Analysis Of Complex Waves Patents (Class 324/76.12)
  • Patent number: 10536002
    Abstract: A direct current (DC) bus voltage from a combined output of a plurality of DC power modules is controlled based on an alternating current (AC) voltage of a power grid. The DC bus voltage tracks the AC grid voltage to provide efficient conversion between the DC power sources and the AC grid, even when the amplitude of the AC grid voltage varies. In one example, a variable reference voltage is generated based on a detected AC grid voltage. The reference voltage increases and decreases in proportion to increases and decreases in the AC grid voltage. In this manner, large differences between the bus voltage and the grid voltage are avoided. By closely tracking the two voltages, efficiency in the modulation index for power conversion can be achieved.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: January 14, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Xiaolin Mao, Heping Dai, Huibin Zhu, Dianbo Fu
  • Patent number: 10533854
    Abstract: A method for adjusting the resonance frequency of a loop filter in a delta-sigma modulator includes input of a filter input signal of a loop filter into a frequency adjustment circuit and determination of a noise spectrum of the filter input signal in a first frequency band and a second frequency band. The first frequency band and the second frequency band are arranged symmetrically around the predetermined frequency. The method includes comparison of the noise spectra and creation of an adjustment signal that leads to a frequency adjustment when the noise spectra deviate from one another. The method also includes feedback of the adjustment signal of the frequency adjustment circuit to a control input of the loop filter for setting the filter frequency in response to the comparative result.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: January 14, 2020
    Assignee: Albert-Ludwigs-Universitat Freiburg
    Inventors: Maximilian Marx, Daniel De Dorigo, Yiannos Manoli
  • Patent number: 10516270
    Abstract: A method and apparatus for autonomously operating a microgrid power generator. In one embodiment, the method comprises obtaining a first measurement of at least one grid parameter of a microgrid transmission line coupled to a power generator in a microgrid; comparing the first measurement to a turn-on threshold; initiating, when the first measurement is less than the turn-on threshold, power generation by the power generator; obtaining, after initiation of the energy generation, a second measurement of the at least one grid parameter of the microgrid transmission line; comparing the second measurement to a shut-down threshold that is greater than the turn-on threshold; and stopping, when the second measurement exceeds the shut-down threshold, the power generation by the power generator.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: December 24, 2019
    Assignee: Enphase Energy, Inc.
    Inventors: Donald Richard Zimmanck, Martin Fornage, Michael J. Harrison, Christopher Rowe
  • Patent number: 10488449
    Abstract: Aspects are directed to systems and methods of determining a value of a characteristic related to timing between sequential events of an input electronic signal using an input capture counter having a maximum counting value, the input electronic signal having an expected variable period between events whose value is between a maximum period value and a minimum period value with a delta period value equal to a difference between the maximum period value and the minimum period value.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: November 26, 2019
    Assignee: SCHNEIDER ELECTRIC IT CORPORATION
    Inventor: Brian Patrick Mearns
  • Patent number: 10436895
    Abstract: An efficient RADAR imaging method that is able to detect an object within an interested area. This method uses electromagnetic waves transmitted by one or many transmitters to illuminate the interested area, and then estimates the phase shift of the scattered wave of an object according to the path that the electromagnetic wave propagated. By reversing the phase of the obtained scattered signal to the transmitters' position, an image is constructed for the entire interested area according to the correlation of signals in all channels. The present method works in the frequency domain. It produces a microwave image by using the phase and magnitude of the obtained signal, or using the phase information only. Other unique features include the way it synthesizes the signals obtained in multiple channels and at multiple frequencies. Its overwhelming high efficiency makes rapid microwave imaging and real-time imaging possible.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: October 8, 2019
    Assignee: ELLUMEN, INC.
    Inventors: Wenyi Shao, Todd R. McCollough, William J. McCollough, Arezou Edalati
  • Patent number: 10325150
    Abstract: A method identifies electric load types of a plurality of different electric loads. The method includes providing a support vector machine load feature database of a plurality of different electric load types; sensing a voltage signal and a current signal for each of the different electric loads; determining a load feature vector including at least six steady-state features with a processor from the sensed voltage signal and the sensed current signal; and identifying one of the different electric load types by relating the load feature vector including the at least six steady-state features to the support vector machine load feature database.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: June 18, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Bin Lu, Ronald G. Harley, Liang Du, Yi Yang, Santosh K. Sharma, Prachi S. Zambare, Mayura A. Madane
  • Patent number: 10303484
    Abstract: A method for line speed interconnect processing. The method includes receiving initial inputs from an input communications path, performing a pre-sorting of the initial inputs by using a first stage interconnect parallel processor to create intermediate inputs, and performing the final combining and splitting of the intermediate inputs by using a second stage interconnect parallel processor to create resulting outputs. The method further includes transmitting the resulting outputs out of the second stage at line speed.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: May 28, 2019
    Assignee: INTEL CORPORATION
    Inventor: Mohammad Abdallah
  • Patent number: 10262697
    Abstract: Systems and methods for creating and distributing presentations and determining on an individual or aggregate basis the extent to which the presentations are viewed by the intended recipients. Speech recognition software may be used to provide a detailed analysis of presentation playback.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: April 16, 2019
    Assignee: Videolicious, Inc.
    Inventor: Matthew Benjamin Singer
  • Patent number: 10089589
    Abstract: A method for selecting thresholds for a data variable or key performance indicator (KPI) includes processing, by a computer, an actual data set for the data variable or KPI and displaying a perspective view representing the actual data for the data variable or KPI in an interactive threshold editor or selection dialog on a computer-user interface. Processing the actual data set for the data variable or KPI includes statistically curve fitting the actual data set to a probability distribution function and determining a set of pre-selected thresholds based on the parameters obtained by fitting the actual data set to the probability distribution function. The method further involves presenting one or more user-activable UI elements that are configured to receive user acceptance, rejection or adjustment of the pre-selected thresholds as thresholds for the data variable or KPI.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: October 2, 2018
    Assignee: SAP SE
    Inventor: Andreas Doms
  • Patent number: 10022622
    Abstract: A system that incorporates the subject disclosure may include, for example, a processor that performs operations including detecting a first depression range of a button that includes an electro-mechanical sensor for detecting the first depression range, comparing the first depression range to a first actuation threshold, and asserting a first actuation state when the first depression range is at or exceeds the first actuation threshold. Additional embodiments are disclosed.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: July 17, 2018
    Assignee: STEELSERIES ApS
    Inventor: Tino Soelberg
  • Patent number: 10012680
    Abstract: Techniques for AC input signal detection, whereby a method for AC input signal detection may include: sampling an input signal at a sampling rate, where the input signal is based on an AC signal; comparing the input signal with a threshold signal, determining a first value in case the input signal is larger than the threshold signal; determining at least one second value in case the input signal is smaller than the threshold signal; increasing the sampling rate in case a predefined number of consecutive first values is determined; and decreasing the sampling rate in case the at least one second value is determined.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: July 3, 2018
    Assignee: Infineon Technologies Austria AG
    Inventors: Jens Barrenscheen, Josef Neulinger
  • Patent number: 9954701
    Abstract: Disclosed herein are a Bluetooth signal receiving device and method for receiving a Bluetooth signal. The Bluetooth signal receiving device includes a discriminator circuit and a correlator circuit. The discriminator circuit generates a baseband signal by performing frequency shift demodulation on a received signal, and generates a frequency proportion signal having a value proportional to the frequency of the baseband signal. The correlator circuit detects a packet assigned to the Bluetooth signal receiving device by comparing the frequency proportion signal with an access address received from a link layer. The Bluetooth signal receiving device may detect a packet, assigned to the Bluetooth signal receiving device itself, by using access address information of a link layer.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: April 24, 2018
    Assignee: ABOV SEMICONDUCTOR CO., LTD.
    Inventors: Sang Young Chu, Ki Tae Moon, Suk Kyun Hong
  • Patent number: 9910013
    Abstract: A method for detecting electromagnetic waves derived from bacterial DNA, including extracting and purifying nucleic acids from a sample; diluting the extracted purified nucleic acids in an aqueous solvent; measuring a low frequency electromagnetic emission over time from the diluted extracted purified nucleic acids in an aqueous solvent; performing a signal analysis of the low frequency electromagnetic emission over time; and producing an output, based on the signal analysis, in dependence on the DNA in the sample. The DNA may be extracted from at least one of blood, feces, urine, saliva, tears, seminal fluid, sweat, seminal and vaginal fluids of a patient, or water to determine, e.g., potability. The samples may be frozen. The extracting and purifying may include diluting the sample with an aqueous buffer and mixing; degrading proteins in the diluted sample; precipitating DNA from the buffer solution; and resuspending the precipitated DNA in an aqueous solution.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: March 6, 2018
    Inventor: Luc Montagnier
  • Patent number: 9912201
    Abstract: The systems and methods of detecting a change in object presence in a magnetic field disclosed herein inject a low amplitude signal near the resonant frequency into the coil until the system comes to equilibrium. At this point the feedback is measured. The feedback signal can be measured as at least one of several signals, for example, but not limited to the voltage on the resonant capacitor, the current in the coil, and the voltage between the resonant capacitor and the coil. A change in the steady state response indicates a change in device presence.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: March 6, 2018
    Assignee: Texas Instruments Incorporated
    Inventor: Eric Gregory Oettinger
  • Patent number: 9870785
    Abstract: Features that may be computed from a harmonic signal include a fractional chirp rate, a pitch, and amplitudes of the harmonics. A fractional chirp rate may be estimated, for example, by computing scores corresponding to different fractional chirp rates and selecting a highest score. A first pitch may be computed from a frequency representation that is computed using the estimated fractional chirp rate, for example, by using peak-to-peak distances in the frequency distribution. A second pitch may be computed using the first pitch, and a frequency representation of the signal, for example, by using correlations of portions of the frequency representation. Amplitudes of harmonics of the signal may be determined using the estimated fractional chirp rate and second pitch. Any of the estimated fractional chirp rate, second pitch, and harmonic amplitudes may be used for further processing, such as speech recognition, speaker verification, speaker identification, or signal reconstruction.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: January 16, 2018
    Assignee: KnuEdge Incorporated
    Inventors: David Carlson Bradley, Yao Huang Morin, Massimo Mascaro, Janis I. Intoy, Sean Michael O'Connor, Ellisha Natalie Marongelli, Robert Nicholas Hilton
  • Patent number: 9851414
    Abstract: Energy storage cell impedance testing devices, circuits, and related methods are disclosed. An energy storage cell impedance measuring device includes a sum of sinusoids (SOS) current excitation circuit including differential current sources configured to isolate a ground terminal of the differential current sources from a positive terminal and a negative terminal of an energy storage cell. A method includes applying an SOS signal comprising a sum of sinusoidal current signals to the energy storage cell with the SOS current excitation circuit, each of the sinusoidal current signals oscillating at a different one of a plurality of different frequencies. The method also includes measuring an electrical signal at a positive terminal and a negative terminal of the energy storage cell, and computing an impedance of the energy storage cell at each of the plurality of different frequencies using the measured electrical signal.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: December 26, 2017
    Assignee: Battelle Energy Alliance, LLC
    Inventors: John L Morrison, William H Morrison, Jon P Christophersen
  • Patent number: 9791508
    Abstract: An apparatus includes a receiver configured to receive signals based on an application of test signals to a device under test (DUT). The apparatus further includes a processor and a memory storing computer-executable instructions, that when executed by the processor, cause the processor to generate multiple display frames based on a frequency domain analysis of the received signals. Each display frame of the multiple display frames corresponds to a frequency band of the received signals.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: October 17, 2017
    Assignee: The Boeing Company
    Inventor: Nathan R. Smith
  • Patent number: 9678120
    Abstract: Methods and systems may provide for receiving a set of voltage samples corresponding to a line voltage of a leg in an electrical system and conducting a time domain analysis to identify one or more loads in the electrical system. Additionally, the time domain analysis may be used to identify one or more loads in the electrical system. In one example, conducting the time domain analysis involves classifying events with respect to cross correlation, shape magnitude, transient amplitude, transient duration, run delta and/or standard deviation.
    Type: Grant
    Filed: December 28, 2013
    Date of Patent: June 13, 2017
    Assignee: Intel Corporation
    Inventors: James Y. Song, Tomm V. Aldridge, Pranav K. Sanghadia
  • Patent number: 9640185
    Abstract: A method and apparatus for enhancing modulation of certain speech sounds, such as trill sounds, are provided for radios which utilize digital vocoders. A digitized speech stream is sampled and the sampling is adjusted to determine, detect and enhance trill nulls in the digitized voice stream by one or more of: frame shifting the digitized speech input stream prior to vocoding, time expanding a digitized speech steam prior to vocoding, time compressing a digitized speech output stream after vocoding, and/or modulation enhancement and filtering of the a digitized speech output stream after vocoding.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: May 2, 2017
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: William M Kushner, Robert J Novorita
  • Patent number: 9612286
    Abstract: The present invention generally teaches systems and methods for creating appliance signatures based upon whole house composite load profiles. Methods may includes steps such as identifying primitive elements including transients and absolute steady state levels; clustering the primitive elements along multiple dimensions to form impulses; combining impulses to form simple bundles; combining simple bundles with each other or impulses to form complex bundles; and determining specific appliance signatures that substantially match the complex bundles. Methods may also include steps such as determining transitions within the whole house composite load profile; determining household specific appliance state machines for each appliance in the household; and disaggregating the whole house composite load profile into individual appliance energy loads by assigning the determined transitions to the determined household specific appliance state machines.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: April 4, 2017
    Assignee: Bidgely Inc.
    Inventors: Abhay Gupta, Vivek Garud, Uri Rodney, Subodh Bapat
  • Patent number: 9547029
    Abstract: Detecting electromagnetic waves derived from bacterial DNA, by extracting and purifying nucleic acids from a sample; diluting the extracted purified nucleic acids in an aqueous solvent; measuring a low frequency electromagnetic emission over time from the diluted extracted purified nucleic acids in an aqueous solvent; performing a signal analysis of the low frequency electromagnetic emission over time; and producing an output, based on the signal analysis, in dependence on the DNA in the sample. The DNA may be extracted from at least one of blood, feces, urine, saliva, tears, seminal fluid, sweat, seminal and vaginal fluids of a patient, or water to determine, e.g., potability. The samples may be frozen. The extracting and purifying may include diluting the sample with an aqueous buffer and mixing; degrading proteins in the diluted sample; precipitating DNA from the buffer solution; and resuspending the precipitated DNA in an aqueous solution.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: January 17, 2017
    Inventor: Luc Montagnier
  • Patent number: 9385702
    Abstract: An input/output (I/O) module is configured to connect a controller and a field device. The I/O module includes a PWM (pulse width modulation) demodulator configured to demodulate a PWM signal that is input from the controller, a current source configured to output a current based on an output signal of the PWM demodulator to the field device, a resistance connected in line with the current source, and a feedback circuit configured to feed back an output current of the current source to the PWM demodulator via the controller.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: July 5, 2016
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Shunsuke Hayashi, Mamoru Tamba, Takeshi Arimizu
  • Patent number: 9316610
    Abstract: A method for detecting electromagnetic waves derived from bacterial DNA, including extracting and purifying nucleic acids from a sample; diluting the extracted purified nucleic acids in an aqueous solvent; measuring a low frequency electromagnetic emission over time from the diluted extracted purified nucleic acids in an aqueous solvent; performing a signal analysis of the low frequency electromagnetic emission over time; and producing an output, based on the signal analysis, in dependence on the DNA in the sample. The DNA may be extracted from at least one of blood, feces, urine, saliva, tears, seminal fluid, sweat, seminal and vaginal fluids of a patient, or water to determine, e.g., potability. The samples may be frozen. The extracting and purifying may include diluting the sample with an aqueous buffer and mixing; degrading proteins in the diluted sample; precipitating DNA from the buffer solution; and resuspending the precipitated DNA in an aqueous solution.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: April 19, 2016
    Inventor: Luc Montagnier
  • Patent number: 9307706
    Abstract: A system and method for providing irrigation management services is disclosed. The system may include a plurality of controllers, where each controller controls application of water by an irrigation system associated with the controller. A central computer that is remote from each of the controllers may be configured to implement an irrigation management plan that is individualized to each location and based, at least in part, upon one or more characteristics of the location as determined by an on-site visit. The irrigation manager may guarantee that the system will provide a return on investment within a predefined period of time. The system may also detect faults in the irrigation systems using water usage data from the controllers and diagnose the faults. A technician may be notified and dispatched to repair the faults.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: April 12, 2016
    Assignee: Smart Rain Systems, LLC
    Inventor: Rudy Lars Larsen
  • Patent number: 9041572
    Abstract: Testing a digital-to-analog converter (DAC), where the test is carried out iteratively for a plurality of digital test signal values, includes: providing the digital test signal to a DAC under test and to a servo; providing, by the DAC under test to a summer, an analog test signal, including converting the digital test signal to the analog test signal; providing, by the summer to an observation latch, a summed signal, including summing the analog test signal and an analog offset signal, the analog offset signal received from a second DAC; providing, by the observation latch to the servo, a sample of the summed signal; providing, by the servo to the second DAC in dependence upon the sample and the digital test signal, a digital offset signal, where the second DAC converts the digital offset signal to the analog offset signal; and storing, as a digital observation, the digital offset signal.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: May 26, 2015
    Assignee: International Business Machines Corporation
    Inventors: Eugene R. Atwood, Matthew B. Baecher, William R. Kelly, Joseph F. Logan, Pinping Sun
  • Patent number: 9029165
    Abstract: A method for detecting electromagnetic waves derived from bacterial DNA, comprising extracting and purifying nucleic acids from a sample; diluting the extracted purified nucleic acids in an aqueous solvent; measuring a low frequency electromagnetic emission over time from the diluted extracted purified nucleic acids in an aqueous solvent; performing a signal analysis of the low frequency electromagnetic emission over time; and producing an output, based on the signal analysis, in dependence on the DNA in the sample. The DNA may be extracted from at least one of blood, feces, urine, saliva, tears, seminal fluid, sweat, seminal and vaginal fluids of a patient, or water to determine, e.g., potability. The samples may be frozen. The extracting and purifying may comprise diluting the sample with an aqueous buffer and mixing; degrading proteins in the diluted sample; precipitating DNA from the buffer solution; and resuspending the precipitated DNA in an aqueous solution.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: May 12, 2015
    Inventor: Luc Montagnier
  • Patent number: 8981755
    Abstract: The present invention concerns a method of detecting electric variables of a three-phase AC network having a first, a second and a third phase, including the steps of measuring a respective voltage value of the first, second and third phases in relation to a neutral conductor at a first moment in time, transforming the three voltage values of the first moment in time into polar co-ordinates with a voltage amplitude and a phase angle, repeating measurement and transformation for at least one further moment in time, and determining the currently prevailing frequency, voltage amplitude and/or phase angle of at least one of the phases from the voltage values transformed into polar co-ordinates.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: March 17, 2015
    Assignee: Aloys Wobben
    Inventors: Alfred Beekmann, Volker Diedrichs
  • Patent number: 8981756
    Abstract: Systems and methods for an industrial I/O controller circuit for frequency input modules that measure the frequency of an electrical input signal using adaptive threshold voltage and/or adaptive hysteresis feedback are shown and described. The systems and methods provide advantages in that the I/O controller circuit can better distinguish between actual input pulses from the electrical input signal, as opposed to unwanted Electromagnetic Interference (EMI) induced input pulses. This maximizes the amount of EMI rejection, independent of the frequency of the moving machine, and results in less time to commission and adjust a sensor, fewer false frequency measurements and less system down time.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: March 17, 2015
    Assignee: Rockwell Automation Technologies, Inc.
    Inventor: Joseph G. Vazach
  • Patent number: 8941402
    Abstract: An electromagnetic field measuring apparatus capable of measuring an electromagnetic field for a minuscule area in which electronic devices are densely packed with a high sensitivity is provided. In an electromagnetic field measuring apparatus according to the present invention, the amplitude level of signal light (pf) is adjusted by the analyzer (34) by adjusting its angle with respect to the plane of polarization of the signal light (pf) based on an amplitude level control signal (eb) supplied from the calculation control unit (40). An amplitude level control signal (eb) is supplied from the calculation control unit (40) to the analyzer (34) based on the spectrum (ea) of an electric signal (ed) measured by an RF spectrum analyzer (39). The amplitude level ration between the carrier and the sideband contained in the signal light (ph) incident on the optical receiver (38) is controlled to a fixed value.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: January 27, 2015
    Assignee: NEC Corporation
    Inventors: Mizuki Iwanami, Hiroshi Fukuda, Risato Ohhira
  • Publication number: 20140368184
    Abstract: There is provided an electromagnetic wave signal processor configured to process an input pulse signal corresponding to an electromagnetic wave, comprising a signal processing unit including: a peak detecting circuit to detect peak values of each amplitude of the input pulse signal; an AD converter to convert the peak values into digital signals; a memory device comprising memory cells each having an address assigned in accordance with each of values capable of being taken by the digital signals of the peak values, and being able to have any one of a plurality of internal states representing detection frequencies of the peak values; and a writing circuit to change the internal state in the memory cell that has the address corresponding to the value of each digital signal converted by the AD converter, so as to increment the detection frequency represented by the internal state.
    Type: Application
    Filed: June 9, 2014
    Publication date: December 18, 2014
    Inventors: Shunsuke Kimura, Hideyuki Funaki
  • Patent number: 8880370
    Abstract: Systems, methods, and computer-readable media for detecting signals are provided. A method comprises determining a time-frequency representation for a received signal and partitioning the time-frequency representation of the received signal into a plurality of time-frequency partitions. The method further comprises determining an energy (e.g., a spectral energy) for each of the plurality of time-frequency partitions and detecting one or more signals within the received signal based on the energy (e.g., the mean spectral energy distribution) of the time-frequency partitions. In some embodiments, multiple signals received simultaneously within an input signal may be detected in unknown noise conditions.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: November 4, 2014
    Assignee: Rockwell Collins, Inc.
    Inventor: Shubha L. Kadambe
  • Patent number: 8872503
    Abstract: The main object of the invention is to provide an electromagnetic wave resonator making use of surface waves: an electromagnetic wave resonator structure capable of being achieved with existing technologies yet without much difficulty and applying voltage to a positive dielectric area, thereby overcoming a variety of problems arising from the fact that only thermal excitation is available. The contact structure of negative dielectric/positive dielectric/negative dielectric necessary for this type of electromagnetic wave resonator is provided on the surface of the negative dielectric material 1 just as the coaxial structure of the positive dielectric thin film 3 extending in the Y-axis direction and the negative dielectric material 2 received therein is cut in the axial direction.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: October 28, 2014
    Assignee: National Institute for Materials Science
    Inventors: Hideki Miyazaki, Hiroshi Miyazaki, Hiroki Ebe
  • Patent number: 8868162
    Abstract: A method of attenuating spikes in a complex signal comprises examining the complex signal to detect spikes therein and for each detected spike, generating an estimate inverse signal and applying the estimate inverse signal to the complex signal to attenuate the spike associated with the estimate inverse signal.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: October 21, 2014
    Assignee: Neurochip Corporation
    Inventors: Osbert C. Zalay, Berj L. Bardakjian
  • Patent number: 8810447
    Abstract: A calibration device, capable of calibrating a gain of a radiometer, includes an actuator and a micro-electromechanical-system (MEMS) unit. The actuator receives a calibration signal outputted from a control unit. The MEMS unit is coupled to the actuator, in which the actuator enables the MEMS unit to shield an antenna of the radiometer according to the calibration signal, such that the radiometer generates an environmental signal according to an equivalent radiant temperature received from the MEMS unit, and the control unit calibrates the gain of the radiometer according to the environmental signal.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: August 19, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Chun-Yen Huang, Chin-Chung Nien, Li-Yuan Chang, Chen-Ming Li, Ya-Chung Yu
  • Patent number: 8760173
    Abstract: A signal test apparatus for a serial attached Small Computer System Interface (SAS) device includes an SAS female connector to be connected to the SAS device, an SAS male connector to be connected to a server, first and second pairs of subminiature version A (SMA) connectors, and first and second groups of switches. When the first pair of SMA connectors is connected to an oscillograph to test a pair of output signals from the SAS device, the second group of switches are turned on and the first group of switches are turned off to communicate the SAS device with the server. When the second pair of SMA connector is connected to the oscillograph to test another pair of output signals from the SAS device, the first group of switches are turned on and the second group of switches are turned off to communicate the SAS device with the server.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: June 24, 2014
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Hui Li, Fa-Sheng Huang
  • Patent number: 8754631
    Abstract: An amplitude expected value data generator generates amplitude expected value data that represents, in increments of sampling points, which of multiple amplitude segments the amplitude of a modulated signal waveform that corresponds to the expected value of data to be output from a device under test belongs to. A demodulator performs sampling of the signal waveform to be tested received from the device under test, and generates judgment data that represents, in increments of sampling points, which of the multiple amplitude segments the amplitude of the signal waveform belongs to. A judgment unit makes a comparison between the amplitude expected value data and the judgment data in increments of sampling points.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: June 17, 2014
    Assignee: Advantest Corporation
    Inventors: Daisuke Watanabe, Toshiyuki Okayasu
  • Patent number: 8736250
    Abstract: A method for detecting electromagnetic waves derived from bacterial DNA, comprising extracting and purifying nucleic acids from a sample; diluting the extracted purified nucleic acids in an aqueous solvent; measuring a low frequency electromagnetic emission over time from the diluted extracted purified nucleic acids in an aqueous solvent; performing a signal analysis of the low frequency electromagnetic emission over time; and producing an output, based on the signal analysis, in dependence on the DNA in the sample. The DNA may be extracted from at least one of blood, feces, urine, saliva, tears, seminal fluid, sweat, seminal and vaginal fluids of a patient, or water to determine, e.g., potability. The samples may be frozen. The extracting and purifying may comprise diluting the sample with an aqueous buffer and mixing; degrading proteins in the diluted sample; precipitating DNA from the buffer solution; and resuspending the precipitated DNA in an aqueous solution.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 27, 2014
    Inventor: Luc Montagnier
  • Patent number: 8736290
    Abstract: A signal detection apparatus for a serial attached SCSI (SAS) device includes an SAS female connector to be connected to a SAS device, an SAS male connector to be connected to a system, and first to fourth pairs of subminiature version A (SMA) connectors. When the first pair of SMA connectors is connected to an oscillograph to detect a pair of output signals from the SAS device, the second and third pairs of SMA connectors connect the SAS device with the system. When the second pair of SMA connector is connected to the oscillograph to detect another pair of output signals from the SAS device, the first and fourth pairs of SMA connectors connect the SAS device with the system.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: May 27, 2014
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Fa-Sheng Huang
  • Publication number: 20140117973
    Abstract: An analysis method for a signal time margin is provided. An input signal is received. The input signal is extracted to obtain a primary waveform, at least one first secondary waveform and at least one second secondary waveform of the input signal. The first secondary waveform and the second secondary waveform are respectively located before and after the primary waveform. Quantities of the first secondary waveform and the second secondary waveform are counted to respectively generate a first quantity and a second quantity. According to the first quantity, the primary waveform and the first secondary waveform, first bit combinations are generated, and according to the second quantity, the primary waveform and the second secondary waveform, second bit combinations are generated. The first and second bit combinations are integrated to generate third bit combinations. Signal analysis is performed on the third bit combinations to obtain a signal time margin.
    Type: Application
    Filed: March 8, 2013
    Publication date: May 1, 2014
    Applicants: INVENTEC CORPORATION, INVENTEC (PUDONG) TECHNOLOGY CORPORATION
    Inventor: Yen-Hao Chen
  • Patent number: 8680842
    Abstract: A method of measuring the total harmonic distortion in an electrical distribution system. The distribution system is sampled regularly to generate a set of data. The data is filtered using a narrow band filtering algorithm to measure the energy in fundamental and other harmonic frequencies. Due to the filtering, the energy in harmonic frequencies can be measured without interference from broadband noise, which provides an improvement in the measurement of total harmonic distortion at low current or voltage levels. A method is provided to sum the energy in identified frequencies in a multi-pass configuration, such that only a subset of all monitored frequencies are filtered and summed in each pass, with the balance being filtered and measured in subsequent passes. After all subsets are measured, the total harmonic distortion is calculated.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: March 25, 2014
    Assignee: Schneider Electric USA, Inc.
    Inventors: Kurt H. Copley, Donovan Eugene Wilkerson
  • Patent number: 8674680
    Abstract: A method and device are provided for fast impedance measurement of a biological object having dynamically varying in time parameters, wherein a titlet shaped pulse is introduced into the object and a voltage response signal is measured and analyzed by a processing unit for estimating the impedance of the object. The titlet pulse has a start frequency substantially in one end of the frequency range of interest and a stop frequency substantially in the other end of the frequency range of interest and a duration of the titlet pulse is one cycle or less.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: March 18, 2014
    Assignee: Tallinn University of Technology OÜ Eliko Tehnoloogia Arenduskeskus
    Inventors: Mart Minn, Toivo Paavle, Raul Land, Paul Annus, Toomas Parve
  • Publication number: 20140035559
    Abstract: A common tangent line drawn between a rise portion present from the origin to a second reference voltage and a rise portion corresponding to the second reference voltage can be easily generated through a waveform conversion. A transient recovery voltage measuring device includes a memory storing a transient recovery voltage waveform of a multiple frequency, a waveform conversion unit converting the transient recovery voltage waveform, a wave height determination unit determining two points having the same maximum value on the converted waveform, an adjustment unit adjusting the proportional constant of the waveform conversion unit to determine those two points by the wave height determination unit, a contact point detection unit obtaining two points corresponding to the determined two points determined by the wave height determination unit, and a tangent line generation unit generating a first tangent line passing through the detected two points on the transient recovery voltage waveform.
    Type: Application
    Filed: January 13, 2012
    Publication date: February 6, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tadashi Koshizuka, Kietsu Kudo, Tetsuya Nakamoto
  • Patent number: 8643359
    Abstract: A testing method or apparatus utilizes multiple frequencies applied to a device under test for measuring newly discovered frequency modulation effects. An embodiment may include a lower frequency signal with a smaller amplitude higher frequency signal to test a dynamic change in frequency response, gain, and or phase. This dynamic test can reveal frequency modulation effects. Another embodiment may include the use of a multiple frequency signal to dynamically induce a time varying phase or frequency distortion for the device that has differential phase distortion. The device's output is then measured with an FM detector to measure a shift in one of the frequencies used in the test signal or to measure frequency modulation effects of any signals, including distortion products, from the device.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: February 4, 2014
    Inventor: Ronald Quan
  • Publication number: 20140021938
    Abstract: The present invention relates to a multi-channel PWM waveform measuring device, and more particularly, to a multi-channel PWM waveform measuring device which maximally prevents the loss of an expensive power semiconductor device during the diagnostic process of a complex servo drive and reduces damage of the PCB of the servo drive in order to restore the servo drive safely and quickly. In a multi-channel PWM waveform measuring device for checking a PWM output state of a main control PCB of a servo drive, provided are: a measurement jig outputting a measurement signal to a communication cable through a plurality of probes, which are pre-installed corresponding to each of the measurement points of an inverter and converter for measuring PWM waveforms, wherein the main control PCB of a detachable servo drive, i.e.
    Type: Application
    Filed: March 20, 2012
    Publication date: January 23, 2014
    Inventor: Sangyong Lee
  • Patent number: 8624602
    Abstract: A testing method or apparatus utilizes multiple frequencies applied to a device under test for measuring newly discovered frequency modulation effects. An embodiment may include a lower frequency signal with a smaller amplitude higher frequency signal to test a dynamic change in frequency response, gain, and or phase. This dynamic test can reveal frequency modulation effects. Another embodiment may include the use of a multiple frequency signal or a modulated signal such as an amplitude modulated to dynamically induce a time varying phase or frequency distortion for the device that has differential phase distortion.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: January 7, 2014
    Inventor: Ronald Quan
  • Patent number: 8618789
    Abstract: In a method for current measurement in a multiphase current network, a conductive connection is produced between a plurality of the phases of the multiphase current network such that the plurality of the phases is short-circuited with one another. At a detection time, a current value flowing between the conductive connection and a first voltage potential is detected.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: December 31, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Sven Finke, Timo Kuehn
  • Patent number: 8593132
    Abstract: A parameter calculating apparatus includes a signal generator that generates at least two input signals which each contain different frequency components; a signal inputting unit that inputs the input signals generated by the signal generator to respective ports of a test object at the same time; a frequency component deconstructing unit that deconstructs an output signal which is obtained by synthesizing the input signals input by the signal inputting unit and output from an output port into the frequency components; and a parameter calculator that calculates parameters which indicate transfer coefficients among ports of the test object based on output values of the frequency components obtained via the deconstruction performed by the frequency component deconstructing unit and on input values of the frequency components of the input signals input at the same time to a plurality of ports.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: November 26, 2013
    Assignee: Fujitsu Limited
    Inventor: Toshiro Sato
  • Publication number: 20130307523
    Abstract: An analog unit having a multiple-channel configuration among analog units included in a sequencer system is such that an AC signal as a measurement target, which is captured by a CT sensor, can be directly input to each of a plurality of channels, and the analog unit includes a setting unit that sets, in an internal memory, an abnormality-determination peak current value and an abnormal peak current duration, which are applied to the AC signal as a measurement target, for each of the channels, and a detecting unit that, when the AC signal as a measurement target includes an AC signal that maintains a state where a peak value exceeds the abnormality-determination peak current value for the abnormal peak current duration, detects generation of an abnormal alternating current in each of the channels.
    Type: Application
    Filed: February 3, 2011
    Publication date: November 21, 2013
    Applicant: MItsubishi Electric Corporation
    Inventors: Satoshi Aoki, Hirokazu Nomoto, Tetsuya Tanaka
  • Patent number: 8582675
    Abstract: A pre-channelized spectrum analyzer utilizes a channelizer as a preprocessor for parallel-configured low-resolution spectrum analyzers so as to perform as a high resolution spectrum analyzer. The pre-channelized spectrum analyzer has a polyphase filter that channelizes a signal input and an IFFT that generates filter bank outputs derived from the channelized signal. Spectrum analyzers are in communications with the filter bank outputs so as to generate a spectral decomposition of a subset of those outputs. The spectrum analyzers each perform a window and an FFT function on a corresponding one of the filter bank subset.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: November 12, 2013
    Inventor: Fredric J. Harris
  • Publication number: 20130265034
    Abstract: A method and apparatus for multi-resolution multi-bandwidth spectral signal estimation is provided herein. During operation, a plurality of detectors is provided to determine if an input signal is above a predetermined threshold. The input signal comprises a first frequency range having a first bandwidth. If it is determined that the input signal of the first bandwidth is above a first predetermined threshold, then the same plurality of detectors are used to further analyze sub-bands of the first frequency range, each sub-band having a second bandwidth less than the first bandwidth. The further analysis determines if an input signal to a detector is above a second predetermined threshold.
    Type: Application
    Filed: April 4, 2012
    Publication date: October 10, 2013
    Applicant: MOTOROLA SOLUTIONS, INC.
    Inventors: RAUL SALVI, THOMAS R. HARRINGTON, SPYROS KYPEROUNTAS