公开(公告)号：US09841846B2

公开(公告)日：2017-12-12

申请号：US14991062

申请日：2016-01-08

Applicant: PixArt Imaging Inc.

Inventor： Ming-Tsan Kao ,  Tzung-Min Su ,  Chih-Hsin Lin

IPC: G06F3/041 ,  G06F3/042

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.

公开(公告)号：US09335525B2

公开(公告)日：2016-05-10

申请号：US14040201

申请日：2013-09-27

Applicant: PIXART IMAGING INC.

Inventor： Yu-Hsiang Huang ,  Chun-Yi Lu ,  Tzung-Min Su ,  Chih-Hsin Lin ,  Jia-Hong Huang

IPC: G06F3/042 ,  G02B13/18 ,  G02B19/00

CPC classification number: G02B13/18 ,  G02B19/0014 ,  G02B19/0061 ,  G06F3/0428

Abstract: An optical lens is configured in front of an image-capturing lens of an image-capturing device. A light-emitting unit of the image-capturing device emits a light beam. The optical lens includes a pair of peripheral compensation portions and a central diverging portion. Each peripheral compensation portion has a first convex surface and a first concave surface arranged opposite to the first convex surface. The central diverging portion is arranged between the peripheral compensation portions, and has a second concave surface and an oppositely arranged light incident surface. The second concave surface is arranged between the first convex surfaces. The light incident surface is arranged between the first concave surfaces. The optical axis of the light beam sequentially aligns with the light incident surface and the second concave surface. The light rays of the light beam pass through the first concave surface and the first convex surface in sequence.

Abstract translation: 光学透镜配置在图像拍摄装置的图像拍摄透镜的前方。 图像捕获装置的发光单元发射光束。 光学透镜包括一对外围补偿部分和中心发散部分。 每个外围补偿部分具有与第一凸面相对布置的第一凸面和第一凹面。 中心发散部分配置在周边补偿部之间，具有第二凹面和相对配置的光入射面。 第二凹面设置在第一凸面之间。 光入射面设置在第一凹面之间。 光束的光轴顺序地与光入射面和第二凹面对准。 光束的光线依次穿过第一凹面和第一凸面。

公开(公告)号：US20140184571A1

公开(公告)日：2014-07-03

申请号：US14195824

申请日：2014-03-03

Applicant: PixArt Imaging Inc.

Inventor： Tzung-Min Su ,  Yi-Hsien Ko ,  Hsin-Chi Cheng ,  Ming-Tsan Kao

IPC: G06F3/042

CPC classification number: G06F3/0428 ,  G06F3/0421

Abstract: A locating method applied to an optical touch device is disclosed. The optical touch device includes at least one image detecting component for detecting an imaging position of an object and generating a touch position of the object on a plane according to the imaging position. The at least one image detecting component includes a plurality of pixels. The locating method includes dividing the pixels into a first group and a second group along a first direction, analyzing dimension ratios of a darkness point respectively relative to the first group and the second group when the darkness point formed by the object is simultaneously detected by the first group and the second group, and calculating the imaging position of the darkness point inside the image detecting component according to the dimension ratios.

Abstract translation: 公开了一种应用于光学触摸装置的定位方法。 光学触摸装置包括至少一个图像检测部件，用于检测物体的成像位置，并根据成像位置在平面上产生物体的触摸位置。 所述至少一个图像检测部件包括多个像素。 定位方法包括沿着第一方向将像素分成第一组和第二组，当由对象形成的暗点同时检测时，分析相对于第一组和第二组的暗点的尺寸比例 第一组和第二组，并且根据尺寸比计算图像检测部件内的暗点的成像位置。

公开(公告)号：US20220179450A1

公开(公告)日：2022-06-09

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

IPC: G06F1/16 ,  G06F3/041 ,  G06F3/044

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.

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

IPC: G06F21/32 ,  H04W12/00 ,  G06F1/16

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.

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

IPC: G06F21/32 ,  H04W12/00 ,  G06F1/16

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.

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。

公开(公告)号：US08867791B2

公开(公告)日：2014-10-21

申请号：US14181055

申请日：2014-02-14

Applicant: Pixart Imaging Inc.

Inventor： Hsin-Chia Chen ,  Tzung-Min Su

IPC: G06K9/00 ,  G06F3/01

CPC classification number: G06F3/017 ,  G06F3/0416 ,  G06F3/042 ,  G06F3/04883

Abstract: A gesture recognition method for an interactive system includes the steps of: capturing image windows with an image sensor; obtaining information of object images associated with at least one pointer in the image windows; calculating a position coordinate of the pointer relative to the interactive system according to the position of the object images in the image windows when a single pointer is identified according to the information of object images; and performing gesture recognition according to a relation between the object images in the image window when a plurality of pointers are identified according to the information of object images. The present invention further provides an interactive system.

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。

公开(公告)号：US09389731B2

公开(公告)日：2016-07-12

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。