OPTICAL POSITION DETECTING DEVICE, DISPLAY DEVICE WITH POSITION DETECTING FUNCTION, AND ELECTRONIC APPARATUS
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United States of America Patent
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Issued Date -
Sep 9, 2010
app pub date -
Mar 2, 2010
filing date -
Mar 4, 2009
priority date (Note) -
Abandoned
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Abstract
An optical position detecting device for optically detecting a position of a target object within a detection region, includes: a position detecting light source which emits position detecting light; a position detecting light source driving circuit which drives the position detecting light source; a light detector of which a light receiving portion faces the detection region; and a signal processing unit which creates an environment light intensity determining signal corresponding to intensity of environment light within the detection region and a position detecting signal for detecting the position of the target object within the detection region on the basis of a detecting signal of the light detector.
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