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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...
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...
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). The...
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 subset....
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....
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 6...
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...
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...
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...
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...
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...
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...
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...
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...
6574573 Spectrum analysis and display method time series  
A spectrum analysis method and apparatus for processing and displaying time series data. The time series data in digital form is decomposed into a plurality of frequency components by means of a...
6564160 Random sampling with phase measurement  
Repetitive sampling of a data signal is performed. A clock reference is generated. The clock reference has a known period relationship with the data signal. The clock reference and the data signal...
6560567 Method and apparatus for measuring on-wafer lumped capacitances in integrated circuits  
A novel test structure is described which can be used to accurately measure on-wafer impedances. For example, accurate measurements of the parasitic capacitances inside active devices such as...
6556932 System and method for reconstruction of spectral curves using measurements from a color sensor and a spectral measurement system model  
By using a reconstruction algorithm, based on the spectral characteristics of the illumination source and a color sensing system, a spectral curve reconstruction device converts measurements from...
6549861 Automated system and method for spectroscopic analysis  
An automated method for modeling spectral data is provided, wherein the spectral data generated by one of diffuse reflectance, clear transmission, or diffuse transmission. The method includes...
6549860 Method and apparatus for tuning a megasonic transducer  
A method and apparatus for selecting an optimum frequency for driving a transducer in a megasonic cleaning system. The method comprises the steps of selecting a plurality of frequency values that...
6545485 Ultrasonic pinpointer for power system sources of interference  
An ultrasonic RFI source locator implements signal analysis to discriminate ultrasonic shocks emanating from power line equipment sources from ambient and other interference sources, as well as...
6539319 Automatic wavelet generation system and method  
A wavelet generator for defining wavelets that represent a first signal includes a programmable filter bank, a frequency band controller coupled to the programmable filter bank, and a wavelet...
6529844 Vector network measurement system  
A vector network analyzer (VNA) is provided with three test ports and an integration of hardware and software to make an integrated set of measurements for two and three port devices. The...
6529838 Method of and apparatus for predicting vehicle interior noise  
A jig is successively mounted on each of the four wheels of a vehicle. The jig is struck in three orthogonal directions independently, and at the same time, a microphone inside the vehicle...
6522988 Method and system for on-line hearing examination using calibrated local machine  
Improved approaches to assist those having hearing loss are disclosed. One approach pertains to providing on-line hearing loss testing. The on-line hearing loss testing can be self-performed...
6519541 Multiple frequency signal detector  
A method for characterizing a dual frequency (DF) signal including the steps of sampling the signal at a sampling frequency vs so as to obtain a sequence of signal samples, and obtaining an...
6502043 Process and device for reducing the spectral line noise inside an aircraft, especially a rotating-wing aircraft, in particular a helicopter  
Process and device for reducing the spectral line noise inside an aircraft, especially a rotating-wing aircraft, in particular a helicopter. Said device (1) comprises sensors (Ca, Cb) for...
6499002 System and method for generating a noise index for a mechanical system  
A method and system for generating a noise index for a mechanical system in which noise data is acquired over a predetermined frequency range. A fundamental harmonic frequency is chosen and this...
6470285 Method and apparatus for multi-parameter digital pulse pileup rejection  
A method and apparatus for rejecting signals exhibiting pulse pile-up and devices incorporating the method and/or apparatus. A pulse sensor senses pulses and an analog-to-digital converter...