ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,527,501, issued on Jan. 20, was assigned to KINGFAR INTERNATIONAL INC. (Beijing).
"Photoelectric physiological signal acquiring and processing device" was invented by Qichao Zhao (Beijing) and Ran Yang (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a photoelectric physiological signal acquiring and processing device including a light source, a photoelectric sensing device, an acquisition unit, an analog-to-digital device, and a microprocessing unit. The acquisition unit includes a current-to-voltage conversion module, a filtering device, and an amplification circuit. The photoelectric sensing device acquires a li...