ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,965, issued on July 1, was assigned to NIPPON TELEGRAPH AND TELEPHONE Corp. (Tokyo).

"Driver circuit" was invented by Teruo Jo (Tokyo), Munehiko Nagatani (Tokyo) and Hideyuki Nosaka (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An embodiment includes an output circuit with transistors and a withstand voltage protection circuit. The withstand voltage protection circuit includes resistors connected between an output signal terminal on the positive phase side and an output signal terminal on the negative phase side. A switch includes an NMOS transistor having a gate terminal connected to the connection point of the resistors, a drain terminal co...