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Class 365/27 - Bias


Subclass of Class 365 - Static information storage and retrieval
Definition: Subject matter where a magnetic bias field aids in the propagation
No. of patents: 28
Last issue date: 09/12/2006


NumberTitleIssue Date
7107235Method of conducting business including making and selling a custom article of footwear
The present invention teaches a method of conducting retail and Internet business including making and delivering a custom article of footwear. The article of footwear taught in the present invention includes a spring element that can provide improved cushioning, st...
09/12/2006
5842170Method for editing in hand held recorder
A method and system for editing messages within a recording system includes a handheld recorder having flash memory and a plurality of memory address pointers for storing messages. The flash memory has a plurality of sequential memory blocks, each memory ...
11/24/1998
5798959Method and device for soft-driving an array of logic gates and suppression of switching distortion
Switching distortion in a digitally controlled attenuator is effectively suppressed and soft-switching in passgate arrays, present at a certain point of a logic signal path, is implemented with a minimum number of additional components. The soft switching...
08/25/1998
5742737Method for recording voice messages on flash memory in a hand held recorder
A solid state digital hand held recording device having a multifunctional switch assembly. A printed circuit board including a microcontroller electrically coupled to switch terminals operates to control the processing of sound into electrical signals and...
04/21/1998
5142491Magnetic bubble recording device
Disclosed is an improved magnetic bubble recording device for optically effecting writing, reading and erasure of information with respect to magnetic bubbles. The magnetic bubble recording device has a basic structure in which a first magnetic film for f...
08/25/1992
5140547Magnetic bubble recording element
A magnetic bubble recording element including a substrate having a transfer channel, a first magnetic layer for carrying a magnetic bubble and being formed on the substrate within and outside of the transfer channel with a surface of the first magnetic la...
08/18/1992
4926377Magnetic memory device using a deflected in-plane magnetic field
In a magnetic memory device for use in selectively carrying out a write-in operation and a readout operation of a pair of vertical Bloch lines as an information carrier in a domain wall of a stripe domain extended along a longitudinal direction, a deflect...
05/15/1990
4692898Bubble 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 slightly larger than the bubble memory chip and in thermal co...
09/08/1987
4613955Bias magnet temperature tracking of magnetic bubble memories
Wide temperature range magnetic bubble memories are realized by using new compositions of rare earth garnets which require nonlinear bias field for operation over a given temperature range. The bias field structure for providing the corresponding nonlinea...
09/23/1986
4567576Method 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 magnet. The permanent magnet is formed of a rare earth metal-con...
01/28/1986
4530072Bubble memory bias field structure
In a bubble memory package, a contoured, shaped magnet and filler plate combination is provided to shape the magnetic field in a uniform fashion to prevent the loss of magnetic flux density which normally tends to occur in the center of the magnet area of...
07/16/1985
4377854Substrate 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 and coactively provided by a common substrate member. The ...
03/22/1983
4322818Magnetic bubble memory device
A magnetic bubble memory chip is arranged in such a way that the major surface of the chip will not cross perpendicularly with the external bias magnetic field to generate a component of the bias magnetic field which is parallel to the major surface. This...
03/30/1982
4207613Bubble device containing a ferrite biasing magnet
A ferrite material has been found that is useful for a biasing magnet whose magnetic field stabilizes single wall magnetic domains. The strong temperature dependence of the ferrite's magnetic field makes the ferrite especially useful when used with magnet...
06/10/1980
4198692Self-biased structure for magnetic bubble domain devices
There is provided a self-biased structure which permits magnetic bubble domain device operation. The invention consists of three layers of material with a bias layer sandwiched between two bubble layers....
04/15/1980
4164028Current 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 orthogonal arrays of parallel current conductors oriented at 4...
08/07/1979
4068219Magnetic 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 coil/substrates assembly. Ferrite shields of the same general siz...
01/10/1978
4062002Device for biasing bubble domains
A device adapted for biasing bubble domains in a low externally applied magnetic bias field. This device is suitable for use when isolated bubbles or a column of bubbles are translated to or from a bubble lattice. The device has a pair of parallel channel...
12/06/1977
4059828Bubble lattice file structure
In an improved bubble lattice file (BLF) structure, two adjacent layers of magnetic bubble domain material are utilized to provide separate media for supporting carrier bubbles or coded bubbles. The coded bubbles, in one layer, represent data stored in th...
11/22/1977
4058800Image pickup element and system utilizing magnetic bubbles
A photomagnetic image pickup element and system, the element comprising a thin film of magnetic material capable of having magnetic bubbles formed therein where the intensity of the magnetic-bubble collapse field varies with temperature; a first conductor...
11/15/1977
4040040Channel bar bubble propagate circuit
The magnetic bubble propagate circuit combines the forces on a bubble due to the properties of a modulated channel in a bubble material with the forces on the bubble due to a field produced by discrete magnetic poles P1 and P2 to mov...
08/02/1977
4040038Column 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 interactions therebetween. In order to improve the access time to a...
08/02/1977
4040020Bubble 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 between a bubble lattice column and either detector means...
08/02/1977
4038541Hard magnetic bubble domain analog multiplier
Hard magnetic bubble domains are propagated in displaced orbits in response to the product of two cyclically varying propagation control fields. The control fields modulate the hard bubble domain diameter and a driving field gradient. Repulsive boundaries...
07/26/1977
4002803Magnetic bubble devices with controlled temperature characteristics
The temperature variation of the bubble collapse field of a class of garnet magnetic bubble layer materials is selected by control of octahedral site substitution during layer growth. This permits the growth of layers, whose temperature dependence of crit...
01/11/1977
4001792Drive 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 magnetic field generating means for causing circular magneti...
01/04/1977
3968481Method of, and apparatus for, establishing self-biased single wall domains
A method of and apparatus for providing single wall self-biased magnetic domains in a film of uniaxial magnetic material. In addition to the conventional uniaxial magnetic film for supporting the single wall domains, a bias film is located adjacent theret...
07/06/1976
3965463Apparatus using amorphous magnetic compositions
Apparatus using amorphous magnetic compositions having uniaxial anisotropy include bubble domain apparatus, light modulating apparatus, permanent magnet systems, and tape and disc information handling systems. The amorphous magnetic composition can be pre...
06/22/1976
 
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