Light sensor
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United States of America Patent
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May 18, 2004
Issued Date -
N/A
app pub date -
Dec 23, 2002
filing date -
Jan 25, 1999
priority date (Note) -
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Abstract
Light sensors having a wide dynamic range are used in a variety of applications. A wide dynamic range light sensor includes an exposed photodiode light transducer accumulating charge in proportion to light incident over an integration period. Sensor logic determines a light integration period prior to the beginning of integration and the charge is reset. Charge accumulated by the exposed light transducer over the light integration period is measured and a pulse having a width based on the accumulated charge is determined.
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