Hard disk drive with reduced sized servo sectors and driving met

Details Hard disk drive with reduced sized servo sectors and driving met Hard disk drive with reduced sized servo sectors and driving met

1996-11-08

1998-06-23

Tran, Thang V.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Address coding

360 778, 360 7814, G11B 5596

Patent

active

057711267

ABSTRACT:
The present invention provides a hard disk drive that employs a plurality of data recording disks. According to a first embodiment, one of the data recording disks provides first and second recording surfaces that each exhibit specific servo patterns. The first recording surface includes first servo sectors with first burst regions positioned within each one of the first servo sectors. Each one of the first servo sectors has a first full gray code recorded outside the corresponding first burst regions. The second recording surface includes second servo sectors with second burst regions positioned within each one of the second servo sectors. Each one of the second servo sectors has a second full gray code recorded within the corresponding second burst regions and no gray code recorded outside the corresponding second burst regions. The remaining data recording disks each have recording surfaces with the same servo pattern as the second recording surface.

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patent: 5499232 (1996-03-01), Hardwick
patent: 5576909 (1996-11-01), Dierkes et al.

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