Patent US3680066A successfully refreshed from Google Patents.
US3680066A
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Single wall domain fanout circuit
Assignee: AT&T Inc
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Filing: 1971-07-08
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Granted: 1972-07-25
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Expires: 1991-07-08
Abstract
Abstract A single wall domain fanout circuit is provided by an electrical conductor of serpentine geometry having consecutive loops of increasing amplitude. Increasing numbers of domains, associated with consecutive loops, propagate interactions therebetween responsive to an information domain.
Inventors
- 👤 John Alexander Copeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:29
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/0866
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
145 words
A magnetic domain arrangement comprising a layer of material in which single wall domains can be moved, means for selectively moving a single wall domain into a first position for detection, and means for detecting the presence of a single wall domaiN in said first position, said last-mentioned means comprising an electrical conductor arrangement comprising 0, 1, through N legs, an increasing number of single wall domains being associated with each of said legs in neutral positions with respect to the associated legs such that pulses therein cause only negligible movement of the associated domains, said domain associated with said 0th leg being disposed such that a domain in said first position displaces the former to a first position from which a pulse in said 0th leg moves said domain to a second position for interaction with the domains associated with the next adjacent leg.
Claim 2
Dependent Claim
145 words
A magnetic domain arrangement comprising a layer of material in which single wall domains can be moved, means for selectively moving a single wall domain into a first position for detection, and means for detecting the presence of a single wall domaiN in said first position, said last-mentioned means comprising an electrical conductor arrangement comprising 0, 1, through N legs, an increasing number of single wall domains being associated with each of said legs in neutral positions with respect to the associated legs such that pulses therein cause only negligible movement of the associated domains, said domain associated with said 0th leg being disposed such that a domain in said first position displaces the former to a first position from which a pulse in said 0th leg moves said domain to a second position for interaction with the domains associated with the next adjacent leg.
Claim 3
Dependent Claim
15 words
An arrangement in accordance with claim 1 wherein said legs are connected electrically in series.
Claim 4
Dependent Claim
31 words
An arrangement in accordance with claim 2 wherein said means for selectively moving comprises a serpentine conductor connected electrically in series with said legs and means for providing bipolar pulses therein.
Claim 5
Dependent Claim
13 words
An arrangement in accordance with claim 3 wherein said legs are increasingly longer.
Claim 6
Dependent Claim
29 words
An arrangement in accordance with claim 4 wherein each of said domains associated with said Nth leg couples an associated detector when moved by said pulse in said leg.
Claim 7
Dependent Claim
25 words
An arrangement in accordance with claim 5 wherein said detectors comprise magnetoresistive elements connected electrically in series and means for maintaining a dc current therein.
Claim 8
Dependent Claim
104 words
A single wall domain arrangement comprising a layer of material in which single wall domains can be moved, means for defining a stable and an astable position for each of a first, second and third domain, means for moving an information representative domain to an output position in a manner to interact with and thus offset said first domain from the associated stable to the associated astable position and first means for displacing said first domain in the associated astable position to a second position in a manner to interact with and thus offset said second and third domains to their respective astable positions.
Claim 9
Dependent Claim
104 words
A single wall domain arrangement comprising a layer of material in which single wall domains can be moved, means for defining a stable and an astable position for each of a first, second and third domain, means for moving an information representative domain to an output position in a manner to interact with and thus offset said first domain from the associated stable to the associated astable position and first means for displacing said first domain in the associated astable position to a second position in a manner to interact with and thus offset said second and third domains to their respective astable positions.
Claim 10
Dependent Claim
38 words
An arrangement in accordance with claim 7 wherein said first means for displacing comprises a first electrical conductor, said arrangement also comprising a second electrical conductor for displacing said second and third domains from their respective astable positions.
Claim 11
Dependent Claim
18 words
An arrangement in accordance with claim 8 wherein said first and second electrical conductors are connected in series.
Claim 12
Dependent Claim
128 words
A single wall domain arrangement comprising a layer of material in which single wall domains can be moved, and means for moving first and second domains in said layer between associated stable and astable positions, said last mentioned means comprising an electrical conductor, means for defining first and second stable positions for said first and second domains neutral with respect to said conductor so that a first pulse in said conductor is inoperative to move said domains, and means for moving an information domain into a position in proximity with said first and second domains in a manner to interact with said domains for offsetting said first and second domains to said associated astable positions from which further movement thereof does occur in response to said first pulse.
Claim 13
Dependent Claim
128 words
A single wall domain arrangement comprising a layer of material in which single wall domains can be moved, and means for moving first and second domains in said layer between associated stable and astable positions, said last mentioned means comprising an electrical conductor, means for defining first and second stable positions for said first and second domains neutral with respect to said conductor so that a first pulse in said conductor is inoperative to move said domains, and means for moving an information domain into a position in proximity with said first and second domains in a manner to interact with said domains for offsetting said first and second domains to said associated astable positions from which further movement thereof does occur in response to said first pulse.
Claim 14
Dependent Claim
41 words
An arrangement in accordance with claim 10 also including means for applying first and second pulses of opposite polarity to said conductor wherein said second pulse is operative to return said first and second domains to said third and fourth positions.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |