STOCHASTIC DYNAMIC ATMOSPHERE

• US 20110057582A1
• Filed: 05/08/2009
• Published: 03/10/2011
• Est. Priority Date: 05/13/2008
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Overbeek, Therese Jacoba Maria, Kater, Bram, Clout, Ramon Antoine Wiro, Sekulovski, Dragan
• Granted Patent: US 8,788,098 B2
• Time in Patent Office: Days
• US Class Current: 315/312
• CPC Class Codes: G06F 18/23 Clustering techniques
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/105 in response to determined parameters
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources

Abstract

The invention concerns a lighting device for creating dynamic atmospheres, the lighting device comprising: a light source adapted to operate in a plurality of color states, the light source emitting differing colors for each color state; a controller for controlling the color state of the light source; the controller comprising a random generator to provide a transition between a previous and a subsequent state, wherein the controller is adapted to provide the transition based on probabilistic output provided by the random generator implementing a stochastic model, the probabilistic output depending on the previous color state. In addition, a method is provided for generating the stochastic model; and a method for creating dynamic atmospheres based on probabilistic output provided by the stochastic model.

Claims

1. A lighting device for creating dynamic atmospheres, said lighting device comprising:

a light source adapted to operate in a plurality of color states, the light source emitting differing colors for each color state;

a controller for controlling the color state of the light source, the controller comprising a random generator implementing a stochastic model to provide a transition between a previous and a subsequent color state;

wherein

the controller is adapted to provide the transition based on probabilistic output provided by the random generator, the probabilistic output depending on the previous color state.

2. A lighting device according to claim 1, wherein the transition regards a temporal and/or spatial color transition between previous and subsequent color states.

3. A lighting device according to claim 1, further comprising a transition dynamics presetting circuit, for defining a transition dynamic between a previous and a subsequent color state.

4. A lighting device according to claim 1 further comprising a terminal for exchanging stochastic model parameters;

transition dynamic parameters and/or color state parameters.

5. A lighting device according to claim 1, further comprising multimedial output devices operable in response to a color state transition.

6. A system comprising a geometric arrangement of a plurality of coupled lighting devices according to claim 1.

7. A lighting device according to claim 1, further comprising:

multimedial output devices driven by multimedial sources,

a clustering circuit for clustering the multimedial output according to a predefined aspect;

a computational circuit for computing a statistic on subsequent transitions between the clusters;

a processing circuit for generating probability parameters associated with the computed statistic; and

an output circuit for outputting the probability parameters to the random generator so as to implement the stochastic model.

8. A device for generating a stochastic model for a lighting device according to claim 1, comprising:

an input for receiving multimedial input,

a clustering circuit for clustering the multimedial input according to a predefined aspect;

a computational circuit for computing a statistic on subsequent transitions between the clusters;

a processing circuit for generating probability parameters associated with the computed statistic; and

an output circuit for outputting the probability parameters so as to implement the stochastic model.

9. A method for creating dynamic atmospheres, the method comprising:

operating a multimedial source in a plurality of states, each state associated with a perceptually differing atmosphere; and

providing a transition between a previous and subsequent state, based on probabilistic output provided by a stochastic model, the probabilistic output depending on the previous state.

10. The method according to claim 9, wherein the multimedial source is a light source, and wherein the state is a color state.

11. A method for generating a stochastic model, comprising:

receiving multimedial input,

clustering the multimedial input according to a predefined aspect;

computing a statistic on subsequent transitions between the clusters; and

generating probability parameters associated with the computed statistic so as to implement the stochastic model.

12. The method according to claim 11, wherein the parameters of the stochastic model are extracted from a temporal color distribution of a video source sequence.

13. The method according to claim 11, wherein the parameters of the stochastic model are extracted from a spatial color distribution of an image.