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.:
Date of Patent:
Aug. 09, 2011
Filed:
Jan. 11, 2011
Shinya Kadono, Nishinomiya, JP;
Yoshiichiro Kashiwagi, Arcadia, CA (US);
Jiuhuai LU, Palos Verdes Peninsua, CA (US);
Chong Soon Lim, Singapore, SG;
Tao Chen, Diamond Bar, CA (US);
Shinya Kadono, Nishinomiya, JP;
Yoshiichiro Kashiwagi, Arcadia, CA (US);
Jiuhuai Lu, Palos Verdes Peninsua, CA (US);
Chong Soon Lim, Singapore, SG;
Tao Chen, Diamond Bar, CA (US);
Panasonic Corporation, Osaka, JP;
Abstract
The picture coding method according to the present invention is a picture coding method for coding a picture on a block-by-block basis through orthogonal transformation and quantization, and coding a quantization matrix that is used to derive quantization steps for frequencies of orthogonal transformation coefficients, the method comprising: calculating a difference value between each of frequency components included in the quantization matrix and a predetermined value corresponding to said each of the frequency components; and coding the difference value into a variable length code, wherein a code length of the variable length code is shorter as the difference value is smaller, or equal to a code length of a neighboring difference value of said difference value.