Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2005-08-11
2009-02-17
Owens, Douglas W (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S307000, C315S308000, C315S312000
Reexamination Certificate
active
07492108
ABSTRACT:
System and method for improving efficiency in driving LEDs. A preferred embodiment comprises a switch current regulator coupled to a current control signal input, the switch current regulator to control an amount of current provided to the LED based upon a magnitude of a voltage on the current control signal input, a switching voltage regulator coupled to the switch current regulator and the LED, the switching voltage regulator to provide current to the LED, and a sensor coupled to the switch current regulator, the LED, and a signal feedback circuit, the sensor to measure status information regarding the switch current regulator and the LED and provides the information to a controller, wherein the status information can be used to adjust the current on the current control signal input.
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Garcia Getzel Gonzalez
Marshall Stephen Wesley
Penn Steven Monroe
Alemu Ephrem
Brady III W. James
Owens Douglas W
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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