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LUT BASED NEURON MEMBRANE POTENTIAL UPDATE SCHEME IN STDP NEUROMORPHIC SYSTEMS
LUT BASED NEURON MEMBRANE POTENTIAL UPDATE SCHEME IN STDP NEUROMORPHIC SYSTEMS
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机译:STDP神经系统中基于LUT的神经元膜电位更新方案
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摘要
A method and system are provided for updating a neuron membrane potential in a spike time dependent plasticity model in a Neuromorphic system. The method includes approximating a shape of an analog spike signal from an axon input using a hardware-based digital axon timer. The method further includes generating a first intermediately updated neuron membrane potential value from a current axon timer value, a current synapse weight value and a current neuron membrane potential value using a first look-up table and an accumulator. The method also includes generating a second intermediately updated neuron membrane potential value with a leak decay effect using a second look-up table and the first intermediately updated neuron membrane potential value. The method additionally includes generating a final updated neuron membrane potential value based on a comparison of the second intermediately updated neuron membrane potential value with a neuron fire threshold level using a comparator.
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