ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,439,087, issued on Oct. 7, was assigned to BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY Co. LTD. (Beijing).

"Methods and apparatus on transform and coefficient signaling" was invented by Xiaoyu Xiu (Beijing), Tsung-Chuan Ma (Beijing), Yi-Wen Chen (Beijing), Xianglin Wang (Beijing), Hong-Jheng Jhu (Beijing) and Bing Yu (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for video coding includes determining whether any coding group of a transform block located within a second region has a non-zero coefficient. The transform block comprises a first region and the second region. Further, in accordance with a determination that no coding group ...