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Match Document Document Title
7394691 Semiconductor memory device which prevents destruction of data  
A plurality of memory cells each storing n values (n is a natural number which is not smaller than 3) are arranged in a matrix form in a memory cell array, and each memory cell is connected with a...
5473466 Magneto-optical display and method of forming such display  
A thin transparent epitaxial layer of a magnetizable material (e.g. gallium ferrite) is deposited on a substrate of a dielectric transparent material (e.g. gadolinium gallium garnet). A mask made...
5396455 Magnetic non-volatile random access memory  
A non-volatile random access memory is described incorporating a plurality of memory cells, each memory cell having a Hall effect device including amorphous magnetic material and a switch for...
4975871 Magnetic bubble memory module with interconnection member  
According to one embodiment of the present invention, a magnetic bubble memory module comprising a flexible printed circuits substrate (FPC3), on which a magnetic bubble memory chip (CHI) is...
4884235 Micromagnetic memory package  
A package comprised of a plurality of truncated confocal, ellipsoidal layers of substantially equal length and having a common opening therethrough along a central axis for receiving a...
4868786 Magnetic bubble memory with main and auxiliary printed wiring film  
A magnetic bubble memory device comprising a chip assembly having a plurality of bubble memory chips superposed one above the other on a main printed wiring film. The lowermost chip is electrically...
4791604 Sheet random access memory  
A sheet random access memory (SHRAM) is a truly random access, nonvolatile and transportable memory characterized by the cell density, size and power requirements of smaller dynamic memories but...
4731751 Magnetic bubble memory device  
A magnetic bubble memory device comprises a magnetic bubble memory chip, a unit for generating a bias field, a magnetic shield, and a unit for compensating the bias field, wherein the...
4730271 Magnetic field confirming case with inclined portions for magnetic bubble memory module  
A magnetic bubble memory chip is disposed at a position surrounded by a rectangular annular core having two pairs of opposite sides wound by a pair of wires, respectively, and is covered by a case...
4710895 Magnetic bubble memory module with protected terminals  
A magnetic bubble memory module containing a magnetic bubble memory device and its analog peripheral circuits mounted on a substrate, having outer input/output lead terminals, allowing the module...
4694423 Magnetic bubble memory module  
A magnetic bubble memory module having a rectangular core shaped like a picture frame providing windings on respective two pairs of opposite sides, at least one magnetic bubble memory chip disposed...
4692898 Bubble memory bias field structure  
A bias magnet for a bubble memory device is comprised of a single material low permeability magnet contoured to enhance the magnetic field in the central area of the magnet and is adapted to be...
4663737 Magnetic bubble memory unit  
In a magnetic bubble memory unit comprising two pairs of windings confronting in parallel each other, a printed circuit board having a magnetic bubble memory chip thereon surrounded by the windings...
4660172 Storage medium for electronic data processing  
A storage medium is disclosed which includes a plate having a plurality of taps arranged near the peripheral edges and on each surface thereof. Each tap is connected to a storage element. The taps...
4592014 Magnetic bubble memory device  
A magnetic bubble memory device comprises a cassette and a body. The cassette has a bias magnetic field generator adapted to generate a bias magnetic field for sustaining magnetic bubbles within a...
4567576 Method for producing a magnetic bias field  
The invention provides a method for producing a magnetic bias field in a magnetic bubble domain memory device. The method comprises coupling a magnetic bubble domain element with a permanent...
4500177 Method and device for creating switchable redundancy with a magnetic element  
A nonmagnetic substrate is shown having a magnetic film that has been separated into a grid-like pattern of spaces to form quadrilateral magnetic elements. The spaces are filled with conductors...
4500176 Method and device for improving a conductive switching grid for switchable magnetic elements  
An improved conductive grid for a magneto-optic display is shown having individual magnetic and transparent post elements separated from one another by an orthogonal grid-like pattern. Conductors...
4497545 Method and device for increasing the density of a plurality of switchable magnetic elements  
An improved grid pattern is shown for increasing the density of magnetic post elements, within a magneto-optic display, for example, wherein the post elements are separated by a grid-like pattern...
4470131 Bubble memory device and method of manufacturing the same  
A bubble memory device comprises an insulating substrate holding a bubble memory chip secured thereto, X- and Y-direction driving coils wound on the insulating substrate for providing an in-plane...
4456974 Magnetic bubble device  
The specification describes a magnetic bubble device which incorporates a Z coil for providing a test magnetic field in addition to the usually provided bias field. In order to reduce package size...
4429349 Coil connector  
Disclosed is an inter-connect board adapted to regularize the means of connecting chip elements, such as coils for a bubble memory, to various related I/O leads, without making this interconnection...
4414646 Magnetic bubble memory devices  
A magnetic bubble memory device comprises a common package accommodating a lurality of pairs of memory chips. In each pair, the two chips have bubble propagation patterns in confronting relation...
4377854 Substrate for magnetic domain device  
In a field-accessed magnetic domain device package assembly, the magnetic domain device carrier or support, the circuit line or conductor carrier, and the magnetic bias field source are integrally...
4360899 Magnetic domain random access memory  
In a non-volatile random access memory, a selected one of a plurality of magnetic cells arranged in an array on a major surface of a substrate is inductively switched between opposite remanent,...
4326267 Data processing system employing portable cards and operating stations making use of magnetic bubble elements  
A credit card or security card data processing system employing portable ds including data processing means in each card adapted to be coupled to a data processing station having its own data...
4321690 Magnetic bubble memory module  
A magnetic bubble memory module according to this invention is so constructed that heat developed by a rotating magnetic field-generating coil assembly is transmitted to linear ferrite plates of a...
4310897 Portable card incorporating magnetic bubble elements  
A portable credit or identity card or the like incorporates magnetic bubble elements. The bubble elements comprise a layer of magnetic material capable of containing magnetic bubbles and which is...
4308591 Bubble memory having non-uniformly wound Y drive field coil  
In a field-access magnetic bubble memory X and Y coils encircle the chip for providing the rotating XY magnetic drive field when conventional drive signals are applied thereto. At least one of the...
4293929 Magnetic bubble memory devices  
Around the magnetic bubble memory chip placed within a recess formed at approximate center of the insulating substrate are arranged a plurality of rod-like members of soft ferromagnetic material to...
4287568 Solid state music player using signals from a bubble-memory storage device  
A solid state music player for reproducing and playing stored digital information from a magnetic bubble-memory device, which has a magnetic bubble-memory module for receiving the bubble-memory...
4283771 On-chip bubble domain relational data base system  
A bubble domain chip is designed to provide the components necessary to perform all essential data-base functions. Many cross-linked loops in parallel allow the interchange of distinct columns of...
4281396 Magnetic strip domain memory system  
A magnetic memory device in which information is stored in the form of strip domains in a layer of magnetic material supported by a layer of ferromagnetic material. The ferromagnetic material...
4246646 Magnetic bubble chip-mounting plane  
In a mounting plane for placing a plurality of magnetic bubble chips in coils for generating a rotating magnetic field which consist of an inner coil and an outer coil, a magnetic bubble...
4234935 Means for maintaining the identification of defective minor loops in a magnetic bubble memory  
An approach for maintaining the identification of the defective minor loops of a bubble domain memory system having one or more major/minor loop arrays is disclosed. The bubble domain memory system...
4229805 Magnetic bubble-domain device  
A magnetic domain device comprising a layer of a magnetic material for the formation of magnetic domains, for example bubbles, under the influence of a bias magnetic field and a propagation...
4221000 Improved bubble domain storage array  
A magnetic bubble domain storage system comprising an array of rows and columns of logical chips are organized into logical half-chips with even numbered bits in one half-chip and odd numbered bits...
4219882 Magnetic domain devices  
A magnetic domain device has a pair of orthogonally disposed coils one inside the other with the device chip disposed in the center of both of the coils, and a flexible substrate to which the...
4213091 Method and apparatus for testing a magnetic domain device  
A method of testing a magnetic bubble device which includes an integral magnetic shield is provided for setting the magnetization of the bias field thereof, in which a leakage magnetic field is...
4209848 Magnetic domain device shield  
Field accessed magnetic domain device apparatus, of the kind which employs an inner and an encompassing outer solenoid as the rotational magnetic field orthogonal drive coil members with the...
4198688 Thermal control members, bubble memory  
A package having bubble memory components including bubble memory chips or modules disposed between bias magnets for maintaining and establishing bubbles in said chips, field drive coils for...
4198687 Bubble memory package with thermal control  
A package of bubble memory components including magnetic bubble memory chips or modules disposed between bias magnets for maintaining and establishing bubbles in said chips, field drive coils for...
4192011 Magnetic domain packaging  
A magnetic bubble device is provided comprising a substrate, a device chip and interconnecting conductors for connecting the device chip to the substrate and for supporting the device chip on the...
4180863 Magnetic domain device modular assembly  
Plural groups of one or more magnetic domain devices each are mounted in an array on the circuitized surface of a common substrate. A rectangular pattern of slots is provided in the substrate...
4174538 Two-dimensional bubble domain memory  
A two-dimensional storage system having two dimensional access is described which offers advantages of speed and effective utilization of available storage area. The system is comprised of a...
4165536 Magnetic bubble package  
A package having bubble memory components comprising an innerassembly of bubble memory chips surrounded by spaced orthogonally oriented drive coils, a printed circuit board having a rigid support...
4165535 Bubble memory drive system using a picture frame core and a reflection box  
A drive system for a bubble memory consists of a drive assembly and an electrically conducting surface enclosing the drive assembly. In a preferred embodiment, the drive assembly consists of a...
4164790 Magnetic bubble packaging arrangement  
A magnetic bubble memory of the field-access type employs a novel package arrangement for containing the field coils within desired limits during fabrication of the package.
4164028 Current access bubble memory system  
A current access bubble memory system includes a method and device for propagating and switching isolated bubbles within a plurality of orthogonal propagation channels. The device includes two...
4160274 Single chip molded magnetic bubble memory package  
A magnetic bubble domain package in which a magnetic bubble domain chip is bonded to conductors disposed on a thin film interconnect member which is formed to allow a reduction in the volume of the...
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