Patents by Inventor Chris D Heegard

Chris D Heegard 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).

  • Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersion
    Patent number: 7505525
    Abstract: The present invention provides methods for generating self-inverting turbo code interleavers having high separation and high dispersion characteristics. Methods are provided for deterministically generating self-inverting turbo code interleavers from a specification for an existing non-self-inverting interleaver. Methods are also provided for randomly generating self-inverting turbo code interleavers. The present invention also provides methods and apparatus for encoding digital data and communicating the digital data using self-inverting turbo code interleavers/de-interleavers.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: March 17, 2009
    Assignee: Texas Instruments Incorporated
    Inventors: John T. Coffey, Chris D Heegard