Apparatus employing adjustable modulation index for reducing...

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H04N 5/92 (2006.01) H04N 5/782 (2006.01) H04N 5/923 (2006.01) H04N 9/79 (2006.01) H04N 9/802 (2006.01) H04N 9/835 (2006.01)

Patent

CA 1265614

SO3057 PATENT ABSTRACT OF THE DISCLOSURE Apparatus for recording audio and video signals comprises a signal processor for producing a processed video signal and a frequency-modulated audio signal. The frequency-modulated audio signal is obtained by frequen- cy-modulating a carrier in response to an input audio signal. A magnetic recorder records both the frequen- cy-modulated audio signal and the processed video signal in oblique tracks arranged successively on a magnetic tape. The recording is done selectively in a first recording mode wherein the oblique tracks are formed with spaces between successive tracks or a second recording mode wherein succes- sive tracks are contiguous. A modulation control controls the frequency-modulation carried out by the signal processor to produce the frequency-modulated audio signal with a first modulation index in the first recording mode and with a second modulation index greater than the first modulation index in the second recording mode. -1-

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