Dimming control system for solid state illumination source
First Claim
1. A system for dimming a light emitting diode (LED) illumination source, said system comprising:
- an analog filter operative to extract a direct current (DC) voltage value from an incoming alternating current (AC) waveform,a microprocessor structured to digitally filter the DC voltage resulting from said analog filter and extract dimming data associated with a dimming operation for the LED,said microprocessor including monitoring capabilities operative to detect predetermined characteristics of said dimming data,said predetermined characteristics determinative of manual control of said dimming operation, and,said predetermined characteristics including at least speed of a voltage change associated with said dimming operation.
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Accused Products
Abstract
A system for dimming a solid state illumination source, such as a light emitting diode, including a low pass analog filter operative to extract a direct current (DC) voltage component from an incoming alternating current (AC) waveform. A microprocessor is structured to digitally filter the DC voltage resulting from the analog filter and extract dimming data associated with a dimming operation of the LED. The microprocessor includes monitoring capabilities operative to detect predetermined characteristics of the dimming data associated with the dimming operation. The predetermined characteristics are determinative of manual control of the dimming operation or non-manual activation of a dimming signal. The predetermined characteristics which are determinative of manual control may include, but not be limited to, speed of voltage change, direction of voltage change and amount of voltage change associated with the dimming signal delivered to the LED.
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Citations
18 Claims
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1. A system for dimming a light emitting diode (LED) illumination source, said system comprising:
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an analog filter operative to extract a direct current (DC) voltage value from an incoming alternating current (AC) waveform, a microprocessor structured to digitally filter the DC voltage resulting from said analog filter and extract dimming data associated with a dimming operation for the LED, said microprocessor including monitoring capabilities operative to detect predetermined characteristics of said dimming data, said predetermined characteristics determinative of manual control of said dimming operation, and, said predetermined characteristics including at least speed of a voltage change associated with said dimming operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for dimming a solid state illumination source retrofitted into an original illumination source comprising incandescent lighting, said system comprising:
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an analog filter operative to extract a direct current (DC) voltage value from an incoming alternating current (AC) waveform, a microprocessor structured to digitally filter the DC voltage resulting from said analog filter and extract dimming data associated with a dimming operation for the LED, said microprocessor structured to direct an intensity control signal to the solid state illumination source being operative to adjust light intensity thereof, said microprocessor including monitoring capabilities operative to detect predetermined characteristics of said dimming data determinative of manual control of said dimming operation, said predetermined characteristics being outside respective operative ranges indicative of non-manual control of said dimming operation, and wherein generation of said intensity control signal is dependent on a determination of said dimming operation being manually controlled. - View Dependent Claims (13, 14, 15)
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16. A system for dimming a light emitting diode (LED) illumination source, said system comprising:
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an analog filter operative to extract a direct current (DC) voltage value from an incoming alternating current (AC) waveform, a microprocessor structured to digitally filter the DC voltage resulting from said analog filter and extract dimming data associated with a dimming operation for the LED, said microprocessor including monitoring capabilities operative to detect predetermined characteristics of said dimming data, said predetermined characteristics determinative of manual control of said dimming operation, and, said predetermined characteristics including at least direction of a voltage change associated with said dimming operation. - View Dependent Claims (17)
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18. A system for dimming a light emitting diode (LED) illumination source, said system comprising:
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an analog filter operative to extract a direct current (DC) voltage value from an incoming alternating current (AC) waveform, a microprocessor structured to digitally filter the DC voltage resulting from said analog filter and extract dimming data associated with a dimming operation for the LED, said microprocessor including monitoring capabilities operative to detect predetermined characteristics of said dimming data, said predetermined characteristics determinative of manual control of said dimming operation, and, said predetermined characteristics including at least an amount of a voltage change associated with said dimming operation.
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Specification