Matches 51 - 100 out of 128 < 1 2 3 >
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4403304 Replicator for ion-implanted bubble domain devices  
A replicator for a magnetic bubble domain device including a hairpin loop conductor element traversing first and second spaced apart bubble domain guide structures. The replicator functions to...
4402060 Gap tolerant merge element for contiguous-disk bubble devices  
A gap tolerant merge element for contiguous-disk bubble devices is disclosed. The merge element includes one input track with a tip portion substantially facing the cusp portion of a second input...
4394746 Swap gate for ion-implanted contiguous-disk bubble devices  
A swap gate for ion-implanted contiguous disk bubble devices using folded minor loops is disclosed. The bubble device has a major loop, a folded minor loop and a swap element positioned between the...
4386418 Conductorless swap gate for ion-implanted contiguous-disk bubble devices  
A conductorless swap gate for ion-implanted contiguous-disk bubble devices using a folded minor loop and means for reversing the rotation of the rotating magnetic field is disclosed. The bubble...
4372985 Ion implantation for hard bubble suppression  
A method for processing a magnetic bubble domain device for hard bubble suppression comprising the steps of providing a non-magnetic substrate; providing a thin layer of magnetic material capable...
4360893 Magnetic devices and method of manufacture  
Magnetic devices exemplified by bubble devices depend upon functional magnetic layers initially produced by epitaxy and reduced to effectively thinned surface layers by ion implantation....
4360904 Segmented stretcher detector for magnetic bubble domain devices  
A magnetic bubble domain device including a segmented stretcher detector. The detector is formed from a propagation path for magnetic bubble domains, and a first replicator disposed adjacent the...
4357683 Magnetic bubble memory with ion-implanted layer  
In ion-implanted bubble memories where a patterned ion-implanted layer defines the propagation paths and the special functional elements, a uniform additional ion implant layer provides for a high...
4357684 Reverse-rotation transfer gates  
Transfer between paths in ion-implanted magnetic bubble memories has been achieved without the use of transfer conductors. The transfer mechanism takes advantage of the three-fold anisotropy of the...
4346457 Dovetail propagation structure for contiguous disk bubble devices  
A propagation track for use in contiguous disk bubble devices consists of a plurality of spaced dovetail shaped elements which are connected at one end thereof by a track portion which faces in the...
4346456 Magnetic bubble device  
A magnetic bubble device in which ions are implanted, under different conditions, in at least two kinds of regions of a magnetic thin film serving as a medium for propagation of a magnetic bubble....
4343038 Magnetic bubble domain structure  
A magnetic bubble domain structure comprising a bubble domain layer supported by a nonmagnetic substrate. A control layer is superimposed on the major surface of the domain layer which remote from...
4342098 Asymmetric sawtooth contiguous disk propagation pattern  
A propagation pattern for contiguous disk bubble devices consists of a plurality of parallel propagation tracks in which each propagation track is asymmetric. Adjacent propagation tracks are...
4334291 Ion-implanted magnetic bubble memory with domain confinement rails  
Operating margins for major-minor magnetic bubble memories are improved by use of protective rails between minor loops to prevent loss of information due to stripout. The rails, as are the...
4308592 Patterned kill of magnetoresistive layer in bubble domain chip  
A technique and structure is described in which bubble domain devices can be made, and particularly bubble domain devices comprisng contiguous propagation elements. A thin magnetoresistive layer,...
4283775 Contiguous disk bubble storage  
A bubble storage system using contiguous propagation elements is described using magnetically soft drive layers for movement of the bubble domains in a bubble domain film, in response to the...
4283776 Ion-implanted magnetic bubble memory  
A gap between sets of contiguous discs defined by nonimplanted regions in an otherwise ion-implanted bubble layer allows an isolation between bubbles which leads to the achievement surprisingly...
4272817 Multiplexed single wall domain generators  
An improved magnetic domain generator for a magnetic arrangement employing a layer of garnet in which single wall domains (bubbles) are moved by an in-plane rotating magnetic field. A first domain...
4263662 Guard rail for contiguous element bubble chips  
Guard rails are described for particular use with magnetic bubble domain chips using contiguous propagation elements. These guard rails generally surround the active device area (storage area) of...
4253159 Ion-implanted bubble memory with replicate port  
A replicator for an ion-implanted magnetic bubble memory includes an offset hairpin geometry. The conductor is associated with features in adjacent bubble paths which exhibit strong attracting...
4249249 Ion-implanted bubble memory  
A magnetic bubble memory of the G-shaped organization is implemented by ion-implantation. Attractive operating margins are realized by the use of transfer-out arrangements which moves bubbles in...
4247912 Magnetic bubble domain chip with enhanced propagation margins  
In magnetic bubble domain chips using layers of crystalline material having in-plane magnetization for propagation, hard bubble suppression, etc., asymmetric propagation often results due to...
4238836 Fail safe magnetic bubble memory  
The familiar G-shaped, non-closed, major path in a major-minor, magnetic bubble memory is formed controllably into a closed circumferential major loop about the minor loops during operation. A...
4198689 Garnet magnetoresistive sensor for magnetic fields  
The discovery of a magnetoresistive effect in oriented, crystalline, semiconducting iron garnet materials is used to design devices which detect the presence or orientation of magnetic fields. The...
4181979 Magnetic bubble memory with single-level bubble functional elements  
Magnetic bubble functional elements are implemented by aperture patterns in a single layer of electrically-conducting material. The operations of the elements are compatible with single-level...
4164029 Apparatus for high density bubble storage  
A magnetic bubble storage system and a method for making it using only two masking steps, one of which is critical. In a preferred embodiment, the storage regions are comprised of ion implanted...
4164026 Contiguous element field access bubble lattice file  
A bubble domain storage system is described which has the best features of contiguous element bubble propagation systems and bubble lattice file systems. An array of magnetic bubble domains, such...
4151599 Magnetic bubble display units  
In a display unit utilizing magnetic bubbles, selective extinction of the magnetic bubbles in a matrix results in a pattern of letters and/or images which are combinations of the magnetic bubbles...
4149266 Discrimination of bubble state by bubble collapse  
A method for detecting the wall state of a soft bubble based upon the collapse characteristics of the bubble domain on a layer of bubble domain supporting material is described. The method includes...
4142250 Bubble translation switch using magnetic charged wall  
A switch for transferring magnetic bubble domains from one propagation path to another using a magnetic charged wall is described. The magnetic charged wall bridges the two propagation paths and...
4142247 Conductor-driven magnetic bubble memory with an expander-detector arrangement  
A magnetic bubble memory with a single electrically-conducting layer for defining a bubble propagate arrangement is adapted to provide a compatible bubble expander detector by a sequence of...
4128895 Magnetic wall assisted bubble domain nucleator  
An improved magnetic bubble domain nucleator is provided which uses a magnetic wall, such as a charged wall, Neel wall, or Bloch wall, to assist nucleation. In a preferred embodiment, a magnetic...
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...
4095279 Orthogonal potential well matrix and amplitude modulated bias field for bubble domain propagation  
An apparatus for and a method of propagating bubble domains is disclosed. The apparatus includes a memory plane that is comprised of a non-magnetic support member upon which are formed a bubble...
4094002 Sacrificial arc suppressors in magnetic bubble memories  
Magnetic bubble memory chips herein are characterized by circuits of permalloy and/or electrical conductors which include patterns designed to be sacrificed if electrical charges build up during...
4086571 Magnetic bubble domain generator and annihilator  
Magnetic bubble domain generator and annihilator for use in a magnetic bubble domain memory device of the major-minor bubble propagation path type. The magnetic bubble domain generator and...
4086572 Magnetic bubble domain replicator  
Magnetic bubble domain replicator structure as employed in a magnetic bubble domain memory circuit device of the major-minor bubble propagation path type. The magnetic bubble domain replicate...
4070658 Ion implanted bubble propagation structure  
An improved ion implanted propagation structure for movement of magnetic bubble domains in a storage medium which comprises an additional magnetic layer capable of ion implantation in combination...
4067002 Field access of bubble domain lattice  
Propagation of a lattice of magnetic bubble domains by field access techniques is achieved by using a periodic array of magnetic chevron elements. In response to the reorientation of a magnetic...
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...
4040020 Bubble lattice device  
A device adapted for use in a low externally applied magnetic field, for example, 15 Oe, with a bubble lattice system is described. The device has a Y shaped channel in which bubbles are propagated...
4040019 Ion implanted magnetic bubble memory device having major and minor rows  
A magnetic bubble domain memory device employing a major row of contiguous regions for major loop bubble travel and a plurality of minor rows of contiguous regions for minor loop bubble travel,...
4040038 Column accessing of elements in confined arrays  
A technique for accessing interactive elements, such as magnetic bubble domains, which are in confined arrays where the elements are located with respect to one another in accordance with...
4007445 Minimum structure bubble domain propagation  
It has been discovered that magnetic bubble domains can be moved in a magnetic medium without requiring shaped structure along which magnetic poles are created for movement of the domains, and...
4003037 Magnetic bubble domain processing apparatus and method  
Bubble domain logic apparatus and a method of processing data in the form of a stream of magnetic bubble domains which represent data by their coding (such as presence and absence of bubble...
4001673 Method of testing and repairing magnetic bubble domain chip  
A method of both testing all loops of a long serial magnetic bubble domain chip, and repairing the chip for automatic bypass of defective loops. Each repair station associated with each loop is...
3996576 Optical waveguide magnetic bubble detection  
A magnetic bubble detector utilizing a thin film optical waveguide. Light is optically coupled into the guide for propagation of linearly polarized light along a first axis thereof. Magnetic...
3996573 Bubble propagation circuits and formation thereof  
A magnetic domain memory comprising a planar layer of magnetic material in which magnetic bubbles are moved by a rotating magnetic field in the plane of the layer. At least one circuit or path is...
3996577 Method and apparatus for the controlled generation of wall-encoded magnetic bubble domains  
A magnetic layer is exchange coupled to a bubble medium in an area where bubble domains are nucleated, and is used together with or without an externally applied in-plane magnetic field to...
3996571 Double layer bubble domain lattice system  
A bubble domain lattice system in which information exists as the presence and absence of bubble domains. A lattice exists in a conveyor layer and lattice bubble domains are coupled...
Matches 51 - 100 out of 128 < 1 2 3 >