Patents by Inventor Roy A. Milligan

Roy A. Milligan 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).

  • Communication port-powered digital communication interface for upgrading software-reconfigurable test set
    Patent number: 6751253
    Abstract: A digital communication interface for downloading software for upgrading the functionality of a telephone craftsperson's butt-in test set is configured to be powered externally by respectively different voltages ported from the host computer and the test set. Digital communication connectivity for software upgrade signals sourced from the host computer for delivery to the control processor of the test set, and for communication signals sourced from the test set for delivery to the host computer, is effected by a pair of opto-isolators which provide signal integrity isolation between the respectively different parameters of the host computer and the test set.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: June 15, 2004
    Assignee: Harris Corporation
    Inventors: Robert B. Walance, John L. Milligan, Roy A. Milligan