公开(公告)号：US20200345234A1

公开(公告)日：2020-11-05

申请号：US16401523

申请日：2019-05-02

Applicant: PixArt Imaging Inc.

Inventor： Ming-Chang LI ,  Ren-Hau GU

IPC: A61B5/00 ,  A61B5/024 ,  A61B5/1455

Abstract: There is provided a physiological detection device including a light source, a light detector, a processing unit and a display device. The light source emits light to illuminate a skin surface. The light detector receives the light from the skin surface to output detected signals. The processing unit confirms an attached state according to the detected signals and controls the display device to show an indication signal or a warning message when the attached state is confirmed not good.

公开(公告)号：US20180092604A1

公开(公告)日：2018-04-05

申请号：US15819592

申请日：2017-11-21

Applicant: PixArt Imaging Inc.

Inventor： Ren-Hau GU ,  Yen-Min CHANG ,  Ming-Chang LI ,  Chih-Hsin LIN

IPC: A61B5/00 ,  A61B5/024

CPC classification number: A61B5/721 ,  A61B5/02416 ,  A61B5/02438 ,  A61B5/725 ,  A61B5/7257 ,  A61B5/7275 ,  A61B2560/0223 ,  A61B2562/0219 ,  A61B2562/028 ,  G16H40/63 ,  G16H50/30

Abstract: There is provided a system architecture including a PPG hardware module and a MEMS hardware module. The PPG hardware module processes PPG raw data, which is generally composed of analog signals or digital signals. The PPG hardware module filters the raw data for later digital calculation to, for example, find out frequency signals with higher peak values. The PPG hardware module then outputs the selected frequency signals to an MCU for heart rate calculation. The MEMS hardware module receives MEMS raw data from a motion detector made of MEMS elements. The MEMS raw data represents motion status of a user that could possibly affect the heart rate determination result. The MEMS hardware module filters the raw data for later digital calculation to find out frequency signals with higher peak values caused by motion.

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.

公开(公告)号：US20160345862A1

公开(公告)日：2016-12-01

申请号：US15132389

申请日：2016-04-19

Applicant: PIXART IMAGING INC.

Inventor： Ming-Chang LI

IPC: A61B5/08 ,  A61B5/024 ,  A61B5/00

CPC classification number: A61B5/0816 ,  A61B5/0077 ,  A61B5/02433 ,  A61B5/7203 ,  A61B5/7257 ,  A61B5/7264 ,  A61B2560/0223

Abstract: A respiration rate detection device including a light source, an optical sensing unit and a processing unit is provided. The light source is configured to provide light to illuminate a skin region. The optical sensing unit is configured to detect emergent light from the skin region and output an intensity variation signal. The processing unit is configured to convert the intensity variation signal to frequency domain data and calculate a respiration rate according to the frequency domain data using at least one respiration algorithm.

Abstract translation: 提供了包括光源，光学感测单元和处理单元的呼吸率检测装置。 光源被配置为提供光以照亮皮肤区域。 光学感测单元被配置为检测来自皮肤区域的出射光并输出强度变化信号。 处理单元被配置为将强度变化信号转换为频域数据，并使用至少一个呼吸算法根据频域数据计算呼吸速率。