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7613579 |
Generalized harmonicity indicator
The invention disclosed herein provides a method and apparatus for analyzing periodic signals so as to determine the degree of harmonicity in real time. Harmonicity estimates are generated for each...
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7610175 |
Timestamping signal monitor device
A signal monitor device that detects a signal propagating on a signal line and that generates a timestamp when the signal is detected. The timestamp may be used in a variety of applications...
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7603245 |
Blind estimation of bandwidth and duration parameters of an incoming signal
A method and system for blind estimation of time and frequency parameters of an incoming signal. A spectrogram of the signal is processed using singular value decomposition (SVD) and ICA...
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7596461 |
Measurement of air quality in wireless networks
A system for measuring air quality in wireless networks. In particular implementations, a method includes computing an interference severity level for a plurality of interference sources detected...
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7590152 |
Router-based monitoring of EF-on-EF jitter
A system for monitoring EF-on-EF jitter in a network node having an EP output queue into which EF packets are entered comprises a first counter that counts the packets entering the queue and also a...
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7574338 |
Finite-difference simulation and visualization of elastodynamics in time-evolving generalized curvilinear coordinates
Modeling and simulation of free and forced structural vibrations is essential to an overall structural health monitoring capability. In the various embodiments, a first principles finite-difference...
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7574313 |
Information signal processing by modification in the spectral/modulation spectral range representation
Processing of information signals separated according to modulation and carrier components in a more controlled way is made possible by a device for processing an information signal including a...
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7574253 |
Signal processing using non-linear regression with a sinusoidal model
A method for processing signals, such as a tomography signal, in the time domain provides both high spatial resolution and high frequency resolution but at low cost. The method uses non-linear...
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7571064 |
Display digital signal visualizations with increasing accuracy
Digital signal visualizations may be displayed with increasing accuracy as the signal data is processed. According to one embodiment, an entire digital signal visualization is displayed as data...
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7567877 |
System and method for computing the frequency of a low frequency wave
The present invention provides a system for computing the frequency of a low frequency wave. The system includes: a wave producer ( 3 ) configured for sending out a first wave with a high...
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7567871 |
Automatic material labeling during spectral image data acquisition
A system for performing spectral microanalysis delivers analysis results during the course of data collection. As spectra are collected from pixels on a specimen, the system periodically analyzes...
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7562001 |
Creating a behavioral model of a hardware device for use in a simulation environment
Exemplary methods, apparatuses, and products are described for creating a behavioral model of a hardware device for use in a simulation environment. The behavioral model is created by an iterative...
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7555394 |
Measuring circuit and a method for determining a characteristic of the impedance of a complex impedance element for facilitating characterization of the impedance thereof
A single chip integrated circuit measuring circuit ( 1 ) for determining a characteristic of the impedance of an external complex impedance circuit ( 2 ) for facilitating characterization of the...
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7552370 |
Application specific distributed test engine architecture system and method
An Application Specific Distributed Test Engine (ASDTE) that provides an optimized set of test resources for a given application. The test engine resources, configuration, functionality, and even...
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7552017 |
Tailpulse signal generator
A tailpulse signal generating/simulating apparatus, system, and method designed to produce electronic pulses which simulate tailpulses produced by a gamma radiation detector, including the pileup...
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7546208 |
Method and apparatus of signal processing for use in spectrometry using an improved apodization function
A method and apparatus is disclosed for signal spectrometry using an improved apodization function. Such method and apparatus involve (i) obtaining sample and reference time domain waveforms; (ii)...
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7536663 |
Method and apparatus for quantifying the timing error induced by an impedance variation of a signal path
In one embodiment, a plurality of signals are sequentially driven onto a signal path. Each of the signals has a pulsewidth defined by a trigger edge and a sensor edge, and at least some of the...
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7532989 |
System for analysis and design of direct digital frequency synthesizers
The present invention is embodied in a system for the analysis and design of direct digital synthesizers including a windowing engine, and a method that enables the analysis of DDS output spectra...
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7532988 |
Virtual load monitoring system and method
A method and system estimates a desired output signal waveform based on measured state parameters. A model training step generates a model by empirically obtaining measured signal waveforms...
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7529627 |
Method of sea electrical survey of oil and gas deposits and apparatus complex for its realization ‘VeSoTEM’
A method for electrical survey of hydrocarbons deposits under seabed depths up to 1500 m and equipment therefor are provided. The equipment includes a vessel, a generator, an excitation field...
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7526394 |
Quality assessment tool
Non-intrusive speech quality assessment method and apparatus for: storing a sequence of intercepted packets associated with a call, each packet containing speech data, and an indication of a...
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7523011 |
Method for analyzing signal waveform and analyzing vehicle dynamic characteristic
A signal waveform analysis method includes: determining a trend component of an object signal by applying a zero-phase filter to the object signal; determining an oscillatory component of the...
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7522661 |
Method of producing a two-dimensional probability density function (PDF) eye diagram and Bit Error Rate eye arrays
A method of producing of a two-dimensional probability density function eye diagram and Bit Error Rate eye arrays generates a two-dimensional PDF array of a correlated waveform record of a data...
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7496863 |
Nonlinear driver model for multi-driver systems
A precharacterized cell library for EDA tools includes driver model data includes output current signals indexed by output voltages. The driver model can then generate a model output by...
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7496485 |
Methods and apparatus for predicting convergence of a transversal waveform relaxation algorithm
Methods and apparatus are provided for predicting the number of iterations needed for a computed Transversal Waveform Relaxation solution to achieve a given level of accuracy. In this manner, a...
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7493223 |
Pattern identification and bit level measurements on repetitive patterns
A method of pattern identification and bit level measurements for a high speed digital signal using an oscilloscope converts an input waveform into a bit stream sequence. From the bit stream...
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7490013 |
Power grid failure detection system and method
Electric power grids are usually constantly monitored for AC frequency. The monitoring of the AC frequency, however, usually does not reveal information that would indicate impending failure in the...
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7487053 |
Refining a virtual profile library
A method of refining a virtual profile library includes obtaining a reference signal measured off a reference structure on a semiconductor wafer with a metrology device. A best match is selected of...
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7483477 |
User interface for selection of sampling parameters in a logic analyzer whose data receivers are in groups each having a separate threshold that is common to the channels within each group
Eye diagrams are made for signals on each channel in a group. Outlying signals not exhibiting overlap for a sampling parameter common for all channels may be ignored and a warning given. Selected,...
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7477999 |
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...
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7474993 |
Selection of wavelengths for integrated circuit optical metrology
Specific wavelengths to use in optical metrology of an integrated circuit can be selected using one or more selection criteria and termination criteria. Wavelengths are selected using the selection...
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7467052 |
Systems and methods for detecting discontinuous fibers in composite laminates
Systems and methods for detecting discontinuous fibers in composite laminates are disclosed. In one embodiment, a method includes transmitting an incident ultrasonic signal onto a front surface of...
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7463989 |
Waveform recorder apparatus and method
A method for recording and having analyzed waveform data associated with an electronic circuit breaker having an electronic trip unit is disclosed. The electronic trip unit has a communication port...
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7460967 |
Selectable navigation to automatically discovered events within the acquisition record of a digital sampling oscilloscope
Events discovered by an automatic measurement subsystem in the trace of a DSO are visited using a set of event navigation controls. In a TIME Mode the controls operate to display the first of those...
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7454301 |
Method and apparatus for predicting system noise
A jitter calculator engine that includes a core effects module, an input/output (I/O) module, and a phase lock loop (PLL) module is provided. The core effects module estimates core jitter caused by...
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7451049 |
Automatic delays for alignment of signals
In one embodiment, a system comprises a delay determining unit that may be operable to determine a relative delay between the first signal provided by the first source and the second signal...
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7451048 |
Method and apparatus for analyzing electromagnetic wave, and computer product
A merging unit merges partial models into an entire model, and divides a grid of a parent hierarchy into grids of a child hierarchy based on hierarchical relationship of partial models, and an...
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7440858 |
Poynting-vector based method for determining the bearing and location of electromagnetic sources
A method and apparatus is utilized to determine the bearing and/or location of sources, such as, alternating current (A.C.) generators and loads, power lines, transformers and/or radio-frequency...
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7437624 |
Method and apparatus for analyzing serial data streams
An apparatus for processing a data signal is provided. The apparatus comprises an acquisition unit of a test instrument for acquiring a data signal for a predetermined time, a memory of the test...
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7434113 |
Method of analyzing serial data streams
A method of processing a data signal is provided. The method comprises the steps of acquiring a data signal by an acquisition unit of a test instrument for a predetermined time and storing the data...
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7424380 |
Method and apparatus for integrated distribution function capture
Probability distribution functions (PDFs), of a periodic input data signal, can be used to provide eye-diagram information. An advantage of PDFs, over conventional approaches to eye-diagram...
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7421355 |
Measuring apparatus, measuring method, testing apparatus, testing method, and electronic device
There is provided a measuring apparatus for measuring a signal-under-test, having a comparator for sequentially comparing voltage values of the signal-under-test with a threshold voltage value fed...
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7415372 |
Method and apparatus for improving noise discrimination in multiple sensor pairs
Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced....
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7415370 |
Method of compressing values of a monitored electrical power signal
A method of compressing values of a waveform of a monitored electrical power signal. The method includes acquiring data representative of periods of the waveform, decomposing the waveform of the...
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7401007 |
Method, computer program and apparatus for extracting large size signal data samples with an automatically adjusted decimation ratio
A method for rapidly extracting data file samples with an a signal monitor and an automatically adjusted decimation ratio is provided to solve the long-standing problems caused by large data files...
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7400988 |
Periodic jitter (PJ) measurement methodology
Methodologies are disclosed for analyzing periodic jitter is a signal pattern using a continuous time interval analyzer. Sampled signal patterns may be correlated using time interval error...
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7398411 |
Self-calibrating time code generator
Provided is a self-calibrating time code generator and method for generating an accurate time code (e.g., an accurate IRIG waveform). The self-calibrating time code generator includes a...
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7398169 |
Measuring apparatus, measuring method, testing apparatus, testing method, and electronics device
There is provided a measuring apparatus for measuring a signal-under-test, having a comparator for sequentially comparing voltage values of the signal-under-test with a reference voltage value fed...
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7386406 |
Forced-alignment measurement tools for composite eye diagrams
An original composite eye diagram is reformulated by deliberately re-aligning its component eye diagrams according to some appropriate standard. This ‘forced-alignment’ shifts the components in...
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7383142 |
Method and apparatus for resolving individual signals in detector output data
A method and apparatus for resolving individual signals in detector output data, the method comprising determining a signal form of signals present in the data, making parameter estimates of one or...
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