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Neural network structure having lateral interconnections
Assignee: Hitachi Ltd
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Filing: 1994-03-10
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Granted: 1996-12-03
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Expires: 2014-03-10
Abstract
Abstract A neural network layer (1) is made up of nodes or neurons which each comprise a pair of physically separate and optically coupled sub-units (X 1 , Y 1 ). One sub-unit broadcasts excitatory and receives inhibitory signals, whereas the other sub-unit broadcasts inhibitory and receives the excitatory signals. An electrical feedback connection (20) is provided between corresponding sub-units for determination of net node activation. Diffractive or holographic optical elements (2) are used for optical coupling.
Inventors
- 👤 Paul Horan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:38
CPC Classifications
G; G06; G06N; G06N3/00; G06N3/02; G06N3/06; G06N3/067; G06N3/0675
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
104 words
A lateral neural network structure comprising: a layer having a plurality of neurons, each of said plurality of neurons having at least two physically separate optical sub-units, one constructed for broadcasting lateral inhibitory signals and one constructed for broadcasting lateral excitatory signals; and means for optically coupling said sub-units in a bi-directional manner for broadcasting both inhibitory and excitatory lateral signals; wherein sub-units constructed for broadcasting lateral inhibitory signals are located for reception of lateral excitatory signals and reception of external inhibitory inputs; and sub-units constructed for broadcasting lateral excitatory are located for reception of lateral inhibitory signals and reception of external excitatory inputs.
Claim 2
Dependent Claim
104 words
A lateral neural network structure comprising: a layer having a plurality of neurons, each of said plurality of neurons having at least two physically separate optical sub-units, one constructed for broadcasting lateral inhibitory signals and one constructed for broadcasting lateral excitatory signals; and means for optically coupling said sub-units in a bi-directional manner for broadcasting both inhibitory and excitatory lateral signals; wherein sub-units constructed for broadcasting lateral inhibitory signals are located for reception of lateral excitatory signals and reception of external inhibitory inputs; and sub-units constructed for broadcasting lateral excitatory are located for reception of lateral inhibitory signals and reception of external excitatory inputs.
Claim 3
Dependent Claim
20 words
A neural network structure as claimed in claim 1, wherein the network structure layer comprises a feedback connection between sub-units.
Claim 4
Dependent Claim
23 words
A neural network structure as claimed in claim 2, wherein the feedback connection is a one-to-one connection between sub-units of a single neuron.
Claim 5
Dependent Claim
16 words
A neural network structure as claimed in claim 3, wherein the sub-units comprise on-chip light sources.
Claim 6
Dependent Claim
29 words
A neural network structure as claimed in claim 3, wherein the sub-units are constructed to receive light from an external source and comprise on-chip modulators for the received light.
Claim 7
Dependent Claim
16 words
A neural network structure as claimed in claim 2, wherein the sub-units comprise on-chip light sources.
Claim 8
Dependent Claim
29 words
A neural network structure as claimed in claim 2, wherein the sub-units are constructed to receive light from an external source and comprise on-chip modulators for the received light.
Claim 9
Dependent Claim
20 words
A neural network structure as claimed in claim 7, wherein the on-chip modulators are of the GaAs asymmetric Fabry-Perot type.
Claim 10
Dependent Claim
15 words
A neural network structure as claimed in claim 7, wherein the external source is modulated.
Claim 11
Dependent Claim
29 words
A neural network structure as claimed in claim 1, wherein the sub-units are constructed to receive light from an external source and comprise on-chip modulators for the received light.
Claim 12
Dependent Claim
20 words
A neural network structure as claimed in claim 10, wherein the on-chip modulators are of the GaAs asymmetric Fabry-Perot type.
Claim 13
Dependent Claim
15 words
A neural network structure as claimed in claim 10, wherein the external source is modulated.
Claim 14
Dependent Claim
18 words
A neural network structure as claimed in claim 11, wherein the optical coupling means is variable with time.
Claim 15
Dependent Claim
20 words
A neural network structure as claimed in claim 1, wherein the optical coupling means comprises holographic or diffractive optical elements.
Claim 16
Dependent Claim
19 words
A neural network structure as claimed in claim 14, wherein the optical coupling means comprises a computer-generated holographic pattern.
Claim 17
Dependent Claim
18 words
A neural network structure as claimed in claim 14, wherein the optical coupling means is variable with time.
Claim 18
Dependent Claim
18 words
A neural network structure as claimed in claim 1, wherein the optical coupling means is variable with time.
Claim 19
Dependent Claim
14 words
An image processing system incorporating a neural network structure as claimed in claim 1.
Claim 20
Dependent Claim
13 words
A self-organising network incorporating a neural network structure as claimed in claim 1.
Claim 21
Dependent Claim
20 words
A neural network structure as claimed in claim 1, wherein the network structure layer comprises a feedback connection between sub-units.
Claim 22
Dependent Claim
23 words
A neural network structure as claimed in claim 20, wherein the feedback connection is a one-to-one connection between sub-units of a single neuron.
Claim 23
Dependent Claim
16 words
A neural network structure as claimed in claim 21, wherein the sub-units comprise on-chip light sources.
Claim 24
Dependent Claim
29 words
A neural network structure as claimed in claim 21, wherein the sub-units are constructed to receive light from an external source and comprise on-chip modulators for the received light.
Claim 25
Dependent Claim
20 words
A neural network structure as claimed in claim 21, wherein the optical coupling means comprises holographic or diffractive optical elements.
Claim 26
Dependent Claim
18 words
A neural network structure as claimed in claim 21, wherein the optical coupling means is variable with time.
Claim 27
Dependent Claim
16 words
A neural network structure as claimed in claim 20, wherein the sub-units comprise on-chip light sources.
Claim 28
Dependent Claim
29 words
A neural network structure as claimed in claim 20, wherein the sub-units are constructed to receive light from an external source and comprise on-chip modulators for the received light.
Claim 29
Dependent Claim
20 words
A neural network structure as claimed in claim 27, wherein the on-chip modulators are of the GaAs asymmetric Fabry-Perot type.
Claim 30
Dependent Claim
15 words
A neural network structure as claimed in claim 27, wherein the external source is modulated.
Claim 31
Dependent Claim
20 words
A neural network structure as claimed in claim 20, wherein the optical coupling means comprises holographic or diffractive optical elements.
Claim 32
Dependent Claim
18 words
A neural network structure as claimed in claim 20, wherein the optical coupling means is variable with time.
Claim 33
Dependent Claim
16 words
A neural network structure as claimed in claim 1, wherein the sub-units comprise on-chip light sources.
Claim 34
Dependent Claim
16 words
A neural network structure as claimed in claim 1, wherein the sub-units comprise on-chip light sources.
Claim 35
Dependent Claim
20 words
A neural network structure as claimed in claim 33, wherein the optical coupling means comprises holographic or diffractive optical elements.
Claim 36
Dependent Claim
18 words
A neural network structure as claimed in claim 33, wherein the optical coupling means is variable with time.
Claim 37
Dependent Claim
29 words
A neural network structure as claimed in claim 1, wherein the sub-units are constructed to receive light from an external source and comprise on-chip modulators for the received light.
Claim 38
Dependent Claim
20 words
A neural network structure as claimed in claim 36, wherein the on-chip modulators are of the GaAs asymmetric Fabry-Perot type.
Claim 39
Dependent Claim
20 words
A neural network structure as claimed in claim 37, wherein the optical coupling means comprises holographic or diffractive optical elements.
Claim 40
Dependent Claim
15 words
A neural network structure as claimed in claim 36, wherein the external source is modulated.
Claim 41
Dependent Claim
20 words
A neural network structure as claimed in claim 39, wherein the optical coupling means comprises holographic or diffractive optical elements.
Claim 42
Dependent Claim
18 words
A neural network structure as claimed in claim 39, wherein the optical coupling means is variable with time.
Claim 43
Dependent Claim
20 words
A neural network structure as claimed in claim 36, wherein the optical coupling means comprises holographic or diffractive optical elements.
Claim 44
Dependent Claim
18 words
A neural network structure as claimed in claim 1, wherein the optical coupling means is variable with time.
Claim 45
Dependent Claim
18 words
A neural network structure as claimed in claim 36, wherein the optical coupling means is variable with time.
References Cited (Backward Citations)
US4893255A
Cited
EP0349007A2
Cited
US5004309A
Cited
US5109425A
Cited
US5033103A
Cited
US5151969A
Cited
US5235440A
Cited
US5121231A
Cited
US5129041A
Cited
US5206541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-12-03 | 2000-06-03 | 2000-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-03 | 2004-06-03 | 2004-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-03 | 2008-06-03 | 2008-12-03 | $7700.00 | Window Closed / Lapsed |