Patents by Inventor Peter J. W. Graumann

Peter J. W. Graumann 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).

  • Pipelined FFT processor with memory address interleaving
    Patent number: 7428564
    Abstract: A fast Fourier transform processor using a single delay path and a permuter provides a reduction in the implementation area and a related reduction in power consumption through efficiencies obtained by the modification of a butterfly unit and the use of a novel interleaver. The modified butterfly unit is obtained by the removal of complex variable multipliers, which is possible due to the simplification of twiddle factors in the stages that correspond to the modified butterfly unit.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: September 23, 2008
    Inventors: Sean G. Gibb, Peter J. W. Graumann
  • Interleaving input sequences to memory
    Patent number: 7415584
    Abstract: An interleaver for use with transform processors provides an address generator allowing for implementation using a reduced memory foot print, and permitting interleaving of an input sequence while minimizing latency.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: August 19, 2008
    Assignee: Cygnus Communications Canada Co.
    Inventors: Sean G. Gibb, Peter J. W. Graumann