METHOD AND MECHANISM FOR DETERMINING WRITING POSITION IN DISCRETE TRACK TYPE MAGNETIC RECORDING MEDIUM, AND EVALUATION DEVICE OF THE DISCRETE TRACK TYPE MAGNETIC RECORDING MEDIUM USING THE MECHANISM AND HARD DISK DRIVE

摘要

PROBLEM TO BE SOLVED: To more accurately determine a writing position in a DTM.;SOLUTION: A method for determining the writing position in the DTM includes: a recording process S1 of applying a magnetic field having a predetermined magnetized pattern to a recording medium for each predetermined angle range θ_k corresponding to the radial position R_k of a recording medium while discretely changing the radial position R_k of a magnetic head at N stages near an evaluation target track; a squeezing process of applying a magnetic field having an erase pattern by moving the radial position of the magnetic head with respect to the corresponding radial position R_k for each angle range θ_k; a reproduction process S3 of reading magnetic data from the recording medium; a process S4 of obtaining the reproductivity index I_k of the read magnetic data for each radial direction R_k; and the process S5 of determining the radial direction R_k corresponding to the extreme value of the reproductivity index I_k as an optimal writing position with respect to a track.;COPYRIGHT: (C)2010,JPO&INPIT