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公开(公告)号：US11076768B2
公开(公告)日：2021-08-03
申请号：US16412702
申请日：2019-05-15
Applicant: PixArt Imaging Inc.
Inventor： Sen-Huang Huang , Ren-Hau Gu
Abstract: A physiological detection system including an image sensor, a converting unit, a retrieving unit and a processing unit is provided. The image sensor includes a plurality of pixels respectively configured to output a PPG signal. The converting unit is configured to convert a plurality of PPG signals of a plurality of pixels regions to a plurality of frequency domain signals. The retrieving unit is configured to respectively retrieve a spectral energy of the frequency domain signals corresponding to each of the pixel regions. The processing unit is configured to construct a 3D energy distribution according to the spectral energies.
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公开(公告)号：US11020013B2
公开(公告)日：2021-06-01
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
Abstract: A physiological detection device includes an array sensor and a processing unit. The array sensor is configured to output array photoplethysmography (PPG) signals. The processing unit is configured to construct a 3D energy distribution, and identify an arc-like pattern in the 3D energy distribution according to the array PPG signals to accordingly identify different microcirculation states and an attaching status.
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公开(公告)号：US10891362B2
公开(公告)日：2021-01-12
申请号：US16850753
申请日：2020-04-16
Applicant: PixArt Imaging Inc.
Inventor： Ren-Hau Gu , Chih-Hsin Lin , Tzung-Min Su , Yung-Chang Lin , Jian-Cheng Liao , Chun-Chih Chen
Abstract: A wearable device including a skin sensor and a processor is provided. The processor is configured to receive an authentication data for authenticating a user when a wearing state of the wearable device is adjacent to a skin surface of the user, execute a predetermined function in response to a request when the authentication data matches a pre-stored data and the skin sensor determines that the wearable device does not leave the skin surface after the authentication data is received, and reject or ignore the request when the skin sensor determines that the wearable device leaves the skin surface before the predetermined function is executed.
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公开(公告)号：US10698996B2
公开(公告)日：2020-06-30
申请号：US16563931
申请日：2019-09-09
Applicant: PixArt Imaging Inc.
Inventor： Ren-Hau Gu , Chih-Hsin Lin , Tzung-Min Su , Yung-Chang Lin , Jian-Cheng Liao , Chun-Chih Chen
Abstract: A wearable device including a skin sensor and a processor is provided. The processor is configured to receive an authentication data for authenticating a user when a wearing state of the wearable device is adjacent to a skin surface of the user, execute a predetermined function in response to a request when the authentication data matches a pre-stored data and the skin sensor determines that the wearable device does not leave the skin surface after the authentication data is received, and reject or ignore the request when the skin sensor determines that the wearable device leaves the skin surface before the predetermined function is executed.
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公开(公告)号：US10649206B2
公开(公告)日：2020-05-12
申请号：US15672312
申请日：2017-08-09
Applicant: PixArt Imaging Inc.
Inventor： Ren-Hau Gu , Chih-Hsin Lin
IPC: G02B27/00 , A61B5/00 , A61B5/024 , A61B5/1455
Abstract: A light sensing method applied to a light sensing system comprising a first light sensor and at least one light source. The first light sensor comprises a plurality of light sensing units. The light sensing method comprises: (a) respectively controlling an exposure condition for each of the light sensing units according distances between each one of the light sensing units and the light source; and (b) controlling the light sensing units to sense the light from the light source according to the exposure condition. The light sensing system can have a better SNR via adjusting the exposure condition for each one of the light sensing units. Such light sensing method can be applied to compute physiological parameters.
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Patent Agency Ranking
公开(公告)号：US10524700B2
公开(公告)日：2020-01-07
申请号：US16362880
申请日：2019-03-25
Applicant: PIXART IMAGING INC.
Inventor： Ren-Hau Gu , Chung-Wen Lo
Abstract: An action recognition system is illustrated. The action recognition system has an annular body, at least one light emitting unit, at least one light sensing unit and an action recognition module. The annular body is worn on a movable part of a user. One end of the light emitting unit is exposed on an inner side of the annular body, wherein the light emitting unit emits a first light beam illuminating at least a portion of the movable part. One end of the light sensing unit is exposed on the inner side of the annular body. The light sensing unit operatively senses a second light beam reflected by the at least portion of the movable part and generates a light sensing signal. The action recognition module is configured to operatively determine an action of the user according to the light sensing signal.
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公开(公告)号：US10413249B2
公开(公告)日：2019-09-17
申请号：US15955000
申请日：2018-04-17
Applicant: PixArt Imaging Inc.
Inventor： Chih-Hsin Lin , Ren-Hau Gu
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：US10285627B2
公开(公告)日：2019-05-14
申请号：US14686974
申请日：2015-04-15
Applicant: PIXART IMAGING INC.
Inventor： Ren-Hau Gu , Chung-Wen Lo
Abstract: An action recognition system is illustrated. The action recognition system has an annular body, at least one light emitting unit, at least one light sensing unit and an action recognition module. The annular body is worn on a movable part of a user. One end of the light emitting unit is exposed on an inner side of the annular body, wherein the light emitting unit emits a first light beam illuminating at least a portion of the movable part. One end of the light sensing unit is exposed on the inner side of the annular body. The light sensing unit operatively senses a second light beam reflected by the at least portion of the movable part and generates a light sensing signal. The action recognition module is configured to operatively determine an action of the user according to the light sensing signal.
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公开(公告)号：US10039453B2
公开(公告)日：2018-08-07
申请号：US14720845
申请日：2015-05-25
Applicant: PixArt Imaging Inc.
Inventor： Cheng-Nan Tsai , Hung-Ching Lai , Chih-Yuan Chuang , Hung-Yu Lai , Yung-Chang Lin , Yi-Min Liu , Ren-Hau Gu
Abstract: An optical detecting module with waterproofing function can be installed on a housing of a wearable device and includes an optical detecting component, a light source and a packaging structure. The light source is disposed by the optical detecting component, and the packaging structure provides the waterproofing function to the optical detecting component and the light source. The packaging structure includes a main body, a light emitting unit, alight incoming unit and a waterproofing component. The main body covers the optical detecting component and the light source. The light emitting unit and the light incoming unit are disposed on the main body and respectively face the light source and the optical detecting component. The waterproofing component is filled into a gap formed between the main body and the housing, to prevent moisture from leaking into the gap to rust terminals of the optical detecting component and the light source.
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公开(公告)号：US09354717B2
公开(公告)日：2016-05-31
申请号：US13684864
申请日：2012-11-26
Applicant: PixArt Imaging Inc.
Inventor： Yu-Hao Huang , Ren-Hau Gu , Hsin-Chia Chen , Ming-Tsan Kao
CPC classification number: H04N5/2256 , G06F1/3259 , G06F3/0317 , G06F3/0325 , H04N5/332 , Y02D10/155
Abstract: There is provided an optical navigation device including at least one light source, an image sensor and a processing unit. The light source illuminates a work surface in a first brightness value and a second brightness value. The image sensor receives reflected light from the work surface and outputs a first image frame corresponding to the first brightness value and a second image frame corresponding to the second brightness value. The processing unit calculates a differential image of the first image frame and the second image frame and identifies an operating state according to the differential image.
Abstract translation: 提供了一种包括至少一个光源，图像传感器和处理单元的光学导航装置。 光源以第一亮度值和第二亮度值照亮工作表面。 图像传感器接收来自工作表面的反射光并输出对应于第一亮度值的第一图像帧和对应于第二亮度值的第二图像帧。 处理单元计算第一图像帧和第二图像帧的差分图像，并根据差分图像识别操作状态。
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