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6782330 |
Satellite signal waveform monitor
The present invention is a system for providing GPS users with a high level of confidence in the integrity and accuracy of received GPS signals. A waveform monitor allows the GPS satellite to...
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6771170 |
Power system waveform capture
A circuit monitoring system for performing synchronized waveform capture. A waveform capture trigger communication network interconnects a plurality of monitoring devices. The system provides...
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6757617 |
Multiple fan monitoring circuit for monitoring a number of fans utilizing a single sense input
A multiple fan monitoring circuit for use with a plurality of fans, wherein each of the fans operates at a different frequency and generates a tach signal indicative of the fan operation, including...
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6754598 |
Electromagnetic interference analysis method and apparatus
A method of analyzing an electromagnetic interference amount of an LSI includes an equivalent impedance information calculating step of calculating and estimating equivalent impedance information...
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6751564 |
Waveform analysis
A method extracts information from a signal, the signal having properties which vary with respect to time. The signal includes a finite number of component signals, the component signals in...
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6751566 |
Sampling digitizer, method for sampling digitizing, and semiconductor integrated circuit test device with sampling digitizer
A sampling digitizer comprises a sampling head 11, a clock generator 12, a digitizer 13 and a trigger circuit 14. A clock signal from the clock generator is also supplied to a delay element...
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6751565 |
Fast waveform display method and system
Waveform data contains waveform signals having transition events and is subdivided into data blocks. Indexing elements are provided for each waveform signal that correspond to a time range of the...
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6748335 |
Acquisition system for a multi-channel relatively long record length digital storage oscilloscope
A real time multi-channel digital storage oscilloscope acquires a relatively long data record for each channel in an acquisition memory and processes the data of the relatively long data record to...
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6745139 |
CAE waveform assessor
A CAE waveform assessor 10 is provided, including a CAE resultant waveform 12 and a reference waveform 16 . The CAE waveform assessor 10 utilizes a time domain assessor 18 to produce a...
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6741953 |
Acquisition unit and method for infrequent capturing of data samples with associated timing information
A data acquisition circuit and method according to embodiments of the invention insert overflow states into a data storage unit among samples of input data and associated time tags that are of...
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6735538 |
Apparatus and method for measuring quality measure of phase noise waveform
A clock signal x c (t) that has been converted into a digital signal is transformed into a complex analytic signal z c (t), and an instantaneous phase Θ of the z c (t) is estimated. A linear phase...
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6732058 |
Method and apparatus for computation reduction for tone detection
Various methods and apparatuses are provided for performing a radix-M FFT (Fast Fourier Transform) upon N time domain samples to produce N/S frequency domain samples for detecting tones of dithers...
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6728648 |
Test and measurement instrument having telecommunications mask testing capability with an autofit to mask feature
Initial mask and waveform positions on a display screen may be determined by an AUTOSET TO MASK function. Upon detection of violations that occur after the AUTOSET TO MASK function is complete,...
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6717984 |
Method for analyzing a sample waveform in the time domain
A method of analyzing a sample waveform in the time domain. Firstly, a periodic wave, such as a sinusoidal wave, is inputted into a waveform processing module for obtaining a sample waveform. Next,...
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6707474 |
System and method for manipulating relationships among signals and buses of a signal measurement system on a graphical user interface
A system is disclosed for manipulating buses and signals on a display window of a graphical user interface of a logic analyzer. Each signal is associated on the display with representations of its...
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6704670 |
Systems and methods for wideband active probing of devices and circuits in operation
Systems and methods for wideband active probing of devices and circuits in operation are provided. One such embodiment includes a probe amplifier housing that at least partially contains a probe...
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6694273 |
Receiving apparatus, method of compensating for waveform degradation of received signal, apparatus and method for detecting waveform degradation, and apparatus and method for measuring waveform
In a receiving apparatus, there are included a compensation characteristic variable type waveform degradation compensating unit capable of compensating for waveform degradation of a received signal...
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6690398 |
Logic analyzer with mixed textual and graphical trigger specification
A logic analyzer integrates the capabilities of both textual and graphical description into a common environment, so that each can be used as needed, and in conjunction with the other. In an...
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6691050 |
Data acquisition instrument architecture with flexible data acquisition, processing and display
An electronic instrument includes instrument hardware. A data acquisition engine schedules time sharing of the instrument hardware. Channel objects act each as a client of the data acquisition...
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6684169 |
Facilitating comparisons between simulated and actual behavior of electronic devices
A system for analyzing the behavior of electronic devices includes a first database for storing simulation values and a second database for storing actual waveform values. The system further...
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6681199 |
Peak time detecting apparatus and method
A product-sum operation portion for performing a product-sum operation (wavelet transformation) with respect to an input time-series signal by using as a base of integral a complex function in...
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6668234 |
Method and apparatus for calculating the amplitude of a complex waveform associated with a rotating machine shaft after removing the running speed frequency
A sampled data system for computing the amplitude of a signal received from a vibration sensing probe minus the fundamental frequency associated with the running speed of a rotating machinery...
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6668159 |
Terminal bitrate indicator
A bit rate indicator for use in the mobile station of a radiotelephone system which provides an indication to the user of the maximal bit rate available in the current cell and the predicted bit...
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6665621 |
System and method for waveform processing
A data reduction circuit serves as a post-processor for digitized waveform data, providing reduced data sets for subsequent processing. Preferably, the data reduction circuit receives one or more...
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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...
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6662125 |
Electromagnetic wave analyzer and program for same
An electromagnetic wave analyzer and program which can handle non-uniform cells with smaller computation errors. A given computational domain is divided into a plurality of cells for the purpose of...
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6636816 |
Vector signal analysis method and apparatus therefor
An error-suppression signal measurement system and method therefor is provided. The system transmits a test signal from a first probe, through a device under test, and into a second probe. The...
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6631481 |
Method and apparatus for injecting an error into a waveform sent over a data link
A method for injecting an error into a waveform sent over a data link includes the following: The data link is monitored for a control event such as a symbol in the waveform. In response to the...
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6629049 |
Method for non-harmonic analysis of waveforms for synthesis, interpolation and extrapolation
A method according to which a discrete waveform is multiplied by a sine function having an arbitrary period. The product is summed over a selected interval to derive a first summation and...
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6624829 |
System and method for specifying trigger conditions of a signal measurement system using hierarchical structures on a graphical user interface
A system is disclosed for enabling a user to specify a trigger condition of a signal or bus by enabling the user to graphically select the signal or bus from a hierarchically arranged list of...
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6621920 |
Print pattern recognition apparatus, recognition method, and information storage medium
A print pattern recognition apparatus includes a storage unit which stores a plurality of signal waveform data, which is extracted according to a predetermined condition from standard read signal...
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6622117 |
EM algorithm for convolutive independent component analysis (CICA)
In connection with blind source separation, proposed herein, inter alia, are: expectation-maximization equations to iteratively estimate unmixing filters and source density parameters in the...
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6615148 |
Streaming distributed test and measurement instrument
A “Streaming Distributed Oscilloscope” (SDO) architecture comprises at least one channel including a preamplifier module, a Digitizer Module, and an Acquisition Memory Module. An SDO couples...
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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...
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6601014 |
Dynamic deviation
A method and related apparatus and software of detecting anomalies in a stream of data values. The method comprises the steps of: receiving a data value on the stream of data; calculating a new...
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6598001 |
Method of analyzing acquired signals for automatic location thereon of at least one significant instant
A method for automatic analysis of signals acquired by one or more elastic or acoustic wave pickups to automatically locate with high precision, at least one significant instant such as the time of...
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6591205 |
Pseudo arbitrary waveform generator
A method of waveform generation using a VLSI digital tester unit without an arbitrary waveform generator. A software application produces a series of vectors to drive a digital tester unit from a...
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6571186 |
Method of waveform time stamping for minimizing digitization artifacts in time interval distribution measurements
A time stamping method for threshold crossing points of an input signal uses a dithered threshold level. Digital data samples are acquired for the input signal and time marks are determined for the...
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6567760 |
Electro-optic sampling oscilloscope
An electro-optic sampling oscilloscope (or EOS oscilloscope) uses an electro-optic probe containing an electro-optic crystal, which is placed under effect of an electric field caused by a measured...
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6560566 |
Signal analysis process
A process for analyzing a signal which composed of a sequence of discrete amplitude values to which portions with different phase angle contribute. Here, a reshaped signal is formed in which the...
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6549859 |
Method of time stamping a waveform edge of an input signal
The time stamping method for an input signal generates time marked digital data values as a reference edge and defines at least a first time stamp in the reference edge. Digital data samples of the...
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6546361 |
Method for recording and removing the bipolar bias from a vibration input signal
A method for recording and removing the bipolar bias from a vibration input signal. The signal is a time varying signal where the bipolar bias has an amplitude which is many times greater than the...
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6546345 |
System and method for measuring extinction ratio and deterministic jitter
A system and method of measuring extinction ratio and deterministic jitter of an optical transceiver. The measurement system includes a computing node and an oscilloscope coupled to the computing...
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6545681 |
Method of displaying a stream of digital data on display area of a predetermined size
Disclosed are methods of graphically displaying digital data containing a predetermined number of digital values, on a display area containing a lower, predetermined number of graphical display...
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6542836 |
Waveform signal analyzer
The waveform signal analyzer of the present invention is equipped with: input means 10 that inputs a waveform signals; period detection means 20 that detects the period of the waveform signals...
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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...
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6539318 |
Streaming architecture for waveform processing
An oscilloscope apparatus and method of processing waveform data using a streaming architecture. The apparatus has multiple processing objects (processors) that share a common cache memory in which...
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6532423 |
Method for determining fluid flow characteristic curves of heat-dissipating system
A method for determining a plurality of fluid flow characteristic curves of a heat-dissipating system, wherein each fluid flow characteristic curve is a relationship curve of one of an air pressure...
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6529923 |
Method for improving the accuracy in the determination of a waveform center of a waveform signal
Prior to performing a centroid calculation on a waveform signal that is discretely sampled at a limited number of sample points, the last sample point (V N , A N ) is eliminated if the magnitude of...
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6529842 |
Process and machine for signal waveform analysis
Highly accurate time interval measurement is achieved for an electrical waveform. The electrical waveform is sampled and converted to a series of voltages, and the series of voltages is...
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