Patent US3596261A successfully refreshed from Google Patents.
US3596261A
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Single wall domain switching arrangement
Assignee: AT&T Inc
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Filing: 1969-11-17
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Granted: 1971-07-27
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Expires: 1989-11-17
Abstract
Abstract A single wall domain propagation arrangement wherein magnetically soft overlays define propagation channels in a sheet of magnetic material in response to a reorienting in-plane field is adapted herein for providing a ''''coincident-domain'''' memory. The overlay at each bit location of the memory is structured to serve the function of a latching switch. A domain pattern advanced along one of coordinate domain propagation accessing channels is rerouted to the coordinate channel when the associated switch is closed.
Inventors
- 👤 Anthony J Perneski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:37
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/14; H; H03; H03K; H03K17/00; H03K17/51; H03K17/80; H03K17/84; H04; H04Q; H04Q3/00; H04Q3/0008; H04Q3/0012
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
87 words
Apparatus including a material in a plane in which single wall domains can be moved, means comprising a magnetically soft overlay for defining first and second recirculating positions and a propagation channel therebetween for one of said domains, means for generating a reorienting in-plane field for propagating domains in said material, said overlay further defining first and second propagation channel pairs intersecting at said first and second recirculating channels respectively, and means for propagating single wall domains concurrently along said channels of said first or second pairs.
Claim 2
Dependent Claim
87 words
Apparatus including a material in a plane in which single wall domains can be moved, means comprising a magnetically soft overlay for defining first and second recirculating positions and a propagation channel therebetween for one of said domains, means for generating a reorienting in-plane field for propagating domains in said material, said overlay further defining first and second propagation channel pairs intersecting at said first and second recirculating channels respectively, and means for propagating single wall domains concurrently along said channels of said first or second pairs.
Claim 3
Dependent Claim
21 words
Apparatus in accordance with claim 1 wherein said overlay includes bar and T-shaped geometries and said in-plane field reorients by rotation.
Claim 4
Dependent Claim
28 words
Apparatus in accordance with claim 2 also including means for selectively providing a pattern of single wall domains along a selected channel of said first propagation channel pair.
Claim 5
Dependent Claim
22 words
Apparatus in accordance with claim 3 including means for selectively detecting domains in the other channel of said first propagation channel pair.
Claim 6
Dependent Claim
154 words
Apparatus comprising a material in a plane in which single wall domains can be moved, means including a magnetically soft overlay for defining alternate first and second recirculating positions for single wall domains and a propagation channel therebetween, means for generating a reorienting in-plane field for moving domains along said channel and said positions defined by said overlay, said overlay further defining first and second coordinate single wall domain propagation channel pairs intersecting at said first and second recirculating positions in a manner such that domains being advanced simultaneously along both channels of one of said pairs dislodge a domain being moved in the associated recirculating position for movement of the recirculating domain to the alternate recirculating position, and means for moving a pattern of single wall domains along one channel of a selected pair of channels to said alternate position for deflection of said pattern to the other channel of said coordinate pair.
Claim 7
Dependent Claim
154 words
Apparatus comprising a material in a plane in which single wall domains can be moved, means including a magnetically soft overlay for defining alternate first and second recirculating positions for single wall domains and a propagation channel therebetween, means for generating a reorienting in-plane field for moving domains along said channel and said positions defined by said overlay, said overlay further defining first and second coordinate single wall domain propagation channel pairs intersecting at said first and second recirculating positions in a manner such that domains being advanced simultaneously along both channels of one of said pairs dislodge a domain being moved in the associated recirculating position for movement of the recirculating domain to the alternate recirculating position, and means for moving a pattern of single wall domains along one channel of a selected pair of channels to said alternate position for deflection of said pattern to the other channel of said coordinate pair.
Claim 8
Dependent Claim
122 words
Apparatus comprising a material in a plane in which single wall domains can be moved, means comprising a magnetically soft overlay pattern for defining a matrix of first and second recirculating position pairs and a propagation channel between each pair, means for generating a reorienting in-plane field for moving domains with respect to said overlay pattern, said overlay further defining for single wall domains a coordinate array of propagation channels intersecting at associated ones of said recirculating positions, means for providing a pattern of single wall domains in a selected channel of said coordinate array, and means for selectively moving single wall domains between the positions of said pairs in a manner to selectively reroute said pattern to a selected coordinate channel.
Claim 9
Dependent Claim
122 words
Apparatus comprising a material in a plane in which single wall domains can be moved, means comprising a magnetically soft overlay pattern for defining a matrix of first and second recirculating position pairs and a propagation channel between each pair, means for generating a reorienting in-plane field for moving domains with respect to said overlay pattern, said overlay further defining for single wall domains a coordinate array of propagation channels intersecting at associated ones of said recirculating positions, means for providing a pattern of single wall domains in a selected channel of said coordinate array, and means for selectively moving single wall domains between the positions of said pairs in a manner to selectively reroute said pattern to a selected coordinate channel.
Claim 10
Dependent Claim
41 words
Apparatus in accordance with claim 6 wherein said last-mentioned means comprises means for providing a single wall domain along each of coordinate ones of said array of propagation channels for synchronous advancement to a recirculating position of one of said pairs.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |