Dimmable light emitting diode lighting system
First Claim
1. A light-emitting diode (“
- LED”
) lighting system comprising;
a dimmer having a preheat function and configured to generate a dimming signal;
a group of LEDs configured to be driven by an LED drive signal;
a dimming controller configured toreceive the dimming signal from the dimmer, andgenerate a first pulse-width modulated (“
PWM”
) signal based on the dimming signal, the first PWM signal having a first duty cycle;
a software controller in electrical communication with the dimming controller, the software controller configured toreceive the first PWM signal from the dimming controller, andcompensate the first PWM signal for the preheat function of the dimmer to generate a second PWM signal, the second PWM signal having a second duty cycle, the second duty cycle being different than the first duty cycle; and
an LED driver module configured toreceive the second PWM signal,generate the LED drive signal based on the second PWM signal, the LED drive signal associated with a drive level of the group of LEDs, andtransmit the LED drive signal to the group of LEDs.
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Accused Products
Abstract
An LED lighting system including a first group of LEDs, a second group of LEDs, and a controller. The first group of LEDs and the second group of LEDs are configured to be independently driven by a first LED drive signal and a second LED drive signal, respectively. The controller is configured receive a dimming signal from a dimmer having a preheat function. The controller is also configured to compensate the dimming signal for the preheat function of the dimmer to generate a compensated dimming signal, generate the first LED drive signal based on the compensated dimming, and generate the second LED drive signal based on the compensated dimming signal. The first LED drive signal is then transmitted the first group of LEDs and the second LED drive signal is transmitted to the second group of LEDs.
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Citations
20 Claims
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1. A light-emitting diode (“
- LED”
) lighting system comprising;a dimmer having a preheat function and configured to generate a dimming signal; a group of LEDs configured to be driven by an LED drive signal; a dimming controller configured to receive the dimming signal from the dimmer, and generate a first pulse-width modulated (“
PWM”
) signal based on the dimming signal, the first PWM signal having a first duty cycle;a software controller in electrical communication with the dimming controller, the software controller configured to receive the first PWM signal from the dimming controller, and compensate the first PWM signal for the preheat function of the dimmer to generate a second PWM signal, the second PWM signal having a second duty cycle, the second duty cycle being different than the first duty cycle; and an LED driver module configured to receive the second PWM signal, generate the LED drive signal based on the second PWM signal, the LED drive signal associated with a drive level of the group of LEDs, and transmit the LED drive signal to the group of LEDs. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- LED”
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8. A light-emitting diode (“
- LED”
) lighting system comprising;a group of LEDs configured to be driven by an LED drive signal; and a controller in electrical communication with the group of LEDs, the controller configured to receive a dimming signal associated with a dimmer, the dimmer having a preheat function, compensate the dimming signal for the preheat function of the dimmer to generate a compensated dimming signal, generate the LED drive signal based on the compensated dimming signal, the LED drive signal associated with a drive level of the group of LEDs, and transmit the LED drive signal to the group of LEDs. - View Dependent Claims (9, 10, 11, 12, 13)
- LED”
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14. A method of controlling dimming in a light-emitting diode (“
- LED”
) lighting system, the method comprising;receiving a dimming signal; generating a first pulse-width modulated (“
PWM”
) signal based on the dimming signal, the first PWM signal having a first duty cycle;compensating the first PWM signal for a preheat function of a dimmer to generate a second PWM signal, the second PWM signal having a second duty cycle, the second duty cycle being different than the first duty cycle; generating an LED drive signal based on the second PWM signal, the LED drive signal associated with a drive level of a group of LEDs; and transmitting the LED drive signal to the group of LEDs. - View Dependent Claims (15, 16, 17, 18, 19, 20)
- LED”
Specification