ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,413,755, issued on Sept. 9, was assigned to NOKIA TECHNOLOGIES OY (Espoo, Finland).

"Luma mapping with chroma scaling for gradual decoding refresh" was invented by Limin Wang (San Diego), Krit Panusopone (San Diego) and Seungwook Hong (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method, apparatus, and computer program product provide for management of luma mapping with chroma scaling (LMCS) processes for Gradual Decoding Refresh (GDR) pictures. In the context of a method, the method accesses a picture to be decoded and determines whether the picture is a GDR picture. The method can also prevent a LMCS decoding process from being applied ...