Rotary head type magnetic video recording and reproducing...

Details Rotary head type magnetic video recording and reproducing... Rotary head type magnetic video recording and reproducing...

G - Physics

11

B

352/21.1, 352/23

G11B 15/46 (2006.01) G11B 15/18 (2006.01) G11B 15/26 (2006.01) G11B 15/60 (2006.01)

Patent

CA 1068815

ROTARY HEAD TYPE MAGNETIC VIDEO RECORDING AND REPRODUCING SYSTEM ABSTRACT OF THE DISCLOSURE A recorded signal reproducing system includes a signal generator circuit which produces a tracking control signal in response to an output from a detection circuit which detects that a difference between an output of a peak hold circuit which holds a maximum amplitude of an envelope of a reproduced signal from a rotary head for a relatively long period and an output of an envelope detection circuit exceeds a predetermined threshold. The tracking control signal is used to control a relative posi- tional relationship between the rotary head and a magnetic tape for controlling tracking during the playback operations.

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