Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1987-09-08
1989-10-24
Faber, Alan
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 75, 318696, G11B 555, G11B 2108
Patent
active
048766186
ABSTRACT:
A magnetic disk drive device includes a rotatable disk. The disk has at least data tracks and guard band tracks. The data is previously recorded on the data tracks in the reversed magnetization form, whereas no data is recorded on the guard band track. While the magnetic head seeks the data from the tracks, the data is detected at first from the data track. This position where the first data is detected is recognized as a zero track. The magnetic head data seeking is performed based upon this zero track which is electronically detectable.
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IBM TDB vol. 19, No. 4, "Head to Track Synchronizing Mechanism for Magnetic Disks" Porter et al., 9/76, pp. 1393-1395.
Ide Jun
Iizumi Tomoo
Alps Electric Co. ,Ltd.
Faber Alan
Garland Steven R.
Shoup Guy W.
Winters Paul J.
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