Matches 1 - 45 out of 45
Match Document Document Title
7496482 Signal separation method, signal separation device and recording medium  
A method and a device for signal separation. First, values of signals observed by M sensors are transformed into frequency domain values, and these frequency domain values are used to calculate...
7439515 Pipeline processing of pulse pile-up correction in a nuclear medicine imaging system  
Correction of scintillation event data from a nuclear medicine imaging system for effects of pulse pile-up is carried out by separating event data packets into total energy and individual detector...
7421377 Method and apparatus for supressing noise in a doppler system  
Present application provides a method for suppressing noise in a spectral Doppler system, comprising the steps of: obtaining a power spectrum of Doppler signals demodulated in the spectral Doppler...
7356340 System and method for wireless coverage detection  
A system and method is shown for determining the spatial boundary of certain measurable phenomena, such as broadcast signals, at various locations within geographical areas covered by the...
7321845 Method and system for removing very low frequency noise from a time-based data set  
A method and system are disclosed for removing very low frequency noise from a time-based data set for use in data analysis of the time-based data set having a plurality of data points, the method...
7260506 Orthogonalization and directional filtering  
Systems and methods are provided for directionally filtering signals by projecting a received signal onto a subspace substantially orthogonal to selected interfering signals. The received signal...
7260163 Noise blanker using an adaptive all-pole predictor and method therefor  
A noise blanker ( 40, 106 ) monitors and removes noise from a sampled signal by adaptive filtering ( 98, 150 ) the sampled signal to generate trained adaptive filter prediction coefficients. The...
7249002 Direct relative motion measurement for vibration induced noise and drift cancellation  
A surface analysis apparatus and a method for compensating for mechanical vibrations and drifts in a surface analysis instrument are disclosed. A probe that is sensitive to the distance between the...
7216063 Method and apparatus for comparing a data set to a baseline value  
A method and system are disclosed for comparing a data set to a baseline value for use in data analysis of the data set having a plurality of data points, the method comprising providing the data...
7162397 Decoding an alternator output signal  
An engine diagnostic system is provided that enables a service technician to evaluate engine cylinder contribution to output power. The service technician couples one or more signal leads to the...
7117383 Phase difference delay control system for accommodating fluctuation in phase difference in distance measuring system  
A phase difference delay control system is provided that enables distance measurement between a reference position and a terminal at the time of recovery after a line has been disconnected as a...
7092853 Environmental noise monitoring system  
A continuous environmental noise level recording and analysis system is provided. The system is capable of sampling, processing and storing Equivalent Sound Level values over a period of about two...
7003438 Apparatus for correcting for the effects of laser noise  
Adaptive noise reduction techniques used in devices that pass light from a laser through a quantum medium such as a rubidium vapor cell. A CPT frequency standard that employs the techniques has a...
6990252 System for manipulating noise in digital images  
An apparatus for analyzing the broadband noise content of a digital image comprising the following: a means of automatically identifying regions of originally constant color in the image by...
6987227 Weight detecting apparatus with vibrational sensors attached to both the free end and the fixed end of the load cell  
The weight detecting apparatus includes a weight detecting load cell having a fixed end fixed to a fixed base arranged on a floor and a free end bearing a weight of an object, a first vibration...
6941027 Method of and system for automatically determining a level of light falloff in an image  
An image processing system includes an image collector and a light falloff correction system. The light falloff correction system comprises a polar transformer that converts an image into radial...
6772100 Multipath mitigation filter  
A technique for estimating the position of an object from sensor measurements in the presence of multipath conditions is disclosed. In one aspect, the technique includes a position estimator...
6651036 RMS-to-DC converter with fault detection and recovery  
A circuit that provides the root-mean-square (RMS) value of an input signal and that detects and independently recovers from an output fault condition is provided. The circuit includes...
6449584 Measurement signal processing method  
A method of processing data representing intensity values of a measurement signal as a function of a discrete variable such as time, which signal being characterized by series of peaks mixed with a...
6304828 System and method for calibrating a signal detection threshold circuit  
The system and method for calibrating a signal detection threshold circuit is used in a radio frequency (RF) receiver, such as a in an early warning radar (EWR) system, in which a signal detection...
6041290 Method of adaptively adjusting the coefficients of a digital filter in an echo canceller  
Digital filters are used to compensate for echoes in a transmission system in which unwanted couplings occur between a signal value in the receiving direction and a signal value in the transmitting...
5974361 Waveform reconstruction from distorted (saturated) currents  
A method employed in a condition monitoring unit (CMU) for monitoring a circuit breaker or interrupter to obtain a substantially undistorted version of a waveform suffering from saturation...
5966684 Method and apparatus for cancelling periodic electrical interference  
A system involving method and apparatus for cancelling a periodic electrical interference signal from a signal of interest is disclosed. The system of the invention creates an estimate of the...
5943641 Method and device for recovering a wanted acoustic signal from a composite acoustic signal including interference components  
The device for extracting a useful acoustic signal from a composite acoustic signal including nuisance components includes: first sensor component for picking up the composite acoustic signal;...
5862516 Method of non-harmonic analysis and synthesis of wave data  
A novel method of non-harmonic analysis of a physical waveform is disclosed. A digitized wave data is multiplied by a first sine and a first cosine function having a first predetermined period,...
5845236 Hybrid active-passive noise and vibration control system for aircraft  
A hybrid active-passive system (20) for reducing noise within a passenger compartment and vibration of a fuselage of a vehicle, such as an aircraft (turboprop, turbofan, or helicopter). The hybrid...
5842158 Method for adaptive filtering of well logging data  
The invention described herein provides for an intelligent or "adaptable" filtering method that could be applied when filtering log data. In the present invention, for a given filter model, the...
5729477 Method and apparatus for eliminating a disturbing component from a periodic signal, and application to an electronic capacitor voltage transformer  
A method of eliminating a disturbing component from a periodic signal. The method includes the steps performing at least two measurements on the signal at two distinct instants, calculating the...
5521851 Noise reduction method and apparatus  
A method and apparatus is disclosed to reduce noise which overlaps detected signals in a common frequency band for detection of distributed signals from multiple measurement points. The method...
5291426 Method of correcting spectral data for background  
A method of producing spectral data corrected for background includes generating spectral data, ascertaining background and subtracting background points to produce the corrected data. To ascertain...
5278777 Efficient cancelling of AC line interference in electronic instrumentation  
Efficient cancellation of AC power line interference from a signal received by electronic instruments, such as biomedical monitors, is obtained by efficiently estimating the magnitude and phase of...
5249150 Process and circuit to determine estimates of the instantaneous value of parameters of at least one sinusoidal signal with constant and known frequency which is an additive component of a measuring signal  
A circuit and method for iteratively estimating Fourier coefficients of one or more Fourier components of a measuring signal utilizes a filter to determine the Fourier coefficients for sampling...
5157596 Adaptive noise cancellation in a closed loop control system  
An adaptive noise cancellation system reduces undesired noise in a closed loop control system by injecting an adaptively constructed noise cancellation signal at an appropriate point in the closed...
5029118 Periodic noise canceling system and method  
A system and method for canceling a periodic noise superposed on a real signal component of an original signal. The system comprises: a synchronous adaptive noise canceling filter which...
4937769 Apparatus and method for reducing transient exponential noise in a sinusoidal signal  
The offset in digital samples of the voltages and currents in a power transmission system following a fault is reduced by subtracting a linear approximation of the exponential component of the...
4932039 Pulse interference canceler of high power out-of-band pulse interference signals  
A pulse interference canceler cancels pulse interference signals by normaing the signals and comparing in time the normalized signals to each other. An overlap of the normalized signals indicates...
4931977 Vectorial adaptive filtering apparatus with convergence rate independent of signal parameters  
An adaptive signal processor, used for discriminating between a desired signal and several undesired signals, includes an arrangement of sensors, which samples the signals and forms a set of...
4772445 System for determining DC drift and noise level using parity-space validation  
A system which measures direct current drift and noise in sensor signals from redundant sensors utilizing a parity-space algorithm. Parity vector signals produced by the parity-space algorithm are...
4649505 Two-input crosstalk-resistant adaptive noise canceller  
A two-input crosstalk-resistant adaptive noise canceller receives a primary input signal including a desired speech signal portion and an undesired noise signal portion and also receives a...
4387438 Continuous transducer drift compensator  
In a transducer signal processing system wherein the output signal generated by a transducer (14) includes a nearly d.c., relatively large amplitude drift component (12), a higher frequency end...
4351062 Method and apparatus for suppressing digital error noise in digital communication  
In digital telecommunication, the suppression of digital error noise contained in the signals received by the receiver is accomplished by subjecting the received signals to Fourier transform...
3946211 Amplitude limited filter  
A filter is provided to substantially nullify the effect of process noise of less than a preset amplitude limit on the measurement of a process variable. The filter passes on to a controller or...
3936826 N Dimensional target designation vector  
Each of the parameters of objects in the field of view is measured and inidually compared with standard parameters. Differences in these parameters are multiplied by individual weighting factors...
3784915 APPARATUS FOR IMPROVING THE SIGNAL-TO-NOISE RATIO OF A RECEIVED SIGNAL  
Device for improving the signal/noise ratio of a common signal received on three aerials utilizing correlation between the sum and difference values of combinations of the signals from the three...
3626384 METHOD FOR REPRESENTING MEASURED DATA VALUES BY COEFFICIENT VALUES  
A method is provided for reducing measured data to representative coefficient values. The data relates to physical energy collected and measured by a physical sensor, and therefore, the measured...
Matches 1 - 45 out of 45