Systems and methods for providing power and data to lighting devices
First Claim
1. A control device to control illumination intensity of a lighting device configured to be powered from a first sinusoidal AC signal, the control device communicating with a controller configured to address a system of lights over a two-wire communication network using a second sinusoidal AC signal with data encoded power waveforms that comprise command and address data including illumination intensity data, said lighting device not in communication with said two-wire communication network, said control device comprising:
- a switching circuit configured to receive said first sinusoidal AC signal;
a detection circuit configured to receive said first sinusoidal AC signal and to sense phase information of said first sinusoidal AC signal; and
a processor in communication with said two-wire communication network, the processor configured to determine control data responsive to said command and address data and illumination intensity data of said data encoded power waveforms, to receive said phase information, and to generate a trigger signal responsive to said phase information and said control data, said trigger signal comprising a delay time based at least in part on said illumination intensity data, said switching circuit further configured to receive said trigger signal and to generate a third sinusoidal AC signal by conducting said first sinusoidal AC signal responsive to said trigger signal to said lighting device, said trigger signal inhibiting said conduction of said first sinusoidal AC signal to said lighting device during said delay time, wherein a voltage of said third sinusoidal AC signal is less than a voltage of said first sinusoidal AC signal when said delay time is non-zero;
wherein the control device is configured to be powered by said first sinusoidal AC signal, to receive said data encoded power waveforms from said second sinusoidal AC signal, and to modify said first sinusoidal AC signal to produce said third sinusoidal AC signal that is configured to power said lighting device and to control said illumination intensity of said lighting device, wherein said third sinusoidal AC signal is different from said second sinusoidal AC signal.
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Accused Products
Abstract
Systems and methods are provided for lighting systems, including high output lighting systems for various environments. The lighting systems include a lighting controller for driving lighting modules and transmitting a data signal to the lighting modules. The data signal varies between logical states. The lighting controller provides a low loss rectified power signal. The lighting controller further provides data within the power signal by forming a positive polarity rectified power waveform corresponding to data in a first state and a negative polarity rectified waveform signal corresponding to data in a second state using substantially loss-less circuitry.
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Citations
25 Claims
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1. A control device to control illumination intensity of a lighting device configured to be powered from a first sinusoidal AC signal, the control device communicating with a controller configured to address a system of lights over a two-wire communication network using a second sinusoidal AC signal with data encoded power waveforms that comprise command and address data including illumination intensity data, said lighting device not in communication with said two-wire communication network, said control device comprising:
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a switching circuit configured to receive said first sinusoidal AC signal; a detection circuit configured to receive said first sinusoidal AC signal and to sense phase information of said first sinusoidal AC signal; and a processor in communication with said two-wire communication network, the processor configured to determine control data responsive to said command and address data and illumination intensity data of said data encoded power waveforms, to receive said phase information, and to generate a trigger signal responsive to said phase information and said control data, said trigger signal comprising a delay time based at least in part on said illumination intensity data, said switching circuit further configured to receive said trigger signal and to generate a third sinusoidal AC signal by conducting said first sinusoidal AC signal responsive to said trigger signal to said lighting device, said trigger signal inhibiting said conduction of said first sinusoidal AC signal to said lighting device during said delay time, wherein a voltage of said third sinusoidal AC signal is less than a voltage of said first sinusoidal AC signal when said delay time is non-zero; wherein the control device is configured to be powered by said first sinusoidal AC signal, to receive said data encoded power waveforms from said second sinusoidal AC signal, and to modify said first sinusoidal AC signal to produce said third sinusoidal AC signal that is configured to power said lighting device and to control said illumination intensity of said lighting device, wherein said third sinusoidal AC signal is different from said second sinusoidal AC signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method to control illumination intensity of a lighting device configured to be powered from a first sinusoidal AC signal, said method comprising:
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receiving a first sinusoidal AC signal; sensing phase information of said first sinusoidal AC signal; receiving over a two-wire communication network a second sinusoidal AC signal comprising a data encoded power waveform configured to address a system of lights, said received data encoded power waveform including command and address data that includes illumination intensity data, said lighting device not in communication with said two-wire communication network; determining control data responsive to said command and address data of said received data encoded power waveform; generating a trigger signal responsive to said phase information, said trigger signal comprising a delay time based at least in part on said illumination intensity data; and generating a third sinusoidal AC signal by conducting said first sinusoidal AC signal responsive to said trigger signal to said lighting device, said trigger signal inhibiting said conduction of said first sinusoidal AC signal to said lighting device during said delay time, wherein a voltage of said third sinusoidal AC signal is less than a voltage of said first sinusoidal AC signal when said delay time is non-zero; wherein said third sinusoidal AC signal is configured to power said lighting device and to control said illumination intensity of said lighting device based at least in part on said data encoded waveform of said second sinusoidal AC waveform, wherein said third sinusoidal AC signal is different from said second sinusoidal AC signal. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method of controlling a lighting device configured to be powered from a first sinusoidal AC signal, said method comprising:
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receiving a data encoded power waveform formed by rectifying a second sinusoidal AC signal to form a rectified power signal, and encoding command and address data that includes illumination intensity data to form said data encoded power waveform by outputting said rectified power signal with a higher polarity when a control signal is in a first state and outputting said rectified power signal with a lower polarity when said control signal is in a second state, said control signal based at least in part on a phase of said second sinusoidal AC signal and said command and address data, wherein said second sinusoidal AC signal is different from said first sinusoidal AC signal; extracting said illumination intensity data from said data encoded power waveform; receiving and sensing phase information of said first sinusoidal AC signal; generating a switch enable signal including a delay for each zero crossing of said first sinusoidal AC signal, said switch enable signal responsive to said phase information of said first sinusoidal AC signal, and said delay responsive to said extracted illumination intensity data; triggering a switch with said switch enable signal to conduct said first sinusoidal AC signal through said switch to generate a third sinusoidal AC signal, said switch enable signal inhibiting said conduction of said first sinusoidal AC signal during said delay, wherein a voltage of said third sinusoidal AC signal is less that a voltage of said first sinusoidal AC signal when said delay is non-zero, said third sinusoidal AC signal comprises said first sinusoidal AC signal responsive to said delay; and conducting said third sinusoidal AC signal to said lighting device to power said lighting device and to control an illumination intensity of said lighting device, wherein said third AC signal is different from said data encoded power waveform. - View Dependent Claims (24, 25)
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Specification