Title:
DISK STORAGE DEVICE
Document Type and Number:
Japanese Patent JP2625609
Kind Code:
B2
Abstract:
PURPOSE: To provide a sector format removed of an ID area for a disk file, which is for recording data of a fixed block system.
CONSTITUTION: The disk file is provided with at least one track which is divided into plural sectors. Each sector is divided into a 'servo and restoration' area 30 and data area 32, and a full track number is recorded in a position field 35 within the 'servo and restoration' area. A track start displaying mark is recorded in one selected sector in each track, and a sector start displaying mark is recorded in each of the plural sectors of the track. The number of the sector start displaying marks after the passing of the track start displaying mark are counted to identify a sector. A defective sector is excluded by mapping, through the use of a look-up table.
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Inventors:
John Stewart Best
Stephen Robert Hetzler
Stephen Robert Hetzler
Application Number:
JP15083292A
Publication Date:
July 02, 1997
Filing Date:
June 10, 1992
Export Citation:
Assignee:
International Business Machines Corporation
International Classes:
G11B20/10; G11B20/12; G11B20/18; G11B27/10; G11B27/30; (IPC1-7): G11B20/12; G11B5/09; G11B20/10
Domestic Patent References:
| JP3130929A | ||||
| JP4975233A |
Attorney, Agent or Firm:
Koichi Tonmiya (1 person outside)