Patents by Inventor David Keir Roberts

David Keir Roberts 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).

  • Removable hardware device authentication system and method
    Patent number: 6931533
    Abstract: A hardware authentication system and method for equipment including at least one removable hardware component comprising a processing unit within the equipment that includes a first pseudo-random number generator responsive to at least one non-deterministic event for generating a pseudo-random number. A second pseudo-random number generator is provided on the removable hardware component. The second pseudo-random number generator is also responsive to the at least one non-deterministic event and generates a pseudo-random number. The processing unit compares the pseudo-random numbers generated by the first and second pseudo-random number generators to detect coincidence and thereby determine authenticity of the hardware component.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: August 16, 2005
    Assignee: Mitel Knowledge Corporation
    Inventor: David Keir Roberts
  • Hardware authentication system and method
    Publication number: 20010056534
    Abstract: A hardware authentication system method for equipment including at least one removable hardware component comprises a processing unit within the equipment that includes a first pseudo-random number generator responsive to at least one non-deterministic event for generating a pseudo-random number. A second pseudo-random number generator is provided on the removable hardware component. The second pseudo-random number generator is also responsive to the at least one non-deterministic event and generates a pseudo-random number. The processing unit compares the pseudo-random numbers generated by the first and second pseudo-random number generators to detect coincidence and thereby determine authenticity of the hardware component.
    Type: Application
    Filed: April 4, 2001
    Publication date: December 27, 2001
    Applicant: Mitel Knowledge Corporation
    Inventor: David Keir Roberts