US Patent Issued to SLEEP ADVICE TECHNOLOGIES on Aug. 19 for "Photoplethysmography based detection of transitions between awake, drowsiness, and sleep phases of a subject" (Italian Inventor)

ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,390,115, issued on Aug. 19, was assigned to SLEEP ADVICE TECHNOLOGIES S.R.L. (Turin, Italy).

"Photoplethysmography based detection of transitions between awake, drowsiness, and sleep phases of a subject" was invented by Sara Groppo (Turin, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A smart system comprising a contact or contactless PPG sensor to output a PPG signal; and an electronic processing system in communication with the PPG sensor to acquire the PPG signal therefrom and analyse the PPG signal in one or both of time and frequency domains to real-time predict transitions between awake and sleep phases of a subject based on an output of th...