ALEXANDRIA, Va., March 17 -- United States Patent no. 12,580,539, issued on March 17, was assigned to SUMITOMO ELECTRIC INDUSTRIES LTD. (Osaka, Japan).
"Transimpedance amplifier circuit" was invented by Yoshiyuki Sugimoto (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A transimpedance amplifier circuit includes an amplifier circuit configured to convert a current signal into a voltage signal with a gain being varied based on a control signal and a gain control circuit configured to generate the control signal based on an amplitude of the voltage signal, an amplitude detection signal in accordance with the amplitude of the voltage signal, an amplitude reference signal, a differential voltage sig...