RF tracking servo for VTR with adjustable servo loop gain

Details RF tracking servo for VTR with adjustable servo loop gain RF tracking servo for VTR with adjustable servo loop gain

1990-03-20

1992-06-02

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Synchronizing moving-head moving-record recorders

360 7713, G11B 15467

Patent

active

051192462

ABSTRACT:
A video signal is recorded in oblique tracks on a magnetic tape. The tracks are successively scanned by rotary heads, and a reproduced radio frequency signal is obtained. The level of the signal as reproduced exhibits a nonlinearity as a function of deviations of the rotary heads from the successively scanned oblique tracks. In accordance with the invention, the running speed of the tape is controlled on the basis of the detected changes in signal level, and the gain of the reproduced radio frequency signal is controlled in such a way as to compensate for the nonlinearity of the reproduced signal.

REFERENCES:
patent: 4319289 (1982-03-01), Ravizza

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