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US 8,427,721 B2Granted
Device and method for dynamically changing color
AssigneeKoninklijke Philips Electronics N.V.
InventorsLucius Theodorus Vinkenvleugel, Johannes Petrus Wilhelmus Baaijens
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Abstract
A lighting system (900) has a light source (920) configured to provide a light, and a controller (930) configured to control hue and saturation of the light to change a color of the light from an initial color to a final color during at least two phases.
Claims11
A lighting system, comprising:
- a light source configured to provide a light;
- a user interface for receiving a user input related to a desired final color of the light;
- and
- a controller for controlling at least hue and saturation of the light to change a color of the light along a predetermined path in at least two phases from an initial color going through an intermediate color having reduced saturation relative to the initial color to the final color,
- wherein,
- during a first phase, the controller is adapted to reduce the saturation to reach the level of the intermediate color while maintaining the hue at an initial value, and
- during at least a second phase, the controller is adapted to modify the hue from the initial value to a final value and maintain saturation at the intermediate color to set to the level of provided light to the final color.
4 more elements
A method of controlling a light source, comprising;
- producing a light from the light source;
- receiving a user input related to a final color;
- and
- controlling hue and saturation of the light to change a color of the light automatically along a predetermined path from an initial color going through an intermediate color having reduced saturation relative to the initial color to a final color during at least two phases,
- wherein,
- during a first phase, the saturation is reduced from the initial level to reach and intermediate level to reach the level of the intermediate color while maintaining the hue at an initial value, and
- in a second phase, maintaining the saturation at the intermediate level and change the hue from the initial value to a final value to set to the light output level at the final color.
4 more elements
Dependencies are inferred from the claim text.