Head switching method for staggered servo and circuit thereof

Details Head switching method for staggered servo and circuit thereof Head switching method for staggered servo and circuit thereof

1998-01-02

2000-07-11

Kim, W. Chris

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360 51, G11B 1512, G11B 509

Patent

active

060881801

ABSTRACT:
A head-switching circuit for switching a first head operating on a first recording medium to a second head operating on a second recording medium so as to read out data written on a recording medium according to a staggered servo mechanism, includes a selector for selecting one of the recording media, a classifier 20, 30, 31, 32 and 33 for classifying the skew time of a recording medium selected by the selector and another recording medium selected by the selector, a sync signal generator 40, 41, 42, 50, 51, 60, 61, 62, 70, 71, 72 and 80 enabled by the output signal of the classifier and for generating a sync signal when the skew time is identical with a predetermined time, thereby generating a sync signal precisely during head-switching in staggered servo mechanism.

REFERENCES:
patent: 4388713 (1983-06-01), Tatsuguchi
patent: 5444583 (1995-08-01), Ehrlich et al.
patent: 5473482 (1995-12-01), Saito et al.
patent: 5475544 (1995-12-01), Takeuchi

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