Digital signal coding/decoding apparatus

Details Digital signal coding/decoding apparatus Digital signal coding/decoding apparatus

H - Electricity

03

M

H03M 7/40 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2756676

A digital signal coding apparatus and method for making a compression coding of a digital signal is taught. The digital signal is arithmetically coded by determining a context model to be used for each type of coding data among a plurality of context models. The digital signal is divided for each predetermined unit to be coded. Multiplexed into a bit stream are information representing an initial state of probability of occurrence of the context of model corresponding to the type of the coding data and information of initializing a register value which shows an arithmetic coding process with a bit stream as part of the coded data of said predetermined unit.

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