US Patent Issued to Huawei Technologies'Co., 'Ltd.' on Oct. 28 for "Light-emitting device driving circuit, PPG sensor, and electronic device" (Chinese Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,457,669, issued on Oct. 28, was assigned to Huawei Technologies'Co.'Ltd.' (Shenzhen, China).

"Light-emitting device driving circuit, PPG sensor, and electronic device" was invented by Sulin Yang (Shenzhen, China) and Yi Xi (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light-emitting device driving circuit includes: a voltage conversion circuit, at least one light-emitting device, a current driving circuit, and a controller. Any light-emitting device and the current driving circuit are coupled in series between an output terminal and a ground terminal of the voltage conversion circuit. The controller is configured to output a first co...