公开(公告)号：US20180271391A1

公开(公告)日：2018-09-27

申请号：US15996652

申请日：2018-06-04

Applicant: PixArt Imaging Inc.

Inventor： Chiung-Wen LIN ,  Wei-Ru HAN ,  Yang-Ming CHOU ,  Cheng-Nan TSAI ,  Ren-Hau GU ,  Chih-Yuan CHUANG

IPC: A61B5/024 ,  A61B5/00

CPC classification number: A61B5/02427 ,  A61B5/742 ,  A61B5/7485 ,  A61B2562/046

Abstract: A physiological detection system including an array sensor and a processing unit is provided. The array sensor is configured to output array PPG signals. The processing unit is configured to construct a 3D energy distribution according to the array PPG signals to accordingly identify different microcirculation states.

公开(公告)号：US20170196469A1

公开(公告)日：2017-07-13

申请号：US15350619

申请日：2016-11-14

Applicant: PIXART IMAGING INC.

Inventor： Wei-Ru HAN ,  Ren-Hau GU ,  Chih-Yuan CHUANG

IPC: A61B5/021 ,  A61B5/08 ,  A61B5/00

CPC classification number: A61B5/02125 ,  A61B5/0082 ,  A61B5/02416 ,  A61B5/0816 ,  A61B5/6831 ,  A61B5/7239 ,  A61B5/7257

Abstract: A blood pressure detection method includes the steps of: acquiring a PPG signal from a skin surface using a light sensing element; calculating a blood pressure corresponding to each pulse duration according to at least one pressure estimation model and a time difference between two feature points within one pulse duration; calculating a breathing period; averaging a plurality of blood pressures within the breathing period to generate an average blood pressure; and showing the average blood pressure with a display device.

公开(公告)号：US20190209026A1

公开(公告)日：2019-07-11

申请号：US16355864

申请日：2019-03-18

Applicant: PixArt Imaging Inc.

Inventor： Wei-Ru HAN ,  Chih-Yuan CHUANG

IPC: A61B5/026 ,  A61B5/0295 ,  A61B5/00 ,  A61B5/01

CPC classification number: A61B5/0261 ,  A61B5/015 ,  A61B5/0295 ,  A61B5/7235 ,  A61B5/742

Abstract: A microcirculation detection system including a heating device, a photosensitive array and a processing unit is provided. The heating device is used to heat a skin area. The photosensitive array is used to detect outgoing light from the skin area, and output a plurality of brightness variation signals respectively at different time points within a heating period. The processing unit is used to calculate a change of an array energy distribution varied within the heating period according to the plurality of brightness variation signals to accordingly identify a microcirculation state.

公开(公告)号：US20170150919A1

公开(公告)日：2017-06-01

申请号：US15337614

申请日：2016-10-28

Applicant: PIXART IMAGING INC.

Inventor： Chih-Yuan CHUANG ,  Wei-Ru HAN ,  Ming-Chang LI

IPC: A61B5/00 ,  A61B5/08

CPC classification number: A61B5/486 ,  A61B5/0002 ,  A61B5/0059 ,  A61B5/02416 ,  A61B5/02438 ,  A61B5/0816 ,  A61B5/6802 ,  A61B5/725 ,  A61B5/7278 ,  A61B5/7405 ,  A61B5/742 ,  A61B5/7455 ,  A61B5/746

Abstract: A breath detection method includes the steps of: receiving a PPG signal; recognizing a low frequency carrier of the PPG signal; recognizing a rising part of the low frequency carrier and a falling part of the low frequency carrier, wherein a frequency of the low frequency carrier represents a breathing cycle period of a user, the rising part represents one of a breathing out state and a breathing in state of the user, and the falling part represents the other one of the breathing out state and the breathing in state; and real-timely outputting at least one of the breathing cycle period, the breathing out state or the breathing in state.