Patents by Inventor Jeff Tofano

Jeff Tofano 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).

  • Fault tolerance using logical checkpointing in computing systems
    Patent number: 6954877
    Abstract: A system and method for checkpointing a primary computer process to a backup computer process such that if there is a failure of a primary process, the backup process can takeover without interruption. In addition, upgrades to different version of software or equipment can take place without interruption. The invention provides a lightweight checkpointing method that allows checkpointing of only external requests or messages that change the state of the service instance, thereby reducing the overhead and performance penalties. In addition, the present invention checkpoints data for primary and backups that do not share resources but are logically equivalent. All communication between the primary and backup takes places using network protocols.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: October 11, 2005
    Assignee: Agami Systems, Inc.
    Inventors: William J. Earl, Jeff Tofano
  • Fault tolerance using logical checkpointing in computing systems
    Publication number: 20040199812
    Abstract: A system and method for checkpointing a primary computer process to a backup computer process such that if there is a failure of a primary process, the backup process can takeover without interruption. In addition, upgrades to different version of software or equipment can take place without interruption. The invention provides a lightweight checkpointing method that allows checkpointing of only external requests or messages that change the state of the service instance, thereby reducing the overhead and performance penalties. In addition, the present invention checkpoints data for primary and backups that do not share resources but are logically equivalent. All communication between the primary and backup takes places using network protocols.
    Type: Application
    Filed: November 29, 2001
    Publication date: October 7, 2004
    Inventors: William J. Earl, Jeff Tofano