User interface for controlling light emitting diodes

• US 20060290710A1
• Filed: 04/22/2004
• Published: 12/28/2006
• Est. Priority Date: 05/07/2003
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Zwanenburg, Michel J.
• Granted Patent: US 7,358,961 B2
• Time in Patent Office: Days
• US Class Current: 345/594
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: G06F 3/0481 based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
• CPC Class Codes: G06F 3/04847 Interaction techniques to control parameter settings, e.g. interaction with sliders or dials
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/18 via data-bus transmission
• CPC Class Codes: H05B 47/19 via wireless transmission

Abstract

A LED lighting system (100) employing a LED light source (115), a user interface (124, 128, 134, 138), and a controller (112). The LED light source (115) includes a plurality of colored LEDs emitting one of a plurality of spectral outputs as a function of one or more currents flowing through the colored LEDs, where each current has a variable time average flow. The user interface (124, 128, 134, 138) facilitate a user selection of one of the spectral outputs. The controller (112) controls the variable time average flow of each current flowing through the colored LEDs as a function of the spectral output selected by the user.

Claims

1. A LED lighting system (100), comprising:

a LED light source (115) including a plurality of colored LEDs operable to emit one of a plurality of spectral outputs as a function of at least one current flowing through said plurality of colored LEDs, each current of the at least one current having a variable time average flow;

a user interface (123, 124, 133, 134) operable to facilitate a first user selection of a first spectral output from the plurality of spectral outputs; and

a controller (112) in electrical communication with said user interface (123, 124, 133, 134) and said LED light source (115) to control the variable time average flow of each current flowing through said plurality of colored LEDs as a function of the user selection of the first spectral output.

2. The LED lighting system of claim 1, wherein said user interface (123, 124, 133, 134) includes:

a graphical user interface (123,133) operable to display a chromaticity diagram encompassing a plurality of color points, each color point corresponding to one of the plurality of spectral outputs; and

a touch screen (124, 134) operable to facilitate the first user selection of a first color point corresponding to the first spectral output.

3. The LED lighting system of claim 2,

wherein said graphical user interface (123,133) is further operable to display an intensity scale encompassing a plurality of intensity levels for the first color point;

and

wherein said touch screen (124, 134) is further operable to facilitate a second user selection of a first intensity level for the first color point.

4. The LED lighting system of claim 3,

wherein said controller (112) is further operable to scale the variable time average flow of each current as a function of the second user selection of the first intensity level.