 63 for talking clocks including details of the time determining device.
  
[List of Patents for class 369 subclass 24.01]    24.01INFORMATION LOCATION OR REMOTE OPERATOR ACTUATED CONTROL:
 This subclass is indented under the class definition.  Subject matter including control of a storage or retrieval apparatus associated with physical location of the information on a storage medium or by an operator from a geographically spaced location.
(1) Note. This subclass does not include conventional control of signal processing such as on-off or volume controls.

SEE OR SEARCH CLASS:

340Communications: Electrical,   subclasses 1.1 through 16.1for electrical remote control transmission systems of general utility.
  
[List of Patents for class 369 subclass 25.01]    25.01Dictation or transcribing:
 This subclass is indented under subclass 24.01.  Subject matter particularly adapted to audibly record or reproduce the spoken intended contents of a document.
(1) Note. Examples of such adaptation are facilitating correction of stored audio information subsequent to storage and prior to retrieval or facilitating retrieval and modification thereof (e.g., backspacing).
(2) Note. A storage or retrieval device designated as for dictation or transcription, merely by name and absent structure therefor, is not classified herein. See search notes below.

SEE OR SEARCH CLASS:

379Telephonic Communications,   subclass 75 for remote dictation over a telephone.
704Data Processing: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression,   subclasses 270 through 278for particular application of speech signal processing which may include dictation or transcription.
  
[List of Patents for class 369 subclass 26.01]    26.01Privacy:
 This subclass is indented under subclass 25.01.  Subject matter with provision for preventing access to a dictation circuit or signal, or to the corresponding portions of the storage medium.
(1) Note. Examples include antibackspace tones and busy or in use signals.
  
[List of Patents for class 369 subclass 27.01]    27.01With access to or marking of specified locations (e.g., indexing):
 This subclass is indented under subclass 25.01.  Subject matter having structure to indicate the location of the current, or another designated, positioned increment along the storage medium.
(1) Note. The marking can be indexing.

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53.1through 53.45, for condition indication and monitoring of a storage or retrieval device, in general.
  
[List of Patents for class 369 subclass 28.01]    28.01By stored additional signal (e.g., tone):
 This subclass is indented under subclass 27.01.  Subject matter wherein the indication is given by a signal stored in the same manner as the information signal.
(1) Note. Such indicating signals are often reproduced as audible tones.
  
[List of Patents for class 369 subclass 29.01]    29.01Remote station:
 This subclass is indented under subclass 25.01.  Subject matter wherein the source of the audible information to be stored and control equipment is located remotely from and connected by an audible signal transmitting line to the storage device.
(1) Note. The source is often a telephone-type handset.
(2) Note. The connecting line is often similar to a telephone system connecting a plurality of audible information devices or of storage devices. However, classification is herein unless the system is recited to be a telephone system, or conversation is possible over such a system (e.g., between handsets).

SEE OR SEARCH CLASS:

379Telephonic Communications,   subclass 75 for remote dictation over a telephone system.
  
[List of Patents for class 369 subclass 29.02]    29.02Portable device:
 This subclass is indented under subclass 25.01.  Subject matter wherein the dictation or transcribing is performed using a device that is operational while being carried or moved.
  
[List of Patents for class 369 subclass 30.01]    30.01Selective addressing of storage medium (e.g., programmed access):
 This subclass is indented under subclass 24.01.  Subject matter wherein the control function includes storage on or retrieval from a designated storage medium element or portion thereof.
(1) Note. The term "random access" is sometimes used for such device. However, such usage should be carefully distinguished from random selection or indexing, or selection absent prior designation, which is not classified herein. See search notes below.
(2) Note. The selective addressing can be a programmed access.
(3) Note. The storage medium can be one of a plurality of storage medium elements (e.g., a jukebox).

SEE OR SEARCH THIS CLASS, SUBCLASS:

53.4,for manual tone arm positioning adjuncts.
66and 98, for random selection or indexing, or selection absent prior designation.
178.01,for selection of storage medium absent designation.

SEE OR SEARCH CLASS:

360Dynamic Magnetic Information Storage or Retrieval,   subclasses 78.01 through 78.15for random access of a magnetic record carrier.
434Education and Demonstration,   appropriate subclasses, particularly subclasses 322 through 364for nominal audio reproduction combined with recording of or controlling by operator response to instruction, or combined with audible description corresponding to displayed visual matter, other than a display or listing.
  
[List of Patents for class 369 subclass 30.02]    30.02Novelty device (e.g., talking doll):
 This subclass is indented under subclass 30.01.  Subject matter wherein the storage medium is associated with a novelty device.
(1) Note. Usually the novelty device constitutes the housing for a sound reproducer. Thus, a doll with a pull string by which the reproducer will emit one of several messages as selected by the direction of a pull on the string (e.g., a talking doll).

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63through 68, for similar subject matter absent selective addressing.

SEE OR SEARCH CLASS:

446Amusement Devices: Toys,   subclasses 299 and 302 for significant structure of an amusement device having sounding means such as phonograph or tape.
  
[List of Patents for class 369 subclass 30.03]    30.03Of optical storage medium:
 This subclass is indented under subclass 30.01.  Subject matter wherein the selective addressing is of a storage medium in which storage or retrieval is performed by using a light beam.
  
[List of Patents for class 369 subclass 30.04]    30.04Using recorded information indicative of storage medium contents:
 This subclass is indented under subclass 30.03.  Subject matter wherein the selective addressing includes using specific recorded information that identifies the information stored on the storage medium.
  
[List of Patents for class 369 subclass 30.05]    30.05Copying or editing:
 This subclass is indented under subclass 30.04.  Subject matter including retrieving information from one storage medium to subsequently store on another distinct storage medium or deleting, adding, or rearranging portions of a stored information signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47.12,for copying using a recorded or reproduced control signal and absent selective addressing.
47.13,for editing of stored information using a recorded or reproduced control signal and absent selective addressing.
83,for editing of stored information absent selective addressing.
84,for copying absent selective addressing.
  
[List of Patents for class 369 subclass 30.06]    30.06Plural storage medium elements (e.g., "juke box"):
 This subclass is indented under subclass 30.04.  Subject matter wherein the selective addressing is of one of a plurality of separate storage medium elements.
  
[List of Patents for class 369 subclass 30.07]    30.07Specified contents information modification processing:
 This subclass is indented under subclass 30.04.  Subject matter including detail of handling changing the contents information.
  
[List of Patents for class 369 subclass 30.08]    30.08Designating particular order of contents (e.g., sequential playing back by playlist):
 This subclass is indented under subclass 30.04.  Subject matter including using specific recorded information that identifies the order in which the information is to be selectively addressed.
(1) Note. The designating initiates sequential addressing operations of medium portions.
(2) Note. The order of contents can be in the form of a recorded playlist.
  
[List of Patents for class 369 subclass 30.09]    30.09Specified order of contents information modification processing:
 This subclass is indented under subclass 30.08.  Subject matter including detail of handling changing the order of contents information.
  
[List of Patents for class 369 subclass 30.1]    30.1Transducer movement control using recorded information indicative of location of information (e.g., track address):
 This subclass is indented under subclass 30.03.  Subject matter wherein the selective addressing includes control of a transducer movement using specific recorded information that identifies the position of the designated storage medium portion.
(1) Note. The recorded information can be a track address.
  
[List of Patents for class 369 subclass 30.11]    30.11Location information correction:
 This subclass is indented under subclass 30.1.  Subject matter including eliminating error in the location information.
  
[List of Patents for class 369 subclass 30.12]    30.12Particular track portion:
 This subclass is indented under subclass 30.1.  Subject matter wherein the storage medium portion is a track and the location information identifies a particular part of the track.
(1) Note. The particular part of the track can be a sector and the recorded information can be a sector address.
  
[List of Patents for class 369 subclass 30.13]    30.13Counting tracks traversed by transducer:
 This subclass is indented under subclass 30.1.  Subject matter wherein the storage medium portion is a track and the selective addressing includes indicating a number of tracks crossed by the transducer.
  
[List of Patents for class 369 subclass 30.14]    30.14Count correction:
 This subclass is indented under subclass 30.13.  Subject matter including eliminating error in the track count.
  
[List of Patents for class 369 subclass 30.15]    30.15Multiple movement control modes:
 This subclass is indented under subclass 30.1.  Subject matter including a plurality of distinct means or steps for controlling movement to the designated storage medium portion.
(1) Note. The control modes can be for coarse and fine seeking.
  
[List of Patents for class 369 subclass 30.16]    30.16Specific detail of terminating:
 This subclass is indented under subclass 30.15.  Subject matter including specific means or steps performed at the end of controlling movement to the designated storage medium portion.
  
[List of Patents for class 369 subclass 30.17]    30.17Transducer velocity control:
 This subclass is indented under subclass 30.1.  Subject matter including control of transducer movement speed to the designated storage medium portion.
  
[List of Patents for class 369 subclass 30.18]    30.18Electrical information signal processing:
 This subclass is indented under subclass 30.03.  Subject matter including detail of handling the information signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

99through 175, for information signal processing absent selective addressing.
  
[List of Patents for class 369 subclass 30.19]    30.19Copying or editing:
 This subclass is indented under subclass 30.18.  Subject matter including retrieving information from one storage medium to subsequently store on another distinct storage medium or deleting, adding, or rearranging portions of a stored information signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47.12,for copying using a recorded or reproduced control signal and absent selective addressing.
47.13,for editing of stored information using a recorded or reproduced control signal and absent selective addressing.
83,for editing of stored information absent selective addressing.
84,for copying absent selective addressing.
  
[List of Patents for class 369 subclass 30.2]    30.2Plural storage medium elements:
 This subclass is indented under subclass 30.18.  Subject matter wherein the selective addressing is of one of a plurality of separate storage medium elements.
  
[List of Patents for class 369 subclass 30.21]    30.21Monitoring signal error or verification:
 This subclass is indented under subclass 30.18.  Subject matter including indicating the correctness or verification state of the information signal.
  
[List of Patents for class 369 subclass 30.22]    30.22Correction of error:
 This subclass is indented under subclass 30.21.  Subject matter including means or steps to eliminate an error.
  
[List of Patents for class 369 subclass 30.23]    30.23Buffering:
 This subclass is indented under subclass 30.18.  Subject matter including use of supplemental storage means for holding the information signal.
  
[List of Patents for class 369 subclass 30.24]    30.24Abnormal condition or changing mode of system:
 This subclass is indented under subclass 30.18.  Subject matter including a system operation condition whereby storage or retrieval is undesirable or a change in an operating mode of the system.
  
[List of Patents for class 369 subclass 30.25]    30.25Auxiliary information:
 This subclass is indented under subclass 30.18.  Subject matter wherein supplemental recorded or reproduced information is processed.
(1) Note. The auxiliary information includes subcode data (e.g., Q-data or N-data, address data, header, TOC, sync, or clock).
  
[List of Patents for class 369 subclass 30.26]    30.26Remote operating mode control:
 This subclass is indented under subclass 30.03.  Subject matter including remote actuated control of change of operating mode of the system.
  
[List of Patents for class 369 subclass 30.27]    30.27Electrical control signal processing:
 This subclass is indented under subclass 30.03.  Subject matter including detail of handling of an electrical signal which affects the operation of storage medium element or portion selection.
(1) Note. The electrical control signal is a signal other than a signal recorded on or reproduced from the storage medium.

SEE OR SEARCH THIS CLASS, SUBCLASS:

30.04through 30.25, for selective addressing using or including processing of a signal recorded on or reproduced from the storage medium.

SEE OR SEARCH CLASS:

340Communications: Electrical,   subclasses 4.37 and 4.4 for similar subject matter absent structure detail of signal storage.
  
[List of Patents for class 369 subclass 30.28]    30.28Plural storage medium elements:
 This subclass is indented under subclass 30.27.  Subject matter wherein the selective addressing is of one of a plurality of separate storage medium elements.
  
[List of Patents for class 369 subclass 30.29]    30.29Matching control signal:
 This subclass is indented under subclass 30.28.  Subject matter wherein the control signal is compared to determine a close counterpart.
  
[List of Patents for class 369 subclass 30.3]    30.3Of information indicative of contents or particular order of contents:
 This subclass is indented under subclass 30.28.  Subject matter wherein the control signal includes specific information that identifies the information stored on the storage medium elements or identifies the order in which the information is to be selectively addressed.
(1) Note. The contents information can be an ID code or reference information (e.g., a bar code) or indicate a type of storage medium.
  
[List of Patents for class 369 subclass 30.31]    30.31For operation of storage medium gripper, accessor, or transfer member:
 This subclass is indented under subclass 30.28.  Subject matter wherein the control signal is processed to operate a device that holds or causes movement from one location to another of the storage medium.
  
[List of Patents for class 369 subclass 30.32]    30.32For record medium loading or ejecting:
 This subclass is indented under subclass 30.28.  Subject matter wherein the control signal is processed to cause movement of the storage medium from an operative location to an inoperative location.
  
[List of Patents for class 369 subclass 30.33]    30.33For radial array positioning of unitary plural storage medium carrier:
 This subclass is indented under subclass 30.28.  Subject matter wherein the control signal is processed to orient an integrated mechanical array which holds the storage medium elements in a nonparallel pattern or spacing, which pattern may have characteristic lines with a common center, such that the storage medium elements are readily accessible for selection.
(1) Note. The radial array can be a carousel.
  
[List of Patents for class 369 subclass 30.34]    30.34For linear array positioning of unitary plural storage medium carrier (e.g., horizontal or vertical positioning):
 This subclass is indented under subclass 30.28.  Subject matter wherein the control signal is processed to orient an integrated mechanical array which holds the storage medium elements in parallel along a common axis, which array is movable along such axis, such that the storage medium elements are readily accessible for selection.
  
[List of Patents for class 369 subclass 30.35]    30.35For relative positioning between storage medium elements:
 This subclass is indented under subclass 30.28.  Subject matter wherein the control signal is processed to provide a particular location for a storage medium relative to another storage medium.
  
[List of Patents for class 369 subclass 30.36]    30.36Abnormal condition or changing mode of system:
 This subclass is indented under subclass 30.27.  Subject matter including a system operation condition whereby storage or retrieval is undesirable or a change in an operating mode of the system.
  
[List of Patents for class 369 subclass 30.37]    30.37Of particular order of contents:
 This subclass is indented under subclass 30.27.  Subject matter wherein the control signal identifies the order in which the information is to be selectively addressed.
(1) Note. The order of contents is indicative of sequential addressing operations of medium portions.
(2) Note. The order of contents can be provided by a bar code.
  
[List of Patents for class 369 subclass 30.38]    30.38Plural optical storage media in library system:
 This subclass is indented under subclass 30.03.  Subject matter wherein multiple storage mediums are contained within a storage system for recording or reproducing purposes wherein storage medium drives contained therein are easily removed by the user from the storage system and are each encased within individual housing enclosures.
  
[List of Patents for class 369 subclass 30.39]    30.39Modular library system:
 This subclass is indented under subclass 30.38.  Subject matter wherein a housing of the storage system is divided into and contains distinct, prefabricated subsections that, when combined, form one or more operational storage systems.
  
[List of Patents for class 369 subclass 30.4]    30.4Plural media are discs stored in cartridges:
 This subclass is indented under subclass 30.38.  Subject matter wherein the multiple storage mediums are each a plate-shaped planar recording medium contained within a protective casing or sleeve for covering the recording medium during use.
  
[List of Patents for class 369 subclass 30.41]    30.41Having specified disc rack:
 This subclass is indented under subclass 30.4.  Subject matter including specifics of a disc cartridge housing that separates and stores the disc cartridges within the housing of the storage system.
  
[List of Patents for class 369 subclass 30.42]    30.42Having particular removable magazine:
 This subclass is indented under subclass 30.4.  Subject matter including specifics of a disc cartridge housing that holds multiple disc cartridges in a single contained unit wherein the disc cartridge housing is easily inserted into and ejected from the storage system by a user.
  
[List of Patents for class 369 subclass 30.43]    30.43Having specified picker:
 This subclass is indented under subclass 30.4.  Subject matter including specifics of a gripper assembly for selectively grasping user-selected disc cartridges and moving them within the storage system.
  
[List of Patents for class 369 subclass 30.44]    30.44Of carousel library system:
 This subclass is indented under subclass 30.43.  Subject matter wherein the gripper assembly is contained within a storage system which has a radial array of disc cartridges positioned so as to rotate about a central location or point.
  
[List of Patents for class 369 subclass 30.45]    30.45Picker support structure (i.e., mechanism for moving picker):
 This subclass is indented under subclass 30.4.  Subject matter including specifics of a mechanism which guides and translates a gripper assembly used to transport the disc cartridges within the storage system.
  
[List of Patents for class 369 subclass 30.46]    30.46Having specified disc drive:
 This subclass is indented under subclass 30.4.  Subject matter including specifics of a disc recording/reproducing unit used to mount the disc cartridges during playback or recording of information from the disc cartridge.
  
[List of Patents for class 369 subclass 30.47]    30.47Drive moves into alignment with disc:
 This subclass is indented under subclass 30.46.  Subject matter wherein the disc recording/reproducing unit has a mechanism to move the disc recording/reproducing unit into position across from a selected disc cartridge to be recorded/reproduced.
  
[List of Patents for class 369 subclass 30.48]    30.48Having particular mechanism or slot for transferring disc into library from outside:
 This subclass is indented under subclass 30.4.  Subject matter including specifics of the transferring structure used to move the disc cartridge from the exterior of the storage system to inside the storage system.
  
[List of Patents for class 369 subclass 30.49]    30.49Linear vertical or horizontal array:
 This subclass is indented under subclass 30.4.  Subject matter wherein the storage system has one or more storage racks which store the disc cartridges within the storage system wherein the storage racks must be oriented either horizontally or vertically in a linear fashion.
  
[List of Patents for class 369 subclass 30.5]    30.5Carousel array:
 This subclass is indented under subclass 30.4.  Subject matter wherein the storage system has one or more storage racks which store the disc cartridges in a radial array so that the storage racks rotate about a central location or point.
  
[List of Patents for class 369 subclass 30.51]    30.51Plural media are unprotected (i.e., discs that are not in cartridges):
 This subclass is indented under subclass 30.38.  Subject matter including specifics of the recording media wherein the recording media are devoid of any protective covering or casing (i.e., a naked disc).
  
[List of Patents for class 369 subclass 30.52]    30.52Having specified disc rack:
 This subclass is indented under subclass 30.51.  Subject matter including specifics of a disc storage array that stores and separates the discs inside the storage system.
  
[List of Patents for class 369 subclass 30.53]    30.53Having particular removable magazine:
 This subclass is indented under subclass 30.51.  Subject matter including specifics of a disc housing that holds multiple naked discs in a single contained unit wherein the disc housing must be easily inserted into and ejected from the storage system by a user.
  
[List of Patents for class 369 subclass 30.54]    30.54Mounting or locking magazine to library system:
 This subclass is indented under subclass 30.51.  Subject matter including specifics of how the removable disc housing is secured or maintained in a fixed position inside the storage system after insertion thereof into the storage system.
  
[List of Patents for class 369 subclass 30.55]    30.55Having specified picker:
 This subclass is indented under subclass 30.51.  Subject matter including specifics of a gripper assembly for selectively grasping user-selected naked discs and moving them within the storage system.
  
[List of Patents for class 369 subclass 30.56]    30.56Of carousel library system:
 This subclass is indented under subclass 30.55.  Subject matter wherein the gripper assembly is used within a storage system that has one or more storage racks which store the naked discs in a radial array of discs so that the storage racks rotate about a central location or point.
  
[List of Patents for class 369 subclass 30.57]    30.57Picker support structure detail (i.e., mechanism for moving picker):
 This subclass is indented under subclass 30.51.  Subject matter including specifics of a mechanism for permitting a gripper assembly to transport the naked discs within the storage system.
  
[List of Patents for class 369 subclass 30.58]    30.58Having specified disc drive:
 This subclass is indented under subclass 30.51.  Subject matter including specifics of a disc recording/reproducing unit used to mount the naked discs during playback or recording of information from the naked disc.
  
[List of Patents for class 369 subclass 30.59]    30.59Drive moves into alignment with disc:
 This subclass is indented under subclass 30.58.  Subject matter wherein the disc recording/reproducing unit has a mechanism to move the disc recording/reproducing unit into position across from a selected naked disc to be recorded/reproduced.
  
[List of Patents for class 369 subclass 30.6]    30.6Having particular mechanism or slot for transferring disc into library from outside:
 This subclass is indented under subclass 30.51.  Subject matter including specifics of a transferring structure used to move the naked discs from the exterior of the storage system to inside the storage system.
  
[List of Patents for class 369 subclass 30.61]    30.61Linear vertical or horizontal array:
 This subclass is indented under subclass 30.51.  Subject matter wherein the storage system has one or more storage racks which store the naked discs within the storage system wherein the storage racks must be oriented either horizontally or vertically in a linear fashion.
  
[List of Patents for class 369 subclass 30.62]    30.62Carousel array:
 This subclass is indented under subclass 30.51.  Subject matter wherein the storage system has one or more storage racks which store the naked discs in a radial array so that the storage racks rotate about a central location or point.
  
[List of Patents for class 369 subclass 30.63]    30.63Having particular cabinet:
 This subclass is indented under subclass 30.38.  Subject matter including specifics of an outer housing that contains the entire storage system therein.
  
[List of Patents for class 369 subclass 30.64]    30.64Plural optical storage media in disc changer:
 This subclass is indented under subclass 30.03.  Subject matter wherein multiple storage mediums are contained within a storage system for recording or reproducing purposes wherein storage medium drives contained therein are permanently contained within the storage system and are devoid of individual housings that protect each storage medium drive.
  
[List of Patents for class 369 subclass 30.65]    30.65Plural media are discs stored in cartridges:
 This subclass is indented under subclass 30.64.  Subject matter wherein the multiple storage mediums are each a plate-shaped planar recording medium contained within a protective casing or sleeve for covering the recording medium during use.
  
[List of Patents for class 369 subclass 30.66]    30.66Having specified stocker or internal magazine:
 This subclass is indented under subclass 30.65.  Subject matter including specifics of a disc cartridge housing that separates and stores the disc cartridges within the housing of the storage system.
  
[List of Patents for class 369 subclass 30.67]    30.67Stocker or internal magazine is adjustable or movable:
 This subclass is indented under subclass 30.65.  Subject matter including specifics of a disc cartridge storage rack that is movable within the storage system so as to move the entire storage rack of disc cartridges.
  
[List of Patents for class 369 subclass 30.68]    30.68Having particular removable magazine:
 This subclass is indented under subclass 30.65.  Subject matter including specifics of a disc cartridge housing that holds multiple disc cartridges in a single contained unit wherein the disc cartridge housing is easily inserted into and ejected from the storage system by a user.
  
[List of Patents for class 369 subclass 30.69]    30.69Mounting or locking magazine to disc changer:
 This subclass is indented under subclass 30.65.  Subject matter including details of how a disc cartridge container for holding a plurality of disc cartridges is secured within the storage system after insertion by the user from the outside.
  
[List of Patents for class 369 subclass 30.7]    30.7Having particular internal transfer mechanism for transferring disc while disc is inside of disc changer:
 This subclass is indented under subclass 30.65.  Subject matter including specifics of a transport assembly for selectively engaging user-selected disc cartridges and moving them within the storage system.
  
[List of Patents for class 369 subclass 30.71]    30.71Of carousel changer:
 This subclass is indented under subclass 30.7.  Subject matter wherein the transport assembly is contained within a storage system which has a radial array of disc cartridges positioned so as to rotate about a central location or point.
  
[List of Patents for class 369 subclass 30.72]    30.72Having particular internal support structure for internal transfer mechanism:
 This subclass is indented under subclass 30.65.  Subject matter including details of a structural support mechanism that enables movement of a transport mechanism that transfers selected disc cartridges within the storage system.
  
[List of Patents for class 369 subclass 30.73]    30.73Having specified drive:
 This subclass is indented under subclass 30.65.  Subject matter including specifics of a disc recording/reproducing unit used to mount the disc cartridges during playback or recording of information from the disc cartridge.
  
[List of Patents for class 369 subclass 30.74]    30.74Movable drive:
 This subclass is indented under subclass 30.73.  Subject matter wherein the disc recording/reproducing unit has a mechanism to move disc recording/reproducing unit into position across from a selected disc cartridge to be recorded/reproduced.
  
[List of Patents for class 369 subclass 30.75]    30.75Having particular mechanism or slot for transferring disc into changer from outside:
 This subclass is indented under subclass 30.65.  Subject matter including specifics of transferring structure used to move the disc cartridge from the exterior of the storage system to inside the storage system.
  
[List of Patents for class 369 subclass 30.76]    30.76Plural media are unprotected (i.e., discs that are not in cartridges):
 This subclass is indented under subclass 30.64.  Subject matter including specifics of the recording media wherein each of the recording media are devoid of any protective covering or casing (e.g., a naked disc).
  
[List of Patents for class 369 subclass 30.77]    30.77Having specified stocker or internal magazine:
 This subclass is indented under subclass 30.76.  Subject matter including specifics of a naked disc housing that separates and stores multiple naked discs within the housing of the storage system.
  
[List of Patents for class 369 subclass 30.78]    30.78Stocker or internal magazine is adjustable or movable:
 This subclass is indented under subclass 30.76.  Subject matter including specifics of a naked disc storage rack that is movable within the storage system so as to move the entire storage rack of naked discs.
  
[List of Patents for class 369 subclass 30.79]    30.79In carousel changer:
 This subclass is indented under subclass 30.78.  Subject matter wherein the storage rack is contained within a storage system which has a radial array of naked discs positioned so as to rotate about a central location or point.
  
[List of Patents for class 369 subclass 30.8]    30.8Positioning mechanism:
 This subclass is indented under subclass 30.79.  Subject matter including specifics of a mechanism for determining the orientation of the storage rack containing the radial array of naked discs so as to provide feedback on the particular location of the naked discs or the storage rack.
  
[List of Patents for class 369 subclass 30.81]    30.81Having disc reproduced while entirely in magazine:
 This subclass is indented under subclass 30.76.  Subject matter wherein the naked disc that is being played back must be maintained entirely with a naked disc housing that holds multiple naked discs in a single contained unit during the playback process.
  
[List of Patents for class 369 subclass 30.82]    30.82Having disc reproduced while partially in magazine:
 This subclass is indented under subclass 30.76.  Subject matter wherein the naked disc that is being played back is only fractionally removed from a naked disc housing that holds multiple naked discs in a single contained unit during the playback process.
  
[List of Patents for class 369 subclass 30.83]    30.83Having particular removable magazine:
 This subclass is indented under subclass 30.76.  Subject matter including specifics of a naked disc housing that holds multiple naked discs in a single contained unit wherein the naked disc housing is easily inserted into and ejected from the storage system by a user.
  
[List of Patents for class 369 subclass 30.84]    30.84Mounting or locking magazine to disc changer:
 This subclass is indented under subclass 30.76.  Subject matter including details of how a naked disc housing for holding a plurality of naked discs is secured within the storage system after insertion by the user from the outside.
  
[List of Patents for class 369 subclass 30.85]    30.85Having particular internal transfer mechanism for transferring disc while disc is inside of disc changer:
 This subclass is indented under subclass 30.76.  Subject matter including specifics of a transport assembly for selectively engaging user-selected naked discs and moving them within the storage system.
  
[List of Patents for class 369 subclass 30.86]    30.86Of a carousel changer:
 This subclass is indented under subclass 30.85.  Subject matter wherein the transport assembly is contained within a storage system which has a radial array of naked discs positioned so as to rotate about a central location or point.
  
[List of Patents for class 369 subclass 30.87]    30.87Having specified internal support structure for internal transfer mechanism:
 This subclass is indented under subclass 30.76.  Subject matter including details of a structural support mechanism that enables movement of a transport mechanism that transfers selected naked discs within the storage system.
  
[List of Patents for class 369 subclass 30.88]    30.88Having specified drive:
 This subclass is indented under subclass 30.76.  Subject matter including specifics of a naked disc recording/reproducing unit used to mount the naked discs during playback or recording of information from the disc cartridge.
  
[List of Patents for class 369 subclass 30.89]    30.89Movable drive:
 This subclass is indented under subclass 30.88.  Subject matter wherein the disc recording/reproducing unit has a mechanism to move the disc recording/reproducing unit into position across from a selected naked disc to be recorded/reproduced.
  
[List of Patents for class 369 subclass 30.9]    30.9Having particular mechanism or slot for transferring disc into changer from outside:
 This subclass is indented under subclass 30.76.  Subject matter including specifics of transferring structure used to move the naked disc from the exterior of the storage system to inside the storage system.
  
[List of Patents for class 369 subclass 30.91]    30.91Of carousel changer:
 This subclass is indented under subclass 30.9.  Subject matter wherein the transferring structure is contained within a storage system which has a radial array of naked discs positioned so as to rotate about a central location or point.
  
[List of Patents for class 369 subclass 30.92]    30.92Plural trays:
 This subclass is indented under subclass 30.9.  Subject matter wherein the transferring structure used to move the naked discs from the exterior of the storage system must have two or more separate tray structures for transferring the naked discs.
  
[List of Patents for class 369 subclass 30.93]    30.93One tray for multiple discs:
 This subclass is indented under subclass 30.9.  Subject matter wherein the transferring structure used to move the naked discs from the exterior of the storage system contains only a single unitary tray structure that holds more than one naked disc for transport thereof.
  
[List of Patents for class 369 subclass 30.94]    30.94Loading mechanism:
 This subclass is indented under subclass 30.93.  Subject matter including specifics of a system of parts used to move the single tray structure from the exterior of the storage system to inside the storage system.
  
[List of Patents for class 369 subclass 30.95]    30.95Chucking mechanism:
 This subclass is indented under subclass 30.93.  Subject matter including specifics of a system of parts used to clamp a selected naked disc onto a recording/reproducing unit for the purpose of recording to or playing back the selected naked disc.
  
[List of Patents for class 369 subclass 30.96]    30.96Locking mechanism:
 This subclass is indented under subclass 30.93.  Subject matter including specifics of a system of parts used to firmly hold, secure, or immobilize the single tray structure while inside the storage system.
  
[List of Patents for class 369 subclass 30.97]    30.97Positioning mechanism:
 This subclass is indented under subclass 30.93.  Subject matter including specifics of a system of parts used to spatially orient the single tray structure while inside the storage system so as to be able to determine the location of any one of the multiple naked discs.
  
[List of Patents for class 369 subclass 30.98]    30.98Having single motor that drives multiple mechanisms:
 This subclass is indented under subclass 30.93.  Subject matter including specifics of an individual motor and its corresponding system of parts used to actuate more than one unit within the storage system (e.g., a single motor for actuating both a disc tray transferring system and a disc clamping system).
  
[List of Patents for class 369 subclass 30.99]    30.99One tray for single disc:
 This subclass is indented under subclass 30.9.  Subject matter wherein the transferring structure used to move the naked discs from the exterior of the storage system contains only a single unitary tray structure that holds only one naked disc for transport thereof.
  
[List of Patents for class 369 subclass 31.01]    31.01Having particular cabinet:
 This subclass is indented under subclass 30.64.  Subject matter including specifics of an outer housing that contains the entire storage system therein.
  
[List of Patents for class 369 subclass 32.01]    32.01Specified electrical information signal processing:
 This subclass is indented under subclass 30.01.  Subject matter including detail of handling the information signal.

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99through 175, for information signal processing absent selective addressing.
  
[List of Patents for class 369 subclass 33.01]    33.01Specified electrical control signal processing:
 This subclass is indented under subclass 30.01.  Subject matter including detail of handling of an electrical signal which affects the operation of storage medium element or portion selection.
(1) Note. The electrical control signal is a signal other than a signal recorded on or reproduced from the storage medium.

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32.01,for selective addressing including processing of a signal recorded on or reproduced from the storage medium.

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340Communications: Electrical,   subclasses 4.37 and 4.4 for similar subject matter absent structure detail of signal storage.
  
[List of Patents for class 369 subclass 34.01]    34.01Plural storage medium elements:
 This subclass is indented under subclass 33.01.  Subject matter wherein the selection is of one of a plurality of separate storage medium elements.
  
[List of Patents for class 369 subclass 35.01]    35.01Plural nontranslating storage elements (e.g., in situ):
 This subclass is indented under subclass 30.01.  Subject matter having plural storage elements wherein the transducing assembly produces all storage element selecting motion.
(1) Note. The transducing assembly may have associated structure for driving the storage element in use.
(2) Note. The storage elements have no motion other than that used for storage or retrieval.

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39.01,for a scanning turntable which moves the storage element from its nonselected position in a plural disc carrier.
  
[List of Patents for class 369 subclass 36.01]    36.01Unitary plural record carrier:
 This subclass is indented under subclass 30.01.  Subject matter wherein an integrated mechanical array holds the discs in some way that they are readily accessible for selection.
(1) Note. The array holding the discs may be referred to as a magazine.

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192.1,for this subject matter absent storage medium designation and cross reference thereto should not be made in the absence of a nonselective embodiment.

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318Electricity: Motive Power Systems,   subclasses 567 through 579for electric motor positioning systems not limited to the subject of this class as an end element or load.
  
[List of Patents for class 369 subclass 37.01]    37.01Radial array:
 This subclass is indented under subclass 36.01.  Subject matter wherein the mechanical array holds the storage discs in a nonparallel pattern or spacing, which pattern may have characteristic lines with a common center.
(1) Note. Either the array or retrieval station may move for selective positioning.
(2) Note. The diameter of each disc in a common plane may be seen to radiate from the same center.
(3) Note. The array classified here may be merely a segment or a portion, or an entire circumference.
(4) Note. Arrays of small groups of discs, possibly parallel within each group but spaced radially group to group, are classified here.

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192.1,for this subject matter absent storage medium designation and cross reference thereto should not be made in the absence of a nonselective embodiment.
  
[List of Patents for class 369 subclass 38.01]    38.01Moving linear array:
 This subclass is indented under subclass 36.01.  Subject matter wherein the mechanical array holds the storage discs in parallel along a common axis and which array is movable along such axis for positioning a selected disc adjacent a retrieval station.

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37.01,for arrays of small groups of discs, parallel within each group but spaced radially group to group.
192.1,for this subject matter absent storage medium designation and cross reference thereto should not be made in the absence of a nonselective embodiment.
  
[List of Patents for class 369 subclass 39.01]    39.01Scanning turntable:
 This subclass is indented under subclass 36.01.  Subject matter wherein the storage medium motion producer moves along a stationary array for positioning relative to a selected disc.
(1) Note. The storage medium motion producer may be a turntable of such small diameter as to permit access to both sides of a disc.

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192.1,for this subject matter absent storage medium designation and cross reference thereto should not be made in the absence of a nonselective embodiment.
  
[List of Patents for class 369 subclass 40.01]    40.01By manually actuated mechanism for movement of tone arm:
 This subclass is indented under subclass 30.01.  Subject matter including a hand-actuated linkage coupled to a tone arm for setting to a selected position on a storage disc.
  
[List of Patents for class 369 subclass 41.01]    41.01Of track on single storage medium:
 This subclass is indented under subclass 30.01.  Subject matter wherein the designated portion of the storage medium is a distinct path of information modulated variation on the surface thereof.
  
[List of Patents for class 369 subclass 42.01]    42.01By mechanical linkage:
 This subclass is indented under subclass 24.01.  Subject matter including a device having a plurality of relatively moving parts for transmitting a controlling force or motion from another location to the storage or retrieval location.
(1) Note. Examples of such devices are Bowden cables or pneumatic actuators.
  
[List of Patents for class 369 subclass 43]    43WITH SERVO POSITIONING OF TRANSDUCER ASSEMBLY OVER TRACK COMBINED WITH INFORMATION SIGNAL PROCESSING:
 This subclass is indented under the class definition.  Subject matter having closed-loop control of the alignment between the transducer assembly and the information storage track combined with handling of the information signal.
(1) Note. The servo corrects alignment error and, if necessary, provides tracking motion for the transducer assembly.

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220,for transducer support control of powered support drive having storage or retrieval absent information signal handling.

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360Dynamic Magnetic Information Storage or Retrieval,   subclasses 77.01+ for track centering on a magnetic record carrier.
  
[List of Patents for class 369 subclass 44.11]    44.11Optical servo system:
 This subclass is indented under subclass 43.  Subject matter wherein the servo positioning is controlled by a radiant energy transducer.
(1) Note. The transducer may be either an information sensing transducer or an auxiliary transducer. Incidental recitation of focusing or tracking, or a servo system therefor, is not enough to permit classification here.

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44.27,for recording systems with initialization/startup/changing modes concepts.
44.32,for recording systems with defect/abnormal condition concepts.
44.38,for a recording system claimed in a plural beam system.
47and 51, for optical information storage or retrieval systems where a pilot signal is used.
93+,for optical systems using plural distinct independent tracks.
100+,for optical systems with specific detail of information handling portion of system.

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250Radiant Energy,   subclasses 201.1+ for optical tracking devices in radiant energy systems, per se.
  
[List of Patents for class 369 subclass 44.12]    44.12Solid state optical element with plural dissimilar optical components (e.g., using i.c. block, etc.):
 This subclass is indented under subclass 44.11.  Subject matter including a block of material of an integrated chip, semiconductor or solid state nature with plural dissimilar optical components or at least one optical component with an additional electrical component combined therein.
(1) Note. Examples are acoustic beam deflector and tracking circuit are on the same block of material, or a diode laser and acoustic lens in the same block of material.
(2) Note. Plural lasers or lasing points of the same frequency/wavelength on a common substrate are not classified herein since they have similar structure, but may be classified in this Class, subclass 44.37 or 44.38. However, if they are of different structure (i.e. different laser types) combined in a common structure they are classified herein.

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44.37,or 44.38, for servo systems using plural beams.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   subclasses 13 , 79 through 103 and 918 for incoherent light emitting injection luminescent devices, subclasses 80-85 for semiconductor light emitting sources combined with semiconductor light responsive devices, and subclasses 10, 11, 21, 53-56, 72, 113-118, 184 through 189, 225 through 234, 257, 258, 290 through 294, 414, and 431 through 466 for light responsive active semiconductor devices.
385Optical Waveguides,   subclass 14 for an integrated optical circuit and subclasses 129+ for a planar optical waveguide.
  
[List of Patents for class 369 subclass 44.13]    44.13Dithering or wobbling the beam or track:
 This subclass is indented under subclass 44.11.  Subject matter wherein a beam or track is dithered wobbled, undulated, vibrated, or oscillated along a track center line for tracking or focusing control.
  
[List of Patents for class 369 subclass 44.14]    44.14Optical head servo system structure:
 This subclass is indented under subclass 44.11.  Subject matter including structural detail of the mechanisms for focussing or tracking.
(1) Note. Optical head is defined as a device for producing a focused beam of light on a medium containing information and detecting the light reflected from the medium to determine the information content of the medium.

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359Optical: Systems and Elements,   subclasses 196.1 through 226.3and 819+ for optical heads in general, with or without servo system combination, when no recording/playback or combination with the recording medium is claimed.
  
[List of Patents for class 369 subclass 44.15]    44.15Elastic, flexible, pliant or spring support of lens or mirror:
 This subclass is indented under subclass 44.14.  Subject matter wherein an optical element is supported by some type of elastic, flexible, pliant, resilient or spring support for allowing or limiting motion in one or more various directions (e.g., elastic support holds lens or mirrors and permits focus motion but limits lateral motion, etc.).
(1) Note. A piezoelectric bender which supports the lens or mirror meets the definition and its flexible condition.
  
[List of Patents for class 369 subclass 44.16]    44.16Flat flexible support (e.g., parallel leaf springs, etc.):
 This subclass is indented under subclass 44.15.  Subject matter with planar means to limit or provide a limited direction of motion (e.g., support permits only one of focusing or tracking motion to occur, etc.).
  
[List of Patents for class 369 subclass 44.17]    44.17Optical head element with rotary motion:
 This subclass is indented under subclass 44.14.  Subject matter wherein an optical head element such as a lens or mirror pivots/rotates about its own axis or about a support axis in order to scan or focus on the track.
  
[List of Patents for class 369 subclass 44.18]    44.18Rotary headwheel or scanner (e.g., for use with arcuate, transverse or slant tracks, etc.):
 This subclass is indented under subclass 44.17.  Subject matter wherein an optical component rotales through a 360 degree motion to follow a track.
(1) Note. Slant tracts or tracks transverse to the storage medium motion are found on tape or card medium where the medium moves before or as the beam is directed across the medium.

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97,for systems using tracks transverse to a motion component.

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360Dynamic Magnetic Information Storage or Retrieval,   appropriate subclasses for magnetic rotary heads and headwheels and the combination with magnetic tape.
  
[List of Patents for class 369 subclass 44.19]    44.19Head element pivots on arm (e.g., optical head on disc arm etc.):
 This subclass is indented under subclass 44.17.  Subject matter including a support arm which rotates about a pivot point to drive the lens or mirror transverse to the track direction (e.g., optical lens or mirror is pivoted on a phonograph type arm which may provide both track accessing and tracking control, etc.).
  
[List of Patents for class 369 subclass 44.21]    44.21Lens or mirror pivots off center (e.g., on a shaft, etc.):
 This subclass is indented under subclass 44.17.  Subject matter wherein the support may or may not pivot about its own central axis, but the lens or mirror on this support is pivoted off center.
  
[List of Patents for class 369 subclass 44.22]    44.22Lens or mirror floats (e.g., magnetic field support or lens/mirror can freely float and pivot about its own axis, etc.):
 This subclass is indented under subclass 44.14.  Subject matter wherein the lens or mirror has no support and floats with potential freedom of motion in any direction, though a field such as a magnetic field which may limit and control its position and movement.
  
[List of Patents for class 369 subclass 44.23]    44.23Structure for shaping beam or causing astigmatic condition:
 This subclass is indented under subclass 44.14.  Subject matter having means to modify the cross-sectional profile or energy distribution of the beam or cause an astigmatic beam condition.
(1) Note. The phrase "shaping beam" is intended to include changing the intensity distribution characteristics or cross-sectional profile or size/diameter of the beam (e.g., for beam intensity control etc.) but not for routine focus control which inherently alters the beam size/diameter.
(2) Note. An "astigmatic" condition may be created by a cylindrical or unidirectional lens.
(3) Note. Astigmatic is defined as a spherical aberration.
  
[List of Patents for class 369 subclass 44.24]    44.24Means to mask or shield a portion of the beam:
 This subclass is indented under subclass 44.23.  Subject matter wherein a modification is performed by masking or shielding a cross-sectional portion of the beam.
(1) Note. The masking or shielding can be caused by one photodetector blocking a portion of the beam from falling onto another photodetector.

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44.42,where the servo system has arithmetic operations performed on plural detectors outputs and the servo system is responsive to a particular shape of the beam by virtue of the beam or detector being that shape.
  
[List of Patents for class 369 subclass 44.25]    44.25Servo signal compared to a reference signal:
 This subclass is indented under subclass 44.11.  Subject matter wherein a developed servo signal is compared to an external reference signal.

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44.27,if in an initialization/start-up or changing modes system.
44.34,if the reference signal is sampled and stored signal of an earlier servo signal.
  
[List of Patents for class 369 subclass 44.26]    44.26Servo system operation related to disc structure information format:
 This subclass is indented under subclass 44.11.  Subject matter wherein the operation of the servo system is in cooperation with an information arrangement, format, layout, pattern or track structure on the record medium.
(1) Note. The system can be, for example, a preformatted disc where tracking is turned on during preformatted regions and off during nonrecorded regions absent tracking data, or where servo operation is integral with or affected by a constant linear velocity disc format mode of operation, etc.
  
[List of Patents for class 369 subclass 44.27]    44.27Initialization/start-up or changing modes of system:
 This subclass is indented under subclass 44.11.  Subject matter wherein the servo system is affected by a change of mode in operation at the beginning of system operation or a change of mode during system operation.
(1) Note. "Random accessing" or indexing concepts may be classified herein if no specific "selective addressing" or feedback indication of arriving at a particular track address occurs.
(2) Note. The action taken by the servo system must be outside or beyond its normal routine ongoing continuous servo operation.
(3) Note. Varying the servo system control during a change between recording and playback or tracking modes due to the information format of the disc is classified above in subclass 44.26.
(4) Note. Examples of initialization/start-up are first track recording and track jumping or crossing during a random access type of operation.
(5) Note. Examples of mode change during operation are: switching between coarse/fine servo control as servo operation begins/changes modes, and the servo system responding to some user initiated operation.

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30.01through 41.01, for random accessing systems with selective addressing.
44.11,for generic recording systems without recitation of plural beams.
44.32,for recording systems with defect/abnormal condition concepts.
44.34,for sampling or digital techniques not associated with the criteria for subclass 44.27.
44.38,for a recording system claimed in a plural beam system.
  
[List of Patents for class 369 subclass 44.28]    44.28While track jumping or crossing:
 This subclass is indented under subclass 44.27.  Subject matter wherein the servo system is operative during a track jumping or track changing operation or as plural tracks are crossed.

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44.32,for the concept of "track crossing" when not normally associated with a deliberate action to jump across plural tracks such as during initial addressing or relocating to another track but where track crossing may be accidentally introduced by some abnormal condition as found in subclasses 44.32+ below.
  
[List of Patents for class 369 subclass 44.29]    44.29Servo loop gain/switching control:
 This subclass is indented under subclass 44.27.  Subject matter wherein the servo system continuously varies the servo gain or discretely switches in/out between servo loops.
(1) Note. Varying the gain may be some control operation not only to change the gain but to have the ability to vary it to keep it stable and prevent undesired varying, and varying the gain may be implemented with either active or passive (e.g., notch filter, etc.) elements.
(2) Note. Gain is defined as the ratio of output power to input power for a system or component.

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44.35,servo loop gain/switching control not associated with criteria for subclass 44.27.
  
[List of Patents for class 369 subclass 44.31]    44.31Recording:
 This subclass is indented under subclass 44.29.  Subject matter wherein an optical system is capable of a writing/recording operation.
(1) Note. An example is recording of a first track on a disc which is then used for tracking control for further tracks being recorded.

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44.33,for recording systems with a defect/abnormal condition.
44.38,for a recording system claimed in a plural beam system.
44.39,for generic recording systems without recitation of plural beams.
  
[List of Patents for class 369 subclass 44.32]    44.32Means to compensate for defect or abnormal condition:
 This subclass is indented under subclass 44.11.  Subject matter wherein the servo system structure or operation has means to avoid the servo system being affected by, or so that it is responsive to and corrects for an adverse situation.
(1) Note. Examples of conditions being corrected are disc defects, tilt, vibrations, shocks, impacts, skew to normal direction to the disc surface, vertical warp, jitter, eccentricity, beam variations or some condition outside of the ordinary servo operation condition, etc.

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44.11,for generic recording systems.
44.27,for recording systems with initialization/start-up/changing modes concepts.
44.38,for a recording system claimed in a plural beam system.
  
[List of Patents for class 369 subclass 44.33]    44.33Recording (e.g., inhibit recording upon defect, etc.):
 This subclass is indented under subclass 44.32.  Subject matter comprising a writing/recording system in combination with compensation means.

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44.31,for recording systems including initialization/start-up.
44.38,for a recording system claimed in a plural beam system.
44.39,for generic recording systems without recitation of plural beams.
  
[List of Patents for class 369 subclass 44.34]    44.34Sampling servo system:
 This subclass is indented under subclass 44.11.  Subject matter wherein an instantaneous value of a variable is obtained at regular intervals (e.g., sample and hold, be it analog or digital storage, etc.).
  
[List of Patents for class 369 subclass 44.35]    44.35Servo loop gain/switching control:
 This subclass is indented under subclass 44.11.  Subject matter wherein the servo system varies the servo gain or switches in/out or between servo loops.
(1) Note. Varying the gain also includes techniques for stabilization.
(2) Note. Varying the gain may be implemented with either active or passive (e.g., notch filter etc.) elements.
(3) Note. Gain is defined as the ratio of output power to input power of a system or component.
  
[List of Patents for class 369 subclass 44.36]    44.36Variable gain:
 This subclass is indented under subclass 44.35.  Subject matter wherein the servo gain is variable in a continuous manner as opposed to being switched between values, but may be combined with switching operations.
  
[List of Patents for class 369 subclass 44.37]    44.37Plural incident beams:
 This subclass is indented under subclass 44.11.  Subject matter wherein plural beams incident upon the recording medium are used, which may be one or more focusing, tracking, playback or recording beams.
(1) Note. Plurals beams created by splitting a single beam from the recording medium (e.g., etc., reflected beam is split and directed to plural detectors) is not classified here.
  
[List of Patents for class 369 subclass 44.38]    44.38Recording:
 This subclass is indented under subclass 44.37.  Subject matter wherein one of the beams is for writing/recording operations.

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44.31,for recording systems with initialization/start-up/changing modes concepts.
44.33,for recording systems with defect/abnormal condition concepts.
44.39,for generic recording systems without recitation of plural beams.
  
[List of Patents for class 369 subclass 44.39]    44.39Recording:
 This subclass is indented under subclass 44.11.  Subject matter comprising an optical system capable of a writing/recording operation.

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44.31,for recording systems with initialization/start-up.
44.33,for recording systems with defect/abnormal condition.
44.38,for a recording system claimed in a plural beam system.
  
[List of Patents for class 369 subclass 44.41]    44.41Arithmetic operation using plural photo-detectors:
 This subclass is indented under subclass 44.11.  Subject matter where more than one of addition, subtraction, multiplication, division is performed upon an output signals of plural photodetectors for the purpose of deriving one or more servo signals.
  
[List of Patents for class 369 subclass 44.42]    44.42Beam or detector is not rectangular or circular:
 This subclass is indented under subclass 44.41.  Subject matter wherein either the beam or the detector has a shape other than rectangular or circular.
  
[List of Patents for class 369 subclass 47.1]    47.1CONTROL OF STORAGE OR RETRIEVAL OPERATION BY A CONTROL SIGNAL TO BE RECORDED OR REPRODUCED:
 This subclass is indented under the class definition.  Subject matter wherein a control signal to be stored or retrieved acts upon a dynamic information storage and retrieval apparatus for modifying, adjusting, or maintaining an operating condition of the apparatus.
(1) Note. The control signal may be either an information signal or a distinct signal used for control purpose only.

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19through 23, for control by timer or external extraneous condition.
24.01through 42.01, for control of a storage or retrieval apparatus by location of an information on a storage medium or by an operator-actuated remote control.
43through 44.42, for servo system combined with information signal processing.

SEE OR SEARCH CLASS:

360Dynamic Magnetic Information Storage or Retrieval,   appropriate subclasses for similar subject matter limited to magnetic storage or retrieval, particularly subclass 27 for recording or reproducing an information signal and a control signal for controlling electronics of reproducer, subclasses 55-68 for general recording or reproducing, subclasses 69-78.15 for automatic control of a recorder mechanism, subclasses 79-80 for recorder control of an external device.
386Motion Video Signal Processing for Recording or Reproducing,   appropriate subclasses for recording and reproduction of television or video signal.
700Data Processing: Generic Control Systems or Specific Applications,   appropriate subclasses for digital data processing control systems, particularly subclass 94 for digital audio data processing system.
711Electrical Computers and Digital Processing Systems: Memory,   subclass 4 for addressing dynamic storage devices including address formation or manipulation, and subclasses 111-114 for data accessing and control techniques for dynamic storage device in a digital data processing system.
  
[List of Patents for class 369 subclass 47.11]    47.11Control of initiation of pause mode:
 This subclass is indented under subclass 47.1.  Subject matter wherein the control signal acts upon the apparatus to terminate a storage or retrieval operation and to place the apparatus in a temporarily inactive condition.

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24.01through 42.01, for control of a storage or retrieval apparatus by location of an information on a storage medium or by an operator-actuated remote control.
  
[List of Patents for class 369 subclass 47.12]    47.12For copying:
 This subclass is indented under subclass 47.1.  Subject matter wherein the control signal acts upon the apparatus to retrieve information from one storage medium to subsequently store the information on another distinct storage medium.
(1) Note. Copying without a control signal is excluded from this subclass.

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53.21,for indication of copying or editing protection.
84,for copying or duplication without a control signal.

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360Dynamic Magnetic Information Storage or Retrieval,   subclass 15 for record copying, subclass 60 for recording or erasing prevention.
386Motion Video Signal Processing for Recording or Reproducing,   subclasses 252 through 260for video copy identification protection, and subclass 279 for video copying or dubbing.
  
[List of Patents for class 369 subclass 47.13]    47.13For editing:
 This subclass is indented under subclass 47.1.  Subject matter wherein the control signal acts upon the apparatus to delete, add, or rearrange portions of a stored information signal.
(1) Note. Editing without a control signal is excluded from this subclass.

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53.21,for indication of copying or editing protection.
83,for editing of stored information without a control signal.

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360Dynamic Magnetic Information Storage or Retrieval,   subclass 13 for record editing, subclass 60 for recording or erasing prevention.
386Motion Video Signal Processing for Recording or Reproducing,   subclasses 278 through 290for video editing in a recording and reproduction device.
  
[List of Patents for class 369 subclass 47.14]    47.14By medium defect indicative control signal:
 This subclass is indented under subclass 47.1.  Subject matter wherein the dynamic information storage and retrieval apparatus is acted upon by a control signal that indicates a presence of an unrecordable region due to abnormality within a recordable region of a record medium.

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53.17,for defect location indication.
53.24,for indication of an unrecorded location within a recordable region without a control signal.
53.35,for signal error correction or detecting.

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714Error Detection/Correction and Fault Detection /Recovery,   subclass 769 for digital error correction in a dynamic data storage.
  
[List of Patents for class 369 subclass 47.15]    47.15Control of information signal processing channel:
 This subclass is indented under subclass 47.1.  Subject matter wherein an information signal processing circuitry is affected by the control signal for determining a parameter of an information signal.

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53.31,for monitoring or testing of a stored or a retrieved information signal in a dynamic radiation information storage or retrieval system.
53.34,for monitoring or testing of a time related parameter, such as example, duty cycle, jitter, sync, etc., of an information signal.
53.44,for monitoring or testing of a stored or a retrieved information signal in a dynamic information storage or retrieval system.
59.1through 59.27, for dynamic storage or retrieval of a binary pulse train information signal.
124.01through 124.15, for specific information signal processing without a control signal.
174,for specific detail of information handling portion of system, including detail of signal modification.
  
[List of Patents for class 369 subclass 47.16]    47.16Of plural interrelated channels:
 This subclass is indented under subclass 47.15.  Subject matter wherein the information signal processing circuitry includes distinct paths for several signal components of the information signal and determined parameters of such components have a definite relationship to each other.
  
[List of Patents for class 369 subclass 47.17]    47.17For removal of unwanted signal component:
 This subclass is indented under subclass 47.15.  Subject matter wherein the information signal processing circuitry is affected by the control signal for removing a signal component that does not represent information from the information signal.
(1) Note. Such signal component includes, for example, distortion, noise, crosstalk, or intersymbol interference signal component.

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53.33,for a dynamic information storage or retrieval system having unwanted signal component indication.

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386Motion Video Signal Processing for Recording or Reproducing,   subclasses 263 through 277for error or fault detection and/or correction during video recording or reproduction.
714Error Detection/Correction and Fault Detection /Recovery,   appropriate subclasses.
  
[List of Patents for class 369 subclass 47.18]    47.18For interpolating or drop-out correcting:
 This subclass is indented under subclass 47.15.  Subject matter wherein the information signal processing circuitry is affected by the control signal for generating additional or missing signal component and inserting such signal component into the information signal.

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53.32,for drop-out indication of an information signal in a dynamic radiation information storage or retrieval system.

SEE OR SEARCH CLASS:

386Motion Video Signal Processing for Recording or Reproducing,   subclasses 270 through 272for video drop-out detection and correction during video recording or reproduction.
  
[List of Patents for class 369 subclass 47.19]    47.19For modulating or demodulating:
 This subclass is indented under subclass 47.15.  Subject matter wherein the information signal processing circuitry is affected by the control signal for a) converting an input signal into a recording signal by varying amplitude, frequency, or phase thereof using a carrier signal or b) extracting an input information signal from retrieved modulated signal.

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124.04,for modulating or demodulating without a control signal.

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329Demodulators,   appropriate subclasses for demodulators per se.
332Modulators,   appropriate subclasses for modulators per se.
340Communications: Electrical,   subclasses 13.1 through 13.36for a phase and frequency responsive selective system and subclasses 870.18-870.24 for a frequency or phase modulated telemetry system.
348Television,   subclass 724 for a modulator of a television transmitter circuitry.
360Dynamic Magnetic Information Storage or Retrieval,   subclasses 29 through 30for modulating and demodulating circuitry or techniques.
370Multiplex Communications,   subclasses 212 , 213 and 215 for pulse duration, pulse position, and phase modulation, respectively.
375Pulse or Digital Communications,   appropriate subclasses for pulse, amplitude or angle modulation in a receiver or transmitter of a digital communication system.
386Motion Video Signal Processing for Recording or Reproducing,   subclasses 307 through 312for frequency or phase modulation of color video signal during video recording or reproduction.
  
[List of Patents for class 369 subclass 47.2]    47.2For multiplexing or demultiplexing:
 This subclass is indented under subclass 47.15.  Subject matter wherein the information signal processing circuitry is affected by the control signal for a) combining plural input signals into a recording signal such that at any instance of time one signal is presented at an output channel for recording or b) separating a retrieved multiplexed signal into plural output signals for reproducing.

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59.27,for binary signal multiplexing or demultiplexing.
124.09,for multiplexing or demultiplexing without a control signal.

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370Multiplex Communications,   subclasses 437+ for channel assignment techniques.
  
[List of Patents for class 369 subclass 47.21]    47.21Of sub-code information:
 This subclass is indented under subclass 47.2.  Subject matter wherein a supplemental information signal associated with a main information signal is multiplexed or demultiplexed.

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124.07,for auxiliary information arrangement processing without a control signal.
  
[List of Patents for class 369 subclass 47.22]    47.22Having location identification information:
 This subclass is indented under subclass 47.21.  Subject matter wherein the supplemental information signal includes header or address information for identifying specific location on a record medium.

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47.27,for control of the amplitude of an information signal using information retrieved from a designated medium location such as preformat, header, or reference region.
47.31,for phase, time or rate processing using a program or address signal.
47.47,for control of relative motion producing mechanism using a program or address signal.
47.54,for control of transducer assembly mechanism using a program or address signal.
53.17,for indication of a defect location on the record medium.
59.25,for format arrangement processing for an auxiliary information such as subcode information, headers of a binary pulse train information signal.
  
[List of Patents for class 369 subclass 47.23]    47.23For sequencing or switching:
 This subclass is indented under subclass 47.15.  Subject matter wherein the information signal processing circuitry is affected by the control signal for a) producing a specific order of occurrence of portions of the information signal or b) selectively passing or routing of the information signal.

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360Dynamic Magnetic Information Storage or Retrieval,   subclass 22 for splitting an information signal for reproducing or for recording on plural distinct tracks.
386Motion Video Signal Processing for Recording or Reproducing,   subclass 333 for still mode recording, and subclass 341 for simultaneous recording of plural video signals.
  
[List of Patents for class 369 subclass 47.24]    47.24Between alternative processing channels:
 This subclass is indented under subclass 47.23.  Subject matter including means for selecting one among a plurality of alternative processing operations to be performed on the information signal.

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59.13,for dynamic recording or reproducing of a binary pulse train information signal including a selection of one among a plurality of processing operations.

SEE OR SEARCH CLASS:

386Motion Video Signal Processing for Recording or Reproducing,   subclass 225 for a motion camera recording device having a still mode function.
  
[List of Patents for class 369 subclass 47.25]    47.25For gain processing:
 This subclass is indented under subclass 47.15.  Subject matter wherein the information signal processing circuitry is affected by the control signal for varying an amplitude of the information signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

59.15,for binary signal gain processing.
124.1through 124.13, for gain processing without a control signal.
134,for particular amplification characteristic or signal control circuitry.

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330Amplifiers,   for amplifiers per se.
360Dynamic Magnetic Information Storage or Retrieval,   subclass 46 for a head amplifier circuit, subclass 67 for specifics of an amplifier and subclass 68 for a recording amplifier.
386Motion Video Signal Processing for Recording or Reproducing,   subclasses 304 through 305for amplitude level control of a color video signal, and subclass 311 for amplitude modulation of luminance or chrominance of a color video signal during video recording or reproduction.
  
[List of Patents for class 369 subclass 47.26]    47.26Within a frequency band:
 This subclass is indented under subclass 47.25.  Subject matter wherein the gain processing is within a specified frequency range.

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124.13,for a specific frequency range gain processing without a control signal.
  
[List of Patents for class 369 subclass 47.27]    47.27Using a reproduced information of specified preformat, header, or reference area:
 This subclass is indented under subclass 47.25.  Subject matter wherein the amplitude of the information signal is controlled using a readout signal from a designated medium location such as preformat, header, or reference region.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47.22,for control of information signal processing channel for multiplexing or demultiplexing of information signal including location identification information.
47.31,for phase, time or rate processing using a program or address signal.
47.47,for control of relative motion producing mechanism using a program or address signal.
47.54,for control of transducer assembly mechanism using a program.
59.25,for format arrangement processing for an auxiliary information, such as block header or subcode information, of a binary pulse train information signal.
  
[List of Patents for class 369 subclass 47.28]    47.28For phase, timing, or rate processing:
 This subclass is indented under subclass 47.15.  Subject matter wherein the information signal processing circuit is affected by the control signal for adjusting a time related parameter of the information signal such as phase, timing or rate.

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53.34,for monitoring or testing of a time related parameter of the information signal.
59.2,for phase processing of a binary signal.
124.14,for phase processing without a control signal.

SEE OR SEARCH CLASS:

386Motion Video Signal Processing for Recording or Reproducing,   subclass 207 for synchronization correction, subclass 221 for controlling speed of tape, subclass 222 for controlling speed of disk during video recording or reproduction, and subclass 274 for phase-crosstalk detection and/or correction.
  
[List of Patents for class 369 subclass 47.29]    47.29During retrieval at a dynamic retrieval rate different from storage rate:
 This subclass is indented under subclass 47.28.  Subject matter wherein the time related parameter is adjusted during retrieval at a relative head-to-medium reproducing speed that is faster or slower than a relative head-to-medium recording speed.
(1) Note. Included herein is CAV vs CLV dynamic recording or reproducing apparatus.

SEE OR SEARCH CLASS:

386Motion Video Signal Processing for Recording or Reproducing,   subclasses 343 through 352for trick play processing in a video recording and reproduction device.
  
[List of Patents for class 369 subclass 47.3]    47.3While changing of system mode or dynamic retrieval rate:
 This subclass is indented under subclass 47.28.  Subject matter wherein the time related parameter is adjusted during a change in an operating mode of the apparatus or during a change in a relative head-to-medium reproducing speed.

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386Motion Video Signal Processing for Recording or Reproducing,   subclasses 201 through 222for synchronization or timing detection and/or correction in a recording and reproduction device.
  
[List of Patents for class 369 subclass 47.31]    47.31Using program or address signal:
 This subclass is indented under subclass 47.28.  Subject matter wherein the time relate parameter is adjusted using a signal indicative of a type or a specific location of stored information.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47.22,for control of information signal processing channel for multiplexing or demultiplexing of an information signal including location identification information.
47.27,for control of an amplitude of the information signal using read out signal from a designated medium location such as preformat, header, or reference region.
47.47,for control of a relative motion producing mechanism using a program or address signal.
47.54,for control of a transducer assembly mechanism using a program or address signal.
59.25,for format arrangement processing for an auxiliary information of a binary pulse train information signal.
  
[List of Patents for class 369 subclass 47.32]    47.32Including static memory accessing:
 This subclass is indented under subclass 47.28.  Subject matter comprising a static memory access control operation for writing or reading the information signal.

SEE OR SEARCH CLASS:

345Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems,   subclass 507 for memory organization and structure for storing images to be displayed, and subclass 521 for interfacing between a graphics processor and a memory.
353Optics: Image Projectors,   subclass 25 for selective data retrieval of stored information viewed by a projection means.
365Static Information Storage and Retrieval,   appropriate subclasses for a type of static memory, particularly subclasses 189.011 through 225.7for read or write circuitry.
386Motion Video Signal Processing for Recording or Reproducing,   subclass 247 for utilizing a static memory as an auxiliary memory.
711Electrical Computers and Digital Processing Systems: Memory,   subclass 4 for addressing a dynamic storage device including address formation or manipulation, subclasses 111-114 for accessing a dynamic storage device of a digital data processing system.
  
[List of Patents for class 369 subclass 47.33]    47.33Including static memory fill level monitoring or controlling:
 This subclass is indented under subclass 47.32.  Subject matter wherein the access control operation includes a) means for monitoring an amount of stored information in a static memory to control writing or reading of the information signal, or b) means for maintaining a stored or vacant static memory space at a predetermined value.

SEE OR SEARCH CLASS:

386Motion Video Signal Processing for Recording or Reproducing,   subclass 295 for memory space management during recording or reproduction operations.
707Data Processing: Database, Data Mining, and File Management or Data Structures,   subclasses 609 through 686for file or database maintenance; subclasses 813 through 820 for garbage collection; and, subclasses 821 through 831 for file management.
711Electrical Computers and Digital Processing Systems: Memory,   subclasses 170 through 173for memory configuration.
  
[List of Patents for class 369 subclass 47.34]    47.34Including static memory write address controlling:
 This subclass is indented under subclass 47.32.  Subject matter wherein the access control operation includes means for controlling addressing of the static memory such that written information are positioned in the static memory according to a predetermined relationship.

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30.01through 41.01, for subject matter related to designation or selection of storage medium to be used for storage and retrieval.
178.01,for dynamic mechanism subsystems for accessing multiple storage elements.

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365Static Information Storage and Retrieval,   subclasses 189.01 through 225.7for read or write circuitry.
707Data Processing: Database, Data Mining, and File Management or Data Structures,   subclasses 609 through 686for file or database maintenance; subclasses 813 through 820 for garbage collection; and, subclasses 821 through 831 for file management
710Electrical Computers and Digital Data Processing Systems: Input/Output,   subclasses 22 through 28for Direct Memory Access (DMA).
711Electrical Computers and Digital processing Systems: Memory,   subclass 4 for addressing dynamic storage devices including address formation or manipulation and subclasses 111- 114 for data accessing and control techniques for dynamic storage device in a digital data processing system.
  
[List of Patents for class 369 subclass 47.35]    47.35For sampling, digital to analog or analog to digital converting:
 This subclass is indented under subclass 47.15.  Subject matter wherein the information signal processing circuit is affected by the control signal for a) obtaining instantaneous values of an information signal or b) transforming a succession of discrete digital values of an information signal into an analog signal of corresponding amplitude values or transforming a continuous information signal into discrete digital values.

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124.05,for sampling without a control signal.
59.21,for sampling or analog to digital converting of a binary information signal.

SEE OR SEARCH CLASS:

341Coded Data Generation or Conversion,   subclasses 122+ for sample or hold, subclasses 126-172 for analog to or from digital conversion.
386Motion Video Signal Processing for Recording or Reproducing,   subclass 327 for using an A/D or D/A converter for video processing during recording operation.
  
[List of Patents for class 369 subclass 47.36]    47.36Mechanism control by the control signal:
 This subclass is indented under subclass 47.1.  Subject matter wherein a mechanical operating condition is controlled by the control signal.

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19through 23, for control by timer or external extraneous condition.
24.01through 42.01, for control of a storage or retrieval apparatus by physical location of an information on a storage medium or by an operator-actuated remote control.
70,for control of a diverse art device.
176through 271, for dynamic mechanism subsystem, particularly subclasses 231-233 for mechanism responsive to a control structure on a storage medium sensed by transducer assembly support, and subclasses 233-243 for mechanism condition or storage medium responsive control.

SEE OR SEARCH CLASS:

226Advancing Material of Indeterminate Length,   subclass 9 for control means responsive to indicia carried by auxiliary record (e.g., tape or card), and subclasses 10-45 for material responsive control means.
242Winding, Tensioning, or Guiding,   subclasses 324 through 358.1for means for unwinding and rewinding a machine convertible information carrier; e.g., a magnetic tape, particularly subclasses 333-333.7 for automated stop or reversal control for the carrier, and subclasses 334-334.6 for a carrier speed or tension control.
318Electricity: Motive Power Systems,   appropriate subclasses, particularly subclasses 560 through 688for positional servo systems.
360Dynamic Magnetic Information Storage or Retrieval,   subclasses 69 through 78.15for automatic control of a recorder mechanism, and subclasses 79-80 for recorder control of an external device such as slide or movie projectors.
  
[List of Patents for class 369 subclass 47.37]    47.37Control of spiral track spacing (e.g., signal variable pitch):
 This subclass is indented under subclass 47.36.  Subject matter wherein the mechanical operating condition is controlled to adjust a displacement between adjacent tracks during storage of an information signal.
(1) Note. Such adjustment is often necessary for high values of signal amplitude when recording lateral groove.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47.38through 47.48, for controlling of relative motion producing mechanism.
47.49through 47.54, for controlling of transducer assembly mechanism.

SEE OR SEARCH CLASS:

360Dynamic Magnetic Information Storage or Retrieval,   subclasses 71 through 74.7for controlling the record.
  
[List of Patents for class 369 subclass 47.38]    47.38Control of relative motion producing mechanism:
 This subclass is indented under subclass 47.36.  Subject matter wherein relative motion between a transducer assembly and a record medium is controlled.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47.37,for controlling of spiral track spacing.
47.49through 47.54, for controlling of transducer assembly mechanism.
53.3,for indicating, monitoring, or testing of a relative motion producing mechanism of a dynamic radiation storage or retrieval system.
53.43,for indicating, monitoring, or testing of a relative motion producing mechanism of a dynamic storage or retrieval system.

SEE OR SEARCH CLASS:

360Dynamic Magnetic Information Storage or Retrieval,   subclasses 71 through 74.7for controlling the record, and subclasses 75-78.15 for controlling the head.
  
[List of Patents for class 369 subclass 47.39]    47.39During initialization or start-up:
 This subclass is indented under subclass 47.38.  Subject matter wherein the relative motion is controlled while starting system operation.

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44.27,for optical servo positioning system affected by a start-up mode or a change of mode during system operation.
47.55,for mechanism control during a start-up mode or a change of mode during system operation.
53.37,for condition indicating, monitoring or testing of a dynamic radiation storage or retrieval system during a start-up mode or a change of mode during system operation.
53.45,for condition indicating, monitoring or testing of a dynamic storage or retrieval system during a start-up mode or a change of mode during system operation.