High efficacy lighting signal converter and associated methods
First Claim
1. A signal adapting chromaticity system to control a lighting device comprising:
- a signal conversion engine that receives a source signal designating a color of light defined by a two spatial plus luminance dimensional color space and converts the source signal to a three dimensional color space defined within a subset gamut of a full color gamut;
wherein the signal conversion engine performs a conversion operation to convert the source signal to an output signal, and uses the output signal to drive light emitting diodes (LEDs); and
wherein the subset gamut includes a first color light, a second color light and a high efficacy light; and
wherein the high efficacy light is defined by a color temperature between 2000K and 100000K;
wherein the conversion operation converts the source signal to the output signal by performing a matrix conversion operation;
wherein matrices are defined for the two spatial plus luminance dimensional color space included in the source signal;
wherein the matrices are inverted to define inverse matrices that are processed to define a scalar including scalar values that are positive and included in the output signal; and
wherein the output signal defines the color of the light in the three dimensional color space defined within the subset gamut.
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Abstract
A signal adapting chromacity system to control that may include a signal conversion engine to receive a source signal designating a color of light defined by a two spatial plus luminance dimensional color space, such as the xxY color space. The signal conversion engine may convert the source signal to a three dimensional color space defined within a subset gamut of a full color gamut, such as an RGW, RBW, or GBW color space. The subset gamut may include a first color light, a second color light and a high efficacy light. The signal conversion engine may perform a conversion operation to convert the source signal to an output signal, using the output signal to drive light emitting diodes (LEDs). The conversion operation may be a matrix, angular or linear conversion operation.
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Citations
30 Claims
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1. A signal adapting chromaticity system to control a lighting device comprising:
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a signal conversion engine that receives a source signal designating a color of light defined by a two spatial plus luminance dimensional color space and converts the source signal to a three dimensional color space defined within a subset gamut of a full color gamut; wherein the signal conversion engine performs a conversion operation to convert the source signal to an output signal, and uses the output signal to drive light emitting diodes (LEDs); and wherein the subset gamut includes a first color light, a second color light and a high efficacy light; and wherein the high efficacy light is defined by a color temperature between 2000K and 100000K; wherein the conversion operation converts the source signal to the output signal by performing a matrix conversion operation; wherein matrices are defined for the two spatial plus luminance dimensional color space included in the source signal; wherein the matrices are inverted to define inverse matrices that are processed to define a scalar including scalar values that are positive and included in the output signal; and wherein the output signal defines the color of the light in the three dimensional color space defined within the subset gamut. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for controlling a lighting device comprising:
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receiving a source signal designating a color of light defined by a two spatial plus luminance dimensional color space; converting the source signal to an output signal defined by a three dimensional color space defined within a subset gamut of a full color gamut by performing a conversion operation, the subset gamut including a first color light, a second color light and a high efficacy light; using the output signal to drive light emitting diodes (LEDs); performing a matrix conversion operation to convert the source signal to the output signal wherein performing the matrix conversion operation further includes defining matrices for the two spatial plus luminance dimensional color space included in the source signal; preconditioning the matrices that are defined as non-square matrices; inverting the matrices to define inverse matrices; processing the inverse matrices to define a scalar including scalar values that are positive and included in the output signal; and defining the color of the light in the three dimensional color space defined within the subset gamut in the output signal. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification