Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1986-11-26
1987-08-11
Cardillo, Raymond F.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 70, G11B 552, G11B 15467
Patent
active
046865896
ABSTRACT:
An apparatus for reproducing an information signal which was recorded along with one of four successive pilot signals of different frequencies from one another for every one track of a recording medium in a prescribed rotation, including a reproducing head for tracing the recording track, apparatus for selectively producing four reference signals of substantially the same frequencies as those of the respective pilot signals one at a time in a rotation different from the prescribed rotation, and apparatus for detecting a position error of the reproducing head relative to the recording track by using the four reference signals and at least one of the four pilot signals reproduced through the reproducing head.
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patent: 4497000 (1985-01-01), Terada et al.
patent: 4509083 (1985-04-01), Nakano
Canon Kabushiki Kaisha
Cardillo Raymond F.
Garland Steven R.
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