Floppy disc driving apparatus

Details Floppy disc driving apparatus Floppy disc driving apparatus

1983-09-30

1987-03-24

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 70, 360 75, 360 99, G11B 2102, G11B 554

Patent

active

046529500

ABSTRACT:
A floppy disc driving apparatus includes a floppy disc driver, a head-load driver, an index sensor for generating an index pulse for each rotation of a floppy disc and a signal generator for supplying a drive signal to the head-load driver. It further includes a timer circuit, a head-load flag area and a control circuit for setting the timer circuit to a preset time period longer than the time required for one rotation of the floppy disc in response to an index pulse from the index sensor and setting a head drive inhibition flag in the head-load flag area in response to a signal generated form the timer circuit upon completion of the counting of the preset time period by the timer circuit.

REFERENCES:
patent: 3715523 (1973-02-01), Rousseau et al.
patent: 4375070 (1983-02-01), Isozaki et al.

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