Patents by Inventor Thomas J. Dingwall

Thomas J. Dingwall 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).

  • Method and apparatus for embedding a real-time multi-tasking kernel in a non-real-time operating system
    Patent number: 5903752
    Abstract: An improved method and apparatus for embedding a real-time multi-tasking kernel in a non-real-time operating system is disclosed. Through encapsulating a real-time kernel into the interrupt handling environment of a non-real-time operating system, such as Windows.RTM., the method of the present invention allows for an entire real-time environment to be supported within the operating system. The scheduler of the real-time kernel supports multiple threads of execution all running at higher priority than the application tasks. By using synchronization mechanisms of the operating system, e.g. VxD events in enhanced mode Windows.RTM., the real-time tasks are able to make use of system services of the operating system. Real-time tasks not requiring system services execute more quickly from interrupt mode. Real-time tasks requiring system services execute partially from interrupt mode and partially from event mode.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: May 11, 1999
    Assignee: Intel Corporation
    Inventors: Thomas J. Dingwall, Narasimha Kumar
  • Embedding a real-time multi-tasking kernel in a non-real-time operating system
    Patent number: 5721922
    Abstract: The invention provides a method and apparatus for embedding a real-time multi-tasking kernel in a non-real-time operating system. Through encapsulating a real-time kernel into the interrupt handling environment of a non-real-time graphical user interface, such as Windows.RTM., the method of the present invention allows for an entire real-time environment to be supported within the graphical user interface. The scheduler of the real-time kernel supports multiple threads of execution all running at higher priority than the graphical user interface tasks. By using synchronization mechanisms of the graphical user interface, e.g. V.times.D events in enhanced mode Windows.RTM., the real-time tasks are able to make use of system services of the graphical user interface.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: February 24, 1998
    Assignee: Intel Corporation
    Inventor: Thomas J. Dingwall