ALEXANDRIA, Va., April 9 -- United States Patent no. 12,271,551, issued on April 8, was assigned to Wacom Co. Ltd. (Saitama, Japan).
"Position detecting device and information processing system" was invented by So Kato (Saitama, Japan) and Tomo Asakura (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A position detecting circuit detects an indicated position on an input surface of a sensor as absolute coordinates. A relative coordinate calculating circuit which, in operation, sequentially obtains the absolute coordinates from the position detecting circuit and calculates relative coordinates indicating the position indicated by an indicator on the input surface, from a difference between previo...