Patents by Inventor Douglas Edward LeDuc

Douglas Edward LeDuc 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).

  • Method and apparatus for determining the status of a transmission link
    Patent number: 6484202
    Abstract: The present invention provides a method, apparatus, and communication system (100) for determining the status of a transmission link (108) between a first port (105) of a first device (104) and a second port (107) of a second device (106). The communication system (100) includes a management device (102). The management device (102) includes an input port (103) and a processor (116). The management device (102) receives a first status of the first port (105) and a second status of the second port (107) on the input port (103). The management device (102) calculates at the processor (116) the status of the transmission link (108) based on the first status and the second status.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: November 19, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Douglas Edward LeDuc, David Frank Simak