ALEXANDRIA, Va., June 4 -- United States Patent no. 12,318,177, issued on June 3, was assigned to Honor Device Co. Ltd. (Shenzhen, China).
"Terminal based on photo plethysmo graph PPG" was invented by Xinpei Cai (Shenzhen, China), Bingxin Liu (Shenzhen, China), Yi Liu (Shenzhen, China) and Yinjiong Tan (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of this application provide a terminal based on photo plethysmo graph PPG. The terminal includes an LED, an AFE chip, a processor, a delay circuit, and a plurality of PDs, the first PD is configured to receive a second optical signal reflected by the skin of the user, and convert the second optical signal into a first electrical signal...