• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    TELEPHONE SYSTEM FOR REDUCED AREAS, containing satellite communications, a central control station and ground stations, each of which consists of a subscriber terminal, the outputs of which are connected to the first input of the first frequency synthesizer and the input of the transmitter, receiver and the second frequency synthesizer whose code is connected to the input of the subscriber terminal, and the central control station contains a switch, a control unit, the output of which is connected via a transmitter of commands to the first input of the modulator-demodule a torus, the second code and the outputs of which are connected respectively to the output of the transmitting frequency synthesizer, to the input of the command receiver, the output of which is connected to the input of the control unit, and to the input of the receiving frequency synthesizer, the output of which is connected to the input of the switch, which output is connected to the input of the transmitting frequency synthesizer, characterized in that, in order to reduce the waiting time for receiving call signaling data, two registers, a valve, an OR element, a one-shot, and an AND element, are entered into each ground station, Barely and a tone detector, the output of which is connected to the second input of the first frequency synthesizer, the corresponding inputs of which are connected to the outputs of the first register, and to the first input of the single vibrator, the second input and output of which are connected respectively to the output of the element I, the first i input of which is connected to the first inputs of registers, and with a control input of the relay, which is connected to the input of the subscriber terminal, the outputs of which are connected to the input of the tone detector, the second input of the And element and the per input of the valve, the second input and the stroke of which is connected respectively to the first output of the receiver and the first input of the OR element, the second input and the output of which are connected respectively to the first output of the receiver and the second inputs of the first register and the second register, the outputs of which are connected to the inputs of the second frequency synthesizer, and on the central control The station has two relays; a loudspeaker and a decoding unit, the outputs of which are connected to the additional inputs of the switch and the control unit, which is connected to the switch, with the corresponding outputs The control unit's dyes are connected via registers to the additional inputs of the transmitting frequency synthesizer and the receiving frequency synthesizer, the output of which is connected to the input of the decoding unit.
    公开号:SU1138059A3
    申请号:SU752127531
    申请日:1975-04-18
    公开日:1985-01-30
    发明作者:Герберт Эдстрем Нильс
    申请人:Телефонактиеболагет Л.М.Эрикссон (Фирма)；
    IPC主号:
    专利说明:

    1P The invention relates to radio engineering and can be used to create a telephone communication system in sparsely populated areas. A well-known telephone system for populated areas, comprising a communications satellite, a central control station and ground stations, each of which consists of a subscriber terminal, the outputs of which are connected to the first input of the first frequency synthesizer and to the input of the transmitter, receiver and the second frequency synthesizer , the output of which is connected to the input of the subscriber terminal, and the central control station contains a switch, a control unit, the output of which is connected to the first input of the module via a command transmitter a-demodulator, the second input and outputs of which are connected respectively to the output of the transmitting frequency synthesizer, to the input of the command receiver, the output of which is connected to the input of the control unit and to the input of the receiving frequency synthesizer, the output of which is connected to the input of the switch, the output of which is connected with the input of the transmitting frequency synthesizer Qj. However, the known system has a long waiting time for receiving call signaling data. The purpose of the invention is to reduce the waiting time for receiving call signal data. To achieve this goal in a telephone system for populated areas containing a communications satellite, a central control station and ground stations, each of which consists of a subscriber terminal, the outputs of which are connected to the first input of the first frequency synthesizer and to the input of the transmitter, receiver and the second frequency synthesizer, the output of which is connected to the input of the subscriber terminal, and the central control station contains a switch, a control unit, the output of which is connected to The first input of the modulator-demodulator, the second input and outputs of which are connected respectively to the output of the transmitting frequency synthesizer, to the input of the command receiver whose output is connected to the input of the control unit, and its 3rd input of the receiving frequency synthesizer whose output is connected to the input of the switch , the output of which is connected to the input of the transmitting frequency synthesizer, two registers are inserted into each ground station, a valve, an OR element, a one-shot, an AND element, a relay and a tone detector, the output of which is connected to the second at the input of the first frequency synthesizer, the corresponding inputs of which are connected to the outputs of the first register, and to the first input of the one-shot, the second input and output of which are connected respectively to the output of the element I, the first input of which is connected to the first inputs of the registers, and to the control input of the relay connected to the input of the subscriber terminal, the outputs of which are connected to the input of the tone detector, to the second input of the element I and to the first input of the valve, the second input and output of which are connected respectively to the first output n The first input and output of the RHH element are connected to the first output of the receiver and the second inputs of the first register and the second register, the outputs of which are connected to the inputs of the second frequency synthesizer, and two registers and a decoding unit are entered at the central control station , the outputs of which are connected to the additional inputs of the switch and the control unit, which is connected to the switch, while the corresponding outputs of the control unit through the registers are connected respectively to to the additional inputs of the transmitting frequency synthesizer and the receiving frequency synthesizer, the output of which is connected to the input of the decoding unit. The drawing shows a structural electrical circuit of the proposed telephone system. The telephone system for populated areas contains a communication satellite 1, a central control station 2 consisting of a switch 3, a control unit 4, a command transmitter 5, a demodulator modulator 6, a command receiver 7, an alternating frequency synthesizer 8, a receiver frequency synthesizer 9, first and second registers 10 and 11 of demodulation unit 12, and ground stations 13, each of which consists of receiver 1A, first and second frequency synthesizers 15 and 16, subscriber terminal 17, transmitter 18, first and second registers 19 and 20, in ntil 21 .lementa OR 22, monostable element 23j and 24, relays 25 and tone detector 26. The telephone system operates eleduyuschim manner. The ground station 13 to which the subscriber is connected (not shown in the drawing) transmits via communication satellite 1 a message about the calling state of the subscriber to the central control station 2, in which a command is issued about the distribution to the transfer network. speech to the subscriber, and transmits this command back to the same ground station 13 Receiver 14 ground station 13 receives this signal and using the second frequency synthesizer 16 connects the subscriber to the call. At the same time, the receiving frequency synthesizer 9 at the central control station 2 connects the decoding unit 12 through the switch 3 of the subscriber to the corresponding called ground station 13 to allow the transmission of information about the subscriber number. The control unit 4 issues the corresponding commands via the first and second registers 10 and 11 to the transmitting frequency synthesizer 8 and the receiving frequency synthesizer 9 to create a conversational circuit between subscribers. The subscriber terminal 17 at the ground station 13 transmits from the subscriber is not shown in the drawing) - voice signals to the transmitter 18. as well as the first FW.STPT synthesizer 15. The Pere sensor 18 is adapted to transmit code words via the communication satellite 1 to the central control Station 2 The first and second frequency synthesizers 15 and 16 are adapted to connect the subscriber to the calling or called side of the voice channel. The gate 21 is connected in series with the element OR 22 and control signals from the output of the receiver 14 are sent to the first and second frequency synthesizers 15 and 16 through the first and second registers 19 and 20. The prohibitory input of the valve 21 is connected to the output of the subscriber terminal 17 to prohibit so that the equipment of the first and second frequency synthesizers 15 and 16 influences the work of the subscriber in case of his occupation. By this, time is maintained during the establishment of connections, due to the fact that the message from the ground station 13 to the central control station 2 can be transmitted after the establishment of the connection. The subscriber terminal 17 connects the element AND 24 in such a way that the control input of the subscriber terminal 17 receives a signal when the subscriber is in a calling state, and the tone detector 26 is set to an installation state, indicating that the caller is connected to the subscriber, and the state connected to the output of tone detector 26, the user terminal 17 is returned to its initial state by means of a relay 25, which has a control input connected to the output of the one-vibrator 23. Such a construction of the ground station is 13 INH for immediate interruption manipulation Thorn tone to the subscriber, when the information is about room. The reset signal is fed from the output of receiver 1-4 to the first and second registers 19 and 20, which control the first and second frequency synthesizers, respectively. 15 and 16. Communication satellite 1 information via modulator-demodulator 6 at central control station 2 arrives at command receiver 7, the output of which is connected to control unit 4. Control unit 4 is designed to generate command words that can be performed by selective addressing to ground stations 13. Switch 3 and decoding unit 12 are required for subscriber operation with manipulated voice frequency information. From the output of the control unit 4, information in the form of a control word is transmitted to the transmitter 5 of the command and then through the modulator torus demodulator 6 to the communication satellite 1. In this case, the control unit 4 can receive both voice information and manipulated voice frequency information about calling subscribers. Transmitting frequency syn
    权利要求:
    Claims (1)
    [1]
    TELEPHONE SYSTEM FOR RARE-POPULATED AREAS, containing a communication satellite, a central control station and ground stations, each of which consists of a subscriber terminal, the outputs of which are connected to the first input of the first frequency synthesizer and the input of the transmitter, receiver and second frequency synthesizer, the output of which is connected to the input of the subscriber terminal, and the central control station contains a switch, a control unit, the output of which through the transmitter of commands is connected to the first input of the modulator-demodulator, the second input and outputs of which are connected respectively with the output of the transmitting frequency synthesizer, with the input of the command receiver, the output of which is connected to the input of the control unit, and with the input of the receiving frequency synthesizer, the output of which is connected to the input of the switch, the output of which is connected to the input of the transmitting frequency synthesizer, characterized in that, in order to reduce the waiting time for receiving signal data of a call, two registers, a gate, an OR element, a single vibrator, an And element, a relay, and a detector t are introduced into each ground station it, the output of which is connected to the second input of the first frequency synthesizer, the corresponding inputs of which are connected to the outputs of the first register, and to the first input of a single-vibrator, the second input and output of which are connected respectively to the output of the And element, the first ( whose input is connected to the first inputs of the registers , and with the control input of the relay, which is connected to the input of the subscriber terminal, the outputs of which are connected to the input of the § § detector, the second input of the AND element, and the first input of the valve, the second input and output of which are connected to respectively, with the first output of the receiver and the first input of the OR element, the second input 2 and the output of which are connected respectively to the first output of the receiver and the second inputs of the first register and second register, the outputs of which are connected to the inputs of the second frequency synthesizer, and two registers are introduced at the central control station and a decoding unit, the outputs of which are connected to additional inputs of the switch and the control unit, which is connected to the switch, while the corresponding outputs of the control unit through the registers keys respectively to additional inputs of the transmitting frequency synthesizer and the receiving frequency synthesizer whose output is connected to the input of the decoding unit.
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    同族专利:
    公开号 | 公开日
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    BR7502285A|1976-03-09|
    GB1502666A|1978-03-01|
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    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE7405276A|SE373997B|1974-04-19|1974-04-19|
    SE7405277A|SE373998B|1974-04-19|1974-04-19|
    SE7405280A|SE373999B|1974-04-19|1974-04-19|
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