Patents by Inventor John David Purcell

John David Purcell 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).

  • System and method for selecting an interrupt system based upon the operating system of a multiprocessor system
    Patent number: 5802350
    Abstract: A system and method for allowing different operating systems to be utilized in a multiprocessing system is provided in which each of the different operating systems requires different types of interrupt controllers. The system and method comprises detecting which of the at least two different types of operating systems is utilized within the multiprocessing system, and then selecting the appropriate interrupt controller from the different types of interrupt controllers.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: September 1, 1998
    Assignee: International Business Machines Corporation
    Inventors: Keenan Wynn Franz, John David Purcell, Kevin F. Reick