Magnetic media and servo synchronization method

Details Magnetic media and servo synchronization method Magnetic media and servo synchronization method

1987-12-23

1993-01-05

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 75, G11B 5596

Patent

active

051776510

ABSTRACT:
A flexible data disk has consecutive servo tracks having a synchronization and alternate synchronization mark. The synchronization and alternate synchronization marks in each servo sector are radially aligned. Four magnetic pulses represent a synchronization mark and two magnetic pulses represent an alternate synchronization mark. The disk drive system will read and identify the synchronization marks and alternate synchronization marks and start generating timing pulses as appropriate. The servo bursts can then be read allowing the disk drive system to center the transducer head over the data tracks.

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patent: 4205357 (1980-05-01), Barton et al.
patent: 4287540 (1981-09-01), Cheatham et al.
patent: 4297737 (1981-10-01), Anderson et al.
patent: 4458278 (1984-07-01), Maclay et al.
patent: 4636884 (1987-01-01), Hattori et al.
patent: 4737869 (1988-04-01), Sugaya et al.
patent: 4823212 (1989-04-01), Knowles et al.
patent: 4833551 (1989-05-01), Song
IBM TDB vol. 18, No. 10, "Track Following Servo System" Oswald, Mar. 1976, pp. 3424-3425.
8032 "Electronics", 59 (1986) Nov., No. 35, pp. 81-83 Entitled: How to Boost Floppy-Disk Capacity to 11 Megabytes.

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