Dimmable Solid State Lighting System, Apparatus and Method, with Distributed Control and Intelligent Remote Control
First Claim
1. A distributed solid-state lighting system comprising:
- a central power source coupleable to an AC input power source, the central power source comprising;
an AC/DC rectifier coupled to a DC/DC converter to convert AC input power to a first DC voltage level;
a central user interface to receive user input for a selected brightness level; and
a central controller coupled to the DC/DC converter, the central controller to provide a first control signal to the DC/DC converter in response to the user input to provide a second DC voltage level corresponding to the selected brightness level; and
one or more terminal lighting apparatuses coupled to and spaced apart from the central power source, each terminal lighting apparatus comprising;
a plurality of light emitting diodes;
a current source or regulator coupled to the plurality of light emitting diodes; and
a terminal controller coupled to the current source or regulator and, in response to the second DC voltage level, to provide a second control signal to the current source or regulator to provide a selected current level of the plurality of light emitting diodes corresponding to the selected brightness level.
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Accused Products
Abstract
Exemplary systems, methods and apparatuses for a distributed solid-state lighting system are disclosed. An exemplary system comprises a central power source, and one or more terminal lighting apparatuses. An exemplary central power source comprises: an AC/DC rectifier coupled to a DC/DC converter to convert an AC input power to a first DC voltage level; a central user interface to receive user input for a selected brightness level; and a central controller to provide a first control signal to the DC/DC converter to provide a second DC voltage level corresponding to the selected brightness level. A terminal lighting apparatus may comprise: a plurality of LEDs; a current (or power) source or regulator; and a terminal controller which, in response to the second DC voltage level, provides a second control signal to the current source or regulator to provide a selected current level of the LEDs corresponding to the selected brightness level.
34 Citations
25 Claims
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1. A distributed solid-state lighting system comprising:
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a central power source coupleable to an AC input power source, the central power source comprising; an AC/DC rectifier coupled to a DC/DC converter to convert AC input power to a first DC voltage level; a central user interface to receive user input for a selected brightness level; and a central controller coupled to the DC/DC converter, the central controller to provide a first control signal to the DC/DC converter in response to the user input to provide a second DC voltage level corresponding to the selected brightness level; and one or more terminal lighting apparatuses coupled to and spaced apart from the central power source, each terminal lighting apparatus comprising; a plurality of light emitting diodes; a current source or regulator coupled to the plurality of light emitting diodes; and a terminal controller coupled to the current source or regulator and, in response to the second DC voltage level, to provide a second control signal to the current source or regulator to provide a selected current level of the plurality of light emitting diodes corresponding to the selected brightness level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of providing power to a spatially-distributed plurality of terminal lighting apparatuses each comprising a plurality of light emitting diodes, the method comprising:
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receiving a selected brightness level through a user interface; using a central controller, determining a dimming level “
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;using a central controller, determining an output voltage or output current level; rectifying an input AC voltage (current) and providing corresponding DC output voltage and current levels; and monitoring output voltage or output current levels and providing a first feedback signal to maintain the output voltage or output current level at the determined level. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method of dimming a brightness level of a terminal lighting apparatus comprising a plurality of light emitting diodes, the method comprising:
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receiving an input voltage at the terminal lighting apparatus; using a terminal controller and using the received input voltage level, calculating or determining an LED current level Iout; setting the LED current level to the value of Iout; and monitoring the LED current level and providing a feedback signal to maintain the LED current level at the determined level Iout. - View Dependent Claims (20, 21, 22, 23)
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24. A kit for a distributed solid-state lighting system, the kit comprising:
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a central power source comprising; an AC/DC rectifier coupled to a DC/DC converter to convert an AC input power to a first DC voltage level; a central user interface to receive user input for a selected brightness level; and a central controller coupled to the DC/DC converter, the central controller to provide a first control signal to the DC/DC converter in response to the user input to provide a second DC voltage level corresponding to the selected brightness level; and one or more terminal lighting apparatuses, each terminal lighting apparatus comprising; a plurality of light emitting diodes; a current source or regulator coupled to the plurality of light emitting diodes; and a terminal controller coupled to the current source or regulator and, in response to the second DC voltage level, to provide a second control signal to the current source or regulator to provide a selected current level of the plurality of light emitting diodes corresponding to the selected brightness level. - View Dependent Claims (25)
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Specification