Context-adaptive VLC video transform coefficients...

Details Context-adaptive VLC video transform coefficients... Context-adaptive VLC video transform coefficients...

2011-04-05

2011-04-05

An, Shawn (Department: 2483)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240230, C375S240240, C375S240250, C375S240260, C382S233000, C382S235000, C382S246000, C382S245000, C341S067000, C341S065000, C341S059000, C341S056000

Reexamination Certificate

active

07920629

ABSTRACT:
Transform coefficients of sample blocks of a macroblock of a video picture are encoded by adaptively encoding a combination, the number of non-zero coefficients before the trailing one coefficients and the number of trailing one coefficients. The transform coefficients may be further encoded by adaptively encoding one or more of the signs of the trailing one coefficients, the level measures of the interposed in the non-zero coefficients. Adaptive encoding of the number and trailing one coefficients may be performed in view of one or more neighboring sample blocks, whereas adaptive encoding of level measure may be performed in view of quantization parameters of a macroblock and previously encoded level measures. Decoding may be performed in an inverse manner.

REFERENCES:
patent: 5510785 (1996-04-01), Segawa et al.
patent: 6696993 (2004-02-01), Karczewicz
patent: 7099387 (2006-08-01), Bjontegaard et al.

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