US3885233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bubble detection systems and multipliers used therein
Assignee: Monsanto Co
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Filing: 1974-03-08
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Granted: 1975-05-20
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Expires: 1994-03-08
Abstract
Abstract In a bubble detection system, the reliability of the bubble detection is improved by multiplying each data bubble to be readout into a multiplicity of simultaneous bubbles which are detected by a bubble detector. In one embodiment, the bubble multiplier comprises bubble splitters connected into a tree. In other embodiments, logical bubble splitters are connected into trees. The logical bubble splitters, employing bubble generators to achieve bubble replication, produce bubbles in response to absences of input bubbles as well as presences and the bubbles produced in response to absences are also multiplied so that a multiplicity of bubbles is produced in response to each presence of a data bubble and in response to each absence of a data bubble. Bubble detectors respond to the bubbles representing presences of data bubbles as well as absences of data bubbles to provide a highly reliable indication of the presence or absence of a data bubble.
Inventors
- 👤 Robert C Minnick
- 👤 Paul T Bailey
- 👤 Robert M Sandfort
- 👤 Warren L Semon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:40
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/0866; H; H03; H03K; H03K19/00; H03K19/02; H03K19/16; H03K19/168
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
117 words
A magnetic bubble readout system comprising a field accessed input channel for receiving and transmitting magnetic data bubbles, a bubble multiplier connected to receive magnetic bubbles transmitted through said input channel and producing a plurality of simultaneous magnetic bubbles on different field accessed output bubble channels in responses to each data bubble received on said input channel, and bubble detection means connected to receive bubbles transmitted through said output channels and responsive to the bubbles received simultaneously through each of said output channels to generate a signal indication representing the presence or absence of each data bubble on said input channel and having a signal level dependent on the number of bubbles detected on said output channels.
Claim 2
Dependent Claim
117 words
A magnetic bubble readout system comprising a field accessed input channel for receiving and transmitting magnetic data bubbles, a bubble multiplier connected to receive magnetic bubbles transmitted through said input channel and producing a plurality of simultaneous magnetic bubbles on different field accessed output bubble channels in responses to each data bubble received on said input channel, and bubble detection means connected to receive bubbles transmitted through said output channels and responsive to the bubbles received simultaneously through each of said output channels to generate a signal indication representing the presence or absence of each data bubble on said input channel and having a signal level dependent on the number of bubbles detected on said output channels.
Claim 3
Dependent Claim
99 words
A magnetic bubble readout system as recited in claim 1, wherein said bubble multiplier comprises a plurality of bubble splitting means each operable to separate each input bubble into two simultaneous output bubbles on different output channels, said bubble splitting means being connected into a tree of a plurality of levels wherein the outputs of each bubble splitter in each preceding level feeds inputs of different bubble splitters in succeeding levels of said tree, said bubble detection means being responsive to the bubbles on each of the outputs of the bubble splitters in the last level of said tree.
Claim 4
Dependent Claim
237 words
A magnetic bubble readout system comprising an input channel for receiving magnetic data bubbles, a bubble multiplier connected to receive magnetic bubbles on said input channel and producing a plurality of simultaneous magnetic bubbles on different output bubble channels in response to each data bubble received on said input channel, and bubble detection means responsive to the bubbles produced simultaneously on each of said output channels to generate a signal indication representing the presence or absence of each data bubble on said input channel, said bubble multiplier comprising A logical splitter having an input and at least three outputs, a bubble channel connecting said input to a first one of said outputs to transmit each bubble received by such splitter to said first one of said outputs, a bubble generator producing an output bubble for each bubble position on said bubble channel of said splitter, and logic means responsive to bubbles on said bubble channel of said splitter to transmit each bubble generated by said generator to a second one of said outputs in response to a simultaneous bubble on said bubble channel of said splitter and to transmit each bubble generated by said bubble generator to a third of said outputs in response to each absence of a bubble on said bubble channel of said splitter; said bubble detection means being responsive to the bubbles on each of said three outputs to generate said signal indication.
Claim 5
Dependent Claim
237 words
A magnetic bubble readout system comprising an input channel for receiving magnetic data bubbles, a bubble multiplier connected to receive magnetic bubbles on said input channel and producing a plurality of simultaneous magnetic bubbles on different output bubble channels in response to each data bubble received on said input channel, and bubble detection means responsive to the bubbles produced simultaneously on each of said output channels to generate a signal indication representing the presence or absence of each data bubble on said input channel, said bubble multiplier comprising A logical splitter having an input and at least three outputs, a bubble channel connecting said input to a first one of said outputs to transmit each bubble received by such splitter to said first one of said outputs, a bubble generator producing an output bubble for each bubble position on said bubble channel of said splitter, and logic means responsive to bubbles on said bubble channel of said splitter to transmit each bubble generated by said generator to a second one of said outputs in response to a simultaneous bubble on said bubble channel of said splitter and to transmit each bubble generated by said bubble generator to a third of said outputs in response to each absence of a bubble on said bubble channel of said splitter; said bubble detection means being responsive to the bubbles on each of said three outputs to generate said signal indication.
Claim 6
Dependent Claim
86 words
A bubble detection system as recited in claim 3, wherein said logic means comprises a second bubble channel leading to said second one of said outputs and a third bubble channel connecting said bubble generator to said third one of said outputs between said first mentioned bubble channel of said bubble splitter and said second channel, and bridging means for transmitting a bubble from said third channel to said second channel only when repelled by a simultaneous bubble in said first mentioned channel of said splitter.
Claim 7
Dependent Claim
83 words
A magnetic bubble readout system as recited in claim 3, wherein said bubble multiplier comprises a plurality of logical splitters each as recited in claim 3 connected into a tree having a plurality of levels wherein the outputs of the logical splitters in each preceeding level feed inputs of different logical splitters in succeeding levels of said tree, said bubble detection means being responsive to the bubbles on each of the outputs of the logical splitters of the last level of said tree.
Claim 8
Dependent Claim
132 words
A magnetic bubble readout system as recited in claim 3, wherein said logical splitter each has five outputs, a second bubble generator producing an output bubble for each bubble position on said bubble channel of said splitter and second logic means responsive to bubbles on said bubble channel of said splitter to transmit each bubble generated by said second generator to a fourth one of said outputs in response to a simultaneous bubble on said bubble channel of said splitter and to transmit each bubble generated by said second generator to a fifth one of said outputs in response to each absence of a bubble on said bubble channel of said splitter; said bubble detection means being responsive to the bubbles on each of said five outputs to generate said signal indication.
Claim 9
Dependent Claim
179 words
A magnetic bubble readout system as recited in claim 6, wherein said first mentioned logic means comprises a second bubble channel connected to said second one of said outputs, a third bubble channel connecting the output of said first mentioned bubble generator to said third one of said outputs between said second channel and said first mentioned channel of said splitter and bridging circuit means between said second and third channels for transmitting a bubble from said third channel to said second channel only when repelled by a simultaneous bubble on said first mentioned channel of said splitter; and said second logic means comprises a fourth channel connected to said fourth one of said outputs, a fifth channel connected from said second generator to said fifth one of said outputs between said fourth channel and said first mentioned channel of said splitter and bridging circuit means between said fourth and fifth channels for transmitting a bubble from said fifth channel to said fourth channel only when repelled by a simultaneous bubble on said first mentioned channel of said splitter.
Claim 10
Dependent Claim
91 words
A magnetic bubble readout system as recited in claim 6, wherein said bubble multiplier comprises a plurality of logical splitters as recited in claim 6, said logical splitters being connected into a tree of a plurality of levels wherein thE outputs of each bubble splitter in each preceeding level feeds intputs of different bubble splitters in succeeding levels of said tree, said bubble detection means being repsonsive to the bubbles on each of the outputs of the logical splitters in the last level of said tree to generate said signal indication.
Claim 11
Dependent Claim
185 words
A magnetic bubble readout system comprising an input channel for receiving magnetic data bubbles, a bubble multiplier connected to be responsive to magnetic bubbles on said input channel and producing a plurality of simultaneous magnetic bubbles on a first set of different outputs in response to each data bubble received in said input channel and to produce a plurality of simultaneous bubbles on a second set of different outputs in response to each absence of a data bubble received on said input channel, and bubble detection means responsive to bubbles produced simultaneously on each of the outputs of said first set to generate a first signal indication representing the presence of each data bubble on said input channel and having a signal level dependent on the number of bubbles produced on said first set of outputs and responsive to the bubbles produced simultaneously on the outputs of said second set to generate a second signal indication representing each absence of a data bubble on said input channel and having a signal level dependent on the number of bubbles produced on said second set of outputs.
Claim 12
Dependent Claim
185 words
A magnetic bubble readout system comprising an input channel for receiving magnetic data bubbles, a bubble multiplier connected to be responsive to magnetic bubbles on said input channel and producing a plurality of simultaneous magnetic bubbles on a first set of different outputs in response to each data bubble received in said input channel and to produce a plurality of simultaneous bubbles on a second set of different outputs in response to each absence of a data bubble received on said input channel, and bubble detection means responsive to bubbles produced simultaneously on each of the outputs of said first set to generate a first signal indication representing the presence of each data bubble on said input channel and having a signal level dependent on the number of bubbles produced on said first set of outputs and responsive to the bubbles produced simultaneously on the outputs of said second set to generate a second signal indication representing each absence of a data bubble on said input channel and having a signal level dependent on the number of bubbles produced on said second set of outputs.
Claim 13
Dependent Claim
128 words
A bubble multiplier comprising means defining at least three bubble channels for transmitting magnetic bubbles comprising first, second and third adjacent tracks of magnetic circuit elements, said third track being adapted to receive presences and absences of bubbles representing a binary variable, a bubble generator connected to supply magnetic bubbles to the said second track simultaneous with and at the same rate said binary variables are applied to said third track, a briding pattern of circuit elements connected between said second track and said first track adapted to transmit magnetic bubbles from said second track to said first track only if repelled by a simultaneous bubble in said third track, said third track being sufficiently close to said second track to repel simultaneous bubbles occurring in second track.
Claim 14
Dependent Claim
128 words
A bubble multiplier comprising means defining at least three bubble channels for transmitting magnetic bubbles comprising first, second and third adjacent tracks of magnetic circuit elements, said third track being adapted to receive presences and absences of bubbles representing a binary variable, a bubble generator connected to supply magnetic bubbles to the said second track simultaneous with and at the same rate said binary variables are applied to said third track, a briding pattern of circuit elements connected between said second track and said first track adapted to transmit magnetic bubbles from said second track to said first track only if repelled by a simultaneous bubble in said third track, said third track being sufficiently close to said second track to repel simultaneous bubbles occurring in second track.
Claim 15
Dependent Claim
124 words
A bubble multiplier as recited in claim 10, wherein said bubble channel defining means defines at least five bubble channels comprising additional fourth and fifth tracks of magnetic circuit elements adjacent to said first, second and third adjacent tracks, a bubble generator connected to supply magnetic bubbles to said fourth track simultaneously with and at the same rate binary variables are applied to said third track, a bridging pattern of circuit elements connected between said fourth track and said fifth track adapted to transmit magnetic bubbles from said fourth track to said fifth track only if repelled by a simultaneous bubble in said third track, said third track being sufficiently close to said fourth track to repel simultaneous bubbles occurring in said fourth track.
References Cited (Backward Citations)
US3713118A
Cited
US3798607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |