Automatic tracking control system which utilizes a crosstalk env

Details Automatic tracking control system which utilizes a crosstalk env Automatic tracking control system which utilizes a crosstalk env

1992-07-06

1993-09-07

Dixon, Joseph L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Synchronizing moving-head moving-record recorders

360 7713, 358328, G11B 2104

Patent

active

052434745

ABSTRACT:
An automatic tracking control system with a servo loop, controlled by a tracking control signal, that adjusts the position of a pickup head in relation to tracks scanned by the head. Adjacent-track crosstalk is extracted by a crosstalk detector and envelope-detected by a crosstalk envelope detector. An automatic tracking control circuit varies the tracking control signal, finds a state that minimizes the crosstalk envelope, and maintains the tracking control signal at or near that state.
For double-deck recording systems in which one signal is recorded in surface tracks over another signal, the automatic tracking control circuit seeks a best compromise between minimizing the crosstalk envelope of one of the signals while maximizing the envelope of the other signal.

REFERENCES:
patent: 4177481 (1979-12-01), Yamagiwa et al.
patent: 4731674 (1988-03-01), Fukuda et al.
patent: 4752843 (1988-06-01), Kim
patent: 4812926 (1989-03-01), Jeon
Shiraishi et al., "Video Cassette Recorder Development for Consumers", IEEE Transactions on Consumer Electronics, vol. CE-24, No. 3, Aug. 1978, pp. 468-472.

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