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:
Oct. 25, 2022
Filed:
Aug. 04, 2020
Applicant:
Nec Corporation, Tokyo, JP;
Inventors:
Hirofumi Aoki, Tokyo, JP;
Keiichi Chono, Tokyo, JP;
Yuzo Senda, Tokyo, JP;
Kenta Senzaki, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/12 (2006.01); H04N 19/159 (2014.01); H04N 19/196 (2014.01); H04N 19/593 (2014.01); H04N 19/124 (2014.01); H04N 19/157 (2014.01);
U.S. Cl.
CPC ...
H04N 19/159 (2014.11); H04N 19/124 (2014.11); H04N 19/157 (2014.11); H04N 19/196 (2014.11); H04N 19/593 (2014.11);
Abstract
In a video decoding device, a quantization step size decoding unit calculates a quantization step size that controls a granularity of the inverse quantization by, based on an image prediction, selectively using a mean value of at least a quantization step size assigned to a leftwardly adjacent neighboring image block already decoded and a quantization step size assigned to a upwardly adjacent neighboring image block already decoded or a quantization step size assigned to an image block decoded immediately before.