Match

Document 
Document Title 

5028102 
Parallel optical information processing system
A parallel optical information processing system includes an information inputting part which produces a coherent optical beam spatially modulated by input image information. A rewritable hologram... 

5024508 
Amplitude encoded phaseonly filters for optical correlators
Method allows a first phaseonly optical correlator filter function to be written on an amplitude modulating device such as a spatial light modulator (SLM) by applying a bias term to the phase... 

5020018 
Outer product optical interferometer with hologram
An outer product shearing interferometer for an optical source of onedimensional extent which provides interference between every two points on the source. The interferometer comprises an input... 

5020111 
Spatial symmetry cueing image processing method and apparatus
An optical correlation method and apparatus recognizes and locates specific patterns in a scene based on the spatial symmetries associated with that pattern. An input scene is divided into two... 

5016976 
Modified compact 2f optical correlator
A modified 2f Fourier transform optical correlator combines a collimation and first Fourier Transform lens into one thin lens. The resulting correlator thus utilizes one less lens relative to the... 

5005946 
Multichannel filter system
A multichannel filter which exploits the parallel processing advantages of an optical signal processor is used to sort, classify and remove noise or unwanted signals from signals of interest.... 

5005954 
Method and apparatus for secondrank tensor generation
A method and apparatus for generation of secondrank tensors using a photorefractive crystal to perform the outerproduct between two vectors via fourwave mixing, thereby taking 2n input data to... 

4992711 
Positioning controlling device
A positioning controlling device for improving the machining accuracy of a work of a noncircular shape. A control axis is driven in accordance with an input function consisting of position... 

4989259 
Optical correlator for incoherent light images
The optical correlator for incoherent light images herein described can be used in real time image processing systems to recognize objects having selected shapes and sizes and to determine their... 

4986640 
High accuracy digital acoustooptic matrix computer
A digital acoustooptic device for performing vectormatrix multiplication. The device comprises two multitransducer acoustooptic cells imaged onto each other. The first cell receives the... 

4976520 
Common path multichannel optical processor
Adverse environmental effects may be canceled from an optical processor which adjusts the phase of spatially distributed frequency components. This is achieved by projecting the optical modulated... 

4971409 
Realtime optical image subtraction
An apparatus for subtracting the amplitude of a first optical image on a first beam from the amplitude of a second optical image on a second beam includes a first beam splitter to divide the first... 

4972498 
Alignment system for an optical matched filter correlator
As multiple matched filter memories for optical correlators increase in size, their design, fabrication and alignment becomes increasingly complex and critical for proper operation of the optical... 

4959559 
Electromagnetic or other directed energy pulse launcher
The physical realization of new solutions of wave propagation equations, such as Maxwell's equations and the scaler wave equation, produces localized pulses of wave energy such as electromagnetic... 

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... 

4941733 
Optical correlator system
A polychromatic optical correlator system, comprising one or more devices to generate simultaneously a plurality of signal beams at a plurality of wavelengths, a beam recombiner to direct the... 

4931959 
Optical shuffle arrangement
An optical arrangement permutes elements of a multidimensional array by projecting an input element array onto an output via a plurality of optical paths. Each optical path provides a relative... 

4925296 
Method of, and apparatus for measuring the flow velocity in wind tunnels
A method of measuring the flow velocity in wind tunnels is indicated, in which a path covered by particles located in a flow is employed as a measure of the flow velocity. In a predetermined time... 

4908751 
Parallel data processor
A data processing system for simultaneously processing a plurality of data words, comprising one or more data processing planes each of which comprises a plurality of processing entities logically... 

4895431 
Method of processing endoscopic images
A method of processing images taken by an endoscope having insertion section, bending section and operation section including a step of entering a first image of an object taken by the endoscope... 

4878736 
Control means and method for optical inspection system
Operation of system components is automatically monitored, controlled and coordinated. The presence at an inspection station of each successive one of the objects to be inspected is automatically... 

4872135 
Double pinhole spatial phase correlator apparatus
A random wavefront is incident on an aperture plate with a double pinhole of variable separation that is followed by Fourier transforming optics which focuses an intensity profile on a detector... 

4869574 
Hybrid optical correlator
A hybrid optical correlator which uses a Fourier plane detector to cause adjustment of an image of an object in scale and orientation so that a matched filter can provide a correlation of the... 

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... 

4862115 
Optical beamformers
Disclosed as a beamforming system, particularly useful for seismic exploration or undersea surveillance, in which data processing of the system is done optically. Sensor outputs are subjected to... 

4862406 
Adaptive associativeprocessing optical computing architectures
An associative processing module adapts in real time as it is exposed to associated information patterns, (u,v), so, at a later time presentation of one pattern, u, results in recall of the other, v. 

4843586 
Distributed sampling of electrical and optical signals using coded switched electrode travelling wave modulators
A sampler that can be used to sample optical or electrical signals, having an improved sensitivityresolution product compared to conventional samplers. A coded switched electrode modulator has... 

4843587 
Processing system for performing matrix multiplication
An optical processing system for performing a matrix multiplication Mx where M is a matrix and x is a vector involves two twodimensional arrays of optically transmissive elements with each... 

4842370 
Optical spatial logic arrangement
An arrangement for modifying an information carrying radiant energy beam array in which occurrences of a first prescribed pattern of radiant energy beams in the array are detected by producing... 

4838644 
Position, rotation, and intensity invariant recognizing method
A method for recognizing the presence of a particular target in a field of view which is target position, rotation, and intensity invariant includes the preparing of a targetspecific invariant... 

4833637 
Acoustooptic multichannel space integrating correlator
Acoustooptic multichannel space integrating correlators and methods of using the same are disclosed. The correlators consist of a single channel acoustooptic cell illuminated by a light source,... 

4832447 
Joint transform image correlation using a nonlinear spatial light modulator at the fourier plane
The present invention is a nonlinear joint transform image correlator which employs a spatial modulator operating in a binary mode at the Fourier plane. The reference and input images are... 

4826285 
Method of enhancing the signal to noise ratio of an image recognition correlator
Method of producing an enhanced output correlation signal from an image matching correlator includes the steps of further transforming data representing an input image to produce a transformed... 

4811210 
A plurality of optical crossbar switches and exchange switches for parallel processor computer
A computer (30) has parallel elementary processors (P1, . . . , PK) interconnected by an optical crossbar switch (32). Multiple groups of processors, each having a separate crossbar switch, are... 

4805158 
Acoustic signal optical correlator using a light emitting diode array
An optical correlator using a light emitting diode array, in which analog gnals from two spaced sensors are correlated in order to locate and track a target. One signal is clipped and digitized... 

4804250 
Optical processor for an adaptive pattern classifier
A multipurpose optical processor is described which functions as a multis dual scale adaptive pattern classifier. Normalization, enhancement, inhibitory convolutions, recurrent feedback, code... 

4802149 
Acoustooptic twodimensional coherent optical modulator
Outputs of a linear phased array antenna can be employed for emitter field sorting, i.e., providing an indication of the frequency and angle of arrival of signals from a plurality of radiation... 

4800519 
Optical data processing systems and methods for matrix inversion, multiplication, and addition
Optical data processing systems are described for processing four NxN matrices A, B, C, D to calculate the expression CA1 B+D. Multicell spatial light modulators are employed in conjunction with... 

4770483 
Electrooptic sampling apparatus for sampling electrical and optical signals
High speed integrated optic devices for sampling transient RF and microwave signals. A series of electrooptic couplers are spaced apart along an integratedoptic waveguide beneath a coplanar RF... 

4771398 
Method and apparatus for optical RF phase equalization
Phase equalization of a phasedistorted multifrequency signal is accomplished by acoustooptic modulating a coherent light beam with the signal taking the optical Fourier transform with the... 

4765714 
Binary phaseonly optical correlation system
A binary phaseonly optical correlation system incorporating therein a binary phaseonly filter. The binary phaseonly optical filter is made by mathematically generating preselected phaseonly... 

4758976 
High bandwidth triple product processor using a shearing interferometer
An apparatus is described which performs optical processing on electrical signals to calculate the triple product integral in a manner which accommodates high bandwidth signals, which processes... 

4755745 
Incoherent light optical processor
An apparatus is described which performs acoustooptical signal processing functions with incoherent light, which procedures were formerly possible only with coherent light devices. Specific... 

4750148 
Optical Gaussian convolvers
The variable Gaussian convolution of an optical image is performed using a transparency, a focusing lens, a TV camera and a mechanism which moves the camera. The transparency has pattern inscribed... 

4729632 
Common path acoustoptic adaptive linear predictors
Common path time and frequency domain optical adaptive linear predictors are disclosed, characterized by wide bandwidth operation for use in channel equalization, source redundancy removal, speech... 

4729114 
Signal processing circuit for instantaneous fourier transformation
A feedback loop circuit that may be used for Fourier Transform analysis, for carrier acquisition, or for other related purposes, sums the inputs signal, passes it through a delay line to provide... 

4726639 
Optically implemented memory correlator using a photorefractive crystal
An optically implemented technique which generates the correlation function f two electrical signals. A reference signal is used in conjugation with an acoustooptic device to generate an optical... 

4723222 
Optical correlator for analysis of random fields
An optical data correlator for the analysis of images of random fields is provided which comprises a light source for projecting a beam of light along a preselected optical axis, a first lens... 

4705344 
Optical interconnection arrangement
An interconnection device is disclosed for optically interconnecting a plurality of optical devices. The interconnection device comprises an optically transparent spacer material having opposite... 

4704702 
Systolic timeintegrating acoustooptic binary processor
An optical processing system performs matrixmatrix, matrixvector, and vectorvector multiplication. Element product formation is accomplished by the time integration of a detector array which... 