Abstract: A system can include a nonlinear circuit and a voltage decoder. The nonlinear circuit can perform an operation on an input voltage. The operation can be changed. A voltage decoder can be communicatively coupled to the nonlinear circuit for receiving an output voltage from the nonlinear circuit that results from the operation performed on the input voltage. The voltage decoder can compare the output voltage to a threshold voltage and determine a result of the operation.

Abstract: A system can include a nonlinear circuit and a voltage decoder. The nonlinear circuit can perform an operation on an input voltage. The operation can be changed. A voltage decoder can be communicatively coupled to the nonlinear circuit for receiving an output voltage from the nonlinear circuit that results from the operation performed on the input voltage. The voltage decoder can compare the output voltage to a threshold voltage and determine a result of the operation.

Abstract: The present invention provides apparatuses and methods for chaos computing. For example, a chaos-based logic block comprises an encoding circuit block, at least one chaotic circuit block, a bias voltage generating circuit block, and a threshold circuit block. The encoding circuit block converts a plurality of digital inputs to an analog output. The plurality of digital inputs may comprise at least one data input and at least one control input. At least one chaotic circuit block is configured to iterate converting an input signal to an output signal by feeding the output signal to at least one chaotic circuit as the input signal at each iteration. The bias voltage generating circuit block converts a plurality of binary control inputs to a bias voltage. The threshold circuit block compares the output signal with a predetermined threshold, thereby generating a digital signal.

Abstract: The present invention provides apparatuses and methods for chaos computing. For example, a chaos-based logic block comprises an encoding circuit block, at least one chaotic circuit block, a bias voltage generating circuit block, and a threshold circuit block. The encoding circuit block converts a plurality of digital inputs to an analog output. The plurality of digital inputs may comprise at least one data input and at least one control input. At least one chaotic circuit block is configured to iterate converting an input signal to an output signal by feeding the output signal to at least one chaotic circuit as the input signal at each iteration. The bias voltage generating circuit block converts a plurality of binary control inputs to a bias voltage. The threshold circuit block compares the output signal with a predetermined threshold, thereby generating a digital signal.

Abstract: The present invention provides systems and methods for coupled dynamical systems for chaos computing. For example, a system for the coupled dynamical system comprises a first, second, and third circuit. The first circuit comprising a plurality of single dynamical systems forms a coupled dynamical system that reduces local noises in the plurality of single dynamical systems by diffusing the local noises across the coupled dynamical system. The second circuit, connected to the first circuit, receives the data and control inputs and builds an encoding map that translates the data and control inputs to an initial condition on an unstable manifold of the plurality of single dynamical systems in the coupled dynamical system. After the coupled dynamical system evolves, a third circuit, connected to the first circuit, samples a state of one of the plurality of single dynamical systems in the coupled dynamical system and builds a decoding map.

Abstract: The present invention provides systems and methods for coupled dynamical systems for chaos computing. For example, a system for the coupled dynamical system comprises a first, second, and third circuit. The first circuit comprising a plurality of single dynamical systems forms a coupled dynamical system that reduces local noises in the plurality of single dynamical systems by diffusing the local noises across the coupled dynamical system. The second circuit, connected to the first circuit, receives the data and control inputs and builds an encoding map that translates the data and control inputs to an initial condition on an unstable manifold of the plurality of single dynamical systems in the coupled dynamical system. After the coupled dynamical system evolves, a third circuit, connected to the first circuit, samples a state of one of the plurality of single dynamical systems in the coupled dynamical system and builds a decoding map.

Abstract: A logic gate array for implementing logical expressions is provided. The array includes a dynamically configurable logic gate having a chaotic updater for causing the logic gate to alternately operate as one of a several different logic gate types, the dynamically configurable logic gate alternating from operating as one logic gate type to a different logic gate type in response to one or more reference signals. The array also includes one or more additional logic gates.

Abstract: A dynamically configurable logic gate can include a controller configured to provide a first threshold reference signal; an adder configured to sum the first threshold reference signal and at least one input signal to generate a summed signal; a chaotic updater configured to apply a nonlinear function to the summed signal; and a subtractor configured to determine an output signal by taking a difference between a second threshold reference signal and the processed summed signal from the chaotic updater. The logic gate can operate as one of a plurality of different logic gates responsive to adjusting at least one of the threshold reference signals.

Abstract: A controlled stochastic resonance circuit applies stochastic resonance to bias a nonlinear device with a control signal having a selected amplitude, frequency, and phase to enhance or suppress the response of the device to a periodic signal embedded in noise.