| US 7,580,339 B2 | ||
| Information recording medium, recording apparatus, reproduction apparatus, recording method, and reproduction method | ||
| Mamoru Shoji, Osaka (Japan); Takashi Ishida, Kyoto (Japan); Motoshi Ito, Osaka (Japan); Hiroshi Ueda, Nara (Japan); Yoshikazu Yamamoto, Osaka (Japan); and Atsushi Nakamura, Osaka (Japan) | ||
| Assigned to Panasonic Corporation, Kadoma (Japan) | ||
| Filed on May 22, 2008, as Appl. No. 12/125,429. | ||
| Application 12/125429 is a continuation of application No. 11/456780, filed on Jul. 11, 2006, granted, now 7,423,951. | ||
| Application 11/456780 is a continuation of application No. 10/348027, filed on Jan. 20, 2003, granted, now 7,170,841, filed on Jan. 30, 2007. | ||
| Claims priority of application No. 2002-013493 (JP), filed on Jan. 22, 2002; application No. 2002-056479 (JP), filed on Mar. 01, 2002; and application No. 2002-320444 (JP), filed on Nov. 01, 2002. | ||
| Prior Publication US 2008/0225667 A1, Sep. 18, 2008 | ||
| Int. Cl. G11B 7/24 (2006.01) | ||
| U.S. Cl. 369—275.3 [369/59.25] | 5 Claims |
| 1. An information recording medium including a recording layer, the recording layer comprising:
a data area for storing user data; and
a disc information area in which disc information is stored,
wherein the disc information area is provided in at least one of an inner area located at an inner radial position than a
radial position of the data area and an outer area located at an outer radial position than a radial position of the data
area of the recording layer,
a dummy data is recorded in a remaining area of the disc information area, and
a length of an area for storing the dummy data is an integer multiple of a length of an area for storing the disc information.
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