Patents by Inventor James M. Brannen

James M. Brannen 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).

  • Gamma correction of the viewing angle of liquid crystal display
    Patent number: 6297790
    Abstract: The present invention is directed to a method and apparatus for adjusting the viewing angle of a liquid crystal display. In a preferred embodiment of the present invention, a plurality of digital-to-analog converters are arranged in pairs which have a fixed relationship. By determining appropriate values for the digital-to-analog converters, a desired viewing angle may be obtained for a liquid crystal display.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: October 2, 2001
    Assignees: Universal Avionics Systems Corporation, Instrument Division and L-3 Communications Corporation
    Inventors: Joseph W. Goode, III, James D. Cleland, James M. Brannen
  • Method for cooling a lamp backlighting module of a liquid crystal display
    Patent number: 6181070
    Abstract: The present invention is a method for cooling a lamp backlighting module of a liquid crystal display. A preferred method of the present invention begins by providing a predetermined power input to a lamp. As power is provided to the lamp, the temperature of the lamp is monitored. When the temperature of the lamp rises to a first predetermined temperature, one or more fans are turned on which are adapted to dissipate the heat generated by the lamp. After the fan(s) cool the lamp to a second, lower predetermined temperature, the fan(s) are turned off. By using a fan to dissipate heat generated by a lamp backlighting module, the present invention may maintain the temperature of the lamp within a desired range. As a result, the present invention preferably increases the reliability and performance of the liquid crystal display.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: January 30, 2001
    Assignees: Universal Avionics Systems Corporation - Instrument Division, L-3 Communications Corporation
    Inventors: William R. Dunn, James M. Brannen