| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 702109000 | For transfer function determination | 29 |
| 20080215281 | METHOD FOR MEASURING CORRELATION BETWEEN FREQUENCY RESPONSE FUNCTIONS - A method for measuring correlation between frequency response functions. A first frequency response function and a second frequency response function are acquired. The amplitude of the first and second frequency response functions are tabulated at a plurality of corresponding, predetermined frequencies. Amplitude and shape correlations between the first and second frequency response functions are then computed. The computed amplitude and shape correlations provide an indication of the degree of correspondence between the first and second frequency response functions, and can be used to compute a frequency response index that is an objective measure of the overall correspondence between the first and second frequency response functions. | 09-04-2008 |
| 20080288201 | "METHODS AND APPARATUS TO MEASURE A TRANSFER FUNCTION OF A CONTROL SYSTEM" - Methods and apparatus to measure a transfer function of a control system are disclosed. An example method includes receiving a first signal from the power supply at a first point in the control loop at a digital signal processor, instructing the digital signal processor to add a reference signal having a predetermined frequency and a predetermined amplitude to the first signal to generate a combined signal in the digital signal processor, using the combined signal to generate a control signal for the power stage, sampling the control signal at a second point around the control loop in the digital signal processor to generate a sampled signal, comparing the sampled signal to the reference signal to determine a transfer function of the digital power supply, and displaying the transfer function on a user interface. | 11-20-2008 |
| 20080300816 | ANOMALY DETECTION SYSTEM AND METHOD - An anomaly detection system and a method thereof are disclosed. The system comprises at least a light reflecting unit, a light-emitting unit, an image pick-up unit and a processing module. Each of the light reflecting unit is disposed on an object-to-be-detected that all of which are capable of reflecting light emitted from the light-emitting unit and thus cooperatively generating a reflection image relating to the object-to-be-detected to be received by the image pick-up unit for enabling the same to generate an image signal accordingly. The image signal is then transmitted to the processing module where it is analyzed and compared with a standard image signal so as to determine whether the position of the object-to-be-detected is abnormal. | 12-04-2008 |
| 20090063083 | Method of estimating support state of an electronic apparatus housing and electronic apparatus - 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. | 03-05-2009 |
| 20090216479 | METHOD AND APPARATUS FOR TESTING A POWER ENGINEERING DEVICE - A method and an apparatus for testing a power engineering device, for example a high-power transformer, are provided. A test signal is applied to the power engineering device, and this test signal, starting from an initial value, rises steadily and monotonically to a predetermined final value (U | 08-27-2009 |
| 20100274516 | ARRANGEMENT FOR DETERMINING THE OPERATIONAL PARAMETERS OF A HIGH-FREQUENCY POWER AMPLIFIER - In order to determine various operational parameters of a power amplifier (for example, a complex load impedance or a complex forward and return power or a reflection factor or a voltage standing wave ratio) on a connecting line between an output of the power amplifier and a complex load, complex analog forward and return voltages on the connecting line are determined by an analog coupling device. These analog voltages are digitized and converted down into a baseband by one or more digital down-converters. From these digital values corresponding in absolute value and phase to the complex forward and return voltages and present in the baseband, desired operational parameters may then be calculated by a computer. | 10-28-2010 |
| 20110010125 | METHOD AND SYSTEM FOR DETERMINING A REACTION SIGNAL FOR A SELECTED LOCATION IN AN INFORMATION PROCESSING SYSTEM FOLLOWING THE EFFECT OF AT LEAST ONE INPUT SIGNAL - A method and a device for determining a reaction signal for a selected location in an information processing system ( | 01-13-2011 |
| 20110035175 | METHOD FOR RATING SOLAR UNITS AND IMPLEMENTING APPARATUS - The present invention relates to apparatus rating solar units and to a method for rating solar units that comprises multiple acquisition of at least one input parameter and a corresponding multiple acquisition of at least one output parameter in acquisition intervals, at least one acquisition interval being varied for purposes of subsequently acquiring at least one output parameter as a function of the minimum of one acquired input parameter. | 02-10-2011 |
| 20110125449 | METHOD AND SYSTEM FOR RAPID MODELING AND VERIFICATION OF EXCITATION SYSTEMS FOR SYNCHRONOUS GENERATORS - A system for collecting frequency response data from a generator system including: applying a perturbing signal to a signal input of an exciter system for a synchronous generator; collecting data regarding signal output from a multiplicity of signal points in the exciter system; transforming the collected data to predict a signal response at a signal output in the system different from the signal points used for collecting data, and analyzing the frequency response of the system. | 05-26-2011 |
| 20110153257 | QUANTUM STATE TRANSFER METHOD, QUANTUM STATE TRANSFER SYSTEM DEVICE, QUANTUM OPERATION METHOD AND QUANTUM OPERATION APPARATUS - 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. | 06-23-2011 |
| 20110191054 | TIME DOMAIN NETWORK ANALYZER - 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. | 08-04-2011 |
| 20120016618 | MATCHED FILTER TESTING OF DATA TRANSMISSION CABLES - 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. | 01-19-2012 |
| 20120143553 | Method for Determining an Averaged Frequency-Dependent Transmission Function for a Disturbed Linear Time-Invariant System, Evaluation Device and Computer Program Product - 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-dependent weighting. Furthermore the invention comprises an evaluation device for determining an averaged frequency-dependent transfer function for a perturbed linear time-invariant system and a computer program product. | 06-07-2012 |
| 20120203493 | APPARATUS, SYSTEM, AND METHOD FOR WIRES WITH WAVEGUIDES - 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. | 08-09-2012 |
| 20120253728 | METHOD AND SYSTEM FOR INTELLIGENT AUTOMATED TESTING IN A MULTI-VENDOR, MULTI-PROTOCOL HETEROGENEOUS ENVIRONMENT - 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. | 10-04-2012 |
| 20120278026 | Predictive emissions monitoring system and method - 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. | 11-01-2012 |
| 20130054178 | METHOD AND DEVICE FOR BROADBAND ANALYSIS OF SYSTEMS AND SUBSTANCES - 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). | 02-28-2013 |
| 20130085703 | Histogram-Based Linearization of Analog-to-Digital Converters - 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. | 04-04-2013 |
| 20130317774 | ADJUSTMENT TEST APPARATUS FOR AI MODULE - 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. | 11-28-2013 |
| 20140081589 | METHOD FOR MEASURING PERFORMANCE OF AN APPLIANCE - 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. | 03-20-2014 |
| 20140100810 | TEST SYSTEM FOR DETERMINING A FREQUENCY RESPONSE OF A VIRTUAL POWER PLANT - 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. | 04-10-2014 |
| 20140257737 | MATCHED FILTER TESTING OF DATA TRANSMISSION CABLES - 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. | 09-11-2014 |
| 702110000 | Binary signal stimulus (e.g., pulse) | 2 |
| 20090055122 | On-Chip Frequency Response Measurement - A method and circuit are provided for measuring frequency response performance of an integrated circuit by providing a pulse having a rising edge and a falling edge where the pulse is provided to a plurality of serially connected components. The number of these components which have propagated the leading edge of the pulse before the occurrence of the falling edge provide a numeric indication of the circuit's frequency response and performance. | 02-26-2009 |
| 20120166129 | CALIBRATION METHOD USING A VECTOR NETWORK ANALYZER AND DELAY TIME MEASUREMENT USING THE SAME - Disclosed is a calibration method using a vector network analyzer including: acquiring impulse responses for a direct wave and a multi-reflected wave generated by transmitting and receiving devices connected to a measuring port of the vector network analyzer; setting a gate only for an impulse response for the direct wave among the impulse responses for the acquired direct wave and multi-reflected wave; and transforming the impulse response for the direct wave to which the gate is set into a frequency domain signal and defining the transformed frequency domain signal as calibration results. | 06-28-2012 |
| 702111000 | Noise signal stimulus (e.g., white noise) | 4 |
| 20100049463 | LOW-NOISE SOURCE - In one embodiment, a low-noise source includes: a signal source; a variable amplifier adapted to amplify an output signal from the signal source to provide an amplified signal; a feed-forward amplifier adapted to amplify the amplified signal to provide an amplified output signal; a phase noise measurement system adapted to provide a first feedback signal responsive to phase noise in the amplified output signal; and a processor adapted to control the amplification provided by the variable amplifier responsive to the feedback signal so as to minimize phase noise in the amplified output signal. | 02-25-2010 |
| 20130018622 | METHOD AND APPARATUS FOR DETECTING THE PRESENCE OF A DTV PILOT TONE IN A HIGH NOISE ENVIRONMENTAANM Samarasooriya; VajiraAACI OttawaAACO CAAAGP Samarasooriya; Vajira Ottawa CAAANM Payer; DanielAACI RocklandAACO CAAAGP Payer; Daniel Rockland CAAANM Wight; James S.AACI OttawaAACO CAAAGP Wight; James S. Ottawa CA - A DTV pilot tone is detected in a noisy environment by computing a power average of Fast Fourier Transform (FFT) output spectra of a received signal, finding a power peak in the averaged outputs, computing an adjustment parameter to center the power peak in a Discrete Fourier Transform bin of the averaged output spectra, applying the adjustment parameter to adjust the received signal, computing a coherent average of FFT output spectra of the adjusted signal, and, testing a power spectrum of the coherent average for the presence of the DTV pilot tone. | 01-17-2013 |
| 20130197848 | SYSTEM FOR MEASURING RESIDUAL PHASE NOISE - A system for measuring residual phase noise of a device under test (DUT) includes first and second signal sources, first and second receivers, and a processor. The first signal source generates a first signal to be input to the DUT as a stimulus signal and provides a second signal that is phase coherent with the first signal. The second signal source receives the second signal and generates a reference signal based on the second signal, which is phase coherent with the stimulus signal. The first receiver measures an output signal from the DUT responsive to the stimulus signal, and the second receiver measures the reference signal from the second signal source. The processor mathematically suppresses a carrier of the output signal by determining a difference between the measured output signal and the measured reference signal, and determines the residual phase noise of the DUT based on the difference. | 08-01-2013 |
| 20140142883 | IMPLEMENTING FREQUENCY SPECTRUM ANALYSIS USING CAUSALITY HILBERT TRANSFORM RESULTS OF VNA-GENERATED S-PARAMETER MODEL INFORMATION - A method, system and computer program product are provided for implementing frequency spectrum analysis of noise in a device under test using causality (Hilbert Transform) results of Vector Network Analyzer (VNA) VNA-generated S-parameter model Information. A plurality of S-parameter samples are collected from the VNA generated S-parameter model Information. A Hilbert Transform of the collected plurality of S-parameter samples is used for error magnitude per frequency point analysis. An average error magnitude of predefined collected error magnitude samples is calculated to identify environmental noise in the device under test and used to identify acceptable environmental effects on the device under test. | 05-22-2014 |
| 702112000 | Sinusoidal signal stimulus | 1 |
| 20140136138 | ON-CHIP SPECTRAL ANALYSIS USING ENHANCED RECURSIVE DISCRETE FOURIER TRANSFORMS - A computing device uses a recursive discrete Fourier transform (RDFT) engine to reduce time required by a frequency transform module, memory required to hold intermediate products, and/or computing resources used for the testing. In an embodiment the windowing function is integrated and processed simultaneously with the recursive DFT funcions. A frequency-bin power module is configured to determine the frequency bin within the set of frequency bins that has a greatest signal power at various levels of recursion. | 05-15-2014 |
