公开(公告)号：US20070236454A1

公开(公告)日：2007-10-11

申请号：US11762198

申请日：2007-06-13

申请人： CHI MAN UNG ,  David Booth ,  Stephen Worthington ,  Mark Fletcher ,  Roberto Sirotich

发明人： CHI MAN UNG ,  David Booth ,  Stephen Worthington ,  Mark Fletcher ,  Roberto Sirotich

IPC分类号： G06F3/041

CPC分类号： G06F3/0421

摘要： An apparatus for detecting a pointer within a region of interest includes a first reflective element extending along a first side of the region of interest and reflecting light towards the region of interest. A second reflective element extends along a second side of the region of interest and reflects light towards the region of interest. The second side is joined to the first side to define a first corner. A non-reflective region generally in the plane of at least one of the first and second reflective elements is adjacent the first corner. At least one imaging device captures images of the region of interest including reflections from the first and second reflective elements.

摘要翻译： 用于检测感兴趣区域内的指针的装置包括沿着感兴趣区域的第一侧延伸并朝向感兴趣区域反射光的第一反射元件。 第二反射元件沿着感兴趣区域的第二侧延伸并且朝向感兴趣区域反射光。 第二侧连接到第一侧以限定第一角。 通常在第一和第二反射元件中的至少一个的平面中的非反射区域与第一拐角相邻。 至少一个成像装置捕获感兴趣区域的图像，包括来自第一和第二反射元件的反射。