ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,489,886, issued on Dec. 2, was assigned to Alibaba (China) Co. Ltd. (Hangzhou, China).

"Deriving bi-prediction with coding unit-level weight indices for merge candidates" was invented by Ru-Ling Liao (Beijing), Jie Chen (Beijing), Yan Ye (San Diego) and Xinwei Li (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A VVC-standard encoder and a VVC-standard decoder are provided, implementing derivation of a BCW index according to cost values based on template matching. A template matching cost can be calculated for each among a set of possible BCW weight values, and a BCW weight value yielding a lowest template matching cost among each template matchin...