ALEXANDRIA, Va., April 7 -- United States Patent no. 12,596,454, issued on April 7, was assigned to Synaptics Inc. (San Jose, Calif.).
"Multi-frequency zero-row-sum code-division-multiplexing (CDM) touch sensing" was invented by Guozhong Shen (Fremont, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An input device includes a plurality of sensor electrodes and a processing system. The plurality of sensor electrodes includes transmitter electrodes and receiver electrodes. The processing system configured to: drive the transmitter electrodes using multiple frequencies and multiple zero-row-sum code-division-multiplexing (CDM) drive matrices, wherein respective subsets of the transmitter electrodes are dr...