Single driver for multiple light emitting diodes
First Claim
1. A LED driver circuit (70, 80), comprising:
- a power source (IS, VS) operable to provide power at a first frequency; and
a first switching LED cell (30-32, 40-42) including a first at least one LED (L11-LXY) operable to radiate a first color of light in response to a first LED current flowing through said first at least one LED (L11-LXY), wherein said first switching LED cell (30-32, 40-42) is operable to be switched between a first radiating mode and a first disabled mode at a second frequency, wherein, during the first radiating mode, said first switching LED cell (30-32, 40-42) controls a flow of the first LED current from said power source (IS, VS) through said first at least one LED (L11-LXY), and wherein, during the first disabled mode, said first switching LED cell (30-32, 40-42) impeded a flow of the first LED current from said power source (IS, VS) through said first at least one LED (L11-LXY).
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Accused Products
Abstract
A LED driver circuit (70, 80) employs a power source (IS, VS) for providing power at a power conversion frequency to a switching LED cell (30-32, 40-42). The switching LED cell (30-32, 40-42) switches between a radiating mode and a disabled mode at a LED driving frequency. In the radiating mode, the switching LED cell (30-32, 40-42) controls a flow of a LED current from the power source (IS, VS) through one or more LEDs (L11-LXY) to radiate a color of light from the LEDs (L11-LXY). In the disabled mode, the switching LED cell (30-32, 40-42) impedes the flow of the LED current from the power source (IS, VS) through the LEDs (L11-LXY).
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Citations
10 Claims
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1. A LED driver circuit (70, 80), comprising:
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a power source (IS, VS) operable to provide power at a first frequency; and
a first switching LED cell (30-32, 40-42) including a first at least one LED (L11-LXY) operable to radiate a first color of light in response to a first LED current flowing through said first at least one LED (L11-LXY), wherein said first switching LED cell (30-32, 40-42) is operable to be switched between a first radiating mode and a first disabled mode at a second frequency, wherein, during the first radiating mode, said first switching LED cell (30-32, 40-42) controls a flow of the first LED current from said power source (IS, VS) through said first at least one LED (L11-LXY), and wherein, during the first disabled mode, said first switching LED cell (30-32, 40-42) impeded a flow of the first LED current from said power source (IS, VS) through said first at least one LED (L11-LXY). - View Dependent Claims (2, 3, 4, 5, 6)
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7. A switching LED cell (30-32, 40-42), comprising:
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an input terminal (IN1-IN6);
an output terminal (OUT1-OUT6); and
at least one LED (L11-LXY) operable to radiate a first color of light in response to a LED current flowing through said at least one LED (L11-LXY); and
wherein said switching LED cell (30-32, 40-42) is operable to be switched between a radiating mode and a disabled mode at a LED driving frequency, wherein the radiating mode is for controlling a flow of the LED current from a power source (IS, VS) through said at least one LED (L11-LXY) whenever the power source (IS, VS) is applied between said input terminal (IN1-IN6) and said output terminal (OUT1-OUT6), and wherein the disabled mode is for impeding a flow of the LED current from the power source (IS, VS) through said second at least one LED (L11-LXY) whenever the power source (IS, VS) is applied between said input terminal (IN1-IN6) and said output terminal (OUT1-OUT6). - View Dependent Claims (8, 9, 10)
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Specification