Entries |
Document | Title | Date |
20080215267 | Processing of a Signal Representing Radiation - A method for processing a noisy digital time signal yk of digital pitch k, corresponding to an initial analog signal St after being conditioned by a conditioning chain. The initial analog signal St comprises at least one pulse representing an information concerning at least one radiation ( | 09-04-2008 |
20080215268 | Signal Outage Detection - Disclosed are various embodiments for outage detection. In one embodiment, an outage detection system includes a signal sampler configured to sample a signal on a communications link and to determine a noise level and a signal level of the sample. An outage detection system also includes a comparator configured to compare a critical value with a sum of signal and noise of the sample. An outage detection system further includes a binomial probability analyzer configured to calculate a binomial probability of false outage of the sample and the previous N samples. | 09-04-2008 |
20080221812 | DIFFERENTIATION OF FLOW CYTOMETRY PULSES AND APPLICATIONS - A method of analyzing pulses from a flow cytometer in which particles in a fluid pass through an excitation volume of an electromagnetic radiation and interact with the electromagnetic radiation to generate signals in the form of pulses includes generating a time-dependent pulse indicative of the characteristics of one or more particles passing through the excitation volume of the electromagnetic radiation, determining a measurement window by selecting a portion of the pulse with a starting point and an ending point above a predetermined value, and calculating a first derivative of the pulse with respect to time over the measurement window. | 09-11-2008 |
20080243406 | Temporally aligned waveform processing - Methods for processing waveforms may include using temporal descriptor information about an input waveform to selectively request a segment of the input waveform that, when processed by a filter, produces a segment of an output waveform. In an illustrative example, waveform descriptor information may be used to request data to perform unary or filtering operations, or to perform one or more processes that involve at least one additional waveform. In combination with a filter descriptor that identifies, for example, upsampling factor, delay samples, and startup samples, complex waveform operations may be processed by selectively pulling input waveform segment data to generate a segment of the output waveform. In embodiments that process sequential waveform segments, filter tap states may be initialized using state information from processing of a previous waveform segment. | 10-02-2008 |
20080243407 | ALIGNMENT OF MASS SPECTROMETRY DATA - Methods, systems and mediums are disclosed for aligning mass spectrometry data before the analysis of the mass spectrometry data. The mass spectrometry data may be received from a mass spectrometry machine, and re-sampled using a smooth warping function. To estimate the warping function, a synthetic signal is build using, for example, Gaussian pulses centered at a set of reference peaks. The reference peaks may be designated by users or calculated after observing a group of spectrograms. The synthetic signal is shifted and scaled so that the cross-correlation between the mass spectrometry data and the synthetic signal reaches its maximum value. | 10-02-2008 |
20080243408 | DATA COMPRESSION FOR A WAVEFORM DATA ANALYZER - A compressor for waveforms having at least two waveform states separates the waveform samples into waveform state sample vectors for each waveform state. Waveform state encoders encode the waveform state sample vectors separately to provide compressed waveform data. The waveform state encoder selects waveform state pattern vector and associated codes to represent the waveform state sample vectors. The differences between samples of the waveform state sample vector and waveform state pattern vector are calculated and encoded. Encoding can be lossless or lossy. The waveform state pattern vectors and other parameters for compression are determined during a training period. The waveform state encoders detect features in the waveform state sample vectors and waveform state pattern vectors that are useful for common oscilloscope measurements. Typical waveform states include level states and edge states. | 10-02-2008 |
20080262763 | INSTRUMENT RING ARCHITECTURE FOR USE WITH A MULTI-CORE PROCESSOR - Apparatuses for a test and measurement instrument provide an instrument capable of handling acquisition, transfer, analysis, and display of large quantities of waveform data and complex waveforms. The apparatus for a test and measurement instrument consists of multiple processors with each processor being connected to its own memory controller. Each memory controller is connected to its own memory. The processors are connected in a circular arrangement by multiple high-speed interconnects. There are multiple bridges with each processor being connected to its own bridge. There are multiple system buses with each bridge been connected to its own system bus. A housing encloses the processors, memory controllers, high-speed interconnects, and bridges. | 10-23-2008 |
20080281538 | Test unit and test apparatus - In the digitizer, a plurality of ADCs convert a plurality of analogue signals output from the device to be tested, to digital signals, respectively. The processing circuit is configured as a software-independent circuit and processes a plurality of digital signals output from the plurality of ADCs. The processing circuit is formed on the FPGA. In the processing circuit, the FFT circuit performs complex Fourier transform on two digital signals. | 11-13-2008 |
20080281539 | DETECTION AND CORRECTION OF ERRORS IN DEMODULATOR USING DIFFERENTIAL CALCULATIONS - Systems, methods, and devices are described for detecting and correcting errors. Samples are received representative of a wireless signal which includes a number of subcarriers. One or more of the subcarriers may be identified as a reference subcarrier, and the identification may be based on an energy measurement. A value for the reference subcarrier may be identified at a selected symbol. The value may be identified by calculating a difference measurement for the reference subcarrier between a previous, known symbol and the selected symbol. A difference measurement is then calculated between the identified subcarrier and a second subcarrier for the selected symbol. A determination may be made whether a decision for a subcarrier at the selected symbol is in error based on calculations which include the identified value and the difference measurement between the identified subcarrier and a second subcarrier. The decision in error may be corrected. | 11-13-2008 |
20080281540 | APPARATUS AND METHOD FOR ESTIMATING SYNCHRONIZED PHASORS AT PREDETERMINED TIMES REFERENCED TO A COMMON TIME STANDARD IN AN ELECTRICAL SYSTEM - An apparatus and method estimates a plurality of synchronized phasors at predetermined times referenced to an absolute time standard in an electrical power system. The method includes acquiring and determining a frequency of a power system signal, sampling the power system signal at a sampling interval rate based on a frequency of the power system signal to form signal samples, and generating a plurality of acquisition time values based on an occurrence of each of the signal samples at a corresponding plurality of different times referenced to the absolute time standard. The method further includes adjusting a phasor of each of the signal samples based on a time difference between a corresponding selected acquisition time value and a predetermined time referenced to an absolute time standard to form the plurality of synchronized phasors. | 11-13-2008 |
20080300807 | Electric Winding Displacement Detection Method and Apparatus - A method and system for obtaining the characteristic impedance of an electrical winding by measuring the input and output voltages and the currents within a winding across a low frequency range, and applying transmission line properties to model the winding. The characteristic impedance (Zc) is directly proportional to the capacitance of the winding, and is independent of external circuits. Thus any changes to Zc will reflect movements of the winding that would affect the capacitance. Because Zc has a smooth and robust monotonical relationship with frequency of the applied signal, the resulting curve is exponential in shape. A relative comparison between Zc curves will provide a clear indication of the overall axial or radial winding movements, or winding faults, which can be used to assess the overall health of the winding. | 12-04-2008 |
20080300808 | Method for Signal Processing of Capacitive Measurement Scales - A method for the signal processing of capacitive measurement scales intended for the measurement of lengths or angles, consisting of two parts moveable relative to each other provided with electrodes that together form condensers, whose magnitudes are variable and depend on the relative position as specified by a sinusoidal relationship between the two parts. The first part has n electrodes evenly distributed over one measurement period and the second part has one electrode per measurement period. The electrodes in the first part are fed with n alternating voltages whereby the time displacements of the alternating voltages relative to each other are | 12-04-2008 |
20090048795 | METHOD AND APPARATUS FOR RESOLVING INDIVIDUAL SIGNALS IN DETECTOR OUTPUT DATA - A method and apparatus for resolving individual signals in a radiation detector output data. The method comprising: obtaining a signal form characterizing the detector; obtaining digitized detector output data in a form of a digital time series; making parameter estimates of one or more parameters of at least one signal present in the detector output data, wherein the one or more parameters comprise at least a signal temporal position of the at least one signal; forming a mathematical model based on the digital time series and as a function of at least the signal form, the temporal position of the at least one signal, and an amplitude of the at least one signal; and determining the amplitude of the at least one signal based on the mathematical model, the amplitude being indicative of a radiation event. | 02-19-2009 |
20090055111 | WAVEFORM ANOMOLY DETECTION AND NOTIFICATION SYSTEMS AND METHODS - Systems and methods that may be used to detect anomalies in waveforms. The system may detect an anomaly automatically and without user intervention. In addition, the systems and methods may alert a human operator of the anomaly and, in some embodiments, may provide suggestions as to the cause of the problem and/or possible solutions to the problem. | 02-26-2009 |
20090063070 | Circuit and Method for Fitting the Output of a Sensor to a Predetermined Linear Relationship - A circuit employing a plurality of n sensors, the circuit being arranged such that one of a transfer function or output function of the circuit approximates a desired mathematical relationship between a physical property measured by the sensors and the output of the circuit, the one of the transfer function or output function equalling the desired relationship at least 2*n+1 points. | 03-05-2009 |
20090070053 | POYNTING-VECTOR FILTER - A determination is made of frequency components associated with a particular bearing or location resulting from sources emitting electromagnetic-wave energy for which a Poynting-Vector can be defined. The broadband frequency components associated with a specific direction or location of interest are isolated from other components in the power spectrum that are not associated with the direction or location of interest. The collection of pointing vectors can be used to characterize the source. | 03-12-2009 |
20090076751 | SYSTEMS AND METHODS FOR MEASURING SIGNAL WAVEFORMS - A system for measuring a signal waveform is provided. The system comprises a parameter receiving module, a waveform receiving module, a waveform filter, and a data storing module. The parameter receiving module is configured for receiving one or more filtration conditions. The waveform receiving module is configured for receiving the signal waveform. The waveform filter is configured for filtering the signal waveform to obtain a desired waveform. The data storing module is configured for storing the desired waveform into a storage device. | 03-19-2009 |
20090119042 | METHOD OF TESTING AN ELECTRONIC CIRCUIT AND APPARATUS THEREOF - A method of testing an electronic circuit is provided. The method comprises radiating a laser beam onto the electronic circuit, and determining a plurality of samples of a response signal output by the electronic circuit during the period when the laser beam is radiated. The method further comprises accumulating the plurality of samples to generate a value, and generating a test result based on the value. | 05-07-2009 |
20090119043 | Phase imbalance monitoring apparatus, amplitude imbalance monitoring apparatus, and apparatus using the same - The present invention discloses a phase imbalance monitoring apparatus, an amplitude imbalance monitoring apparatus, as well as an apparatus incorporating the same. The phase imbalance monitoring apparatus is for use in an apparatus in which imbalance between an I branch signal and a Q branch signal in quadrature to each other is required to be monitored, and is characterized in comprising a preprocessing unit, for performing preprocessing on the I branch signal and the Q branch signal to extract essential information relevant to correlation of the signals; and a correlation unit, for performing correlation processing on the extracted essential information to learn of the phase imbalance between the I branch signal and the Q branch signal. | 05-07-2009 |
20090144003 | Position only fit, POF, algorithm for blur spot target tracking & discrimination - A method for determining the amplitude of an infrared object may include receiving an infrared image of the object from a sensor, and expressing the objects infrared amplitude as a function of its position coordinates. The sum of the squared residuals of the objects true infrared response and a model of the objects infrared response may be minimized to determine the centroid of the infrared image. The objects infrared amplitude may then determined based on the centroid location. | 06-04-2009 |
20090171603 | METHODS OF DETECTING SERIES ARCS IN ELECTRICAL SIGNALS - A method of detecting a series arc fault in an alternating current electrical signal is provided. A method for detecting a series arc fault in an alternating current electrical signal, comprising: a) calculating discrete wavelet coefficients using a current signal as an input for the discrete wavelet coefficient calculations, and outputting discrete wavelet coefficient filtered output; b) subsampling the discrete wavelet coefficient filtered output and outputting a subsampled output; c) calculating critical variables from the subsampled output; d) determining from the critical variables whether a series arc fault is present in the current signal; and e) outputting an signal indicating that a series arc fault is present in the current signal, if substantially all of the critical variables meet a predetermined criteria. | 07-02-2009 |
20090192738 | CALIBRATION TECHNIQUE FOR POWER AMPLIFIERS - A method of calibrating an amplifier includes receiving input and output samples, wherein the input and output samples are time-aligned, assigning at least one of the input and output samples to one of a plurality of categories based on the input sample, and estimating at least one characteristic of the amplifier based on the contents of at least one of said plurality of categories. | 07-30-2009 |
20090210181 | System and method for analyzing power flow in semiconductor plasma generation systems - A system and method for measuring and analyzing power flow parameters in RF-based excitation systems for semi-conductor plasma generators. A measuring probe ( | 08-20-2009 |
20090222226 | Method and Apparatus for On-Line Compressed Sensing - A typical data acquisition system takes periodic samples of a signal, image, or other data, often at the so-called Nyquist/Shannon sampling rate of two times the data bandwidth in order to ensure that no information is lost. In applications involving wideband signals, the Nyquist/Shannon sampling rate is very high, even though the signals may have a simple underlying structure. Recent developments in mathematics and signal processing have uncovered a solution to this Nyquist/Shannon sampling rate bottlenck for signals that are sparse or compressible in some representation. We demonstrate and reduce to practice methods to extract information directly from an analog or digital signal based on altering our notion of sampling to replace uniform time samples with more general linear functionals. One embodiment of our invention is a low-rate analog-to-information converter that can replace the high-rate analog-to-digital converter in certain applications involving wideband signals. Another embodiment is an encoding scheme for wideband discrete-time signals that condenses their information content. | 09-03-2009 |
20090222227 | METHOD AND APPARATUS FOR TESTING THE OPERATING CONDITIONS OF AN ELECTRIC NETWORK - A method for testing the operating conditions of an electric network, including at least one operating state, including the steps of providing a voltage signal (v(t)) to a network load and measuring the instantaneous current signal (i(t)) circulating in the load, delaying the instantaneous current signal (i(t)) to generate an instantaneous current signal delayed ((i(t+τ)) by a predetermined amount of time (τ), the predetermined amount of time (τ) being a function of the operating state of said load, the method including the steps of calculating, within a predetermined measurement time (Tm), an admittance ratio (G | 09-03-2009 |
20090281747 | SIGNAL MEASUREMENT APPARATUS, SIGNAL MEASUREMENT METHOD, RECORDING MEDIA AND TEST APPARATUS - Provided is a signal measurement apparatus, including sampling sections that each sample a signal under measurement having a cycle T with a threshold value, where the threshold values of at least two of the sampling sections are different from each other; a waveform reconfiguring section that shapes a reconfigured waveform having the cycle T by rearranging ordinal ranks of sample values corresponding to each threshold value obtained by the sampling sections, a distribution generating section that generates a timing distribution of edges in the reconfigured waveform corresponding to each threshold value; and a calculating section that calculates rise time or fall time of the signal under measurement based on the timing distribution corresponding to each threshold value. | 11-12-2009 |
20090292490 | DETERMINING A TOTAL LENGTH FOR CONDUCTIVE WHISKERS IN COMPUTER SYSTEMS - One embodiment of the present invention provides a system that determines a total whisker length for conductive whiskers on a circuit in a computer system. During operation, a target electromagnetic signal radiating from the computer system is monitored. Then, the target electromagnetic signal is analyzed to determine the total whisker length for conductive whiskers on the circuit in the computer system. | 11-26-2009 |
20090306917 | SAMPLING APPARATUS AND SAMPLING METHOD - Provided is a sampling apparatus that samples a signal under measurement, including a sample processing section that outputs sample data obtained by sampling the signal under measurement with a sampling timing at non-uniform intervals obtained by thinning a reference clock, a storage section that stores the sample data, and a waveform generating section that generates a waveform of the signal under measurement based on the sample data read from the storage section. The sample processing section includes a sampler that samples the signal under measurement in synchronization with the reference clock and a data thinning section that thins the sample data output by the sampler and outputs this thinned data as sample data with the sampling timing at non-uniform intervals. | 12-10-2009 |
20100004887 | Apparatus for registering and analyzing the spectral signature of a dynamic event - Apparatus for registering the spectral signature of a dynamic source event include an imaging-sensor array configured to register electromagnetic energy over a predetermined range of electromagnetic wavelengths and an optical system configured for imaging onto the imaging-sensor array a dispersion pattern of electromagnetic energy emitted from a source event external to the optical system. The optical system includes (i) a focusing element and (ii) a selected set of optical dispersion apparatus. Among the optical dispersion apparatus are at least a first optically dispersive element that disperses a first selected set of wavelengths within the sensitivity range of the imaging-sensor array and at least a second optically dispersive element that disperses a second selected set of wavelengths within the sensitivity range of the imaging-sensor array such that wavelengths emitted from a source event that are within the first and second selected sets of wavelengths impinge simultaneously upon the imaging-sensor array along, respectively, a first extrapolated axis and a second extrapolated axis that is non-parallel to the first extrapolated axis. | 01-07-2010 |
20100010760 | METHOD OF ANALYZING REFLECTION WAVES USING EFFECTIVE IMPEDANCE - Provided is a method for analyzing a reflection wave using effective impedance. The method includes the steps of: a) modeling a reflection surface of a building two-dimensionally; and b) obtaining a reflection wave by radiating a radio wave to the modeled reflection surface and analyzing the obtained reflection wave through making medium uniform. | 01-14-2010 |
20100023288 | ITERATIVE METHOD FOR CHARACTERIZING THE FREQUENCY DEPENDENCE OF THE LINEAR PROPERTIES OF AN ELECTRICAL COMPONENT - Rational macromodeling of multiport devices is disclosed that can ensure high accuracy with arbitrary terminal conditions. This can be achieved by reformulating a vector fitting technique to fit eigenpairs rather than matrix elements, and weighting can be chosen equal to an inverse of an eigenvalue magnitude in order to achieve a relative accuracy criterion for the eigenvalue fit. The procedure can improve accuracy for cases with a large eigenvalue spread. Impedance characteristics of an adjacent network can be used to lessen the complexity of the fitting and to improve accuracy. | 01-28-2010 |
20100030502 | STRAY FLUX PROCESSING METHOD AND SYSTEM - A method of and system for processing stray flux data associated with a synchronous electrical machine; the method comprising capturing stray flux data from the synchronous electrical machine; generating a stray flux waveform using at least the captured stray flux data; analysing the generated stray flux waveform and the captured stray flux data; and storing the generated stray flux waveform and the captured stray flux data in a database. | 02-04-2010 |
20100036629 | Method and Device for Recognizing Pulses - A series (FA) of scanning values (AW) is transformed into a series (FT) of transformation values (TW) by adding one respective transformation value (TW) representing a current scanning value (AW) of the series (FA) of scanning values (AW) to the series (FT) of transformation values (TW) if the current scanning value (AW) of the series (FA) of scanning values (AW) deviates from a given reference scanning value (REF) at least by a given net value (MDIFF). The current scanning value (AW) of the series (FA) of scanning values (AW) which deviates from the given reference scanning value (REF) at least by the given net value (MDIFF) is predefined as the given reference scanning value (REF) for subsequent current scanning values (AW). A moving average (M) is determined in accordance with the series (FT) of transformation values (TW). Pulses (IMP) are recognized in accordance with the moving average (M). | 02-11-2010 |
20100042347 | DEVICE, METHOD, AND PROGRAM FOR DETERMINING ELEMENT, RECORDING MEDIUM, AND MEASUREMENT DEVICE - A reflection element determination device derives error factors in a first signal source and a second signal source based on measurement results of a signal in respective states in which reflection elements are respectively connected to the first signal source and the second signal source, and measurement results of a signal in a state in which the first signal source and the second signal source are connected with each other via a transmission element, derives transmission characteristics of the transmission element based on the measurement results of a signal in the state in which the first signal source and the second signal source are connected with each other via the transmission element and the derived error factors, and determines whether the reflection elements realize predetermined reflection states based on the derived transmission characteristics of the transmission element and transmission characteristics of the transmission element which have been known before the derivation, where the transmission characteristic of the transmission element in a direction from a first terminal to a second terminal, and the transmission characteristic of the transmission element in the opposite direction are equal to each other. | 02-18-2010 |
20100070221 | System and Method for Sample Point Analysis with Threshold Setting - A signal analysis system that may include threshold setting for analyzing analog signals. The system may include a plurality of digitizers and adjustable power supplies for supplying threshold voltages for the digitizers. The system may digitize a set of analog signals, locate features and attributes in the digitized signals and determine a duty cycle for signals based on the signal features and attributes. The determined duty cycle may then be used to set threshold voltages on the power supplies. | 03-18-2010 |
20100070222 | TEST DEVICE AND A METHOD FOR CARRYING OUT A FUNCTION TEST ON A COMMUNICATION SYSTEM - The present invention provides a test device and a method for carrying out a function test on a communication system. The test device contains a transmission path having at least one leaky line antenna arranged in the aircraft cabin, a control device coupled to the transmission path for feeding an HF signal at a predetermined power level into the leaky line antenna, and at least one measuring mechanism coupled at a predetermined coupling point to the transmission path to measure the power level of the HF signal at the coupling point and to transmit a result signal which depends on the measured power level via the leaky line antenna to the control device. | 03-18-2010 |
20100094576 | APPARATUS AND METHOD FOR RANGING AND NOISE REDUCTION OF LOW COHERENCE INTERFEROMETRY LCI AND OPTICAL COHERENCE TOMOGRAPHY OCT SIGNALS BY PARALLEL DETECTION OF SPECTRAL BANDS - Apparatus and method for increasing the sensitivity in the detection of optical coherence tomography and low coherence interferometry (“LCI”) signals by detecting a parallel set of spectral bands, each band being a unique combination of optical frequencies. The LCI broad bandwidth source is split into N spectral bands. The N spectral bands are individually detected and processed to provide an increase in the signal-to-noise ratio by a factor of N. Each spectral band is detected by a separate photo detector and amplified. For each spectral band the signal is band pass filtered around the signal band by analog electronics and digitized, or, alternatively, the signal may be digitized and band pass filtered in software. As a consequence, the shot noise contribution to the signal is reduced by a factor equal to the number of spectral bands. The signal remains the same. The reduction of the shot noise increases the dynamic range and sensitivity of the system. | 04-15-2010 |
20100153040 | WAVEFORM CORRELATION RESULT PROCESSING METHODS AND APPARATUSES - Methods and apparatus are provided for use in devices adapted to perform waveform correlation result processing. An exemplary method may include accessing a plurality of collected measurement values stored in memory, establishing at least one combined measurement value based, at least in part, on at least two of the collected measurement values, and identifying at least one wireless signal within a reference waveform based, at least in part, on at least the combined measurement value. The method may also include establishing the at least one correlation result for at least one of the plurality of waveforms by correlating the at least one of the plurality of waveforms with the reference waveform. | 06-17-2010 |
20100153041 | ERROR PROCESSING IN TIME INTERLEAVED SIGNAL PROCESSING DEVICES - The present invention relates to a signal processing apparatus comprising a signal input and a signal output; a plurality of signal processing units, wherein each signal processing unit having the same structure and at least one spatial error, being connected to the signal input, and being adapted to subject an input signal from the signal input to predetermined signal processing; selection means configured to select and form a predetermined number of groups from the plurality of signal processing units in accordance with a predetermined criterion; and control means for controlling the groups of the signal processing units to be active in a time interleaved schema, wherein an active group provides a respective processed input signal as an output signal to the signal output; wherein the plurality of signal processing units comprises more signal processing units as required to realize a predetermined time interleaving factor. | 06-17-2010 |
20100153042 | MEASUREMENT APPARATUS AND PROGRAM - Provided is a measurement apparatus that measures, as an error under measurement, at least one of a gain error and a phase error of a quadrature demodulator or a quadrature modulator, the measurement apparatus comprising an output control section that causes the quadrature demodulator or the quadrature modulator serving as a measurement target to output a signal; a detecting section that detects a measured signal representing a real component and an imaginary component of the signal output from the quadrature demodulator or the quadrature modulator serving as the measurement target; and a calculating section that calculates, as the gain error or the phase error, a solution for a variable that maximizes a correlation value between the measured signal detected by the detecting section and an ideal signal that includes the error under measurement as the variable and that represents the measured signal that should be output by the quadrature demodulator or the quadrature modulator serving as the measurement target. | 06-17-2010 |
20100191492 | FLICKER DETECTING DEVICE AND FLICKER DETECTING METHOD USING THE SAME, AND RECORDING MEDIUM STORING COMPUTER PROGRAM FOR EXECUTING THE FLICKER DETECTING METHOD - A flicker detecting device for detecting a flicker of an organic light emitting diode (OLED) display apparatus, a flicker detecting method that uses the flicker detecting device, and a recording medium storing a computer program executing the flicker detecting method are provided. The flicker detecting device includes a light receiving unit receiving light from the display apparatus and generating a brightness waveform according to a brightness of the light; a frame detecting unit detecting a data display frame of the display apparatus from the brightness waveform; a waveform shaping unit shaping the brightness waveform to eliminate a start period of the data display frame from the brightness waveform; and a flicker calculating unit calculating a flicker value of the display apparatus by using the shaped brightness waveform from the waveform shaping unit, so that the detection of the flicker can be correctly performed. | 07-29-2010 |
20100204937 | POWER TRIGGER WITH TIME QUALIFIED AND SEQUENTIAL EVENT CAPABILITY - A power trigger is provided having time qualified and sequential event capability. Digital data representing an input signal is converted into a power signal. The power signal is compared to a trigger level. A trigger signal is generated when the power signal violates the trigger level for either at least or less than a specified time duration. Alternatively, the trigger signal may be generated on the occurrence of a sequence of such violations. | 08-12-2010 |
20100235123 | SYSTEM AND METHOD FOR CORRECTING SIGNAL POLARITIES AND DETECTION THRESHOLDS IN A RAIL VEHICLE INSPECTION SYSTEM - A method for identifying a location of a wheel of a rail vehicle includes producing a first signal representative of a potential difference between leads electrically coupled with a wheel gate transducer and modifying the first signal that is received over a first channel to produce a second signal over a second channel, where the second signal differs from the first signal. The method further includes monitoring the first and second signals over the first and second channels to identify the location of the wheel relative to the wheel gate transducer. | 09-16-2010 |
20100241378 | Method and Apparatus for Compressive Parameter Estimation and Tracking - We have developed a new method and apparatus for tracking and estimating parameters of locally oscillating signals from measurements that approximately preserve the inner product among signals in a class of signals of interest. Random demodulation, random sampling, and coset sampling are three prime examples of these techniques. | 09-23-2010 |
20100280778 | ELECTROMAGNETIC DISTRIBUTION PROCESSING DEVICE AND METHOD - An electromagnetic distribution processing device calculates an electromagnetic distribution over areas that are spatially discretized. The electromagnetic distribution processing device includes an electromagnetic processing unit configured to calculate a physical amount of an electromagnetic current in each of the areas based on an electromagnetic field intensity; an electromagnetic change amount processing unit configured to calculate, for each of the areas, a temporal change amount of the physical amount of the electromagnetic current calculated by the electromagnetic processing unit; and a cumulative change amount processing unit configured to calculate, for each of the areas, a cumulative value that is obtained by accumulating the temporal change amounts of the physical amount of the electromagnetic current calculated by the electromagnetic change amount processing unit. | 11-04-2010 |
20100305892 | NEAR-ISOTROPIC ANTENNA FOR MONITORING ELECTROMAGNETIC SIGNALS - One embodiment provides a system that analyzes a target electromagnetic signal radiating from a monitored system. During operation, the system monitors the target electromagnetic signal using a near-isotropic antenna that includes a set of receiving surfaces arranged in a regular polyhedron. Next, the system obtains a set of received target electromagnetic signals from the receiving surfaces. Finally, the system assesses the integrity of the monitored system by separately analyzing each of the received target electromagnetic signals. | 12-02-2010 |
20100324849 | AMPLITUDE COMPUTING APPARATUS AND AMPLITUDE COMPUTING METHOD - An amplitude computing apparatus includes: a mean or median value computing unit configured to compute a mean or median value of a distribution of an input signal that changes sinusoidally; a mode value computing unit configured to compute a mode value of the distribution of the input signal; and an amplitude computing unit configured to compute a difference between the mean or median value and the mode value as an amplitude of the input signal. | 12-23-2010 |
20110015885 | ON-MACHINE MEASUREMENT METHOD AND MEASUREMENT APPARATUS - A reference mirror | 01-20-2011 |
20110022339 | Method of Extracting A Time Constant From Complex Random Telegraph Signals - A method and apparatus for extracting a time constant from a time series of values of a signal that varies in accordance with multiple charge carrier trap defects that cause Random Telegraph Noise (RTN), using transition-based assignment of states. | 01-27-2011 |
20110035168 | MULTICARRIER REFLECTOMETRY DEVICE AND METHOD FOR ON-LINE DIAGNOSIS OF AT LEAST ONE TRANSMISSION LINE - A multi-carrier reflectometry device and method for on-line diagnosis of at least one transmission line. The device includes: a transmission part that includes successively: a module for parameterizing a test signal S | 02-10-2011 |
20110040508 | APPARATUS AND METHOD FOR DETECTING ARCS - The apparatus for detecting arc occurred in chamber for plasma treatment used for manufacturing semiconductor or LCD panel comprises, a sensor module for sensing the arc; a processor module for processing data from the sensor module; wherein the sensor module includes RGB color sensor for sensing color data of the arc occurred in the chamber, the RGB color sensor is a sensor sensable at least one of red color or green color or blue color of the arc, the apparatus detects the arc by sensing data of color and chroma and brightness of the arc. | 02-17-2011 |
20110077883 | Measurement of Fourier Coefficients Using Integrating Photometric Detector - Provided is a measurement method of Fourier coefficients using an integrating photometric detector, wherein, when measuring an exposure (S | 03-31-2011 |
20110077884 | INTERNAL COAXIAL CABLE CONNECTOR INTEGRATED CIRCUIT AND METHOD OF USE THEREOF - A structure is provided. The structure includes a signal retrieval circuit formed within a disk located within a coaxial cable connector. The signal retrieval circuit is located in a position that is external to a signal path of an electrical signal flowing through the coaxial cable connector. The signal retrieval circuit is configured to extract an energy signal from the electrical signal flowing through the coaxial cable connector. The energy signal is configured to apply power to an electrical device located within the coaxial cable connector. | 03-31-2011 |
20110077885 | APPARATUS AND METHOD FOR ESTIMATING SYNCHRONIZED PHASORS AT PREDETERMINED TIMES REFERENCED TO A COMMON TIME STANDARD IN AN ELECTRICAL SYSTEM - An apparatus and method estimates a plurality of synchronized phasors at predetermined times referenced to a common time standard in an electrical power system. The method includes acquiring and determining a frequency of a power system signal, sampling the power system signal at a sampling interval rate based on a frequency of the power system signal to form signal samples, and generating a plurality of acquisition time values based on an occurrence of each of the signal samples at a corresponding plurality of different times referenced to the common time standard. The method further includes adjusting a phasor of each of the signal samples based on a time difference between a corresponding selected acquisition time value and a predetermined time referenced to a common time standard to form the plurality of synchronized phasors. | 03-31-2011 |
20110119007 | METHOD AND SYSTEM FOR DETERMINING THE TIME-OF-FLIGHT OF A SIGNAL - A method for determining the time-of-flight of a signal includes: receiving a signal having a series of pulses of period T, the series of pulses having a phase transition provided therein windowing the received signal with a window having a width substantially the same as T to determine a magnitude and phase of the windowed signal at a frequency F=1/T; sliding the window in time, one period T at a time, with respect to the received signal to produce N sets of magnitude and phase data at the frequency F; from the N sets of magnitude and phase data, determining a time when the phase transition occurs in the received signal; and determining a time-of-flight of the signal from the time when the phase transition occurs in the received signal. | 05-19-2011 |
20110119008 | Target Signal Determination Method and Associated Apparatus - A method and associated apparatus using delay correlation for determining whether an input signal is a target signal is provided. The method includes sampling the input signal to generate 2N sample values, the sample values having a period N, where N is a positive integer; calculating the 2N sample values to obtain a first value according to a first operation method; calculating the 2N sample values to obtain a second value according to a second operation method; obtaining a determination value according to the first value and the second value; and determining whether the input signal is the target signal according to the determination value and a threshold. | 05-19-2011 |
20110130989 | SYSTEM AND METHOD FOR IDENTIFYING A PERIPHERAL COMPONENT INTERCONNECT EXPRESS SIGNAL - A system and method for identifying a peripheral component interconnect express (PCIe) signal obtains a waveform of the PCIe signal. A pre-emphasis value of the PCIe signal is calculated according to the waveform. Accordingly, a signal type of the PCIe signal is determined. | 06-02-2011 |
20110144934 | METHOD AND ARRANGEMENT FOR SAMPLING RATE CONVERSION - Re-sampling of a signal represented by a plurality of input samples is described. An output sample value is calculated for a desired time instant, t | 06-16-2011 |
20110144935 | ULTRASONIC INSPECTION USING ACOUSTIC MODELING - Configuration of an ultrasonic inspection system is facilitated using an ultrasound response predicted by a simulation tool. In one embodiment, estimated material properties of an object to be inspected are input to the simulation tool. Also input to the simulation tool is at least one estimated property of an ultrasonic transducer of the ultrasonic inspection. The simulation tool predicts the response of the object to ultrasound from the ultrasonic transducer. This response is dependent upon the estimated material properties of the object to be inspected and the at least one estimated property of the ultrasonic transducer. The ultrasonic inspection system is then configured dependent upon a feature of the predicted response. The system may be configured, for example, by setting the position of a time gate, selecting an appropriate ultrasonic transducer, selecting the position of the transducer to achieve good focus, or selecting parameters for signal processing. | 06-16-2011 |
20110178749 | Adaptive Triggers Method for MIDI Signal Period Measuring - An initial positive trigger value is above a minimum positive trigger value which is above an input signal DC component value. An initial negative trigger value is under a maximum negative trigger value which is under the input signal DC component value. Maximum and minimum signal values are measured and then they are used for the next positive and negative trigger value calculations. A positive signal half period is measured by measuring the time interval from the time point when a signal value becomes greater than the positive trigger value, to a time point where the input signal becomes less than the negative trigger value when the negative half period measuring starts. The negative half period measuring ends when the input signal value becomes greater than the positive trigger value. Positive and negative half period measurements are repeated several times and measured half periods are stored to memory. The difference of two different half period sums must be less than a given small value to accept one of two sums as N signal periods. | 07-21-2011 |
20110191046 | TIME DOMAIN REFLECTOMETRY STEP TO S-PARAMETER CONVERSION - A method and apparatus are provided for calculating s-parameters of a device under test from step waveforms acquired by a time domain network analyzer. | 08-04-2011 |
20110213577 | METHOD AND APPARATUS FOR ANALYZING WAVEFORM SIGNALS OF A POWER SYSTEM - Method and apparatus for analyzing waveform signals of a power system. A waveform signal obtained from the power system is digitalized and then filtered. One or more segments are identified on the filtered waveform signal and, based on the information content of the identified segments, each of the one or more identified segments are classified as corresponding to a normal or abnormal condition occurred in the power system. | 09-01-2011 |
20110213578 | Signal Detection Device, Signal Detection Method, and Method of Manufacturing Signal Detection Device - A signal detection device allows wavelet transformation of an object signal to be performed in real time by using a real signal mother wavelet. The signal detection device has: an object signal decomposition unit having a lifting scheme structure or a multiple analysis structure relying on multiresolution analysis; a parasitic filter coupled to a desired decomposition filter of the object signal decomposition unit, with the parasitic filter being configured such that a real signal mother wavelet is inputted to the object signal decomposition unit and a generic discrete wavelet transformation is performed, the parasitic filter substantially reproduces and outputs the inputted real signal mother wavelet, and with the real signal mother wavelet being made up of the object signal; means for inputting the object signal to the object signal decomposition unit and performing discrete wavelet transformation using the real signal mother wavelet; and means for computing a wavelet instantaneous correlation on the basis of an output of the parasitic filter. | 09-01-2011 |
20110264391 | Signal Analyzer - An off-line vibrational analyzer comprising a digital signal processor ( | 10-27-2011 |
20110288800 | METHOD FOR MEASURING SYSTEM PARAMETER OF LINEAR MULTIPORT AND MEASURING METHOD USING VECTOR NETWORK ANALYZER - The present invention provides a novel measurement method for system parameters of a 5-port junction used in a VNA (Vector Network Analyzer). A VNA is a device for measuring amplitude ratios and phase differences (S-parameters: scattering matrix elements) between incident waves and reflected waves of a DUT (Device Under Test), or between input waves and transmitted waves. What has been newly discovered is that for 5 ports, S-parameters can be expressed by a linear coupling using H and power difference ratios ({P(S)/P(0)}−1). It is possible to easily calculate parameter H using a minimum of three already known standards, and amount of calculation can be reduced compared to conventionally. | 11-24-2011 |
20110313701 | ROTATING MACHINE SHAFT SIGNAL MONITORING METHOD AND SYSTEM - This invention relates to a method of and system for monitoring shaft signals associated with a shaft of a rotating machine. The method comprising receiving voltage signals associated with the shaft; receiving current signals associated with the shaft; determining, from the received voltage and current signals, voltage and current data relating to the machine; presenting at least some of the determined voltage and current data to a user; trending at least the determined voltage data to at least determine voltage data trends associated with the machine; and determining from the voltage and current data if a fault condition has occurred and generating an alarm signal or condition in response thereto. | 12-22-2011 |
20110320147 | PRECISION MEASUREMENTS IN A FIBER OPTIC DISTRIBUTED SENSOR SYSTEM - A fiber optic distributed vibration sensor provides a highly sensitive measurement of a measurand with a high degree of linearity. The distributed vibration sensor includes subsections configured to have a high sensitivity to a measurand of interest interspaced in an alternating manner with subsections having a low sensitivity to the measurand. The distributed vibration sensor is interrogated such that a phase difference between the backscattered signals generated in low sensitivity subsections surrounding a high sensitivity subsection can be determined. Characteristics of the measurand may then be determined based on the phase difference. | 12-29-2011 |
20120029854 | READOUT METHODOLOGY FOR MULTI-CHANNEL ACQUISITION OF SPATIALLY DISTRIBUTED SIGNAL - A readout apparatus and method for processing spatially distributed signals is disclosed. The readout apparatus and method may reduce/eliminate the impact gain variations among a plurality of sensing channels. This is done by continuously varying the dispersion properties of a signal distribution device, which may induce a spatial shift of the signal distribution during data acquisition, allowing the distributed signals to move across the sensor area. Shifting of the distributed signals may occur multiple times, hence eliminating the impact of gain variation across the sensor array. The accumulated data may be re-assembled subsequently to complete the readout operation. | 02-02-2012 |
20120029855 | DETECTION APPARATUS WITH A MATCHING NETWORK FOR NULLING AND ASSOCIATED METHODS - A detection apparatus includes a transmitter to generate a detection signal, and a coil assembly including a transmit coil and a receive coil. The transmit coil transmits the detection signal toward an object to be detected, with the object to be detected emitting a target signal in response to the transmitted detection signal. The receive coil receives the target signal emitted from the object along with an undesired coupling signal from the transmit coil. A matching network is coupled to the transmitter and generates an adjusted detection signal by adjusting a profile of the detection signal to match a profile of the undesired coupling signal. An output stage has a first input coupled to the receive coil to receive the target signal and the undesired coupling signal, and a second input coupled to the matching network to receive the adjusted transmit signal. The output stage subtracts the adjusted detection signal from the target signal and the undesired coupling signal so that the target signal remains. | 02-02-2012 |
20120041700 | METHOD AND APPARATUS FOR RESOLVING INDIVIDUAL SIGNALS IN DETECTOR OUTPUT DATA - A method and apparatus for resolving individual signals in detector output data by obtaining an impulse response characterizing a detector. The method further includes obtaining digitized detector output data in a form of a digital time series and making estimates of a signal temporal position of at least one signal present in the detector output data. The method further includes forming a mathematical model based on the digital time series and determining an amplitude of the at least one signal indicative of an event based on the mathematical model. | 02-16-2012 |
20120078557 | MULTI-DOMAIN TEST AND MEASUREMENT INSTRUMENT - A test and measurement instrument including an input port configured to receive an input signal; a digitizer configured to digitize the input signal; a decimator coupled to the digitizer and configured to decimate the digitized input signal to generate a decimated input signal; a digital downconverter coupled to the digitizer and configured to frequency shift the digitized input signal to generate a frequency shifted input signal; and a memory configured to store the decimated input signal and the frequency shifted input signal. | 03-29-2012 |
20120089357 | METHOD AND APPARATUS FOR IDENTIFYING ANOMALIES OF A SIGNAL - A method and apparatus are disclosed for identifying anomalies of a signal, by analyzing a signal using a frequency-based technique, analyzing results of the frequency-based analysis using a statistical analysis technique, determining one or more limits based on the statistical analysis, and comparing a frequency domain representation of the signal to the limits to identify anomalies of the signal. | 04-12-2012 |
20120143547 | Method for Quantifying Peaks in an Analytical Signal - A method for quantifying peaks in an analytical signal, peaks in the analytical signal being quantified by recording successive signal values and applying a peak analysis methodology to the recorded successive signal values within an interval to obtain a set of peak quantification results. Before the same peak analysis methodology is applied to the modified signal to quantify the peaks in the signal, random noise is added to the analytical signal and/or the signal is shifted within the interval to facilitate optimization of the parameters of the peak analysis methodology and to improve the robustness of the method in runtime applications. A subsequent statistical evaluation of the peak quantification results from the multiple repeated peak analyses of the original and modified signals is used to detect an occurrence of and to reduce the chance of a possible error in the peak quantification that needs to be alarmed or addressed. | 06-07-2012 |
20120166119 | Apparatus and Method for Reducing Discontinuities Between Waveforms in a Communication System - An apparatus, method and system for reducing discontinuities between waveforms in a communication system. In one embodiment, an apparatus includes a processor and memory including computer program code. The memory and the computer program code are configured, with the processor, to determine an amplitude and set of derivatives at an end point of a first symbol waveform, and determine an amplitude and set of derivatives at a beginning point of a second symbol waveform. The memory and the computer program code are configured, with the processor, to insert a guard period waveform having an amplitude and set of derivatives at a first end to substantially match the amplitude and set of derivatives at the end point of the first symbol waveform and an amplitude and set of derivatives at a second end that substantially matches the amplitude and set of derivatives at the beginning point of the second symbol waveform. | 06-28-2012 |
20120179404 | SYSTEM AND APPARATUS FOR MEASURING THE ACCURACY OF A BACKUP TIME SOURCE - An intelligent electronic device incorporates a first port that accepts a time signal from a time server over a network and a second port for receiving a second time signal over a separate network. The intelligent electronic device approximates the amount of error in the second time signal based on calculations of the error in the first time signal. | 07-12-2012 |
20120215473 | Method for predictively controlling the operation of an electronic component, electronic equipment and control device - According to this method, an electromagnetic spectrum emitted by the electronic component during operation is measured and the measured electromagnetic spectrum is compared with a predetermined template defining at least one safe operating range in order to detect possible malfunction or risk of malfunction of the electronic component. | 08-23-2012 |
20120232818 | RELATIVE PHASE DETECTOR, RELATIVE PHASE DETECTING METHOD AND INFORMATION READING DEVICE - It detects the relative phase of two measured signals using two reference signals. The relative phase detector | 09-13-2012 |
20120232819 | DYNAMIC DISPERSION DETECTING METHOD AND APPARATUS - A dynamic dispersion detecting method and apparatus are disclosed. The apparatus includes a tunable dispersion compensation module ( | 09-13-2012 |
20120290242 | COUNTING DEVICE, PHYSICAL QUANTITY SENSOR, COUNTING METHOD AND PHYSICAL QUANTITY MEASURING METHOD - The counting device includes: a signal counter that counts the number of half cycles of input signals during given counting periods; a signal half cycle measurement unit that measures the half cycles; a frequency distribution generator that generates a frequency distribution of the half cycles; a representative value calculator configured to calculate a representative value of a distribution of the half cycles; a correction value calculator configured to calculate a total number Ns and a total number Nw | 11-15-2012 |
20120296589 | WAVEGUIDE, APPARATUS INCLUDING THE WAVEGUIDE, AND METHOD OF MANUFACTURING THE WAVEGUIDE - Provided are a waveguide capable of suppressing strain and defect caused in a semiconductor in an initial stage or during operation due to a manufacturing process or the like to realize improvement and stabilization of characteristics such as oscillation characteristics, and a method of manufacturing the waveguide. A waveguide includes a first conductor layer and a second conductor layer that are composed of a negative dielectric constant medium having a negative real part of dielectric constant with respect to an electromagnetic wave in a waveguide mode, and a core layer that is in contact with and placed between the first conductor layer and the second conductor layer, and includes a semiconductor portion. At least the first conductor layer has a particular depressed and projected structure extending in an in-plane direction. | 11-22-2012 |
20130006560 | EVALUATING NOISE AND EXCESS CURRENT ON A POWER LINE - The present document discloses several techniques of evaluating parameters relating to noise and excess current on a power line. The techniques are particularly well-suited for characterizing partial discharge, and for identifying a location of a source of the noise or excess current. | 01-03-2013 |
20130013239 | SYSTEM AND METHOD FOR EXCITATION GENERATION IN SOFT-FIELD TOMOGRAPHY - A system and method for excitation generation in soft-field tomography are provided. One method includes applying a plurality of phase modulated (or phase and amplitude modulated) excitations to a plurality of transducers of a data acquisition system positioned proximate a surface of an object and measuring a response to the applied phase modulated (or phase and amplitude modulated) excitations at the plurality of transducers. The method also includes determining a property of the object based on the measured responses. | 01-10-2013 |
20130024148 | Electromagnetic Wave Source Survey Method, Electromagnetic Wave Source Survey Program, and Electromagnetic Wave Source Survey Device - There is provided a technique in which a direction of current to be an electromagnetic wave source is precisely measured in a short time. An electromagnetic wave source survey method according to the present invention measures an absolute value of induced voltages by using three or more odd number of antennas whose arrangement angles seen from the reference position on a same plane are different from one another, and a vectorial angle of the current is calculated by using the arrangement angle of each antenna and the induced voltages (see FIG. | 01-24-2013 |
20130080097 | SYSTEMS AND METHODS TO ISOLATE LOWER AMPLITUDE SIGNALS FOR ANALYSIS IN THE PRESENCE OF LARGE AMPLITUDE TRANSIENTS - Some embodiments concern a method of isolating low amplitude signals in one or more electrical signals. The method can include: using a data acquisition device to acquire one or more electrical signals; using a first processor to compute one or more first parameters related to the one or more electrical signals; using the first processor to determine one or more first portions of the one or more electrical signal that comprise one or more transient signals; using the first processor to selectively mask the one or more first portions of the one or more electrical signals to create one or more output signals; and adjusting a gain of the data acquisition device based upon one or more second parameters of the one or more output signals. Other embodiments are disclosed. | 03-28-2013 |
20130080098 | Object Processing State Sensing Using RF Radiation - An apparatus for determining a correlation of a processing state of an object with RF feedback received from an energy application zone during processing of the object in the energy application zone may include at least one detector configured to detect the RF feedback from the energy application zone. The apparatus may also include at least one controller configured to receive from the at least one detector the RF feedback; receive an indication of one or more processing states of the object (e.g., as indicated by at least one processing state indicator); and determine a correlation between the received RF feedback and the one or more processing states. | 03-28-2013 |
20130138375 | System and Methods for Adaptive Equalization for Optical Modulation Formats - A method for modifying the performance of an adaptive equalizer in a receiver is provided. A carrier wave comprising a first polarization state and a second polarization state, wherein there is a correlation between the first polarization state and the second polarization state, is received. The first polarization state and the second polarization state are demultiplexed to generate two respective constellations. A first expected value based on the first constellation, and a second expected value based on the second constellation, are calculated. An adaptive equalizer receives a first and second signals associated with the respective polarization states. The adaptive equalizer generates outputs based on the signals. These outputs are used to generate error values. Feedback is input into the adaptive equalizer, wherein the feedback is based on the error values. | 05-30-2013 |
20130173193 | INDUCTANCE MEASURING DEVICE AND METHOD FOR MEASURING AN INDUCTANCE PARAMETER OF PERMANENT MOTOR - The present disclosure provides an inductance parameter measuring device of the permanent motor and the method thereof. The method includes: providing a d-axis given current signal and a q-axis given current signal; converting the d-axis given current signal and the q-axis given current signal to a three-phase command signal and outputting a motor control signal corresponding to the three-phase command signal, and obtaining a three-phase feedback signal, from which a d-axis feedback signal and a q-axis feedback signal is generated, based on the motor control signal; calculating a d-axis inductance and a q-axis inductance based on the first, second, third and fourth response signals when the permanent motor is in a stationary state, wherein the first, second, third and fourth response signals are respectively corresponded to the d-axis given current signal, the q-axis given current signal, the d-axis feedback signal and the q-axis feedback signal. | 07-04-2013 |
20130191061 | METHOD AND APPARATUS OF ESTIMATING/CALIBRATING TDC GAIN - A method of estimating gain of a time-to-digital converter (TDC) includes: capturing a TDC output sample; calculating a gradient in response to the TDC output sample; and adjusting a TDC normalizing gain based on the calculating step. Another method of calibrating gain of a TDC includes: capturing a phase error which is derived from a TDC output sample, a reference phase and a variable phase; calculating a gradient in response to the phase error; and adjusting a TDC normalizing gain based on the calculating step. | 07-25-2013 |
20130197841 | METHOD AND A DEVICE OF PHASED ARRAY INSPECTION WITH PULSE RATE OPTIMIZATION - Disclosed is a method and a phased array inspection device enabling calibration of the device with an optimized pulse rate, the pulse rate is derived based on the true adaptive value of the impedance of the specific phased array probe circuit or the pulser circuit and the circuit energy consumption limitations. The energy consumption limitations include the total energy made available by the power supply to the pulser and probe circuit and the pulser energy consumption with limitation due to pulser circuit's physical limit such as thermal limitation. | 08-01-2013 |
20130211758 | REFERENCE CLOCK RE-TIMING SCHEME IN ELECTRONIC CIRCUITS - A phase detector includes a counter to generate the integer portion of a number of complete cycles of an output clock at each active edge of a reference clock. A time to digital converter in the phase detector generates the fractional portion of the number of complete cycles of the output clock at each active edge of the reference clock. The sum of the fractional portion and the integer portion is subtracted from an accumulated value obtained by accumulating a pre-determined number to generate an error signal as the output of the phase detector. The counter is read at an active edge of one of two re-timed clocks derived from the reference clock. Each of the two re-timed clocks is generated based on a comparison of the fractional portion with a pair of thresholds. Errors due to metastability in reading the counter are thereby avoided. | 08-15-2013 |
20130253865 | Alternating Current Input Voltage Detection Circuit - An alternating current input voltage detection circuit comprises: a first voltage waveform detection circuit that detects a voltage waveform of one alternating current input terminal of the diode rectification circuit, based on a reference potential of the device; a second voltage waveform detection circuit that detects a voltage waveform of the other alternating current input terminal of the diode rectification circuit, based on the reference potential of the device, and a voltage waveform generation circuit that: calculates a first detection voltage waveform, which is output from the first voltage waveform detection circuit, and a second detection voltage waveform, which is output from the second voltage waveform detection circuit; generates a voltage waveform signal, in which waveform distortions generated in the first detection voltage waveform and the second detection voltage waveform are eliminated; and outputs the voltage waveform signal as the voltage detection signal. | 09-26-2013 |
20130325382 | SIDE-CHANNEL ANALYSIS APPARATUS AND METHOD BASED ON PROFILE - A side channel analysis apparatus based on a profile includes a waveform collection unit configured to collect leaked information from a target device of a side channel analysis; and a preprocessing unit configured to preprocess a waveform data correspond to the leaked information collected from the waveform collection unit before analyzing same. Further, the side channel analysis apparatus includes an analysis unit configured to analyze the waveform data preprocessed in the preprocessing unit; and a profile configuration unit configured to make each process of the waveform collection unit, the preprocessing unit, and the analysis unit into a process and configure a profile for managing each process by connection of each process. | 12-05-2013 |
20130346004 | PHASE-LOCKED LOOP - A phase-locked loop is provided for estimating a phase angle of a three-phase reference signal. The phase-locked loop includes a device for calculating an estimated first state and an estimated second state at a fundamental frequency on the basis of the reference signal and the estimated fundamental frequency, a device for calculating a fundamental positive sequence component of the reference signal on the basis of the first state and the second state, a device for calculating a direct component and a quadrature component in a reference frame synchronous with the phase angle on the basis of the fundamental positive sequence component and an estimated phase angle, and a device for determining estimates of the estimated fundamental frequency and the estimated phase angle on the basis of the quadrature component. | 12-26-2013 |
20140025328 | STUN DEVICE TESTING APPARATUS AND METHODS - A method of testing an electric discharge stun device includes the steps of identifying a stun device to be tested and absorbing a discharge from the stun device into a tester. The discharge is characterized by a discharge characteristic that is then compared automatically to information such as (a) a previous corresponding characteristic associated with a previous discharge of the stun device or (b) a corresponding characteristic associated with a prior discharge of at least one other stun device. The characteristic can be a waveform, a peak voltage, duration, current, joule, and temperature. | 01-23-2014 |
20140039821 | METHOS OF SCANNING, ANALYZING AND IDENTIFYING ELECTROMAGNETIC FIELD SOURCES - A method of determining the energy level of an electromagnetic field (EMF) received from an EMF source (EMFS) and for identifying the EMFS is provided, the method using a plurality of EMF sensing apparatuses to combine data gathered by the apparatuses in order to identify the level and the sources of the EMF at locations over time. Historical and anticipated EMF-related data is used to warn a user of EMF levels above a preset value. Past, current and future anticipated EMF levels are adapted to be displayed on a map. Methods thereof, apparatuses thereof and computer-readable mediums storing the methods are within the scope of the present invention. | 02-06-2014 |
20140058692 | MULTILEVEL TRIGGERING SYSTEM FOR OUTPUTTING COMPLEX TRIGGER SIGNAL - A multilevel triggering system of a signal analysis instrument outputs a complex trigger signal. The triggering system includes a trigger controlled buffer for receiving and buffering an input signal, triggering function modules, and a triggering matrix. Each triggering function module performs a corresponding triggering function for detecting a corresponding triggering condition. The triggering matrix includes multiple triggering levels, each of which is configurable to include at least one trigger block and each trigger block being configurable to implement one of the triggering function modules. Each trigger block generates a corresponding block trigger when the triggering condition of the corresponding triggering function module is detected in the buffered input signal. Each triggering level generates a corresponding level trigger when the at least one trigger block in the triggering level generates the corresponding block trigger, and the triggering matrix generates the complex trigger signal when the triggering levels generate corresponding level triggers. | 02-27-2014 |
20140067300 | TIME STRETCH ENHANCED RECORDING SCOPE - A time-stretched enhanced recording scope (TiSER) is described using time stretch analog-to-digital conversion in a real-time burst mode. A chirped optical signal is modulated in response to receiving segments of an input signal. The optical signal with its modulated input signal, is stretched through an optical medium and digitized to represent the waveform segment. TiSER provides ultra-fast real-time sampling within short segment bursts of the original input signal while providing an ability to detect non-repetitive events. Methods and apparatus are also described for providing real-time information about inter-symbol information (ISI), rapidly determining bit-error rates (BER), performing time-domain reflectometry (TDR), generating eye diagrams for serial data, facilitating digital correction of data, clock recovery, optical carrier phase recovery, and otherwise increasing the speed and/or accuracy of a diverse range of high-speed signal measurement and processing activities. | 03-06-2014 |
20140129168 | APPARATUS AND METHOD FOR ANALYZING DISTRIBUTION OF ELECTROMAGNETIC WAVE IN RADIO WAVE SYSTEM - Disclosed are an apparatus and a method for analyzing a distribution of electromagnetic waves using a 4-port transverse electromagnetic (TEM) cell in a radio wave system. The apparatus for analyzing a distribution of electromagnetic waves in a radio wave system includes: an input unit configured to apply a reference electrostatic potential to an inside of a 4-port transverse electromagnetic (TEM) cell in which electronic devices are located; a calculation unit configured to calculate electrostatic potentials inside the 4-port TEM cell using a mode matching scheme; an analysis unit configured to analyze the distribution of electromagnetic waves inside the 4-port TEM cell through the electrostatic potentials inside the 4-port TEM cell; and an output unit configured to output the distribution of electromagnetic waves inside the 4-port TEM cell. | 05-08-2014 |
20140136134 | METHOD AND APPARATUS FOR CALCULATING ELECTROMAGNETIC WAVE FROM ELECTRONIC DEVICE - A method of calculating an electromagnetic wave, includes measuring an electromagnetic wave emitted from an electronic device using an electromagnetic-wave scanner; and receiving the electromagnetic wave as input to detect an electromagnetic wave value in a proximity plane at a prescribed first distance from the electronic device. Further, the method includes calculating an electromagnetic wave at a point by a second distance from the electronic device using the electromagnetic wave value. | 05-15-2014 |
20140188418 | PULSE PROCESSING DEVICE AND RADIATION MEASURING DEVICE - Provided is a pulse processing device that accelerates signal processing and prevents counting loss. Provided also is a radiation measuring device in which counting loss is prevented and counting capacity is increased by installing the pulse processing device. The processing device is in a form of a pulse processing device including a pulse detection unit that outputs a linear pulse signal in response to a physical event, a high-speed AD conversion unit that converts the linear pulse signal into digital pulse data, a threshold data setting unit that outputs preset threshold data, a peak value data detection unit that compares the digital pulse data with the threshold data and outputs the maximum digital pulse data, from among the digital pulse data continuously exceeding the threshold data, as maximum peak value data, and a signal processing unit that inputs the peak value data as a pulse wave height. | 07-03-2014 |
20140257727 | Method for Angle-Preserving Phase Embeddings - One or more signal are embedded by producing complex-valued measurements of the signal by measuring the signal using a complex measurement matrix. Then, only a phase of the complex-valued measurements are retinas, such that angles of the signal are preserved. Subsequently, the phases, which can be quantized and stored in a database, can be searched to locate similar signals based only on their phase angles. | 09-11-2014 |
20140303917 | PRECISE ESTIMATION OF ARRIVAL TIME OF SWITCHING EVENTS CLOSE IN TIME AND SPACE - Methods and systems for estimating arrival time of switching events include measuring two or more emission events from a device under test under different skew conditions. The two or more emission events are close in time and space when no skew condition is applied. The measured waveforms of the two or more emission events are analyzed with associated skew conditions to determine a skew value that corresponds with a time separation between the two or more emission events. | 10-09-2014 |
20140324372 | SYSTEM AND METHOD FOR ANALYZING VOLTAGE BREAKDOWN IN ELECTROSTATIC CHUCKS - A system, instructions and a method of determining when an impending failure is likely to occur absent corrective action are disclosed. The system samples the output of a power supply which powers an electrostatic chuck, and determines when that output is outside acceptable limits. The output is sampled at a sufficiently high frequency so as to detect transient anomalies, which are not detectable at lower sampling rates. In some embodiments, the output is converted to a frequency spectrum. The empirical model is compared to known good reference models and, in some embodiments, failure reference models of known failure modes to determine whether an impending failure will occur, and which type of failure. | 10-30-2014 |
20140365153 | SENSORLESS MONITORING OF ELECTRIC GENERATOR ROTOR UNBALANCE - Embodiments relate to sensorless and continuous monitoring of electric generator rotor unbalance. An aspect includes measuring instantaneous speed of a generator rotor based on an electrical waveform from the generator. A speed flutter is extracted from the electrical waveform. The speed flutter of embodiments represents a time-based distortion of the electrical waveform. Accordingly, a magnitude of generator rotor unbalance is then quantified proportional to the speed flutter. | 12-11-2014 |
20150088445 | DYNAMIC CHARACTERISATION OF AMPLIFIER USING MULTIPLE ENVELOPE SHAPING FUNCTIONS - A method of characterizing an envelope tracking amplification stage, the method comprising: generating an input test waveform which is representative of an input waveform under normal operating conditions of the amplification stage; applying a respective one of a plurality of different shaping functions, each comprising a non-linear transfer function, to the input signal envelope in each of a plurality of test periods during the period in which the input test waveform is applied as the input signal to generate the input to the envelope tracking modulated supply voltage; measuring parameters of the amplification stage during the period in which the input test waveform is applied in order to allow determination of the gain, phase and efficiency characteristics of the amplifier; and for each of the gain, phase and efficiency characteristics, generating a three dimensional plot of the characteristic with respect to input power and supply voltage applied to the amplifier. | 03-26-2015 |
20150094975 | WAVELET TRANSFORM SYSTEM AND METHOD FOR VOLTAGE EVENTS DETECTION AND CLASSIFICATION - Wavelet transform systems and methods for voltage events detection and classification are provided and include a wavelet multiresolution analysis-based real time detection and classification for voltage events, as developed on a LabVIEW® platform. In the wavelet transform systems and methods for voltage events detection and classification, a finest detail level is utilized to detect the start time, the end time, and the duration of the voltage events, whereas a coarsest approximation level is used to classify the voltage event types. The wavelet transform systems and methods for voltage events detection and classification are applied on several typical short duration voltage events, such as sag, swell, and interruption. | 04-02-2015 |
20150134284 | METHOD FOR DETERMINING THE ANGULAR OFFSET BETWEEN THE ROTOR AND THE STATOR OF AN ELECTRICAL MACHINE OF A MOTOR VEHICLE - The invention relates to a method for determining the angular offset between the rotor and the stator of an electrical machine for driving a motor vehicle, the rotor being supplied with a rotor-energizing current and voltage, the stator being supplied over three phases with stator-phase currents and voltages, wherein the method includes the following steps: verifying that the electrical machine is stopped; applying a rotor-energizing signal for an amount of time capable of causing the partial magnetization of the rotor; applying a rotor-de-energizing signal capable of causing an active and rapid demagnetization of the rotor, while measuring, during the magnetization, the stator-phase currents and maintaining zero voltage among the phases of the stator; determining the direct stator currents and quadrature stator currents corresponding to the stator-phase currents measured by applying Park and Clarke transforms and in accordance with a measurement of the electrical position of the rotor; determining the maximum values among the direct and quadrature stator currents; transmitting an angular offset fault signal if the absolute value of the maximum quadrature stator signal is greater than a threshold value; determining a correction of the angular offset in radians by calculating the tangent arc of the maximum quadrature stator current value divided by the maximum value of the direct stator current. | 05-14-2015 |
20150309092 | Current Pattern Matching Method for Non-Intrusive Power Load Monitoring and Disaggregation - A harmonic-characteristics based current pattern matching method for the non-intrusive power load monitoring and disaggregation is provided in this present invention, on the basis of establishing the load signature database, which comprises electrical appliance registration and load state word space initialization, data acquisition and data preprocessing, feasible state word space search based on table looking-up, the optimal matching of current pattern, and display and output of the monitoring and disaggregation results. The method improves the accuracy of disaggregation, and can achieves exact identification of operating states of appliances, and also can reduce the cost. | 10-29-2015 |
20150316613 | MULTI-BANK DIGITAL STIMULUS RESPONSE IN A SINGLE FIELD PROGRAMMABLE GATE ARRAY - An apparatus that moves stimulus data and response data between a memory and a device under test (DUT) over a plurality of data transfer banks. In a first mode the data transfer banks output the stimulus data to the DUT as respective independent banks of serial stimulus data channels, and write the response data into the memory responsive to data provided as respective independent banks of channels of serial data from the DUT. In a second mode the data transfer banks output the stimulus data to the DUT as a single bank of combined serial stimulus data channels, and write the response data into the memory responsive to the data provided as a combined single bank of channels of serial data from the DUT. | 11-05-2015 |
20160025785 | MOBILE ELECTRIC FIELD SENSOR BASED PHASOR MEASUREMENT UNIT FOR MONITORING AN ELECTRIC POWER GRID - A system may include an electric field sensor, an analog to digital converter, and an estimator. The electric field sensor may measure electric fields of electric power grid. The analog to digital converter may generate digital output based upon measurements from the electric field sensor. The estimator may estimate phasor data of the electric power grid based upon the digital output. | 01-28-2016 |
20160062331 | APPARATUS AND METHOD FOR VALIDATING THE INTEGRITY OF CONTROL SIGNALS IN TIMING DOMAIN - The present application relates to a signal integrity module for validating one or more control signals in time domain and a method thereof. The one or more control signals are received via a signal input from at least one control signal generating unit. A new signature is generated by a signature generating unit on the basis of a current signature and the state of the one or more control signals at a watch point. The current signature is latched into a signature register upon receiving a trigger signal. The latched signature is representative of the time course of the one or more control signals at the watch point over a monitoring period defined by the trigger signal. The latched signature is compared by a signature comparator with a pre-calculated signature to validate the integrity of the one or more control signals with respect to the time domain. | 03-03-2016 |
20160076912 | INDUCTIVE DISPLACEMENT MEASURING SENSOR AND METHOD FOR OPERATING THE LATTER - In an inductive displacement measuring sensor for measuring the distance, the spatial orientation, the thickness, the material properties or the like of a target object, which sensor has a transmitter element which emits a pulsed signal and a receiver element for detecting a pulse response caused by the emitted pulsed signal in the target object, provision is made, in particular, for the detected pulse response to be immediately evaluated using an artificial neural network. | 03-17-2016 |
20160084896 | Flashlamp Degradation Monitoring System and Method - A method for monitoring degradation of a flashlamp including triggering the flashlamp to produce a light pulse, monitoring at least one parameter as a function of time to obtain a pulse waveform of the light pulse, comparing the pulse waveform to at least one reference pulse waveform to determine a difference therebetween, and flagging an end-of-lamp-life condition when the difference exceeds a predetermined threshold. | 03-24-2016 |
20160103165 | APPARATUS AND METHOD FOR DETERMINING STATISTICAL MEAN AND MAXIMUM EXPECTED VARIANCE OF ELECTROMAGNETIC ENERGY TRANSMISSION BETWEEN COUPLED CAVITIES - Some embodiments include an apparatus for determining statistical mean and maximum expected of electromagnetic energy transmission between coupled cavities. Other embodiments of related apparatuses and methods are also disclosed. | 04-14-2016 |
20160154041 | A Synchrophasor Measurement Method Applying to P Class Phasor Measurement Unit (PMU) | 06-02-2016 |
20160171139 | Calculation Method of Switching Waveform of the Inverter and Circuit Simulation Model | 06-16-2016 |
20160252543 | LOW NOISE ZERO CROSSING DETECTION FOR INDIRECT TIRE PRESSURE MONITORING | 09-01-2016 |