Patents Examined by Tung X. Nguyen
  • Patent number: 11187745
    Abstract: An example method of stabilizing a voltage at a device under test (DUT) includes identifying one or more characteristics of a deviation in a first voltage to appear at the DUT. The deviation may result from a digital signal and a concomitant transient current in the DUT. The digital signal may be part of a test flow to be sent over one or more test channels of automatic test equipment (ATE) to the DUT. The one or more characteristics may be identified prior to sending the test flow to the DUT. The method also includes generating a second voltage to apply to the DUT. The second voltage may be based on the one or more characteristics and being shaped to reduce the deviation.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: November 30, 2021
    Assignee: TERADYNE, INC.
    Inventors: Jason A. Messier, Bryce M. Wynn, Anja Deric
  • Patent number: 11187731
    Abstract: A power glitch signal detection circuit, a security chip and an electronic apparatus are disclosed. The power glitch signal detection circuit includes: a voltage sampling module configured to acquire and output a sampled voltage of a power supply voltage; a detection unit array, including multiple MOS transistors with various threshold voltages, wherein first terminals of the multiple MOS transistors are connected to the sampled voltages, and second terminals of the multiple MOS transistors are connected to the power supply voltage; a switch array, including multiple switches corresponding to the multiple MOS transistors; and a signal generation circuit, wherein drain terminals of the multiple MOS transistors are connected to the signal generation circuit through the multiple switches respectively.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: November 30, 2021
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventors: Jianfeng Xue, Jiang Yang
  • Patent number: 11181556
    Abstract: Portable device for a contactless measurement of a current passing through an electrical conductor, the device including a measuring module and a processing module, the measuring module, configured to be held by an operator in contact with the conductor in a plane substantially orthogonal to this conductor and without clamping this conductor, including one or two pluralities of magnetic field sensors, and the processing module being configured to perform a determined linear combination of the plurality of signals delivered by one or the two pluralities of magnetic field sensors, so as to perform an angular spatial filtering isolating the current to be measured from other disturbing currents passing through other conductors.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: November 23, 2021
    Assignee: CHAUVIN ARNOUX
    Inventors: Francisque Pion, Marouane Ait El Faqir
  • Patent number: 11181572
    Abstract: A wafer testing system may comprise a chuck, a wafer carrier, a cathode plate, and a probe card. The chuck may be configured to hold the wafer carrier. The wafer carrier may be configured to hold a wafer on a surface of the wafer carrier, wherein the surface of the wafer carrier comprises one or more contact features protruding from the surface of the wafer carrier. The cathode plate may be configured to provide an electrical connection between the wafer carrier and the probe card, wherein a portion of a surface of the cathode plate is configured to be disposed on the one or more contact features of the wafer carrier. The probe card may be configured to test, using one or more probes associated with the probe card, the wafer when the wafer is on the surface of the wafer carrier.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: November 23, 2021
    Assignee: Lumentum Operations LLC
    Inventors: Yuanzhen Zhuang, Lucas Morales, Raman Srinivasan, Sean Burns, Siu Kwan Cheung, Tian Shi, Tao Li
  • Patent number: 11181576
    Abstract: An electronic component handling apparatus includes: a moving device that presses a device under test (DUT) against a socket of a test head. The moving device includes: a pusher that contacts the DUT; and a heater that heats the DUT through the pusher. The pusher includes: an internal space; and a first flow path that communicates with the internal space. Fluid from the test head is supplied to the internal space through the first flow path.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: November 23, 2021
    Assignee: ADVANTEST Corporation
    Inventors: Yasuyuki Kato, Yuya Yamada, Shintaro Takaki, Hiroki Hosogai
  • Patent number: 11175322
    Abstract: Certain aspects and features include a system and method for energy measurement in electric meter systems. In an example, an electric meter receives an Alternating Current (A/C) signal. The electric meter includes a current measurement device that is configured to obtain a current measurement of a current of the A/C signal. The current measurement includes a fundamental frequency component and a noise component. The electric meter receives a current measurement signal from the current measurement device and filters the noise component from the current measurement, thereby creating a filtered current measurement signal. When the filtered current measurement signal is greater than a starting current threshold, the electric meter calculates an energy consumption measurement.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: November 16, 2021
    Assignee: Landis+Gyr Innovations, Inc.
    Inventors: David Stenberg, Frank J. Boudreau, Jr.
  • Patent number: 11176856
    Abstract: A display device and a method of inspecting signal lines of the display device facilitating inspection of a large number of signal lines are disclosed. According to one embodiment, the display device includes: a substrate; a first signal line disposed in a display area of the substrate; and a first inspection line disposed in a non-display area of the substrate and connected to the first signal line. The first inspection line includes: a first line connected to the first signal line; a second line disposed on a layer substantially the same as a layer on which the first line is disposed, the second line spaced apart from the first line; and a third line disposed on a layer different from the layer on which the first line and the second line are disposed with an insulating layer interposed therebetween, the third line overlapping at least a portion of the first line and a portion of the second line.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: November 16, 2021
    Inventors: Donghee Shin, Hyungjin Song, Byoungsun Na, Yoomi Ra, Soohong Cheon
  • Patent number: 11175337
    Abstract: An over-the-air measurement system for performing over-the-air measurements on a device under test is described. The measurement system comprises a measurement device having several measurement antennas, several waveguides, wherein at least one waveguide is assigned to each measurement antenna, several waveguide-to-cable adapters, and a positioning unit assigned to the measurement antennas. The number of the waveguide-to-cable adapters is at least identical to the number of the measurement antennas. The positioning unit is configured to move the measurement antennas with respect to the waveguide-to-cable adapters.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: November 16, 2021
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Christoph Toben-Heiken, Christian Riedel, Corbett Rowell
  • Patent number: 11169179
    Abstract: A current sensing circuit having self-calibration includes two leads, a sensing element having a sensing resistance, and a sensing and calibration circuit. The sensing and calibration circuit senses and calibrates a sensing voltage of the sensing element, and senses a sensing current through the sensing element according to the sensing resistance and the sensing voltage, to generate a current sensing output signal. The sensing and calibration circuit includes two pads, a V2I circuit, a current mirror circuit and an I2V circuit. The sensing element has a first temperature coefficient (TC). The TC and/or the resistance of an adjusting resistor in the V2I circuit and an adjusting resistor in the I2V circuit are determined according to the first TC, such that the TC of the current sensing output signal is equal to 0.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: November 9, 2021
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Isaac Y. Chen, Chien-Fu Tang, Hsin-Yi Wu, Kai-Chuan Chan, Yu-Lin Yang
  • Patent number: 11169199
    Abstract: A method and device for online insulation monitoring of a motor are applied to an inverter-driven motor system. The method includes: measuring phase-to-ground voltages of three-phase inlet lead ends of a motor; acquiring leakage currents of the three-phase inlet lead ends of the motor; acquiring a voltage common-mode component, a voltage differential-mode component, a current common-mode component and a current differential-mode component from the phase-to-ground voltages and the leakage currents; and acquiring ground-wall insulation equivalent capacitance and phase-to-phase insulation equivalent capacitance according to the components. A ground-wall insulation monitoring result and a phase-to-phase insulation monitoring result are distinguished from each other by the acquired ground-wall insulation equivalent capacitance and phase-to-phase insulation equivalent capacitance, such that two kinds of insulation are monitored respectively.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: November 9, 2021
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Pinjia Zhang, Dayong Zheng, Hongdong Zhu
  • Patent number: 11169203
    Abstract: Example systems for determining a configuration of a test system execute operations that include receiving first parameters specifying at least part of an operation of a test system; receiving second parameters specifying at least part of a first configuration of the test system; determining a second configuration of the test system based, at least in part, on the first parameters and the second parameters, with the second configuration being determined to impact a cost of test of the test system; generating, by one or more processing devices, data for a graphical user interface representing information about the second configuration and the cost of test; and outputting the data for the graphical user interface for rendering on a display device.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: November 9, 2021
    Assignee: TERADYNE, INC.
    Inventor: Randall T. Kramer
  • Patent number: 11162980
    Abstract: A probe card in an automated test equipment (ATE) is disclosed. The probe card may be a portion of a vertical-type probe card assembly in which pads on a circuit board are contacted by probe pins, with vertical vias in the circuit board interconnecting various conductive elements. Disclosed herein is a probe card having ground vias in a coaxial arrangement around a signal via that provide electromagnetic shielding to a signal via to reduce crosstalk between adjacent signal vias.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: November 2, 2021
    Assignee: Teradyne, Inc.
    Inventor: Brian Brecht
  • Patent number: 11162983
    Abstract: An absence of voltage indicator has an isolation circuit, an FM modulator attached to the isolation circuit, a reference oscillator, and a mixer attached to the reference oscillator and the FM modulator, wherein the output of the mixer is the difference of the two signals. In one embodiment, the FM modulator includes a variable capacitor which varies in response to a voltage in parallel to a fixed capacitor and an inductor in parallel to the capacitors.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: November 2, 2021
    Assignee: Panduit Corp.
    Inventor: Masud Bolouri-Saransar
  • Patent number: 11162989
    Abstract: A measurement device with improved electrical strength comprises an input for receiving an input signal as well as a measurement circuit connected with the input. The measurement circuit has at least one component. The measurement device also comprises an electrical interface provided in addition to the input. The measurement device further comprises at least one internal enclosure that encloses the component within the measurement device, thereby improving the electrical strength of the measurement device.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: November 2, 2021
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Dirk Zimmermann, Franz Strasser, Martin Wirnshofer, Martin Welz
  • Patent number: 11162996
    Abstract: A probing apparatus includes a carrier having an opening, a supporter disposed on the carrier in a way that its bottom surface faces toward the carrier, its top surface for disposition of a wafer, and its light permeable portion allowing light to pass through the top and bottom surfaces corresponding in position to the opening, an air heating device having a covering plate and an air supply unit, and a probing device having a probe protruding out of the bottom surface of the air heating device. A thermal air source provides thermal air to a heating space between the bottom surface of the air heating device and the top surface of the supporter through an air supply passage of the air supply unit. The probing apparatus can test light emitting efficiency of a light emitting chip in the wafer and heat the chip at the same time.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: November 2, 2021
    Assignee: MPI CORPORATION
    Inventors: Wen Pin Chuang, Yi Ching Lo, Hao Duan
  • Patent number: 11162982
    Abstract: A current detection device includes a plane-shaped first coil pattern having a winding number of at least two or more, a magnetic field detection element isolated from the first coil pattern in a direction orthogonal to a plane of the first coil pattern, and arranged to receive a magnetic field formed by the first coil pattern, a driving circuit configured to drive the magnetic field detection element and output an output signal, a second coil pattern, a first substrate on the first coil pattern, a second substrate on the second coil pattern, and a third substrate on the magnetic field detection element. The magnetic field detection element is provided between the first coil pattern and the second coil pattern.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: November 2, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventors: Jia Liu, Toshihiro Tsujimura
  • Patent number: 11162985
    Abstract: An electronic measuring device includes a main printed circuit assembly and one or more channel modules. At least one channel module includes a channel printed circuit board and a first insulating housing that defines a cavity covering at least part of electrical elements mounted on the channel printed circuit board. A first conductive shielding frame is placed on the first insulating housing and is separated from the channel printed circuit board by the first insulating housing. The first conductive shielding frame covers the electrical elements mounted on the channel printed circuit board. A second insulating housing sandwiches the first conductive shielding frame between the second insulating housing and the first insulating housing which lengthens an electrical path from the first conductive shielding frame to the channel printed circuit board.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: November 2, 2021
    Assignee: Fluke Corporation
    Inventors: Yinhong Yang, Jinbo He, Zhangyan Zhao
  • Patent number: 11156643
    Abstract: A current sensor including a measurement circuit and an electrical conductor having at least one first measurement path defined by a first pickup contact and a second pick-up contact at which a first voltage can be detected across the first measurement path, a first connection contact for electrically contacting a connection element, a second connection contact for electrically contacting a battery pole terminal, and a current feed contact for electrically contacting a device for providing a calibration current. The first measurement path is in series between the first connection contact and the second connection contact. A calibration current supplied at the current feed contact induces a current density distribution in the first measurement path, which converges with a current density distribution in the first measurement path, induced by a load current of equal current intensity supplied at the first connection contact.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: October 26, 2021
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Martin Schramme, Ralf Schröppel, Andreas Aumer
  • Patent number: 11156585
    Abstract: Disclosed is a method of detecting mixed mode corrosion of a turbine airfoil. The method includes heat treating the turbine airfoil at a temperature of 1600 to 2100° F. in a Ni/Co oxide reducing atmosphere; and scanning the heat treated turbine airfoil with a magnetometer to determine the presence of mixed mode corrosion, wherein the turbine airfoil comprises a nickel superalloy and has internal passages.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: October 26, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Xuan Liu, Andrew DeBiccari, Zhong Ouyang, Christopher J. Bischof, William J. Brindley
  • Patent number: 11150279
    Abstract: A circuit includes a switching circuit including a first switch and a second switch. A current sensing circuit is coupled to the switching circuit to sense a first current through the first switch and to generate a first sensed current signal based on the sensed first current, and configured to sense a second current through the second switch and to generate a second sensed current signal based on the sensed second current. An output circuit is coupled to the current sensing circuit and is configured to generate a failure signal based on the first sensed current signal and the second sensed current signal.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: October 19, 2021
    Assignee: STMicroelectronics S.r.l.
    Inventors: Vanni Poletto, Riccardo Miglierina, Antonio Davide Leone, Sergio Lecce