Patents by Inventor Timothy Bushell

Timothy Bushell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and drive circuit for controlling leds
    Publication number: 20050104541
    Abstract: A method and control circuit are disclosed for controlling light emitting diodes (“LEDs”). Based upon the LED's current versus intensity characteristic and temperature versus intensity characteristic, the rate of change of LED output intensity with respect to current is calculated. Adjusting LED current to provide zero rate of change ensures that LED output is maximised.
    Type: Application
    Filed: September 29, 2004
    Publication date: May 19, 2005
    Inventors: Timothy Bushell, Christopher Latham