公开(公告)号：US20100085330A1

公开(公告)日：2010-04-08

申请号：US12569166

申请日：2009-09-29

Applicant: John David NEWTON

Inventor： John David NEWTON

IPC: G06F3/042

CPC classification number: G06F3/0428 ,  G06F3/0425

Abstract: A coordinate detection system can comprise a display screen, a touch surface corresponding the top of the display screen or a material positioned above the screen and defining a touch area, at least one camera outside the touch area and configured to capture an image of space above the touch surface, an illumination system comprising a light source, the illumination system configured to project light from the light source through the touch surface, and a processor executing program code to identify whether an object interferes with the light from the light source projected through the touch surface based on the image captured by the at least one camera. Light can be directed upward by sources positioned behind the screen, by sources positioned behind the screen that direct light into a backlight assembly that directs the light upward, and/or by a forward optical assembly in front of the screen that directs the light upward.

Abstract translation: 坐标检测系统可以包括显示屏幕，对应于显示屏幕的顶部的触摸表面或位于屏幕上方并定义触摸区域的材料，触摸区域外的至少一个照相机，并且被配置为捕获上方的空间图像 所述触摸表面，包括光源的照明系统，所述照明系统被配置为投射来自所述光源的光通过所述触摸表面;以及处理器，执行程序代码，以识别对象是否干扰来自通过所述光源投射的光源的光 基于由所述至少一个照相机拍摄的图像的触摸表面。 通过位于屏幕后面的光源可以向上引导光线向上引导位于屏幕后方的光源，该光源将光线引导到将光线向上引导的背光组件和/或通过将光线向上引导的前方光学组件。