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7471581 |
Wide dynamic range and high speed voltage mode sensing for a multilevel digital non-volatile memory
A high speed voltage mode sensing is provided for a digital multibit non-volatile memory integrated system. An embodiment has a local source follower stage followed by a high speed common source...
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7317628 |
Memory device and sense amplifier circuit with faster sensing speed and improved insensitivities to fabrication process variations
A sense amplifier circuit with faster sensing speed and improved insensitivities to fabrication process variations (i.e., eliminated functional failures) is provided herein. According to one...
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7236388 |
Driving method of variable resistance element and memory device
A variable resistance element is configured to be provided with a perovskite-type oxide between a first electrode and a second electrode, of which electric resistance between the first electrode...
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7227169 |
Programmable surface control devices and method of making same
Programmable surface control devices whose physical features, such as surface characteristics and mass distribution, are controlled by the presence or absence of an electrodeposition of metal...
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6994947 |
Photochemical hole burning media
A photochemical hole burning medium is composed of a material in which a rare earth complex and a reducing agent is dispersed in a solid matrix. The rare earth complex may be at least one complex...
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6867408 |
Erasable/rewritable optical data storage with photorefractive polymers
A method of erasable/rewritable optical data storage is provided in which a laser beam from a laser ( 10 ) operated in either a pulsed or continuous wave mode is focussed by an optical system (...
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6865117 |
Programming circuit for a programmable microelectronic device, system including the circuit, and method of forming the same
A circuit for programming a microelectronic device is disclosed. The circuit is configured to provide a reversible bias across the microelectronic device to perform erase and write functions. One...
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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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5814265 |
Method and apparatus for production of three-dimensional objects by stereolithography
A system for generating three-dimensional objects by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of altering its physical state in...
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5609812 |
Method of making a three-dimensional object by stereolithography
An improved method for stereolithographically making an object by alternating the order in which similar sets of vectors are exposed over two or more layers. In another method, a pattern of tightly...
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5573721 |
Use of a support liquid to manufacture three-dimensional objects
A system is provided for producing a three dimensional object from a reactive liquid medium capable of being solidified. The object is constructed from many successive layers of the solidified...
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5386310 |
Parallel optical switching apparatus
A parallel optical switching apparatus wherein at least one m-channel light emission element array and one n-channel light receiving element array are optically connected via an m×n optical...
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5270965 |
Method of driving device having metal-insulator-metal(mim)structure
A method of driving a device having a pair of electrodes and organic insulating layer sandwiched therebetween. The device exhibits at least three states of different electroconductivities in...
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5258146 |
Method of and apparatus for measuring and controlling fluid level in stereolithography
Improved apparatus and methods for forming a layer of material over a surface of a previously-formed cross-section of a three-dimensional object in anticipation of forming a next cross-section of...
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5238639 |
Method and apparatus for stereolithographic curl balancing
A method and apparatus for eliminating or substantially reducing curling effects in stereolithographically formed objects. Synergistic stimulation is applied to a curable material to form a three...
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5209878 |
Surface resolution in three-dimensional objects by inclusion of thin fill layers
Methods and apparatus for reducing surface discontinuities, resulting from the formation of a three-dimensional object out of a plurality of stacked layers, during layer by layer stereolithographic...
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5198159 |
Process of fabricating three-dimensional objects from a light curable resin liquid
A process of fabricating a three-dimensional object from a light curable liquid resin includes irradiating a light to a surface of the light curable liquid resin so as to form successive...
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5182056 |
Stereolithography method and apparatus employing various penetration depths
An improved stereolithographic apparatus (SLA) and an improved method for generating a part from curable material. The invention utilizes control and/or knowledge of depths of penetration of...
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5174931 |
Method of and apparatus for making a three-dimensional product by stereolithography
Apparatus and methods for stereolithographically forming a three-dimensional object includes a vessel for holding a building material and a smoothing member for forming a uniform coating over a...
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5130064 |
Method of making a three dimensional object by stereolithography
A stereolithographic method for constructing an object from a medium capable of solidification upon exposure to synergistic stimulation (e.g. a laser beam). Stacked layers of solidified medium are...
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5059359 |
Methods and apparatus for production of three-dimensional objects by stereolithography
An improved sterolithography system for generating a three-dimensional object by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of...
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4972370 |
Three-dimensional memory element and memory device
A three-dimensional memory element comprises a multilayer tunnel switch portion formed by alternately stacking conductive films and insulating films, both the ends of the switch portion consisting...
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4896292 |
Apparatus for the reversible, optical storage of data
The invention relates to an apparatus for reversible optical data storage using polymeric liquid crystals with mesogenic side groups as a storage medium, arranged to store information by means of...
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4813016 |
Tunnel memory device having a multi-layered Langmuir-Blodgett film
A three-dimensional tunnel memory device includes a multilayer Langmuir-Blodgett film wherein each layer can store or carry an electric charge. Charges are introduced into one side of the film in a...
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4789965 |
Methods and compositions for recording optical information employing molecular pseudorotation
Methods and compositions for use in optically recording information. The present invention includes incorporating solute molecules within an extremely viscous medium. The solute molecules may be...
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4670860 |
Information holding device
A memory for carrying information comprises a multilayer film having a plurality of monomolecular layers, in which each layer is capable of carrying a charge. Charges are introduced into one side...
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4563753 |
Circuit for reducing degradation of voltage differential in a memory
A virtual ground memory which has four state cells coupled to bit lines has a load directly connected to each bit line to reduce the degradation of the output of a selected memory cell due to...
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4498156 |
Electrochromic nonvolatile memory device
Apparatus for storing and retrieving data, comprising a plurality of electrochromic cells having electrically controllable illumination transparency, a voltage source coupled to each electrochromic...
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4288861 |
Three-dimensional systems
A multiple beam or "multiphoton" absorption effect is used for creating three-dimensioal sensible objects including optical elements and three-dimensional computer-type data storage and retrieval...
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4078229 |
Three dimensional systems
Method and media are provided for producing three-dimensional sensible objects by the intersection of radiation beams, whereby an active region is produced as a result of the intersection of said...
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3977009 |
Information recording with an organic compound capable of assuming two or more convertible stable aggregation states
A recording method which comprises selectively applying a DC or AC electric field to a layer of a recording medium on a support, the recording medium comprising at least one organic compound...
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3833894 |
ORGANIC MEMORY DEVICE
The organic memory device described herein comprises an organic compound having a molecular structure which includes a mixed valence double well of an organic or organometallic redox couple...
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3668663 |
OPTICAL STORAGE DEVICES
A new class of optical, switching and memory devices is based on the different refractive indices associated with each of the two states of the reversible photochemical interconversion between...
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3634853 |
LIQUID DISPLACEMENT ENCODER
A digitizer is disclosed, wherein the relative change in volume between two fluids is transposed directly into a digital code, in that a pattern of elemental liquid columns in a capillary is...
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3347614 |
Magnetic film display device
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3274565 |
Optical-photoconductive reproducer utilizing insulative liquids
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3251688 |
Liquid transfer development
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3140143 |
Information recording
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3072742 |
Generation of optical surfaces
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2890414 |
Electrochemical coulometer
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2807416 |
Device for automatically counting blood cells
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