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公开(公告)号：US20220061769A1
公开(公告)日：2022-03-03
申请号：US17523609
申请日：2021-11-10
Applicant: PIXART IMAGING INC.
Inventor： Ren-Hau GU , Chih-Hsin LIN
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：US20160089086A1
公开(公告)日：2016-03-31
申请号：US14731711
申请日：2015-06-05
Applicant: PixArt Imaging Inc.
Inventor： Chih-Hsin LIN , 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.
Abstract translation: 提供了包括PPG测量装置，运动传感器和处理单元的心率检测模块。 PPG测量装置被配置为在检测周期中检测皮肤表面以输出PPG信号。 运动传感器被配置为输出与检测周期相对应的加速度信号。 处理单元被配置为分别将PPG信号和加速度信号转换为第一频域信息和第二频域信息，根据第二频域信息的最大频谱峰值来确定去噪参数，以对第一频域信息进行去噪 ，并根据去噪的第一频域信息的最大频谱峰值计算心率。
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3.发明申请OPTICAL PROCESSING APPARATUS, LIGHT SOURCE LUMINANCE ADJUSTMENT METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM THEREOF 有权光学处理装置，光源照明调整方法及非可编程计算机可读介质公开(公告)号：US20140218556A1
公开(公告)日：2014-08-07
申请号：US13959225
申请日：2013-08-05
Applicant: PIXART IMAGING INC.
Inventor： Chun-Wei CHEN , Ren-Hau GU , Ching-Lin CHUNG
IPC: H04N5/235
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.
Abstract translation: 提供光学处理装置，光源亮度调节方法和非暂时性计算机可读介质。 光学处理装置包括光源单元，处理单元和图像感测单元，其中处理单元电连接到光源单元和图像感测单元。 光源单元提供光束。 处理单元定义帧速率，在时间间隔内定义多个时刻，并将光源单元设置为每个时刻的亮度值。 时间间隔的长度短于帧速率的倒数。 亮度值不同，在一定范围内。 图像感测单元在每个时刻的曝光时间长度捕获图像，其中曝光时间长度相同。
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公开(公告)号：US20130301880A1
公开(公告)日：2013-11-14
申请号：US13943300
申请日：2013-07-16
Applicant: PIXART IMAGING INC.
Inventor： Chun-Wei CHEN , Ren-Hau GU , Shih-Wei KUO
IPC: G06T7/00
CPC classification number: G06T7/0044 , G06F3/0304 , G06F3/0317 , G06F3/03543 , G06F3/0383 , G06T7/74
Abstract: A displacement detection method includes the steps of: capturing a first frame and a second frame; selecting a first block with a predetermined size in the first frame and selecting a second block with the predetermined size in the second frame; determining a displacement according to the first block and the second block; comparing the displacement with at least one threshold; and adjusting the predetermined size according to a comparison result of comparing the displacement and the threshold. The present invention further provides a displacement detection apparatus.
Abstract translation: 位移检测方法包括以下步骤：捕获第一帧和第二帧; 在第一帧中选择具有预定尺寸的第一块，并在第二帧中选择具有预定尺寸的第二块; 确定根据第一块和第二块的位移; 将所述位移与至少一个阈值进行比较; 并根据比较位移和阈值的比较结果调整预定尺寸。 本发明还提供一种位移检测装置。
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公开(公告)号：US20250098968A1
公开(公告)日：2025-03-27
申请号：US18473429
申请日：2023-09-25
Applicant: PIXART IMAGING INC.
Inventor： Ren-Hau GU , Hsiu-Ling YEH
Abstract: There is provided a physiological detection device for detecting physiological signals via a skin surface and including a first light source, a second light source, a first light sensor, a second light sensor and a processor. The first light source emits light via an optical element that causes the first light sensor and the second light sensor to receive different percentages of light energy of the first light source. The first light sensor and the second light sensor receive the same percentage of light energy of the second light source. The processor adjusts emission intensity of the first light source according to an intensity difference between two light energies received by the first and second light sensors as well as an intensity variation of light energy received by the first light sensor to alleviate motion artifacts in the physiological signals.
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Patent Agency Ranking
公开(公告)号：US20230309930A1
公开(公告)日：2023-10-05
申请号：US18200561
申请日：2023-05-22
Applicant: PIXART IMAGING INC.
Inventor： Ren-Hau GU , Chih-Hsin LIN
CPC classification number: A61B5/7207 , A61B5/0006 , A61B5/02416 , A61B5/0064 , A61B5/02438 , A61M2205/3303 , A61B5/0245
Abstract: There is provided a physiological detection device including a white light source, a molding and a pixel array. The white light source is configured to emit white light having a color temperature between 2800K and 3200K. The molding is formed upon the white light source and configured to constrain an emission angle of the white light between 60 and 80 degrees. The pixel array is covered by a filter layer having a passband between 570 nm and 620 nm configured to filter the white light.
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公开(公告)号：US20180228442A1
公开(公告)日：2018-08-16
申请号：US15955000
申请日：2018-04-17
Applicant: PixArt Imaging Inc.
Inventor： CHIH-HSIN LIN , 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：US20130120114A1
公开(公告)日：2013-05-16
申请号：US13671258
申请日：2012-11-07
Applicant: PIXART IMAGING INC.
Inventor： Ren-Hau GU , Ming-Tsan KAO , Sen-Huang HUANG
IPC: G06F7/02
CPC classification number: G06F7/02 , A61B5/0077 , A61B5/02405 , A61B5/0265 , A61B5/0476 , A61B5/0531 , A61B5/165 , A61B5/486 , G06K9/2036
Abstract: A biofeedback control system and method includes monitoring a physiological condition of a user to generate a sensing signal including a physiological information of the user, extracting a physiological variation information from the physiological information to generate a biofeedback signal, and generating a control signal based on the physiological variation information for controlling scenes, scenarios, background music or audio-visual effects of a program or a game. By this way, the biofeedback control system and method can trace a user's mood to automatically adjust a video output or an audio output of an electronic system where a program is playing or a game is running to enhance amusement.
Abstract translation: 生物反馈控制系统和方法包括监视用户的生理状态以产生包括用户的生理信息的感测信号，从生理信息提取生理变异信息以生成生物反馈信号，以及基于所述生物反馈信号生成控制信号 用于控制场景，场景，背景音乐或节目或游戏的视听效果的生理变化信息。 通过这种方式，生物反馈控制系统和方法可以跟踪用户的心情来自动调整程序正在播放或游戏正在运行的电子系统的视频输出或音频输出，以增强娱乐性。
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公开(公告)号：US20240238646A1
公开(公告)日：2024-07-18
申请号：US18323480
申请日：2023-05-25
Applicant: PIXART IMAGING INC.
Inventor： Ming Shun Manson FEI , Sen-Huang HUANG , Kai-Shun CHEN , Ting-Yang CHANG , Ren-Hau GU , Yuan-Hsin LIAO
CPC classification number: A63B24/0062 , A63B22/025 , A63B24/0087 , G06V10/22 , G06V40/161 , A63B2071/0081
Abstract: There is provided a treadmill capable of performing the fall detection. The treadmill includes a light sensor and a processor. The light sensor acquires an image frame toward an operation space. The processor performs the occupancy detection on the image frame using face detection and human detection. Upon not detecting the operation space being occupied by any user during a running state of the treadmill, the processor deactivates the treadmill and raises a fall alarm.
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10.发明申请OPTICAL PROCESSING APPARATUS, LIGHT SOURCE LUMINANCE ADJUSTMENT METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM THEREOF 有权光学处理装置，光源照明调整方法及非可编程计算机可读介质公开(公告)号：US20160357273A1
公开(公告)日：2016-12-08
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.
Abstract translation: 提供光学处理装置，光源亮度调节方法和非暂时性计算机可读介质。 光学处理装置包括光源单元，处理单元和图像感测单元，其中处理单元电连接到光源单元和图像感测单元。 光源单元提供光束。 处理单元定义帧速率，在时间间隔内定义多个时刻，并将光源单元设置为每个时刻的亮度值。 时间间隔的长度短于帧速率的倒数。 亮度值不同，在一定范围内。 图像感测单元在每个时刻的曝光时间长度捕获图像，其中曝光时间长度相同。
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