FREQUENCY BASE METHOD FOR DETECTING AND CLASSIFYING DEFECTIVE REGION OF HARD DISK CAPABLE OF DETECTING AND CLASSIFYING A DEFECTIVE REGION OF A HARD DISK BASED ON A FIRST MEASUREMENT VALUE AND A SECOND MEASUREMENT VALUE

摘要

PURPOSE: A frequency base method for detecting and classifying defective region of hard disk is provided to detect the defective region of hard disk based on a first measurement value and a second measurement value through a frequency base measurement value.;CONSTITUTION: A preamplifier(110) amplifies and adjusts a read-head output signal. The preamplifier establishes signal amplification and frequency components within designated ranges. An AFE(Analog Front End)(120) more amplifies and adjusts a pre-amplified signal from the preamplifier. An ADC(Analog Digital Converter)(130) changes an AFE out to a digital signal.;COPYRIGHT KIPO 2011