US Patent Issued to INTERDIGITAL CE PATENT HOLDINGS on March 11 for "High-level constraint flag for local chroma quantization parameter control" (French Inventors)

ALEXANDRIA, Va., March 12 -- United States Patent no. 12,250,378, issued on March 11, was assigned to INTERDIGITAL CE PATENT HOLDINGS SAS (Paris).

"High-level constraint flag for local chroma quantization parameter control" was invented by Philippe De Lagrange (Betton, France), Karam Naser (Mouaze, France), Philippe Bordes (Laille, France) and Fabrice Leleannec (Betton, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "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 parame...