ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,452,457, issued on Oct. 21, was assigned to BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY Co. LTD. (Beijing).

"Sign prediction for block-based video coding" was invented by Xiaoyu Xiu (San Diego), Ning Yan (San Diego), Yi-Wen Chen (San Diego), Che-Wei Kuo (San Diego), Wei Chen (San Diego), Hong-Jheng Jhu (San Diego), Xianglin Wang (San Diego) and Bing Yu (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "Implementations of the disclosure provide a video decoding apparatus and method for transform coefficient sign prediction on a video decoder side. The method may include selecting a set of candidate transform coefficients from dequantized transform...