Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Synchronizing moving-head moving-record recorders
Patent
1986-08-21
1988-10-11
Cardillo, Raymond F.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Synchronizing moving-head moving-record recorders
360 77, G11B 5588, G11B 15473
Patent
active
047775432
ABSTRACT:
In an automatic tracking system for a magnetic recording and reproducing apparatus wherein tracking is controlled so as to increase an amplitude of a reproduced signal which is delivered from a rotary head for reproducing a track recorded by a helical scan system, the amplitudes of the reproduced signal are detected at a plurality of points of time within one rotational cycle of the rotary head, and the tracking is controlled so as to increase a minimum value among the detected values at the plurality of points of time.
REFERENCES:
patent: 3585291 (1971-06-01), Yamakawa
patent: 4104684 (1978-08-01), Wakari et al.
patent: 4143405 (1979-03-01), Kubota
patent: 4229773 (1980-10-01), Sakamoto
patent: 4613914 (1986-09-01), Kobori et al.
Goto Katsuhiko
Nishijima Hideo
Okamoto Kaneyuki
Usami Hiroshi
Cardillo Raymond F.
Hitachi , Ltd.
Robertson David L.
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