ALEXANDRIA, Va., June 9 -- United States Patent no. 12,650,619, issued on June 9, was assigned to 1FINITY Inc. (Kawasaki, Japan).
"Delay control circuit, optical transmission apparatus, and delay control method" was invented by Yohei Sobu (Shinagawa, Japan) and Yukito Tsunoda (Sagamihara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A delay control circuit includes a delay circuit configured to provide a predetermined delay to signals input to a plurality of electrode segments provided in series along one or both of two waveguides forming a Mach-Zehnder interferometer of an optical modulator, a control circuit configured to select two electrode segments from the plurality of electrode segments, and c...