US3750106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable function magnetic domain arrangement
Assignee: AT&T Inc
•
Filing: 1971-08-02
•
Granted: 1973-07-31
•
Expires: 1991-08-02
Abstract
Abstract A magnetic domain variable function arrangement is realized by a magnetically soft overlay geometry which controls the movement of single wall domains in a slice of magnetic material in response to a reorienting magnetic field. The overlay geometry defines first and second input channels, an output channel and control channels connecting the input channels in synchronous relationship with each other and with the output channel such that coordinated domains propagated along the input channels in a first specifically timed relationship cause subsequently propagated input domains to provide output domains on the output channel only when the input domains are in an AND relationship with each other. The overlay geometry is arranged to provide output domains corresponding to an EXCLUSIVE OR relationship between input domains after a second timed relationship between input domains is detected. Other functions are also provided under control of other timed relationships.
Inventors
- 👤 L Caron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:55
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/16; H03K19/168; G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/0875; G11C19/0883
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
201 words
A geometry of elements adapted for controlling the directional movement of magnetic domains in a slice of magnetic material in response to a magnetic field reorienting in a plane of said slice, said elements defining a pair of input channels and an output channel, a plurality of control channels connecting said input channels to said output channel, a plurality of interaction points arranged along said control channels between said input channels and said output channel each adapted for determining a unique time relationship between certain domains propagated on said control channels, a functional relationship interaction point arranged along said control channels between said input channels and said output channel adapted for determining when coordinated ones of said domains moving along said control channels are in a first functional relationship with each other and for determining when said coordinated domains are in a second functional relationship with each other, and a first output interaction point controlled by said functional relationship interaction point and by said plurality of time relationship interaction points, said first output interaction point operative in conjunction with a determined first functional relationship and with a determined first time relationship for providing a domain for movement along said output channel.
Claim 2
Dependent Claim
201 words
A geometry of elements adapted for controlling the directional movement of magnetic domains in a slice of magnetic material in response to a magnetic field reorienting in a plane of said slice, said elements defining a pair of input channels and an output channel, a plurality of control channels connecting said input channels to said output channel, a plurality of interaction points arranged along said control channels between said input channels and said output channel each adapted for determining a unique time relationship between certain domains propagated on said control channels, a functional relationship interaction point arranged along said control channels between said input channels and said output channel adapted for determining when coordinated ones of said domains moving along said control channels are in a first functional relationship with each other and for determining when said coordinated domains are in a second functional relationship with each other, and a first output interaction point controlled by said functional relationship interaction point and by said plurality of time relationship interaction points, said first output interaction point operative in conjunction with a determined first functional relationship and with a determined first time relationship for providing a domain for movement along said output channel.
Claim 3
Dependent Claim
59 words
The invention set forth in claim 1 wherein said first output interaction point is further controlled by said functional relationship interaction point and by said plurality of time relationship interaction points and operatIve in conjunction with a determined first functional relationship and with a determined time relationship other than said first time realtionship for inhibiting said output channel domain.
Claim 4
Dependent Claim
21 words
The invention set forth in claim 2 wherein said first functional relationship is the AND relationship between coordinated input channel domains.
Claim 5
Dependent Claim
64 words
The invention set forth in claim 1 wherein said elements further define a second output interaction point controlled by said functional relationshiP interaction point and by said plurality of time relationship interaction points, said second output interaction point operative in conjunction with a determined second functional relationship and with a determined second time realtionship for providing a domain for movement along said output channel.
Claim 6
Dependent Claim
59 words
The invention set forth in claim 4 wherein said second output interaction point is controlled by said functional relationship interaction point and by said plurality of time relationship interaction points and further operative in conjunction with a determined second functional relationship and with a determined time relationship other than said second time relationship for inhibiting said output channel domain.
Claim 7
Dependent Claim
21 words
The invention set forth in claim 5 wherein said second functional relationship is the XOR relationship between coordinated input channel domains.
Claim 8
Dependent Claim
60 words
The invention set forth in claim 1 wherein said elements further define an inverting interaction point controlled by said functional relationship interaction point and by said plurality of time relationship interaction points, said inverting output interaction point operative in response to a determined third time relationship for functionally inverting domains representative of domains moving in one of said input channels.
Claim 9
Dependent Claim
78 words
The invention set forth in claim 1 wherein said elements further define an idler controlled by said time relationship interaction point and arranged in conjunction with said first output interaction point for maintaining said first interaction point in a determined first time relationship without regard to time relationships other than said first time relationship between coordinated domains moving along said input channels subsequent to said movement along said input channels of coordinated domains in said first time relationship.
Claim 10
Dependent Claim
33 words
The invention set forth in claim 8 wherein said idler is further arranged for releasing said first output interaction point from a maintained first time relationship upon a subsequently determined first time relationship.
Claim 11
Dependent Claim
131 words
The invention set forth in claim 9 wherein said elements further define a second output interaction point controlled by said functional relationship interaction point and by said plurality of time relationship interaction points, said second output interaction point operative in conjunction with a predetermined second functional relationship and with a determined second time relationship for providing a domain for movement along said output channel, and an idler controlled by said time relationship interaction point and arranged in conjunction with said second output interaction point for maintaining said second interaction point in a determined second time relationship without regard to time relationships other than said second time realtionship between coordinated domains moving along said input channels subsequent to said movement along said input channels of coordinated domains in said second time relationship.
Claim 12
Dependent Claim
40 words
The invention set forth in claim 10 wherein said first output interaction point is operative to provide the AND function between coordinated inputs and wherein said second output interaction point is operative to provide the XOR function between coordinated inputs.
Claim 13
Dependent Claim
155 words
A variable function gate comprising a slice of magnetic material in which single wall magnetic domains can be propagated and a pattern of elements for controlling the directional movement of said domains in said magnetic material, said elements defining first and second input channels along which domains may be propagated, an output channel for propagating a domain in response to a first functional relationship between coordinated domains propagated concurrently along both of said input channels and for propagating a domain in response to a second functional relationship between coordinated domains propagated exclusively along either of said input channels, and control channels connecting said Input channels to said output channel, said control channels operative in response to a first time relationship between coordinated domains propagated along said input channels for enabling said first function and operative in response to a second time relationship between coodinated domains propagated along said input channels for enabling said second function.
Claim 14
Dependent Claim
155 words
A variable function gate comprising a slice of magnetic material in which single wall magnetic domains can be propagated and a pattern of elements for controlling the directional movement of said domains in said magnetic material, said elements defining first and second input channels along which domains may be propagated, an output channel for propagating a domain in response to a first functional relationship between coordinated domains propagated concurrently along both of said input channels and for propagating a domain in response to a second functional relationship between coordinated domains propagated exclusively along either of said input channels, and control channels connecting said Input channels to said output channel, said control channels operative in response to a first time relationship between coordinated domains propagated along said input channels for enabling said first function and operative in response to a second time relationship between coodinated domains propagated along said input channels for enabling said second function.
Claim 15
Dependent Claim
59 words
The invention set forth in claim 12 wherein said control channels are operative in response to said first time relationship for supplying a first control domain to said output channel for controlling said first function and operative in response to said second time relationship for supplying a second control domain to said output channel for controlling said second function.
Claim 16
Dependent Claim
37 words
The invention set forth in claim 13 wherein said output channel is arranged to maintain any said supplied domain in proximity thereto so that said output channel continues to provide the function associated with said supplied domain.
Claim 17
Dependent Claim
51 words
The invention set forth in claim 14 wherein said output channel is further arranged to remove a first supplied first control domain upon a second supplied first control domain being supplied thereto and to remove a first supplied second control domain upon a second supplied second control domain being supplied thereto.
Claim 18
Dependent Claim
38 words
The invention set forth in claim 15 wherein said output channel is further arranged to prevent a second supplied first control domain and a second supplied second control domain from being maintained in proximity to said output channel.
Claim 19
Dependent Claim
69 words
The invention set forth in claim 13 wherein said elements further define a plurality of interaction points between said input channels and said output channel for compariing the presence of a domain in one of said input channels with the presence of a coordinated domain in the other of said input channels, the coincidence between said compared domains being operative for supplying said control domains to said output channel.
Claim 20
Dependent Claim
102 words
An arrangement for selectively providing outputs in response to various functional realtionships between input signals comprising a plurality of input channels, an output channel, means for moving data bits representative of said input signals in a coordinated manner along said input channels, means for detecting the time differential between coordinated domains in certain of said input channels, means for detecting the functional relationships between coordinated domains in certain of said input channels, and means operable in response to a detected first time differential for controlling domain propagation along said output channel as an indication of a first one of said functional relationships.
Claim 21
Dependent Claim
102 words
An arrangement for selectively providing outputs in response to various functional realtionships between input signals comprising a plurality of input channels, an output channel, means for moving data bits representative of said input signals in a coordinated manner along said input channels, means for detecting the time differential between coordinated domains in certain of said input channels, means for detecting the functional relationships between coordinated domains in certain of said input channels, and means operable in response to a detected first time differential for controlling domain propagation along said output channel as an indication of a first one of said functional relationships.
Claim 22
Dependent Claim
38 words
The invention set forth in claim 18 further comprising means operable in response to a detected second time differential for controlling domain propagation along said output channel as an indication of a second one of said functional relationships.
Claim 23
Dependent Claim
75 words
The invention set forth in claim 19 further comprising means for inverting data bits propagated along a first one of said input channels, and means operable in response to a detected third time differential for controlling in conjunction with either said detected first or said detected second time relationship domain propagation along said output channel as an indication of one of said functional relationships with respect to the inverse of said input channel data bit.
Claim 24
Dependent Claim
70 words
The invention set forth in claim 19 wherein said functional relationship detecting means includes means for circulating domains representative of said first functional relationship to said output channel over a first path and for circulating domains representative of said second functional relationship to said output channel over a second path, and means in each of said first and second paths for inhibiting the circulating of domains to said output channel.
Claim 25
Dependent Claim
113 words
The invention set forth in claim 21 wherein said time differential detectiNg means includes a plurality of interaction points for determined the coincidence of domains propagated thereto on a pair of domain propagation channels, a plurality of domain propagation channels each for circulating to certain of said interaction points data bits representative of said input signal data bits on each of said input channels, and means for adjusting the effective length of each channel of a pair of channels at one of said interaction points such that coincidence occurs at said interaction point whenever a domain circulates through one input channel a fixed time before a coordinated domain circulates through another input channel.
Claim 26
Dependent Claim
55 words
The invention set forth in claim 22 further comprising means for circulating a domain representative of each said determined coincidence from one of said interaction points to a particular one of said first and second path inhibiting means for controlling the propagation into said output channel of any domain propagated along said particular one path.
Claim 27
Dependent Claim
46 words
The invention set forth in claim 23 wherein each inhibiting means includes means for maintaining thereat a domain circulated thereto from one of said interaction points such that domains propagated along said path associated with said inhibiting means continue to be propagated into said output channel.
Claim 28
Dependent Claim
35 words
The invention set forth in claim 24 wherein each said inhibiting means further includes means for causing said maintaining domain to be circulated therefrom whenever another domain is circulated thereto from an associated interaction point.
Claim 29
Dependent Claim
119 words
In combination with a slice of magnetic material for moving magnetic domains therein in response to a magnetic field reorienting in a plane of a slice, an arrangement for selectively providing outputs representing various functional relationships between inputs comprising a pair of input channels, an output channel, at least one control interaction point connected to said output channel and responsive to domains appearing at said input channel, and means for determining the functional relationship detected by said control interaction point dependent upon the time relationship between domains in said pair of input channels, said means including a plurality of domain propagation paths and a plurality of additional interaction points connecting said input and output channels to said propagation paths.
Claim 30
Dependent Claim
119 words
In combination with a slice of magnetic material for moving magnetic domains therein in response to a magnetic field reorienting in a plane of a slice, an arrangement for selectively providing outputs representing various functional relationships between inputs comprising a pair of input channels, an output channel, at least one control interaction point connected to said output channel and responsive to domains appearing at said input channel, and means for determining the functional relationship detected by said control interaction point dependent upon the time relationship between domains in said pair of input channels, said means including a plurality of domain propagation paths and a plurality of additional interaction points connecting said input and output channels to said propagation paths.
Claim 31
Dependent Claim
25 words
The arrangement of claim 26 wherein certain of said domain propagation paths are effectively of different lengths dependent upon the functional relationship to be detected.
References Cited (Backward Citations)
US3460116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |