Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1997-05-20
1999-09-14
Tran, Thang V.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
360 69, G11B 1546
Patent
active
059531762
ABSTRACT:
In a high-density FDD for driving a magnetic disk medium of an FD inserted thereinto, a switch unit 50 detects whether the inserted FD is a large-capacity FD or a small-capacity FD. A control device 60 is connected to the switch unit 50, a control device 60 controls drive of a spindle motor 100 so as to rotate the spindle motor 100 at a high rotation speed when the inserted FD is identified as a large-capacity FD, and so as to rotate the spindle motor 100 at a low rotation speed when the inserted FD is identified as a small-capacity FD.
REFERENCES:
patent: 4656533 (1987-04-01), Sakai et al.
patent: 5434722 (1995-07-01), Bizjak et al.
Itoh Toshimitsu
Majima Yoshihide
Shimazu Teruo
Shimizu Toshiharu
Mitsumi Electric Co. Ltd.
Tran Thang V.
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