ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,422,958, issued on Sept. 23, was assigned to Wacom Co. Ltd. (Saitama, Japan).
"Active pen and sensor integrated circuit" was invented by Masayuki Miyamoto (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An active pen is provided, which facilitates avoiding complex computation for phase acquisition on the side of a sensor integrated circuit configured to receive downlink signals from active pens, and allows for generating carrier waves for the downlink signals using a simple configuration, namely, a frequency dividing circuit, while reducing a difference in unused time in one time slot between the active pens. An active pen 2 is configure...