Method and apparatus for developing position error curves for ma

Details Method and apparatus for developing position error curves for ma Method and apparatus for developing position error curves for ma

1997-10-01

1999-12-21

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7702, G11B 5596

Patent

active

060057408

ABSTRACT:
A disk having a servo burst pattern used for generating PES curves for MR heads is disclosed. The disk has a plurality of tracks and each of the tracks has a track width. The servo burst pattern includes a first servo burst and a second servo burst forming a first servo burst pair; and, a third servo burst and a fourth servo burst forming a second servo burst pair. The second servo burst pair is circumferentially adjacent to the first servo burst pair. The third servo burst spans a distance of (TW/2+K(TW/2)), while the fourth servo burst spans a distance of ((TW/2+(2-K)(TW/2)). In the above equations, TW equals the track width and 0<K<1. Furthermore, a method of generating a PES curve for a disk drive including an MR head and a magnetic disk having a servo burst pattern written thereon is also disclosed. The method includes the steps of (1) reading servo burst patterns from the magnetic disk, the servo burst patterns including first and second servo bursts which intersect at a first point, the first and second servo burst patterns having a width that is equal to one another, third and fourth servo burst patterns which intersect each other at a second point which is radially between the first point and another track centerline, the third servo burst pattern having a width equal to K(TW/2) and the fourth servo burst pattern having a width equal to (2-K)(TW/2) where 0<K<1 and TW is the track width; (2) centering the MR head at a position between the intersection of first and second servo bursts and intersection of third and fourth servo bursts; and, (3) obtaining a reading from the head after it has been centered.

REFERENCES:
patent: 5436773 (1995-07-01), Hanson
patent: 5771131 (1998-06-01), Pirzadeh
patent: 5825579 (1998-10-01), Cheung et al.
patent: 5892634 (1999-04-01), Ito et al.
patent: 5923492 (1999-07-01), Liikanen

Affiliated with

Also associated with

Rating

Method and apparatus for developing position error curves for ma does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for developing position error curves for ma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for developing position error curves for ma will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-511177