Electric lamp and discharge devices: systems – With automatic shunt and/or cutout – Supply circuit current and/or potential actuated switch
Reexamination Certificate
2007-07-03
2007-07-03
Philogene, Haissa (Department: 2821)
Electric lamp and discharge devices: systems
With automatic shunt and/or cutout
Supply circuit current and/or potential actuated switch
C315S122000, C315S291000, C315S247000, C315SDIG002, C349S043000, C349S044000
Reexamination Certificate
active
11011752
ABSTRACT:
An efficient and flexible current-mode driver delivers power to one or more light sources in a backlight system. In one application, the current-mode driver is configured as an inverter with an input current regulator, a non-resonant polarity-switching network, and a closely-coupled output transformer. The input current regulator can output a regulated current source in a variety of programmable wave shapes. The current-mode driver may further include a rectifier circuit and a second polarity-switching network between the closely-coupled output transformer and a lamp load. In another application, the current-mode driver delivers power to a plurality of light sources in substantially one polarity by providing a regulated current to a network of time-sharing semiconductor switches coupled in series with different light sources coupled across each semiconductor switch.
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Knobbe Martens Olson & Bear LLP
Microsemi Corporation
Philogene Haissa
LandOfFree
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