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公开(公告)号：US20220245837A1
公开(公告)日：2022-08-04
申请号：US17547269
申请日：2021-12-10
Applicant: PixArt Imaging Inc.
Inventor： Jeng-Yue Weng , Tzung-Min Su , Feng-Chi Liu
Abstract: Disclosed in a movement direction determination system comprising a first detection region, a second detection region and a processing circuit. The first detection region and the second detection region respectively comprises an optical sensor. The processing circuit determines a movement direction of an object according to the optical data generated by the first detection region and the second detection region. The present invention also discloses a movement direction determination system using a single detection region. The present invention also discloses an object volume computation system which can compute an object volume according to sensed optical data. The disclosed movement direction determination system can be used for various applications and the object volume computation system can assist product confirmation.
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公开(公告)号：US11294428B2
公开(公告)日：2022-04-05
申请号：US17233523
申请日：2021-04-18
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Tse-Chung Su , Ren-Hau Gu , Tzung-Min Su
Abstract: An electronic device which can detect a touch state, comprising: a front surface for showing images; at least one first electrode, provided in a first region; at least one second electrode, provided in a second region, wherein a distance between the first region and the front surface is larger than a distance between the second region and the front surface; a capacitance calculating circuit, configured to calculate at least one first capacitance generated by the first electrode and coupled to the second electrode to calculate at least one second capacitance generated by the second electrode, wherein the capacitance calculating circuit further calculates a capacitance difference between the first capacitance and the second capacitance; and a processing circuit, configured to determine the touch state according to the capacitance difference. Via such structure, the touch state of the electronic device can be precisely acquired.
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公开(公告)号：US20210240220A1
公开(公告)日：2021-08-05
申请号：US17233523
申请日：2021-04-18
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Tse-Chung Su , Ren-Hau Gu , Tzung-Min Su
Abstract: An electronic device which can detect a touch state, comprising: a front surface for showing images; at least one first electrode, provided in a first region; at least one second electrode, provided in a second region, wherein a distance between the first region and the front surface is larger than a distance between the second region and the front surface; a capacitance calculating circuit, configured to calculate at least one first capacitance generated by the first electrode and coupled to the second electrode to calculate at least one second capacitance generated by the second electrode, wherein the capacitance calculating circuit further calculates a capacitance difference between the first capacitance and the second capacitance; and a processing circuit, configured to determine the touch state according to the capacitance difference. Via such structure, the touch state of the electronic device can be precisely acquired.
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公开(公告)号：US12211219B2
公开(公告)日：2025-01-28
申请号：US17547269
申请日：2021-12-10
Applicant: PixArt Imaging Inc.
Inventor： Jeng-Yue Weng , Tzung-Min Su , Feng-Chi Liu
Abstract: Disclosed in a movement direction determination system comprising a first detection region, a second detection region and a processing circuit. The first detection region and the second detection region respectively comprises an optical sensor. The processing circuit determines a movement direction of an object according to the optical data generated by the first detection region and the second detection region. The present invention also discloses a movement direction determination system using a single detection region. The present invention also discloses an object volume computation system which can compute an object volume according to sensed optical data. The disclosed movement direction determination system can be used for various applications and the object volume computation system can assist product confirmation.
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公开(公告)号：US12014567B1
公开(公告)日：2024-06-18
申请号：US18318723
申请日：2023-05-17
Applicant: PIXART IMAGING INC.
Inventor： Yu-Ju Lee , Tzung-Min Su
CPC classification number: G06V40/13 , G06V40/1353 , H04N23/71 , H04N23/72 , H04N23/73 , H04N23/74 , H04N25/50 , G06V40/15
Abstract: There is provided a finger detection device including a light source, a light sensor and a processor. The light sensor respectively captures a first image frame and a second image frame corresponding to turning on and turning off the light source. The processor calculates a differential image frame of the first image frame and the second image frame, determines a covered region in the differential image frame and identifies whether the covered region is a finger region or not. If the covered region is not the finger region, the processor controls the light sensor to acquire new image frames. If the covered region is the finger region, the processor determines different windows of interest in the finger region.
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Patent Agency Ranking
公开(公告)号：US20210221648A1
公开(公告)日：2021-07-22
申请号：US17131795
申请日：2020-12-23
Applicant: PixArt Imaging Inc.
Inventor： Tsung-Fa Wang , Chiung-Wen Lin , Tzung-Min Su , Jeng-Yue Weng , Ting-Yang Chang , Chun-Sheng Lin
Abstract: In the present invention, an anti-pinch device which uses a simple optical mechanism to prevent the user being hurt by the moving part before the moving part touches the user is disclosed. Also, a space computing device which uses a simple optical mechanism to compute acquired space of a target object is disclosed. Additionally, a hovering control device which uses a simple optical mechanism thereby the user can control the hovering control device without touching the hovering control device is disclosed. The optical mechanism comprises at least one light source and at least one optical sensor, which can arrange in various ways.
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公开(公告)号：US11016535B1
公开(公告)日：2021-05-25
申请号：US16748746
申请日：2020-01-21
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Tse-Chung Su , Ren-Hau Gu , Tzung-Min Su
Abstract: A wearable electronic device which can detect a wearing state, comprising: at least one first electrode, provided in a first region of the wearable electronic device; at least one second electrode, provided in a second region of the wearable electronic device; a capacitance calculating circuit, configured to calculate first capacitances generated by the first electrode and configured to calculate second capacitances generated by the second electrode, wherein the capacitance calculating circuit further calculates a capacitance difference between the first capacitance and the second capacitance; and a processing circuit, configured to determine the wearing state according to the capacitance difference. Via such structure, a wearing state, a wearing location, a wearing angle of the electronic device can be automatically detected, thus the problem caused by an improper wearing manner can be improved.
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8.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：US11526195B2
公开(公告)日：2022-12-13
申请号：US17680243
申请日：2022-02-24
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Tse-Chung Su , Ren-Hau Gu , Tzung-Min Su
Abstract: An electronic device with a function of detecting a touch state, comprising: at least one first electrode, configured to generate a first capacitance reflecting a distance between the first electrode and an object; at least one second electrode, configured to generate a second capacitance reflecting a distance between the second electrode and the object, and wherein a first distance between the first electrode and the object is smaller than a second distance between the second electrode and the object when the electronic is in a wearing state; a capacitance calculating circuit, configured to calculate the first capacitance and the second capacitance; and a processing circuit, configured to determine if the electronic device is in the wearing state based on a capacitance difference between the first capacitance and the second capacitance. Via such structure, the touch state of the electronic device can be precisely acquired.
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