Electro-optical sensor
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United States of America Patent
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Nov 17, 2009
Grant Date -
N/A
app pub date -
Aug 12, 2003
filing date -
Aug 13, 2002
priority date (Note) -
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Abstract
Methods and systems are provided that extend the functionality of electro-optical sensors. A device has a multiple light sources, a light detector, and a processor configured to operate the light sources and the light detector to perform distinct functions. At least one of the distinct functions includes a biometric identification function in which light is propagated from the plurality of light sources through presented material. The propagated light is received with the light detector, with the presented material being identified from the received light. Another of the distinct functions includes a nonidentification function performed with the light sources and the light detector.
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