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7428541 |
Computer system, method, and program product for generating a data structure for information retrieval, and an associated graphical user interface
A computer system for generating data structures for information retrieval of documents stored in a database. The computer system includes: a neighborhood patch generation system for defining patch...
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7349932 |
High performance FIR filter
A filter includes a tap multiplication circuit and a tap digital-to-analog (“DAC”) unit coupled to the tap multiplication circuit. Further, a plurality of clocks are provided that control...
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7346639 |
Method and apparatus for suppressing limit cycles in noise shaping filters
Harmonic interference caused by limit cycles occurs in the resultant signals of filters for noise conversion as a consequence of limit cycles. A feedback loop is connected downstream of the actual...
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7340019 |
Programmable filter
Briefly, in accordance with one embodiment of the invention, a programmable filter may implement an infinite impulse response filter so that a transceiver in which the filter is utilized may be...
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7319659 |
OFDM receiver, mode detector therefor, and method for processing OFDM signals
A method of mode detection for OFDM signals. The method comprises the steps of delaying the OFDM signal for a first and second number of samples, multiplying the two delayed signals by coefficient...
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7191100 |
Method and system for predictive physiological gating of radiation therapy
A method and system for physiological gating for radiation therapy is disclosed. A method and system for detecting and predictably estimating regular cycles of physiological activity or movements...
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7051063 |
Integrated low power channel select filter having high dynamic range and bandwidth
A channel select filter circuit is disclosed using a current-mode transconductance-capacitor (gm-C) architecture, which is tuned by digitally controlled capacitor arrays. The main filter includes...
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7039139 |
System for increasing digital data demodulator synchronization timing resolution using training sequence correlation values
A demodulator for demodulating digital data includes a receiver for receiving a digital data signal, a determining device to determine if a fractional sample delay added to a demodulator's symbol...
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7028070 |
High speed filter
An electronic filter operates as a correlator that provides a discrete approximation of an analog signal. The analog to digital conversion is integrated directly approximation calculation. An array...
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6996291 |
Systems and methods for correlating images in an image correlation system with reduced computational loads
After one or both of a pair of images are obtained, an auto-correlation function for one of those images is generated to determine a smear amount and possibly a smear direction. The smear amount...
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6993458 |
Method and apparatus for preprocessing technique for forecasting in capacity management, software rejuvenation and dynamic resource allocation applications
A system and method preprocesses data, in a computer system where forecasting of computing resources is performed based on past and present observations of measurements related to the resources....
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6990435 |
Tactile sensing method and system
A system for detecting tactile information includes strain-gauge touch sensors and a controller. Based on the sum output from each of tough-sensor sensor units, an analyzer in the controller...
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6895362 |
Active broken rail detection system and method
A system to monitor the integrity of a railway track is provided. The system comprises a mechanical signal source and a correlation detector. The mechanical signal source coupled to the railway...
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6829625 |
Correlation value calculating device
A correlation value calculating device which has a small scale of circuitry, and allows template vectors to be rewritten. One template vector is written to one row of DRAM memory cells. One memory...
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6701028 |
Method and apparatus for fast signal convolution using spline kernel
A fast convolution method applicable to convolve a signal with a smooth kernel that can be approximated by a spline kernel, and a system configured to perform such method using software or signal...
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6681220 |
Reduction and optimization of information processing systems
Techniques for arranging operations performable on information in an information processing system are provided. In a system having a plurality of information producers and a plurality of...
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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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6594595 |
Apparatus for and method of measuring cross-correlation coefficient between signals
Timing jitter sequences Δφ j [n] and Δφ k [n] of respective clock signals under measurement x j (t) and x k (t) are obtained, and a covariance σ tj,tk =(1/N)Σ i=1 N Δφ j [i]·Δφ k [i] is...
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6456646 |
Methods and systems for detecting codewords with intersymbol interference and imperfect timing
Methods and systems are provided whereby correlations between a received signal sample set and a plurality of potential codeword data set are determined and a potential codeword with the highest...
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6434488 |
Alignment free methodology for rapid determination of differences between a test data set and known data sets
A method for generating data characterizing an item described by an ordered string of characters, comprises the steps of: (i) for a set of separation metrics each representing a unique number of...
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5930157 |
Autocorrelation coefficient operator having analog circuit element
The autocorrelation coefficient operator 60 carries out an integration operation to determine the autocorrelation coefficient for audio signal processing or other types of signal processing at high...
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5896304 |
Low power parallel correlator for measuring correlation between digital signal segments
Correlation between a pair of digital signal segments is measured by apparatus including a plurality of multipliers. Each of the multipliers produces the product of a respective sample of each one...
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5623431 |
Aligning a given signal with a corresponding reference signal
A segment of a given signal is aligned with a corresponding reference segment by passing the reference segment through a full-wave rectifier (8), an anti-alias filter (10) and a first sampler (9),...
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5579014 |
Parallel correlator for global positioning system receiver
A correlator for identifying global positioning satellites includes an antenna at a central location for receiving signature signals from a plurality of the satellites. Each received signal is...
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5574889 |
Apparatus for selecting and evaluating design based on stored information
The invention is a design evaluation apparatus for evaluating a design composed of a plurality of design elements. The apparatus has a database stored therein. The database contains design...
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5565764 |
Digital processing method for parameter estimation of synchronous, asynchronous, coherent or non-coherent signals
The parameters of a digital signal are extracted by the application of autocorrelation and crosscorrelation techniques to effectively measure the frequency and time behavior of a digital signal....
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5555514 |
Method of and apparatus for generating doppler sounds
Method and apparatus for generating Doppler sounds, even when there are segmented Doppler modes, wherein I and Q components of a Doppler signal are respectively converted into left and right sound...
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5523758 |
Sliding correlator for nanosecond pulses
A digital sliding correlator having means for producing a series of time-shifted stored copies of a digital character, means responsive to said shifted, stored copies of the character for...
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5426785 |
Comparator stack architecture for order statistic filtering of digital imagery
This is a circuit design for determining the order statistics of an arbitrary (length and value) string of numbers as the string is acquired. The circuit is intended for use with a system covered...
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5406586 |
Signal correlation technique
The present invention relates to correlation apparatus in which samples of a received signal are demultiplexed and coupled to a plurality of correlators in cyclic fashion so that successive samples...
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5404320 |
Autocorrelation processing method and apparatus
Autocorrelation processing finds a series of equally spaced pulses and noise. Pulses that are very narrow with inter-pulsed durations of several hundred times the width of the pulse are processed....
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5305243 |
Method and device for comparing two variable analogue signals
A device compares two variable analogue signals, e.g. varying in time, such as audio or video signals. The signals, which are either different or identical but shifted in time, are within a...
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5262968 |
High performance architecture for image processing
The logical computer architecture is specifically designed for image processing, and other related computations. The architecture is a data flow concept comprising three tightly coupled components:...
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5218558 |
Output circuit of a charge-coupled device
A detection system for detecting information using a charge-coupled device comprises a charge-coupled device supplied with a clock pulse having a predetermined frequency and producing an output...
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4982439 |
Fine-grained microstructure processor
A Fine-Grained Microstructure Processor (FMP) (10) for solving assignment and correlation problems that utilizes a pair of arrays (22, 24) of cells (26) to represent the position of two set of...
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4974202 |
Optical associative memory employing an autocorrelation matrix
An optical associative memory produces an electrical correlation matrix pattern from an inputted electrical reference pattern and an electrical recall pattern, and converts the electrical...
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4965759 |
Spread-spectrum receiver
A correlation pulse generator used in a receiver of a spread spectrum communication system comprises peak hold circuit for holding peak values of positive and negative correlation spikes, threshold...
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4943556 |
Superconducting neural network computer and sensor array
A combination of optical interconnect technology with superconducting matal to form a superconducting neural network array. Superconducting material in a matrix has the superconducting current...
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4920506 |
Ultra-high speed two-dimensional coordinate transform processor
An ultra-high speed two-dimensional coordinate transform processor (10) contains layers having conducting lines representing coordinate lines in coordinate systems. Layers in a first set have...
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4918730 |
Process and circuit arrangement for the automatic recognition of signal sequences
An arrangement for automatically recognizing signal sequences such as spe and/or music signals, particularly useful for statistical evaluation of the frequency of play of music titles, commercial...
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4912519 |
Laser speckle velocity-measuring apparatus
There is provided a laser speckle velocity-measuring apparatus comprising: a semiconductor laser to irradiate the light to a moving object; first and second photo sensing devices whose light...
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4910695 |
Code correlation arrangement
A code correlation arrangement comprising clock means for sampling (11) an analogue input signal, means for generating a digital code sequence (14), means for clocking (15) the code generating...
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4885713 |
System for digitizing the trajectory of a target point of a moving beam
The trajectory across a surface of an intended target point of a moving beam directed toward the surface is digitized by finding a particular point along each of a plurality of parallel axes of the...
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4843562 |
Broadcast information classification system and method
Method and apparatus for classifying broadcast information first receives the broadcast information and processes it to provide a plurality of a low bandwidth analyzed waveforms. The analyzed...
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4823293 |
Correlation time-difference detector
A detecting instrument for detecting time difference between input times of two signals through the use of correlation function is disclosed. The instrument includes a digital circuit for...
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4813006 |
Analog-digital correlator
An analog-digital correlator 10 utilizes a plurality of sample and hold cirucits 16-0 to 16-(M-1) to directly store samples of a received analog signal. Bits of a correlation pattern are shifted...
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4809194 |
Image processing system and method using modulated detector outputs
An image processing system 10 includes an array (12) of detectors 14, each of which is designed to produce a current proportional to incident radiation. This system provides image processing at a...
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4777605 |
Method and apparatus for identifying the components of a signal
Fast Fourier Transform methods of analyzing signal frequencies spectra yield results from zero frequencies upwards. Thus, when the frequency band of interest is not at very low frequencies a lot of...
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4763290 |
Apparatus for performing a fast Fourier transform
In a railway vehicle safety system, a frequency modulated signal is transmitted to a vehicle informing, inter alia, of a safe maximum speed, the said speed being represented by the carrier...
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4747054 |
Method for non-linear signal matching
A process for non-linear matching of time analog signals, particularly seismic signals, that have generally similar response characteristics but different time bases is disclosed. The process...
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