Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Reexamination Certificate
2008-01-28
2010-11-30
Owens, Douglas W (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
C315S246000, C315S312000
Reexamination Certificate
active
07843151
ABSTRACT:
An exemplary backlight control circuit (200) includes at least one load circuit (210), a pulse width modulation integrated circuit (250), and a micro controller (260). The micro controller includes an output terminal and a plurality of analog to digital input terminals. The output terminal outputs a high level signal when the analog to digital input terminals all receive high level signals, and the output terminal outputs a low level signal when any one of the analog to digital input terminals receives a low level signal. The micro controller feeds operating states of the at least one load circuit back to the pulse width modulation integrated circuit.
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Kao Yi-Hsiang
Wang Hong-Ren
Chimei Innolux Corporation
Chung Wei Te
Innocom Technology (Shenzhen) Co., Ltd.
Le Tung X
Owens Douglas W
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