ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,944, issued on July 21, was assigned to Wacom Co. Ltd. (Saitama, Japan).

"Active stylus downlink signal transmission timing control relative to sensor controller" was invented by Takeshi Koike (Kanagawa, Japan) and Hideyuki Hara (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method in which a sensor controller is connected to a sensor having an electrode group provided together with a display panel configured to operate in during a variable refresh cycle among a plurality of refresh cycles, and an active stylus performs bidirectional communication with the sensor controller. According to the method, the sensor controller acquires a present ...