Dimming control method and lighting system with dimming control

Details Dimming control method and lighting system with dimming control Dimming control method and lighting system with dimming control

2007-04-24

2007-04-24

Chen, Shih-Chao (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Reexamination Certificate

active

10992022

ABSTRACT:
A dimming control method and a lighting system having dimming control, in which the lighting system (200) includes an input unit (210), a light-emission unit (260) and a current control circuit (220). The dimming control method is characterized by outputting a continuous current with a varying amplitude to the light-emission unit under a higher brightness, and clamping the amplitude of the current output to the light-emission unit to a fixed value and outputting a discontinuous current with a fixed amplitude and a varying duty cycle to the light-emission unit under a lower brightness.

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patent: 2005/0156534 (2005-07-01), Oh

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