公开(公告)号：JP2002260355A

公开(公告)日：2002-09-13

申请号：JP2001052643

申请日：2001-02-27

Applicant: IBM

Inventor： HATTORI RYOHEITA ,  MATSUBARA NOBUYA ,  KOKUBO TETSUYA ,  UMEMURA KAORU ,  KAGAMI NAOYUKI

IPC: G11B21/10 ,  G11B19/04 ,  G11B20/18 ,  G11B27/36 ,  G11B33/10

Abstract: PROBLEM TO BE SOLVED: To improve the reliability of a burst pattern inspection in a hard disk drive. SOLUTION: The writing test of test pattern data on a track boundary is added besides the writing of a test pattern in a SAT test at the track center conventionally performed and the inspection of burst patterns (A, B patterns) by the writing test at that time. Thereby, a highly sensitive inspection of C and D burst patterns sensitive to a PES signal can be conducted on the track boundary.