Two sided magnetic disk drive apparatus with controlled timing m

Details Two sided magnetic disk drive apparatus with controlled timing m Two sided magnetic disk drive apparatus with controlled timing m

1984-01-13

1986-07-22

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

360 70, 360 75, 360 78, G11B 502, G11B 2108

Patent

active

046023011

ABSTRACT:
A magnetic disk drive apparatus writes data in a magnetic disk by use of first and second magnetic heads. The track position on the magnetic disk where the first or second magnetic head exists is detected, and a delay time corresponding to the detected track position is set into a timer circuit. In the write-in mode, a CPU starts the operation of a read/write head section of the selected one of the first and, second magnetic heads and thereafter, when a delay time which is set into the timer circuit has passed, the CPU starts the operation of an erase head section of the selected one of the first and second magnetic heads.

REFERENCES:
patent: 3860958 (1975-01-01), Hanson
patent: 4300174 (1981-11-01), Harman et al.
patent: 4367505 (1983-01-01), Stromsta et al.

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