Adaptive control of codebook regeneration in data...

Details Adaptive control of codebook regeneration in data... Adaptive control of codebook regeneration in data...

2006-12-26

2006-12-26

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

Adaptive coding

C711S212000, C711S220000

Reexamination Certificate

active

07154416

ABSTRACT:
Adaptive control of codebook regeneration in data compression mechanisms. In one implementation, the present invention provides a means controlling the frequency of codebook updates based on expected performance gains resulting from codebook regeneration. The present invention, in one implementation, employs a mechanism that simulates the expected compression performance of a hypothetically, updated codebook. A compression module compares the simulated compression performance to the actual performance of the codebook used to compress the data, and updates the codebook if a threshold condition is satisfied.

REFERENCES:
patent: 5255090 (1993-10-01), Israelsen
patent: 5530645 (1996-06-01), Chu
patent: 5889891 (1999-03-01), Gersho et al.
patent: 6430672 (2002-08-01), Dhong et al.
patent: 6489902 (2002-12-01), Heath
patent: 6526574 (2003-02-01), Jones
patent: 6529912 (2003-03-01), Satoh et al.

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