发明申请
US20080063083A1 Variable length coding method and variable length decoding method
有权
可变长度编码方法和可变长度解码方法
- 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: US11907777申请日: 2007-10-17
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公开(公告)号: US20080063083A1公开(公告)日: 2008-03-13
- 发明人: Satoshi Kondo , Shinya Kadono , Makoto Hagai , Kiyofumi Abe
- 申请人: Satoshi Kondo , Shinya Kadono , Makoto Hagai , Kiyofumi Abe
- 优先权: JP2002-118483 20020419; JP2002-126029 20020426; JP2002-363106 20021213
- 主分类号: H04B1/66
- IPC分类号: H04B1/66
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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