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    • 2. 发明授权
    • Using a light pointer for input on an interactive display surface
    • 在交互式显示表面上使用光指示器进行输入
    • US07499027B2
    • 2009-03-03
    • US11117979
    • 2005-04-29
    • Robert Allan Brigham, IIDavid Joshua KurlanderNigel S. KeamAndrew D. Wilson
    • Robert Allan Brigham, IIDavid Joshua KurlanderNigel S. KeamAndrew D. Wilson
    • G06F3/033
    • G06F3/03542G06F3/0425
    • A light pointer is selectively activated to direct a light beam onto an interactive display surface, forming a pattern of light that is detected by a light sensor disposed within an interactive display table. The waveband of the light produced by the light pointer is selected to correspond to a waveband to which the light sensor responds, enabling the light sensor to detect the position of the pattern on the interactive display surface, as well as characteristics that enable the location and orientation of the light pointer to be determined. Specifically, the shape and size of the pattern, and the intensity of light forming the pattern are detected by the light sensor and are processed to determine the orientation of the light pointer and its distance from the interactive display surface. The pattern may comprise various shapes, such as circles, arrows, and crosshairs.
    • 选择性地激活光指示器以将光束引导到交互式显示表面上,形成由布置在交互式显示表内的光传感器检测到的光图案。 由光指示器产生的光的波段被选择为对应于光传感器响应的波段,使得光传感器能够检测交互式显示表面上的图案的位置,以及使得能够定位和 要确定光指针的方位。 具体地,通过光传感器检测图案的形状和尺寸以及形成图案的光的强度,并且被处理以确定光指示器的取向及其与交互式显示表面的距离。 图案可以包括各种形状,例如圆形,箭头和十字准线。