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Article: Texas Inventor Develops Lighting Device Color Variation Method

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US Fed News Service, Including US State News
Article date:
October 31, 2007
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ALEXANDRIA, Va., Oct. 31 -- John L. Melanson of Austin, Texas, has developed a method of color variations in a dimmable lighting device.

According to the U.S. Patent & Trademark Office: "A method and system allow a lighting device having light sources with multiple color temperatures to vary a color temperature of the lighting device in response to changing dimming levels. The light sources are non-incandescent light sources, such as light emitting diodes and/or gas-discharge lights. A dimmer circuit provides a dimming signal that indicates a selected dimming level."

An abstract of the invention, released by the Patent Office, said: "The lighting device includes a light source driver ...

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