Patents Examined by Melissa J Koval
  • Patent number: 10353003
    Abstract: Apparatus (103) suitable for determining the resistance and inductance of an electric motor (101) estimates the phase shift between a voltage applied to the motor and motor current. Estimation of the phase shift employs a heterodyne technique. The measured motor current is conditioned prior to heterodyning in a mixer 203 in order to reduce the effects of nonlinearities introduced by a voltage source inverter (102) which supplies the motor (101) with a voltage. A value for impedance may be calculated as a ratio of a voltage applied to the motor and the motor current. The resistance and inductance may then be calculated from the impedance and phase shift calculations. In cases where the voltage applied to the motor cannot be directly measured but only the voltage supply to the voltage source inverter 102 is known, a value for impedance may be determined based on a ratio of a reconstructed voltage signal having a phase angle equal to that of the motor current and the motor current.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: July 16, 2019
    Assignee: NXP USA, Inc.
    Inventor: Marek Stulrajter
  • Patent number: 10352811
    Abstract: A cold cathode ionization vacuum gauge includes an extended anode electrode and a cathode electrode surrounding the anode electrode along its length and forming a discharge space between the anode electrode and the cathode electrode. The vacuum gauge further includes an electrically conductive guard ring electrode interposed between the cathode electrode and the anode electrode about a base of the anode electrode to collect leakage electrical current, and a discharge starter device disposed over and electrically connected with the guard ring electrode, the starter device having a plurality of tips directed toward the anode and forming a gap between the tips and the anode.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: July 16, 2019
    Assignee: MKS Instruments, Inc.
    Inventors: Gerardo A. Brucker, Timothy C. Swinney, Brandon J. Kelly, Alfred A. Funari, Michael N. Schott, Kristian S. Schartau
  • Patent number: 10353017
    Abstract: A Hall effect sensor system for detecting magnetic fields includes a Hall effect sensor having a central body with a substantially square shape, a first pair of outwardly oriented and opposing arms projecting outwardly from opposing sides of the central body and a second pair of outwardly oriented and opposing arms projecting outwardly transverse from the first pair of arms to form a cross-shape. Each of the arms has a plurality of fingers projecting outwardly therefrom and electrodes are provided on the fingers. In operation, at least two electrodes on the first pair of opposing arms provide a path for bias current through the Hall effect sensor. An electrode on each of the second pair of opposing arms senses voltage formed in the Hall effect sensor by a magnetic field and provides an output to an amplifier.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: July 16, 2019
    Assignee: The Timken Company
    Inventor: Lei Wang
  • Patent number: 10352681
    Abstract: To provide a displacement detection device that detects a displacement of a measuring object housed in a casing without changing the design of the casing or while suppressing the design change of the casing. A displacement detection device includes a pair of magnets arranged outside an injector body housing a needle with a space between the magnets and forming a magnetic field in the space, a soft magnetic material connected to the needle inside the injector body and displaced in accordance with the displacement of the needle and disposed in the magnetic field formed by the pair of magnets, and a sensor disposed outside the injector body and in the magnetic field formed by the pair of magnets, and detecting a change in magnetic flux density in accordance with the displacement of the soft magnetic material.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: July 16, 2019
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventor: Takumi Yoshiya
  • Patent number: 10353032
    Abstract: In some embodiments, an apparatus and a system, as well as a method and article of manufacture, may operate to measure nuclear magnetic resonance relaxation times in a fluid. Further activity may include determining a viscosity of the fluid based on at least one ratio of the relaxation times, and operating a controlled device based on the viscosity. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: July 16, 2019
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Magdalena Traico Sandor, Songhua Chen
  • Patent number: 10352969
    Abstract: Systems and methods described herein are directed towards integrating a shield layer into a current sensor to shield a magnetic field sensing element and associated circuitry in the current sensor from electrical, voltage, or electrical transient noise. In an embodiment, a shield layer may be disposed along at least one surface of a die supporting a magnetic field sensing element. The shield layer may be disposed in various arrangements to shunt noise caused by a parasitic coupling between the magnetic field sensing element and the current carrying conductor away from the magnetic field sensing element.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: July 16, 2019
    Assignee: Allegro MicroSystems, LLC
    Inventors: Shaun D. Milano, Bryan Cadugan, Michael C. Doogue, Alexander Latham, William P. Taylor, Harianto Wong, Sundar Chetlur
  • Patent number: 10345346
    Abstract: Methods and apparatus are provided for detection of voltage levels of RF signals. A first voltage correction is provided based on a thermal voltage and a second voltage correction is provided based on a voltage difference between a detection transistor, used for the rectification of the RF signal, and a reference transistor, to which the RF signal is not supplied. Based on the first and second voltage corrections, a more accurate detector with greater linearity may be obtained. In an embodiment, the second voltage correction may be generated proportional to a hyperbolic tangent of the voltage difference between two transistors, obtained using an additional pair of transistors configured as a differential pair. Applications include the control of a power amplifier output in a wireless device.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: July 9, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventor: Edward John Wemyss Whittaker
  • Patent number: 10345251
    Abstract: A portable nuclear magnetic resonance (NMR) device and a method of determining an oil concentration in water are disclosed. The portable NMR device can include a magnetic field assembly to carry out NMR measurements of water. The portable NMR device can include a housing to at least partly surround the magnetic field assembly and to substantially eliminate a magnetic fringe field generated by the magnetic field assembly outside the housing. The portable NMR device can also include an analysis module to receive the NMR measurement of the water and to determine, based on the received NMR measurements of the water, the oil concentration in the water.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: July 9, 2019
    Assignee: ASPECT IMAGING LTD.
    Inventor: Uri Rapoport
  • Patent number: 10345338
    Abstract: An electronic device includes a housing, which is sized and shaped to fit snugly over a connector containing first electrical contacts at an end of a cable. The electronic device further includes second electrical contacts within the housing and test circuitry. The second electrical contacts are configured and positioned to mate with the first electrical contacts when the housing is fitted over the connector. The test circuitry is contained within the housing and coupled to the second electrical contacts and configured to test a functionality of the cable.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: July 9, 2019
    Assignee: Biosense Webster (Israel ) Ltd.
    Inventor: Avigdor Rosenberg
  • Patent number: 10345474
    Abstract: An anti-saturation device for a ground magnetic resonance signal amplifying circuit has a receiving coil connected with a band-pass filter circuit through a pre-amplifying circuit and a programmable amplifying circuit. The programmable amplifying circuit is connected with an AD acquisition card through the band-pass filter circuit. The band-pass filtering circuit is connected with a computer through the AD acquisition card, and the AD acquisition card is connected with an emitting system through the computer. An automatic amplification factor adjusting module is embedded into a nuclear magnetic resonance detector, and can also directly replace a receiving amplification circuit of the nuclear magnetic resonance detector to work independently.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: July 9, 2019
    Assignee: Jilin University
    Inventors: Tingting Lin, Yang Zhang, Xu Shu, Jun Lin, Ling Wan, Jing Zhao, Xin Cai
  • Patent number: 10345091
    Abstract: A device has magnetic sensors and magnets in an array on a flexible substrate. Each magnetic sensor is sensitive to immediately proximate magnets. At least one controller evaluates magnetic sensor signals from the magnetic sensors produced in response to deformation of the flexible substrate.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: July 9, 2019
    Assignee: CROCUS TECHNOLOGY INC.
    Inventors: Bertrand F. Cambou, Ljubisa Ristic, Jian Wu, Douglas Lee, Ted Stokes, Ken Mackay
  • Patent number: 10345361
    Abstract: Disclosed embodiments relate to a monitoring system for detecting an error of a harmonic filter in a high voltage direct current (HVDC) transmission system is disclosed. In some embodiments, the monitoring system comprises a harmonic filter including one or more capacitor units, a monitoring sensor unit sensing a voltage of at least one of the one or more capacitor units, and, a control unit monitoring a voltage error of the at least one capacitor unit using the sensing result.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: July 9, 2019
    Assignee: LSIS CO., LTD.
    Inventor: Yong Kil Choi
  • Patent number: 10345420
    Abstract: A method and a system for determining system errors and power values for the calibration of a network analyzer (2) containing several test ports (11, . . . , 1i, 1j, . . . , 1n) connects the individual test ports (11, . . . , 1i, 1j, . . . , 1n) in each case sequentially to a short calibration standard (3), to an open calibration standard (4) and to a power detector (5), and measures a signal reflected from the short calibration standard (3), from the open calibration standard (4) and from the power detector (5) in the case of an excitation of the respective test port with a measured excitation signal. Following this, system errors for every test port (11, . . . , 1i, 1j, . . . , 1n) are determined from the respectively measured excitation signal and the respectively measured reflected signals, and, finally, the power value of the excitation signal is measured at least at one test port (11, . . . , 1i, 1j, . . . , 1n) by the power detector (5) connected in each case to this test port (11, . . . , 1i, 1j, . .
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: July 9, 2019
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventor: Martin Leibfritz
  • Patent number: 10345405
    Abstract: A radiofrequency (RF) coil for use in a magnetic resonance imaging (MRI) system using a plurality of RF coils includes a main loop coil including a plurality of electrical conductors, and an auxiliary loop coil disposed around the plurality of electrical conductors and including a plurality of electrical conductors.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: July 9, 2019
    Assignees: Samsung Electronics Co., Ltd., Samsung Life Public Welfare Foundation
    Inventors: Kyoungnam Kim, Yeon Hyeon Choe
  • Patent number: 10345393
    Abstract: A power loss measuring system is provided for measuring power loss in a harmonic filter included in a High Voltage Direct Current (HVDC) transmission system. The power loss measuring system may include a harmonic filter, a monitoring sensing unit, and a controller. The harmonic filter may include a plurality of elements. The monitoring sensor unit may sense variation in impedance of each of the plurality of elements. The controller may obtain power loss in the harmonic filter using amount of variation in impedance of each of the plurality of elements.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: July 9, 2019
    Assignee: LSIS CO., LTD.
    Inventor: Yong Kil Choi
  • Patent number: 10345388
    Abstract: A method for screening a lithium ion battery is provided. A number of lithium ion batteries are galvanostatically discharged a to an inflection point voltage at an inflection point of a discharge curve at a first constant current I1. The number of lithium ion batteries are rested for a first rest time T1 to raise an open circuit voltage of the number of lithium ion batteries to U1. U1 is greater than the inflection point voltage. The number of lithium ion batteries are galvanostatically discharged to the inflection point voltage at a second constant current I2, in which I2<<I1. The number of lithium ion batteries are rested for a second rest time T2 and the batteries are screened based on a self-discharge of the number of lithium ion batteries.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: July 9, 2019
    Assignees: JIANGSU HUADONG INSTITUTE OF LI-ION BATTERY CO., LTD, TSINGHUA UNIVERSITY
    Inventors: Yong Yang, Hong-Sheng Zhang, Xiang-Ming He, Jian-Jun Li, Li Wang, Guo-Hua Li, Tuan-Wei Li, Shu-Hui Wang
  • Patent number: 10338110
    Abstract: A source-measure unit (SMU) may be implemented with digital control loops and circuitry to digitally compensate for the impact of input bias current on current measurements. One or more buffers having well-defined characteristics with respect to certain parameters which may affect the current measurements may be used in the output signal path of the SMU where a shunt voltage developed across a current sense element is measured. For example, the buffers may conduct/develop respective input bias currents that change perceptibly and predictably with temperature. By measuring the temperature and adjusting a control voltage—which is used to develop the shunt voltage—according to the temperature measurements, the impact of the input bias current[s] on the current measurement[s] may be reduced to negligible levels and/or may be eliminated.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: July 2, 2019
    Assignee: National Instruments Corporation
    Inventors: Pablo E. Limon-Garcia-Viesca, Christopher G. Regier
  • Patent number: 10338115
    Abstract: A digital measurement system includes an oscillator, a mixer, and a controller coupled to each other. The oscillator provides a reference signal having a second frequency. The mixer generates a down-converted signal based on the output signal and the reference signal. The controller then determines a characteristic of the output signal (e.g., frequency or phase) based on the down-converted signal. An analog measurement system includes a filter having a center frequency, a rectifier, and a controller. The filter filters the output signal and the rectifier rectifies the filtered signal. The controller samples the rectified signal and determines a characteristic of the output signal based on the level of the rectified signal. The reference signal controller may adjust a characteristic of the output signal based on the determined frequency and/or phase of the output signal.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: July 2, 2019
    Assignee: Covidien LP
    Inventors: Wayne L. Moul, Robert J. Behnke, II, Scott E. M. Frushour, Jeffrey L. Jensen
  • Patent number: 10338148
    Abstract: An object of the present invention is to provide a wireless communication technique which can measure a physical state of the measurement object with high accuracy and can transmit the measurement result rapidly. The communication device according to the present invention wirelessly transmits the measurement result during a first time slot, and starts measurement during a second time slot which differs from the first time slot (see FIG. 3).
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: July 2, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Kei Sakabe, Takanori Yamazoe
  • Patent number: 10338181
    Abstract: A radio frequency (RF) coil assembly for magnetic resonance imaging includes a transmit only (Tx only) RF coil to apply an RF signal to an object, and a receive only (Rx only) RF coil to receive a magnetic resonance signal from a region of interest of the object excited by the applied RF signal. The Tx only RF coil and the Rx only RF coil are disposed such that a first center of the Tx only RF coil and a second center of the Rx only RF coil are spaced apart from each other by a distance identical to a distance between a first peak point of a first magnetic field generated by the Tx only RF coil and a second peak point of a second magnetic field generated by the Rx only RF coil.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: July 2, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyoung-nam Kim, Jung-hee Lee, Geun-ho Im