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US 2010/0302207 A1Published application
Optical Touch Control Method and Apparatus Thereof
OwnerLan-Rong Dunginventor
Life of this patent
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Abstract
An optical touch control method and apparatus are disclosed. The touch control method is used to provide a shadow from an object in accordance with a light source, and to determine the touch time and the touch location of the object in the display according to a width variance of the shadow. By utilizing the touch control method, the optical touch control apparatus can be implemented in large sized displays without substantial increases in cost.
Claims20
An optical touch control method, comprising:
- providing a shadow of an object by a first light source;
- and
- determining a touch location and a touch time of said object in a display.
An optical touch control method, comprising:
- providing a first light source in a display;
- generating a shadow of an object in said display when said object is moved close to said display;
- determining a width variance of said shadow by a detector;
- and
- determining a touch time of said object by said detector, when the width of said shadow is close to or equal to zero.
2 more elements
An optical touch control apparatus, comprising:
- a first light source;
- and
- a detector, said detector being configured to determine a touch location and a touch time of an object according to a width variance of a shadow generated by said first light source.
Dependencies are inferred from the claim text.