Positioning device for the access arm of the magnetic head...

Details Positioning device for the access arm of the magnetic head... Positioning device for the access arm of the magnetic head...

G - Physics

11

B

352/30.3, 352/21

G11B 5/56 (2006.01) G11B 5/596 (2006.01) G11B 21/08 (2006.01) G11B 21/10 (2006.01)

Patent

CA 1066410

POSITIONING DEVICE FOR THE ACCESS ARM OF THE MAGNETIC HEAD OF A MAGNETIC DISK STORAGE ABSTRACT The surface of a magnetic disk (23) is divided into servo sectors (S1) and data sectors (S2). A selectively posi- tionable magnetic head (24) effects, in predetermined time intervals controlled by clock signals of a clock sensor (26), the transfer of servo and data signals. The servo signals sensed in the servo sectors are used for the track following control of the magnetic head. The servo markings (Ma) recorded in the servo sectors (S1) are arranged, with twice the width (2d) of the data tracks in radial distances of one respective track width (d), one be- side the other in a row along a disk radius. In each servo sector at least three rows (A, B, C) of servo markings (Ma) are provided. The servo markings are arranged in track di- rection one behind the other in such a manner that between each of the rows (A, B, C) a distance (g) is formed, and that each servo marking of one row overlaps a servo marking of the following row by one track width (d).

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