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Dimmer decoder with adjustable filter for use with led drivers

  • US 20110084623A1
  • Filed: 10/14/2010
  • Published: 04/14/2011
  • Est. Priority Date: 10/14/2009
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a sense signal comprised of multiple pulses, the sense signal based on an output of a dimmer;

    for each of multiple sampling periods;

    identifying at least one pulse duty cycle for at least one pulse in the sense signal during that sampling period; and

    generating an output value identifying a duty cycle for driving one or more light emitting diodes (LEDs), the output value based on the at least one pulse duty cycle;

    filtering the output values using a filter; and

    adjusting the filter based on a rate at which the output of the dimmer changes.

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