Patent attributes
Provided is a new apparatus for measuring a flying height of a head requiring none of a specific magnetization pattern, that is, ahead flying height measurement apparatus for use within a disk drive including a reading head, including: a signal replay unit 300 for replaying a signal from the reading head; filter units 320 and 322, being connected to the signal replay unit, for filtering the replayed signal; amplitude detection units 330 and 332, being connected to each of the filter units, for detecting a maximum amplitude or a representative value close thereto from the filtered replayed signal; and a calculation unit 340 for calculating a flying height of the reading head within the disk drive by using the maximum amplitude, or the representative value close thereto, which is detected by the amplitude detection unit.
