ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,794, issued on Nov. 18, was assigned to Wacom Co. Ltd. (Saitama, Japan).
"Communication method executed between active pen and sensor controller, and active pen" was invented by Sadao Yamamoto (Saitama, Japan) and Yasuo Oda (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An active pen is provided that transmits, through coupling capacitance, a signal to a sensor electrode connected to a sensor controller. The active pen includes a pen tip electrode provided on a leading end in a pen axis direction of the active pen; a peripheral electrode provided behind in the pen axis direction as viewed from the pen tip electrode; and a signal proc...