Dynamic magnetic information storage or retrieval – Head – Core
Patent
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.
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patent: 5173816 (1992-12-01), Ogihara
patent: 5239426 (1993-08-01), Sakaegi
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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.
Radko Ronald O.
Toutonghi Michael
Dinh D.
Lee Thomas C.
Microsoft Corporation
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