Scan tracking apparatus for helical scan video tape recorder

Details Scan tracking apparatus for helical scan video tape recorder Scan tracking apparatus for helical scan video tape recorder

1983-02-28

1985-05-28

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 102, 360 70, G11B 558

Patent

active

045204101

ABSTRACT:
A scan tracking apparatus for a helical scan tape recorder, comprising a movable tape head (11), a detector (13) detecting the envelope of the tape signal to produce a reproduced signal, sampling means (15) for sampling the reproduced signal at fixed points of the helical scan, memory (17) for storing the reproduced signal and correction signals from different tracks of the helical scan, computation means (2) for computing a correction signal to return the tape head to the center of the track, a sawtooth generator (2, 4) for producing a signal related to the tape speed (v), and a head driving mechanism (9) for moving the tape head in response to the sawtooth and correction signals.

REFERENCES:
patent: 4148083 (1979-04-01), Watanabe
patent: 4433350 (1984-02-01), Tsuruta
patent: 4443823 (1984-04-01), Sakamoto

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