- 专利标题: Variable length coding method and variable length decoding method
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申请号: US15293735申请日: 2016-10-14
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公开(公告)号: US10057602B2公开(公告)日: 2018-08-21
- 发明人: Satoshi Kondo , Shinya Kadono , Makoto Hagai , Kiyofumi Abe
- 申请人: Godo Kaisha IP Bridge 1
- 申请人地址: JP Tokyo
- 专利权人: Godo Kaisha IP Bridge 1
- 当前专利权人: Godo Kaisha IP Bridge 1
- 当前专利权人地址: JP Tokyo
- 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 ; H04N19/91 ; H03M7/40 ; H04N19/13 ; H04N19/134 ; H04N19/61 ; H04N19/60 ; H04N19/14 ; H04N19/18 ; H04N19/93 ; H04N19/44 ; H04N19/122 ; H04N19/124 ; H04N19/182 ; H04L12/801 ; H04N19/176 ; H04N19/172
摘要:
The present invention is a variable length coding method 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 comprises: 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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