AUDIO/VIDEO SIGNAL RECORDING METHOD

The method comprises modulating a carrier signal with a colour video signal, modulting a subcarrier frequency with an audio frequency signal and selecting the carrier and subcarrier frequences such that the upper frequency deviation limit of the frequency modulated carrier signal is lower than the u...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	WILKISON RICHARD L
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	The method comprises modulating a carrier signal with a colour video signal, modulting a subcarrier frequency with an audio frequency signal and selecting the carrier and subcarrier frequences such that the upper frequency deviation limit of the frequency modulated carrier signal is lower than the useful frequency upper limit of the recording medium. The subcarrier frequency is selected to be less than the lower second chrominance sideband of the modulated carrier. The frequency modulated subcarrier and carrier signals are added and the zero crossings of the resultant signal are detected. The zero crossings are then recorded.