发明名称 |
CONTEXT ADAPTIVE BINARY ARITHMETIC DECODER METHOD AND APPARATUS |
摘要 |
<p>There are provided a context-based adaptive binary arithmetic decoding method and apparatus. The context-based adaptive binary arithmetic decoding apparatus includes: a context extractor extracting a plurality of contexts from a storage unit storing contexts each including a state value for probability characteristic; a first ROM table storing current probability information so that a current binary symbol of the bit stream is decoded according to a state value of each context; a second ROM table storing predicted probability information so that a next binary symbol of the bit stream is decoded according to a state value of each context; a general mode arithmetic decoder, which performs pipeline processing, loading current probability information from the first ROM table on the basis of a current state value of a context extracted from the context extractor to decode a first binary symbol, and loading predicted probability information from the second ROM table to decode a next remaining binary symbol while decoding the remaining binary symbols; and a bypass mode arithmetic decoder, including a plurality of calculators for parallel processing, simultaneously decoding a plurality of corresponding binary symbols of the bit stream, to perform arithmetic decoding on the remaining symbols if a predetermined condition is satisfied while the general mode arithmetic decoder performs arithmetic decoding on the corresponding symbols of the bit stream. Therefore, by implementing a hardware suitable for context-based adaptive binary arithmetic decoding, it is possible to enhance a decoding speed.</p> |
申请公布号 |
KR20060013021(A) |
申请公布日期 |
2006.02.09 |
申请号 |
KR20040061789 |
申请日期 |
2004.08.05 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KIM, DOO HYUN;CHO, DAE SUNG;LEE, SANG JO |
分类号 |
H04N7/24;G06T9/00;H03M7/40;H04N1/413;H04N19/00;H04N19/436;H04N19/91 |
主分类号 |
H04N7/24 |
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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