ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,438,544, issued on Oct. 7, was assigned to VANGUARD INTERNATIONAL SEMICONDUCTOR Corp. (Hsinchu, Taiwan).
"Level shifter" was invented by Po-Yuan Tang (Hsinchu, Taiwan), Yang-Sen Yeh (Baoshan Township, Taiwan), Hsuan-Chi Su (Qionglin Township, Taiwan) and Yu-Chuan Chang (Hsinchu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A level shifter receives an input signal through an input terminal and converts the input signal to an output signal. The level shifter includes an input stage circuit and an output stage circuit. The input stage circuit receives the input signal. The input stage circuit includes an N-type transistor that has a gate coupled to...