Patents by Inventor Rodger J. Williams

Rodger J. Williams 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 of reducing synchronization rearrangements in synchronous transmission systems
    Patent number: 6185247
    Abstract: The invention substantially reduces the occurrence of unnecessary synchronization rearrangements in nodes within synchronous transmission systems such as SONET networks. In one embodiment of the invention, the method disclosed for reducing synchronization rearrangements within interconnected nodes of a synchronous transmission system includes the steps of: detecting, at a node within the synchronous transmission system, a change in a synchronization status message received at the node; propagating the changed synchronization status message from the node to another node within the synchronous transmission system if the changed synchronization status message corresponds to an active timing reference; waiting a specified amount of time upon detection of the change in the synchronization status message; then determining whether a synchronization rearrangement is necessary at the node; and then performing a synchronization rearrangement at the node if necessary.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: February 6, 2001
    Assignee: Nortel Networks Limited
    Inventors: Rodger J. Williams, Craig Donald Suitor