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11.发明授权Exposure mechanism of optical touch system and optical touch system using the same 有权光触摸系统和光触摸系统的曝光机制使用相同公开(公告)号：US09285927B2
公开(公告)日：2016-03-15
申请号：US14052520
申请日：2013-10-11
Applicant: PixArt Imaging Inc
Inventor： Ming-Tsan Kao , Tzung-Min Su , Chih-Hsin Lin
CPC classification number: G06F3/0421 , G06F3/0416
Abstract: An exposure mechanism of an optical touch system, which includes a plurality of image sensors and a plurality of active light sources each irradiating corresponding to the associated image sensor, includes: capturing image frames using the image sensors with a sampling cycle to allow each of the image sensors to capture a bright image, wherein the sampling cycle includes a plurality of working modes and in each of the working modes at least one of the image sensors captures the bright image in a sampling interval; simultaneously capturing a dark image using all the image sensors in a denoising sampling interval; and calculating a differential image between the bright image and the dark image captured by each image sensor.
Abstract translation: 光学触摸系统的曝光机构包括：多个图像传感器和对应于相关联的图像传感器照射的多个活动光源，包括：利用图像传感器以采样周期捕获图像帧，以允许每个 用于捕获明亮图像的图像传感器，其中所述采样周期包括多个工作模式，并且在每个所述工作模式中，所述图像传感器中的至少一个以采样间隔捕获所述亮度图像; 在去噪采样间隔内同时使用所有图像传感器捕获暗图像; 并且计算由每个图像传感器捕获的亮图像和暗图像之间的差分图像。
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公开(公告)号：US09207809B2
公开(公告)日：2015-12-08
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
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：US11294171B2
公开(公告)日：2022-04-05
申请号：US16840477
申请日：2020-04-06
Applicant: PixArt Imaging Inc.
Inventor： Ren-Hau Gu , Chih-Hsin Lin
IPC: G02B27/00 , A61B5/00 , A61B5/024 , A61B5/1455
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：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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Patent Agency Ranking
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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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：US09582118B2
公开(公告)日：2017-02-28
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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19.发明申请IMAGE BRIGHTNESS ADJUSTING METHOD, OBJECT TRACKING METHOD AND OBJECT TRACKING APPARATUS 有权图像亮度调整方法，对象跟踪方法和对象跟踪设备公开(公告)号：US20150170344A1
公开(公告)日：2015-06-18
申请号：US14300192
申请日：2014-06-09
Applicant: PixArt Imaging Inc.
Inventor： Yu-Chia Lin , Yu-Hsiang Huang , Chih-Hsin Lin
CPC classification number: G06T5/007 , G01S5/16 , G06F3/0418 , G06F3/042 , H04N5/23216 , H04N5/2351 , H04N5/243
Abstract: An image brightness information adjusting method, which comprises: computing background brightness information of an image; computing a first brightness information difference between brightness information for at least one pixel of a first image line of the image and background brightness information corresponding to the first image line; and adjusting brightness information for at least one pixel of a second image line according to the first brightness information difference.
Abstract translation: 一种图像亮度信息调整方法，包括：计算图像的背景亮度信息; 计算图像的第一图像行的至少一个像素的亮度信息与对应于第一图像行的背景亮度信息之间的第一亮度信息差; 以及根据第一亮度信息差调整第二图像行的至少一个像素的亮度信息。
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公开(公告)号：US08629856B2
公开(公告)日：2014-01-14
申请号：US13865275
申请日：2013-04-18
Applicant: PixArt Imaging Inc.
Inventor： Cheng-Nan Tsai , Tzung-Min Su , Chih-Hsin Lin
IPC: G06F3/042
CPC classification number: G06F3/042 , G06F3/0416 , G06F3/0428 , G06F2203/04104 , G06F2203/04108
Abstract: An apparatus and a method for acquiring object image of a pointer are provided. The apparatus is suitable for an optical touch system and is used for acquiring an object image of a pointer when the pointer interacts with a touch surface of the optical touch system. The apparatus includes an image sensor and a processing circuit. The image sensor is used for acquiring an image of the touch surface. When the pointer approaches the touch surface, the processing circuit compares at least a part of the information of a sensed image with a threshold value, so as to determine a comparison range. Then, the processing circuit determines another threshold value according to the image information in the comparison range. Afterwards, the processing circuit compares the image information in the comparison range with the aforementioned another threshold value, so as to acquire an object image of the pointer.
Abstract translation: 提供了一种用于获取指针的对象图像的装置和方法。 该装置适用于光学触摸系统，并且当指针与光学触摸系统的触摸面相互作用时用于获取指针的对象图像。 该装置包括图像传感器和处理电路。 图像传感器用于获取触摸表面的图像。 当指示器接近触摸表面时，处理电路将感测图像的信息的至少一部分与阈值进行比较，以便确定比较范围。 然后，处理电路根据比较范围内的图像信息来确定另一阈值。 之后，处理电路将比较范围内的图像信息与上述另一个阈值进行比较，以获取指针的对象图像。
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