发明名称 |
Digital signal coding apparatus, digital signal decoding apparatus, digital signal arithmetic coding method and digital signal arithmetic decoding method |
摘要 |
A digital signal coding apparatus and method makes a compression coding of a digital signal. The coding apparatus and method codes the digital signal by determining a context model to be used for each type of coding data among a plurality of context models. When the digital signal is divided for each predetermined unit to be coded, the coding apparatus and method multiplexes into a bit stream the information representing an initial state of probability of occurrence of the context of model corresponding to the type of the coding data with a bit stream as part of the coded data of the predetermined unit. The present invention also decodes the compressed digital signal.
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申请公布号 |
US7408488(B2) |
申请公布日期 |
2008.08.05 |
申请号 |
US20070781682 |
申请日期 |
2007.07.23 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
SEKIGUCHI SHUNICHI;YAMADA YOSHIHISA;ASAI KOHTARO |
分类号 |
H03M7/00;G06T9/00;H03M7/40;H04N7/24;H04N7/26;H04N7/52 |
主分类号 |
H03M7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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