Matches 101 - 150 out of 326 < 1 2 3 4 5 6 7 >
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6934650 Noise signal analysis apparatus, noise signal synthesis apparatus, noise signal analysis method and noise signal synthesis method  
FFT section 102 transforms a windowed input noise signal into a frequency spectrum. Spectral model storing section 103 stores model information on spectral models. Spectral model series...
6933693 Method and apparatus of detecting disturbances in a centrifugal pump  
The present invention is directed to a centrifugal pump wherein voltage and current data are detected from voltage and current sensors in the motor controller of a pump motor. A power signal is...
6931336 Method of detecting an integrated circuit in failure among integrated circuits, apparatus of doing the same, and recording medium storing program for doing the same  
A method of detecting a failure in an IC, based on spectrum which is a result of analyzing a frequency of a current running through an IC when a test signal is applied to the IC, including (a)...
6922645 Augmented classical least squares multivariate spectral analysis  
A method of multivariate spectral analysis, termed augmented classical least squares (ACLS), provides an improved CLS calibration model when unmodeled sources of spectral variation are contained in...
6907367 Time-series segmentation  
A method for segmenting a signal into segments having similar spectral characteristics is provided. Initially the method generates a table of previous values from older signal values that contains...
6904381 Testing of a frequency converter device  
A user interface is presented for a tester that tests a frequency converter having an input port, an output port and a local oscillator port. In a first area, a user can specify frequency for an...
6898537 Measurement of diffracting structures using one-half of the non-zero diffracted orders  
A process of modeling a diffracting structure with normally incident radiation and the radiation diffracted from the structure includes constructing an optical model of the diffracting structure...
6892152 Method for identifying a signal source  
A method for identifying a signal source in a predetermined space, the method including inventorying a set of identified signatures corresponding to a plurality of signal sources and recording a...
6882946 Spectral analysis measurement apparatus and method of measuring for spectral analysis measurement apparatus  
A measuring apparatus includes a spectrum analysis unit having an input for receiving an input signal to be measured. The input signal includes a carrier signal located within a predetermined band...
6873921 Detecting persons concealed in a vehicle  
An improved method for detecting the presence of humans or animals concealed within in a vehicle uses a combination of the continuous wavelet transform and a ratio-based energy calculation to...
6862541 Method and apparatus for concurrently estimating respective directions of a plurality of sound sources and for monitoring individual sound levels of respective moving sound sources  
A method and apparatus enabling information including respective angular directions to be obtained for one or more sound sources includes a sound source direction estimation section for...
6862542 Erythema measuring device  
The present invention provides an erythema meter comprising a light guide that carries light of two specific wavelengths (probing and reference) at two distinct frequencies that are generated and...
6856926 Frequency margin testing of bladed servers  
A frequency margin testing blade is adapted for use in a bladed server. The testing blade is further adapted to provide one or more output clock signals for use as clock inputs to one or more...
6856927 Method and apparatus for the characterization of optical pulses and modulators  
A method and apparatus for the characterization of optical pulses and modulators includes modulating, using a modulator, a train of optical pulses, measuring a spectrum of the modulated train of...
6853932 Monitoring system and method implementing a channel plan and test plan  
A channel plan with a corresponding test plan are implemented in connection with a plurality of nodes that communicate signals. The channel plan has one or more predefined specifications for each...
6853933 Method of identifying spectral impulses for Rj Dj separation  
A method for identifying spectral impulses applies a window filter to an acquired waveform to produce a filtered waveform, and performs an FFT function on the filtered waveform to produce a...
6839145 Optical profilometry of additional-material deviations in a periodic grating  
Disclosed is a method and system for measurement of periodic gratings which have deviations which result in more than two materials occurring along at least one line in the periodic direction. A...
6836739 Frequency interpolating device and frequency interpolating method  
The spectrum of a PCM signal is divided into bands. Combinations of a reference band inclusive of a highest frequency band and another band, one of the reference band and other band being...
6823292 Tuneable filter  
A tuneable filter, for example an antenna filter in a single chip radio receiver, comprises a frequency selective circuit ( 12 ) including passive reactive components. At least some of the reactive...
6820017 Method for determining the amplitude and phase angle of a measuring signal corresponding to a current or voltage of an electrical power supply network  
A method for determining the amplitude and phase angle of a measuring signal corresponding to a current or a voltage on an electrical power supply network by using sampled values of the measuring...
6816616 Header compression for image data stream  
Headers of image frames are compressed. Header of a first frame is received, where the header includes a plurality of header parameters. Further, differences are determined between the header...
6813580 Method and system of automatic bandwidth detection  
A method for measuring a bandwidth of a signal path between a data source and a data recipient involves sending a block of test data from the data source along the signal path to the data...
6810341 Time varying harmonic analysis including determination of order components  
A system and method for analyzing order components present in a physical signal X acquired from a physical system. Measurement information for the physical signal X may be received, where the...
6810342 Method for the noise-free evaluation of radar signals  
According to the invention a reference measurement is carried out without or with only one measurement object and the frequencies of the noise fraction are determined for the resulting frequency...
6804617 Field distribution measuring method and device  
A field distribution measuring method for measuring a spatial distribution of an electric field or a magnetic field at a plurality of sampling points. The method includes the steps of continuously...
6789029 Method and apparatus for signal extraction in an electronic sensor  
A method for extracting components from signals in an electronic sensor ( 50 ) having a sensing element ( 52 ). The sensing element ( 52 ) generates a first signal ( 60 ) and a second signal ( 62...
6780158 Signal processing method and pulse wave signal processing method  
A first signal and a second signal are provided as two continuous signals having an identical fundamental frequency. A first spectrum which is either one of a frequency spectrum or a frequency...
6775629 System and method for estimating one or more tones in an input signal  
System and method for estimating signal parameters (e.g., frequency, amplitude and/or phase) of one or more tones present in an input signal. Samples of the input signal are received, and a...
6772077 Electric arc monitoring systems  
Electric arc monitoring is effected by exploiting the discovery that electric arcs are fractal phenomena in that all essential information that signifies “arc” is contained in each fractal...
6760674 Audio spectrum analyzer implemented with a minimum number of multiply operations  
A spectrum analyzer that may be implemented by a simple microcontroller that does not have a hardware multiply function is disclosed. The spectrum analyzer of the present invention utilizes at...
6735539 Fourier transform for timestamped network data  
Spectrum estimates of unevenly spaced timestamped data collected over a network. Unevenly spaced data is not suitable for processing by traditional methods such as Fast Fourier Transforms. Spectrum...
6721673 Estimating a plurality of tones in an input signal  
A system and method for estimating parameters of multiple tones in an input signal. The method includes receiving samples of the input signal, generating a frequency transform (FT) of the samples,...
6708128 Device, computer program product and method for indicating a function deviation of one or more details of manufacturing equipment using frequency component analysis  
A device, method and computer program product are disclosed for indicating a function deviation of one or more details of manufacturing equipment using frequency component analysis for analyzing...
6690977 Data processor and data processing method for wavemeter  
A DSP#B 6 executes, prior to data conversion, interpolation (see FIG. 2 ) in order to interpolate discrete spectra obtained via the FFT processing by a DSP#A 5 . In the interpolation, the DSP#B...
6691051 Transient distance to fault measurement  
A method of determining distance to fault of a transient event in a transmission system uses per frequency triggered I and Q data representing voltage and phase of a return signal in the frequency...
6687630 Low leakage technique for determining power spectra of non-coherently sampled data  
A technique for determining the amplitudes of frequency components of a waveform sampled from an automatic test system includes assembling a list of N frequencies expected to be found in the...
6687628 Enhanced signal analysis in an amplitude versus frequency format  
A signal analyzer has a display with two regions. In a first region there is displayed a first waveform representing a signal. The first waveform is shown in two dimensions. One dimension...
6687631 Laplace transform impedance spectrometer and its measurement method  
A method of measuring impedance is based on carrier function Laplace transform. The measurement includes detecting a response signal from a device under test, to which signal an excitation such as...
6681191 Frequency domain analysis system for a time domain measurement instrument  
A frequency domain analysis system incorporated into time domain measurement instrument has duration and resolution controls that respectively adjust the acquisition time intervals of a waveform...
6678641 System and method for searching selected content using sensory data  
The invention illustrates a system and method of searching for a specific segment within a stream of content data comprising: receiving a stream of sensory data corresponding with the stream of...
6665622 Spectral characterization method for signal spectra having spectrally-separated signal peaks  
A spectral characterization method accurately characterizes an applied signal spectrum that has multiple, spectrally-separated signal peaks. The method detects signal peaks within the spectrum and...
6662135 Method and apparatus for reflective mixer testing of a cable modem  
A method and apparatus for performing an operability test on a communications system device such as a cable modem is provided. The testing method comprises the steps of providing a set of output...
6651016 Jitter-corrected spectrum analyzer  
An analog signal is digitized by an analog-to-digital (A/D) converter clocked by a periodically jittery clock signal. Elements of the digital data sequence (vector) output of the A/D converter are...
6647280 Method and apparatus for processing a physiological signal  
A signal processing method, preferably for extracting a fundamental period from a noisy, low-frequency signal, is disclosed. The signal processing method generally comprises calculating a numerical...
6622100 Hyperspectral analysis tool  
A system and method for assessing the probability of detection of a target of a hyperspectral sensing system. The system is adapted to calculate the probability of detection of targets based on...
6615149 Spectral diagnostics in a magnetic flow meter  
A magnetic flow transmitter provides a coil driver output at a selected fundamental to a coil on a flow tube carrying a flow of a liquid. An amplifier amplifies an electrode signal from the flow...
6615162 Noise reducing/resolution enhancing signal processing method and system  
A noise reduction/resolution enhancement signal processing method and system is disclosed, wherein the influence of noise spikes and gaps is substantially reduced. The data for the noise reduction...
6584419 System and method for enabling an operator to analyze a database of acquired signal pulse characteristics  
A pulse management system configured to perform a plurality of pulse measurements on each of a plurality of pulses of an acquired signal and to store results of the pulse measurements in an...
6577965 Linear multichannel detection system for billing by spectrum convolution  
A linear multichannel detection system for billing by spectrum convolution applicable in telecommunications systems, capable of detecting the metering pulses in a signal sent from a telephone...
6577967 Automatic adjustment of velocity scale and pulse repetition frequency for doppler ultrasound spectrograms  
An ultrasound transmitter generates ultrasound signals at an adjustable pulse repetition rate. A Doppler unit generates Doppler signals from ultrasound backscattered signals and stores them in a...
Matches 101 - 150 out of 326 < 1 2 3 4 5 6 7 >