Control device, control method, and information storage apparatus

摘要

A control device includes an acquisition section which acquires a reading signal from a head under plural heat amounts, an computation section which computes plural kinds of characteristic values representing characteristics of the reading signal for each of the plural generated heat amounts by using at least one kind of algorithm, a contact determination section which determines whether or not the head contacts the storage medium for each of the two or more kinds of characteristic values based on a change of the characteristic values for the generated heat amount, and an association determination section which determines an association of a distance between the head and the storage medium with the generated heat amount when determined that the head contacts the storage medium for any of the characteristic values as the generated heat amount when the head contacts the storage medium so that the is considered to be zero.