Lighting controller for lighting device for vehicle

Details Lighting controller for lighting device for vehicle Lighting controller for lighting device for vehicle

2008-04-01

2008-04-01

Vo, Tuyet (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

C315S291000, C315S309000, C315S224000, C315S312000

Reexamination Certificate

active

11593375

ABSTRACT:
A lighting controller for a lighting device for a vehicle includes a semiconductor light source; a power source for supplying electric power; and control circuitry for controlling a supply of a current to the semiconductor light source. The control circuitry selectively supplies the current to the semiconductor light source through a resistance element or through a bypass circuit for bypassing the resistance element based on a determination of a state of the current. A method for controlling a lighting device for a vehicle includes receiving electric power from a power source; supplying a current to a semiconductor light source; determining a state of the current supplied to the semiconductor light source; and selectively supplying the current to the semiconductor light source through a resistance element or through a bypass circuit for bypassing the resistance element based on the determination of the state of the current.

REFERENCES:
patent: 6784622 (2004-08-01), Newman et al.
patent: 2004-51014 (2004-02-01), None

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