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6817017 |
Universal interface system
This invention provides a universal interface system that is capable of launching software applications across operating system platforms. For example, the universal interface system allows a...
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6237017 |
Lossy technique for image and speech processing
The present invention includes a data compression system which implements transformation and quantization functions using analog devites. The system includes a transformation module with analog...
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6038579 |
Digital signal processing apparatus for performing wavelet transform
A digital signal processing apparatus comprises a sensor, a multi-valued binary level signal generator, a wavelet transform section, and a post processor. The signal generator receives analog...
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5959875 |
Analog signal characterizer for functional transformation
A signal characterizer for performing functional transformations such as Fast Fourier Transforms (FFTs), which converts an input serial analog signal into a plurality of parallel discrete signals...
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5862070 |
Discrete cosine transformation circuit
A high-speed discrete cosine transformation circuit includes the one-dimensional input signals x(0) to x(7) being input in parallel to the positive input terminals "+" or the negative input...
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5126962 |
Discrete cosine transform processing system
A three dimensional (3D) discrete cosine transform (DCT) uses one dimensional DCT networks for transforming and inverse-transforming blocks of data, such as image data. The 3D DCT configuration...
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5058049 |
Complex signal transformation using a resistive network
A resistive network is responsive to a spatial vector formed by sampling an input signal for providing the simultaneous complex transformation thereof at a plurality of outputs. A matrix...
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4841471 |
System for converting analog signals to a discrete representation without aliasing
A network of filter elements for transforming an analog signal of infinite bandwidth into a discrete filter space representation having a bandwidth equal to π. In one embodiment the filter network...
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4837578 |
Apparatus and method for range detection using the analytic signal identified from the received signal
A method and apparatus for use in a pulse-echo imaging or ranging system comprising means (32) for identifying the analytic signal from a received signal and means (34) for extracting ranging...
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4764891 |
Programmable methods of performing complex optical computations using data processing system
Methods of performing complex optical computations, preferably using a programmable optical data processor having a plurality of spatial light modulators to impress data onto a data beam. Data can...
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4754491 |
Cosine transform computing devices, and image coding devices and decoding devices comprising such computing devices
The invention provides cosine transform computing devices and image decoding devices and coding devices comprising such computing devices. One embodiment of a device for calculating monodimensional...
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4649392 |
Two dimensional transform utilizing ultrasonic dispersive delay line
The invention of this disclosure comprises a system that simultaneously determines the frequency and direction of arrival of incoming signals. The apparatus of this invention comprises a layered...
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4555770 |
Charge-coupled device Gaussian convolution method
A Gaussian convolution is produced in a CCD imager or shift register by a method involving a special clocking sequence. The principle of operation, analagous to the process of diffusion, involves...
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4525798 |
Apparatus for performing a Hadamard transformation
Hadamard transformer using charge transfer devices. The transformer comprises a charging register with at least N electrodes and doped bands making it possible to transfer the N samples charged in...
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4509135 |
Cosine signal correction circuit
A cosine signal corrector circuit as for use in a decoder for a system wherein an information signal is transmitted in the form of one trigonometric transform function of that signal. The second...
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4389673 |
Hadamard transformer using charge transfer devices
The Hadamard transformer comprises a charge transfer device having N rest electrodes preceded by N transfer electrodes, 2N reading electrodes, each rest electrode being positioned between a first...
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4386414 |
Data processing system utilizing a holographic optical element
The data processing system makes use of a holographic optical element comprised of a number of facets, each facet containing a grating pattern for diffractively redistributing input light so that...
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4357677 |
Hadamard converters employing charge transfer devices
A converter for carrying out Hadamard conversion on periodic sampled signals, such conversion giving from a sequence of N input samples another sequence of N output samples connected to the input...
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4335373 |
Method for analyzing a digital-to-analog converter with a nonideal analog-to-digital converter
A method for statistically calibrating a digital-to-analog converter with an electronic test system. The digital-to-analog converter is excited with two state signals at each input bit which...
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4308521 |
Multiple-invariant space-variant optical processing
A multiple-invariant, space variant optical processor in which two functions described by any number of separate distortion parameters can be correlated with no loss in signal-to-noise ratio of the...
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4288858 |
Inverse two-dimensional transform processor
A processor capable of performing a two-dimensional inverse transform on high speed analog data and outputing the results in a display compatible format. The processor utilizes two charge coupled...
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4282579 |
Discrete Fourier transform system using the dual chirp-Z transform
A transform system provides a real-time implementation of the discrete Foer transform (DFT) of length N, the system being useful in sonar and radar signal processing. The input signal g n ,...
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4245330 |
Elastic surface wave Hadamard transformer
An elastic surface wave transformer comprises a receiver transducer and an emitter transducers on a substrate capable of transmitting elastic surface waves. The transformer comprises a single track...
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4204262 |
Optical signal processing apparatus
Signal processing apparatus having the capability to perform simultaneous space-time processing of sonar, radar and similar time-varying signals, and to effect the Fourier transform of multiple...
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4156858 |
Charge transfer transversal filter
A transversal filter of the split electrode type employing a bucket-brigade device (BBD) is described. The BBD wells extend beyond the edges of the clocked gates of the BBD below second gates of...
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4152772 |
Apparatus for performing a discrete cosine transform of an input signal
Apparatus for performing a discrete cosine transform of an input signal, table for real-time television image processing, specifically for obtaining an acceptable picture when the number of bits of...
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4099250 |
Haddamard electronic readout means
A device for performing Haddamard transform operations including a first matrix of interconnected electronic cells, and a second matrix of interconnected electronic cells connected to the output of...
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4092725 |
Electronic transform system
An electronic system providing discrete mathematical transforms includes a charge-coupled transversal filter, a pair of sample and hold circuits connected to the output of the filter, and a...
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4084255 |
Positional, rotational and scale invariant optical correlation method and apparatus
A method and electro-optical apparatus for correlating two functions, f 1 (x,y) and f 2 (x,y) which are shifted, scaled and rotated versions of each other without loss of signal-to-noise and...
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4084257 |
Signal processing apparatus
An analog memory apparatus for storing and retrieving a sequence of samples of an analog signal is described. The apparatus includes a plurality of storage devices each storing each of the samples...
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4073010 |
Correlation methods and apparatus utilizing mellin transforms
Correlation methods and apparatus are disclosed which make use of Mellin transforms that are scale and shift invariant. There is no loss in the signal-to-noise ratio of the correlation, and data is...
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4061017 |
Structural analysis system
A system for determining the modal characteristics of a structure in which a plurality of driving signals which have a common preselected frequency and a preselected set of amplitudes and phases...
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4049958 |
Programable filter using chirp-Z transform
A transform structure employing surface wave devices performs Fourier transform operations on a time-limited substantially band limited signal. The output signal of the transform structure is...
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4016567 |
CCD range-doppler processor
Signal processing wherein signals are processed using chirp-Z-transform (CZT) techniques and charge transfer device (CTD) transversal filters. The chirp weighting signal may be amplitude modulated...
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3971927 |
Modular discrete cosine transform system
Apparatus for performing an even discrete cosine transform (EDCT) on an it signal of size 2N, with components for an EDCT of size N, which comprises four similar modules, for performing an extended...
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3969699 |
Image dissector with many apertures for Hadamard encoding
An improved image dissector camera tube system for improving the signal-to-noise ratio in which the aperture plate of the image dissector has a plurality of apertures, the apertures individually...
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3940602 |
Signal processing imager array using charge transfer concepts
A signal processing sensor which utilizes a combination of charge transfer devices and signal processing concepts which simultaneously measures the incident optical signal and performs a linear...
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3803395 |
METHOD OF AN APPARATUS FOR PROCESSING OF SIGNALS TO TRANSFORM INFORMATION BETWEEN THE TIME DOMAIN AND FREQUENCY DOMAIN
A method of and apparatus for signal processing to transform information between the time domain and frequency domain (Fourier transform) wherein a time-varying electromagnetic signal to be...
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3800131 |
HILBERT TRANSFORMER
The present inventive transformer is comprised of a first and second channel with the first channel transforming an input signal by a desired function and providing as an output the transformed...
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3705981 |
SEQUENCY FILTERS BASED ON WALSH FUNCTIONS FOR SIGNALS WITH TWO SPACE VARIABLES
The present invention relates to a sequency sampling filter based on Walsh functions for signals having two space variables, x and y. Voltages derived from the x, y plane of a space domain are...
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3592547 |
OPTICAL MATRIX-PROCESSING SYSTEM AND OPTICS
An optical processing system which performs a general matrix transformation. Analog data to be transformed is entered as a first set of inputs written upon a first writing medium in the form of...
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3510640 |
METHOD AND APPARATUS FOR INTERPOLATION AND CONVERSION OF SIGNALS SPECIFIED BY REAL AND COMPLEX ZEROS
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3442264 |
DATA PROCESSING METHOD AND MEANS
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2963647 |
Electrical transient analyzer
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3553723 |
Title is not available
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