Arrangement for driving LED lighting sources
First Claim
1. A driving arrangement for driving a lighting source comprising a plurality of light emitting diodes, the driving arrangement comprising:
- a first power supply line (Vcc) and a set of signal lines for carrying information for said plurality of light emitting diodes, the driving arrangement further including;
a second power supply line (GND) to provide jointly with said first power supply line (Vcc) a two-wire power supply, anda switching block to generate switching signals to provide driving information for said plurality of light emitting diodes via said set of signal lineswherein the driving arrangement is configured to drive an active lighting source in such a way that power is supplied to the active lighting source via the first and second power supply lines and driving information is provided on the signal lines,and wherein the driving arrangement is further configured to drive a passive lighting source in such a way that switching signals to drive the light emitting diodes of the passive lighting source are supplied via the first power line and the signal lines and that the second power supply line is not used to drive the passive lighting source.
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Accused Products
Abstract
A driving arrangement for a plurality of light emitting diodes (LEDs), comprising a first power supply line (Vcc), a second power supply line (GND) and a set of signal lines (1a, 1b, 1c) for carrying brightness intensity and or chromatic information for the plurality of light emitting diodes (54). In a first possible configuration of use, the first (Vcc) and second (GND) power supply line jointly supply power to an “active” lighting source and the light emitting diodes (54) are driven as a function of the brightness intensity information provided via the signal lines (1a, 1b, 1c). In a second possible configuration of use for driving a “passive” source, the second power supply line (GND) is not used and the brightness of the light emitting diodes (54) is controlled by switching signals applied via the first power supply line (Vcc) and the set of signal lines (1a, 1b, 1c).
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Citations
21 Claims
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1. A driving arrangement for driving a lighting source comprising a plurality of light emitting diodes, the driving arrangement comprising:
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a first power supply line (Vcc) and a set of signal lines for carrying information for said plurality of light emitting diodes, the driving arrangement further including; a second power supply line (GND) to provide jointly with said first power supply line (Vcc) a two-wire power supply, and a switching block to generate switching signals to provide driving information for said plurality of light emitting diodes via said set of signal lines wherein the driving arrangement is configured to drive an active lighting source in such a way that power is supplied to the active lighting source via the first and second power supply lines and driving information is provided on the signal lines, and wherein the driving arrangement is further configured to drive a passive lighting source in such a way that switching signals to drive the light emitting diodes of the passive lighting source are supplied via the first power line and the signal lines and that the second power supply line is not used to drive the passive lighting source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification