Patent ID: 11890081
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 16:
17. A method of continuously estimating blood pressure via a wearable device, the method comprising:
while the wearable device is worn by a user, measuring a first pulse wave signal, using a pulse wave sensor including a light sensor, from the user at a time of estimating the blood pressure;
differentiating or integrating the measured first pulse wave signal to obtain a reference signal;
correcting the measured first pulse wave signal, based on the obtained reference signal, to obtain a second pulse wave signal, wherein correcting the measured first pulse wave signal adjusts for changing light intensity of an environment of the wearable device based on measurements of the light sensor;
estimating the blood pressure, based on the obtained second pulse wave signal and a pulse wave signal measured at a calibration time when the user is in a stable state, different from the time of estimating the blood pressure to provide a continuous blood pressure condition of the user; and
displaying information of the estimated blood pressure on the wearable device.