Pulse or digital communications – Bandwidth reduction or expansion
Reexamination Certificate
2006-08-29
2006-08-29
An, Shawn S. (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
C375S240230, C375S240250, C375S240240, C382S246000, C382S245000, C382S247000, C382S233000, C382S235000
Reexamination Certificate
active
07099387
ABSTRACT:
Transform coefficients of sample blocks of a macroblock of a video picture are encoded by adaptively encoding in 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 non-zero coefficients, the total number of zero coefficients interposed in the non-zero coefficients, and the respective run lengths of the 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 measures may be performed in view of quantization parameters of a macroblock and previously encoded level measures. Decoding may be performed in an inverse manner.
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Bjontegaard Gisle
Lilleyold Karl O.
An Shawn S.
RealNetorks, Inc.
RealNetworks, Inc.
Stewart Steven C.
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