ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,439,511, issued on Oct. 7, was assigned to QUANTA COMPUTER INC. (Taoyuan, Taiwan).

"Input device" was invented by Xiang-Lan Peng (Taoyuan, Taiwan) and Tzu-Lin Chai (Taoyuan, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An input device is provided, including a housing, a circuit board disposed in the housing, an optical module disposed on the circuit board, a movable member movably connected to the housing, and a switch element disposed on the circuit board. When the input device moves to a reference surface, the movable member contacts the reference surface, and the movable member is pushed by the reference surface to actuate the switch element....