ALEXANDRIA, Va., June 4 -- United States Patent no. 12,323,141, issued on June 3, was assigned to MediaTek Inc. (Hsinchu, Taiwan).

"Level shifter" was invented by Hsin-Cheng Hsu (Hsinchu, Taiwan) and Federico Agustin Altolaguirre (Hsinchu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A level shifter with high reliability is shown, which has a power multiplexer receiving a plurality of power voltage candidates to selectively output a selected power voltage. In response to a low-to-high transition of the input signal of the level shifter, the first output terminal of the level shifter is pulled up to the selected power voltage by the second pull-up device, and the first pull-down device pulls down the...