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:
Jul. 08, 2025
Filed:
Mar. 08, 2021
Applicant:
Interdigital Ce Patent Holdings, Sas, Paris, FR;
Inventors:
Philippe De Lagrange, Betton, FR;
Karam Naser, Mouaze, FR;
Philippe Bordes, Laille, FR;
Fabrice Leleannec, Betton, FR;
Assignee:
INTERDIGITAL CE PATENT HOLDINGS, SAS, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 19/70 (2014.01); H04N 19/124 (2014.01); H04N 19/176 (2014.01);
U.S. Cl.
CPC ...
H04N 19/124 (2014.11); H04N 19/176 (2014.11); H04N 19/70 (2014.11);
Abstract
A method and apparatus to improve compression efficiency in a video compression scheme enables separate control of a local chroma quantization parameter. The control can be used to disable a local chroma quantization parameter. One embodiment uses an existing local luma quantization parameter control flag for controlling local chroma quantization parameter. Another embodiment includes a separate local chroma quantization parameter control flag. Bitstream syntax is used to convey the flags.