Apparatus and method for detecting insertions and removals of fl

Details Apparatus and method for detecting insertions and removals of fl Apparatus and method for detecting insertions and removals of fl

1995-06-07

1997-10-07

Lee, Thomas C.

Dynamic magnetic information storage or retrieval

Head

Core

395838, 360 69, G06F 1130

Patent

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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