Patents by Inventor Eyjolf Steuart Bjornsson

Eyjolf Steuart Bjornsson 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).

  • Computer system operation and control
    Patent number: 4030072
    Abstract: A data processing system includes a control processor in communication with the various devices comprising the data processing system. Communication between the control processor and the data processing system devices occurs on a separate maintenance and diagnostic bus. The control processor initiates diagnostics stored within several of the data processing system devices. The self-diagnosing devices provide an indication to the control processor of successful completion of the diagnostic stored therein. The device being diagnosed and the control processor operate asynchronously of each other and utilize a register bit to indicate successful completion of the diagnostic test.
    Type: Grant
    Filed: December 18, 1974
    Date of Patent: June 14, 1977
    Assignee: Xerox Corporation
    Inventor: Eyjolf Steuart Bjornsson