Disk drive employing method of writing a data block to a data se

Details Disk drive employing method of writing a data block to a data se Disk drive employing method of writing a data block to a data se

1998-06-22

2000-06-20

Loomis, Paul

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 31, 360 7708, G11B 2722

Patent

active

060784520

ABSTRACT:
A disk drive employs a method for writing a block of data (or multiple blocks of data) to a data region following a defective servo sectors. The disk drive includes a sampled head positioning servo system and a rotating disk with a plurality of data tracks on a surface of the disk. Each data track has multiple spaced-apart sequentially-active servo sectors. Data regions are disposed between the servo sectors. The method includes the step of executing a command to perform a write operation to write a data block to a target data region. A defective servo sector S.sub.n is encountered preceding the target data region during the write operation. The defective servo sector S.sub.n precedes a servo sector S.sub.n+1 and follows a servo sector S.sub.n-1. A timer interval is set to enable a first detection window Dw.sub.n+1 for detecting a field in servo sector S.sub.n+1 . If the field is detected within the detection window Dw.sub.n+1, a field is detected within a detection window Dw.sub.n-1 for the servo sector S.sub.n-1. The data block is written in the target data region following the defective servo sector S.sub.n based on detecting the field within the detection window Dw.sub.n-1 for the servo sector S.sub.n-1 . A timer interval is set to enable a second detection window Dw.sub.n+1 for detecting a field in the servo sector S.sub.n+1 . If the field in the servo sector S.sub.n+1 is detected within the second detection window Dw.sub.n+1, the data block is marked as being successfully written.

REFERENCES:
patent: 4412165 (1983-10-01), Case et al.
patent: 4805046 (1989-02-01), Kuroki et al.
patent: 5153784 (1992-10-01), Kitamura
patent: 5153788 (1992-10-01), Nishikawa et al.
patent: 5434725 (1995-07-01), Hirose et al.
patent: 5710677 (1998-01-01), Teng et al.
patent: 5798883 (1998-08-01), Kim
patent: 5959797 (1999-09-01), Imai et al.

Affiliated with

Also associated with

Rating

Disk drive employing method of writing a data block to a data se does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Disk drive employing method of writing a data block to a data se, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk drive employing method of writing a data block to a data se will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1858190