Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Synchronizing moving-head moving-record recorders
Patent
1995-12-28
1999-09-28
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Synchronizing moving-head moving-record recorders
360 7308, 360 7311, 360 7713, G11B 2104, G11B 5584
Patent
active
059597992
ABSTRACT:
A method and apparatus for tracking control of a magnetic head having information signals and tracking signals recorded on a plurality of slanted tracks measures a time duration from a time when a rotary head drum passes a reference position to a time when the head starts to reproduce the tracking signal. The measured time duration and a reference value are compared to determine whether the difference falls within a predescribed range and the relative speed between the transporting speed of the tape and the peripheral speed of the rotary head drum is controlled based on the comparison results when the determination results falls within the prescribed ranged. The reference value is continuously monitored and updated from a memory when the measured difference exceeds a predetermined value.
REFERENCES:
patent: 3931639 (1976-01-01), Arter et al.
patent: 3964094 (1976-06-01), Hart
patent: 4951162 (1990-08-01), Yoshimura et al.
Singapore Patent Office Search Report, Dec. 19, 1996.
Faber Alan
Maioli Jay H.
Psitos Aristotelis M.
Sony Corporation
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