公开(公告)号：JPH10255403A

公开(公告)日：1998-09-25

申请号：JP5775197

申请日：1997-03-12

Applicant: IBM

Inventor： KAKIHARA TOSHIO ,  KANAMARU ATSUSHI ,  SATO TAKUMI ,  SATO MASAHIKO

IPC: G06F3/06 ,  G11B19/04 ,  G11B20/12 ,  G11B20/18 ,  G11B27/36

Abstract: PROBLEM TO BE SOLVED: To reduce the error processing time during a reset, by executing a first error recovering processing while controlling a write controlling means if a writing error is detected and executing a second error recovering processing, which is small in the number of execution commands than an error recovering processing(ERP), while controlling the means if a reset instruction is detected. SOLUTION: If a reset is requested, a control section 3 does not execute the ERP, the selector being selected is assumed to be defective, the temporary registration processing of the defective sector is conducted, the assignment of a spare sector is made and the updating of a reassigned table is executed. In the normal ERP having no reset request, many processings are repeated from such a judgement that is not a reset, up to the judgement of an error recovering impossible. Thus, the number of steps, which are actually to be executed, becomes extremely large. Therefore, the time required to execute the processings greatly differs for between the case of a reset is requested and the case in which no request is made for a reset.

公开(公告)号：JPH11213356A

公开(公告)日：1999-08-06

申请号：JP361698

申请日：1998-01-12

Applicant: IBM

Inventor： TANAKA HIDETSUGU ,  HARADA YOSHINAO ,  SATO MASAHIKO ,  SATO TAKUMI

IPC: G11B5/10 ,  G11B5/31 ,  G11B5/41 ,  G11B5/60 ,  G11B21/00

Abstract: PROBLEM TO BE SOLVED: To provide a method to remove a deposit stuck to the head of an information recording and reproducing device. SOLUTION: A step 102 where the head read/write operation is stopped, a step 106 for amplitude selection, steps 108 and 110 where the seek operation is repeated with the selected amplitude, a step 116 where this amplitude is changed, steps 108 and 110 where the seek operation is repeatedly performed with the changed amplitude, and a step 114 where the amplitude is repeated I successively changed to repeatedly perform the seek operation are provided. In the operating information recording and reproducing device, a deposit stuck to the head which reads and writes data in and from a rotating disk recording medium is removed.