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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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2.发明申请OPTICAL TOUCH SYSTEM WITH BRIGHTNESS COMPENSATION AND BRIGHTNESS COMPENSATION METHOD THEREOF 有权具有亮度补偿和亮度补偿方法的光学触摸系统公开(公告)号：US20140111481A1
公开(公告)日：2014-04-24
申请号：US14052481
申请日：2013-10-11
Applicant: PixArt Imaging Inc.
Inventor： Cheng-Nan TSAI , Tzung-Min SU , Chih-Hsin LIN , Yaun-Yu PENG , Yu-Chia LIN , Chuan-Ching LIN , Teng Wei HSU
IPC: G06F3/042
CPC classification number: G06F3/042
Abstract: There is provided an optical touch system including a touch surface, a plurality of image sensors and a plurality or compensation light sources, wherein each of the image sensors is adjacent to one of the compensation light sources. When one of the image sensors is capturing an image frame, the compensation light source not adjacent to and within a field of view of the image sensor which is capturing the image frame irradiates so as to compensate a brightness distribution of the image frame.
Abstract translation: 提供了一种包括触摸表面，多个图像传感器和多个或补偿光源的光学触摸系统，其中每个图像传感器与补偿光源中的一个相邻。 当其中一个图像传感器正在拍摄图像帧时，不相邻并且在拍摄图像帧的图像传感器的视场内的补偿光源被照射以补偿图像帧的亮度分布。
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公开(公告)号：US20140055416A1
公开(公告)日：2014-02-27
申请号：US13773575
申请日：2013-02-21
Applicant: PIXART IMAGING INC.
Inventor： Ming-Tsan KAO , Tzung-Min SU , Chih-Hsin LIN
IPC: G06F3/042
CPC classification number: G06F3/042 , G06F3/0416 , G06F3/0421 , G06F2203/04101
Abstract: An operation method of an optical touch system is provided. The optical touch system includes a touch surface, a light sensing unit, a switch unit and an analog-to-digital conversion unit. The light sensing unit includes a plurality of light sensing elements. The operation method includes: turning on one specific light sensing element group and thereby configuring the light sensing elements thereof to sense the light on the touch surface; and controlling the switch unit to electrically connect the light sensing elements of the turned-on light sensing element group to the input terminals of the analog-to-digital conversion unit, respectively, so as to transmit the sensing signals outputted from the turned-on light sensing element group to the input terminals, and thereby configuring the analog-to-digital conversion unit to generate at least one digital output signal according to the sensing signals supplied to the input terminals thereof. An optical touch system is also provided.
Abstract translation: 提供了一种光学触摸系统的操作方法。 光学触摸系统包括触摸表面，光感测单元，开关单元和模数转换单元。 光感测单元包括多个光感测元件。 该操作方法包括：打开一个特定的感光元件组，从而配置其感光元件以感测触摸表面上的光; 并且控制开关单元将导通的光感测元件组的光感测元件分别电连接到模数转换单元的输入端，以便传输从开启 光感测元件组合到输入端子，从而配置模数转换单元，以根据提供给其输入端的感测信号产生至少一个数字输出信号。 还提供了光学触摸系统。
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公开(公告)号：US20130162601A1
公开(公告)日：2013-06-27
申请号：US13657969
申请日：2012-10-23
Applicant: PixArt Imaging Inc.
Inventor： Tzung-Min SU , Chih-Hsin LIN , Yi-Hsien KO , Ming-Tsan KAO
IPC: G06F3/042
CPC classification number: G06F3/0421
Abstract: There is provided an optical touch system including at least one lighting unit, at least one image sensing module and a processing unit. The image sensing module is configured to capture light of a pointer and the lighting unit to generate a two-dimensional image and to convert entire of the two-dimensional image to a one-dimensional feature. The processing unit positions the pointer according to the one-dimensional feature.
Abstract translation: 提供了一种光学触摸系统，其包括至少一个照明单元，至少一个图像感测模块和处理单元。 图像感测模块被配置为捕获指针和照明单元的光以生成二维图像并将整个二维图像转换为一维特征。 处理单元根据一维特征定位指针。
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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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Patent Agency Ranking
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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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
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.
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公开(公告)号：US20140043297A1
公开(公告)日：2014-02-13
申请号：US13856432
申请日：2013-04-03
Applicant: PIXART IMAGING INC.
Inventor： Tzung-Min SU , Chi-Chieh LIAO , Han-Ping CHENG , Chih-Hsin LIN , Ming-Tsan KAO
IPC: G06F3/042
CPC classification number: G06F3/042 , G06F3/0418 , G06F3/0428 , G06F2203/04104
Abstract: An optical touch control method includes steps of: providing a bright background from at least one edge of a touch surface in a first period; providing illumination light to the touch surface in a second period; capturing a first image of an indicator object blocking a portion of the bright background in the first period; and capturing a second image of the indicator object reflecting the illumination light in the second period. An optical touch system is also provided.
Abstract translation: 光学触摸控制方法包括以下步骤：在第一周期中从触摸表面的至少一个边缘提供明亮的背景; 在第二周期中向所述触摸表面提供照明光; 捕获在所述第一周期中阻挡所述明亮背景的一部分的指示对象的第一图像; 以及在所述第二周期中捕获反映所述照明光的所述指示对象的第二图像。 还提供了光学触摸系统。
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公开(公告)号：US20200004943A1
公开(公告)日：2020-01-02
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：US20160132186A1
公开(公告)日：2016-05-12
申请号：US15000300
申请日：2016-01-19
Applicant: PixArt Imaging Inc.
Inventor： Cheng-Nan TSAI , Tzung-Min SU , Chih-Hsin LIN
IPC: G06F3/042
CPC classification number: G06F3/0421 , G06F3/042 , G06F2203/04104
Abstract: The present invention provides an optical touch system configured to determine an object region according to a brightness information acquired by a brightness sensing unit and to identify a block information of objects within the object region according to an image information acquired by an image sensing unit. The present invention further provides an objection detection method for an optical touch system.
Abstract translation: 本发明提供了一种光学触摸系统，其被配置为根据由亮度感测单元获取的亮度信息来确定对象区域，并且根据由图像感测单元获取的图像信息来识别对象区域内的对象的块信息。 本发明还提供了一种用于光学触摸系统的异物检测方法。
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