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| Number | Title | Issue Date |
| 7339170 | Optical encoding and reconstruction The invention features methods including: (i) modulating multiple components (e.g., different spatial regions, different wavelengths, or both) of electromagnetic (EM) radiation emerging from an object with different time-varying functions; (ii) measuring at least on... | 03/04/2008 |
| 7324924 | Curve fitting for signal estimation, prediction, and parametrization A method and system of automatically curve fit data series to generate data signal characterization and prediction is disclosed. The method includes receiving input data including a plurality of data series and set of input parameters. The method also includes prepr... | 01/29/2008 |
| 7212956 | Method and system of representing an acoustic field A method of representing a sound field includes the steps of acquiring measurement signals (cn) which are delivered by simple sensors (2n) that are exposed to sound field (P) determining encoding filters which are representative of at least the... | 05/01/2007 |
| 7146396 | Method and apparatus of convolving signals A method of convoluting a first signal (32) and a second signal. The method includes generating a multiplication signal responsive to the second signal, multiplying (34) the first signal by a plurality of time shifted versions of the multiplication sig... | 12/05/2006 |
| 7137062 | System and method for hierarchical segmentation with latent semantic indexing in scale space A system and method for automatically generating a hierarchical table of contents or outline for indexing a document and identifying clusters of related information in the document. The document may comprise text, audio, video, or a multimedia presentation. The inve... | 11/14/2006 |
| 7068838 | Automated color control in film-to-digital transfer A system and method for automatically adjusting color parameters during a film-to-digital transfer. An operator uses standard telecine equipment to preview scenes in order to determine a natural clustering of fields or scenes. Each cluster is processed separately. A... | 06/27/2006 |
| 7030808 | Nonlinear target recognition Nonlinear target detection for the detection of extremely weak signals when buried in very high levels of noise is performed with improvement of the quality of the signals received in the data by the amplification of the signal to noise (S/N) ratio. The S/N ratio in... | 04/18/2006 |
| 7024680 | Method and apparatus for detection and classification of impairments on a RF modulated network A method and apparatus for detecting and classifying RF impairments on the upstream path of a communication system is provided. The detection system detects frequencies with common path distortion impairments, and a system manager avoids transmission over those freq... | 04/04/2006 |
| 6947496 | Method for refining a DC-offset estimate and removing the DC-offset A method for refining a DC-Offset estimate and removing of the DC-Offset includes the step of determining if any AM is present (602). If AM is determined to be present, it is next determined if the I and Q path DC-Offset estimates are closely matched, if they... | 09/20/2005 |
| 6947495 | Method for estimating and removing a time-varying DC-offset A method for estimating and removing a time varying DC-offset includes the steps of dividing the received burst into blocks (902), then finding the maximum and minimum values in each block (904). Once the maximums and minimum values have been found, th... | 09/20/2005 |
| 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 processing circuitry. Unlike Fourier-based convolution meth... | 03/02/2004 |
| 6647406 | Sum of product circuit and inclination detecting apparatus A sum of product circuit (20) which adds up two input voltages, each of which is multiplied by the prescribed coefficients. The sum of product circuit (20) has a .nu. MOS transistor (50), a first and a second capacitance (C1, C2), and an output terminal (... | 11/11/2003 |
| 6236951 | Sensor interrogation There is disclosed a method for interrogating a sensor comprising the steps: applying a periodic electrical signal to the sensor; obtaining a signal therefrom; and performing an operation on the obtained signal to obtain the sensor response at a plurality... | 05/22/2001 |
| 6101518 | Arithmetic unit, correlation arithmetic unit and dynamic image compression apparatus In a correlation arithmetic system adapted to detect a relative difference between two functions, an operation is simplified. This makes it possible to perform the operation with a small scale of hardware and also with great accuracy. There is adopted an ... | 08/08/2000 |
| 6070183 | Arithmetic unit, correlation arithmetic unit and dynamic image compression apparatus In a correlation arithmetic system adapted to detect a relative difference between two functions, an operation is simplified. This makes it possible to perform the operation with a small scale of hardware and also with great accuracy. There is adopted an ... | 05/30/2000 |
| 6055264 | Method and apparatus for fast acquisition and multipath search in a spread spectrum system Early and on-time signals are generated from a received CDMA signal for each PN code phase being searched, and the early and on-time signals are each divided into a number of subdwells sequentially in time. A correlation is then performed for each PN code... | 04/25/2000 |
| 5982164 | Doppler triangulation transmitter location system In a system for locating the position of a transmitter, a platform containing an antenna is moved through a measurement path. The frequency received by the antenna is measured at measurement points distributed along a measurement path. The frequency is me... | 11/09/1999 |
| 5719797 | Simulator for smart munitions testing A missile or other smart munitions simulator uses an analog function simuor to simulate the detector signal of the missile's optical tracking components. The analog function simulator stores convoluted scene data for respective ranges between the missile... | 02/17/1998 |
| 5666518 | Pattern recognition by simulated neural-like networks Apparatus and method for replacing the traditional amplifications by rime delays in a neural network that can be trained to analyze temporally-related patterns. Time delays comprise the synapses between feeder and stimulus cells in the network. The result... | 09/09/1997 |
| 5521857 | Process and device for the analog convolution of images A process and device for the analog convolution of images, especially two-dimensional convolution operations of Gaussian type on a set of image pixels represented by voltages. The voltages are applied to a first set of capacitors. For each capacitor, one ... | 05/28/1996 |
| 5319268 | Circuits for wide input range analog rectification and correlation A first and a second MOS transistor of the same conductivity type are connected in series between a load and a fixed voltage source. The gates of the first and second MOS transistors are connected to sources of input voltage which are of a magnitude small... | 06/07/1994 |
| 5272923 | Inspection apparatus An inspection apparatus utilizing a pulse compression technique is described which comprises a signal generator, a transmission/reception probe; first and second correlators and an adder. The signal generator generates a composite transmission signal cons... | 12/28/1993 |
| 5220230 | Surface acoustic wave device An SAW (surface acoustic wave) device is disclosed, in which a plurality of SAW delay lines and a plurality of SAW convolver elements are combined; signals delayed by predetermined amounts by the combined SAW delay lines are used as input signals to the S... | 06/15/1993 |
| 5203823 | Detecting apparatus An ultrasonic non-destructive inspecting apparatus is constructed to comprise a transmission signal generator, an ultrasonic probe, a correlator and an adder wherein a transmission signal based on a sequence is generated and transmitted to a specimen, its... | 04/20/1993 |
| 5189712 | Correlation detector for images A correlation detector for images including: a unit for converting pixel signals of two images into digital data; a unit for deriving either an absolute value of a difference between the two pixel signals or a product of the two pixel signals from a table... | 02/23/1993 |
| 5113367 | Cross entropy deconvolver circuit adaptable to changing convolution functions A neural net, and method of using the net, to solve ill-posed problems, such as deconvolution in the presence of noise. The net is of the Tank-Hopfield kind, in which input to the signal net is a cross entropy regularizer.... | 05/12/1992 |
| 5099156 | Subthreshold MOS circuits for correlating analog input voltages A first and a second MOS transistor of the same conductivity type are connected in series between a load and a fixed voltage source. The gates of the first and second MOS transistors are connected to sources of input voltage which are of a magnitude small... | 03/24/1992 |
| 5080464 | Optical neural network apparatus using primary processing For inputting a two-dimensional image into an optical neural network apparatus, a primary processing device is used to extract the characteristic feature of an object pattern. Thereafter, compressed information as a result of the above processing is input... | 01/14/1992 |
| 5020113 | Maskable bilevel correlators A method and apparatus for correlating two signals representing a live image and a reference image are disclosed. The reference signal is processed to provide a polarity bit and mask bit for each pixel position in the reference image. The processed video ... | 05/28/1991 |
| 5001723 | Sinusoidal M-ary orthogonal keyed decoding A spread spectrum communications system is described for recovering data from a signal having a first carrier frequency modulated by one of at least four phase modulations, each phase modulation orthogonal to one another and the signal further modulated b... | 03/19/1991 |
| 4930099 | Wavefront vector correlation processor and method A wavefront vector correlation processor provides rapid, weighted correlation of a given vector with other vectors in a given vector space. In one embodiment the processor includes an interconnected two-dimensional array of simple processing elements that... | 05/29/1990 |
| 4905296 | System for shape recognition A system for shape recognition includes a spatial convolution filter which has an approximately band pass response. The filter is applied to a camera image and the sign of the filter's output is used to produce a second binary image. At sufficiently coars... | 02/27/1990 |
| 4866660 | Optoelectraulic devices based on interference induced carrier modulation A subpicosecond solid state optical correlator based on interference induced carrier modulation includes a photosensor circuit having a photoconductive element and a pair of opposed electrodes. A voltage difference is created across the electrodes to defi... | 09/12/1989 |
| 4853903 | Method and apparatus for removing sinusoidal noise from seismic data Method and apparatus for removing sinusoidal noise from seismic traces comprised of a seismic data component and a sinusoidal noise component. Seismic traces acquired by conventional seismic exploration of a subsurface formation are utilized to produce a ... | 08/01/1989 |
| 4849925 | Maximum entropy deconvolver circuit based on neural net principles Disclosed are two modifications of the Tank-Hopfield circuit, each of which enables the deconvolution of a signal in the presence of noise. In each embodiment, the Tank-Hopfield circuit is modified so that the equation for total circuit energy reduces to ... | 07/18/1989 |
| 4843309 | Waveform timing alignment system for digital oscilloscopes A method and an apparatus detect the presence of and correct for timing misalignment between waveforms acquired by digital oscilloscopes. In a preferred embodiment, a digital oscilloscope (50) includes a waveform alignment system (60) that receives a firs... | 06/27/1989 |
| 4833636 | Analog, two signal correlator A correlator, such as may be used in a phase detecting device of an automatic focusing circuit for a camera , has a simple arrangement that attains improved accuracy and high speed. A pair of charge storing elements is provided to which input signals are ... | 05/23/1989 |
| 4833637 | Acousto-optic multi-channel space integrating correlator Acousto-optic multi-channel space integrating correlators and methods of using the same are disclosed. The correlators consist of a single channel acousto-optic cell illuminated by a light source, with the light from the cell imaged onto a second acousto-... | 05/23/1989 |
| 4809213 | Two-track convolver operating with acoustic waves and with suppression of self-convolution signals A two-track convolver has input transducer assemblies at each end of integrated electrodes. Each of the input transducer assemblies is formed of two individual transducers which are connected in series. One of the transducer input assemblies connects to a... | 02/28/1989 |
| 4803644 | Alignment mark detector for electron beam lithography A hardware system is disclosed for detecting alignment marks on a substrate in connection with electron beam lithography. The system is considerably faster than prior software approaches. A scanning signal derived from backscattered electrons as the beam ... | 02/07/1989 |
