Head switching signal producing circuit with compensation of a p

Details Head switching signal producing circuit with compensation of a p Head switching signal producing circuit with compensation of a p

1986-05-14

1987-11-10

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360 61, 360 70, G11B 1514

Patent

active

047061375

ABSTRACT:
A head swtiching signal producing circuit produces a head switching signal by electrically compensating for a phase error on a rotational plane of a rotary drum between a mounting position of a rotary head on the rotary drum and a mounting position of a rotational phase detector which is used to detect a rotational phase of the rotary drum, so as to produce an accurate head switching signal without controlling the mounting position of the rotational phase detector within a small tolerance.

REFERENCES:
patent: 3994019 (1976-11-01), Sagishima et al.
patent: 4021857 (1977-05-01), Tanimura
patent: 4040101 (1977-08-01), Zoellner et al.
patent: 4361856 (1982-11-01), Okamoto
patent: 4614985 (1986-09-01), Tsuruta
patent: 4626932 (1986-12-01), Muller
patent: 4636875 (1987-01-01), Scholz

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