ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,981, issued on Dec. 30, was assigned to Wacom Co. Ltd. (Saitama, Japan).
"Stylus and sensor controller" was invented by Hideyuki Hara (Tokyo) and Yoshio Nomura (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A stylus capable of bidirectionally communicating with a sensor controller includes a receiver that receives an uplink signal sent by the sensor controller, a controller that determines whether a signal having a predetermined waveform is to be continuously sent over a second time period or to be continuously sent over a first time period longer than the second time period, on the basis of the uplink signal, and a transmitter that ...