Systems and methods to control light-emitting diodes

Details Systems and methods to control light-emitting diodes Systems and methods to control light-emitting diodes

2007-03-13

2007-03-13

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

With signal, indicator, or alarm

C340S815450, C713S340000

Reexamination Certificate

active

10921492

ABSTRACT:
According to some embodiments, systems and methods may be employed for receiving a power consumption signal. An on-state of a light-emitting diode may be defined. A duty cycle of the light-emitting diode may be determined based at least in part on the power consumption signal. The duty cycle may reduce a power consumed by the light-emitting diode. The determination of the duty cycle may, for example, include varying at least one of an on time or an off time, for the on-state, of the light-emitting diode.

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William Hadden, [Edited by Bill Travis], “White-LED driver provides 64-step logarithmic dimming”, Jun. 14, 2004, Reed Electronics Group, EDN.com. Retrieved from Internet: URL: >http://www.reed-electronics.com/ednmag/article/CA421508?text=white%2Dled>. 3pgs.

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