Matches 1 - 39 out of 39


Match Document Document Title
US20110112779 POWER QUALITY METER AND METHOD OF WAVEFORM ANAYLSIS AND COMPRESSION  
A method for waveform analysis and compression includes determining harmonic components of a waveform, subtracting the harmonic components from the waveform, leaving a residual waveform, and...
US20130341922 Method and module for measuring the rate of change of frequency of waveforms related to converter units in wind turbine generators  
Method and module for measuring the rate of change of frequency of a waveform related to a converter unit of a wind turbine generator, comprising: measuring an instantaneous value of said rate of...
US20110152703 Heart monitoring system or other system for measuring magnetic fields  
A system includes at least one first magnetic field sensor configured to measure first and second magnetic fields. The system also includes at least one second magnetic field sensor configured to...
US20120239328 WAVEFORM ANALYZER AND WAVEFORM ANALYSIS METHOD  
A waveform analyzer includes a converter which converts a logical function, where a pair of data including a time and a value at the time is variable, created according to data sets of a time and...
US20140222357 INTELLIGENT ELECTRONIC DEVICE WITH ENHANCED POWER QUALITY MONITORING AND COMMUNICATIONS CAPABILITY  
An intelligent electronic device IED has enhanced power quality and communications capabilities. The IED can perform energy analysis by waveform capture, detect transient on the front-end voltage...
US20120059613 SIGNAL PARAMETER ESTIMATOR  
A signal parameter estimator includes curve fitting of multiple ideal spectral shapes.
US20130158922 ESTIMATION OF A QUANTITY RELATED TO IMPEDANCE  
Method, arrangement and network node/device for estimating a quantity related to impedance in a first frequency interval, D1, of a telecommunication transmission line where the transmission line...
US20090187362 Interference Rejection Through Circle Fitting  
A method and apparatus for measuring electrical signals measures an electromagnetic wave having an interference component at a center frequency and at multiple times to obtain data points. The...
US20080221814 METHODS AND APPARATUS FOR DETERMINING PARTICLE CHARACTERISTICS BY MEASURING SCATTERED LIGHT  
An instrument for measuring the size and characteristics of a particle contained in a sample of particles. A particle sample is introduced into a sample chamber. The sample particles are subjected...
US20110144787 METHOD AND SYSTEM FOR NON-DESTRUCTIVE DISTRIBUTION PROFILING OF AN ELEMENT IN A FILM  
A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum...
US20100204992 METHOD FOR INDENTIFYING AN ACOUSIC EVENT IN AN AUDIO SIGNAL  
An process for recognizing an acoustic event in an audio signal has two stages The first stage involves possible candidates being selected, and the second stage involves each of the possible...
US20130231883 APPARATUS AND METHOD FOR PERFORMING BURST TRIGGERING IN A TEST AND MEASUREMENT INSTRUMENT  
A test and measurement apparatus, system, and method for synchronizing an acquisition or triggering system to a specific burst of interest. The subject apparatus and method triggers on varying...
US20090030628 SIGNAL ANALYSER  
A method of processing a signal comprises receiving a signal, filtering the signal with a plurality of band pass filters, each band pass filter having a Q factor of at least 1/v2, and extracting...
US20080162061 Pattern Testing Apparatus, Pattern Testing Method, and Pattern Testing Program  
The present invention has an object of realizing a defect inspection estimated at high accuracy by preparing a reference image that reflects the change of the blur with time from a sampled image...
US20080027665 Surface inspection apparatus and surface inspection method  
A semiconductor wafer, which is an inspection object, is stuck by vacuum on a chuck and this chuck is mounted on an inspection object movement stage consisting of a rotational stage and a...
US20120010835 INTRUSION DETECTION SYSTEM WITH SIGNAL RECOGNITION  
An intrusion detection system comprises an intrusion detector, preferably a microphone for picking up infrasound, and a signal processor. Signals from the detector are split into two channels of...
US20120116703 METHOD AND APPARATUS FOR ENHANCED SPATIAL BANDWIDTH WAVEFRONTS RECONSTRUCTED FROM DIGITAL INTERFEROGRAMS OR HOLOGRAMS  
The present invention discloses a method and an apparatus to compute a complex wavefield, referred to as the object wave o, by means of measuring the intensity signal resulting from the...
US20090306919 SAMPLING APPARATUS, SAMPLING METHOD AND RECORDING MEDIUM  
Provided is a sampling apparatus that samples a signal under measurement, including a sampling section that samples the signal under measurement with a plurality of sampling phases at non-uniform...
US20140012526 LOGICAL TRIGGERING IN THE FREQUENCY DOMAIN  
A frequency mask trigger capable of triggering based on a logical combination of two or more areas of a frequency mask transforms a frame of digital data representing an input signal into a...
US20080046185 METHOD AND APPARATUS FOR PROCESSING AN UNDER-SAMPLED CHIRPED SINUSOIDAL WAVEFORM USING A COMPLEX-HETERODYNE  
A method of processing data acquired by under-sampling a chirped, sinusoidal waveform comprises complex-heterodyning the under-sampled data with a chirped signal having characteristics similar to...
US20080215270 SYSTEMS AND METHODS FOR MONITORING MOVING DEVICES  
This present specification provides, amongst other things, an electro-optical monitoring system for obtaining a once-per-revolution signal based on the surface reflection of a rotating device that...
US20080173820 PORTABLE RADIATION DETECTION APPARATUS AND SPECTROMETRIC ANALYSIS METHOD  
A portable radiation detection apparatus is provided to transform detected radioactivity into an analog pulse signal and then convert the analog pulse signal into a digital pulse signal....
US20100228508 APPARATUS AND METHOD FOR PERFORMING BURST TRIGGERING IN A TEST AND MEASUREMENT INSTRUMENT  
A test and measurement apparatus, system, and method for synchronizing an acquisition or triggering system to a specific burst of interest. The subject apparatus and method triggers on varying...
US20100010761 METHOD AND DEVICE FOR MONITORING A SYSTEM  
The present invention relates to a method and a device for monitoring a system such as a cable. Pulses propagating in different directions are distinguished by measuring and sampling current and...
US20100088048 Method And Device To Predict A State Of A Power System In The Time Domain  
A method to predict a state of a power system and a device to perform the method are presented, where the method includes the step of performing a Fast Fourier Transform on samples of a periodic...
US20130346006 Dectection-enhanced adjustable bandwidth apparatus  
An apparatus and method for providing spectrum sensing. The invention accepts as inputs a spectrogram or any other time frequency representation of signals in which the resulting two-dimensional...
US20120072152 Systems and Methods for Monitoring Moving Surfaces  
This present specification provides, amongst other things, an electro-optical monitoring system for obtaining a once-per-revolution signal based on the surface reflection of a rotating device that...
US20080071488 Method and apparatus for evaluating data  
A method and apparatus for evaluating data are provided. The method comprises the steps of acquiring waveform data, performing one or more measurements on the waveform data to generate measurement...
US20050015211 System, method, and program for estimating gene expression state, and recording medium therefor  
A gene expression state estimating system according to the present invention includes an input device 1 for inputting microarray data, a program-controlled data analyzer 2, and an output device 3....
US20110184650 UTILITY AND METHOD FOR THE APPLICATION OF SIGNAL ADVANCE AMPLIFICATION TO ANALOG WAVEFORM OR SIGNAL DETECTION, ACQUISITION AND PROCESSING  
An analog waveform signal detection/data acquisition system that is based on negative group delay for reducing inherent delay in analog waveform or signal detection and acquisition and...
US20080243410 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD  
Provided are an image forming apparatus and an image forming method which are capable of obtaining an image of a measured object using a relatively simple structure in a short time. In the image...
US20110112784 Method and apparatus for adaptive real-time signal conditioning and analysis  
The present invention constitutes a method, processes, and apparatus for measurement and analysis of variables of different type and origin. In particular, the invention presents a method and...
US20100250168 Accurate Magnetic Field Sensor and Method for Wireless Phasor Measurement Unit  
A phasor measurement unit and method including a transducer for transduction measurement of an electrical characteristic of a current carrying element in electrical power generation or...
US20100211343 SYSTEMS AND METHODS FOR MONITORING MOVING DEVICES  
This present specification provides, amongst other things, an electro-optical monitoring system for obtaining a once-per-revolution signal based on the surface reflection of a rotating device that...
US20140350879 MEASURING METHOD AND MEASURING APPARATUS  
A charge potential distributed over a vehicle body resulting from the contact, separation, and friction between a tire and a road surface is detected by a detecting unit provided with a sensing...
US20130166239 METHOD FOR GENERATING INFORMATION SIGNAL  
A signal generation method for generating an information signal F(b) by performing a Fourier transform on a signal f(a) includes the following steps: detecting the maximum peak intensity of the...
US20130113659 DETECTION OF SIGNALS  
Described herein is a method and apparatus for the detection of signals in an area of interest. Three sensor channels are provided for sensing radiated emissions in an area of interest, each...
US20130018614 COMPARISON OF DATA SIGNALS USING CHARACTERISTIC ELECTRONIC THUMBPRINTS EXTRACTED THEREFROM  
A characteristic thumbprint is extracted from a data signal, the thumbprint based on statistics relating to the data signal. The data signal can be compared indirectly by matching this thumbprint...
US20120310569 METHODS AND APPARATUS FOR MEASURING THE FUNDAMENTAL FREQUENCY OF A LINE SIGNAL  
The present invention provides methods, apparatus, and systems of measuring frequency. The invention includes sampling a first number of full cycles of a signal at a rate based on a nominal...

Matches 1 - 39 out of 39