| US 7,463,781 B2 | ||
| Low overhead context intializations for arithmetic video codecs | ||
| Eric C. Pearson, Conestogo (Canada); and Harminder S. Banwait, Waterloo (Canada) | ||
| Assigned to LSI Corporation, Milpitas, Calif. (US) | ||
| Filed on Apr. 14, 2004, as Appl. No. 10/824,152. | ||
| Prior Publication US 2005/0232505 A1, Oct. 20, 2005 | ||
| Int. Cl. G06K 9/36 (2006.01); G06K 9/46 (2006.01); H04N 7/12 (2006.01); H04N 11/02 (2006.01); H04B 1/66 (2006.01) | ||
| U.S. Cl. 382—247 [375/240; 348/384.1] | 20 Claims |
| 1. A method for controlling an arithmetic codec context, comprising the steps of:
(A) reading a current value indicating one of a first condition and a second condition corresponding to a current context
of a plurality of predetermined contexts;
(B) generating an input state matching (i) an initial state in response to said first condition and (ii) an output state in
response to said second condition, wherein said initial state has a predetermined value and said output state has a value
generated in a prior cycle completed before receiving said current context in a current cycle; and
(C) generating a current output state by performing an arithmetic code operation on an input signal using said input state.
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