ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,838, issued on Dec. 23, was assigned to Wacom Co. Ltd. (Saitama, Japan).
"Active stylus" was invented by Hideyuki Hara (Tokyo), Nobutaka Ide (Tokyo) and Yasuo Oda (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An active stylus includes at least one electrode, and an integrated circuit coupled to the at least one electrode. The integrated circuit is configured to: operate in a first mode to unilaterally transmit signals to a sensor controller from one of the at least one electrode; determine whether a pen tip of the active stylus is in contact with a sensor panel; responsive to determining that the pen tip is in contact with the senso...