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US 12,353,845 B2Granted
Duffing oscillator reservoir computer
AssigneeRaytheon BBN Technologies Corp.
InventorsLuke Colin Gene Govia, William Daniel Kalfus, Guilhem Jean Ribeill, Graham Earle Rowlands, Hari Kiran Krovi, Thomas Akira Ohki
Life of this patent
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Abstract
A reservoir computer. In some embodiments, the reservoir computer includes a Duffing oscillator, and a readout circuit, and the readout circuit is configured to calculate a plurality of products, each of the products being calculated by multiplying a sample, of a plurality of samples of a signal from the Duffing oscillator, by a respective weight of a plurality of weights.
Claims14
A system, comprising:
- a Duffing oscillator, and
- a readout circuit,
- the readout circuit being configured to calculate a plurality of products, each of the products being calculated by multiplying a sample, of a plurality of samples of a signal from the Duffing oscillator, by a respective weight of a plurality of weights;
- the system further comprising an input circuit configured to receive an input signal, and to adjust the amplitude of the input signal, to an adjusted amplitude, to form an adjusted input signal,
- wherein a reflection coefficient of the Duffing oscillator is hysteretic as a function of frequency when measured with a signal having an amplitude equal to the adjusted amplitude.
2 more elements
A system, comprising:
- a Duffing oscillator, and
- a readout circuit,
- the readout circuit being configured to calculate a plurality of products, each of the products being calculated by multiplying a sample, of a plurality of samples of a signal from the Duffing oscillator, by a respective weight of a plurality of weights;
- wherein the system is configured to estimate one of:
- the phase of a sinusoidal input signal;
- the frequency of a sinusoidal input signal;
- and
- the amplitude of a sinusoidal input signal.
5 more elements
A method, comprising:
- operating a reservoir computer,
- wherein:
- the reservoir computer comprises:
- a Duffing oscillator;
- and
- a readout circuit;
- wherein the Duffing oscillator comprises a resonant circuit comprising a varactor or a resonant circuit comprising a superconducting quantum interference device (SQUID).
4 more elements
Dependencies are inferred from the claim text.