Pointing device utilizing a photodetector array
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United States of America Patent
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May 25, 1999
Issued Date -
N/A
app pub date -
Jun 19, 1997
filing date -
Oct 5, 1992
priority date (Note) -
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Abstract
An optical detection system particularly suited to us as a pointing device uses a photodetector array capable of generating a quasi-sinusoidal signal in response to illumination with an image of appropriate size. The detection system can use either coherent or non-coherent light, and existing textures in standard materials such as paper or printed patterns.
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Cited Art Landscape
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