- Patent Title: Variable length coding method and variable length decoding method
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Application No.: US11907771Application Date: 2007-10-17
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Publication No.: US09054734B2Publication Date: 2015-06-09
- Inventor: Satoshi Kondo , Shinya Kadono , Makoto Hagai , Kiyofumi Abe
- Applicant: Satoshi Kondo , Shinya Kadono , Makoto Hagai , Kiyofumi Abe
- Applicant Address: US CA Torrance
- Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
- Current Assignee Address: US CA Torrance
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2002-118483 20020419; JP2002-126029 20020426; JP2002-363106 20021213
- Main IPC: H04B1/66
- IPC: H04B1/66 ; H03M7/40 ; H04N19/13 ; H04N19/134 ; H04N19/61 ; H04N19/60 ; H04N19/14 ; H04N19/18 ; H04N19/93 ; H04N7/12

Abstract:
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.
Public/Granted literature
- US20080056374A1 Variable length coding method and variable length decoding method Public/Granted day:2008-03-06
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