ALEXANDRIA, Va., March 5 -- United States Patent no. 12,244,850, issued on March 4, was assigned to ZHEJIANG DAHUA TECHNOLOGY Co. LTD. (Hangzhou, China).

"Sub-block motion prediction method, coding method, and encoder" was invented by Dong Jiang (Hangzhou, China), Jucai Lin (Hangzhou, China), Jun Yin (Hangzhou, China), Feiyang Zeng (Hangzhou, China) and Cheng Fang (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sub-block motion prediction method includes: obtaining a reference block, a co-located frame, and a reference frame of a current block; obtaining a motion vector of the current block, wherein the motion vector corresponds to a set of reference parameters; obtaining a co-located block...