发明授权
- 专利标题： Variable length coding method and variable length decoding method
- 专利标题（中）： 可变长度编码方法和可变长度解码方法
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申请号： US11907772申请日： 2007-10-17
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公开(公告)号： US09025671B2公开(公告)日： 2015-05-05
- 发明人: Satoshi Kondo , Shinya Kadono , Makoto Hagai , Kiyofumi Abe
- 申请人： Satoshi Kondo , Shinya Kadono , Makoto Hagai , Kiyofumi Abe
- 申请人地址： US CA Torrance
- 专利权人： Panasonic Intellectual Property Corporation of America
- 当前专利权人： Panasonic Intellectual Property Corporation of America
- 当前专利权人地址： US CA Torrance
- 代理机构： Wenderoth, Lind & Ponack, L.L.P.
- 优先权： JP2002-118483 20020419; JP2002-126029 20020426; JP2002-363106 20021213
- 主分类号： H04N7/12
- IPC分类号： H04N7/12 ; H03M7/40 ; H04N19/13 ; H04N19/134 ; H04N19/61 ; H04N19/60 ; H04N19/14 ; H04N19/18 ; H04N19/93
摘要：
A variable length coding method is provided for coding coefficients in each block which are obtained by performing frequency transformation on picture data of a moving picture per block having a predetermined size, and includes: a coefficient scanning step of scanning the coefficients in the block in a predetermined order; and a coding step of coding the coefficients scanned in the coefficient scanning step into variable length codes in a predetermined order by switching a plurality of tables to be used for coding. Here, a direction of switching between the tables may be one-directional. Also, the coding may be non-arithmetic coding.
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