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7437392 Transitioning a filter function of a two-port lattice-form planar waveguide optical delay line circuit filter from a start filter function to a target filter function  
Optically coherent, two-port, serially cascaded-form optical delay line circuits can realize arbitrary signal processing functions identical to those of FIR digital filters with complex filter...
7355769 Method and apparatus for single-photon source and quantum memory  
An optical switch and optical storage loop are used as the basis of a single-photon source and a quantum memory for photonic qubits. To operate as a single-photon source, the techniques include a...
7236667 Techniques for use of nanocavities to enhance quantum processing with photons and the Zeno effect  
Techniques are provided for placing atoms inside an appropriate nanocavity for enhancing two-photon absorption and quantum information processing based on the Zeno effect. Techniques for...
6995404 Techniques for quantum processing with photons and the zeno effect  
Techniques are provided that use the quantum Zeno effect to implement practical devices that use single photons as the qubits for quantum information processing. In the quantum Zeno effect, a...
6970900 Optical system for certain mathematical operations  
An optical system utilizing phosphors to perform mathematical operations without the direct or necessary use of an electronic component or electrical power source is disclosed. The luminenscent and...
6870554 Maskless lithography with multiplexed spatial light modulators  
Imaging systems that use a spatial light modulator (SLM), such as maskless lithography systems using a digital micromirror device (DMD), suffer from low throughput at high resolution because of the...
6854004 Irregular optical interconnections to compensate for non-uniformities in analog optical processors  
Using irregular optical interconnections to compensate for non-uniformities in analog optical processors, such as matrix-vector (M-V) optical processors, is disclosed. An M-V processor of one...
6466961 Methods for adapative spectral, spatial and temporal sensing for imaging applications  
A method for adaptive spectral sensing developed for a two-dimensional image made up of picture elements. The method calls for illuminating at least one of the picture elements with an input light...
6404535 Optically implemented wideband complex correlator using a multi-mode imaging device  
An optically implemented wide bandwidth correlation system ( 10 ) that employs a multi-mode imaging device ( 42 ) and a particular modulation format to provide both in-phase and quadrature phase...
6343307 Synthesis of light beams  
A method and system for synthesizing a desired light beam including calculating a two-dimensional light filter for an optical element, the two-dimensional light filter being such that the optical...
6163403 High output reflective optical correlator having a folded optical axis using grayscale spatial light modulators  
An optical correlator system having a plurality of both active and passive reflective optical components between a source of electromagnetic radiation, such a visible coherent light, and an output...
5987188 Space integrating sliding image optical correlator  
An optical correlator includes at least one electrically addressable liquid crystal array, at least one LED array for generating a reference image which is modulated by changing the transmissivity...
5955993 Detection of spread spectrum signals  
A spread spectrum signal detection system comprising two spatially separated receivers, a correlator, such as a time integrating correlator employing acousto-optic cells, which is connected to the...
5943170 Adaptive or a priori filtering for detection of signals corrupted by noise  
A method for pattern recognition and localization using a joint transform correlator and joint transform correlator. The method includes providing a joint image of a reference image and an input...
5903390 Two port nonlinear joint transform correlator  
An all optical photorefractive holographic joint transform correlator provides a first correlation plane output port using two-beam coupling, and a second correlation plane output port employing...
5815597 Binary encoding of gray scale nonlinear joint transform correlators  
A joint Fourier transform optical correlator is disclosed which can have varying degrees of nonlinearity and yet employ a readily available binary spatial light modulator for producing the...
5812292 Optical correlator using optical delay loops  
An optical correlator is disclosed that compares signals of interest with lected reference signals stored in holograms. The holograms are arranged so that the selected reference signals impinge...
5701396 Multimode-laser for an optical information processing system such as a neural net  
An optical information processing system comprises a coding unit for individually coding a plurality of optical information carrier waves, and a processing unit for processing the plurality of...
5699449 Method and apparatus for implementation of neural networks for face recognition  
A method and apparatus for implementation of neural networks for face recognition is presented. A nonlinear filter or a nonlinear joint transform correlator (JTC) employs a supervised perceptron...
5614834 Sampling receivers  
A Golay sampling receiver is used for optical sampling of voltage and charge at the internal nodes of analog and digital integrated circuits. The sampling receiver uses very high sampling rates...
5608664 Method for correlating image data of a range-finder  
Corrective data for left and right sensor arrays of a range-finding optical system is stored as a difference between a maximum sensor output and a correction function. The stored data is taken...
5587829 Method and apparatus for signal filtering  
A signal filter, and method of signal filtering, in which an optical signal s spatially dispersed according to frequency, and undesired frequencies blocked out. In an embodiment, a Bragg cell...
5585714 Wide bandwidth RF spectrum analyser  
A broadband electrical signal spectrum analyser comprises a spatial light modulator such as a Bragg cell located within at least one resonant cavity and illuminated by a polychromatic source of...
5581383 Arrangement for optical autocorrelation  
An arrangement for optical autocorrelation of laser speckle photography (LSP) photographs or particle image velocimetry (PIV) photographs using optical Fourier transforms is disclosed. The object...
5570457 Visual information processing device  
A visual information processing device having a neural network function and capable of visual information processing comprises a semiconductor integrated circuit section equipped with a plurality...
5546504 Information processing device capable optically writing synapse strength matrix  
An information processing device having neural network functions for performing information processing includes a semiconductor integrated circuit section including a plurality of neuronic circuit...
5530666 Optical memory  
The present invention is based on the use of a plurality of gratings recorded in an optical waveguide, the gratings having different Bragg wavelengths selected to store individual bits of data. The...
5523881 Optical correlator using light phase modulation and two reflective spatial light modulators  
An optical signal processor which employs a coherent light source, two spatial light modulators and a beam splitter. Light is from the source is reflected from the beam splitter and sent to a first...
5515189 Neural network device and image recognition method employing photoconductive liquid crystal device with patterned electrode  
A light modulation device comprising a first transparent electrode layer, a photoconductive layer, a conductive electrode, a light modulation layer, and a second transparent electrode layer formed...
5511019 Joint transform correlator using temporal discrimination  
A joint transform correlator has modulators for temporally modulating a first optical input signal at a first frequency and a second optical input signal at a second frequency. An image sensor in...
5497433 Optical information processing apparatus and method for using computer generated hologram  
An input image of an object is optically Fourier-transformed and after coordinate-transforming the Fourier-transformed input image optically to obtain a rotation-invariant and scale-invariant...
5493444 Photorefractive two-beam coupling nonlinear joint transform correlator  
An all-optical nonlinear joint transform correlator has been implemented for the first time without using a spatial light modulator and digital processing in the Fourier plane. The correlator...
5477382 Optical correlator system  
A system and method of optical correlation that avoids bias level terms in the optical correlation output. In the system and method, two coherent polarized component beams having frequencies f 1 ...
5440671 Neural net model and neural net optimizing method and system for realizing the same  
A recursive neural net including processing elements (1) each having a linear saturated function as an input/output function. The elements (1) are divided into a plurality of blocks (2), and the...
5410427 Method for the detection, recognition and use of signals mixed with other encoding or parasitic signals, and apparatus for performing the method  
The invention is a method that considerably improves the rapidity of collection and recognition of electrical signals that are mixed with other signals that impede direct access. The subject of the...
5394257 Optical neural network system  
An optical system of an optical neural network model for parallel data processing is disclosed. Taking advantage of the fact that an auto-correlation matrix is symmetric with respect to a main...
5383042 3 layer liquid crystal neural network with output layer displaying error value for optical weight updating  
An optical information processor for use as a matrix vector multiplier comprises a vector input spatial light modulator (1) and an optically addressed weight matrix spatial light modulator (3). A...
5381362 Reprogrammable matched optical filter and method of using same  
A high-speed, high-throughput matched optical filter for processing data that allows for rapid reprogramming to change the reference signal or signals. A coherent time-domain optical memory system...
5327370 Circularly scanned electronically addressed optical correlator  
A system for identifying and determining the orientation and location of multiple objects includes a camera and a mechanism for permitting the camera to scan a scene containing the objects. Objects...
5321639 Dual-scale topology optoelectronic matrix algebraic processing system  
A parallel architecture matrix algebraic processing system exhibits patterns of arrayed (i) light transmitters and (ii) light receivers that are identical, but at differing scales. Planar arrays of...
5309523 Optical pattern recognition apparatus  
In a joint transform correlator utilizing a spatial optic modulator, depending on the light intensity of each correlation peak obtained from optical correlation processing between at least one...
5307306 Wideband intercorrelation method and device implementing this method  
An optical architecture enabling the intercorrelation of two instantaneous wideband temporal signals. The beam coming from a monomode laser is used to obtain two carriers (W1, W2) for signals R(t)...
5287431 Neural network using liquid crystal for threshold and amplifiers for weights  
A neural network type data processing system in which an optical input is received and a normalized optical output is generated. A plurality of light receiving regions of a photovoltaic material...
5281907 Channelized time-and space-integrating acousto-optical processor  
A novel channelized, hybrid time- and space-integrating acousto-optic (AO) spectrum analyzer is described. The architecture consists of two acousto-optic cells in a crossed cell configuration. The...
5276636 Method and apparatus for adaptive real-time optical correlation using phase-only spatial light modulators and interferometric detection  
A video-rate correlator constructed with a phase-only spatial light modulator and video camera. The phases of the Fourier spectra of a test and reference image are measured by real-time fringe...
5268679 Optical data processing device  
An optical data processing device has successive light intensity modulating levels, each level including a matrix of cells (35), each cell having therein an element (31) of electrically...
5264930 Fast light interconnected processor  
A fast light interconnected processor device for image processing includes an image sensor for producing a line scan signal, a one-dimensional line display for producing a light having an intensity...
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:...
5251052 System for solving boolean equations using optical lookup tables  
A reconfigurable digital optical lookup table for solving Boolean equations sing an array of bistable optical devices is provided. A single light source is divided into a matrix of light beams...
5247473 Method and apparatus for performing a multiple-input optical arithmetic comparison  
An optical arithmetic comparator (OAC) is disclosed which is capable of comparing multiple numbers simultaneously, and indicating the common value of the multiple numbers being compared if the...
Matches 1 - 50 out of 324 1 2 3 4 5 6 7 >