Patents by Inventor Julie A. Campbell

Julie A. Campbell 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: 20240118314
    Abstract: A cable assembly has a connector to receive a signal, a cable connected to the connector, the cable having a length and one or more conductors along at least part of the length to conduct the signal, a magnetic material external to the one or more conductors, and an elastomer material external to the one or more conductors. A cable assembly has a connector to receive a differential signal, a cable connected to the connector having symmetric pair conductors, one or more discrete magnetic components spaced along the length of the cable, and one or more elastomer components next to at least one of the one or more magnetic components. A cable assembly has a connector to receive a differential signal, a cable connected to the connector having symmetric pair conductors, an elastomer material at least partially enclosing the cable, and a magnetic material at least partially enclosing the cable.
    Type: Application
    Filed: October 3, 2023
    Publication date: April 11, 2024
    Applicant: Tektronix, Inc.
    Inventors: Julie A. Campbell, David M. Ediger, Daniel G. Knierim, David Thomas Engquist
  • Publication number: 20240087776
    Abstract: A shunt resistor has a substrate having electrically conductive structures to carry current in a current path, a resistive portion in electrical contact with the electrically conductive structures, and one or more canceling inductance leads electrically connected to the electrically conductive structures and the resistive portion, the one or more canceling inductance configured to cancel inductive effects in a voltage measurement across the resistive portion. A modular tip interconnect has a connector at a first end of the interconnect configured to connect to a probe tip of a test and measurement instrument, and the above shunt resistor located at a second end of the interconnect configured to connect to a device under test (DUT).
    Type: Application
    Filed: September 7, 2023
    Publication date: March 14, 2024
    Applicant: Tektronix, Inc.
    Inventors: Julie A. Campbell, Christopher R. Muggli, Daniel G. Knierim, David M. Ediger, Richard N. Atherton
  • Publication number: 20240069094
    Abstract: A test system includes a test and measurement device having an input port for receiving signals for testing or measuring, a reprogrammable test accessory having an output coupled to the input port of the test and measurement device. The reprogrammable test accessory includes a test port structured to accept one or more test signals from a Device Under Test (DUT), a processor, a reprogrammable data protocol analyzer for determining whether data carried by the one or more test signals from the DUT conform to a predetermined data protocol, and a reprogramming facility for modifying the reprogrammable data protocol analyzer from a first configuration to a second configuration. Methods of operation are also described.
    Type: Application
    Filed: November 7, 2023
    Publication date: February 29, 2024
    Applicant: Tektronix, Inc.
    Inventors: Charles W. Case, Daniel G. Knierim, Joshua J. O'Brien, Josiah A. Bartlett, Julie A. Campbell
  • Publication number: 20240069065
    Abstract: An apparatus includes a fixed substrate having at least two contact structures, a movable substrate having at least two electrically conductive paths, a housing containing the fixed substrate and the movable substrate, a plurality of connectors in the housing, each connector connecting to one of the at least two contact structures to connect to ground and a spring contact, the plurality of connectors arranged to connect to at least one of the conductive paths depending upon a position of the movable substrate, and a motorized stage in the housing to move the movable substrate to align one of the at least two conductive paths to form a connection between two of the connectors. The apparatus may be part of a test and measurement instrument, and a method of operating the apparatus is also included.
    Type: Application
    Filed: November 6, 2023
    Publication date: February 29, 2024
    Applicant: TEKTRONIX, INC.
    Inventors: JULIE A. CAMPBELL, DANIEL G. KNIERIM, BARTON T. HICKMAN
  • Publication number: 20240061021
    Abstract: A current measurement device with a shunt resistor of a resistive core with an opening and measurement leads, a Rogowski coil with electrical contacts surrounding the resistive core, conductive layers on first and second sides of the resistive core, one or more insulative layers between the conductive layers and the Rogowski coil, the current measurement device configured to combine signals from the shunt resistor and the Rogowski core. The current measurement device may have a Rogowski coil on a flexible substrate at least partially wrapped around the shunt resistor. A current measurement device has a rigid substrate, vias filled with a conductive material through the rigid substrate, conductive layers on the top surface and the bottom surface connecting to the vias to form a Rogowski coil structure, one or more insulative layers directly on the coil structure, a shunt resistor directly on the one or more insulative layers.
    Type: Application
    Filed: October 31, 2023
    Publication date: February 22, 2024
    Applicant: Tektronix, Inc.
    Inventors: Julie A. Campbell, Emily L. Becher, David M. Ediger, Matthew J. Hull, Daniel G. Knierim
  • Publication number: 20230375596
    Abstract: A test and measurement accessory has a shunt configured to be located in a current path between a busbar and an electronic module and structured to minimize length added to the current path, the shunt having an opening extending through the shunt, and a resistive portion, the resistive portion configured to form a portion of the current path, and two or more contacts, at least one of the contacts extending through the opening and electrically insulated from the resistive portion of the shunt. A test and measurement accessory has a shunt, two or more contacts, at least one of the contacts extending through the opening, and a resistive portion comprising a plurality of resistors surrounding an insulative portion. A test and measurement accessory has a shunt including a washer having an opening, a resistive portion, and two or more contacts.
    Type: Application
    Filed: May 17, 2023
    Publication date: November 23, 2023
    Applicant: Tektronix, Inc.
    Inventors: Daniel G. Knierim, Julie A. Campbell, David M. Ediger
  • Patent number: 11815548
    Abstract: A new test system includes a programmed device having an input port for receiving a signal for testing or measuring on the programmed device, and a reprogrammable test accessory having an output coupled to the input port of the programmed device. The reprogrammable test accessory further includes a test port structured to accept one or more test signals from a Device Under Test (DUT), and a reprogrammable processor. The reprogrammable processor may further include reprogrammable standards and protocols, reprogrammable triggers and margin detection, reprogrammable link training, reprogrammable handshaking, and reprogrammable setup and control facilities for either or both of the DUT and the programmed device.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: November 14, 2023
    Assignee: Tektronix, Inc.
    Inventors: Charles W. Case, Daniel G. Knierim, Joshua J. O'Brien, Josiah A. Bartlett, Julie A. Campbell
  • Patent number: 11808786
    Abstract: An apparatus has at least substrate having at least two conductive paths, a least two connectors positioned in a first plane, and a movable stage connected to one of the at least one substrate to move the one substrate perpendicular to the first plane form an electrically conductive path between two of the at least two connectors.
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: November 7, 2023
    Assignee: Tektronix, Inc.
    Inventors: Julie A. Campbell, Daniel G. Knierim, Barton T. Hickman
  • Publication number: 20230221348
    Abstract: A structure has a flexible thermally conductive material having an adhesive surface and a non-adhesive surface, and a thermally conductive adhesive adhered to the adhesive surface of the flexible thermally conductive material leaving the non-adhesive surface exposed to an atmosphere in which the structure resides. A structure has a substrate having one or more conductive paths, and a flexible, thermally conductive material attached to at least a portion of the substrate to draw heat away from the conductive paths. An apparatus has a substrate having one or more conductive paths, a probe tip at one end of the substrate configured to electronically connect with a device under test, and a flexible, thermally conductive material attached to at least a portion of the substrate to draw heat away from the probe tip and conductive paths.
    Type: Application
    Filed: November 30, 2022
    Publication date: July 13, 2023
    Applicant: Tektronix, Inc.
    Inventor: Julie A. Campbell
  • Patent number: 11578925
    Abstract: A thermal management system for a test-and-measurement probe that includes a thermally insulated shroud and a fluid inlet conduit. The shroud is configured to enclose a first portion of a probe head of the probe within an interior cavity of the shroud, while permitting a second portion of the probe head to extend out of the shroud. The shroud further includes a fluid outlet passageway configured to permit a heat-transfer fluid to pass from a probe-head end of the interior cavity, through the interior cavity of the shroud, and out of the shroud through an access portion of the shroud. The fluid inlet conduit enters the shroud through the access portion of the shroud, extends through the interior cavity of the shroud, and is configured to introduce the heat-transfer fluid to the probe-head end of the interior cavity.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: February 14, 2023
    Assignee: Tektronix, Inc.
    Inventors: Julie A. Campbell, David Thomas Engquist, Sam J. Strickling
  • Publication number: 20220326278
    Abstract: An apparatus has at least substrate having at least two conductive paths, a least two connectors positioned in a first plane, and a movable stage connected to one of the at least one substrate to move the one substrate perpendicular to the first plane form an electrically conductive path between two of the at least two connectors.
    Type: Application
    Filed: April 8, 2022
    Publication date: October 13, 2022
    Inventors: JULIE A. CAMPBELL, DANIEL G. KNIERIM, BARTON T. HICKMAN
  • Patent number: 11452656
    Abstract: A surgical table includes a base for standing on a floor; a column extending from the base; a tabletop providing a patient support surface; and a mechanism coupling the tabletop to the column and for enabling rotational movement of the tabletop relative to the column about two orthogonal axes, the mechanism having a first frame connected to the tabletop and a second frame connected to the column and rotatably mounted on the first frame about an axis that is orthogonal to both longitudinal and transverse directions of the tabletop. Also disclosed is a system for helping a user dispose a tabletop and a base of a surgical table at a predetermined relative position, a system for recording actions performed by a surgical table, and surgical tables configured to adjust a height of a tabletop thereof in specific manners.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: September 27, 2022
    Assignee: Steris Solutions Limited
    Inventors: Julie Campbell, Mark Portlock, Matt Clayton, Jeremy Hinton, Richard Harding
  • Patent number: 11385258
    Abstract: A method for acquiring a signal from an encapsulated test point on a device under test, includes forming a hole in an encapsulant adjacent to the test point, the hole extending through the encapsulant to the test point, delivering a UV-curable conductive adhesive into the hole such that the delivered adhesive contacts the test point, applying UV light from a UV light source to cure the delivered adhesive, and connecting a conductive element between the cured adhesive and a test and measurement instrument.
    Type: Grant
    Filed: October 4, 2020
    Date of Patent: July 12, 2022
    Assignee: Tektronix, Inc.
    Inventors: Julie A. Campbell, Karl A. Rinder, Regina R. Mrozik
  • Patent number: 11328624
    Abstract: The present invention is directed to systems for interfacing between sensors and sensor simulators and clinical monitors and devices. The present invention is used to incorporate sensors and sensor simulators into training and clinical demonstrations. A system in accordance with the present invention includes a hardware component configured to transmit an output signal associated with a typical clinical sensor such as sensors for end-tidal CO2 pulse oximetry, temperature, blood pressure, near-infrared spectroscopy (NIRS) sensors, and CPR sensors to a clinical monitor or similar device. The system of the present invention also provides a software component to produce and transmit or to receive and make use of the simulated or actual sensor; the system also provides a hardware component to interface the software component to the clinical monitor, defibrillator, and/or sensor.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: May 10, 2022
    Assignee: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Jordan Duval-Arnould, Julie Campbell, Elizabeth Hunt
  • Publication number: 20220018896
    Abstract: A new test system includes a programmed device having an input port for receiving a signal for testing or measuring on the programmed device, and a reprogrammable test accessory having an output coupled to the input port of the programmed device. The reprogrammable test accessory further includes a test port structured to accept one or more test signals from a Device Under Test (DUT), and a reprogrammable processor. The reprogrammable processor may further include reprogrammable standards and protocols, reprogrammable triggers and margin detection, reprogrammable link training, reprogrammable handshaking, and reprogrammable setup and control facilities for either or both of the DUT and the programmed device.
    Type: Application
    Filed: July 19, 2021
    Publication date: January 20, 2022
    Applicant: Tektronix, Inc.
    Inventors: Charles W. Case, Daniel G. Knierim, Joshua J. O'Brien, Josiah A. Bartlett, Julie A. Campbell
  • Publication number: 20220011361
    Abstract: A method of securing a probe tip to a device under test (DUT), the method comprising: positioning the probe tip near a test point of the DUT, the probe tip comprising a connection point on a signal-path portion of the probe tip and an attachment tab, the connection point making an electrical connection with the test point of the DUT, the attachment tab extending away from the signal-path portion of the probe tip; applying an adhesive to the DUT through a hole in the attachment tab of the probe tip; and curing the adhesive to secure the probe tip to the DUT.
    Type: Application
    Filed: June 4, 2021
    Publication date: January 13, 2022
    Applicant: Tektronix, Inc.
    Inventor: Julie A. Campbell
  • Patent number: 11079408
    Abstract: A test-probe tip having a tip component, a resistive element, and a compliance member. The tip component is configured to electrically connect to a device under test at a first end of the tip component. The resistive element is electrically connected to a second end of the tip component along a signal-flow axis. The resistive element is configured to provide electrical impedance to an electrical signal passing through the resistive element. The compliance member is configured to allow movement of the tip component in a first direction when a mechanical force applied to the tip component in the first direction and to cause movement of the tip component in an opposite, second direction when the mechanical force applied to the tip component is removed or reduced. Architectures for the resistive element are also described.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: August 3, 2021
    Assignee: Tektronix, Inc.
    Inventors: Julie A. Campbell, Josiah A. Bartlett
  • Publication number: 20210186789
    Abstract: A surgical table includes a base for standing on a floor; a column extending from the base; a tabletop providing a patient support surface; and a mechanism coupling the tabletop to the column and for enabling rotational movement of the tabletop relative to the column about two orthogonal axes, the mechanism having a first frame connected to the tabletop and a second frame connected to the column and rotatably mounted on the first frame about an axis that is orthogonal to both longitudinal and transverse directions of the tabletop. Also disclosed is a system for helping a user dispose a tabletop and a base of a surgical table at a predetermined relative position, a system for recording actions performed by a surgical table, and surgical tables configured to adjust a height of a tabletop thereof in specific manners.
    Type: Application
    Filed: September 5, 2018
    Publication date: June 24, 2021
    Inventors: Julie Campbell, Mark Portlock, Matt Clayton, Jeremy Hinton, Richard Harding
  • Publication number: 20210148640
    Abstract: A thermal management system for a test-and-measurement probe that includes a thermally insulated shroud and a fluid inlet conduit. The shroud is configured to enclose a first portion of a probe head of the probe within an interior cavity of the shroud, while permitting a second portion of the probe head to extend out of the shroud. The shroud further includes a fluid outlet passageway configured to permit a heat-transfer fluid to pass from a probe-head end of the interior cavity, through the interior cavity of the shroud, and out of the shroud through an access portion of the shroud. The fluid inlet conduit enters the shroud through the access portion of the shroud, extends through the interior cavity of the shroud, and is configured to introduce the heat-transfer fluid to the probe-head end of the interior cavity.
    Type: Application
    Filed: November 12, 2020
    Publication date: May 20, 2021
    Applicant: Tektronix, Inc.
    Inventors: Julie A. Campbell, David Thomas Engquist, Sam J. Strickling
  • Patent number: 10962566
    Abstract: Test and measurement probes include a body, an adjustable member moveably coupled to the body and having a changeable position relative to the body, and a transducer subsystem structured to measure the position of the adjustable member and configured to output a position signal indicative of the position of the adjustable member. A change in the position of the adjustable member causes a change in an electrical characteristic of the probe. A position-dependent correction factor may be used to correct the change in the electrical characteristic. Methods of compensating for a change in a response of a test and measurement system include monitoring a position sensor output to detect a position change of a first part of a probe relative to a second part, determining that the position sensor output value has crossed a boundary value between a first and second range, and applying a compensation factor corresponding to the second range to modify the response of the system.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: March 30, 2021
    Assignee: Tektronix, Inc.
    Inventors: Julie A. Campbell, Josiah A. Bartlett, David A. Sailor, Jay Schwichtenberg