Video recorder providing transient-free audio signals

Details Video recorder providing transient-free audio signals Video recorder providing transient-free audio signals

1982-07-01

1984-08-07

Martin, John C.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358343, 360 191, H04N 9491, H04N 5782

Patent

active

044646844

ABSTRACT:
A television tape recorder in which a television signal, composed of a picture carrier which is frequency modulated with a video signal and an audio carrier each frequency modulated with an LF audio signal, is recorded along successive oblique tracks of a record carrier such that one successive picture field is recorded along each track. The recorder includes a playback portion composed of two playback heads for alternatingly scanning successive tracks on the record carrier such that successive segments of the modulated audio carrier are picked up by alternate ones of the heads, two separate FM demodulators each connected to a respective playback head for receiving the audio carrier segments picked up its respective heads and for demodulating those segments, an audio signal path, and a switching device connected between the demodulators and the path for selectively connecting each demodulator to the path during the time when the playback head connected to that demodulator is scanning a track, whereby interference in the audio signal in the path is reduced.

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