Electric lamp and discharge devices: systems – Current and/or voltage regulation – Plural load device regulation
Reexamination Certificate
2008-10-29
2011-10-25
Ismail, Shawki S (Department: 2819)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Plural load device regulation
C315S307000, C315S324000
Reexamination Certificate
active
08044610
ABSTRACT:
A method is provided for driving a plurality of light emitters in a plurality of output paths with each output path including at least one light emitter. The method includes the steps of applying a supply voltage level to a plurality of output paths; generating a current for each path during a period of a predetermined length for the output path; sensing a current level for each output path during the period; comparing each sensed current level with a reference level; increasing the supply voltage level if the sensed current level is lower than the reference level; determining a lowest supply voltage level for the worst case output path; and using the lower supply voltage level as a common supply voltage level for all output paths.
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Deutsche Patent und Markemant, Office Action issued regarding German Patent Application DE 10 2007 051 793.0 dated Oct. 30, 2007.
Kiml Helmut
Rommel Martin
Sandner Harald
Schmeller Hans
Vaucourt Christophe
Brady III Wade J.
Ismail Shawki S
Patti John J.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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