Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2011-07-05
2011-07-05
Kelley, Christopher S (Department: 2482)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240230, C348S050000, C348S051000, C348S065000, C348S067000
Reexamination Certificate
active
07974343
ABSTRACT:
The present invention provides an entropy coding method for coding video prediction residual coefficients, comprising the steps of: firstly, zig-zag scanning coefficients of blocks to be coded to form a sequence of (level, run) pairs; secondly, selecting a type of code table for coding a current image block to be coded according to a type of macro block; then switching and coding each (level, run) pair in the obtained sequence of (level, run) pairs with multiple tables, with the reverse zig-zag scanning order for the coding order of the pairs; at last, coding a flag of End of Block EOB with the current code table. The present invention of an entropy coding method for coding video prediction residual coefficients fully considers the context information and the rules of symbol's conditional probability distribution by designing different tables for different block types and different regions of level. The coding efficiency is improved and no impact to computational implementation complexity is involved.
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Gao Wen
Lu Yan
Ma Siwei
Wang Qiang
Zhao Debin
Anyikire Chikaodili
Institute of Computing Technology Chinese Academy of Science
J.C. Patents
Kelley Christopher S
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