ALEXANDRIA, Va., May 12 -- United States Patent no. 12,625,581, issued on May 12, was assigned to PixArt Imaging Inc. (Hsin-Chu City, Taiwan).
"Optical navigation device and control device using the optical navigation device" was invented by Ching-Shun Chen (Hsin-Chu City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A control device comprising a processing circuit and an optical navigation device is disclosed. The optical navigation device comprises: a circuit board; an optical touch sensor, provided to the circuit board, configured to generate a touch sensing result; and a movement detecting device, configured to detect a movement of the optical touch sensor. The processing circuit generates a con...