Quantization matrix for still and moving picture coding

Details Quantization matrix for still and moving picture coding Quantization matrix for still and moving picture coding

2005-11-25

2010-12-28

Payne, David C (Department: 2611)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240010, C375S240020, C375S240040, C375S240050, C375S240060, C375S240070, C375S240120, C375S240130, C375S240140, C375S240150, C375S240160, C375S240180, C382S232000, C382S236000, C382S238000, C382S248000, C382S250000, C348S405100, C348S408100, C348S409100, C348S419100

Reexamination Certificate

active

07860159

ABSTRACT:
A quantization matrix used in inverse quantization is generated. A received bitstream includes a coded truncated quantization matrix. The coded truncated quantization matrix has first coded bits and second coded bits. The first coded bits include bits obtained by coding a transmitting part of quantization elements and the second coded bits includes bits obtained by coding an end code. The coded truncated quantization matrix is decoded until the second coded bits corresponding to the end code are read out, to obtain the transmitting part of quantization elements. At least one additional quantization element is obtained. A complete quantization matrix is generated, using the transmitting part of quantization elements and at least one additional quantization element, by ordering the transmitting part of quantization elements and at least one additional quantization element in a zig-zag scan.

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