Floppy disk drive apparatus

Details Floppy disk drive apparatus Floppy disk drive apparatus

1984-04-19

1987-02-17

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

G11B 1910

Patent

active

046444262

ABSTRACT:
A floppy disk drive apparatus includes a spindle for holding a floppy disk, a motor which is driven in response to a drive signal from a drive signal generator, thereby rotating the spindle, a head for writing data into this floppy disk and reading out data therefrom, and a control circuit which detects an index hole of the floppy disk and generates an index signal. This control circuit is provided with an inhibiting circuit for inhibiting the drive signal supplied to the motor when it has been detected that the floppy disk is not held on the spindle.

REFERENCES:
patent: 4246618 (1981-01-01), Bauer
patent: 4359763 (1982-11-01), Hoffman
patent: 4376293 (1983-03-01), Teramura et al.
patent: 4458273 (1984-07-01), Johnson

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