Automatic Compensation For Degradation Of Optocoupler Light Emitting Diode
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United States of America Patent
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Issued Date -
May 6, 2010
app pub date -
Oct 7, 2009
filing date -
Nov 4, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system and method for compensating for degradation of a light emitting diode includes accumulating time that the light emitting has been lit. An additional amount of drive current to be provided to the light emitting diode is determined based on the accumulated time that the light emitting diode has been lit. The system includes a controller that accumulates the time that the light emitting diode has been lit and determines the amount of addition drive current to be provided to the light emitting diode.
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