With Comparison Or Difference Circuit Patents (Class 324/705)
  • Patent number: 10317292
    Abstract: A two-wire resistance temperature detector (RTD) includes an RTD sensor having a sensor resistance that changes in correspondence with changes in the temperature of the RTD sensor. The two-wire RTD additionally includes a pair of leads electrically coupling the RTD sensor to a control unit having a pulse generator for generating a first current pulse and a second current pulse. The two-wire RTD also includes a switch electrically coupled between the pair of leads and operable in an open state when subjected to the first current pulse and operable in a closed state when subjected to the second current pulse. The open state causes the first current pulse to flow through the pair of leads and the RTD sensor. The closed state causes the second current pulse to flow through the pair of leads. The switch enables the control unit to determine the sensor resistance and corresponding sensor temperature.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: June 11, 2019
    Assignee: The Boeing Company
    Inventors: Amir Liaghati, Jordan Miller, David Rushing, John Blumer
  • Patent number: 10241141
    Abstract: An apparatus for measuring resistance value may include a reference resistance including one end supplied with a first voltage and the other end connected with a target resistance; a variable voltage generating circuit for generating the first voltage varied according to temperature and supplying the first voltage to the one end of the reference resistance; and a signal processor for outputting resistance of the target resistance corresponding to a voltage outputted to the other end of the reference resistance.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: March 26, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Sang Hyeok Yang
  • Patent number: 10035539
    Abstract: Embodiments of the present disclosure set forth a technique for modifying different vehicle parameters based on bimanual input. The technique includes acquiring sensor data associated with a first finger and a second finger of a user. The technique further includes analyzing the sensor data to determine a first location of the first finger and a second location of the second finger. The technique further includes selecting a first vehicle parameter based on the first location of the first finger, and modifying the first vehicle parameter based on the second location of the second finger.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: July 31, 2018
    Assignee: HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    Inventors: Davide Di Censo, Stefan Marti
  • Patent number: 9964573
    Abstract: A characteristic impedance of an electric transmission line is measured by way of extraction. In the method, a first probe and a second probe are provided, wherein the first probe and the second probe are separable and independently operable probes. A first characteristic impedance of a first circuit where a first terminal of the first probe and a first terminal of the second probe are directly interconnected to each other is first measured. Then a second characteristic impedance of a second circuit where the first terminal of the first probe and the first terminal of the second probe are connected to opposite terminals of the electric transmission line, respectively, is measured. The characteristic impedance of the electric transmission line can then be obtained according to the first characteristic impedance and the second characteristic impedance.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: May 8, 2018
    Assignee: ALPHA NETWORKS INC.
    Inventors: Chun-Hsueh Chu, Rong-Fa Kuo
  • Patent number: 9797937
    Abstract: A carbon nanofiber aggregate (CNFA) system and method provides self-sensing capabilities that can be used to detect strain, moisture, and temperature changes. The CNFA may include cement, aggregate, silica fume, high-range water reducer (HRWR), and/or carbon nanofibers. The metal meshes in the CNFA may be utilized to monitor the electric properties of the CNFA to detect strain, moisture, and temperature changes. The CNFA may be embedded in concrete structures to allow detection of strain, moisture, and temperature changes that may cause damage to structures. Several metal meshes may be embedded in the CNFA.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: October 24, 2017
    Assignee: UNIVERSITY OF HOUSTON
    Inventors: Yi-Lung Mo, Rachel Howser, Hermant Dhonde, Gangbing Song
  • Patent number: 9448613
    Abstract: A voltage control circuit in an electronic device receives an actuator identification signal from a personality module of an actuator in the electronic device. The voltage control circuit determines, based on the actuator identification signal, an operating voltage for the actuator and providing a drive signal at the operating voltage to the actuator.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: September 20, 2016
    Assignee: Amazon Technologies, Inc.
    Inventors: Edward Albert Liljegren, Hanh Thuy Phan, David Charles Buuck, John Aaron Zarraga
  • Patent number: 9429614
    Abstract: A system to detect whether a potentiometer is in an open circuit condition is disclosed. The system includes a potentiometer having an adjustable arm. A low pass filter is coupled to the adjustable arm. A controller has a first driver output coupled to a voltage input of the potentiometer and a second driver output coupled to the adjustable arm. The controller determines failure of the potentiometer by setting the first driver output to a high value. A first sample voltage from the adjustable arm is read and determined whether the first sample voltage is between a high and a low threshold value. The first driver output is set to a low value. A voltage is applied to the adjustable arm via the second driver output. A second sample is read from the adjustable input and it is determined whether the second sample is below an arm threshold value.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: August 30, 2016
    Assignee: SCHNEIDER ELECTRIC USA, INC.
    Inventor: Kevin Jefferies
  • Patent number: 9417099
    Abstract: In an aspect, a pinch sensor is provided, comprising: an elongate non-conductive casing enclosing first, second, and third elongate conductive electrodes; the first and second electrodes being separated by a portion of the casing, a capacitance between the first and second electrodes changing when an obstacle approaches the first electrode to provide a proximity indication of the obstacle to the pinch sensor; and, the second and third electrodes being separated by an air gap formed in the casing, a resistance between the second and third electrodes changing when the second and third electrodes come into contact upon compression of the casing by the obstacle to provide a contact indication of the obstacle with the pinch sensor.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: August 16, 2016
    Assignee: MAGNA CLOSURES INC.
    Inventors: Liviu Bolbocianu, Rade Isailovic, Mirko Pribisic, Thomas Mellary, Alex Porat
  • Patent number: 9326693
    Abstract: A method, consisting of receiving respective electrocardiograph (ECG) signals from body-surface electrodes at respective locations in proximity to a heart of a subject. The ECG signals may be processed to generate respective signal parameters characteristic of positions of the body-surface electrodes with respect to the heart, and the respective locations may be adjusted so as to achieve a specified geometrical relationship between the body-surface electrodes and the heart in response to the respective signal parameters.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: May 3, 2016
    Assignee: Biosense Webster (Israel) Ltd.
    Inventor: Shaul Haim Raz
  • Patent number: 9316680
    Abstract: An exemplary embodiment relates to a method for detecting a failure on a differential bus. The method may include: determining an allowed voltage range of the differential bus based on a minimum load and a maximum load; comparing a differential bus voltage with the allowed voltage range; and determining a failure state in case the differential bus voltage is outside the allowed voltage range.
    Type: Grant
    Filed: July 6, 2013
    Date of Patent: April 19, 2016
    Assignee: INFINEON TECHNOLOGIES AG
    Inventor: Daniela Trombetti
  • Patent number: 9285403
    Abstract: Electrical resistance of a heated component is determined for temperature control and monitoring. A voltage-representation signal, which is proportional to a voltage across a heater component, is received. A current-representation signal, which is proportional to an electrical current passing through the heater component is received and modulated to generate a resistance-representation signal that is proportional to an amount of modulation that makes the current-representation signal approximately equal to the voltage-representation signal. The modulation may be pulse-width modulation. The resistance-representation signal may be generated based on a signal that is proportional to the percent duty cycle of the pulse width modulation. A difference of the resistance-representation signal and the voltage-representation signal may be integrated to provide an error signal adapted to cause the modulation to be proportional to an electrical resistance of the heater component.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: March 15, 2016
    Assignee: Continental Automotive Systems, INC
    Inventor: Perry Robert Czimmek
  • Patent number: 9240821
    Abstract: A charging station performs communications by use of a superimposing/separating unit configured by connecting a capacitor, a coupling transformer and a capacitor to branch lines branching out respectively from a control cable and a grounded cable. An electric vehicle performs communications by use of a superimposing/separating unit configured by providing a coupling transformer to the control cable. A capacitor is also connected between the control cable and the grounded cable. Communications are allowed by the configuration of a closed loop circuit comprising the control cable, the branch line, the capacitor, a primary coil of the coupling transformer, the capacitor, the branch line, the grounded cable, the capacitor, and a primary coil of the coupling transformer.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: January 19, 2016
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., AUTONETWORKS TECHNOLOGIES, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yousuke Takata, Yutaka Komatsu, Takeshi Hagihara, Hiroya Andoh, Yuta Ochiai, Ryuichi Kamaga, Atsushi Iwai, Yukihiro Miyashita, Nobuyuki Nakagawa
  • Patent number: 9182430
    Abstract: A device for measuring the value of a resistor has a first RC element with a first time constant and a second RC element with a second time constant. The first RC element has a first capacitor and a resistor. The second RC element has a second capacitor and the resistor to be measured. An evaluation circuit charges the first and second capacitors to a first and a second voltage, respectively, and initiates their discharge. The evaluation circuit measures the time that elapses from the start of the discharge to the instant at which the voltages across the capacitors are equal, and determines the value of the resistor from the values. In the event that the first time constant is larger than the second time constant, the first voltage is smaller than the second voltage, and vice versa.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: November 10, 2015
    Assignee: Continental Automotive GmbH
    Inventor: Volker Hertes
  • Patent number: 9147444
    Abstract: A voltage regulator including an over-drive circuit and a control circuit is illustrated. The over-drive circuit receives a first voltage signal output from a sensing amplifier in a DRAM circuit, and regulates the first voltage signal according to an over-drive signal. The a control circuit electrically connected to the over-drive circuit receives a sense signal, and outputs the over-drive signal according to the sense signal, wherein the sense signal is asserted when a bit line in the DRAM circuit is sensed that an restoring and operation is performed. The over-drive signal goes down to a level of a second voltage signal from a current level thereof dependent on an external power merely when the sense signal is asserted but has not been asserted for a delay time, or otherwise, the over-drive signal is equal to the external power.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: September 29, 2015
    Assignee: ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC.
    Inventor: Chung-Zen Chen
  • Publication number: 20150130483
    Abstract: An amplifying circuit comprises a differential input stage having a first input terminal, a second input terminal, and an intermediate node, wherein the differential input stage is configured to generate a differential current flowing through the intermediate node in response to an input voltage difference between the first and second input terminals. The amplifying circuit further comprises a first current source coupled to the intermediate node, which is configured to provide a first bias current which allows the differential current to vary within a predetermined range. The amplifying circuit further comprises an output terminal coupled to the intermediate node, and a second current source coupled to the intermediate node and configured to provide a second bias current. The second bias current compensates the differential current and the first bias current and produces an output current flowing through the output terminal in a predetermined direction. A measurement device is also described.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 14, 2015
    Inventors: Hong Yao, Yong Yang, Hua Qui
  • Patent number: 9030215
    Abstract: A method for detecting presence of nucleic acid amplification in a test droplet. A set of detection electrodes are provided in contact with a fluidic channel. The test droplet is provided in vicinity of the detection electrodes through the fluidic channel. An alternate current (AC) power at a first frequency is applied across the set of detection electrodes. A first measurement value that reflects electrical impedance of the test droplet at the first frequency is obtained. This value is compared with a corresponding reference value, wherein the corresponding reference value is obtained by measuring a reference droplet containing known amplified nucleic acid or known unamplified nucleic acid at the first frequency. The presence of amplified nucleic acid in the test droplet is thus determined based on the comparison.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: May 12, 2015
    Assignee: The Regents of the University of California Corporation
    Inventors: Abraham P. Lee, Javier Lopez-Prieto, Robert Lin, Mindy Simon, Nick Martin
  • Publication number: 20150115984
    Abstract: A system for generation of electrical power including an inverter connected to a photovoltaic source including a theft prevention and detection feature. A first memory is permanently attached to the photovoltaic source. The first memory is configured to store a first code. A second memory is attached to the inverter. The second memory configured to store a second code. During manufacture or installation of the system, the first code is stored in the first memory attached to the photovoltaic source. The second code based on the first code is stored in the second memory. Prior to operation of the inverter, the first code is compared to the second code and based on the comparison; the generation of the electrical power is enabled or disabled.
    Type: Application
    Filed: December 24, 2014
    Publication date: April 30, 2015
    Inventors: Guy Sella, Meir Adest, Meir Gazit, Lior Handelsman, Ilan Yoskovitch, Amir Fishelov, Yaron Binder, Yoav Galin
  • Patent number: 8994387
    Abstract: A semiconductor device and a detection method thereof are provided. The semiconductor device includes a resistor terminal, a dummy pull up driver, a comparator and a detection state machine. The resistor terminal is connected to an external resistor. The dummy pull up driver provides driving operations of 20 to 2N+1?1 stages, wherein N is a natural number. The comparator outputs a comparison signal in response to a test voltage and a reference voltage. The detection state machine controls the driving operation of the dummy pull up driver to generate and output a detection signal according to the comparison signal. The detection signal indicates an electric connection state of the resistor terminal is a connecting state of an operation voltage or a floating state, a connecting state of the external resistor, or a connecting state of a ground voltage.
    Type: Grant
    Filed: November 4, 2012
    Date of Patent: March 31, 2015
    Assignee: Winbond Electronics Corp.
    Inventor: Chih-Hsiang Chang
  • Patent number: 8981798
    Abstract: An electronic system comprises a resistive sensor structure and an electronic circuit portion whose design is selected such that different resistive sensor structures may be combined within the same electronic circuit. To this end, the resistive sensor structure is used as a voltage/current converter that provides input currents to a current amplifier, which in turn provides an amplified output voltage on the basis of a difference of the input currents. The operating range of the current amplifier is adjusted on the basis of a programmable current source irrespective of the configuration of the resistive sensor structure.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: March 17, 2015
    Assignee: STMicroelectronics S.r.l.
    Inventor: Antonino Scuderi
  • Patent number: 8957694
    Abstract: An integrated circuit includes a monitoring circuit and a monitored circuit connected with the monitoring circuit. The monitoring circuit is operable to determine during fabrication if a resistance of a connection between an in-fab redistribution layer connector and a post-fab redistribution layer connector exceeds a threshold.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: February 17, 2015
    Assignee: Broadcom Corporation
    Inventors: Kunzhong Hu, Chonghua Zhong, Edward Law
  • Publication number: 20150035553
    Abstract: An exemplary voltage sensor device includes at least one high voltage segment and at least one low voltage impedance element. In order to enhance the power dissipation due to impedances spread inside of the device body, the sensor device can be adapted or extended such that at least one high voltage segment, and at least one low voltage impedance element are arranged on an elongated insulating support with adaptive complementary mechanical and electrical interconnection elements on at least one end of the support element. The mechanical and electrical interconnection elements provide a manner of interconnecting at least two elongated insulating supports together in a pivotable way.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 5, 2015
    Applicant: ABB TECHNOLOGY AG
    Inventors: Jaromir PODZEMNY, Marek PAVLAS, Miroslav HRABCIK, Radek JAVORA
  • Publication number: 20150028898
    Abstract: A sense resistor is coupled between a power source and one or more power pins of an integrated circuit (IC) chip including a circuit component (e.g., a microcontroller unit (MCU)). An on-chip amplifier (e.g., a programmable gain amplifier or op-amp) amplifies the voltage drop over the sense resistor to a level that is within the dynamic range of an on-chip analog-to-digital converter (ADC). In some implementations, the measured signals can be time-stamped and stored in a trace buffer and aligned with other trace data using a front-end tool (e.g., a personal computer). In some implementations, circuitry is included for detecting and handling power consumption events associated with the circuit component. In some implementations, a program counter associated with the circuit component is synchronously sampled with the power consumption measurements and/or other data sources.
    Type: Application
    Filed: July 29, 2013
    Publication date: January 29, 2015
    Applicant: Atmel Corporation
    Inventors: Ingar Hanssen, Jo Inge Lamo
  • Publication number: 20150015281
    Abstract: This disclosure describes techniques for measuring the resistance of a component with measurement circuitry that is electrically coupled to the component via one or more electrical conductors (e.g., one or more bond wires). The resistance measurement techniques of this disclosure may measure a resistance of an electrical conductor, and generate a value indicative of a resistance of a component other than the electrical conductor based on the measured resistance of the electrical conductor. The electrical conductor for which the resistance is measured may be the same as or different than one or more of the electrical conductors that the couple the measurement circuitry to the component to be measured. Using an electrical conductor resistance measurement to determine the resistance of a component may improve the accuracy of the resistance measurement for the component.
    Type: Application
    Filed: July 15, 2013
    Publication date: January 15, 2015
    Inventor: Peter Bogner
  • Patent number: 8933714
    Abstract: A level shift circuit in which no adverse effect is produced on a delay time, regardless of the resistance values of resistors. The level shift circuit includes an operation detection circuit that outputs a nseten signal and a nresen signal in response to a state of output from first and second series circuits, a latch malfunction protection circuit connected to the operation detection circuit, a latch circuit connected through first to sixth resistors to first and second level shift output terminals of the first and second series circuits, first and second parasitic resistors, and third and fourth switching elements connected in parallel therewith, and fifth and sixth switching elements connected to a power source potential, a connection point of the first and second resistors or a connection point of the third and fourth resistors, and the operation detection circuit.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: January 13, 2015
    Assignee: Fuji Electric Co., Ltd.
    Inventor: Masashi Akahane
  • Publication number: 20150001965
    Abstract: A method for determining the temperature of an electronic component in an electronic device comprises supplying a current to the electronic component via a power converter device, measuring an input current supplied to the power converter device, determining a power dissipation of the electronic component based on the measured input current, a value for an efficiency of the power converter device and an output voltage of the power converter device, and determining the temperature of the electronic component based on the determined power dissipation and a thermal resistance value for the electronic component.
    Type: Application
    Filed: November 21, 2013
    Publication date: January 1, 2015
    Applicant: Dialog Semiconductor GmbH
    Inventors: Alessandro Angeli, Michele DeFazio, Stefano Scaldaferri, Christian Wolf
  • Patent number: 8901937
    Abstract: A method and a device for canceling an offset voltage in an output of a comparator circuit include applying a signal to a first input of the comparator as a function of an initial tap point in a resistor ladder. While the signal is applied to the first input, a nominal voltage is applied to a second input of the comparator, and then an output of the comparator is analyzed. The signal to the first input is changed in response to the analyzing, by accessing a different tap point in the resistor ladder.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: December 2, 2014
    Assignee: Analog Devices, Inc.
    Inventors: Stephen Robert Kosic, Jeffrey Bray
  • Patent number: 8890551
    Abstract: A test key structure for use in measuring step height includes a substrate, and a pair of test contacts. The substrate includes an isolation region and a diffusion region. The test contact pair includes a first test contact and a second test contact for measuring electrical resistances. The first test contact is disposed on the diffusion region and the second test contact is disposed on the isolation region.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: November 18, 2014
    Assignee: United Microelectronics Corp.
    Inventors: Chih-Kai Kang, Shu-Hsuan Chih, Sheng-Yuan Hsueh, Chia-Chen Sun, Po-Kuang Hsieh, Chi-Horn Pai, Shih-Chieh Hsu
  • Patent number: 8884636
    Abstract: Disclosed is a sensor that can accurately detect displacement and prevents the phenomenon of a contact section between a shaft member and a sliding element receiver being shifted. The sensor comprising: a case having a through hole; a resistance substrate fixed at an inside of said case; a shaft member having a first end portion which is one end of the shaft member placed within said case and a second end portion which is other end of the shaft member exposed to an outside of said case from said through hole, said shaft member being placed at said through hole in a movable manner in an axial direction; and a sliding element receiver having a bearing end contacting with said second end portion of said shaft member, and attached with a brush sliding together with said resistance substrate, said sliding element receiver being capable of moving relatively against said resistance substrate with said shaft member. A hemispherical end face is formed at said first end portion.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: November 11, 2014
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Mikio Nitta
  • Patent number: 8860444
    Abstract: Embodiments relate to fault detection comparator circuitry and methods that can operate in conjunction with a power-on-reset (POR) scheme to put a chip into a reliable power-down mode upon fault detection to avoid disrupting the communication bus link such that other connected chips and the host can continue to operate. Power-on of the affected chip can then be carried out when the connection with that chip is restored.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: October 14, 2014
    Assignee: Infineon Technologies Austria AG
    Inventors: Cheow Guan Lim, Fan Yung Ma
  • Patent number: 8854066
    Abstract: A method detects a glowing contact in a power circuit. The method applies at least two different resistance values across the power circuit and responsively senses at least two voltages across the power circuit. Each of the at least two voltages correspond to one of the at least two different resistance values. Then, the method determines if a number of changes in the sensed at least two voltages with respect to a number of changes in the at least two different resistance values is linear within a predetermined range or if a change in two of the sensed at least two voltages does not increase with a decrease in two of the at least two different resistance values and, otherwise, responsively generates at least one of a trip signal and an alarm signal corresponding to detecting the glowing contact in the power circuit.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: October 7, 2014
    Assignee: Eaton Corporation
    Inventor: John J. Shea
  • Publication number: 20140292359
    Abstract: A communication device, including: a touch sensor configured to detect a touch or an approach of an input object by detecting a change in capacitance; and a near field communicator configured to perform near field communication with an information processing terminal present in a communication area in which near field communication is possible, the information processing terminal being capable of performing the near field communication, wherein a distance within which the touch or the approach of the input object is detectable by the touch sensor is shorter than a distance within which the near field communication by the near field communicator with the information processing terminal is possible.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 2, 2014
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Koji AKAGI, Masaaki WAKIZAKA, Shoji SATO, Akikazu MURATA
  • Publication number: 20140285225
    Abstract: Provided is an apparatus for determining the type of an analog sensor. The apparatus for determining the type of an analog sensor includes a determination module configured to receive an output signal output from the sensor and output a determination reference signal for determining the type of the sensor, and a controller configured to apply the output signal from the sensor to the determination module and determine the type of the sensor using the determination reference signal output from the determination module.
    Type: Application
    Filed: October 31, 2013
    Publication date: September 25, 2014
    Applicant: SAMSUNG SDS CO., LTD.
    Inventors: Ji Hun CHO, Young KWAK
  • Publication number: 20140285226
    Abstract: A method may include applying a first current through the memory element and a first selection component. The memory element and the first selection component may be located along a memory line. The method may also include measuring a first potential difference across the memory line. The method may further include applying a second current through a second selection component, wherein the second selection component is located along a dummy line, and measuring a second potential difference across the dummy line. The method may additionally include determining the resistance of the memory element based on the first potential difference and the second potential difference. The first selection component may be activated and the second selection component may be deactivated to apply the first current. The first selection component may be deactivated and the second selection component may be activated to apply the second current.
    Type: Application
    Filed: March 25, 2014
    Publication date: September 25, 2014
    Inventors: Fei LI, Kit Ho Melvin CHOW
  • Publication number: 20140285106
    Abstract: According to one embodiment, a detection circuit including first and second comparators and a determining unit is provided. The first comparator includes a first input terminal for inputting a first detection voltage, a second input terminal for inputting a first threshold voltage, and a first output terminal configured to output a first output signal. The second comparator includes a third input terminal for inputting a second detection voltage, a fourth input terminal for inputting a second threshold voltage higher than the first threshold voltage, and a second output terminal configured to output a second output signal. The determining unit is configured to determine the presence or absence of conduction angle control of an AC voltage and whether the conduction angle control is a phase control system or an opposite phase control system on the basis of a time difference between the first output signal and the second output signal.
    Type: Application
    Filed: September 12, 2013
    Publication date: September 25, 2014
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventor: Noriyuki Kitamura
  • Patent number: 8841929
    Abstract: A sensor system for a steering wheel of a vehicle includes a first sensor disposed within a first portion of the steering wheel to detect contact with a front left surface of the steering wheel. The sensor system includes a second sensor disposed within a second portion of the steering wheel separate from the first portion to detect contact with a front right surface of the steering wheel. The sensor system also includes a third sensor disposed within the steering wheel to detect contact with a rear surface of the steering wheel. The first, second and third sensors are configured to respectively detect touching of the front left surface, the front right, and the rear surface of the steering wheel by a hand or a non-hand part of an operator of the vehicle. The first, second and third sensors can be complex impedance sensors.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: September 23, 2014
    Assignee: TK Holdings Inc.
    Inventors: Jeffrey Bennett, Leonard S. Cech, Joseph K. Krause
  • Publication number: 20140247528
    Abstract: A method and device are disclosed for determining the direction of current flowing through a circuit breaker. An embodiment includes obtaining a sample value of current flowing through the circuit breaker and a differential value of current; obtaining a sample value of voltage at the circuit breaker; on the basis of a relationship between voltage and current in an equivalent circuit in which the circuit breaker lies at the present time and at a previous time, obtaining an equivalent resistance and an equivalent inductance in the equivalent circuit; if the equivalent resistance and equivalent inductance are both greater than zero, determining that the direction of current flowing through the circuit breaker is the same as the current reference direction, and if the equivalent resistance and equivalent inductance are both less than zero, determining that the direction of current flowing through the circuit breaker is opposite to the current reference direction.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 4, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Wei Gang CHEN, Feng DU, Yue ZHUO
  • Patent number: 8823400
    Abstract: A diagnostic method and system is described for diagnosing an operating condition of a conductive particulate matter sensor. The sensor has a substrate with electrical resistance that varies with temperature and two electrodes on the substrate adapted to collect particulate matter between the electrodes, thereby establishing an electrically conductive path through collected particulate matter between the electrodes that can be detected by measuring electrical resistance between the electrodes, Relect. The diagnosis is performed by heating the substrate in the area between the electrodes and using the resistance between the electrodes to determine detecting whether contamination is present on the surface of the sensor. Heat may be maintained on the sensor to attempt to burn off a detected contaminant, and a subsequent resistance reading may be used to determine if the contaminant was successfully burned off.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: September 2, 2014
    Assignee: Delphi Technologies, Inc.
    Inventors: Lary R. Hocken, Charles S. Nelson
  • Publication number: 20140232361
    Abstract: A system and method are provided for sensing current. A current source is configured to generate a current and a pulsed sense enable signal is generated. A sense voltage across a resistive sense mechanism is sampled according to the sense enable signal, where the sense voltage represents a measurement of the current. A system includes the current source and a current sensing unit. The current source is configured to generate a current. The current sensing unit is coupled the current source and is configured to generate a pulsed sense enable signal and sample the sense voltage across a resistive sense mechanism according to the pulsed sense enable signal.
    Type: Application
    Filed: February 19, 2013
    Publication date: August 21, 2014
    Applicant: NVIDIA CORPORATION
    Inventor: William J. Dally
  • Publication number: 20140216384
    Abstract: It is possible to determine the presence or absence of the degradation and abnormality of a glow plug with high reliability using a relatively simply procedure.
    Type: Application
    Filed: August 13, 2012
    Publication date: August 7, 2014
    Applicant: BOSCH CORPORATION
    Inventors: Yutaka Tanaka, Tomohiro Nakamura, Yoshihito Fujishiro, Yasuo Toyoshima, Yasushi Hiratsuka
  • Publication number: 20140191772
    Abstract: The invention relates to a differential current sensor for measuring a differential current (?I) between an electric current (IH) through a delivery conductor (H) and an electric current (IR) through a return conductor (R), with two low-ohmic current-measuring resistors (RH, RL) for measuring the currents (IH, IR) in the delivery conductor (H) and return conductor (R) and two measuring devices (MEH, MEL) with a measuring transducer for measuring the voltage drops (UH, UL) over the two current-sense resistors (RH, RL) in each case, and also with two voltage references (UREFH, UREFL) for calibrating the measuring devices (MEH, MEL). It is suggested that the two measuring transducers successively measure both the voltage drop (UH) over the respective current-sense resistor (RH) and the associated voltage reference (UREFH, UREFL).
    Type: Application
    Filed: August 6, 2012
    Publication date: July 10, 2014
    Applicant: ISABELLENHUETTE HEUSLER GMBH & CO. KG
    Inventor: Ullrich Hetzler
  • Publication number: 20140191773
    Abstract: A control device for controlling an oxygen concentration sensor includes: a voltage sweeping unit for applying a voltage to the sensor for a time interval during an impedance detection process; a pre-sweeping voltage memory for storing a terminal voltage of the sensor as an initial terminal voltage just before applying the voltage; an impedance detection unit for detecting an element impedance; a voltage returning unit for returning the terminal voltage to the initial terminal voltage after a predetermined time interval has elapsed; a monitoring unit for monitoring the terminal voltage after the voltage returning unit starts returning the terminal voltage; a determination unit for determining whether a monitored terminal voltage of the sensor reaches a stored terminal voltage in the memory; and a stop unit for stopping a returning operation of the voltage returning unit when the monitored terminal voltage reaches the stored terminal voltage.
    Type: Application
    Filed: December 23, 2013
    Publication date: July 10, 2014
    Applicant: DENSO CORPORATION
    Inventors: Masaki SAIJOH, Takamasa OGURI, Kouji MORISHITA
  • Patent number: 8773150
    Abstract: A metal plate (14) is buried in a gasket (12) of a case (10) for accommodating an electric device such as an inverter. The metal plate (14) is connected to a control board (400) in the case (10), and the voltage of the metal plate (14) is determined. A reference voltage is applied to the metal plate (14), and the case (10) is grounded. When the metal plate (14) is brought into contact with the case (10) or disconnected due to a crash, the voltage of the metal plate (14) is thereby changed, and the control board (400) detects a crash, based on the change in the voltage.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: July 8, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Ryouji Hironaka
  • Publication number: 20140184250
    Abstract: A method for measuring electric potential difference comprises following steps. A carbon nanotube composite layer is located on an object and electrically connected to a first region and a second region spaced from each other in the object, wherein an unknown electric potential difference U exists between the first region and the second region. Characteristic band frequency value Y* of Raman-spectra of the carbon nanotube composite layer under the unknown electric potential difference U is measured. A relationship between the characteristic band frequency value Y of Raman-spectra and the electric potential difference ?U of the carbon nanotube composite layer is obtained. Value of unknown electric potential difference U is obtained through the relationship between the characteristic band frequency value Y of Raman-spectra and the electric potential difference ?U.
    Type: Application
    Filed: July 1, 2013
    Publication date: July 3, 2014
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., Tsinghua University
    Inventors: YUAN-HAO JIN, QUN-QING LI, SHOU-SHAN FAN
  • Patent number: 8766654
    Abstract: A package structure with conformal shielding includes a substrate providing electrically connected inner grounding structures, a chip module mounted on the substrate, a molding compound covering the chip module and one surface of the substrate, and a conductive shielding layer covering the molding compound and the lateral sides of the substrate, and electrically connected with a part of the inner grounding structures. The substrate further provides one or multiple independent conductive structures electrically connected with the conductive shielding layer and exposed to the outside. By measuring the resistance value between one independent conductive structure and the conductive shielding layer or another independent conductive structure or one ground contact and then comparing the measured resistance value with a predetermined reference value, the EMI shielding performance of the package structure is determined.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: July 1, 2014
    Assignees: Universal Scientific Industrial Co., Ltd., Universal Global Scientific Industrial Co., Ltd.
    Inventors: Jaw-Ming Ding, Chien-Yeh Liu, Chih-Hao Chiang
  • Publication number: 20140176163
    Abstract: A device and method for estimating resistance of a ground connection of an electrical apparatus connected to an electrical power network, also connected to ground by an additional resistance, and including at least one impedance disposed at an input of the electrical apparatus, a voltage generator connected to the impedance and connected to ground, a mechanism to measure current flowing to ground, and a calculation mechanism to estimate the resistance of the ground connection as a function of the current flowing to ground. The device and method can for example find application in estimation of resistance of a ground connection of a charger of an electric or hybrid traction motor vehicle.
    Type: Application
    Filed: May 14, 2012
    Publication date: June 26, 2014
    Applicant: RENAULT s.a.s.
    Inventors: Christophe Ripoll, Pascal Caumon
  • Publication number: 20140159753
    Abstract: Disclosed are an online alternating current detection device and method. The method includes the following steps: firstly fixedly connecting two sampling points to a segment of wire; amplifying the voltage difference of the sampling points to obtain a median value; subsequently rectifying and filtering and amplifying the median to obtain a direct current amplified value; then utilizing the amplified value, the median value, the multiplying power there between and the resistance value of the wire between the two sampling points to calculate an estimated value of an alternating current; comparing the estimated value to a reference value measured by a standard device between the two sampling points; then adjusting the multiplying power of the amplified value relative to the median until the estimated value coincides with the reference value, only then can the alternating current be measured online.
    Type: Application
    Filed: June 29, 2012
    Publication date: June 12, 2014
    Inventor: Xuanlai You
  • Patent number: 8749252
    Abstract: There are disclosed a method and an equipment for monitoring current drained by a grounding electrode in an electric impedance tomography system. The grounding electrode and a set of electrodes may be simultaneously applied to a patient in an electric impedance tomography apparatus. The equipment may be configured to convert current into a voltage signal and amplify, demodulate, and filter the voltage signal in order to recover its almost continuous component. The equipment may further be configured to compare the value of the continuous component with limit/threshold values proportional to an intensity of an excitation current applied to the set of electrodes. In addition to detecting the disconnection of the grounding electrode, the comparison may also detect the disconnection of one or more tomography electrodes, as well as unbalance in the currents injected through the electrodes and the contact of the patient with voltage sources or conductive bodies.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: June 10, 2014
    Assignee: Timpel S.A.
    Inventor: Edward Lazo Maktura
  • Publication number: 20140152331
    Abstract: A method for detecting a grid event is provided. The method includes sampling grid voltage and grid current over a fixed period of time; determining grid impedance at one or more frequencies using the sampled grid voltage and the sampled grid current; comparing the grid impedance at the one or more frequencies to a known expected grid impedance at the one or more frequencies; and detecting a grid event based on the comparison.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicant: General Electric Company
    Inventors: Robert Gregory Wagoner, Allen Michael Ritter, Mark Eugene Shepard, Talha Irfanul Haque
  • Patent number: 8729915
    Abstract: A current monitor for sensing the current in a current path includes a resistive sensing element in a section of the current path and a current mirror circuit having a first semiconductor device and a second semiconductor device. Both semiconductor devices electrically interconnect with each other for copying the current in the second semiconductor device to the first semiconductor device. The first semiconductor device is electrically connected to an electric reference potential and to a current input side of the section via a resistive equivalence element in a first current branch. The second semiconductor device is electrically connected to the electric reference potential and to a current output side of the section in a second current branch. The current monitor further includes a constant current source for keeping the current in the second current branch independent from the potential difference between the potential of the current output side of the section and the reference potential.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: May 20, 2014
    Assignee: Alcatel Lucent
    Inventors: Gerhard Luz, Dirk Wiegner, Robin Machinal
  • Publication number: 20140125362
    Abstract: A semiconductor device and a detection method thereof are provided. The semiconductor device includes a resistor terminal, a dummy pull up driver, a comparator and a detection state machine. The resistor terminal is connected to an external resistor. The dummy pull up driver provides driving operations of 20 to 2N+1?1 stages, wherein N is a natural number. The comparator outputs a comparison signal in response to a test voltage and a reference voltage. The detection state machine controls the driving operation of the dummy pull up driver to generate and output a detection signal according to the comparison signal. The detection signal indicates an electric connection state of the resistor terminal is a connecting state of an operation voltage or a floating state, a connecting state of the external resistor, or a connecting state of a ground voltage.
    Type: Application
    Filed: November 4, 2012
    Publication date: May 8, 2014
    Applicant: WINBOND ELECTRONICS CORP.
    Inventor: Chih-Hsiang Chang