Device for mutually transmitting direct current signals and audio-frequency signals

The invention is based on the object of developing a known transmission device, in which only a direct current signal as remote-control signal and audio-frequency signals are transmitted via a two-wire line, in such a manner that a plurality of direct current signals can be transmitted. This object...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	STOLLFUSS, HANS-WERNER, 1000 BERLIN, DE, DALLMANN, HORST
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS SELECTING TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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