Patents by Inventor Nagaraja Uphadya

Nagaraja Uphadya 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).

  • ATM emulated path protection
    Patent number: 5949755
    Abstract: The present invention relates generally to protection of asynchronous transfer mode (ATM) traffic against Synchronous Optical Network (SONET) fiber cuts or other types of transmission media failures in a SONET Ring. The nodes of the Synchronous Optical Network protect the asynchronous transmission mode cells for immediate failures in the Synchronous Optical Network by establishing a table indicating the topology of the nodes in the Synchronous Optical Network. Each node is capable of detecting a loss of header error check synchronization and generating a protection payload data unit, which is egressed to the plurality of nodes. In addition, each node is capable of ingressing protection payload data units from neighboring nodes and for switching the transmission of asynchronous transmission mode cells within the node so that the cells being transmitted in the network are protected.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: September 7, 1999
    Assignee: Fujitsu Network Communications, Inc.
    Inventors: Nagaraja Uphadya, Barry Hagglund, Thi Nguyen