Patents by Inventor Tirumanjanam K. Rangarajan

Tirumanjanam K. Rangarajan 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).

  • Methods and apparatus for updating information in a computer system using logs and state identifiers
    Patent number: 5485608
    Abstract: A data processing system maintains logs for system and media recovery. The logs contain state identifiers each uniquely identifying the state of a corresponding section of a storage medium, such as a disk. The state identifiers are assigned after changes have been made such that they can be determined from the information in the logs. One implementation involves assigning state identifiers in a known sequence, such as in a monotonically increasing sequence of integers beginning with zero.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: January 16, 1996
    Assignee: Oracle Corporation
    Inventors: David B. Lomet, Peter M. Spiro, Ashok M. Joshi, Ananth Raghavan, Tirumanjanam K. Rangarajan