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Receiving system for transmitting information transmitted by a mobile transmitter to a central station

  • US 4,293,954 A
  • Filed: 01/10/1979
  • Issued: 10/06/1981
  • Est. Priority Date: 01/13/1978
  • Status: Expired due to Term
First Claim
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1. In a receiving system for transmitting information from a mobile station to a fixed central station via one sub-station out of a plurality of sub-stations connected to the central station by means of a transmission line wherein each sub-station comprises, a radio receiving circuit having an output coupled to the transmission line, a device for measuring the quality of a received signal and having an output connected to a first input terminal of a delayed-signal generator, said delayed-signal generator having a second input terminal and an output terminal, a switching device for coupling the output terminal of the delayed-signal generator to the transmission line for applying a rest condition signal developed at said output terminal to the other sub-stations via said transmission line and further coupling said second input terminal of the delayed-signal generator to the transmission line for applying a rest condition signal, generated by one of the other sub-stations, to the said one sub-station and for isolating the second input terminal of the delayed-signal generator from a rest condition signal appearing at said output terminal of the delayed-signal generator, and means further connecting the output terminal of the delayed-signal generator to an input of the receiving circuit for applying a signal thereto for releasing the receiving circuit.

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