ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,777,170, issued on Oct. 27, was assigned to TENCENT AMERICA LLC (Palo Alto, Calif.).

"Method on warp delta signaling improvements" was invented by Han Gao (San Diego), Liang Zhao (Sunnyvale, Calif.), Xin Zhao (San Jose, Calif.) and Shan Liu (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods for encoding and decoding using warp motion modes are provided. A method includes receiving a bitstream that includes a coded picture; obtaining warp information that is signaled in the bitstream, the warp information including a warp type indicating a number of parameters to be corrected by delta values, the number of parameters def...