ALEXANDRIA, Va., July 3 -- United States Patent no. 12,347,566, issued on July 1, was assigned to VIAVI Solutions Inc. (Chandler, Ariz.).

"Blood pressure estimation with photoplethysmography measurement" was invented by Chang Meng Hsiung (Redwood City, Calif.) and Lan Sun (Santa Rosa, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device may obtain a heartbeat profile of a current subject, the heartbeat profile being based on photoplethysmography (PPG) data associated with a set of wavelength channels. The device may determine a global model including a plurality of classes, each associated with a subject identifier and a blood pressure level (BPL) identifier. The device may identify a class as a cl...