Patents by Inventor Peter J. Lupton

Peter J. Lupton 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).

  • Data backup and recovery in a data processing system
    Patent number: 5381545
    Abstract: A data processing system for managing stored data is described. A log recording incremental updates to the data is provided for data recovery purposes in the event of a system failure. A backup copy of at least a portion of the stored data can be made without closing that portion for update. Any in-progress modifications at the time the backup is taken are allowed for by calculating a recovery point before the time of the backup, from which point recovery is to be performed using the recovery log. The recovery point depends at least in part on the start time of the oldest in-progress data file update.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: January 10, 1995
    Assignee: International Business Machines Corporation
    Inventors: Stephen M. Baker, Peter J. Lupton