Method and apparatus for driving light emitting diode
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United States of America Patent
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Sep 22, 2015
Grant Date -
Jun 19, 2014
app pub date -
May 21, 2013
filing date -
Dec 13, 2012
priority date (Note) -
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Abstract
An LED driving method is provided. The method includes the steps of: receiving a brightness control signal, wherein the brightness control signal represents a duty cycle of an LED within a pulse width modulation cycle, and the duty cycle is indicated by a plurality of illuminating clocks; dividing the PWM cycle into a plurality of sub-PWM cycles; and equally distributing the illuminating clocks to each of the sub-PWM cycles.
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