ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,537,952, issued on Jan. 27, was assigned to LG Electronics Inc. (Seoul, South Korea).

"Low-frequency non-separable transform design method and device" was invented by Moonmo Koo (Seoul, South Korea), Seunghwan Kim (Seoul, South Korea) and Jaehyun Lim (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "According to the disclosure of the present document, a quantization parameter for a quantized transform coefficient present at a DC position within a current block can have the smallest value among quantization parameters which are applied to quantized transform coefficients within the current block, on the basis that an LFNST is applied to ...