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公开(公告)号：US11369316B2
公开(公告)日：2022-06-28
申请号：US16595006
申请日：2019-10-07
Applicant: PixArt Imaging Inc.
Inventor： Ren-Hau Gu , Yen-Min Chang , Ming-Chang Li , Chih-Hsin Lin
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.
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公开(公告)号：US11980440B2
公开(公告)日：2024-05-14
申请号：US18076441
申请日：2022-12-07
Applicant: PixArt Imaging Inc.
Inventor： Ming-Chang Li , Ren-Hau Gu
IPC: A61B5/024 , A61B5/00 , A61B5/1455
CPC classification number: A61B5/0059 , A61B5/02427 , A61B5/02438 , A61B5/14558 , A61B5/7246 , A61B2562/046
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.
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公开(公告)号：US12042265B2
公开(公告)日：2024-07-23
申请号：US18202965
申请日：2023-05-29
Applicant: PixArt Imaging Inc.
Inventor： Ming-Chang Li
CPC classification number: A61B5/0816 , A61B5/0077 , A61B5/721 , A61B2562/0219
Abstract: A respiration rate detection device including a photoplethysmography (PPG) detector, an acceleration detector and a processing unit is provided. The processing unit calculates an acceleration peak frequency in an acceleration frequency spectrum, and takes a PPG acceleration peak frequency in a PPG frequency spectrum corresponding to the acceleration peak frequency as a respiration rate.
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Patent Agency Ranking
公开(公告)号：US11701027B2
公开(公告)日：2023-07-18
申请号：US16412500
申请日：2019-05-15
Applicant: PixArt Imaging Inc.
Inventor： Ming-Chang Li
CPC classification number: A61B5/0816 , A61B5/0077 , A61B5/721 , A61B2562/0219
Abstract: A respiration rate detection device including a photoplethysmography (PPG) detector, an acceleration detector and a processing unit is provided. The processing unit calculates an acceleration peak frequency in an acceleration frequency spectrum, and takes a PPG acceleration peak frequency in a PPG frequency spectrum corresponding to the acceleration peak frequency as a respiration rate.
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公开(公告)号：US11583183B2
公开(公告)日：2023-02-21
申请号：US16401523
申请日：2019-05-02
Applicant: PixArt Imaging Inc.
Inventor： Ming-Chang Li , Ren-Hau Gu
IPC: A61B5/024 , A61B5/00 , 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.
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公开(公告)号：US12193785B2
公开(公告)日：2025-01-14
申请号：US18628841
申请日：2024-04-08
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.
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公开(公告)号：US11771375B2
公开(公告)日：2023-10-03
申请号：US16534198
申请日：2019-08-07
Applicant: PixArt Imaging Inc.
Inventor： Ming-Chang Li , Ren-Hau Gu
CPC classification number: A61B5/721 , A61B5/02416 , A61B5/02438 , A61B5/725 , A61B5/7257
Abstract: A heart rate detection module including a PPG measuring device, a motion sensor and a processing unit is provided. The PPG measuring device is configured to detect a skin surface in a detection period to output a PPG signal. The motion sensor is configured to output an acceleration signal corresponding to the detection period. The processing unit is configured to respectively convert the PPG signal and the acceleration signal to first frequency domain information and second frequency domain information, determine a denoising parameter according to a maximum spectrum peak value of the second frequency domain information to denoise the first frequency domain information, and calculate a heart rate according to a maximum spectrum peak value of the denoised first frequency domain information.
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公开(公告)号：US10478128B2
公开(公告)日：2019-11-19
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
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.
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