Optical sensor calibration
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United States of America Patent
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Nov 24, 2009
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app pub date -
Oct 23, 2007
filing date -
Oct 23, 2007
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Abstract
An apparatus including: an optical sensor comprising an optical transmitter and an optical receiver; and a calibration system configured to change calibration of the sensor when a measurement taken at the optical receiver, while the optical transmitter is on and the apparatus is in use, passes a test.
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