Patents by Inventor David James Shepherd

David James Shepherd 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).

  • Error detection and recovery using an asynchronous transaction journal
    Patent number: 8055991
    Abstract: Illustrative embodiments provide a computer implemented method, an apparatus, and a computer program product for error detection and recovery using an asynchronous transaction journal. In an illustrative embodiment the computer implemented method receives a request message from a requester, stores the request message in the asynchronous transaction journal and determines whether a sequence number contained within the request message is equal to a predetermined number. When the sequence number is equal, the computer implemented method performs a request in the request message to obtain a result and returns the result to the requester; otherwise the computer implemented method detects an error. The computer implemented method then attempts recovery from the error; otherwise the computer implemented method notifies the requestee.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: November 8, 2011
    Assignee: International Business Machines Corporation
    Inventors: David Franklin Manning, David James Shepherd
  • ERROR DETECTION AND RECOVERY USING AN ASYNCHRONOUS TRANSACTION JOURNAL
    Publication number: 20090158108
    Abstract: Illustrative embodiments provide a computer implemented method, an apparatus, and a computer program product for error detection and recovery using an asynchronous transaction journal. In an illustrative embodiment the computer implemented method receives a request message from a requester, stores the request message in the asynchronous transaction journal and determines whether a sequence number contained within the request message is equal to a predetermined number. When the sequence number is equal, the computer implemented method performs a request in the request message to obtain a result and returns the result to the requester; otherwise the computer implemented method detects an error. The computer implemented method then attempts recovery from the error; otherwise the computer implemented method notifies the requestee.
    Type: Application
    Filed: December 12, 2007
    Publication date: June 18, 2009
    Inventors: David Franklin Manning, David James Shepherd