Circuits and methods for powering light source with balanced...

Electric lamp and discharge devices: systems – Current and/or voltage regulation – Plural load device regulation

Reexamination Certificate

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Details

C315S307000, C315S294000, C315S295000, C315S301000, C315S312000, C315S128000, C315S082000

Reexamination Certificate

active

08084960

ABSTRACT:
A light source driving circuit for powering multiple light sources in a vehicle includes multiple current limiters and a balance controller. The current limiters are coupled to the light sources for adjusting currents of the light sources respectively. The balance controller coupled to the current limiters can control the current limiters such that a current flowing through each of the light sources is substantially the same as a first target current. Moreover, the balance controller can control the current limiters in response to a brake of the vehicle such that a current flowing through each of the light sources is substantially the same as a second target current.

REFERENCES:
patent: 7906913 (2011-03-01), Bouchard
patent: 7969097 (2011-06-01), Van De Ven
patent: 7994725 (2011-08-01), Bouchard
patent: 2010/0164403 (2010-07-01), Liu
patent: 101146387 (2008-03-01), None
patent: 201119073 (2008-09-01), None
patent: 101521971 (2009-09-01), None
patent: 201341255 (2009-11-01), None

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