ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,589, issued on March 18, was assigned to REALTEK SEMICONDUCTOR CORP. (Hsinchu, Taiwan).
"Audio signal modulation and amplification circuit" was invented by Che-Hung Lin (Hsinchu, Taiwan), Chia-I Chuang (Hsinchu, Taiwan) and Yu-An Lee (Hsinchu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An audio signal modulation and amplification circuit includes a common-mode electric potential controller, a carrier generator, and channel circuits. The common-mode electric potential controller is configured to generate one or more first common-mode electric potentials and second common-mode electric potentials. The carrier generator is adapted to receiv...