Patents by Inventor Kevin Varghese

Kevin Varghese 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).

  • Application recovery from network-induced data corruption
    Patent number: 8620874
    Abstract: A source application reads a body of data in data block sized units and calculates a checksum value for each data block before sending the data block, the calculated checksum value and the identifier. Upon receipt, a destination application independently calculates a checksum value for each received data block and compares the two checksums. Non-matching checksums indicate a network-induced error in the data block. Identifiers for the erroneous data blocks are transmitted to the source application after all of the data blocks have been initially transmitted. The source application thereafter resends only those data blocks identified. The destination application repeats the process of comparing checksums and transmitting identifiers to the source application until all of the data blocks of the body of data have been correctly received, and then uses the data blocks to recreate the body of data.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: December 31, 2013
    Assignee: NetApp, Inc.
    Inventors: Felix Xavier, Kevin Varghese, Tijin George, Jayalakshmi Pattabiraman
  • Application recovery from network-induced data corruption
    Patent number: 7991750
    Abstract: A source application reads a body of data in data block sized units and calculates a checksum value for each data block before sending the data block, the calculated checksum value and the identifier. Upon receipt, a destination application independently calculates a checksum value for each received data block and compares the two checksums. Non-matching checksums indicate a network-induced error in the data block. Identifiers for the erroneous data blocks are transmitted to the source application after all of the data blocks have been initially transmitted. The source application thereafter resends only those data blocks identified. The destination application repeats the process of comparing checksums and transmitting identifiers to the source application until all of the data blocks of the body of data have been correctly received, and then uses the data blocks to recreate the body of data.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: August 2, 2011
    Assignee: Network Appliance, Inc.
    Inventors: Felix Xavier, Kevin Varghese, Tijin George, Jayalakshmi Pattabiraman