Patents by Inventor Anders {umlaut over (O)}rling

Anders {umlaut over (O)}rling 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).

  • Computationally efficient analysis and synthesis of real signals using discrete fourier transforms and inverse discrete fourier transforms
    Patent number: 6169723
    Abstract: The present invention significantly reduces the number of complex computations that must be performed to compute a DFT or IDFT when a pattern is identified in an original input data sequence and is used to modify the data sequence in order to reduce the size of the sequence to be transformed. A DFT (IDFT) is performed on the modified input data sequence to generate a transformed sequence. The transformed data sequence is then manipulated to generate an output sequence that corresponds to the DFT (IDFT) of the original input data sequence without having actually calculated the DFT (IDFT) of the entire, original input data sequence. Three symmetrical patterns are used in the invention to simplify and render more efficient DFT and IDFT computations: Hermite symmetry, index-reversed, complex-conjugate symmetry, and mirror symmetry.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: January 2, 2001
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Antoni Fertner, Mattias Hyll, Anders {umlaut over (O)}rling