Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2007-06-20
2008-10-28
Tran, Thuy Vinh (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S299000, C315S308000, C315S362000, C345S102000
Reexamination Certificate
active
07443111
ABSTRACT:
A liquid crystal display backlight inverter including a first error amplifying unit receiving and comparing a first detection voltage corresponding to a current flowing through a lamp with a first preset reference voltage and outputting a first error voltage corresponding to an error therebetween; a second error amplifying unit receiving and comparing a second detection voltage corresponding to a voltage applied to the lamp with a second preset reference voltage and outputting a second error voltage corresponding to an error therebetween; a feedback selector selecting one of the outputs of the first and second error amplifying unit according to an error between the second detection voltage and a third preset reference voltage; and a lamp control pulse generator generating a pulse signal having a duty controlled according to one of the first error voltage and second error voltage.
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Gong Jung Chul
Jang Yu Jin
Min Byoung Own
Shin Sang Cheol
McDermott Will & Emery LLP
Samsung Electro-Mechanics Co. Ltd.
Tran Thuy Vinh
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