Class 708/820 - Transform

Subclass of Class 708 - Electrical computers: arithmetic processing and calculating
Definition: Subject matter wherein the function performed is transforming
No. of patents: 39
Last issue date: 03/15/2011

Number	Title	Issue Date
7908309	Analog wavelet transformer A method of transforming an analog electrical signal into a wavelet transform. The analog electrical signal is input into a transmission line system as a transmission line input signal. A wavelet transform lifting is performed on the transmission line input signal t...	03/15/2011
7023481	Solid state imaging device for alleviating the effect of background light and imaging apparatus including same In a solid state imaging apparatus of the present invention, first and second charge-coupled devices (CCDs) 336A and 336B are prepared as two charge accumulation circuits for one photodiode 330. The first and second CCDs 336A and 336	04/04/2006
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 computer using a Microsoft Windows operating system to launch and execute ...	11/09/2004
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 devices (22), a quantization module with analog devices (24) ...	05/22/2001
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 signals output from the sensor and converts them to multi-value...	03/14/2000
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 using an analog-type serial-to-parallel converter. The disc...	09/28/1999
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 terminals "-" of eight neural operation units (NOU) 11 to 18 thro...	01/19/1999
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 uses DCT transform coding to remove both the spatial and temp...	06/30/1992
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 representation of the sum of products estimation of the complex tran...	10/15/1991
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 includes Laguerre filter elements. Other embodiments incl...	06/20/1989
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 information from the analytic signal. The analytic signal can b...	06/06/1989
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 be applied to a subset of the modulators so as to impress ...	08/16/1988
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 cosine transforms by blocks of 16 values comprises: three...	06/28/1988
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 half space dispersive delay line which is utilized as a beam...	03/10/1987
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 the deliberate intermixing of adjacent charge packets in a ...	11/26/1985
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 the charging register to the transformer calculating regis...	06/25/1985
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 trigonometric transform function signal, required for decodi...	04/02/1985
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 reading electrode and a second reading electrode and 2N tra...	06/21/1983
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 output light from a facet or a combination of facets repres...	05/31/1983
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 samples by a linear relationship which can be represented b...	11/02/1982
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 together represent a single signal with uniform amplitude probab...	06/15/1982
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 correlation. The unknown distortion parameters can also b...	12/29/1981
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 devices (CCD's), two matrix multipliers, which each perform...	09/08/1981
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 gn, 0ࣘnࣘN-1, comprises a discrete signal, generally com...	08/04/1981
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 and the emitter transducers are arranged behind one anoth...	01/13/1981
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 time-varying signals through electro-optical photoelastic mea...	05/20/1980
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 different areas. These mask programmed second gates provide ...	05/29/1979
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 information available for describing the picture and/or ...	05/01/1979
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 the first matrix, the electronic cells being charge coupl...	07/04/1978
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 differential amplifier connected to the outputs of the pair of sa...	05/30/1978
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 of the sequence with appropriate sign in accordance with a...	04/11/1978
4084255	Positional, rotational and scale invariant optical correlation method and apparatus A method and electro-optical apparatus for correlating two functions, f1 (x,y) and f2 (x,y) which are shifted, scaled and rotated versions of each other without loss of signal-to-noise and signal-to-clutter ratios as compared to the ...	04/11/1978
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 available for determining any scale difference between th...	02/07/1978
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 corresponding to the estimated parameters of a mode of inter...	12/06/1977
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 related to the Fourier transform of the input signal in a manne...	09/20/1977
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 to achieve signal apodization and may be generated by impu...	04/05/1977
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 discrete Fourier transform (EDFT) on their input signals...	07/27/1976
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 biased by an electronic control network to accomplish a Hada...	07/13/1976
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 transformation upon that signal. Two CCD registers are arrang...	02/24/1976

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Class 708/820 - Transform