Patents by Inventor Leo P. McHugh

Leo P. McHugh 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).

  • Patent number: 7064442
    Abstract: The invention relates to integrated circuit package devices including at least two component chips. In particular the invention describes such devices having a transformer provided between the two components chips, the transformer providing isolation between the component chips and wherein the total assembly is sufficiently small that it can be integrated in standard IC packages.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: June 20, 2006
    Assignee: Analog Devices, Inc.
    Inventors: William A. Lane, Mike A. O'Neill, John R. Reidy, Tom D. Moore, Nicola M. O'Byrne, Leo P. McHugh
  • Patent number: 5714892
    Abstract: A three state logic input recognizes three logic levels: an intermediate level in addition to the conventional "high" and "low" levels employed by binary logic systems. The three state device may be used in purely ternary logic systems or in "hybrid" systems which combine binary and ternary logic. In a preferred embodiment, the new three state logic device comprises a "passive driver" which is connected to produce one of three predetermined logic levels in corresponding to impedance paths from its input terminal through an external circuit to a positive or negative voltage supply. In hybrid ternary/binary applications, the new three state input device includes a decoder that is connected to decode the three predetermined logic levels provided by the passive driver into binary logic for use by associated binary logic devices. In a digital to analog converter application, the three state input device is employed to recognize both a binary logic and a control signal at one input pin to the DAC.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: February 3, 1998
    Assignee: Analog Devices, Inc.
    Inventors: Derek F. Bowers, James J. Ashe, Leo P. Mchugh