Spike train generating circuit
AssigneeHewlett Packard Enterprise Development LP
InventorSuhas Kumar
Life of this patent
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Abstract
An oscillator circuit that includes a voltage source, a resistor, a capacitor, and a nonlinear device. The capacitor and the nonlinear device may be coupled in parallel with one another. The resistor may be coupled in series with the capacitor and the nonlinear device. The voltage source may be coupled in series with the resistor. The voltage source may supply the oscillator circuit with a direct current input signal. The nonlinear device may include an active layer coupled to a first electrode and a second electrode. In response to the direct current input signal, the oscillator circuit may output a spike train including a spike bunch.
Claims20
An oscillator circuit comprising:
- a voltage source to supply the oscillator circuit with a direct current input signal;
- a resistor coupled in series with the voltage source;
- a capacitor coupled in series with the resistor and the voltage source;
- and
- a nonlinear device coupled in parallel with the capacitor, wherein the nonlinear device includes an active layer coupled to a first electrode and a second electrode, and wherein, in response to the direct current input signal, the oscillator circuit outputs a spike train including a spike bunch.
A method comprising:
- applying a direct current voltage to a circuit such that a voltage across a capacitor increases;
- configuring a nonlinear device of the circuit in a first state in which current is substantially prevented from flowing through the nonlinear device;
- upon the nonlinear device being configured in the first state and the voltage across the capacitor exceeding a first threshold voltage, configuring the nonlinear device in a second state in which the current flows through the nonlinear device;
- upon the nonlinear device being configured in the second state and the voltage across the capacitor reducing below a second threshold voltage, configuring the nonlinear device in the first state, wherein the current is substantially prevented from flowing through the nonlinear device;
- and
- generating, at an output of the circuit and based in part on the current flowing through the nonlinear device, a spike train including a spike bunch.
A Boolean logic gate comprising:
- a plurality of Pearson-Anson oscillators, each including a second-order memristor coupled to a capacitor in parallel and coupled to a resistor in series,
- wherein each second-order memristor comprises an active layer coupled to a first electrode and a second electrode, and
- wherein each second-order memristor is configured in a first state such that current is substantially prevented from flowing through the second-order memristor until a voltage across the respective capacitor exceeds a first threshold, and
- wherein upon each second-order memristor being configured in the first state and the voltage across the respective capacitor exceeding the first threshold, the second-order memristor is configured in a second state such that the current flows through the second-order memristor until the voltage across the capacitor is reduced below a second threshold, and
- wherein upon each second-order memristor being configured in the second state and the voltage across the capacitor reducing below the second threshold, the second-order memristor is configured in the first state such the current is substantially prevented from flowing through the second-order memristor;
- a first input to receive a first direct current input signal;
- and
- an output to generate, based in part on the direct current input signal, a digital output of a first value represented by a spike bunch including a current spike.
Dependencies are inferred from the claim text.