Magnetic disk storage apparatus in which servo track zone provid

Details Magnetic disk storage apparatus in which servo track zone provid Magnetic disk storage apparatus in which servo track zone provid

1976-10-07

1978-01-10

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 77, 360 98, 360135, G11B 2110, G11B 5012

Patent

active

040682676

ABSTRACT:
A magnetic disk storage apparatus having a servo disk and a servo transducer cooperating therewith is described. The servo disk is provided with a magnetically pre-recorded concentric arrangement comprising of an inner guard zone, a servo track zone, and an outer guard zone. The servo track zone provides information regarding both the moving speed and the position of the servo transducer; while at least one of the inner or outer guard zones provides information regarding both the moving speed and the guard zone of the servo transducer.

REFERENCES:
patent: 3864741 (1975-02-01), Schwarz
patent: 3893180 (1975-07-01), Braun et al.
patent: 3994016 (1976-11-01), Moghadam
patent: 4030132 (1977-06-01), Iftikar et al.
patent: 4032984 (1977-06-01), Kaser et al.

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