IMAGE SENSOR CONTROL OVER A VARIABLE FUNCTION OR OPERATION
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United States of America Patent
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Issued Date -
Dec 29, 2011
app pub date -
Jun 24, 2010
filing date -
Jun 24, 2010
priority date (Note) -
Abandoned
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Abstract
A device has a variable function or operation. An image sensor system is provided for the device. The image sensor system is responsive to light rays indicative of whether an object is present on an imaging window. For example, the image sensor system may be of the frustrated total internal reflection type, the light rays detected by the image sensor system comprising reflected light from the window at locations where the object is not present. The image sensor system outputs image information indicative of the detection of the light rays. A processing circuit processes the image information to detect the presence of the object on the imaging window. A control signal is generated by the processing circuit in response to that detected presence, the control signal causing the variable function or operation of the device to vary in response to the detected presence and/or movement of the object.
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