Dynamic magnetic information storage or retrieval – General processing of a digital signal – Head amplifier circuit
Patent
1986-04-30
1987-02-17
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Head amplifier circuit
360 51, G11B 509
Patent
active
046444190
ABSTRACT:
A floppy disk unit has a motor drive mechanism and a data read/write circuit, a control means which changes the speed of rotation of motor and the electrical characteristics of the read/write circuit in accordance with the characteristic of the disk used and thereby the disks to be used with different speeds of rotation can be used in the same floppy disk unit.
REFERENCES:
patent: 3465321 (1969-09-01), Reisfeld
patent: 4314289 (1982-02-01), Haynes
patent: 4371901 (1983-02-01), Shah
patent: 4392164 (1983-07-01), Lequien
patent: 4479152 (1984-10-01), Chi
Iinuma Hiroshi
Sakaguchi Shuichi
Suzuki Takashi
Canney Vincent P.
Matsushita Electric - Industrial Co., Ltd.
Panafacom Limited
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