Patents by Inventor Linda S. Brehmer

Linda S. Brehmer 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).

  • Fractional rate modem with trellis
    Patent number: 5251236
    Abstract: A data transmitting QAM modem with partitions incoming data into unequal frames. Some of the bits in each frame are encoded using fractional rate encoding and then recombined the rest of the bits to form frames of equal bits. Trellis encoding is then performed on the frames of equal bits. Advantageously the number of points in the QAM constellation is also increased to an integer divisible by a power of 2 to reduce the complexity of fractional rate encoding.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: October 5, 1993
    Assignee: AT&T Paradyne Corporation
    Inventors: Linda S. Brehmer, Keith Souders