Video recorder
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United States of America Patent
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Oct 16, 1984
Grant Date -
N/A
app pub date -
Apr 6, 1982
filing date -
Apr 6, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a video tape recorder for recording a television signal composed of a picture carrier which has been frequency modulated with a video luminance signal, a chrominance subcarrier which has been modulated with a chrominance signal, and a plurality of audio carrier signals each composed of an audio carrier which has been frequency modulated with a respective audio signal along a recording track, and for playing such a signal, there are provided a recorder portion including circuits for reducing the audio carrier signals in frequency by difference formation of the television signal audio carrier signals with a stabilized reference frequency signal, and for recording the reduced frequency audio carrier signals with their original frequency separation in a frequency band located, in the recorded signal, essentially between the frequency spectrum of the chrominance subcarrier and a location in the frequency spectrum of the picture carrier, and a playback portion including circuits for returning the reduced frequency audio carrier signals to their original frequency levels by sum formation with the reference frequency signal.
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