Disc drive servo pattern insensitive to read head

Details Disc drive servo pattern insensitive to read head Disc drive servo pattern insensitive to read head

1997-06-02

2000-05-23

Ometz, David L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7707, G11B 5596

Patent

active

060672048

ABSTRACT:
In a disc drive, a position error signal (PES) can be generated that is insensitive to the read element's magnetic and physical geometry and micro-track profile, and that has a spatial domain periodic frequency that corresponds to a frequency region of the micro-track profile that facilitates a high magnitude response. The servo pattern for generating this PES includes a first servo burst pair (A,B) and a second servo burst pair (C,D) of servo burst members, each pair written as normal and quadrature channels.

REFERENCES:
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patent: 4616275 (1986-10-01), Peeters
patent: 4766508 (1988-08-01), Mathewson
patent: 4977471 (1990-12-01), Nigam
patent: 5164863 (1992-11-01), Janz
patent: 5473550 (1995-12-01), Cameron et al.
patent: 5500776 (1996-03-01), Smith
patent: 5689384 (1997-11-01), Albrecht et al.

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