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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10623781 B1

PDFFull Text
Date of Patent:
Apr. 14, 2020

Filed:

Jul. 24, 2018

Variable length coding method and variable length decoding method

Applicant:

Godo Kaisha Ip Bridge 1, Tokyo, JP;

Inventors:

Satoshi Kondo, Kyoto, JP;

Shinya Kadono, Fukuoka, JP;

Makoto Hagai, Osaka, JP;

Kiyofumi Abe, Osaka, JP;

Assignee:

GODO KAISHA IP BRIDGE 1, Tokyo, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Tung T Vo

Int. Cl.
CPC ...
H04N 19/91 (2014.01); H03M 7/40 (2006.01); H04N 19/134 (2014.01); H04N 19/61 (2014.01); H04N 19/60 (2014.01); H04N 19/14 (2014.01); H04N 19/18 (2014.01); H04N 19/93 (2014.01); H04N 19/13 (2014.01); H04N 19/44 (2014.01); H04N 19/122 (2014.01); H04N 19/124 (2014.01); H04N 19/182 (2014.01); H04L 12/801 (2013.01); H04N 19/176 (2014.01); H04N 19/172 (2014.01);
U.S. Cl.
CPC ...
H04N 19/91 (2014.11); H03M 7/40 (2013.01); H03M 7/4006 (2013.01); H04L 47/29 (2013.01); H04N 19/122 (2014.11); H04N 19/124 (2014.11); H04N 19/13 (2014.11); H04N 19/134 (2014.11); H04N 19/14 (2014.11); H04N 19/176 (2014.11); H04N 19/18 (2014.11); H04N 19/182 (2014.11); H04N 19/44 (2014.11); H04N 19/60 (2014.11); H04N 19/61 (2014.11); H04N 19/93 (2014.11); H04N 19/172 (2014.11);
Abstract

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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