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8054669 |
Non-volatile programmable optical element employing F-centers
A non-volatile programmable electro-optical element alters absorption characteristics of an optical medium that comprises a doped transition metal oxide material including F-centers. The F-centers...
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7606106 |
Semiconductor memory device
A semiconductor memory device operates by using a fixed power and a variable power. The device includes a plurality of word lines which select rows of a memory cell array, a plurality of word line...
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7556750 |
Photochromic materials with reactive substituents
Various non-limiting embodiments of the present disclosure relate to photochromic materials comprising a reactive substituent. For example, the present disclosure contemplates photochromic...
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6850092 |
Low latency FIFO circuits for mixed asynchronous and synchronous systems
A FIFO design interfaces a sender subsystem and a receiver subsystem operating on different time domains. The sender subsystem and the receiver subsystem may be synchronous or asynchronous. The...
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6770524 |
Method to enhance performance of thermal resistor device
An apparatus including a contact on a substrate, a dielectric material overlying the contact, a phase change element overlying the dielectric material on a substrate, and a heater element disposed...
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6680860 |
Optical coherent transient continuously programmed continuous processor
Techniques for continuously programming a coherent transient spatial-spectral optical signal processor involve the repeated application of two or more spatially distinct optical programming pulses...
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6608774 |
Two-photon four-dimensional optical memory
Selected domains, normally 2×103×2×103 such domains arrayed in a plane, within a three-dimensional (3-D) volume of radiation-sensitive medium, typically 1 cm3 of spirobenzopyran containing 2×...
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6528234 |
II-VI compounds as a medium for optical data storage through fast persistent high density spectral holeburning
High density, photon-gated persistent spectral holeburning is effectuated in rare earth doped II-VI compounds such as MgS, CaS, BaS and SrS. Two-photon ionization of rare earth ions is performed,...
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6514435 |
High density and fast persistent spectral holeburning in II-VI compounds for optical data storage
High density, photon-gated persistent spectral holeburning is effectuated in rare earth doped II-VI compounds such as MgS, CaS, BaS and SrS. Two-photon ionization of rare earth ions is performed,...
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6483735 |
Two-photon, three-or four-dimensional, color radiation memory
Three-, and four-dimensional (“3-D” and “4-D”) volume radiation memories store multiple binary bits of information—typically about five to ten and more typically eight such bits—in the same physic...
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6407831 |
Coherent interaction of optical radiation beams with optical-electronic materials of generalized crystal symmetry
A method for optimizing the interaction of a resonant material having generalized crystal symmetry with a beam or beams of radiation. The invention includes determining a special direction relative...
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6280904 |
Photo-chemical generation of stable fluorescent derivatives of rhodamine B
The present invention relates to the field of optical recording materials, in particular, fluorescent compounds and matrices suitable for use in optical memory systems, including three dimensional...
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6067246 |
Method for writing data to and reading multiple bit data words from a DNA optical storage device
An optical memory system includes memory cells which utilize synthetic DNA as a component of the information storage mechanism. In the preferred embodiment, memory cells contain one or more...
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5849403 |
Organic thin film device
Disclosed is an organic thin film device having an organic thin film consisting of a mixed-stacked charge-transfer complex, wherein the organic thin film contains n species of donor molecule D1 . ....
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5835404 |
DNA optical storage device utilizing non-radiative energy transfer
An optical memory system includes memory cells which utilize synthetic DNA as a component of the information storage mechanism. In the preferred embodiment, memory cells contain one or more...
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5636195 |
Optical recording method and reproducing method and recording apparatus and reproducing apparatus utilizing stimulated photon echo
The recording method and apparatus according to this invention is an "optical recording method utilizing a simulated photon echo" in which information is recorded by irradiating data a.d record...
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5581499 |
Micro information storage system
A device for optically storing and retrieving information incorporating a cadmium fluoride crystal. Using focused ionizing radiation, patterns can be formed in the crystal by the creation of color...
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5568460 |
Optical recording and/or reproducing apparatus and method utilizing stimulated photon echo
The recording method and apparatus according to this invention is an "optical recording method utilizing a simulated photon echo" in which information is recorded by irradiating data and record...
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5438561 |
Method for recording and reproducing information using an optical memory
A method for recording and reproducing information using an optical memory device being constituted by a transparent substrate, a recording film formed on the substrate and made of a resin...
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5424974 |
Optoelectric memories with photoconductive thin films
Methods and apparatii are described for information storage in photoconductive film of single layer composition by irradiation of memory elements simultaneously with application of an electric...
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5371698 |
Random access optical memory
The multi-dimensional optical memory utilizes the wavelength and intensity dimensions to effect a high density record. With incorporation of a broadband light source, scanning monochromator and...
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5369665 |
Coherent time-domain data storage with spread-spectrum data pulse
A method and apparatus for coherent time-domain optical data storage utilizing a randomizing phase modulation to increase storage capacity. A laser (10) generates write. read, and data pulses which...
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5339201 |
Optical computing element
The invention relates to an optical computing element for use in an optical computer utilizing computing light rays having a plurality of wavelength components. The optical computing element...
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5327373 |
Optoelectronic memories with photoconductive thin films
Methods and apparatii are described for information storage in photoconductive film of single layer composition by irradiation of memory elements simultaneously with application of an electric...
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5325324 |
Three-dimensional optical memory
Selected domains, normally 103 ×103 such domains arrayed in a plane, within a three-dimensional (3-D) volume of active medium, typically 1 cm3 of spirobenzopyran containing 102 such planes, are ...
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5317453 |
Optical computer element
The invention relates to an optical computing element for use in an optical computer utilizing computing light rays having a plurality of wavelength components. The optical computing element...
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5306599 |
Optical recording material
A material for optical recording by utilizing the photochemical hole burning is disclosed. The optical recording material is a composition comprising a watersoluble deuterated polymer as a host...
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5305254 |
Magneto-optic memory device
A magneto-optic memory device, such as a magneto-optic disk or magneto-optic card having a pair of opposed substrates at least one of which is transparent. Between the substrates is a magneto-optic...
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5297076 |
Spectral hole burning data storage system and method
Phase modulation is used to record data in a spectral hole burning material. A laser and a phase modulator are used to generate both a reference pulse and a phase modulated data pulse to the...
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5276637 |
Swept-carrier frequency selective optical memory and method
Data storage methods and apparatus are disclosed that utilize a swept-carrier optical approach with an inhomogeneously broadened absorber material having multiple special storage cells. Data are...
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5255218 |
Optical frequency multiple signal processing method
A frequency multiple outgoing light is obtained by intensity-modulating a frequency multiple incident light in frequency domain, after irradiating a pump beam to an optical recording medium...
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5240762 |
Organic thin film element
An organic thin film element is disclosed which has an organic thin film consisting of a mixed stacked charge-transfer complex of donor and acceptor molecules, wherein the organic thin film is made...
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5231626 |
Wavelength selective optical recording and reproducing method
A wavelength selective optical recording and reproducing method includes an optical recording and reproducing step of information composed of time series signals on a recording medium having...
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5204215 |
Wavelength multiplexed optical recording material
A wavelength multiplexed optical recording material is disclosed wherein a photosensitive material including substituted porphine, such as tetra(pentafluorophenyl) porphine or...
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5204770 |
All optical image processing and pattern recognition apparatus using stimulated photon echoes
An image processing apparatus having a third-order nonlinear stimulated photon echo medium (1). The photon echo medium (1) can store large numbers of images in the form of a Fourier transformed...
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5191574 |
Optical memory method and apparatus utilizing frequency channeling and Stark effect
Apparatus for storage and retrieval of digital data includes a multidimensional holographic storage medium for storing phase holographic images representative of the digital data. Selected regions...
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5151813 |
Method and apparatus for producing three-dimensional objects
A three-dimensional object producing method, and the apparatus for carrying it out, of the type in which a beam is irradiated on a liquid surface of a liquid photo-curable resin to form a...
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5142493 |
Optical disk employing electron trapping material as a storage medium
An erasable optical disk drive system is disclosed which utilizes an electron trapping media coated on the disk surface to store data in the form of light energy. Data is written onto the disk,...
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5124944 |
Optical storage medium and storage process
An optical data storage medium, comprising; (a) an amorphous matrix; and (b) guest molecules dispersed in the amorphous matrix, the guest molecules consisting essentially of electron donors and...
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5107483 |
Frequency selective optical data record/regenerate apparatus
An apparatus in accordance with the present invention sequentially fixes the wavelength of a light beam irradiated from a light source whose oscillation wavelength sequentially varies to a...
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5032973 |
Optical recording material containing photochromic compounds
An optical recording material (21a) or a photochemical hole burning reaction. That is to say, informations are recorded in the recording material formed of a recording member in which molecules...
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5023859 |
Optical data storage apparatus and method utilizing an amorphous polymer which exhibits photochromic properties
A device for reversible optical data storage, comprising polymer film, the film comprising an amorphous polymer capable of photochromic isomerization, whereby data is reversibly stored in said...
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4985226 |
Hole-burning material and production thereof
A hole-burning material which comprises at least one hole which is formed on a zero-phonone line and semi-permanently lasts without suffering from any change in the temperature range from 2 to 120...
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4962479 |
Optical data storage system with wavelength selective laminate
The storage medium for an optical data storage system is a contiguous laminate formed by a plurality of layers of photochemical hole burning material, such layers individually exhibiting...
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4956812 |
Wavelength selective optical recording and reproducing device
A wavelength selective optical recording and reproducing device has a reference wavelength in a marker hole of a medium. The optical detector is adapted to detect light which is reflected from or...
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4868807 |
Wavelength selective optical data storage system
A recording medium for wavelength selective optical data storage has at least one memory element on which information is recorded by creating recording holes on the absorption spectrum thereof. The...
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4864536 |
Optical memory system and method of using the same
An optical memory system and associated method uses electron trapping materials. Data may be written into an optical memory made of the electron trapping material by application of a visible light...
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4855951 |
Method for erasing recording in a PHB memory
A desired portion of information stored in the form of holes using hole burning phenomena is erased by irradiating a desired portion of a recording medium with light so as to erase desired holes....
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4841293 |
Process for displaying information
A display panel comprising of a semiconducting oxide between layers of a hole injector and an electron injector. The electron injector contains a metal oxide in a fine particulate form. When the...
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4819210 |
Optical information writing method
An information writing method of an optical recording device selectively irradiates light on an optical recording medium, having a thin organic film containing donor and acceptor molecules, and a...
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