Patents by Inventor Michael J. Blasdel

Michael J. Blasdel 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).

  • Apparatus and method for controlling secure communications between peripheral components on computer buses connected by a bridge circuit
    Patent number: 6473825
    Abstract: An apparatus for and a method of controlling secure communication between peripheral components in a communication system. The security level of each peripheral component address in the communication system is fixed. When a message is communicated, a bus access arbiter (122) detects the address of the originating peripheral component, and an address detector (110, 114) detects the address of the destination peripheral component. An address comparison circuit (116) determines whether the address of the destination peripheral component is an address to which the originating peripheral component is permitted to communicate. The address comparison circuit (116) is responsive to the address of the destination peripheral component being an address to which the originating peripheral component is permitted to communicate by permitting communication of messages from the originating peripheral component.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: October 29, 2002
    Assignee: TRW Inc.
    Inventors: James F. Worley, Michael J. Blasdel, Robert R. Hale, Carolyn A. Lynch