Patents by Inventor Michael Y. Weidner

Michael Y. Weidner 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).

  • Soft decision digital communication apparatus
    Patent number: 4742533
    Abstract: An apparatus for performing a soft decision function prior to convolutional decoding in a data communication system using differential quadrature-PSK or other transmission schemes is disclosed. A memory element coupled between a demodulator and the convolutional decoder in a receiver portion of the communications system performs the soft decision function. The memory element contains data organized using probability of occurrence and Log-Likelihood parameters for each potential combination of current and past received signal modulation quantized at a predetermined level.
    Type: Grant
    Filed: January 2, 1987
    Date of Patent: May 3, 1988
    Assignee: Motorola, Inc.
    Inventors: Michael Y. Weidner, Michael F. Durkin