Data storage apparatus having servo control system

Details Data storage apparatus having servo control system Data storage apparatus having servo control system

1995-02-07

1997-08-19

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7704, 360 7705, 360 7814, G11B 5596

Patent

active

056594372

ABSTRACT:
Two-phase servo patterns are recorded on a servo area of a data medium of a data storage apparatus such that patterns Q+, N+, N- and Q- are recorded in the stated order, there being a phase shift of 90 degrees between position information N and position information Q.

REFERENCES:
patent: 4048660 (1977-09-01), Dennison et al.
patent: 4400747 (1983-08-01), Siverling
patent: 4499511 (1985-02-01), Sugaya
patent: 4669004 (1987-05-01), Moon
patent: 4987355 (1991-01-01), Leaper
patent: 5388010 (1995-02-01), Norton
patent: 5453888 (1995-09-01), Tsunoda
patent: 5469113 (1995-11-01), Steyaert
patent: 5483393 (1996-01-01), Mento

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