ALEXANDRIA, Va., June 16 -- United States Patent no. 12,309,419, issued on May 20, was assigned to HFI INNOVATION INC. (Zhubei, Taiwan).
"Method and apparatus of motion vector constraint for video coding" was invented by Tzu-Der Chuang (Hsinchu, Taiwan), Ching-Yeh Chen (Hsinchu, Taiwan), Yu-Wen Huang (Hsinchu, Taiwan) and Chih-Wei Hsu (Hsinchu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Method and apparatus of Inter prediction for video coding are disclosed. When a sub-block motion compensation coding tool is selected for the current block, the method generates sub-block MVs (motion vectors) associated with multiple sub-blocks, which are included or contained in the current block, according to the...