Patents by Inventor James McIlvain

James McIlvain 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 for accessing an input/output device using multiple addresses
    Patent number: 6170023
    Abstract: Disclosed is a system for performing input/output (I/O) operations with a processing unit. A processing unit, such as a host system, determines a base and associated alias addresses to address an I/O device, such as a direct access storage device (DASD). The processing unit associates the determined base and alias addresses to the I/O device. The association of base and alias addresses is maintained constant for subsequent I/O operations until the processing unit detects a reassignment of the association of base and alias addresses. The processing unit then determines an available base or alias address to use with an I/O operation and may concurrently execute multiple I/O operations against the I/O device using the base and alias addresses.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: January 2, 2001
    Assignee: International Business Machines Corporation
    Inventors: Brent Cameron Beardsley, James Lincoln Iskiyan, James McIlvain, Philip Ray Mills, Michael Aloysius Paulsen, William G. Thompson, Harry Morris Yudenfriend