For Transfer Function Determination Patents (Class 702/109)
  • Patent number: 9876630
    Abstract: A digital receiver for decoding input data having three states includes a first input coupled to a first data line, a second input coupled to a second data line, a third input coupled to a third data line, and a fourth input coupled to a fourth data line. A first decoder is coupled to a first output, wherein the first decoder is for outputting first data signals in response to the sign of input data on the first data line minus input data on the second line. A second decoder is coupled to a second output, wherein the second decoder is for outputting second data signals in response to the sign of input data on the third data line minus input data on the fourth data line.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: January 23, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Robert Floyd Payne
  • Patent number: 9612256
    Abstract: One embodiment of the invention includes an accelerometer sensor system. The system includes a sensor comprising a proofmass and electrodes and being configured to generate acceleration feedback signals based on control signals applied to the electrodes in response to an input acceleration. The system also includes an acceleration component configured to measure the input acceleration based on the acceleration feedback signals. The system further includes an acceleration controller configured to generate the control signals to define a first scale-factor range associated with the sensor and to define a second scale-factor range associated with the sensor. The control system includes a calibration component configured to calibrate the accelerometer sensor system with respect to range-dependent bias error based on a difference between the measured input acceleration at each of the first scale-factor range and the second scale-factor range.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: April 4, 2017
    Assignee: Northrop Grumman Guidance and Electronics Company, Inc.
    Inventor: Michael D. Bulatowicz
  • Patent number: 9529947
    Abstract: A circuit design description may have registers and combinational gates. Circuit design computing equipment may perform register retiming on the circuit design description, whereby registers are moved across combinational gates, information about the register moves are recorded, and ultimately a modified circuit design description is created. The circuit design computing equipment may perform sequential equivalence checking to ensure that the circuit design description and the modified circuit design description are sequentially equivalent. To facilitate the sequential equivalence checking, the circuit design computing equipment may augment the two circuit design descriptions based on the information recorded during register retiming.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: December 27, 2016
    Assignee: Altera Corporation
    Inventor: Gordon Raymond Chiu
  • Patent number: 9350370
    Abstract: In a sensor signal processing apparatus, a control unit executes at least one of a temperature measurement process and a calculation process in parallel with a signal conversion process. In the temperature measurement process, the control unit causes a second A/D converter to execute the A/D conversion of a temperature signal. In the calculation process, the control unit calculates an offset and a conversion gain of a first A/D converter base on an A/D conversion value output from the second A/D converter and pre-prepared temperature characteristic data of a physical quantity sensor. In the signal conversion process, the control unit sets the calculated offset and the calculated conversion gain to the first A/D converter, and causes the first A/D converter to execute the A/D conversion of the sensor signal.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: May 24, 2016
    Assignee: DENSO CORPORATION
    Inventor: Yukihiko Tanizawa
  • Patent number: 9287008
    Abstract: A circuit and method for controlling internal test mode entry of an Asynchronous Static Random Access Memory (ASRAM) chip wherein the circuit includes an address code comparator for detecting whether address codes inputted via an address bus of the ASRAM chip match a predefined validation code; a test mode detector for determining whether to let the ASRAM chip enter into an internal test mode; a test mode clock generator for generating a clock signal for the test mode decoder; and a test mode decoder for generating a test control signal. The circuit of the present application uses the existing pins of the ASRAM chip to input a special section of codes to trigger the ASRAM to enter into its internal test mode, thereby reducing the difficulty of testing the products.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: March 15, 2016
    Assignee: INTEGRATED SILICON SOLUTION (SHANGHAI), INC.
    Inventor: Mingzhao Tong
  • Patent number: 9199860
    Abstract: A method includes receiving data associated with operation of an industrial process system. The method also includes identifying a model defining a behavior of the industrial process system using the data, an orthonormal bases function, and an ordinal spline bases function. The orthonormal bases function can be generated using estimated poles of the industrial process system. The ordinal spline bases function can be generated using a specified set of cubic splines. The ordinal spline bases function can also be generated using a distribution of knots and multiple ordinal spline functions associated with the knots. More knots can be associated with a more nonlinear portion of the industrial process system, and fewer knots can be associated with a less nonlinear portion or a linear portion of the industrial process system.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: December 1, 2015
    Assignee: Honeywell International Inc.
    Inventor: J. Ward MacArthur
  • Patent number: 8977376
    Abstract: Method and devices for testing a headphone with increased sensation are provided. The headphone can filter and amplify low frequency audio signals, which are then sent to a haptic device in the headphone. The haptic device can cause bass sensations at the top of the skull and at both ear cups. The testing system can evaluate the haptic and acoustic sensations produced by the headphone to evaluate if they have been properly assembled and calibrate the headphones if necessary.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: March 10, 2015
    Assignee: Alpine Electronics of Silicon Valley, Inc.
    Inventors: Rocky Chau-Hsiung Lin, Thomas Yamasaki
  • Patent number: 8956567
    Abstract: A control system for optimizing a chemical loop system includes one or more sensors for measuring one or more parameters in a chemical loop. The sensors are disposed on or in a conduit positioned in the chemical loop. The sensors generate one or more data signals representative of an amount of solids in the conduit. The control system includes a data acquisition system in communication with the sensors and a controller in communication with the data acquisition system. The data acquisition system receives the data signals and the controller generates the control signals. The controller is in communication with one or more valves positioned in the chemical loop. The valves are configured to regulate a flow of the solids through the chemical loop.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: February 17, 2015
    Assignee: ALSTOM Technology Ltd
    Inventors: Xinsheng Lou, Abhinaya Joshi, Hao Lei
  • Patent number: 8855932
    Abstract: The present invention is directed to an apparatus and method for remotely measuring surface air pressure. In one embodiment, the method of the present invention utilizes the steps of transmitting a signal having multiple frequencies into the atmosphere, measuring the transmitted/reflected signal to determine the relative received power level of each frequency and then determining the surface air pressure based upon the attenuation of the transmitted frequencies.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: October 7, 2014
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Bing Lin, Yongxiang Hu
  • Patent number: 8843342
    Abstract: A continuous scanning method employs one or more moveable sensors and one or more reference sensors deployed in the environment around a test subject. Each sensor is configured to sense an attribute of the test subject (e.g., sound energy, infrared energy, etc.) while continuously moving along a path and recording the sensed attribute, the position, and the orientation of each of the moveable sensors and each of the reference sensors. The system then constructs a set of transfer functions corresponding to points in space between the moveable sensors, wherein each of the transfer functions relates the test data of the moveable sensors to the test data of the reference sensors. In this way, a graphical representation of the attribute in the vicinity of test subject can be produced.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: September 23, 2014
    Assignee: ATA Engineering, Inc.
    Inventors: Havard I. Vold, Paul G. Bremner, Parthiv N. Shah
  • Publication number: 20140273042
    Abstract: A portable medical monitor system generates a current calibration curve for generating the estimate of the level of an analyte, such as glucose, being monitored. The current calibration curve is based on at least two measured data values of the level being monitored. The system determines a transformation function based on the calibration curve and at least one preceding calibration curve such that the transformation function produces a predictive calibration curve, and generates an estimated level value of the level being monitored, based on sensor output from a sensor associated with the portable medical monitor system, in accordance with the predictive calibration curve.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: TANDEM DIABETES CARE, INC.
    Inventor: Sean Saint
  • Publication number: 20140257737
    Abstract: In one embodiment, a method for testing a cable includes receiving a read-signal profile read at a receiving-end of a cable upon an initial test signal being input to a sending end of the cable, calculating a cross-correlation function between the read-signal profile and a matched filter output, and determining a peak value of the cross-correlation function. In another embodiment, a system includes a device, the device including logic for receiving a read-signal profile read at a receiving-end of the cable upon an initial test signal being input to a sending end of the cable, logic for calculating a cross-correlation function between the read-signal profile and a matched filter output, logic for determining a peak value of the cross-correlation function, and logic for storing the peak value to a computer readable medium. Other methods, systems, and computer program products are also described according to various embodiments.
    Type: Application
    Filed: May 21, 2014
    Publication date: September 11, 2014
    Applicant: International Business Machines Corporation
    Inventors: Tara Astigarraga, Louie A. Dickens, Nancy V. Ryson, Daniel J. Winarski
  • Patent number: 8798946
    Abstract: The present invention relates to a method and an arrangement based on two-port network (TPN) theory that allows analytically estimating the loop transfer function from open and short-circuited input impedance measurements, e.g. single ended line transmission (SELT) measurements, by utilizing the fact that the line under test (LUT) can be considered reciprocal and by assuming that the LUT is symmetric. Hence, by using the present invention and an estimation of the noise on the line, the attainable bit rate at the customer premises can be determined by means of SELT measurements at the CO. The transfer function of a telephone copper-loop is estimated regardless of its topology by impedance measurements from the CO side. Specifically, such estimation is carried out from the calculation of the transmission parameters of loop, which are expressed only in terms of open and short-circuited input impedance measurements at the CO when reciprocity and symmetry is assumed.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: August 5, 2014
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Klas Ericson, Roberto Menezes Rodrigues, Joäo C. Weyl Albuqerque Costa, Aldebaro Klautau
  • Patent number: 8793093
    Abstract: A wireless electronic device may serve as a device under test in a test system. The test system may include an array of over-the-air antennas that can be used in performing over-the-air wireless tests on the device under test (DUT). A channel model may be used in modeling a multiple-input-multiple-output (MIMO) channel between a multi-antenna wireless base station and a multi-antenna DUT. The test system may be configured to perform over-the-air tests that emulate the channel model. A design and analysis tool may be used to identify an optimum over-the-air test system setup. The tool may be used in converting a geometric model to a stochastic model for performing conducted tests. The tool may be used in converting a stochastic model to a geometric model and then further convert the geometric model to an over-the-air emulated stochastic model. The over-the-air emulated stochastic model may be used in performing conducted tests.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: July 29, 2014
    Assignee: Apple Inc.
    Inventors: Matt A. Mow, Bo Niu, Robert W. Schlub, Ruben Caballero
  • Patent number: 8775111
    Abstract: The present invention is a method for capturing a cooling transfer function for a thermally-isolated, self-heating device. The method includes causing the device to undergo a plurality of successive heat-up cycles and cool-down cycles. The method further includes changing durations of time of the successive cool-down cycles. The method further includes deducing the cooling transfer function based upon temperature measurements for the device obtained at the end of the successive cool-down cycles (ex.—at the beginning of the successive heat-up cycles) of the device. The method thereby allows for capture of the cooling transfer function without direct observation of the cooling transfer function.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: July 8, 2014
    Assignee: Rockwell Collins, Inc.
    Inventors: Anders P. Walker, Vadim Olen, Jonathan A. Lovseth
  • Patent number: 8761943
    Abstract: A control system for optimizing a chemical loop system includes one or more sensors for measuring one or more parameters in a chemical loop. The sensors are disposed on or in a conduit positioned in the chemical loop. The sensors generate one or more data signals representative of an amount of solids in the conduit. The control system includes a data acquisition system in communication with the sensors and a controller in communication with the data acquisition system. The data acquisition system receives the data signals and the controller generates the control signals. The controller is in communication with one or more valves positioned in the chemical loop. The valves are configured to regulate a flow of the solids through the chemical loop.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: June 24, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Xinsheng Lou, Abhinaya Joshi, Hao Lei
  • Patent number: 8756031
    Abstract: In one embodiment, a method for testing a cable includes receiving a read-signal profile read at a receiving-end of a cable upon an initial test signal being input to a sending end of the cable, calculating a cross-correlation function between the read-signal profile and a matched filter output, and determining a peak value of the cross-correlation function. In another embodiment, a system includes a device, the device including logic for receiving a read-signal profile read at a receiving-end of the cable upon an initial test signal being input to a sending end of the cable, logic for calculating a cross-correlation function between the read-signal profile and a matched filter output, logic for determining a peak value of the cross-correlation function, and logic for storing the peak value to a computer readable medium. Other methods, systems, and computer program products are also described according to various embodiments.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: June 17, 2014
    Assignee: International Business Machines Corporation
    Inventors: Tara Astigarraga, Louie A. Dickens, Nancy V. Ryson, Daniel J. Winarski
  • Patent number: 8706438
    Abstract: An apparatus for measuring s-parameters using as few as one pulser and two samplers is described. The apparatus calibrates itself automatically using the internal calibration standards.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: April 22, 2014
    Assignee: Teledyne LeCroy, Inc.
    Inventors: Peter J Pupalaikis, Kaviyesh Doshi, Roger Delbue, Anirudh Sureka
  • Publication number: 20140100810
    Abstract: Disclosed is a test system for determining a frequency response of a virtual power plant connected to a utility grid and including a plurality of distinct power plants. The test system includes a test sequence module for providing a frequency test sequence. The frequency test sequence includes a set of frequency test values; and an injection unit for injecting values of the frequency test sequence simultaneously to nodes of the virtual power plant. A node of the virtual power plant includes any of: a power production unit of a power plant, a power storage unit of a power plant, a plant controller of a power plant. Further described are a virtual power plant and a method of testing a frequency response of a virtual power plant.
    Type: Application
    Filed: October 10, 2012
    Publication date: April 10, 2014
    Inventor: Kaj Skov Nielsen
  • Publication number: 20140081589
    Abstract: A method that measures performance of an information appliance comprises a test module receiving, from a client, and recording a request for processing of a sample data by an information appliance. The test module sends the sample data received from the client to the information appliance for processing. If a request to a backend application is present, the test module also sends the request to the backend application for processing and receives and records a response from the backend application. The test module sends the response from the backend application to the information appliance for processing. A generated correlation ID is used to update a performance data table with start time and a stop time of a response for transaction sample data processed by the information appliance.
    Type: Application
    Filed: February 28, 2013
    Publication date: March 20, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: INTERNATIONAL BUSINESS MACHINES CORPORATION
  • Patent number: 8600696
    Abstract: A method and a device for determining a reaction signal for a selected location in an information processing system (2) in response to at least one input signal (XIn) over an application period T. The effect of an input signal (XIn) on the information processing system is determined by: a) applying input signal(s) (X) to the information processing system (2), b) detecting output signal(s) (Yout) associated with a selected location in the information processing system in response to the input signal(s) (XIn), c) forming a value set (XIn, YOut, Zt) for an output signal (YOut) at the selected location in response to an input signal (XIn) for a given time (Zt), and d) determining the reaction signal (YOutMax) for the selected location.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: December 3, 2013
    Inventor: Oliver Zafiris
  • Patent number: 8600685
    Abstract: Disclosed are systems and methods for prognostic health management (PHM) of electronic systems. Such systems and methods present challenges traditionally viewed as either insurmountable or otherwise not worth the cost of pursuit. The systems and methods are directed to the health monitoring and failure prediction of electronic systems, including the diagnostic methods employed to assess current health state and prognostic methods for the prediction of electronic system failures and remaining useful life. The disclosed methodologies include three techniques: (1) use of existing electronic systems data (circuit as a sensor); (2) use of available external measurements as condition indicators and degradation assessor; and (3) performance assessment metrics derived from available external measurements.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: December 3, 2013
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Patrick W. Kalgren, Antonio E. Ginart, Shashank Nanduri, Anthony J. Boodhansingh, Carl S. Byington, Rolf Orsagh, Brian Sipos, Douglas W. Brown
  • Publication number: 20130317774
    Abstract: An adjustment test apparatus for AI module is disclosed, which includes a signal generator supplying analog electric quantity to a plurality of the same type of AI modules, and a maintenance PC connected to each AI module, the maintenance PC being connected to each AI module through a USB hub having a port corresponding to each AI module and a USB-RS232 converter connected to each port, the maintenance PC having a function of selecting a port to communicate with each AI module, and a function of monitoring a digital output value corresponding to an input signal provided by the signal generator to each AI module at the time of communication and setting each AI module to correct the output value to a proper value.
    Type: Application
    Filed: September 6, 2012
    Publication date: November 28, 2013
    Applicant: Mitsubishi Electronic Corporation
    Inventor: Tomohide ISHIKAWA
  • Patent number: 8566058
    Abstract: A method is provided for de-embedding measurements from a given network containing mixtures of devices with known and unknown S-parameters given a description of the network and the known S-parameters of the overall system.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: October 22, 2013
    Assignee: Teledyne LeCroy, Inc.
    Inventors: Peter J. Pupalaikis, Kaviyesh Doshi
  • Patent number: 8489240
    Abstract: A control system for industrial water systems that utilizes multiple measurements of information and models to decide optimal control actions to maximize corrosion/scaling/fouling inhibition and particulate dispersancy performance and minimize cost of water and treatment chemicals. This system is capable of automatic operation for a wide range of process conditions, ensures multiple performance objectives, achieves robust operation under a variety or un-measurable disturbances and achieves the least costly solution delivery.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: July 16, 2013
    Assignee: General Electric Company
    Inventors: Zhaoyang Wan, Gary E. Geiger, Yong Zhang, Yu Zhang
  • Patent number: 8423312
    Abstract: A method is provided for preventing islanding of a power source connected to an electric AC grid via an interface. The method senses an output voltage waveform of the interface, controls an output current waveform of the interface to track a reference current waveform having a mathematical relationship with the sensed output voltage waveform, and discontinues the output current waveform when the output voltage waveform is sensed to be outside a predetermined waveform range.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: April 16, 2013
    Assignee: SolarBridge Technologies, Inc.
    Inventor: Philip T. Krein
  • Publication number: 20130085703
    Abstract: Embodiments provide histogram-based methods and system to estimate the transfer function of an ADC, and subsequently to linearize a non-linear ADC transfer function. Embodiments include blind algorithms that require no a priori knowledge of the input signal distribution. Embodiments can be implemented using cumulative (i.e., cumulative distribution function (CDF)) or non-cumulative (i.e., probability density function (PDF)) histograms. According to embodiments, a non-linear transfer function can be estimated by linearly approximating successive local intervals of the transfer function. Linearly approximated successive local intervals of the transfer function can then be used to fully characterize and closely estimate the transfer function.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Applicant: Broadcom Corporation
    Inventors: Ray (Ramon) GOMEZ, Bruce J. Currivan, Lin He, Loke Tan, Frank Van der Goes, Cy (Chun-Ying) Chen, Jiangfeng Wu, Thomas Kolze
  • Patent number: 8397187
    Abstract: A verification tool receives a finite precision definition for an approximation of an infinite precision numerical function implemented in a processor in the form of a polynomial of bounded functions. The verification tool receives a domain for verifying outputs of segments associated with the infinite precision numerical function. The verification tool splits the domain into at least two segments, wherein each segment is non-overlapping with any other segment and converts, for each segment, a polynomial of bounded functions for the segment to a simplified formula comprising a polynomial, an inequality, and a constant for a selected segment. The verification tool calculates upper bounds of the polynomial for the at least two segments, beginning with the selected segment and reports the segments that violate a bounding condition.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: March 12, 2013
    Assignee: International Business Machines Corporation
    Inventor: Jun Sawada
  • Publication number: 20130054178
    Abstract: A method and device for high speed broadband testing of systems and substances using a binary, spectrally sparse sequence (SSS) as a periodic excitation waveform. The sequences with controllable frequency and magnitude spectra content are designed by component manipulation method or by edge manipulation method. The excitation waveform is typically pre-calculated, and kept in waveform memory, from where it is shifted out into digital to physical quantity converter (DQC). The sparse spectrum of the SSS makes it easy to create plenty of uncorrelated frequency sets with adjacent, but sufficiently different frequencies to form multi-path test systems, where all the paths can be measured simultaneously. The response of the sample under test (SUT) is sampled and the complex transfer function is calculated directly or indirectly via Impulse Response by Discrete Fourier Transform technique and its derivatives. The sequence bit interval and sampling interval have a predetermined ratio.
    Type: Application
    Filed: August 30, 2012
    Publication date: February 28, 2013
    Applicants: OU ELIKO TEHNOLOOGIA ARENDUSKESKUS, TALLINN UNIVERSITY OF TECHNOLOGY
    Inventors: Raul Land, Paul Annus, Mart Min, Olev Märtens, Jaan Ojarand
  • Publication number: 20120326865
    Abstract: A testing system includes a computer system and an enhanced small form-factor pluggable (SFP+) transceiver. The computer system send a testing data to the SFP+ transceiver via an SFP+ interface to be tested. The SFP+ transceiver includes a loopback address and receives the testing data and returns the testing data to the computer system via the loopback address. The computer system compares the returned testing data and the testing data it sends to determine whether or not there is data loss occurring.
    Type: Application
    Filed: August 8, 2011
    Publication date: December 27, 2012
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
    Inventors: ZHAO-JIE CAO, WEI-DONG CONG
  • Publication number: 20120278026
    Abstract: A method for predicting a value of a first variable based on values of a plurality of additional variables. The method is usable in, for example, predicting by-products of a process based on values of variables relating to operation of the process.
    Type: Application
    Filed: July 2, 2012
    Publication date: November 1, 2012
    Inventor: Brian G. Swanson
  • Publication number: 20120253728
    Abstract: A method and system for test automation is described. The method may include creating a test case on a client computer; generating expected testing results by manually executing the test case on a computer system; performing automated testing on the computer system using the test case to generate automated testing results; validating the test case by comparing the automated testing results with the expected testing results; marking the test case as automatable, if the automated testing results match the expected testing results; and storing the automatable test case for later execution.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 4, 2012
    Applicant: Verizon Patent and Licensing Inc.
    Inventors: Haidar A. CHAMAS, Fred R. GALLOWAY, Robert ORMSBY, James G. RHEEL, Charles D. ROBERTSON
  • Patent number: 8280690
    Abstract: A dimension-gauging system to determine at least one dimension of a non-ferrous, electrically conducting object produces a magnetic field inside the object and changes the excitation of the magnetic field. A signal processing unit measures the reaction of the magnetic field to the change in excitation, obtains an actual field transfer function between the excitation and the measured field reaction and determines the at least one dimension of the object by fitting the measured field transfer function to a predetermined field transfer function, where the predetermined field transfer function represents the dynamic behavior between the excitation and the measured field reaction with the one dimension as a parameter.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: October 2, 2012
    Assignee: ABB AB
    Inventor: Jarl Sobel
  • Patent number: 8248094
    Abstract: A test structure for gathering switching history effect statistics includes a waveform generator circuit that selectively generates a first test waveform representative of a 1SW transistor switching event, and a second test waveform representative of a 2SW transistor switching event; and a history element circuit coupled to the waveform generator circuit, the history element circuit including a device under test (DUT) therein, and a variable delay chain therein, wherein a selected one of the first and second test waveforms are input to the DUT and the variable delay chain; wherein the history element circuit determines fractional a change in signal propagation delay through the DUT between the 1SW and 2SW transistor switching events, with the fractional change in signal propagation delay calibrated with timing measurements of a variable frequency ring oscillator; and wherein the test structure utilizes only external low-speed input and output signals with respect to a chip.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: August 21, 2012
    Assignee: International Business Machines Corporation
    Inventors: Manjul Bhushan, Mark B. Ketchen
  • Patent number: 8249838
    Abstract: A method and apparatus for modeling the characteristics of memristor devices. The invention provides methods and an apparatus for accurately characterizing the linear and non-linear Lissajous current-voltage behavior of actual memristor devices and incorporating such behavior into the resultant model. The invention produces a model that is adaptable to large scale memristor device simulations.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: August 21, 2012
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Robinson E. Pino, James W. Bohl
  • Patent number: 8244384
    Abstract: The systems and methods described herein allow for automatic identification experiments in a closed loop, where the old control strategy, already tuned and tested, is utilized. The strategy is modified to inject additional signal optimized for identification. The experimenting time may be reduced by performing only those system manipulations which explore model uncertainties important to potential degradation of controller performance by discrepancy between the system and the model. The disruptions are reduced by keeping the control loop closed, which eliminates waiting for steady state before applying steps to the inputs and reduces the risk of process limits crossing. The energy of additional signal can be set to meet the maximum allowable disruption requirements. The energy of additional signal is in a direct relation to the speed of identification related information gathering. It can be varied in time to follow the needs of system operators.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: August 14, 2012
    Assignee: Honeywell International Inc.
    Inventors: Daniel Pachner, Pavel Trnka
  • Publication number: 20120203493
    Abstract: An electrical wire includes a core comprising an electrically conductive material that conducts electricity along the length of the electrical wire. The core also includes an acoustic conductive material that conducts acoustic waves along the length of the electrical wire. The core also includes an acoustic waveguide that provides internal reflection for the acoustic waves conducted through the core, and that guides the acoustic waves along the length of the electrical wire. The response acoustic wave signals may be compared against a failure model for the wire in order to determine the reliability of the electrical wire.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 9, 2012
    Inventors: William Kurt Dobson, Zivile Ratkeviciute
  • Publication number: 20120143553
    Abstract: The invention relates to a process for determining an averaged frequency-dependent transfer function for a perturbed linear time-invariant system by means of an evaluation device, wherein the process comprises providing frequency-dependent reference signals derived from excitations input in a linear time-invariant system, providing frequency-dependent measuring signals for the linear time-invariant system associated with the frequency-dependent reference signals, and determining an averaged frequency-dependent transfer function for the linear time-invariant system, in that, using signal deconvolution of mutually associated measuring and reference signals, frequency-dependent transfer functions are determined and the frequency-dependent transfer functions are averaged, and wherein during determination of the averaged frequency-dependent transfer function at least a part of the determined frequency-dependent transfer functions is included in the averaging corresponding to a respectively associated frequency-dep
    Type: Application
    Filed: May 21, 2010
    Publication date: June 7, 2012
    Applicant: SDA SOFTWARE DESIGN AHNERT GMBH
    Inventors: Stefan Feistel, Alexandru Radu Miron, Wolfgang Ahnert, Rainer Feistel
  • Patent number: 8175837
    Abstract: In a method of estimating one of mechanical supporting states of a housing for an electronic apparatus, a drive signal is supplied to an oscillation device from which first oscillation is applied to the housing. A sensor detects a second oscillation transferred through the housing in response to the first oscillation to generate an oscillation signal, and a measurement response characteristic is obtained based on the drive signal and the oscillation signal, and is compared with reference response characteristics which are correlated with the mechanical supporting states, respectively, to estimate one of the mechanical supporting states of the housing.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: May 8, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Minoru Mukai, Takahiro Omori, Daisuke Yamamoto
  • Publication number: 20120099233
    Abstract: A method and a device for supervising the sensitivity of a protection function in an electrical power system including a metering device for measuring values of a feature, said protection function being configured to initialize an action based on a test value and a threshold value for the feature, wherein said test value is either a measured value or derived from the said measured values, the device includes a computing unit configured to receive the test values and, repeatedly during the operation of the protection function, to calculate a mean value and a deviation of the test values, to determine the probability of a false action based on the calculated mean value, the threshold value and the calculated deviation, and to indicate that the sensitivity is too high when the probability of a false action exceeds a first limit value for the probability of a false action.
    Type: Application
    Filed: October 24, 2011
    Publication date: April 26, 2012
    Inventors: Stefan Thorburn, Henrik Johansson, Stefan Roxenborg, Tord Bengtsson
  • Patent number: 8140290
    Abstract: Provided is a transfer characteristic measurement apparatus that measures a transfer characteristic of a circuit under test between input and output, comprising a test signal input section that generates a test signal by adding together a carrier signal having a prescribed frequency and an additional signal having a frequency that differs from the prescribed frequency, and inputs the test signal to the circuit under test; and a transfer characteristic measuring section that measures the transfer characteristic of the circuit under test at the frequency of the additional signal based on a result from a measurement of an output signal output by the circuit under test. The circuit under test may be formed on a semiconductor chip. The circuit under test may correct a signal input to the semiconductor chip, and outputs the corrected signal. The semiconductor chip may further include a sampling circuit that samples the output signal of the circuit under test at the frequency of the carrier signal.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: March 20, 2012
    Assignee: Advantest Corporation
    Inventors: Masahiro Ishida, Kenichi Nagatani
  • Patent number: 8131492
    Abstract: A method of directly measuring hydrogen permeability of a film is provided. The method of evaluating a film includes acquiring, with respect to a specimen including a plurality of films stacked on each other, ion dose-dependence data of intensity of ?-beam generated by hydrogen resonant nuclear reaction, and fitting the data with a functional equation of the ion dose.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: March 6, 2012
    Assignees: Renesas Electronics Corporation, The Foundation for the Promotion of Industrial Science
    Inventors: Shien Cho, Markus Wilde, Katsuyuki Fukutani
  • Publication number: 20120016618
    Abstract: In one embodiment, a method for testing a cable includes receiving a read-signal profile read at a receiving-end of a cable upon an initial test signal being input to a sending end of the cable, calculating a cross-correlation function between the read-signal profile and a matched filter output, and determining a peak value of the cross-correlation function. In another embodiment, a system includes a device, the device including logic for receiving a read-signal profile read at a receiving-end of the cable upon an initial test signal being input to a sending end of the cable, logic for calculating a cross-correlation function between the read-signal profile and a matched filter output, logic for determining a peak value of the cross-correlation function, and logic for storing the peak value to a computer readable medium. Other methods, systems, and computer program products are also described according to various embodiments.
    Type: Application
    Filed: July 13, 2010
    Publication date: January 19, 2012
    Applicant: International Business Machines Corporation
    Inventors: Tara Astigarraga, Louie A. Dickens, Nancy V. Ryson, Daniel J. Winarski
  • Patent number: 8018670
    Abstract: An evaluation apparatus for evaluating a transfer characteristic of a controlled object of a controller is disclosed. The evaluation apparatus includes a response detection section that detects an input/output response of a control system, based on a signal detected in the control system. The control system includes the controller and the controlled object. The evaluation apparatus further includes a transfer characteristic calculating section that calculates the transfer characteristic of the controlled object, based at least on the input/output response.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: September 13, 2011
    Assignee: Marvell International Ltd.
    Inventors: Kiyotada Ito, Makoto Horisaki
  • Patent number: 8010306
    Abstract: A method for obtaining at least one calibration filter for a Mass Spectrometry (MS) instrument system. Measured isotope peak cluster data in a mass spectral range is obtained for a given calibration standard. Relative isotope abundances and actual mass locations of isotopes corresponding thereto are calculated for the given calibration standard. Mass spectral target peak shape functions centered within respective mass spectral ranges are specified. Convolution operations are performed between the calculated relative isotope abundances and the mass spectral target peak shape functions to form calculated isotope peak cluster data. A deconvolution operation is performed between the measured isotope peak cluster data and the calculated isotope peak cluster data after the convolution operations to obtain the at least one calibration filter. Provisions are made for normalizing peak widths, combining internal and external calibration, and using selected measured peaks as standards.
    Type: Grant
    Filed: February 16, 2009
    Date of Patent: August 30, 2011
    Assignee: Cerno Bioscience LLC
    Inventors: Yongdong Wang, Ming Gu
  • Patent number: 8000917
    Abstract: A periodic broadband signal can be used to determine the S21 measurement for a channel by stimulating the channel across a spectrum of interest. The channel response to such broadband signal can be measured from undersampled data captured at the receiver. The Fourier transform of the broadband signal as received, divided by the Fourier transform of broadband signal as transmitted, constitutes the S21. A physically contiguous IC can integrate both a receiver circuit, at which S21 is to be measured, along with an undersampler for sampling the received broadband signal. To maximize signal to noise, a pattern for the broadband signal can be selected to maximize the minimum power across the spectrum of interest. A pattern generator for the broadband signal can be integrated on the same physically contiguous IC with a multiplexer that can select either the pattern generator, or a typical source of data, for transmission into the channel.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: August 16, 2011
    Assignee: Synopsys Inc.
    Inventor: Jeffrey Lee Sonntag
  • Publication number: 20110191054
    Abstract: An apparatus for measuring s-parameters using as few as one pulser and two samplers is described. The apparatus calibrates itself automatically using the internal calibration standards.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 4, 2011
    Applicant: LeCroy Corporation
    Inventors: Peter J. Pupalaikis, Kaviyesh Doshi, Roger Delbue, Anirudh Sureka
  • Publication number: 20110153257
    Abstract: A quantum state transfer system device comprises transmitting device that measures an input qubit and a first qubit array that includes not less than three qubits; and a receiving device that selects in accordance with the measurement result a qubit as an output qubit from among qubits included in a second qubit array that includes not less than three qubits and is quantum-mechanically entangled with the first qubit array.
    Type: Application
    Filed: July 16, 2009
    Publication date: June 23, 2011
    Applicant: NEC CORPORATION
    Inventor: Satoshi Ishizaka
  • Patent number: 7960707
    Abstract: Methods and apparatuses for determining the depth and concentration of fluorophores in a turbid medium are disclosed. The method advantageously provides for a rapid estimation of the depth of the fluorophore using characteristics of a temporal point spread function. The concentration of the fluorophore can be determined using the method of the present invention by combining a calculated depth of the fluorophore with a measurement of the intensity of the emitted fluorescence. The intensity can be accurately measured by the apparatus disclosed herein which combine back-reflection and trans-illumination geometries for the source of light injecting and detection.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: June 14, 2011
    Assignee: New Art Advanced Research Technologies, Inc.
    Inventors: David Jonathan Hall, Guobin Ma, Frederic Lesage, Pascal Gallant
  • Patent number: RE43117
    Abstract: The invention is an apparatus and method including hardware and software, which allows collecting and analyzing data to obtain information about mechanical properties of soft materials in a much faster way. The apparatus can be used as a stand-alone deice or an add-on to the existing AFM device. The apparatus allows collecting dynamical measurements using a set of multiple frequencies of interest at once, in one measurement instead of sequential, one frequency in a time; measurements.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: January 17, 2012
    Assignee: Clarkson University
    Inventor: Igor Sokolov