Multilayer perception neural network scheme disk memory device and signal processing device

摘要

A disk memory device comprises a head which reads a data recorded on a disk and outputs a read-out signal, an A/D converter which converts the read-out signal into a digital signal, and a signal processing circuit of a multilayer perceptron type neural network scheme which receives the digital signal converted by the A/D converter, wherein the signal processing circuit has an input layer which inputs the digital signal, a hidden layer having a plurality of hidden nodes, and an output layer which outputs an output signal, and the input layer has a weighting arithmetic circuitry which is shared by the each hidden node, calculates a coupling weighting coefficient between the input layer and the plurality of hidden nodes, and outputs a result of multiplying a digital signal by the weighting coefficient to the plurality of hidden nodes.