Patents by Inventor Dirk E. Swanson

Dirk E. Swanson 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).

  • Dither amplitude correction for constant current drivers
    Patent number: 7154326
    Abstract: In satisfying the above need, as well as overcoming the enumerated drawbacks and other limitations of the related art, the present invention provides an improved switched driver circuit. As disclosed above, there is a need to compensate for the high impedance load characteristics in certain implementations of hysteretic switching constant current drivers. The switching waveform of switching constant current driver circuits may be modified in such a way that retains the important dither characteristics and improves system level performance.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: December 26, 2006
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Dirk E. Swanson, Matthew T. LaDuke, Mark L. Hopper, Robert J. Bolduc