Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1982-10-13
1985-04-30
Stellar, George G.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
G11B 1924
Patent
active
045147710
ABSTRACT:
Data is stored on a rotating memory disk by maintaining constant the relative velocity between the recording transducer and the recording media. The rotational speed of the disk is varied as the transducer is translated radially of the disk recording surface, the disk surface being divided into a number of concentric track zones each containing a predetermined number of tracks. For any given zone, an optimum rotational motor speed is established and the rotational speed of the disk is maintained at that zone speed when the transducer position signals specify a given zone. As the transducer is commanded to step to a different track in a different zone, the rotational speed of the disk is altered to match the new zone speed within a relatively short period of time. Once the transducer is located within the given zone, the rotational disk speed is maintained at that zone speed for motion within the zone.
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patent: 2692141 (1954-10-01), Rudenauer
patent: 2901737 (1959-08-01), Stovall
patent: 3646259 (1972-02-01), Schuller
patent: 4190860 (1980-02-01), Somers et al.
patent: 4351044 (1982-09-01), Imanaka et al.
Barton David M.
Stark Glenn
Stellar George G.
Victor Technologies Inc.
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