公开(公告)号：JP2002100126A

公开(公告)日：2002-04-05

申请号：JP2000281184

申请日：2000-09-18

Applicant: IBM

Inventor： TAKASE MAKOTO ,  KOBAYASHI KEIJI ,  KIHASHI AKIRA

IPC: G11B27/00 ,  G11B20/18

Abstract: PROBLEM TO BE SOLVED: To provide a recording and reproducing device, storage device, computer system, data processing method, and program transmitting device which can effectively protect data stored in a storage medium and a recording disk. SOLUTION: When the number of times of the retrial until a successful readout of data is a prescribed number of times or more, the data are once saved in a spare sector SS, the data are overwritten in a data sector DS in which the data are stored originally. Furthermore, at the time of saving data in the spare sector SS and overwritting the data in the data sector DS, pointer information on a RDM table stored in a reserved area RA which is a nonvolatile memory is rewritten suitably, respectively.

公开(公告)号：JPH11191201A

公开(公告)日：1999-07-13

申请号：JP35689697

申请日：1997-12-25

Applicant: IBM

Inventor： SUZUKI HIROMASA ,  KURACHI KOJI ,  SUDA KATSUMI ,  ASANO HIDEO ,  OKADA KENJI ,  TAKASE MAKOTO ,  KIHASHI AKIRA ,  NISHINOMIYA HIROMI ,  MATSUI TAKAO ,  ENDO TATSUYA ,  KUROKI KENJI

IPC: G11B5/02 ,  G11B5/09 ,  G11B5/39 ,  G11B5/455 ,  G11B19/04 ,  G11B20/18

Abstract: PROBLEM TO BE SOLVED: To improve the performance of an information recording/reproducing device using a GMR(giant magnet resistance) sensor. SOLUTION: This method aims at the restoration of an operating error generated in an information recording/reproducing device including a storage medium, a head using a GMR sensor, an actuator arm for mounting the head and locating the head on a prescribed position on the front surface of the storage medium and a control part for controlling the operation of the actuator arm and read/write operation. At this time, it comprises a step for executing a first error restoring procedure 103, a step for executing a first GMR evaluating procedure 109 for evaluating the performance of the GMR sensor when the operating error is not restored in the first error restoring procedure and a step 117 for impressing a reset pulse to the GMR sensor in accordance with the first GMR evaluating procedure.