Patents by Inventor Darrell B. Piatt

Darrell B. Piatt 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).

  • Patent number: 5459716
    Abstract: A method for rapidly restoring disrupted communications services between nodes of a network following a loss of service due to a circuit outage such as may occur, for example, as a result of an optical fiber cable break. The method is operable, however, irrespective of the transmission technology. Treating the telecommunications traffic as a commodity, a multicommodity model is developed using a measure of the commodities desired to be restored between network nodes and the capacity available for restoral in spare and impacted edges of the network. Action variables are established by use of representational "dummy nodes pairs" interconnected by "action edges." A multicommodity algorithm is applied to the model and to the decision variables to determine reroutes and actions to be taken within nodes of the network to effect the restoral reroutes.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: October 17, 1995
    Assignee: MCI Communications Corporation
    Inventors: Furrukh Fahim, Hsueh-Mei Chiu, Darrell B. Piatt, Maude A. deLaski