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。

公开(公告)号：US09354749B2

公开(公告)日：2016-05-31

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。

公开(公告)号：US09274650B2

公开(公告)日：2016-03-01

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。