公开(公告)号：US09766753B2

公开(公告)日：2017-09-19

申请号：US13841385

申请日：2013-03-15

Applicant: PIXART IMAGING INC.

Inventor： Tzung Min Su ,  Ming Tsan Kao ,  Chun-Sheng Lin ,  Chih Hsin Lin ,  Yi Hsien Ko

IPC: G06F3/042 ,  G06F3/041

CPC classification number: G06F3/042 ,  G06F3/0416 ,  G06F3/0428 ,  G06F2203/04104

Abstract: The present invention discloses embodiments for an optical touch systems and methods. One embodiment of the present invention is directed to an optical touch system that includes at least two image sensors configured to detect a plurality of objects over a touch surface to generate a plurality of object images; a plurality of first light receiving elements, wherein the first light receiving elements are arranged on a side of the touch surface along a first direction and are configured to detect the objects; and a processing unit configured to calculate a plurality of candidate coordinate data, based on the object images, and select the coordinate data that represents coordinate data of the objects from the candidate coordinate data, based on detection data of the first light receiving elements.

公开(公告)号：US20140176964A1

公开(公告)日：2014-06-26

申请号：US14011312

申请日：2013-08-27

Applicant: Pixart Imaging Inc.

Inventor： Tzung Min Su ,  Yu Chia Lin ,  Kuan Hsun Wang ,  Chuan-Ching Lin ,  Chih Hsin Lin

IPC: G01B11/00

CPC classification number: G01B11/002 ,  G06F3/0421

Abstract: An optical touch system comprises a first light-emitting unit, a second light-emitting unit, a first image sensor having a first filter, and a second image sensor having a second filter. The first light-emitting unit generates first wavelength band light. The second light-emitting unit generates second wavelength band light. The first light-emitting unit generates first wavelength band light when the first image sensor is capturing an image. The first filter allows first wavelength band light to enter into the first image sensor and blocks second wavelength band light. The second light-emitting unit generates second wavelength band light when the second image sensor is capturing an image. The second filter allows second wavelength band light to enter into the second image sensor and block first wavelength band light.

Abstract translation: 光学触摸系统包括第一发光单元，第二发光单元，具有第一滤光器的第一图像传感器和具有第二滤光器的第二图像传感器。 第一发光单元产生第一波长带光。 第二发光单元产生第二波长带光。 当第一图像传感器正在拍摄图像时，第一发光单元产生第一波长带光。 第一滤光器允许第一波长带光进入第一图像传感器并阻挡第二波长带光。 当第二图像传感器正在拍摄图像时，第二发光单元产生第二波长带光。 第二滤光器允许第二波长带光进入第二图像传感器并阻挡第一波长带光。

公开(公告)号：US20140035879A1

公开(公告)日：2014-02-06

申请号：US13841385

申请日：2013-03-15

Applicant: PIXART IMAGING INC.

Inventor： Tzung Min Su ,  Ming Tsan Kao ,  Chun-Sheng Lin ,  Chih Hsin Lin ,  Yi Hsien Ko

IPC: G06F3/042

CPC classification number: G06F3/042 ,  G06F3/0416 ,  G06F3/0428 ,  G06F2203/04104

Abstract: The present invention discloses embodiments for an optical touch systems and methods. One embodiment of the present invention is directed to an optical touch system that includes at least two image sensors configured to detect a plurality of objects over a touch surface to generate a plurality of object images; a plurality of first light receiving elements, wherein the first light receiving elements are arranged on a side of the touch surface along a first direction and are configured to detect the objects; and a processing unit configured to calculate a plurality of candidate coordinate data, based on the object images, and select the coordinate data that represents coordinate data of the objects from the candidate coordinate data, based on detection data of the first light receiving elements.

Abstract translation: 本发明公开了用于光学触摸系统和方法的实施例。 本发明的一个实施例涉及一种光学触摸系统，其包括被配置为在触摸表面上检测多个对象以产生多个对象图像的至少两个图像传感器; 多个第一光接收元件，其中所述第一光接收元件沿着第一方向布置在所述触摸表面的一侧上，并且被配置为检测所述物体; 以及处理单元，被配置为基于对象图像计算多个候选坐标数据，并且基于第一光接收元件的检测数据从候选坐标数据中选择表示对象的坐标数据的坐标数据。

公开(公告)号：US09454257B2

公开(公告)日：2016-09-27

申请号：US13782681

申请日：2013-03-01

Applicant: PIXART IMAGING INC.

Inventor： Chun Yi Lu ,  Tzung Min Su ,  Yuan Yu Peng ,  Yi Hsien Ko

IPC: G06F3/041 ,  G06F3/02 ,  G06F3/042 ,  G06F3/0488

CPC classification number: G06F3/0416 ,  G06F3/0227 ,  G06F3/042 ,  G06F3/04883 ,  G06F3/04886 ,  G06F2203/04803 ,  G06F2203/04808

Abstract: An electronic system includes a device having a screen and an optical touch device. The optical touch device monitors the activity of an object on the screen of the device. When the object performs an operation in a first region of the screen, the optical touch device generates first data; and when the object performs an operation outside the first region, the optical touch device generates second data, wherein the first data and the second data are of different data types.

Abstract translation: 电子系统包括具有屏幕和光学触摸装置的装置。 光学触摸设备监视设备屏幕上的对象的活动。 当对象在屏幕的第一区域中执行操作时，光学触摸设备产生第一数据; 并且当所述对象在所述第一区域之外执行操作时，所述光学触摸设备产生第二数据，其中所述第一数据和所述第二数据具有不同的数据类型。

公开(公告)号：US09013449B2

公开(公告)日：2015-04-21

申请号：US13656632

申请日：2012-10-19

Applicant: Pixart Imaging Inc.

Inventor： Tzung Min Su ,  Chih Hsin Lin

IPC: G06F3/042

CPC classification number: G06F3/042

Abstract: An optical touch system comprises a first imaging device configured to be directed toward a side surface of a target on a touch surface and a processing device. The first imaging device sequentially generates a first picture having an image of the target and a second picture having an image of the target. The computing device is configured to calculate a first dimension of the target using the first picture and a second dimension of the target using the second picture, and to determine whether the target is formed by one object or two objects by the first and second dimensions.

Abstract translation: 光学触摸系统包括：第一成像装置，被配置为指向触摸表面上的目标物的侧表面;以及处理装置。 第一成像装置顺序地生成具有目标图像的第一图像和具有目标图像的第二图像。 计算设备被配置为使用第一图像和目标的第二维度使用第二图像来计算目标的第一维度，并且通过第一和第二维度来确定目标是由一个对象还是两个对象形成。

公开(公告)号：US10282036B2

公开(公告)日：2019-05-07

申请号：US15346082

申请日：2016-11-08

Applicant: PIXART IMAGING INC.

Inventor： Tzung Min Su ,  Ren Hau Gu ,  Chih Hsin Lin ,  Cheng Nan Tsai

IPC: G06F3/00 ,  G06F3/042 ,  G06F3/041

Abstract: An image processing method includes obtaining a background picture including a first and second pixel, wherein the first pixel has a first intensity value in response to that a first sensing element is operated by a fixed exposure time, and the second pixel has a second intensity value in response to that a second image sensing element is operated by the fixed exposure time; extracting the first and second intensity value from the first and second pixel, respectively; performing a computing operation including computing a first exposure time and a second exposure time; and operating the first image sensing element by the first exposure time and the second image sensing element by the second exposure time after the computing operation.