OPTICAL TOUCH SCREEN USING A MIRROR IMAGE FOR DETERMINING THREE-DIMENSIONAL POSITION INFORMATION
First Claim
Patent Images
1. A touch screen system comprising:
- a reflective display surface;
a camera mounted so as to capture an image of (i) said reflective display surface, (ii) a pointer approaching said reflective display surface, and (iii) a reflection of the pointer on said reflective display surface; and
a processor coupled with said camera that determines a three-dimensional location of the pointer relative to said reflective display surface, based on the positions of the pointer and the reflection of the pointer in the image captured by said camera.
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Abstract
A touch screen system including a reflective display surface, a camera mounted so as to capture an image of (i) the reflective display surface, (ii) a pointer approaching the reflective display surface, and (iii) a reflection of the pointer on the reflective display surface, and a processor coupled with the camera that determines a three-dimensional location of the pointer relative to the reflective display surface, based on the positions of the pointer and the reflection of the pointer in the image captured by the camera.
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Citations
4 Claims
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1. A touch screen system comprising:
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a reflective display surface; a camera mounted so as to capture an image of (i) said reflective display surface, (ii) a pointer approaching said reflective display surface, and (iii) a reflection of the pointer on said reflective display surface; and a processor coupled with said camera that determines a three-dimensional location of the pointer relative to said reflective display surface, based on the positions of the pointer and the reflection of the pointer in the image captured by said camera. - View Dependent Claims (2, 3, 4)
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Specification