ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,295, issued on May 20, was assigned to SHENZHEN GOODIX TECHNOLOGY Co. LTD. (Guangdong, China).

"Signal adjustment method for PPG apparatus and PPG apparatus" was invented by Liangshou Chen (Shenzhen, China) and Saiwen Lu (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a signal adjustment method for a PPG apparatus and a PPG apparatus. The method comprises: when background light data or actual effective light data does not meet a preset background light data range or a preset first effective light data range, performing a dimming operation comprising: determining an estimated current transfer ratio; estimating a driving c...