Patents by Inventor Leland Delmar Howe, Jr.

Leland Delmar Howe, Jr. 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).

  • Instruction retry mechanism for a data processing system
    Patent number: 4044337
    Abstract: An instruction retry mechanism for enabling a digital data processing system having main, buffer and local stores to restart and, in most cases, recover from an error or failure in the processor hardware associated with the buffer and local stores. A first copy storage mechanism is provided for temporarily storing copies of data written into the local store. Two separately addressable multibit copy storage locations are provided for each local store address. One is capable of holding a copy of the latest data written into a given local store address during the most recent machine instruction cycle involving such address, and the other is capable of holding a copy of the latest data written into the same local store address during the next most recent machine instruction cycle involving such address.A second copy storage mechanism is provided for temporarily storing copies of data written into the buffer store by the instruction processing or instruction execution portion of the system.
    Type: Grant
    Filed: December 23, 1975
    Date of Patent: August 23, 1977
    Assignee: International Business Machines Corporation
    Inventors: Glen LeRoy Hicks, Leland Delmar Howe, Jr., Frank Anthony Zurla, Jr.