Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1989-11-21
1991-12-03
Wolff, John H.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
360 69, G11B 1518, G11B 1900
Patent
active
050704176
ABSTRACT:
A disc drive control method in which a command for disc rotation is sent to the disc drive mechanism upon receipt of a `drive-ON` signal, a timing operation is started in response to receipt of a `drive-OFF` signal, and a command for stoppage of the disc rotation is sent to the disc drive mechanism if there is no further `drive-ON` signal received within a predetermined time interval. A disc drive control system comprises devices for effecting the steps of the disc drive control method. A disc drive unit employable in the disc drive control method and system comprises a disc drive mechanism for producing rotational movement of a disc and a disc drive control device for controlling rotation of the disc by means of the disc drive mechanism. The disc drive control method and/or system may also be applied to an information processing system which comprises at least a processor and a flexible disc drive unit.
REFERENCES:
patent: 4445188 (1984-04-01), Barrett
patent: 4635145 (1987-01-01), Horie et al.
patent: 4701813 (1987-10-01), Miyake et al.
patent: 4727443 (1988-02-01), Miyake et al.
Hitachi , Ltd.
Wolff John H.
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