US5355435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asynchronous temporal neural processing element
Assignee: Arrowhead Center Inc
•
Filing: 1992-05-18
•
Granted: 1994-10-11
•
Expires: 2012-05-18
Abstract
Abstract An asynchronous temporal neural processing element. The processing element is useful in solving problems from the class of temporal signal processing problems and is modeled closely on the sub-cellular biology and electrophysiology of neurons having chemical synapses.
Inventors
- 👤 Mark R. DeYong
- 👤 Randall L. Findley
- 👤 Thomas C. Eskridge
- 👤 Christopher A. Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:47
CPC Classifications
G; G06; G06N; G06N3/00; G06N3/02; G06N3/04; G06N3/049; G06N3/06; G06N3/063; G06N3/065; G06N3/067; G06N3/0675; H; H03; H03H; H03H17/00; H03H17/02; H03H17/0223; H03H2222/00; H03H2222/04
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
116 words
A neural network processing element, a plurality of which comprise a neural network, said processing element comprising: means for simulating one or more chemical synapses; means for simulating a neuron soma; means for simulating one or more dendrites operably connecting said means for simulating one or more chemical synapses to said means for simulating a neuron soma; means for simulating an axon; means for simulating an axon hillock operably connecting said means for simulating a neuron soma to said means for simulating an axon: means for receiving asynchronous signals and providing said signals to said means for simulating one or more chemical synapses; and means for sending asynchronous signals from said means for simulating an axon.
Claim 2
Dependent Claim
116 words
A neural network processing element, a plurality of which comprise a neural network, said processing element comprising: means for simulating one or more chemical synapses; means for simulating a neuron soma; means for simulating one or more dendrites operably connecting said means for simulating one or more chemical synapses to said means for simulating a neuron soma; means for simulating an axon; means for simulating an axon hillock operably connecting said means for simulating a neuron soma to said means for simulating an axon: means for receiving asynchronous signals and providing said signals to said means for simulating one or more chemical synapses; and means for sending asynchronous signals from said means for simulating an axon.
Claim 3
Dependent Claim
37 words
The invention of claim 1 wherein said means for simulating one or more chemical synapses comprises means for simulating one or more chemical synapses selected from the group consisting of excitatory synapses, inhibitory synapses, and shunting synapses.
Claim 4
Dependent Claim
24 words
The invention of claim 1 wherein said means for simulating one or more chemical synapses comprises means for simulating one or more presynaptic regions.
Claim 5
Dependent Claim
25 words
The invention of claim 1 wherein said means for simulating one or more chemical synapses comprises means for simulating one or more post synaptic regions.
Claim 6
Dependent Claim
46 words
The invention of claim 1 additionally comprising bias adaptation network means for dynamically controlling an operational parameter of said means for simulating an axon hillock, said operational parameter selected from the group consisting of a threshold/delay level, an action potential pulsewidth level, and a refractory period.
Claim 7
Dependent Claim
44 words
The invention of claim 1 additionally comprising bias adaptation network means for dynamically controlling an operational parameter of said means for simulating a chemical synapse, said operational parameter selected from the group consisting of a current amplitude, a current duration, and a delay period.
Claim 8
Dependent Claim
18 words
The invention of claim 1 wherein said means for sending signals comprises means for sending asynchronous pulsed signals.
Claim 9
Dependent Claim
27 words
The invention of claim 7 wherein said means for sending asynchronous pulsed signals comprises means for varying threshold/delay, pulsewidth, and refractory period of said asynchronous pulsed signals.
Claim 10
Dependent Claim
21 words
The invention of claim 1 additionally comprising asynchronous reset means for returning said processing element to a set of initial conditions.
Claim 11
Independent Claim
82 words
A method of processing signals asynchronously comprising the steps of: a) receiving one or more asynchronous action potential signals; b) providing the action potential signals to one or more chemical synapse simulation means; c) modifying the amount of energy stored in a neuron soma simulation means according to the action potential signals provided in step b); and d) sending an asynchronous action potential signal from axon hillock simulation means according to the amount of energy stored in the neuron soma simulation means.
Claim 12
Independent Claim
82 words
A method of processing signals asynchronously comprising the steps of: a) receiving one or more asynchronous action potential signals; b) providing the action potential signals to one or more chemical synapse simulation means; c) modifying the amount of energy stored in a neuron soma simulation means according to the action potential signals provided in step b); and d) sending an asynchronous action potential signal from axon hillock simulation means according to the amount of energy stored in the neuron soma simulation means.
Claim 13
Independent Claim
82 words
A method of processing asynchronous signals, the method comprising the steps of: (a) simulating one or more chemical synapses; (b) simulating a neuron soma; (c) simulating one or more dendrites operably connecting the simulated chemical synapses to the simulated neuron soma; (d) simulating an axon; (e) simulating an axon hillock operably connecting the simulated neuron soma to the simulated axon; (f) receiving asynchronous signals and providing the signals to the simulated chemical synapses; and (g) sending asynchronous signals from the simulated axon.
Claim 14
Independent Claim
82 words
A method of processing asynchronous signals, the method comprising the steps of: (a) simulating one or more chemical synapses; (b) simulating a neuron soma; (c) simulating one or more dendrites operably connecting the simulated chemical synapses to the simulated neuron soma; (d) simulating an axon; (e) simulating an axon hillock operably connecting the simulated neuron soma to the simulated axon; (f) receiving asynchronous signals and providing the signals to the simulated chemical synapses; and (g) sending asynchronous signals from the simulated axon.
Claim 15
Dependent Claim
38 words
The method of claim 11 wherein the step of simulating one or more chemical synapses comprises the step of simulating one or more chemical synapses selected from the group consisting of excitatory synapses, inhibitory synapses, and shunting synapses.
Claim 16
Dependent Claim
25 words
The method of claim 11 wherein the step of simulating one or more chemical synapses comprises the step of simulating one or more presynaptic regions.
Claim 17
Dependent Claim
26 words
The method of claim 11 wherein the step of simulating one or more chemical synapses comprises the step of simulating one or more post synaptic regions.
Claim 18
Dependent Claim
47 words
The method of claim 11 additionally comprising the step of providing a bias adaption network for dynamically controlling an operational parameter of the simulated axon hillock, the operational parameter selected from the group consisting of a threshold/delay level, an action potential pulsewidth level, and a refractory period.
Claim 19
Dependent Claim
45 words
The method of claim 11 additionally comprising the step of providing a bias adaption network for dynamically controlling an operational parameter of the simulated chemical synapses, the operational parameter selected from the group consisting of a current amplitude, a current duration, and a delay period.
Claim 20
Dependent Claim
20 words
The method of claim 11 wherein the step of sending asynchronous signals comprises the step of sending asynchronous pulsed signals.
Claim 21
Dependent Claim
29 words
The method of claim 17 wherein the step of sending asynchronous pulsed signals comprises the step of varying threshold/delay, pulsewidth, and the refractory period of the asynchronous pulsed signals.
Claim 22
Dependent Claim
20 words
The method of claim 11 additionally comprising the step of returning to a set of initial conditions by asynchronous reset.
References Cited (Backward Citations)
US4660166A
Cited
US4943931A
Cited
US5004932A
Cited
US5214745A
Cited
US5172204A
Cited
US5255348A
Cited
US5155377A
Cited
US5237210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-10 | 1998-04-11 | 1998-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-10 | 2002-04-11 | 2002-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-10 | 2006-04-11 | 2006-10-11 | $7700.00 | Window Closed / Lapsed |