公开(公告)号：US20100328200A1

公开(公告)日：2010-12-30

申请号：US12822187

申请日：2010-06-24

申请人： Chi-Chang Yu ,  Chih-Yang Tzeng ,  Homer H. Chen ,  Meng-Chun Lin ,  I-Hau Yeh ,  Hong-Cheng Chen

发明人： Chi-Chang Yu ,  Chih-Yang Tzeng ,  Homer H. Chen ,  Meng-Chun Lin ,  I-Hau Yeh ,  Hong-Cheng Chen

IPC分类号： G06F3/033

CPC分类号： G06F3/0386

摘要： A device for converting display screen into touch panel screen includes a projection screen; an image projection unit for projecting an image on the projection screen; a light pointer for emitting a light spot signal of a specific wavelength on the projection screen; an image detecting unit, which includes a fisheye lens for receiving the image on the projection screen to generate a fisheye distorted image; and an optical filter for filtering out the optical energy except the light spot signal of the specific wavelength; an image processing unit, coupled to the image detecting unit, for calculating a first position of the light spot on the projection screen according to the fisheye distorted image; and a message transmitting unit, coupled to the image processing unit, for outputting a touch panel signal according to the calculating result of the image processing unit.

摘要翻译： 用于将显示屏转换成触摸面板屏幕的装置包括投影屏幕; 图像投影单元，用于在投影屏幕上投影图像; 用于在投影屏幕上发射特定波长的光点信号的光指示器; 图像检测单元，其包括用于在投影屏幕上接收图像以产生鱼眼失真图像的鱼眼镜头; 以及用于滤除特定波长的光点信号以外的光能的滤光器; 图像处理单元，耦合到图像检测单元，用于根据鱼眼失真图像计算投影屏幕上的光点的第一位置; 以及消息发送单元，耦合到所述图像处理单元，用于根据所述图像处理单元的计算结果输出触摸面板信号。