Patents by Inventor Jeffrey R. Rearick

Jeffrey R. Rearick 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).

  • Publication number: 20040130344
    Abstract: Methods for testing integrated circuits (ICs) are provided. An exemplary method, in which the IC has a first pad configured as a signal interface for components external to the IC, the first pad having a receiver configured to receive an input signal from a component external to the IC, comprises: electrically interconnecting automated test equipment (ATE) with the IC; providing at least one stimulus to the IC such that the IC measures a receiver termination characteristic of the first pad; and receiving information corresponding to the receiver termination characteristic of the first pad. Systems and integrated circuits also are provided.
    Type: Application
    Filed: December 16, 2003
    Publication date: July 8, 2004
    Inventors: John G. Rohrbaugh, Jeffrey R. Rearick
  • Patent number: 6741946
    Abstract: A preferred system for facilitating automated test equipment functionality within integrated circuits includes automated test equipment (ATE) configured to electrically interconnect with an integrated circuit and to provide at least one signal to the integrated circuit. A first parametric test circuit, internal to the integrated circuit, also is provided. The first parametric test circuit is adapted to electrically communicate with the automated test equipment so that, in response to receiving a signal from the automated test equipment, the first parametric test circuit measures at least one parameter of a first pad of the integrated circuit.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: May 25, 2004
    Assignee: Agilent Technologies, Inc.
    Inventors: John G. Rohrbaugh, Jeffrey R. Rearick, Shad R. Shepston
  • Publication number: 20040044936
    Abstract: Methods for testing integrated circuits (ICs) are provided. An embodiment of a method comprises: electrically interconnecting automated test equipment (ATE) with the IC; providing at least one stimulus such that the IC determines the presence of a leakage current of the first pad;. and receiving information corresponding to the leakage current of the first pad. Systems also are provided.
    Type: Application
    Filed: June 18, 2003
    Publication date: March 4, 2004
    Inventors: Jeffrey R. Rearick, John G. Rohrbaugh, Shad Shepston
  • Patent number: 6658613
    Abstract: A preferred integrated circuit (IC) includes a first pad electrically communicating with at least a portion of the IC. The first pad includes a first driver and a first receiver, with the first driver being configured to provide a first pad output signal to a component external to the IC, and the first receiver being configured to receive a first pad input signal from a component external to the IC. The first receiver also is configured to provide, to a component internal to the IC, a first receiver digital output signal in response to the first pad input signal. A first test circuit also is provided that is internal to the IC. The first test circuit is adapted to provide information corresponding to the receiver setup time and/or the receiver hold time of the first pad. Systems and methods also are provided.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: December 2, 2003
    Assignee: Agilent Technologies, Inc.
    Inventors: Jeffrey R. Rearick, John G. Rohrbaugh, Shad Shepston
  • Publication number: 20030197520
    Abstract: Integrated circuits (ICs) are provided. A representative IC includes a first pad that incorporates a first driver and a first receiver, with the first driver being configured to provide a first pad output signal to a component external to the IC, and the first receiver being configured to receive a first pad input signal from a component external to the IC. A first test circuit also is provided that is internal to the IC. The first test circuit is adapted to provide information corresponding to the driver strength of the first pad. Systems, methods, computer-readable media and other ICs also are provided.
    Type: Application
    Filed: April 18, 2002
    Publication date: October 23, 2003
    Inventors: Jeffrey R. Rearick, John G. Rohrbaugh, Shad Shepston
  • Publication number: 20030172332
    Abstract: Integrated circuits (ICs) are provided. A representative IC includes a first pad electrically communicating with at least a portion of the IC. The first pad includes a first driver and a first receiver, with the first driver being configured to provide a first pad output signal to a component external to the IC, and the first receiver being configured to receives a first pad input signal from a component external to the IC. The first receiver also is configured to provide, to a component internal to the IC, a first receiver digital output signal in response to the first pad input signal. A first test circuit also is provided that is internal to the IC. The first test circuit is adapted to provide information corresponding to the driver tristate leakage current of the first pad. Methods, computer-readable media, systems and other ICs also are provided.
    Type: Application
    Filed: March 8, 2002
    Publication date: September 11, 2003
    Inventors: Jeffrey R. Rearick, John G. Rohrbaugh, Shad Shepston
  • Publication number: 20030158691
    Abstract: A preferred integrated circuit for facilitating receiver trip level testing functionality includes a first pad which incorporates a first driver and a first receiver. The first driver is configured to provide a first pad output signal to a component external to the IC. The first receiver is configured to receive a first pad input signal from a component external to the IC, and to provide a first receiver digital output signal to a component internal to the IC in response to the first pad input signal. Additionally, a first test circuit is provided that is arranged internal to the IC, with the first test circuit being adapted to provide information corresponding to at least one receiver trip-level characteristic of the first receiver of the first pad. Systems, methods and computer readable media also are provided.
    Type: Application
    Filed: March 7, 2003
    Publication date: August 21, 2003
    Inventors: Shad R. Shepston, Jeffrey R. Rearick, John G. Rohrbaugh
  • Publication number: 20030158690
    Abstract: A preferred system for facilitating automated test equipment functionality within integrated circuits includes automated test equipment (ATE) configured to electrically interconnect with an integrated circuit and to provide at least one signal to the integrated circuit. A first parametric test circuit, internal to the integrated circuit, also is provided. The first parametric test circuit is adapted to electrically communicate with the automated test equipment so that, in response to receiving a signal from the automated test equipment, the first parametric test circuit measures at least one parameter of a first pad of the integrated circuit. Integrated circuits, methods and computer readable media also are provided.
    Type: Application
    Filed: March 7, 2003
    Publication date: August 21, 2003
    Inventors: John G. Rohrbaugh, Jeffrey R. Rearick, Shad R. Shepston
  • Patent number: 6577980
    Abstract: A preferred integrated circuit for facilitating receiver trip level testing functionality includes a first pad which incorporates a first driver and a first receiver. The first driver is configured to provide a first pad output signal to a component external to the IC. The first receiver is configured to receive a first pad input signal from a component external to the IC, and to provide a first receiver digital output signal to a component internal to the IC in response to the first pad input signal. Additionally, a first test circuit is provided that is arranged internal to the IC, with the first test circuit being adapted to provide information corresponding to at least one receiver trip-level characteristic of the first receiver of the first pad. Systems, methods and computer readable media also are provided.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: June 10, 2003
    Assignee: Agilent Technologies, Inc.
    Inventors: Shad R. Shepston, Jeffrey R. Rearick, John G. Rohrbaugh
  • Patent number: 6556938
    Abstract: A preferred system for facilitating automated test equipment functionality within integrated circuits includes automated test equipment (ATE) configured to electrically interconnect with an integrated circuit and to provide at least one signal to the integrated circuit. A first parametric test circuit, internal to the integrated circuit, also is provided. The first parametric test circuit is adapted to electrically communicate with the automated test equipment so that, in response to receiving a signal from the automated test equipment, the first parametric test circuit measures at least one parameter of a first pad of the integrated circuit.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: April 29, 2003
    Assignee: Agilent Technologies, Inc.
    Inventors: John G. Rohrbaugh, Jeffrey R. Rearick, Shad R. Shepston
  • Publication number: 20020135391
    Abstract: A preferred integrated circuit (IC) includes a first pad electrically communicating with at least a portion of the IC. The first pad includes a first driver and a first receiver, with the first driver being configured to provide a first pad output signal to a component external to the IC, and the first receiver being configured to receive a first pad input signal from a component external to the IC. The first receiver also is configured to provide, to a component internal to the IC, a first receiver digital output signal in response to the first pad input signal. A first test circuit also is provided that is internal to the IC. The first test circuit is adapted to provide information corresponding to the receiver setup time and/or the receiver hold time of the first pad. Systems and methods also are provided.
    Type: Application
    Filed: March 21, 2001
    Publication date: September 26, 2002
    Inventors: Jeffrey R. Rearick, John G. Rohrbaugh, Shad Shepston
  • Patent number: 6067651
    Abstract: A method is provided for generating a compacted set of test sequences for use by a tester that tests an integrated circuit having a scan register containing a plurality of bits that define test inputs for the integrated circuit. In accordance with the preferred embodiment, the method begins by defining a list of faults for the integrated circuit and generates a first test sequence that defines values for those inputs necessary (preferably only those inputs necessary) to detect a target fault selected from the list of faults. The method then adds the first test sequence to a list of test sequences and marks the selected fault as detected. The method then generates an additional test sequence that defines values for those inputs necessary (preferably only those inputs necessary) to detect a target fault selected from the list of faults, a fault other than one previously marked as detected.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: May 23, 2000
    Assignee: Hewlett-Packard Company
    Inventors: John G. Rohrbaugh, Jeffrey R. Rearick