Method and apparatus for controlling a variable-colour light source
First Claim
1. A control device for controlling a variable-colour light source, the variable-colour light source comprising a plurality of individually controllable colour light sources;
- where the control device is responsive to an input signal, which input signal is indicative of a colour and a brightness, where the control device comprises a control unit for generating, respective activation signals for each of the individually controllable colour light sources;
which control unit comprises predetermined calibration data indicative of at least one calibration colour vector in a predetermined colour space and at least one brightness response mapping for each of the individually controllable colour light sources, wherein the control unit is configured to generate the activation signals from the input signal in relation to the predetermined calibration data;
wherein the control device is configuredto obtain an input colour vector indicative of the received colour and brightness;
to determine at least one component of the input colour vector along at least one of the calibration colour vectors; and
to apply a corresponding one of the brightness response mapping resulting in a corresponding one of the activation signals.
4 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is a control device for controlling a variable-color light source, the variable-color light source comprising a plurality of individually controllable color light sources. The control device comprises a control unit for generating, responsive to an input signal indicative of a color and a brightness, respective activation signals for each of the individually controllable color light sources. The control unit is configured to generate the activation signals from the input signal and from predetermined calibration data indicative of at least one set of color values for each of the individually controllable light sources.
31 Citations
10 Claims
-
1. A control device for controlling a variable-colour light source, the variable-colour light source comprising a plurality of individually controllable colour light sources;
- where the control device is responsive to an input signal, which input signal is indicative of a colour and a brightness, where the control device comprises a control unit for generating, respective activation signals for each of the individually controllable colour light sources;
which control unit comprises predetermined calibration data indicative of at least one calibration colour vector in a predetermined colour space and at least one brightness response mapping for each of the individually controllable colour light sources, wherein the control unit is configured to generate the activation signals from the input signal in relation to the predetermined calibration data;wherein the control device is configured to obtain an input colour vector indicative of the received colour and brightness; to determine at least one component of the input colour vector along at least one of the calibration colour vectors; and to apply a corresponding one of the brightness response mapping resulting in a corresponding one of the activation signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- where the control device is responsive to an input signal, which input signal is indicative of a colour and a brightness, where the control device comprises a control unit for generating, respective activation signals for each of the individually controllable colour light sources;
-
9. A method of controlling a variable-colour light source, the variable-colour light source comprising a plurality of individually controllable colour light sources;
- the method comprising;
storing predetermined calibration data indicative of at least one set of colour values for each of the individually controllable light sources, receiving an input signal indicative of a colour and a brightness; and generating, responsive to the received input signal, respective activation signals for each of the individually controllable colour light sources; wherein generating includes generating the activation signals from the input signal and from the predetermined calibration data by; obtaining an input colour vector indicative of the received colour and brightness; determining at least one component of the input colour vector along at least one of the calibration colour vectors; and applying a corresponding one of the brightness response mapping resulting in a corresponding one of the activation signals.
- the method comprising;
-
10. A method of calibrating a variable-colour light source, the variable-colour light source comprising a plurality of individually controllable colour light sources, the method comprising:
-
providing a calibration input signal indicative of a colour and a brightness to the variable-colour light source; receiving a colorimetric measurement signal indicative of a set of measured colour values emitted by the variable-colour light source in response to the input signal, determining calibration data from the calibration input signal and the received calorimetric measurement; storing at least one set of colour values for each of the individually controllable light sources, said set of colour values being storing indicative of said calibration data; receiving an input signal indicative of a colour and a brightness; and generating, responsive to the received input signal, respective activation signals for each of the individually controllable colour light sources; wherein generating includes generating the activation signals from the input signal and from the predetermined calibration data by; obtaining an input colour vector indicative of the received colour and brightness; determining at least one component of the input colour vector along at least one of the calibration colour vectors; and applying a corresponding one of the brightness response mapping resulting in a corresponding one of the activation signals.
-
Specification