Method and apparatus for controlling an LED based light system
First Claim
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1. A control system for a Light Emitting Diode (LED) based light system, comprising:
- a plurality of feedback units for generating feedback signals representative of luminance and chrominance characteristics; and
a controller in signal communication with said plurality of feedback units configured to provide drive signals to light source assemblies during respective non-overlapping intervals and to adjust said drive signals in response to feedback signals from said plurality of feedback units.
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Abstract
A technique for controlling a Light Emitting Diode (LED) based light system involves driving individual light sources that make up the LED-based light system at non-overlapping intervals so that light source-specific feedback signals can be generated in response to the emitted light. The light source-specific feedback signals are then used to individually adjust the light sources to achieve desired luminance and chrominance characteristics of the emitted light.
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Citations
20 Claims
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1. A control system for a Light Emitting Diode (LED) based light system, comprising:
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a plurality of feedback units for generating feedback signals representative of luminance and chrominance characteristics; and
a controller in signal communication with said plurality of feedback units configured to provide drive signals to light source assemblies during respective non-overlapping intervals and to adjust said drive signals in response to feedback signals from said plurality of feedback units. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for controlling a Light Emitting Diode (LED) light system, comprising:
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providing drive signals to light sources during respective non-overlapping intervals;
receiving light source-specific feedback signals in response to said providing drive signals to light sources during respective non-overlapping intervals; and
adjusting said drive signals in response to the light source-specific feedback signals. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A Light Emitting Diode (LED) based light system, comprising:
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a plurality of light source assemblies;
a plurality of feedback units, each of the feedback units being in optical communication with at least one of the light source assemblies; and
a controller in signal communication with the light source assemblies and the feedback units and configured to;
provide drive signals to the light source assemblies at non-overlapping intervals;
receive light source-specific feedback signals from the feedback units in response to the drive signals that are provided at non-overlapping intervals; and
adjust the drive signals provided to the light source assemblies in response to the light source-specific feedback signals. - View Dependent Claims (17, 18, 19, 20)
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Specification