Tracking control circuit

Details Tracking control circuit Tracking control circuit

1992-04-07

1994-03-15

Gluck, Richard E.

Dynamic magnetic information storage or retrieval

Record editing

360 7713, H04N 578

Patent

active

052950220

ABSTRACT:
A tracking control circuit for use in a composite digital video tape recorder, wherein the phase of a control signal is adjusted on the basis of a reproduced envelope signal in an interval of low correlativity to recorded contents out of the composite digital video signal reproduced by a recording head, so that the tracking position of the recording head relative to a video track is controlled to a predetermined proper position. In this circuit, accurate tracking control can be achieved at enhanced precision without enlarging the circuit scale or increasing the production cost.

REFERENCES:
patent: 4197564 (1980-04-01), Ravizza
patent: 4229773 (1980-10-01), Sakamoto
patent: 4404601 (1983-09-01), Sakamoto
patent: 4412259 (1983-10-01), Hiraguri
patent: 4447835 (1984-05-01), Smith
patent: 4777543 (1988-10-01), Nishijima et al.
patent: 5107381 (1992-04-01), Mitsuhashi et al.
patent: 5119246 (1992-06-01), Tomitaka

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