Methods, Apparatus and Articles of Manufacture to Calibrate Lighting Units
First Claim
1. A method for calibrating a color LED light unit comprising at least first-, second-, and third-color LEDs, comprising:
- a) defining a target color on a color map to calibrate that requires a contribution from at least the first- and second-color LEDs;
b) selecting first and second initial calibration coefficients associated with the first- and second-color contributing LEDs that contribute to the target color;
c) storing the initial or updated first and second calibration coefficients in a non-volatile memory of the light unit;
d) controlling the light unit to simultaneously drive the first and second LEDs to attempt to emit the target color, producing an attempted color, utilizing the calibration coefficients;
e) measuring the attempted color to determine if it matches the target color within a predefined tolerance;
f) if the attempted color matches the target color, then terminating the method;
g) if the attempted color does not match the target color, then performing the following;
h) selecting a color component corresponding to the first-color LED;
i) updating the first calibration coefficient associated with the selected color component;
j) performing (c)-(f) immediately again;
k) if the attempted color does not match the target color, then performing the following;
l) selecting a color component corresponding to the second-color LED;
m) updating the second calibration coefficient associated with the selected color component;
n) performing (c)-(f) again.
1 Assignment
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Accused Products
Abstract
A system and appertaining method calibrate a color LED light unit comprising at least first-, second-, and third-color LEDs, comprising: a) defining a target color on a color map to calibrate; b) selecting initial calibration coefficients associated with the target color; c) storing the initial or updated calibration coefficients in a non-volatile memory of the light unit; d) controlling the light unit to drive the LEDs to attempt to emit the target color, producing an attempted color, utilizing the calibration coefficients; e) measuring the attempted color to determine if it matches the target color within a predefined tolerance; f) if the attempted color matches the target color, then terminating the method; g) if the attempted color does not match the target color, then performing the following; h) selecting a color component; i) adapting at least one calibration coefficient associated with the selected color component; and j) performing (c)-(i) again.
24 Citations
16 Claims
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1. A method for calibrating a color LED light unit comprising at least first-, second-, and third-color LEDs, comprising:
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a) defining a target color on a color map to calibrate that requires a contribution from at least the first- and second-color LEDs; b) selecting first and second initial calibration coefficients associated with the first- and second-color contributing LEDs that contribute to the target color; c) storing the initial or updated first and second calibration coefficients in a non-volatile memory of the light unit; d) controlling the light unit to simultaneously drive the first and second LEDs to attempt to emit the target color, producing an attempted color, utilizing the calibration coefficients; e) measuring the attempted color to determine if it matches the target color within a predefined tolerance; f) if the attempted color matches the target color, then terminating the method; g) if the attempted color does not match the target color, then performing the following; h) selecting a color component corresponding to the first-color LED; i) updating the first calibration coefficient associated with the selected color component; j) performing (c)-(f) immediately again; k) if the attempted color does not match the target color, then performing the following; l) selecting a color component corresponding to the second-color LED; m) updating the second calibration coefficient associated with the selected color component; n) performing (c)-(f) again. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16)
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15. A system for calibrating a color LED light unit, wherein:
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the color LED light unit comprises; at least first-, second-, and third-color LEDs; and a non-volatile memory; and the system comprises; a) a target defining unit that defines a target color that requires a contribution from at least the first- and second-color LEDs on a color map to calibrate; b) an assigning unit that selects first and second initial calibration coefficients associated with the first- and second-color contributing LEDs that contribute to the target color and stores the initial or updated first and second calibration coefficients in the non-volatile memory; c) a controller that controls the light unit to simultaneously drive the first and second LEDs to attempt to emit the target color, producing an attempted color, utilizing the first and second calibration coefficients; d) a sensor that measures the attempted color to determine if it matches the target color within a predefined tolerance; and e) a selection and adaption unit that, along with the controller, is configured such that; f) if the attempted color matches the target color, then the system ceases performing calibration; g) if the attempted color does not match the target color, then a selection unit selects a color component corresponding to the first-color LED, and an adaption unit adapts and updates the first calibration coefficient associated with the selected color component; wherein immediately after (g); the controller controls the light unit to simultaneously drive the first and second LEDs to again attempt to emit the target color, producing a second attempted color, utilizing the first and second calibration coefficients; the sensor measures the second attempted color to determine if it matches the target color within a predefined tolerance; and the a selection and adaption unit, along with the controller is configured such that; if the second attempted color matches the target color, then the system ceases performing calibration; if the second attempted color does not match the target color, then the selection unit selects a color component corresponding to the second-color LED, and an adaption unit adapts and updates the second calibration coefficient associated with the selected color component; and the controller controls the light unit to simultaneously drive the first and second LEDs to again attempt to emit the target color, producing a third attempted color, utilizing the first and second calibration coefficients.
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Specification