Apparatus and method for detecting insertions and removals of fl

Dynamic magnetic information storage or retrieval – Head – Core

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395838, 360 69, G06F 1130

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active

056758332

ABSTRACT:
A method and system for determining insertions and removals of floppy disks in a floppy disk drive. By monitoring states of a write protect signal, the present invention determines when floppy disks of a predetermined type are inserted into, and removed from, a floppy disk drive. More specifically, the present invention evaluates current states of the write protect signal in light of a default state of the write protect signal to determine when these floppy disks are inserted into, and removed from, the floppy disk drive.

REFERENCES:
patent: 4665445 (1987-05-01), Saito
patent: 5173816 (1992-12-01), Ogihara
patent: 5239426 (1993-08-01), Sakaegi
patent: 5293625 (1994-03-01), Miura et al.
patent: 5301293 (1994-04-01), Kano
patent: 5548784 (1996-08-01), Easley, Jr. et al.
IBM Technical Reference, Personal Computer AT System BIOS 5, ROM BIOS Code Listing for Floppy Controller, IBM, 1985, pp. 97-116.

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