Disc memory apparatus utilizing detection of high-accuracy addre

Details Disc memory apparatus utilizing detection of high-accuracy addre Disc memory apparatus utilizing detection of high-accuracy addre

1992-01-27

1993-12-07

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7705, 360 78011, 369 44026, G11B 2102, G11B 7095

Patent

active

052688038

ABSTRACT:
A disc memory apparatus allows its magnetic head to reach a target track in a short period of time, wherein address data is recorded on each two-track width corresponding to each of the even-numbered and the odd-numbered tracks; either of two kinds of burst signals is recorded on each one-track width corresponding to each of the even-numbered and the odd-numbered tracks; the address of the record track is detected, based on the result of a comparison of two kinds of burst signals and the first address data, or in addition to this, the detected address data is further offset by the second address data; since the lengths of the servo sector areas required to detect the address data are shortened, the address data of the magnetic head are detected to a higher accuracy using a smaller number of reference signals; and the magnetic head can be moved at a fast speed, thus in a short period of time, resulting in a short seek time.

REFERENCES:
patent: 5065382 (1991-11-01), Seko et al.

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