Floppy disk driving with suitable on-delay and off-delay timing

Details Floppy disk driving with suitable on-delay and off-delay timing Floppy disk driving with suitable on-delay and off-delay timing

1985-03-25

1986-12-30

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Selective erase recording

360 61, 360 62, 360 63, G11B 502, G11B 509

Patent

active

046333371

ABSTRACT:
A floppy disk driving circuit comprises a memory circuit for storing a plurality of items of delay time of a pair of erase heads from the switching-ON and the switching-OFF of a read/write head for all the tracks of a floppy disk, a control circuit responsive to the memory circuit for controlling ON- and OFF-delay timing of the pair of erase heads based on the plurality of items of delay timing. The plurality of items of suitable timing are previously calculated in connection with the respective tracks of the disk and stored within the memory circuit.

REFERENCES:
patent: 4300174 (1981-11-01), Harman et al.
patent: 4442463 (1984-04-01), Krishnamurty et al.
patent: 4466025 (1984-08-01), Soejima

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