Patents by Inventor George Nicos Ellinas

George Nicos Ellinas 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).

  • Automatic protection switching system in a network
    Patent number: 6760302
    Abstract: A system and method of automatic protection switching for a network (100) which protect against link or node failure. The protection fibers (119, 121) in the links are pre-arranged into protection cycles so that if a link failure occurs, protection switches in the network nodes (101, 107) connected in the failed link will switch the working fiber data path onto an alternate path comprised of protection fibers (119, 121). Data can then be transmitted through the protection cycle around the fault to reach the node on the other side of the failed link. The same protection fibers (119, 121) can be used to protect a priority connection against center switch failure in a network. The protection switches in each node (101, 107) which connect working fibers (115, 117) to protection fibers (119, 121) are very fast and their settings do not depend on the state of the network.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: July 6, 2004
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: George Nicos Ellinas, Thomas E. Stern