METHOD AND EQUIPMENT FOR PROCESSING GROUP SIGNALS

According to this invention, signals are recorded on magnetic tape by frequency modulation of signal to carrier and then replayed by frequency demodulation. Based on existing video tape recorder, such circuits as reference signal generator, modulator and demodulator are added. The group-channel audi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LIANG BINGYAO, HUANG SHAN, YAO BENHAI
Format:	Patent
Sprache:	eng
Schlagworte:	INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS
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Beschreibung
Zusammenfassung:	According to this invention, signals are recorded on magnetic tape by frequency modulation of signal to carrier and then replayed by frequency demodulation. Based on existing video tape recorder, such circuits as reference signal generator, modulator and demodulator are added. The group-channel audio signals and the group-channel signals whose electric characteristics are similar to audio signal may be recorded and replayed and a two-purpose group-channel audio/video recorder is made up. The loss of signal on magnetic tape only cause a very small blank of original signal. It may be used for computer or document storage.