ALEXANDRIA, Va., June 18 -- United States Patent no. 12,326,537, issued on June 10, was assigned to PixArt Imaging Inc. (Hsin-Chu, Taiwan).
"Optical tracking device" was invented by Ching Geak Chan (Hsin-Chu, Taiwan), Chung-Ting Yang (Hsin-Chu, Taiwan) and Feng-Chi Liu (Hsin-Chu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical tracking device is used to track a target object. An outer surface of the target object is divided into a first region and a second region adjacent to each other, and a marker is disposed on the first region. The optical tracking device includes an optical sensor and an operation processor. The optical sensor has auto exposure function and is adapted to acquire a detec...