公开(公告)号：EP0836187A4

公开(公告)日：1999-03-10

申请号：EP95923563

申请日：1995-06-29

Applicant: IBM

Inventor： YAMADA SHUJI

IPC: G11B20/18 ,  H03M13/00

CPC classification number: H03M13/00 ,  G11B20/1833 ,  G11B2020/183

Abstract: This invention relates to an efficient execution of error recovery process of a signal read error in a signal recording/reproduction apparatus. The apparatus has a table for defining an execution sequence of a plurality of error recovery processes, and one structural body is allocated to each error recovery process in this table. Each structure has an address for calling a corresponding error process and addresses of corresponding error recovery processes to be executed precedingly and subsequently. The addresses relating to the preceding and subsequent structures are re-written by a LRU method of a weighing method so as to change the chain relation of the structures, and an optimum error process can be executed more quickly.

公开(公告)号：SG74027A1

公开(公告)日：2000-07-18

申请号：SG1997003791

申请日：1997-10-18

Applicant: IBM

Inventor： SUZUKI HIROAKI ,  ASANO HIDEO ,  TOBARI ATSUSHI ,  NISHINO SATOSHI ,  YAMADA SHUJI ,  ANDOH HARUP ,  KOWA TSUGUAKI

IPC: G06F3/06 ,  G06F11/00 ,  G11B19/00 ,  G11B19/04 ,  G11B20/00 ,  G11B20/10 ,  G11B20/18

Abstract: An error recovery procedure (ERP) in a storage device such as a rotating magnetic hard disk drive is executed to the last step regardless of the established time-out period for an instruction, thereby more reliably recovering from errors. In accordance with one embodiment of the invention, when a disk drive receives a reset instruction from a host during the execution of an ERP, it executes the ERP until the error is recovered, or to the last step without interrupting the ERP. Further, in accordance with another embodiment of the invention, when a disk drive receives a reset instruction during the execution of an ERP, it stops execution of the ERP and holds the number K of the step which was completed immediately before stopping, and when receiving a retry instruction after that, sequentially executes the ERP from the K+1-th error recovery step.