Patents by Inventor Dennis Charles Gassman

Dennis Charles Gassman 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).

  • Adapter for coupling a legacy operating system to a driver of an I/O channel which has an incompatible native operating system interface
    Patent number: 6725189
    Abstract: An adapter program couples a legacy operating system to a driver program of an I/O channel which has an incompatible interface to a native operating system. The adapter program includes a translator which receives legacy control structures from the legacy operating system that represents a legacy I/O instruction. The adapter program also includes an interface to the driver program which simulates the native operating system interface. The adapter program further includes an emulator for performing the I/O instruction by interacting with the driver program thru the simulated native operating system interface.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: April 20, 2004
    Assignee: Unisys Corporation
    Inventors: Darrell Rex Pett, Lewis Rossland Carlson, Dennis Charles Gassman
  • ADAPTER FOR COUPLING A LEGACY OPERATING SYSTEM TO A DRIVER OF AN I/O CHANNEL WHICH HAS AN INCOMPATIBLE NATIVE OPERATING SYSTEM INTERFACE
    Publication number: 20030135662
    Abstract: An adapter program couples a legacy operating system to a driver program of an I/O channel which has an incompatible interface to a native operating system. The adapter program includes a translator which receives legacy control structures from the legacy operating system that represents a legacy I/O instruction. The adapter program also includes an interface to the driver program which simulates the native operating system interface. The adapter program further includes an emulator for performing the I/O instruction by interacting with the driver program thru the simulated native operating system interface.
    Type: Application
    Filed: April 22, 1999
    Publication date: July 17, 2003
    Inventors: DARRELL REX PETT, LEWIS ROSSLAND CARLSON, DENNIS CHARLES GASSMAN