Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1983-03-15
1985-05-07
Stellar, George G.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 78, G11B 555, G11B 558
Patent
active
045161771
ABSTRACT:
An improved rotating disk data storage device is achieved in a combination of an optical encoder to detect data track crossings, a servo sector surface on one of a plurality of rotating data storage disks with the surface being filled with a pattern of alternating bursts which are read for relative amplitude and compared to provide track centerline information. A programmed microprocessor and a rotary actuator for the data transducers combine with the other elements to move the transducers from track to track and keep them on track during data read and write operations.
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IBM Technical Disclosure Bulletin, vol. 23, No. 3, Aug. 1980, pp. 1203-1210, "Improvement in the Position Error Signal Detector Channel for a `Buried Servo` Recording System", C. Handen, R. W. Lissner, C. C. Liu & V. R. Witt.
Moon Ronald R.
Moon William G.
Peterson Bruce R.
Westwood Donald C.
Harrison David B.
Quantum Corporation
Stellar George G.
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