Patent ID: 6178053
Filing Date: 2001-01-23
Classification: G11B

Abstract:
A storage apparatus comprising:a read demodulating unit demodulating read data and servo data which is used for head positioning from a reproduction waveform signal of a read head;a fault detecting unit setting a predetermined threshold for said reproduction waveform signal and outputting a fault signal when said reproduction waveform signal exceeds said threshold;an error avoiding unit which is provided for said read demodulating unit and operates so as to avoid a read error when said fault signal is generated; anda threshold setting unit monitoring the presence or absence of the output of the fault signal while reducing the threshold of said fault detecting unit in a state in which the head is positioned into a data region of said disk medium and the medium is reproduced and an amplitude value of the reproduction waveform signal is detected, detecting whether the fault signal is generated, setting said detected threshold to an amplitude value of said reproduction waveform signal, and setting a value obtained on the basis of said amplitude into said fault detecting unit as a threshold.