ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,074, issued on Dec. 2, was assigned to PixArt Imaging Inc. (Hsin-Chu, Taiwan).
"Distance determining system and proximity sensor" was invented by En-Feng Hsu (Hsin-Chu, Taiwan) and Chia-Kai Chen (Hsin-Chu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A distance determining system comprising: a light source, configured to emit light; a first light sensing region, away from the light source for a first distance, comprising at least one first light sensing device; a second light sensing region, away from the light source for a second distance larger than the first distance, comprising at least one second light sensing device; and a processing c...