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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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62.发明授权公开(公告)号：US11224384B2
公开(公告)日：2022-01-18
申请号：US16177433
申请日：2018-11-01
Applicant: PixArt Imaging Inc.
Inventor： Ren-Hau Gu , Chih-Hsin Lin
IPC: A61B5/00 , A61B5/024 , A61B5/0245 , A61B5/25
Abstract: There is provided a heart rate detection device including a sensing unit for sensing emergent light from subcutaneous tissues illuminated by a single light source of multiple light colors to output multiple light detection signals associated with multiple wavelengths. The heart rate detection device further includes a processor uses the multiple light detection signals associated with the multiple wavelengths to cancel motion artifact to obtain a clean heart rate signal.
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公开(公告)号：US10959625B2
公开(公告)日：2021-03-30
申请号：US15785416
申请日：2017-10-16
Applicant: PixArt Imaging Inc.
Inventor： Ren-Hau Gu
Abstract: A method for measuring physiologically characteristics of user includes: using at least one light emitting unit to emit light ray including first light component corresponding to first wavelength and second light component corresponding to second wavelength different from the first wavelength; using an image sensing circuit to sense and generate at least one physiologically characteristics measurement signal in response to the light ray; performing an offset calibration operation upon the physiologically characteristics measurement signal to generate at least one calibrated measurement signal; and, calculating the calibrated measurement signal to estimate a physiologically characteristics result.
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64.发明申请公开(公告)号：US20200233210A1
公开(公告)日：2020-07-23
申请号：US16840477
申请日：2020-04-06
Applicant: PixArt Imaging Inc.
Inventor： Ren-Hau Gu , Chih-Hsin Lin
IPC: G02B27/00 , A61B5/1455 , A61B5/00 , A61B5/024
Abstract: A light sensing method, applied to a light sensing system comprising a light sensor and at least one light source. The light sensor comprises a plurality of light sensing units. The light sensing method comprises: controlling the light sensor to capture images according to the light source; generating an exposure condition according brightness that each of the light sensing units senses, to control all the light sensing units to generate a target brightness distribution according to the exposure condition; and controlling the light sensing units to sense 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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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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Patent Agency Ranking
公开(公告)号：US09836132B2
公开(公告)日：2017-12-05
申请号：US14793747
申请日：2015-07-08
Applicant: PixArt Imaging Inc.
Inventor： Chun-Wei Chen , Ren-Hau Gu
CPC classification number: G06F3/0317
Abstract: An image processing method capable of detecting noise includes adjusting a lighting unit to acquire an over-exposure image, comparing each pixel of the over-exposure image with at least one threshold value, labeling a pixel of the over-exposure image as the noise while bright intensity of the pixel is lower than the threshold value, and removing the noise to execute a displacement detecting calculation.
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公开(公告)号：US09606636B2
公开(公告)日：2017-03-28
申请号：US15240120
申请日：2016-08-18
Applicant: PIXART IMAGING INC.
Inventor： Chun-Wei Chen , Ren-Hau Gu , Ching-Lin Chung
CPC classification number: G06F3/0308 , G06F3/0304 , H04N5/2353 , H04N5/2354
Abstract: An optical processing apparatus, a light source luminance adjustment method, and a non-transitory computer readable medium thereof are provided. The optical processing apparatus includes a light source unit, a processing unit, and an image sensing unit, wherein the processing unit is electrically connected to the light source unit and the image sensing unit. The light source unit provides a beam of light. The processing unit defines a frame rate, defines a plurality of time instants within a time interval, and sets the light source unit to a luminance value at each of the time instants. A length of the time interval is shorter than the reciprocal of the frame rate. The luminance values are different and are within a range. The image sensing unit captures an image by an exposure time length at each of the time instants, wherein the exposure time lengths are the same.
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公开(公告)号：US09311072B2
公开(公告)日：2016-04-12
申请号：US13888379
申请日：2013-05-07
Applicant: PixArt Imaging Inc.
Inventor： Chun-Wei Chen , Ren-Hau Gu
CPC classification number: G06F8/65 , G06F3/03543 , G06F8/654 , G06F2203/0384 , G08C17/00 , H04B5/0031 , H04B5/0062 , H04L67/125 , H04L67/34 , H04W4/023
Abstract: A method of automatically updating a datum is disclosed in the present invention. The method is applied to a signal outputting device and at least one signal receiving device for datum updating transmission. The method includes outputting a detecting signal to detect whether the signal receiving device is located within an effective range of the detecting signal, receiving a reacting signal generated according to the detecting signal, outputting a request of datum transmission when a distance is smaller than a threshold value, and transmitting the datum to the signal receiving device by wireless transmission when the request is allowed, so as to drive the signal receiving device to execute application program according to the updated datum. The detecting signal represents the distance between the signal outputting device and the signal receiving device.
Abstract translation: 在本发明中公开了一种自动更新数据的方法。 该方法应用于信号输出装置和用于基准更新传输的至少一个信号接收装置。 该方法包括输出检测信号以检测信号接收装置是否位于检测信号的有效范围内，接收根据检测信号产生的反应信号，当距离小于阈值时输出基准传输请求 值，并且当允许请求时通过无线传输将数据发送到信号接收装置，以便驱动信号接收装置根据更新的数据执行应用程序。 检测信号表示信号输出装置与信号接收装置之间的距离。
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公开(公告)号：US09310897B2
公开(公告)日：2016-04-12
申请号：US14183620
申请日：2014-02-19
Applicant: PIXART IMAGING INC.
Inventor： Chun-Wei Chen , Ren-Hau Gu , Shih-Wei Kuo
IPC: G06F3/0354
CPC classification number: G06F3/03543 , G06F3/0317 , G06F3/0383
Abstract: There is provided a displacement detection device including a light source, an image sensor and a control and processing unit. The light source is configured to illuminate a work surface. The image sensor is configured to receive reflected light from the work surface. The control and processing unit is configured to adjust a block size of comparison blocks according to a quality parameter.
Abstract translation: 提供了一种包括光源，图像传感器和控制和处理单元的位移检测装置。 光源被配置为照亮工作表面。 图像传感器被配置为接收来自工作表面的反射光。 控制和处理单元被配置为根据质量参数调整比较块的块大小。
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70.发明申请公开(公告)号：US20160050700A1
公开(公告)日：2016-02-18
申请号：US14607091
申请日：2015-01-28
Applicant: PixArt Imaging Inc.
Inventor： Ren-Hau Gu , Ming-Tsan Kao
IPC: H04W76/02 , H04W4/00 , H04B10/116
CPC classification number: H04B10/116 , H04B10/1141 , H04W4/80 , H04W84/18
Abstract: A first electronic apparatus capable of pairing with a second electronic apparatus for wireless communication includes a light sensor and a processing circuit. The light sensor is used for detecting light emitted by the second electronic apparatus. The processing circuit is coupled the light sensor and used for decoding the detected light to generate decoded pairing data. The first and second electronic apparatuses pair successfully according to the decoded pairing data. The light carrying the pairing data is generated by the second electronic apparatus based on at least one of brightness variation(s), color variation(s), and pattern variation(s).
Abstract translation: 能与第二电子设备进行无线通信配对的第一电子设备包括光传感器和处理电路。 光传感器用于检测由第二电子设备发射的光。 处理电路耦合光传感器并用于解码检测到的光以产生解码配对数据。 第一和第二电子设备根据解码的配对数据成功配对。 携带配对数据的光由第二电子设备基于亮度变化，颜色变化和图案变化中的至少一个产生。
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