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

Claim 0:
1. An apparatus implemented in a wearable device worn by a user for continuously estimating blood pressure of the user, the apparatus comprising:
a pulse wave sensor, including a light sensor, configured to measure a first pulse wave signal at a time of estimating the blood pressure from the user;
a processor configured to:
differentiate or integrate the measured first pulse wave signal to obtain a reference signal;
correct 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 apparatus detected by the light sensor; and
estimate the blood pressure of the user, based on the obtained second pulse wave signal and a third 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
a display configured to display the estimated blood pressure of the user.