The present invention relates to an artificial neural network to which an artificial neural pulse coding principle is applied and a neural network constructed by using the artificial neural pulse coding principle and performing separation and recognition of a pattern using phase information of a neural circuit, A transistor M2 provided with a predetermined signal Vr3 and a transistor M2 connected between the two transistors M1 and M2 and provided with a predetermined input signal Sj A synapse circuit 10 constituted by a combination of the input signal Sj (M3) and emitting or absorbing a current 13 proportional to the weighting voltage when a predetermined input signal Sj (t) is provided, And a colorimetric projection circuit 30 for converting an output signal of the nerve body circuit 20 into a predetermined pulse string by a predetermined reference signal It is characterized by being composed
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