ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,710,832, issued on Aug. 18, was assigned to Wacom Co. Ltd. (Saitama, Japan).
"Electromagnetic induction pen and position detecting device" was invented by Yosuke Matsuda (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electromagnetic induction pen of an electromagnetic induction system (EMR) system that can achieve a multilevel pen signal. The electromagnetic induction pen includes a resonance circuit that transmits a pen signal by using power obtained from an alternating magnetic field sent out by a position detecting device, and a control circuit that causes the resonance circuit to transmit the pen signal phase-modulated according t...