ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,578, issued on Jan. 27, was assigned to PIXART IMAGING INC. (Hsin-Chu, Taiwan).
"Magnetic sensing system" was invented by Chung-Yuo Wu (Hsin-Chu, Taiwan) and Horng-Goung Lai (Hsin-Chu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A magnetic sensing system and a magnetic sensing input device are provided. The magnetic sensing system includes a first electronic device and a second electronic device. The first electronic device includes a first processor and a modulable magnetic source, and the first processor controls the modulable magnetic source according to predetermined information to generate a modulated magnetic field. The second electr...