Invention Grant
- Patent Title: Variable length code decoding apparatus and method with variation in timing of extracting bit string to be decoded depending on code word
- Patent Title (中): 根据代码字提取要解码的位串的定时变化的可变长度码解码装置和方法
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Application No.: US12108118Application Date: 2008-04-23
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Publication No.: US07728745B2Publication Date: 2010-06-01
- Inventor: Yuya Shigenobu , Yoshiyuki Wada , Satoshi Yamaguchi , Kozo Kimura , Takeshi Furuta
- Applicant: Yuya Shigenobu , Yoshiyuki Wada , Satoshi Yamaguchi , Kozo Kimura , Takeshi Furuta
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein P.L.C.
- Priority: JP2007-117774 20070426
- Main IPC: H03M7/40
- IPC: H03M7/40

Abstract:
A variable length code decoding apparatus according to the present invention includes: an extracting unit which extracts a bit string from a beginning of a bit stream; a first storage unit for storing a plurality of code words in which one piece of data has been coded, and decoded data and code lengths respectively corresponding to the code words; a second storage unit for storing a plurality of code words in which two or more pieces of data have been coded, and decoded data and code lengths respectively corresponding to the code words; a first judging unit which judges whether one of the code words stored in the first storage unit is included in the extracted bit string, and, when judged as being included, outputs the decoded data and the code length of the code word; and a second judging unit which judges whether a code word stored in the second storage unit is included in the extracted bit string, and when judged as being included, outputs the decoded data and the code length of the code word, wherein the extracting unit extracts the bit string to be decoded next in the same cycle as a cycle in which the judgment was made by the first judging unit, and extracts the bit string to be decoded next in a cycle following the cycle in which the judgment was made by the second judging unit.
Public/Granted literature
- US20080266147A1 VARIABLE LENGTH CODE DECODING APPARATUS Public/Granted day:2008-10-30
Information query
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