Automatic tracking device for VCR with capstan motor controlled

Details Automatic tracking device for VCR with capstan motor controlled Automatic tracking device for VCR with capstan motor controlled

1987-05-22

1989-03-14

Faber, Alan

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Synchronizing moving-head moving-record recorders

360 7312, 358329, G11B 15467, H04N 979

Patent

active

048129267

ABSTRACT:
The present invention relates to an automatic tracking device for VCR designed to achieve an automatic tracking by making compensation for phase of capstan motor depending on the relative magnitudes of real color signal and cross talk signal among reproduced video signals. When video signal is reproduced, the envelope of real color signal and the envelope of cross talk signal are detected by separating a real color signal and a cross talk signal from among the reproduced video signals. Thus, signals proportional to the relative magnitudes of these two envelope detecting signals are outputted to capstan motor as signals making compensation for advancing phase or delaying phase to achieve an automatic tracking.

REFERENCES:
patent: 4120008 (1978-10-01), Metzger et al.
patent: 4513311 (1985-04-01), Hirai et al.
patent: 4695781 (1987-09-01), Ito
patent: 4731674 (1988-03-01), Fukuda et al.
patent: 4748518 (1988-05-01), Suzuki

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