US4032905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bubble domain circuit organization
Assignee: Boeing North American Inc
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Filing: 1975-09-18
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Granted: 1977-06-28
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Expires: 1995-09-18
Abstract
Abstract An on-chip bubble domain circuit organization. One or more storage registers are connected to a propagation path whereby data in the form of magnetic bubble domains (bubbles) may be transferred into and out of the storage registers. The propagation path includes a generator for producing the initial bubbles which are expanded into any desired number of new bubbles by a unique multiple output replicator. A unique input decoder is utilized to determine to which storage register the bubbles from the replicator will be directed along the propagation path. Those bubbles not selected may be annihilated. An output decoder utilizing essentially the same decoding scheme as the input decoder, selectively receives bubbles from the storage register. A transfer and replicate switch is utilized between the storage register and output decoder to selectively transfer bubbles to the output decoder. The output decoder may collapse all of the bubbles from certain storage registers so that only the information from the selected storage register reaches the detector. The detectors in turn produce the chip output signal. External control electronics are utilized to control the selective operation of the various devices utilized in the propagation path.
Inventors
- 👤 Thomas T. Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:21
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/0875; G11C19/0883
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
117 words
A device for magnetic bubble domains comprising: a magnetic sheet having propagation paths in which said domains can be propagated; generator means for selectively producing said domains; replicator means for splitting said domains from said generator means into a plurality of new domains which are applied to different propagation paths; storage means for storing said domains; input decoder means for selectively transferring said new domains from said replicator means to said storage register means; detector means for detecting said domains; switch means associated with said storage means for selectively transferring said domains from said storage means and said detector means; and output decoder means for selectively transferring said domains from said switch means to said detector means.
Claim 2
Independent Claim
117 words
A device for magnetic bubble domains comprising: a magnetic sheet having propagation paths in which said domains can be propagated; generator means for selectively producing said domains; replicator means for splitting said domains from said generator means into a plurality of new domains which are applied to different propagation paths; storage means for storing said domains; input decoder means for selectively transferring said new domains from said replicator means to said storage register means; detector means for detecting said domains; switch means associated with said storage means for selectively transferring said domains from said storage means and said detector means; and output decoder means for selectively transferring said domains from said switch means to said detector means.
Claim 3
Dependent Claim
18 words
The device recited in claim 1 wherein said storage means comprises a propagation path loop for recirculating domains.
Claim 4
Dependent Claim
21 words
The device recited in claim 1 including means for applying magnetic fields thereto to support and move said magnetic bubble domains.
Claim 5
Dependent Claim
37 words
The device recited in claim 13 wherein said shifting means includes at least one column of chevrons for expanding domains from said replicator means, and pusher bar means for selectively restricting the size of an expanded domain.
Claim 6
Dependent Claim
43 words
The device recited in claim 1 wherein said storage means comprises a plurality of separate storage loops, and said switch means comprises a plurality of switches connected in series for simultaneous operation, each of said switches associated with a separate respective storage loop.
Claim 7
Dependent Claim
56 words
The device recited in claim 1 wherein said input decoder means includes at least one conductor disposed adjacent said magnetic sheet and crossing said propagation paths, said conductor including at least one portion thereof adapted to apply a magnetic field to selectively annihilate magnetic bubble domains in said magnetic sheet in proximity to said one portion.
Claim 8
Dependent Claim
32 words
The device recited in claim 1 including: control means for supplying control signals to the generator means, switch means, input decoder means and output decoder means in order to selectively activate same.
Claim 9
Dependent Claim
38 words
The device recited in claim 1 wherein said generator means, said replicator means, said input decoder means, said output decoder means and said switch means are coupled together by a common propagation path for transferring said bubble domains.
Claim 10
Dependent Claim
70 words
The device recited in claim 7 wherein said conductor includes portions thereof which are offset relative to each other so as to concurrently apply a magnetic field to different portions of said propagation paths whereby magnetic bubble domains are annihilated in only some portions of said propagation path and in other portions of said propagation path said magnetic field does not effect the propagation path of said magnetic bubble domains.
Claim 11
Dependent Claim
32 words
The device recited in claim 4 wherein the distance covered by said chevron column in said shifting means can be traversed by said magnetic bubbles within one period of the rotating field.
Claim 12
Dependent Claim
23 words
The device recited in claim 6 wherein each of said portions of said conductor is relatively narrower than the remainder of said conductor.
Claim 13
Independent Claim
136 words
A device for magnetic bubble domains comprising: a magnetic sheet having propagation paths in which said domains can be propagated; storage means for storing said domains; generator means for selectively producing said domains; replicator means for selecting said domains from said generator means for splitting said domains into a plurality of new domains; shifting means for diverting said new magnetic domains to any desired propagation path; said shifting means comprises at least one column of chevrons and pusher bar means; input decoder means for selectively transferring said new domains from said shifting means to said storage register means; detector means for detecting said domains; and output decoder means for selectively transferring said domains to said detector means; switch means associated with storage mean for selectively transferring said domains between said storage means and output decoder means.
Claim 14
Independent Claim
136 words
A device for magnetic bubble domains comprising: a magnetic sheet having propagation paths in which said domains can be propagated; storage means for storing said domains; generator means for selectively producing said domains; replicator means for selecting said domains from said generator means for splitting said domains into a plurality of new domains; shifting means for diverting said new magnetic domains to any desired propagation path; said shifting means comprises at least one column of chevrons and pusher bar means; input decoder means for selectively transferring said new domains from said shifting means to said storage register means; detector means for detecting said domains; and output decoder means for selectively transferring said domains to said detector means; switch means associated with storage mean for selectively transferring said domains between said storage means and output decoder means.
Claim 15
Dependent Claim
31 words
The device recited in claim 1 including: shifting means adapted to receive said new domains from said replicator means and operative to divert said new domains to any desired propagation path.
Claim 16
Dependent Claim
18 words
The device recited in claim 1 wherein said propagation paths comprise a plurality of columns of chevron elements.
Claim 17
Dependent Claim
63 words
The device recited in claim 1 wherein said replicator means is a passive replicator and comprises at least two adjacent columns of chevron elements; propagation path portions coupled to one of said adjacent columns to supply domains thereto from said generator means, and further propagation path portions coupled to the other of said adjacent columns to receive said plurality of new domains therefrom.
Claim 18
Dependent Claim
55 words
The device recited in claim 1 wherein said replicator means comprises a plurality of passive replicator means; shifting means interconnecting said plurality of passive replicator means such that at least one of said new domains produced by each of said passive replicator means is transferred to another of said passive replicator means for operation thereon.
Claim 19
Dependent Claim
30 words
The device recited in claim 5 wherein each of said plurality of switches is an active switch; said plurality of switches connected in series by a control signal conducting means.
Claim 20
Dependent Claim
40 words
The device recited in claim 1 wherein each of said domains produced by said generator means is substantially uniform; said propagation paths cause said domains to propagate therealong in a relatively uniform manner in response to a control magnetic field.
Claim 21
Dependent Claim
20 words
The device recited in claim 6 wherein said output decoder means is of similar configuration to said input decoder means.
Claim 22
Dependent Claim
30 words
The device recited in claim 4 wherein said pusher bar means is substantially as long as said column of chevrons such that the restricted domain is nearly circular in configuration.
Claim 23
Dependent Claim
29 words
The device recited in claim 8 including shifting means connected between said replicator means and said input decoder means to form a portion of an additional common propagation path.
Claim 24
Dependent Claim
79 words
The device recited in claim 1 wherein each of said input decoder means and said output decoder means includes at least two conductors disposed adjacent said magnetic sheet and crossing said propagation paths; each of said two conductors including at least one portion thereof adapted to apply a magnetic field to selectively annihilate domains in said magnetic sheet, in proximity to said one portion; said one portion in each of said two conductors disposed adjacent a different propagation path.
References Cited (Backward Citations)
US3890605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |