Light pen system for pixel-based displays

Details Light pen system for pixel-based displays Light pen system for pixel-based displays

2003-11-07

2008-09-02

Bella, Matthew C (Department: 2624)

Image analysis

Applications

3-d or stereo imaging analysis

Reexamination Certificate

active

07421111

ABSTRACT:
An interactive display system includes a pixel-based display surface and a light pen. A sequence of patterns is projected onto the display surface. The sequence of patterns has a unique sequence of light intensities for each location of the display surface. Intensities of light at an arbitrary location are sensed by the light pen while projecting the sequence of patterns. The intensifies of light are decoded to determine coordinates of the arbitrary location.

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