Patents by Inventor Geraldine A. Koehler

Geraldine A. Koehler 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).

  • LED Matrix Driving Device
    Publication number: 20090309855
    Abstract: An LED driving device and method that individually controls the brightness of each LED or LED block of multiple LED arrays is provided. The LED driving device utilizes a comparison of a data input signal with a reference signal using a comparator. The LED driving device may function as a backlight device (e.g. for a LCD display) or may function as a LED display.
    Type: Application
    Filed: July 3, 2007
    Publication date: December 17, 2009
    Inventors: Jongmin Wang, Geraldine A. Koehler