Patents by Inventor Mark E. Huntzinger

Mark E. Huntzinger 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).

  • QAM modulator circuit
    Patent number: 4646326
    Abstract: A method and means for quadrature amplitude modulation is described. The improved QAM modulator circuit utilizes a small read only memory to hold multiple versions of a signal constellation resulting in the elimination of hardware modulator circuits. In addition, the described device can be potentially any modulation scheme on an input signal which is sampled in time by modifying the contents of said ROM.
    Type: Grant
    Filed: October 20, 1983
    Date of Patent: February 24, 1987
    Assignee: Motorola Inc.
    Inventors: Charles A. Backof, Jr., Mark E. Huntzinger