Patents by Inventor J. Timothy DuBose

J. Timothy DuBose 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).

  • Digital direct modulator with type of modulation selection
    Patent number: 4584540
    Abstract: The present invention uses digital values of MSK-like waveshapes which can be stored in a storage media such as a ROM and then output in a prescribed fashion such as in phase quadrature through the use of an addressing technique to the ROM. The digital values, each of N bits, are then multiplied in quadrature times a data representative signal which is divided into phase quadrature components. These N+1 bit products are summed to produce a composite digital signal representing analog bipolar values. A digital-to-analog conversion provides the modulated analog output signal.
    Type: Grant
    Filed: May 20, 1985
    Date of Patent: April 22, 1986
    Assignee: Rockwell International Corporation
    Inventors: J. Timothy DuBose, David L. Hale, Robert K. Marston