The information access device and the record media where

摘要

PROBLEM TO BE SOLVED: To provide an information access device capable of easily and accurately calculating power supplied to a heater, and setting a head flying height to a target flying height, and a flying height control method.;SOLUTION: A difference value between a gain control value when a head comes into contact with a recording medium and a gain control value when the head floats by a target flying height with respect to the recording medium, is stored in advance. When the information access device is actually operated, supply power to the heater is adjusted to once bring the head into contact with the recording medium, a first gain control value adjusted by a gain control section when the head comes into contact with the recording medium is obtained, a second gain control value to be adjusted by the gain control section when the head floats by the target flying height with respect to the recording medium is obtained from the first gain control value and the difference value, and supply power to the heater is adjusted such that the second gain control value is supplied to a gain variable amplifier by the gain control section.;COPYRIGHT: (C)2010,JPO&INPIT