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9029165 System and method for the analysis of DNA sequences in biological fluids  
A method for detecting electromagnetic waves derived from bacterial DNA, comprising extracting and purifying nucleic acids from a sample; diluting the extracted purified nucleic acids in an...
8901917 Element measurement circuit and method thereof  
An element measurement circuit is provided, comprising a oscillator for generating a first oscillation clock and second oscillation clock, a frequency divider for dividing the first oscillation...
8791689 Oscilloscope probe  
Disclosed is a probe for an oscilloscope comprising a multi-stage transistor amplifier that acts as an impedance transformer. Said amplifier is a d.c.-coupled emitter follower circuit that is...
8773151 Method and device for multichannel multifrequency analysis of an object  
A method for multichannel multifrequency analysis of an object, applying a set of excitation signals to the object and sampling the response signal from the object, using uniform and non-uniform...
8744025 Digital signal conditioning  
Methods, systems and other embodiments associated with pre-processing a signal for spectral analysis are presented. A system for pre-processing a digital input signal includes a digital down...
8736250 System and method for the analysis of DNA sequences in biological fluids  
A method for detecting electromagnetic waves derived from bacterial DNA, comprising extracting and purifying nucleic acids from a sample; diluting the extracted purified nucleic acids in an...
8723530 Signal acquisition system having reduced probe loading of a device under test  
A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable of the...
8717006 Method of performing synthetic instrument based noise analysis using proportional bandwidth spectrum analysis techniques  
A system and method for filtering an input signal with at least a first and a second octave portions is presented. A proportional bandwidth filter system includes a bandwidth reducing filter, a...
8638225 Input signal power sensing sentry  
The present invention is directed to a circuit device configured to monitor a sensor device. The sensor device is configured to measure a predetermined physical parameter and provide a sensor...
8514919 Synthetic instrument unit  
Systems and other embodiments associated with synthetic instrumentation are presented. A reconfigurable synthetic instrumentation unit comprises an input module, with dual input/output ports and...
8207503 X-ray detector usable at microwave frequencies  
A detector of periodic packets of X photons, each packet having a duration shorter than 0.1 nanosecond, comprising a sensor comprising a semiconductor element of type III-V biased in a negative...
8072207 Device and method for measuring the frequency of a signal coded modulated carrier signal  
A device (10) for measuring a frequency of an input signal (IN) that is expected to comprise a carrier signal (CS) either being unmodulated (CSU) or being modulated (CSM) according to a predefined...
7945407 Signal analyzers and frequency domain data production methods  
Sets of time domain data of respective frequency bands from Fd-1 to Fd-n of a periodic input signal Fs are acquired. Sets of the time domain data of the common frequency band are extracted from...
7936162 Measured-signal repetition frequency detection method, and sampling apparatus and waveform observation system using the method  
In a method of detecting a repetition frequency of a measured signal, in order to detect the waveform repetition frequency of the measured signal with high accuracy even in the presence of a...
7890062 Fast correction of power measurements of signals having a changing frequency  
Power measurements of a signal having a changing frequency are corrected by acquiring samples of the signal, matching the samples of the signal to a sequence of frequencies indexed to correction...
7746058 Sequential equivalent—time sampling with an asynchronous reference clock  
A sequential equivalent-time sampling oscilloscope simultaneously acquires samples of a signal-under-test and a reference clock that is asynchronous with the signal-under-test. The oscilloscope...
7725277 Method and device for performing a frequency analysis of an AC voltage signal, in particular on a power grid  
In a method for performing a frequency analysis of an AC voltage signal, in particular in a power mains, an upper limit of the period length of a fundamental oscillation in the AC voltage signal...
7652465 No dead time data acquisition  
A “no dead time” data acquisition system for a measurement instrument receives a digitized signal representing an electrical signal being monitored and generates from the digitized signal a...
7365527 System and method for extending the range of a frequency measuring device  
A range of a frequency measuring device having limited range is extended by pre-processing an input signal. The input signal is divided into a plurality of channels. In each channel, the input...
7355537 Built-in self-test apparatus and method for digital-to-analog converter  
A built-in self-test apparatus for a digital-to-analog converter uses a differentiation unit for differentiating a digital-to-analog (DA) signal to obtain the differences between pulses of the...
7236900 Three dimensional correlated data display  
A method and apparatus for synchronizing presentation of multi-domain measurements using actual or quasi 3-D representation. The synchronization between data streams acquired in different...
7164243 System and method for establishing motor efficiency during balanced or unbalanced operating conditions  
A system and method for establishing a plurality of operating parameters of a multiphase motor. The plurality of electrical parameters may be established from stator resistance data and electrical...
7103489 Active removal of aliasing frequencies in a decimating structure by changing a decimation ratio in time and space  
When a sample stream is decimated, frequency components from outside of a desired frequency band are aliased into the desired band, causing interference and loss of information. Different...
7043383 Frequency error detection apparatus and method based on histogram information on input signals  
A frequency error detection apparatus and method based on histogram information of an input signal. The apparatus includes an A/D converter for and converting an analog signal into digital values;...
6856924 Mixer-based timebase for sampling multiple input signal references asynchronous to each other  
Sampling is performed. A strobe signal is generated from a first signal. Multiple sampled signals are sampled using the strobe signal. Each of the multiple sampled signals is synchronous with its...
6700516 Mixer-based timebase for signal sampling  
Signal sampling is performed. A sampler takes samples of a sampled signal. A first analog-to-digital (A/D) converter receives the samples from the sampler. A clock reference is synchronous with...
6680606 Electrical sampler for non-simultaneous sampling  
An electrical sampler device has a plurality of samplers for sampling an electrical signal. Each of the samplers is responsive to a corresponding sampling point. The electrical sampler device also...
6650101 Timebase for sampling an input signal having a synchronous trigger  
A timebase establishes the timing of samples acquired by a signal sampler relative to a trigger signal that is synchronous with an input signal applied to the signal sampler. The synchronous...
6636823 Method and apparatus for motor fault diagnosis  
A method and apparatus for detecting a stator winding fault in an induction motor includes sampling instantaneous signals from the motor and then deriving sequence components of at least some of...
6614216 System and method for intersample timing error reduction  
A system clock for a system for measuring at least one given quantity having a value which does not vary significantly from a given frequency, the system clock comprises a controller for sampling...
6580278 Technique for the measurement of reflection coefficients in stored energy systems  
Methods and systems for measuring the reflection coefficient of a network are disclosed. The methods and systems measure the reflection coefficient by exciting a device under test with a driving...
6507624 Bandpass sampling architecture for wide-frequency band signal analysis  
A bandpass sampling system (10) of this invention employs a conventional mixer (14) driven by a frequency-tunable LO (16) to upconvert a signal frequency band to an IF frequency band that is above...
6442506 Spectrum analysis method and apparatus  
A method and apparatus for spectral analysis of a sampled signal are provided. According to the method, a first time interval ΔT is determined which represents a sample set over which the signal...
6424138 Spectrum analyzer utilizing a discontinuous signal record  
A high resolution cross correlation, coherent integration type spectrum analyzer for use in obtaining detailed spectral signatures of subsurface and surface vessels correlates short discontinuous...
6351729 Multiple-window method for obtaining improved spectrograms of signals  
There is disclosed a method for processing a time-varying signal to produce a high-resolution spectrogram that represents power as a function of both frequency and time. Data blocks of a time...
6329806 Process for determining the harmonic oscillations of the fundamental component of an electrical signal  
The present invention relates to a process for determining harmonic oscillations of a fundamental component of an electrical signal, wherein the signal is sampled with a sampling frequency...
6272441 Method for determining the pulse response of a broad band linear system and a measuring circuit for carrying out the method  
The invention relates to a method for the determination of the impulse response g(t) of a broad band linear system. The method can be used for the application of high frequency technology. For a...
6242899 Waveform translator for DC to 75 GHz oscillography  
A waveform translator in which the frequency spectrum of a repetitive non band limited input signal is translated to an equivalent frequency spectrum which is harmonically related to a fixed...
6233288 Spectrum analyzer  
A spectrum analyzer having an improved local oscillator for use in a digital step sweep is capable of minimizing a dynamic spurious response which is inverse proportional to a unit step time in...
6215316 Method and apparatus for measuring harmonic current sources in electric power distribution systems  
A method and apparatus provides a technique for measuring characteristics of a harmonic pollution source connected to an alternating current power distribution system. The apparatus has a harmonic...
6140809 Spectrum analyzer  
A received signal is converted in a frequency converter, an output from which is again frequency converted. The second converted output is detected by a detector and then converted into a digital...
6115675 Double interpolation anti-skew compensation of sampled analog data points in a protective relay  
A protective relay system comprises current and voltage transducers 10, filters 12, and a multiplexor 14, the latter outputting an interleaved stream of analog phase current and voltage signal...
6044332 Surface acoustic wave harmonic analysis  
A method for sensing and analyzing data with surface acoustic wave (SAW) devices comprises the steps of: propagating a sampling signal at a fundamental frequency through a SAW device coated for...
5995914 Method and apparatus for asynchronously measuring frequency shifted signals  
A method and apparatus for fast response and distortion measurement of a signal transfer device. A computer processor generates a multitone test signal of predetermined duration and stores it in a...
5900755 Phase dither of an acquisition clock using a phase lock loop  
The phase of an acquisition clock for a digital oscilloscope is modulated by summing an offset voltage with the output of the phase detector of a phase lock loop. The offset voltage is generated...
5834930 Device for sensing the period of a digitized signal including noise evaluation and averaging over a plurality of zero crossing  
A real time sensor for signal periods includes a zero crossing sensor for sensing a period of a signal and a noise evaluation circuit. If the noise of the signal is smaller than a predetermined...
5801375 Sampler module, sampling waveform measurement device using the sample module, and sampling waveform measurement method  
A sampler module is disclosed for use in a sampling waveform measurement device that samples subject signals and measures the waveform of the signals. The module is constructed by accommodating...
5742156 Digital process for obtaining a measured parameter from an electric signal  
A process for obtaining a measured value from an electric signal with a predetermined rated frequency, wherein the electric signal is scanned with a scanning frequency that is N times the rated...
5740064 Sampling technique for waveform measuring instruments  
A new sampling technique for waveform measuring instruments (including methods and circuits for implementing same) comprises the step of processing a series of digital signal samples through a...
5729124 Estimation of signal frequency using fast walsh transform  
A method of frequency estimation is disclosed which uses a Fast Walsh Transform (FWT) in place of a conventional Fast Fourier Transform (FFT) technique. The inventive method is based on a linear...

Matches 1 - 50 out of 234 1 2 3 4 5 >