ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,738,939, issued on Sept. 15, was assigned to Alps Alpine Co. Ltd. (Tokyo).
"Input device" was invented by Tomoki Yamada (Miyagi-ken, Japan), Makoto Abe (Miyagi-ken, Japan) and Toshiki Nakamura (Miyagi-ken, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An input device includes: a light-emitting diode; a switching element connected in series with the light-emitting diode, the switching element switching the light-emitting diode between the on and off states; an electrostatic sensor having a detection electrode capacitively coupled to a circuit portion disposed between the light-emitting diode and the switching element; and a capacitor having a fir...