ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,213,780, issued on Feb. 4, was assigned to PIXART IMAGING INC. (Hsin-Chu, Taiwan).
"Action recognition system and method thereof" was invented by Ren-Hau Gu (Hsin-Chu, Taiwan) and Chung-Wen Lo (Santa Clara, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wearable device is illustrated. The wearable device has a body, at least one light emitting unit, at least one light sensing unit and an action recognition module. The wearable device is suitable for wearing on a wrist of a user. The light emitting unit is disposed on an inner side of the body, and the light emitting unit emits a light beam illuminating at least a portion of the wrist. The light ...