KR0148811B1 - Trs system - Google Patents

Abstract

The present invention adds the combined function of the wireless telephone to the TRS terminal, thereby securing the convenient function of the wireless telephone that can be conveniently used at home or office in addition to the special function as a mobile communication terminal that only the TRS terminal has, thereby further maximizing efficiency. In addition, it is possible to effectively use the 600-channel TRS wireless line, so that it is possible to secure the channel in a better state to solve the problem of the call quality caused by the minority channel of the current wireless telephone. To contribute to the improvement.

Description

Terminal and Frequency Control Method of Common Frequency Communication System

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal of a common frequency communication system, and more particularly, to a terminal and a control method of a frequency common communication system (TRS), which is used as a terminal for mobile use and can be used for a wireless telephone when necessary at home or office. It is about.

In general, the internal configuration of a terminal (hereinafter, referred to as a TRS terminal) of a frequency common communication system is classified into 18 parts according to functions as shown in FIG.

That is, the antenna 1 for transmission and reception, the duplexer 2, the receiver 3, the frequency synthesizer 4, the transmitter 5, the low frequency amplifier 6, the squelch comparator 7, and the reception Data processing device 8, Push To Talk (PTT) switch 9, speaker 10, external storage device 11, control device 11, control device 12 And a tone generator 13, a keyboard 14, an LCD display 15, a transmission data processing device 16, an audio processing device 17, a microphone 18 and the like.

The function of each component of the TRS terminal as described above is as follows.

An antenna for transmitting and receiving 1 is required as a means for amplifying a high frequency modulated signal to a high gain state and firing it into a space, or for receiving a received signal with low loss, and the duplexer 2 transmits and receives an antenna It is necessary to use.

In addition, the receiver 3 performs frequency processing to obtain a data signal source required by the TRS terminal from the high frequency signal, and the transmitter 5 transmits the transmission data or the audio signal generated by the control device 12 to the space. There is a frequency synthesizing device 4 which modulates the oscillation frequency required by the control device 12 and modulates the oscillation frequency required by the transmitter 5 and the receiver 3.

The low frequency amplifier 6 amplifies the signal converted from the receiver 3 to the base band and converts the signal to an audible frequency via the speaker 10. The squelch comparator 7 of the receiver 3 It is used to determine the reception level, and the PTT switch 9 is used when attempting or answering a call.

The external storage device 11 is for the control device 12 to be used when necessary, the tone generator 13 is required for signaling with the exchanger when a telephone call is applied, and the keyboard 14 is used for dialing when using the phone. need.

In addition, the LCD display unit 15 provides the user with the convenience of the operation state of the terminal, the transmission data processing device 16 serves to generate data transmitted during transmission, and the voice processing device 17 is a voice. It modulates the signal, generates and sends the required signal to the transmission data processing device 16, or listens to the tone generated by the tone generator 13, but is controlled by the control device 12, and the microphone 18 transmits It is a device for converting into an electrical signal.

2 is a flowchart of a terminal control of a conventional frequency common communication system.

The operation process with the conventional TRS terminal made as described above is described with reference to FIGS. 1 and 2 as follows.

When the power of the TRS terminal is first turned on (step 100), the PTT switch 9 is turned off (step 101), and the control device 12 of the TRS terminal is a home (frequency) used by a repeater registered with itself. The channel is converted into a reception frequency and the unique number registered in the external storage device 11 is read (step 102).

Then, the receiver 3 is turned ON (step 103) and the receiver receives a received signal (step 104), and the received signal is continuously checked or, if there is a received signal, the received signal is decoded (step 105). From step 106, it is checked whether there is information necessary for itself, and if it is not data related to its call, it is determined as meaningless data, and information about the empty channel is stored in the received data (step 113).

On the other hand, if there is information about itself in the decoded data, the sender's unique number, the received unique number, and the empty channel number are stored (step 107), and it is checked whether it is a call to be received (step 108), and then it is received. If the call is not to be stored, it is stored in the buffer storage device for transmission suppression (step 114). If it is a call of itself, it is checked whether it is a fixed unique number stored in the external storage device 11 (step 109) If it is not the unique number stored in the memory device 11, go to step 120 (b) of FIG. 3, and if the stored unique number, the control device 12 has a higher priority than the unique number being used. 3) and the low frequency amplifier (step 111) are turned off.

If the channel specified by the repeater is the same as the channel currently being used, as shown in (d) of FIG. 3, the receiver 3 and the low frequency amplifier 6 are turned on (steps 143 and 144), and the reception state is established ( Step 145), the process returns to step 104 of FIG. 3 (a) to continue the decoder operation on the received signal, and if the channel designated by the repeater is not the same as the channel currently being used, the repeater as shown in FIG. The reception frequency is changed to the designated channel (step 140), the low frequency amplifier 6 is turned on, and the reception state is entered (step 142).

On the other hand, if it is not stored as a fixed unique number in the call or external storage device 11 to receive it in step 109 of FIG. 3 (a), go to step 120 of FIG. 3 (b) and receive the received unique number. Check if it is in the decoder unique number block (step 120), and if it is in the decoder unique number block, continue checking whether it has a higher priority than the unique number in use (step 121). When received, the control device 12 of the TRS turns off the low frequency amplifier 6 (step 122) and then checks whether the current channel and the channel designated by the repeater are the same (step 123).

At this time, if the channel being used and the channel designated by the repeater are the same, the low frequency amplifier 6 is turned on (step 124) and the reception state is turned on (step 125). Finally, if the channel specified by the repeater is different from the channel currently being used, the TRS terminal Turns off the receiver 3 (step 127), changes to the channel designated by the repeater (step 128), turns on the receiver 3, turns on the low frequency amplifier 6, and enters the receiving state (step 131).

The terminal and the control method of the conventional frequency common communication system (TRS) as described above have very low utilization efficiency compared to the frequency capacity of the current TRS terminal, and the function of the TRS terminal is not only monotonously used compared to the potential function. Due to the small number of channels used by the radiotelephone, communication quality such as interference is not good, resulting in a problem that the reliability of the frequency common communication system is degraded.

In order to solve the problems described above, the present invention provides a convenient function of a wireless telephone, which can be conveniently used in a home or an office, in addition to a special function as a mobile communication terminal having only a TRS terminal by adding a function of a wireless telephone to a TRS terminal. As well as maximizing the efficiency more effectively, and effectively using 600-channel wireless line, it is possible to secure the channel in a better state to the problem of call quality due to the minority channel of the current wireless telephone SUMMARY OF THE INVENTION An object of the present invention is to provide a terminal and a control method thereof for a frequency employment communication system that can contribute to improving the reliability of a common communication system.

1 is a block diagram of a terminal of a conventional frequency common communication system.

2 is a terminal control flowchart of a conventional frequency common communication system.

3 is a block diagram of a terminal of a common frequency communication system according to the present invention.

4 is an operation flowchart of a terminal in a wireless telephone mode (outgoing call) according to the present invention;

5 is a flowchart illustrating the operation of the terminal in the radiotelephone mode (incoming call) according to the present invention.

* Explanation of symbols for main parts of the drawings

1: antenna for transmitting and receiving 2: duplexer

3: receiver 4: frequency synthesizer

5: transmitter 6: low frequency amplifier

7: Squelch comparator 8: Receive data processing device

9: PTT switch 10: Speaker

11: external storage device 12: control device

13: tone generator 14: keyboard

15: LCD display 16: Transmission data processing device

17: voice processing device 18: microphone

19: mode switch 21: subscriber line

22: general telephone 23: line interface

24: controller 25: transmitter

26: frequency synthesizer 27: receiver

28: duplexer 29: antenna for transmission and reception

The present invention transmits and receives an antenna, a duplexer, a receiver, a frequency synthesizer, a transmitter, a low frequency amplifier, a squelch comparator, a reception data processing device, a PTT switch, a speaker, an external storage device, a control device, a tone generator, a keyboard, an LCD display, a transmission data. In a common frequency communication system including a processing device, a voice processing device, and a microphone, a wireless communication system with a corresponding fixed device is connected to one side of the control device by connecting a mode switching switch to switch to a wireless phone mode when used as a wireless telephone. The phone and the TRS terminal are configured to be used interchangeably.

And transmit / receive antenna, duplexer, receiver, frequency synthesizer, transmitter, low frequency amplifier, squelch comparator, receive data processing device, PTT switch, speaker, external memory device, control device, tone generator, keyboard LCD display, transmit / receive data processing device, In the control method of a common frequency communication system terminal including a voice processing device, a microphone, and a mode changeover switch, when the mode changeover switch is switched to a radiotelephone operating mode, the control unit sets and transmits a unique number code for a radiotelephone. Lowering and scanning to match the channel (step 200) and when the user presses the send button to use the wireless telephone during the scanning process, the control device fires an outgoing signal with a unique number code (step 201, 202, and the control device of the fixed device in the process is a signal emitted from the TRS terminal Checking the unique number code and the outgoing signal and then turning on the transmitter, and firing a response signal together with the unique number code (steps 203 and 204), and the TRS terminal from the reception state of the reception data processing apparatus. Checking the status, and transmitting the subscriber line connection request signal to the fixed device (steps 205 and 206) when the wireless line condition is good, and the fixed device checks the connection state of the subscriber line, and then connects the line relay to the PSTN. Transmitting the dial tone sent from the exchange to the TRS terminal through a wireless line (steps 207 to 209); the user of the TRS terminal dials for a telephone request; and the fixed device receives a DTMF dial tone coming from the TRS terminal. The process of transmitting to the line (steps 210 and 211), and periodically exchanges a unique number code between the fixing device and the TRS terminal during the call and When pressing the end button when the call is terminated, the process of transmitting the call termination signal from the control device of the TRS terminal to the fixed device (steps 212 to 214), and the fixed device line relay receiving the call termination signal is blocked, and the TRS terminal And the fixing device consists of turning off the transmitter and starting the scanning operation (steps 215 to 217).

Hereinafter, described in detail by the accompanying drawings as follows.

3 is a block diagram of a terminal of a common frequency communication system according to the present invention.

That is, the TRS terminal (B) can be classified into 19 parts according to the function, the fixing device (A) is divided into nine functional blocks, the TRS terminal (b) is a transmitting and receiving antenna (1), duplexer (2) , Receiver (3), frequency synthesizer (4), transmitter (5), low frequency transmitter (6), squelch comparator (7), reception data processing device (8), PTT switch (9), speaker (10), external Storage device 11, control device 12, tone generator 13, keyboard 14, LCD display 15, transmission data processing device 16, audio processing device 17, microphone 18 and modes It may be classified as a changeover switch 19.

And the fixed device (A) for use as a wireless telephone is a subscription line 21, a general telephone 22, a line interface 23, a control device 24, a transmitter 25, a frequency synthesizer 26, a receiver (27), the duplexer 28, and the antenna 29 for transmission / reception.

The TRS terminal B is used as a means for launching a high-frequency modulated signal from the TRS terminal B to the antenna 1 for transmission and reception with high gain in space or for receiving a received signal with low loss, and the duplexer 2 uses the antenna. It is necessary to use for both sending and receiving.

In addition, the receiver 3 performs frequency processing for obtaining the data signal source required by the TRS terminal B from the high frequency signal, and the transmitter 5 stores the transmission data or the audio signal generated by the control device 12 in space. There is a frequency synthesizing apparatus 4 which modulates the oscillation process for transmitting the signal to the transmitter and can oscillate the oscillation frequencies required by the transmitters 5 and the receivers 3 by the control of the control apparatus 12. The amplifier 6 amplifies the signal converted from the receiver 3 to the base band and converts the signal to the audible frequency through the speaker 10.

And the squelch comparator 7 is necessary for determining the reception signal level of the receiver 3, and the reception data processing apparatus 8 decodes the reception signal passing through the receiver 3 to check whether there is necessary information, that is, It is necessary to always use a good wireless line by judging and selecting the radio quality state, the PTT switch 9 is used when attempting or answering a call, and the external storage device 11 is a control device ( 12) is a RAM for use when necessary, the tone generator 13 generates a DTMF signal necessary for signaling with the exchange when applying for a telephone call, the keyboard 14 is required for dialing when using the phone, the LCD display ( 15) is necessary to know the operating status of this device and also provides convenience to the user.

In addition, the transmission data processing device 16 is necessary for generating data to be transmitted during transmission, and the voice processing device 17 modulates a voice signal or generates and sends a required signal to the transmission data processing device 16 or generates a tone generator. The tone generated by 13 can be heard and controlled by the control device 12. The microphone 18 is a device for converting a call sound into an electrical signal, and the mode changeover switch 9 is TRS. When you want to use for a terminal or a cordless phone, all the necessary switches for switching.

On the other hand, the fixed device (A) has a subscriber line 21 connected to the trunk line and a general telephone 22 that can be used in connection with the fixed device (A), a line interface for connecting to the fixed device (A) ( 23), there is a control device 24 for controlling the fixed device, and a data or voice signal from a signal received through a transmitter 25 and a duplexer 28 for modulation processing for transmitting a voice signal or data to a space. There is a receiver 27 for demodulating a.

In addition, there is a frequency synthesizing device 26 which generates the frequencies required by these transmitters 25 and the receiver 27 by the control of the control device 24. Finally, a transmitting / receiving antenna which can use transmission and frequency in common. There is (29).

4 is an operation flowchart of the terminal in the radiotelephone mode (outgoing call) according to the present invention, and FIG. 5 is an operation flowchart of the terminal in the radiotelephone mode (incoming call) according to the present invention.

The present invention made as described above is described in detail with reference to FIGS. 3 to 5 as follows.

First, when the outgoing call operation description of the TRS terminal in the wireless telephone mode is described with reference to FIGS. 3 and 4, the TRS terminal (B) may be used as a mobile telephone in a home or office after being used as a TRS portable terminal while moving. A mode switching switch 19 attached thereto switches the radio telephone operation mode.

At this time, the control device 12 of the TRS terminal B sets a unique number code for a radiotelephone, lowers the transmission power to 10 kHz, and then starts a scan operation to match the channel with the fixing device A (step 200). When the user presses a send button to use the wireless telephone during scanning (step 201), the control device 12 of the TRS terminal B emits a call signal with a unique number code (step 202). ).

At this time, from the signal emitted from the control device 24 TRS terminal (B) of the fixing device (A), it is confirmed whether the unique number code and the outgoing signal, and then the transmitter (5) of the fixing device (A) is turned on (step 203). And a response signal with a unique number code (step 204), the TRS terminal (B) checks the radio line state from the reception state of the reception data processing apparatus (step 205), and the radio line state is good. In this case, the TRS terminal B transmits the subscriber line connection request signal to the fixing device A (step 206).

In addition, the fixing device (A) checks the connection state of the subscriber line and then connects the line relay (step 207, step 208), and transmits the dial tone from the PSTN exchange to the TRS terminal (B) through the wireless line (step 209), the user of the TRS terminal (B) dials for a telephone request (step 210), and the fixing device (A) transmits a DTMF dial tone coming from the TRS terminal to the subscriber line (step 211) and then a PSTN access counterpart subscriber. When there is an off hook signal from the TRS terminal B, the TRS terminal B has the same function as the radio telephone.

On the other hand, during the call, the channel status is monitored between the fixing device A and the TRS terminal B periodically, step 212, and the call is terminated and the user presses the end button of the TRS terminal (step 213). The control device 12 of the TRS terminal transmits the call termination signal to the fixing device A (step 214), and the fixing device A receiving the call ending signal cuts the line relay to disconnect the subscriber line (step In this case, the TRS terminal B and the fixing device A turn off the transmitters 5 and 25 (step 216) and then start a scanning operation (step 217).

Next, the operation of the TRS terminal in case of an incoming call in the wireless telephone mode of the present invention will be described with reference to FIGS. 3 and 5.

If you want to use as a TRS terminal and use it for a wireless telephone, the mode switching switch 19 attached to the TRS terminal B is switched to the operating mode of the wireless telephone, and the control device 12 of the TRS terminal B is a wireless telephone. A unique number code for the purpose is set, the transmission power is lowered to 10 kHz, and then a scan operation is started (step 250) to match the channel with the fixing device A.

Thereafter, when an incoming call signal is applied from the subscriber line to the line interface 23 of the fixing device A (step 251), the control device 24 of the fixing device A finds an empty channel and transmits the transmitter of the fixing device A. (25) is turned on, and when the incoming call signal with the unique number code is fired (step 253), the TRS terminal B is scanning and recognizes the incoming call signal from the fixed device A. (Step 254), the incoming call answering signal is fired together with the unique number code (step 255), and the fixing device A which receives the incoming call answering signal detects the state of the radio line from the state of the reception data (step 256). ).

At this time, when a ringing signal (Ring tone) is applied from the subscriber line 21 (step 257), the fixed device (A) transmits the incoming call signal (step 258), the TRS terminal (B) of receiving the incoming signal The control device 12 generates an incoming call signal (step 260), and then the control device 12 of the TRS terminal B transmits an off hook signal (step 261), and receives the off hook signal. Control unit 24 connects the line relay to connect the subscriber line 21 (step 262), connects the radio line (step 263), and in this situation, the TRS terminal has the same function as the wireless telephone. At the same time, the channel state is monitored while the unique number code is periodically exchanged between the fixed device A and the TRS terminal B during a call (steps 264 and 265).

On the other hand, when the call is terminated and the user presses the end button of the TRS terminal B (step 266), the control device 12 of the TRS terminal B transmits the call end signal to the fixed device (step 267), and fixes the call. The device A turns off the subscriber line 21 by disconnecting the line relay when it recognizes the call termination signal (step 268), and then transmits the call termination signal to the TRS terminal B and the fixed device A receiving the call termination signal. After turning off each transmitter (step 269), the scanning operation starts (step 270).

As described above, the present invention adds the use of a wireless telephone to the TRS terminal, thereby securing a convenient function of a wireless telephone that can be conveniently used in a home or office, as well as a special function as a mobile communication terminal that only the TRS terminal has. In addition, it is possible to maximize efficiency more effectively and to effectively use the 600-channel wireless line, so that it is possible to secure a better channel for the call quality problem caused by the minority channel of the current wireless telephone. It can contribute to improving the reliability of the system.

Claims (2)

Transmission receiving antenna 1, duplexer 2, receiver 3, frequency synthesizer 4, transmitter 5, low frequency amplifier 6, squelch comparator 7, and received data processing Device 8, PTT switch 9, speaker 10, external storage device 11, control device 12, tone generator 13, keyboard 14, LCD display ( 15), in the common frequency communication system including the transmission data processing device 16, the voice processing device 17, and the microphone 18, when the control device 12 is used as a wireless telephone, it switches to the wireless telephone mode. A terminal of a frequency common communication system (TRS), characterized in that by connecting the mode switching switch 19 of the function to perform the wireless communication with the corresponding fixed device to be used as a combination of the radio telephone and the TRS terminal. Transmitting and receiving antenna 1, duplexer 2, receiver 3, frequency synthesizer 4, transmitter 5, low frequency amplifier 6, squelch comparator 7, and receiving Data processing device 8, PTT switch 9, speaker 10, external storage device 11, control device 12, tone generator 13, keyboard 14, LCD In the control method of the common frequency communication system terminal including the display unit 15, the transmission data processing unit 16, the audio processing unit 17, the microphone 18, and the mode changeover switch 19, the mode described above. When the changeover switch 19 is switched to the radiotelephone operating mode, the control device 12 sets a unique number code for the radiotelephone use, reduces the transmission power, and scans to adjust the channel (step 200). If the user presses the send button for use as a radiotelephone, the control unit 12 emits a call signal with a unique number code. (Steps 201 and 202), and the control device 24 of the fixing device checks the unique number code and the outgoing signal from the signal emitted from the TRS terminal, and then turns on the transmitter and generates a response signal together with the unique number code. Launching (steps 203 and 204), and the TRS terminal checks the wireless line state from the reception state of the reception data processing device, and transmits the subscriber line connection request signal to the fixed device if the wireless line state is good ( Steps 205 and 206, and the fixed device checks the connection state of the subscriber line, connects the line relay, and transmits the dial tone from the PSTN switch to the TRS terminal via the wireless line (steps 207 to 209); The TRS terminal user dials for a telephone request, and the fixed device transmits a subscriber line to a DTMF dial tone coming from the TRS terminal (steps 210 and 211). Periodically exchange the unique number code between the fixed device and the TRS terminal and monitor the channel status, and when the end button is pressed, the end device transmits the call termination signal to the fixed device from the control device (steps 212 to 214). And the fixed device line relay receiving the call termination signal, and the TRS terminal and the fixed device turn off the transmitter and start a scanning operation (steps 215 to 217). Terminal control method of the.