Patents by Inventor Christopher Adam Norris

Christopher Adam Norris 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).

  • Patent number: 6823349
    Abstract: A method and system for synchronizing a plurality of data images in a computer system, includes a primary image and at least one secondary image which are synchronized. A host computer issues write requests to a primary image site which is also transmitted to a secondary image site. Writing to the primary image and the secondary image at the primary image site and secondary site is conducted simultaneously. If a failure to write to the secondary image occurs, a fracture log is created which is a bitmap representative of changed regions in the primary image at the primary image site in response to the write request. When writing to the secondary image is restored, the log can be used to synchronize the primary image and the secondary image.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: November 23, 2004
    Assignee: EMC Corporation
    Inventors: Alan Lee Taylor, Christopher Adam Norris, William Paul Hotle, Kenneth John Hayman