Patents by Inventor Robert C. Hilliard

Robert C. Hilliard 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).

  • Test system
    Patent number: 7237718
    Abstract: A test system (1) has a test controller (2) and at least one probe (3). An ICC card (C) is inserted into a slot (8) of the probe (3), and a card-simulating interface (5) of the probe (3) is inserted in the slot (S) of the terminal (T) under test. The test controller (2) communicates bi-directionally with the terminal (T) and an external transaction processing system (B). Up to six data monitoring points (100 to 105) are possible, different numbers of points providing different modes of operation.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: July 3, 2007
    Assignee: Acquirer Systems Research Limited
    Inventors: Aidan Ivor Corcoran, Robert C. Hilliard
  • Electrical system
    Patent number: 4172968
    Abstract: 1. In a secure communication system; means for producing an analog intelligence signal; means for limiting the amplitude of said signal; means for transforming portions of said amplitude limited signal occurring in time sequence into a corresponding digital signal consisting of sequentially occurring n-digit words; means for combining said digital signal with a digital keystream signal in modulo 2.sup.n fashion; and means for transforming the digital signal produced by said combining means into an analog signal.
    Type: Grant
    Filed: December 8, 1961
    Date of Patent: October 30, 1979
    Assignee: General Atronics Corporation
    Inventors: Bernard D. Steinberg, Robert C. Hilliard