Method and apparatus for recording disk servo information with d

Details Method and apparatus for recording disk servo information with d Method and apparatus for recording disk servo information with d

1987-10-13

1989-05-16

Faber, Alan

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7703, 360 7811, 360 9701, G11B 558, G11B 3306

Patent

active

048314706

ABSTRACT:
A method and apparatus for originally recording servo information on a disk surface. The apparatus comprises a servo writer assembly which includes an optical encoder having a movable input member and means for producing an output signal which indicates small uniform units of movement of said input member. The servo writer assembly is detachably mounted to a disk storage system with the optical encoder input member tightly physically coupled to the head arm of the storage system head disk assembly. During servo writing, the optical encoder output signal is connected in a closed servo loop with the head positioner motor so that the positioner motor can then be operated to precisely radially increment the servo head, track by track, over the disk servo surface.

REFERENCES:
patent: 3875589 (1975-04-01), Applequist et al.
patent: 4068268 (1978-01-01), Idemoto et al.
patent: 4371902 (1983-02-01), Baxter et al.
patent: 4531167 (1985-07-01), Berger

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