Receiving system for transmitting information transmitted by a mobile transmitter to a central station
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
A receiving system for transmitting information from a mobile transmitter to a central station comprising several sub-stations which are connected to the central station by means of a common line. Several stations can receive the signal from the mobile station but only the sub-station at which the reception is best transmits the information from the mobile station to the central station.
-
Citations
8 Claims
- 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.
- 5. In a receiving system for transmitting information signals between a mobile station and a fixed central station via one selected sub-station out of a plurality of sub-stations coupled to the central station via a transmisson line, each sub-station comprising, a radio receiving information circuit for receiving signals having intelligence thereon and having an output coupled to said transmission line for supplying received information signals to the central station, a delayed-signal generator having first and second input terminals and first and second output terminals, means coupled to the receiving circuit for deriving a control signal determined by the amplitude of a received signal and an output coupled to said first input terminal of the delayed-signal generator, means for coupling the transmission line to the second input terminal of the delayed-signal generator for applying thereto a rest condition signal generated by one of the other sub-stations, and wherein said coupling means includes means coupling the first output terminal of the delayed-signal generator to the transmission line for applying a rest condition signal to the other sub-stations coupled to said transmission line in a manner such that the second input terminal of the delayed-signal generator is isolated from said rest condition signal when it appears at said first output terminal, and means connecting the second output terminal of the delayed-signal generator to an input of the receiving circuit for controlling the transmission of information signals through said receiving circuit.
-
8. 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 frequency generator, means including said frequency generator for coupling the output terminal of the delayed-signal generator to the transmission line for applying a rest condition signal to the other sub-stations, means coupling the second input terminal of the delayed-signal generator to the transmission line via a frequency detection device for applying a rest condition signal, generated by one of the other sub-stations, to said one substation, 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.
Specification