US Patent Issued to FITBIT on March 3 for "Optical device for determining pulse rate" (California Inventors)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,329, issued on March 3, was assigned to FITBIT INC. (San Francisco).

"Optical device for determining pulse rate" was invented by Jung Ook Hong (San Jose, Calif.) and Shelten Gee Jao Yuen (Berkeley, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Some embodiments provide a wearable monitoring device including a motion sensor and a photo (PPG) sensor. The PPG sensor includes (i) a periodic light source, (ii) a photo detector, and (iii) circuitry determining a user's heart rate from an output of the photo detector. Some embodiments provide methods for operating a heart rate monitor of a wearable monitoring device to measure one or more characteri...