Matches 51 - 100 out of 152 < 1 2 3 4 >
Match Document Document Title
4158811 Method and apparatus for testing and setting magnetic field strength of permanent magnets in magnetic bubble domain modules  
Method and apparatus for testing and setting the field strength of permanent magnets in a magnetic bubble domain chip module, wherein the final molded module is formed to contain a pair of...
4156934 Serial bubble memory store  
Disclosed is a bubble memory system adapted for construction on a single construction unit such as a pluggable card and for providing to prospective users a standard interface including an input...
4153947 Conductor driven field access magnetic bubble memory propagation system  
In a magnetic bubble memory device, an improvement to the means for providing an in-plane rotational magnetic field to advance bubbles through some appropriate, staged structural form of permalloy...
4153948 Adjustable magnetic bias field structure for magnetic bubble devices  
An adjustable magnetic bias field structure for magnetic bubble devices. A pair of parallel facing magnetically permeable plates are adjustably separated by a number of threaded magnetically hard...
4151608 Circuit arrangement for suppressing magnetic induction noise due to an alternating magnetic field  
A third conductor is added to a pair of first and second parallel conductors transmitting signals, a part of which conductors are located in an alternating magnetic field. The three conductors are...
4151600 Magneto-resistive detector with scanning bubble domain  
A device for reading information-representing magnetization patterns by means of a magneto-resistive element. The magneto-resistive element is in magnetic flux coupling with a plurality of...
4150440 Bubble memory package  
A bubble memory package is comprised of a nonmagnetizable heat sink formed with a pocket for receiving the field coil and magnetic chip carrier assemblies. The heat sink is massive and capable of...
4149265 Method of improving the operation of a single wall domain memory system  
A method of and an apparatus for improving the selective positioning of single wall domains or bubble domains in a bubble domain memory system is disclosed. The method includes the use of slotted...
4128898 Structuring of bubble domains in a bubble domain memory plane  
Defining the structuring of bubble domains in the magnetizable layer of a bubble domain memory plane is determined by modification of the magnetic characteristics of the magnetizable layer in the...
4122538 Single wall domain, stripe domain memory plane  
A laminated, integral structure that forms a bubble memory plane for the generation, storage and transfer of single wall domains, bubble domains or bubbles is disclosed. The memory plane is formed...
4120042 Magnetic bubble information writing device  
A magnetic bubble information writing device capable of carrying out writing without erasing old information representing either "0" or "1" at a location, where new information is to be written, by...
4114191 Bubble domain structuring in bubble domain memory plane  
Defining the structuring of bubble domains in a magnetizable layer of a bubble domain memory plane is determined by modifying the magnetic characteristics of the magnetizable layer in the...
4110838 Magnetic bubble memory package  
A magnetic bubble domain package which insures a coplanar relationship between the signal leads and the active surface of the magnetic bubble domain chip and also insures the precise location of...
4106106 Uniform rotating field network structure to efficiently package a magnetic bubble domain memory  
A unique and compact open coil rotating magnetic field network structure to efficiently package an array of bubble domain devices is disclosed. The field network has a configuration which...
4101970 Magnetic bubble module  
In a magnetic bubble module comprising magnetic bubble chips disposed on substrates and driving coils surrounding the magnetic bubble chips, at least one of the substrates extends from the inside...
4100608 Exchange stack buffer memory  
There is provided a memory system, for example, a magnetic bubble domain memory, which includes an exchange stack buffer memory between a main storage area and other portions of a bubble domain...
4096581 External drive coil magnetic bubble package  
A magnetic bubble domain package suitable for single or multiple chips in which the coil assembly for producing the rotating magnetic field necessary for bubble movement and logical operations to...
4094003 Sonic magnetic domain sensor  
This bubble domain sensor is capable of sensing the presence or absence of a bubble at a predetermined location within bubble supporting material regardless of whether the bubble is stationary or...
4091362 Bias structure to efficiently package a magnetic bubble domain device  
A single, compact bias structure to efficiently package a plurality of magnetic bubble domain device chips having different bias requirements. The vertical magnetic field distribution within the...
4091459 Store comprising drivable domains  
A storage device comprising a main magnetic field generator, a rotary magnetic field generator and a number of plates of magnetic material which are arranged transverse to the main magnetic field...
4090252 Rotational field generator for bubble memory package  
For a bubble memory package, the two conductors operative to generate the rotational magnetic field consist of two thin, solid disks with a number of current contact points around their respective...
4086661 Cylindrical magnetic domain element  
A cylindrical magnetic domain element is disclosed which utilizes a cylindrical magnetic domain (a magnetic bubble) produced by the application of a bias magnetic field to a magnetic sheet of...
4081861 Matrixed magnetic bubble memories  
A magnetic bubble memory organization comprising a plurality of magnetic bubble memory chips arranged in rows and columns to form a matrix. Each chip has a plurality of memory locations for storing...
4075709 Large capacity bubble domain memory with redundancy  
A large capacity bubble memory device using a basic storage cell design. The basic storage cell is repeated, typically in matrix form, on a suitable bubble domain structure. The cell design is...
4075708 Large capacity major-minor loop bubble domain memory with redundancy  
A large capacity bubble memory device using a basic major-minor loop storage cell design. The basic storage cell is repeated, typically in matrix form, on a suitable bubble domain structure. The...
4068219 Magnetic domain bias field assembly  
An improved bias field assembly for reducing power losses in a magnetic domain memory device. A preferred embodiment employs rectangular permanent magnets positioned above and below a drive...
4059829 Multi state magnetic bubble domain cell for random access memories  
A multi-state memory cell which uses magnetic bubble domains in uniaxial material is described. The cell includes a channel in which a number of stable bubble positions separated by barriers is...
4058799 Block oriented random access bubble memory  
A block oriented random access memory (BORAM) magnetic bubble domain system which provides increased throughput of information and reduced access or read time for the same information as compared...
4058801 Field access method for bubble memories  
Field access system for use in propagation of bubbles is disclosed. The field access system combines discrete drive elements with a continuous drive film. An example is a Permalloy overlay...
4045786 Magnetic domain memory device having an improved drive coil arrangement  
An improved drive coil for a magnetic domain memory device has varying separation between adjacent conductors to improve the uniformity of the magnetic field.
4040039 Single wall domain latrix for optical data processing system  
A light accessable transistor matrix (latrix) that utilizes an optical page composer having single wall domains, i.e., bubbles, in a layer of magnetizable material as the optical shutter or light...
4027300 Bubble memory package  
Dual, slotted reflection plates for a bubble memory package use electrically and thermally conductive plates spaced just far enough apart to accept one or two levels of bubble memory devices...
4027295 Magnetic bubble device  
A magnetic bubble device has a flat faced drive coil consisting of electrically conductive material having flat windings. The magnetic bubble chip of the device is positioned in the magnetic field...
4027298 Magnetic bubble memory bias magnet arrangement  
An in-plane magnetic holding field, long known to provide improved operating margins for a magnetic bubble memory during stop-start operation, is produced by a unique bias magnet design which...
4025911 Magnetic bubble memory bias magnet arrangement  
An in-plane magnetic holding field, long known to provide improved operating margins for a magnetic bubble memory during stop-start operation, is produced by unique bias magnet designs each of...
4024517 Continuous data stream FIFO magnetic bubble domain shift register  
There is described a simple first-in, first out (FIFO) magnetic bubble domain shift register which has continuous data storage capability. In a preferred embodiment, two parallel detector branches...
4018491 Carrier for devices  
A carrier for making electrical connection with a microelectronic device without bonding the device to the carrier is disclosed. The carrier is designed to accommodate a device such as, but not...
4017604 Magnetic bubble chip packaging assembly  
A packaging assembly for magnetic bubble chips comprising at least one module assembly board having a surface to which is secured in a substantially planar array a plurality of magnetic bubble...
4015249 Transfer of domains between fields  
A system suitable to transfer a bubble domain from one field to a second field where the field is the largest area formed by exposing a pattern and which all of the dimensions are critical is...
4012723 Magnetic bubble memory packaging arrangement and its method of fabrication  
Magnetic bubble chips are packaged along with X, Y and Z magnetic field generating means. The package is comprised of a metal lead frame upon which a magnetic bubble chip such as a memory chip...
4012724 Method of improving the operation of a single wall domain memory system  
A method of and an apparatus for improving the selective positioning of single wall domains or bubbles in a memory system is disclosed. The method includes the use of slotted intersecting digit and...
4011550 Method of improving the operation of a single wall domain memory system  
A method of improving the selective positioning of single wall domains or bubbles in a memory system is disclosed. The method includes the use of a predetermined stripline-magnetic layer separation...
4010454 Magnetic bubble signal generator  
A magnetic memory including a number of magnetic bubble recirculating loops and a common channel controls the frequency of signals generated by flip-flops connected to a bubble detector in the...
4001792 Drive field for circular magnetic domain devices  
A circular magnetic demain device which includes bias magnets for applying a steady bias magnetic field in a direction normal to a major surface of the device's uniaxial magnetic layer; rotating...
3997877 Timing control means for a magnetic domain memory  
A non-volatile digital memory is utilized to generate digital pulses for controlling memory operations of a magnetic domain memory system. Each word stored in the memory contains data corresponding...
3996574 Magnetic bubble, field-access assembly  
A dual-in-line package (DIP) for a bubble memory is achieved by mounting the bubble chip in a cantilevered position in the plane of a rigid conductor arrangement which is interconnected to a DIP...
3990060 Cryptographic magnetic bubble domain memory  
The data stored in a coincident block access bubble domain memory with bit-organized chips is encrypted by skewing or permuting selected word bits by predetermined amounts. This is implemented by...
3983547 Three-dimensional bubble device  
A three-dimensional magnetic bubble device formed by depositing, on a flexible substrate, a plurality of pseudo-chips of amorphous metallic film capable of supporting magnetic bubbles. These...
3971126 Method of fabricating magnetic field drive coils for field accessed cylindrical domain memories  
A magnetic field drive coil arrangement includes a hollow rectangular coil form having a pair of rectangular openings at opposite lengthwise ends of the form, a first coil wound around the coil...
3972035 Detection of magnetic domains by tunnel junctions  
Tunnel junctions are used to detect magnetic domains, such as bubble domains, using the change in Fermi level of one (or both) electrodes due to the magnetic field of the domain. The Fermi level...
Matches 51 - 100 out of 152 < 1 2 3 4 >