公开(公告)号：US20230051939A1

公开(公告)日：2023-02-16

申请号：US17399201

申请日：2021-08-11

Applicant: MEDIATEK INC.

Inventor： Hung-Chih CHIU ,  Shu-Yu HSU ,  Wei-Han LIU

IPC: A61B5/00 ,  A61B5/024 ,  A61B5/1455 ,  A61B5/08 ,  A61B5/0205 ,  A61B5/113 ,  A61B5/318

Abstract: A physiological monitoring device is provided and includes a physiological sensing device, a first PPG sensor, a vital signs detector, and a PPG controller. The physiological sensing device senses at least one physiological feature of a subject to generate at least one sensing signal. The first PPG sensor senses pulses of a blood vessel of the subject to generate a first PPG signal when the first PPG sensor is activated. The vital signs detector obtains vital signs data according to the at least one sensing signal. The PPG controller detects whether a specific event is happening to the subject according to the vital signs data. In response to detecting that the specific event is happening to the subject, the PPG controller activates the first PPG sensor. The physiological monitoring apparatus obtains a blood oxygen level of the subject according to the first PPG signal.