Floppy disk drive interface circuit

Details Floppy disk drive interface circuit Floppy disk drive interface circuit

1986-07-11

1988-02-09

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 40, G11B 509

Patent

active

047244933

ABSTRACT:
A floppy disk drive interface circuit of the invention has a counter/selector for counting the pulse width of a window signal supplied from a voltage frequency oscillator. When a window pulse having a pulse width longer or shorter than a preset pulse width is input, counter/selector supplies a disable signal to AND gate 22. AND gate 22blocks window signal 12 from VFO2 being supplied to FDC 3.

REFERENCES:
patent: 4644419 (1987-02-01), Iinuma et al.

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