Patents by Examiner Tung X. Nguyen
  • Patent number: 9753062
    Abstract: A system and method for making accurate current measurements by determining the differential voltage drop across a resistor in series with the load in the presence of large common mode voltages. A compensating voltage equal in magnitude but 180 degrees out of phase with a common mode voltage is generated and applied to a network of resistors connected to a measurement amplifier, thereby significantly reducing the magnitude of the common mode voltage at the measurement amplifier's inputs. An error correction voltage is generated and applied to the output of the measurement amplifier to compensate for errors in the values of the resistor network.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: September 5, 2017
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Federico Mazzarella, Massimiliano Musazzi
  • Patent number: 9753099
    Abstract: A detector includes a detection winding, a detection winding measurement section, and a detection section. A magnetic core has a hole penetrating the magnetic core along a non-uniform cross section. The detection winding includes a wire inserted into the hole and surrounding a periphery of a detection region that is a part of the non-uniform cross section and has a magnetic flux density different from an average magnetic flux density of the non-uniform cross section. The detection winding measurement section performs a measurement relating to an electromotive force induced by the detection winding. The detection section detects a magnetic bias, a magnetic saturation, or an amount of magnetic flux in the magnetic core based on a measurement result of the detection winding measurement section.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: September 5, 2017
    Assignee: DENSO CORPORATION
    Inventor: Kazuhiro Umetani
  • Patent number: 9752999
    Abstract: This application relates to a moisture ingress sensor. In particular, this application relates to a moisture ingress sensor that can detect liquid ingress into an electronic device. The moisture ingress sensor can include a resistor, an N-channel MOSFET, an operation amplifier, comparators, and an AND logic gate. The moisture ingress sensor is configured to provide a lower power means for accurately detecting moisture in an electronic device. Multiple areas of the electronic device can include the moisture ingress sensor in order to optimize the detection of moisture for at a variety of regions of the electronic device. Additionally, the electronic device can record signals from the moisture ingress sensor and shut down components of the electronic device that could be affected by the detected moisture. Furthermore, the moisture ingress sensor can be tuned to detect one or more types of liquids.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: September 5, 2017
    Assignee: Apple Inc.
    Inventors: Kirill Kalinichev, Kevin M. Keeler, Brian C. Menzel
  • Patent number: 9753083
    Abstract: A parallelism adjusting device and a parallelism adjusting method capable of adjusting the parallelism between the surface of a semiconductor and the surface of an electrode by reducing the load on the semiconductor and capable of shortening the cycle time by increasing the operating speed. A probe device of adjusting the parallelism between the surface and the surface of a contact body that is in contact with the surface to press the surface and apply a current is configured to include a pressing body assembly that presses the contact body with a predetermined pressing force until the surface and the surface come into contact with each other to adjust the parallelism and, after that, presses the contact body with a pressing force that is stronger than the predetermined pressing force.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: September 5, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shigeto Akahori, Nobuo Kambara
  • Patent number: 9746960
    Abstract: The present invention provides a control module and a method operable in a touch-sensitive apparatus for measuring noise, wherein the touch-sensitive apparatus comprises a touch-sensitive module having a plurality of first electrodes and a plurality of second electrodes that intersect in multiple regions of the touch sensitive module, said method comprising the steps of: disconnecting the first electrodes from a driving voltage source; and acquiring a plurality of voltage values of noise by measuring a plurality of voltage signals associated with the second electrodes over a plurality of measurement cycles at a predetermined operating frequency during the first electrodes without a driving voltage.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: August 29, 2017
    Assignees: APEX MATERIAL TECHNOLOGY CORP., IMAGINATION BROADWAY LTD.
    Inventors: Ke-hao Ding, Zong-Bin Liao, Zhong-peng Qiu, Shang-Li Lee
  • Patent number: 9746572
    Abstract: Integrated buried utility locator systems, including a locator including a marker device excitation transmitter a buried utility locator along with one or more marker devices, are disclosed. In operation a marker device excitation signal is sent from the locator at least partially simultaneously to receiving and processing a buried utility signal.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: August 29, 2017
    Assignee: Seescan, Inc.
    Inventors: Mark S. Olsson, Stephanie M. Bench, Ray Merewether, Jan Soukup
  • Patent number: 9739804
    Abstract: Closure (1) for receiving a section of a conductor assembly (71), comprising a housing (25) closable around the conductor assembly (71), and an electrode assembly (200), which comprises a movable portion comprising a contact surface (150) for mechanically contacting the conductor assembly (71), and a sensing electrode (140), operable as a first capacitor electrode of a sensing capacitor for sensing a voltage of the conductor (80). The closure further comprises urging means (160) for urging the movable portion of the electrode assembly (200) towards the conductor assembly (71) for establishing a mechanical surface contact between the contact surface (150) and the conductor assembly (71), when the housing (25) is closed around the conductor assembly (71).
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: August 22, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Friedrich A. Busemann, Gerhard Lohmeier, Mark Gravermann
  • Patent number: 9739638
    Abstract: Each of a first yoke and a second yoke has an intermediate portion between one end portion and the other end portion of the yoke. When the first and second yokes are viewed in an opposing direction, a width of the intermediate portion of each yoke, which is measured in a direction perpendicular to a rotational direction, is smaller than a width of the one end portion and a width of the other end portion of the yoke and is constant along an entire extent of the intermediate portion in the rotational direction.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: August 22, 2017
    Assignee: DENSO CORPORATION
    Inventors: Naoaki Kouno, Tetsuji Yamanaka
  • Patent number: 9739816
    Abstract: The present disclosure describes a differential shield capacitive sensor design. The sensor design uses a differential measurement to measure capacitance and a pair of traces are used to differentially reject the response of the sensor traces and balance any parasitic capacitances. In some embodiments, the sensor design includes a differential sensor design on a bottom side of a flex circuit to differentially balance the environment and reject noise coupling to the sensor. The top side of the flex circuit can include a single ended design for proper environment sensing. The spatial arrangement and size of the sensors may vary depending on the application.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: August 22, 2017
    Assignee: ANALOG DEVICES, INC.
    Inventor: Adrian Anthony Flanagan
  • Patent number: 9741277
    Abstract: A test structure of a display panel is provided. The test structure is within a buffer display region which is between a display region and a non-display region of the display panel and includes a substrate, at least one signal line on the substrate, an insulation layer covering the signal line, a planar layer on the insulation layer, and an electrode layer on the planar layer. The planar layer has at least one opening exposing a portion of the insulation layer. The electrode layer has a display electrode portion on the planar layer, at least one test electrode portion connecting the insulation layer via the opening and electrically insulated from the signal line, and at least one ring-shaped trench surrounding the test electrode portion and exposing a portion of the planar layer. The display electrode portion surrounds the ring-shaped trench and is electrically insulated from the test electrode portion.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: August 22, 2017
    Assignee: E Ink Holdings Inc.
    Inventor: Chi-Ming Wu
  • Patent number: 9739844
    Abstract: Guidance and alignment systems are disclosed for wireless charging systems to assist in aligning the transmitter and receiver inductive power transfer (IPT) couplers. These systems guide positioning and alignment to provide sufficient coupling between the transmitter and receiver IPT couplers. Exemplary systems provide a magnetic field sensor, magnetic field generator, and magnetic vectoring to determine a position of an electric vehicle or a wireless charging base. In a magnetic vectoring system, an alignment system comprising at least three coils (or similar circuits) on a magnetically permeable substrate receives a positioning magnetic field including modulated information signals and processes the received signal to generate an output for determining a position of the positioning magnetic field source relative to the magnetic field sensor position.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: August 22, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Hans Peter Widmer, Lukas Sieber, Andreas Daetwyler
  • Patent number: 9739839
    Abstract: In a method of operating a stationary power plant connected to a power supply network, wherein upon the occurrence of a dynamic network fault in the power supply network, (in particular an electric short-circuit), at least one fault value is ascertained depending on a state value of at least one operating parameter of the power plant. The at least one fault value is associated with at least one component of the power plant, and a maintenance signal for the at least one component of the power plant is output depending on the at least one fault value.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: August 22, 2017
    Assignee: GE JENBACHER GMBH & CO OG
    Inventors: Jose Gomez, Erich Kruckenhauser
  • Patent number: 9733281
    Abstract: A voltage sensor system for sensing voltage in a conductor, the voltage sensor system including a first plate, a first electrode disposed a first distance away from the first plate, a second plate, a second electrode disposed a second distance away from the second plate, a control unit structured to control one of the first plate and the second plate to be grounded and the other of the first plate and the second plate to be electrically floating, and a differential amplifier electrically connected to the first electrode and the second electrode and being structured to output an output voltage that is proportional to a difference in voltage between the first electrode and the second electrode.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: August 15, 2017
    Assignee: EATON CORPORATION
    Inventors: Abhijeet Vikram Kshirsagar, Mark Allan Juds, Gayatri Shashikant Dharne
  • Patent number: 9735530
    Abstract: An apparatus for determining axial spacing between conductive rings of a slip ring assembly includes a signal generator that generates an incident signal, a plurality of conductive rings axially spaced along a shaft where the plurality of conductive rings includes a first conductive ring and a second conductive ring that are axially spaced at a first axial distance. The shaft and the plurality of conductive rings are submerged in a bath of a liquid or encased in an epoxy. A first twisted wire pair is electronically coupled at to the signal generator and to inputs of the first and second conductive rings. A second twisted wire pair is electronically coupled at one end to outputs of the first and second conductive rings. A method for determining axial spacing between conductive rings of a slip ring assembly is also disclosed.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: August 15, 2017
    Assignee: General Electric Company
    Inventors: Mario Joseph Arceneaux, Kurt Kramer Schleif, Donald W. Shaw
  • Patent number: 9733216
    Abstract: An inspection apparatus (100) for monitoring the structural integrity of a pipeline (101) comprising a central electromagnetic device (102) suitable for generating a magnetic field (106); a pair of magnetic conveyors (103?, 103?) connected to the central electromagnetic device (102) suitable for conveying the magnetic field (106) to the wall of the pipeline (101); a system of sensors (104) for revealing the magnetic field (106) conveyed on the pipeline (101); electric means (105) for feeding the inspection apparatus (100) and acquiring and storing data relating to the magnetic field (106) revealed; wherein said central electromagnetic device (102) is divided into various ferromagnetic elements (107) held together by a casing (109) made of polymeric material suitable for degrading after prolonged contact with a mixture of hydrocarbons. Method wherein an inspection apparatus according to the present invention is used for monitoring the structural integrity of a pipeline (101).
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: August 15, 2017
    Assignee: Eni S.p.A.
    Inventors: Alberto Giulio Di Lullo, Giordano Pinarello, Aldo Canova
  • Patent number: 9733313
    Abstract: In a method of operating a generator connected to a power supply network, in particular a synchronous generator, during a network fault in the power supply network, in particular during an electric short-circuit, electric excitation of the generator is at least temporarily reduced based on the value of at least one operating parameter of the generator prior to the network fault and/or during the network fault.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: August 15, 2017
    Assignee: GE JENBACHER GMBH & CO OG
    Inventors: Jose Gomez, Erich Kruckenhauser, Herbert Schaumberger
  • Patent number: 9726693
    Abstract: Provided is a probe member for a pogo pin, which is used for testing a semiconductor device, and at least a portion of which is inserted into a cylindrical body to be supported by an elastic member and an upper end of which contacts a terminal of the semiconductor device.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: August 8, 2017
    Assignee: ISC CO., LTD.
    Inventor: Jae-Hak Lee
  • Patent number: 9726708
    Abstract: The present invention relates to a device for detecting a partial discharge for a power transformer which detects an electromagnetic signal occurring due to faulty insulation. The device includes an antenna unit receiving electromagnetic waves, an insulator including the antenna unit, a metallic air-tight unit that seals a connector connected to the insulator and connecting a coaxial cable, and the coaxial cable exposed to the outside of the metallic air-tight unit. Thus, it is possible to enhance broadband properties through an internal conductor of a drain valve.
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: August 8, 2017
    Assignee: HYOSUNG CORPORATION
    Inventors: Jae-Ryong Jung, Eun-Tae Ryu, Kyung-Rok Hwang
  • Patent number: 9726724
    Abstract: An integrated circuit that includes a processor also has an on-chip current test circuit that indirectly measures quiescent current in the processor. A supply voltage pin of the integrated circuit receives a supply voltage from an external test unit to provide power to the processor. The on-chip test circuit measures a voltage change across the processor during a predetermined test period T when the processor is isolated from the supply voltage and the clock signal is stopped. The voltage change provides an indication of quiescent current corresponding to the processor.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: August 8, 2017
    Assignee: NXP USA, INC.
    Inventors: Xiuqiang Xu, Yin Guo, Shayan Zhang, Wanggen Zhang, Xu Zhang, Yizhong Zhang
  • Patent number: 9726695
    Abstract: An electrical current transducer is disclosed including a primary conductor bar for carrying the current to be measured, a magnetic core comprising a magnetic circuit gap, a magnetic field sensor having a circuit board and a magnetic field detector positioned in the magnetic circuit gap, and an insulating housing surrounding the magnetic core and magnetic field sensor. The primary conductor bar has connection terminal ends extending outside of the housing configured for connection to an external primary conductor. The primary conductor bar further includes a core passage section having a reduced width in comparison to the connection terminal ends extending outside of the housing thereby providing an indent within which the magnetic field detector is positioned such that a central passage of the magnetic core has a width less than the width of the primary conductor connection ends.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: August 8, 2017
    Assignee: LEM Intellectual Property SA
    Inventors: Gauthier Plagne, Christophe Delmaere