ALEXANDRIA, Va., June 19 -- United States Patent no. 12,335,478, issued on June 17, was assigned to TENCENT AMERICA LLC (Palo Alto, Calif.).

"Scan order of secondary transform coefficients" was invented by Madhu Peringassery Krishnan (Mountain View, Calif.), Xin Zhao (San Jose, Calif.) and Shan Liu (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods, apparatus, and computer readable storage medium for processing video data. The method includes extracting a data block from the video data; scanning a first number of data items in the data block following a first scan order to generate a first data sequence; performing a non-separable transform to the first data sequence to obtain a second ...