ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,091, issued on Dec. 23, was assigned to PIXART IMAGING INC. (Hsin-Chu, Taiwan).
"Head-mounted apparatus and sensing method" was invented by Tsung-Fa Wang (Hsin-Chu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Head-mounted apparatus and a sensing method are provided. The head-mounted apparatus include a pair of frames, a bridge part, a pair of nose pads, a sensing device and a processing circuit. The sensing device includes a first light source and a first light sensor disposed in one of the pair of nose pads according to a first arrangement, and a second light source and a second light sensor disposed in another one of the pair of nose pad...