JPS5972829A - Called subscriber confirming system of communication device - Google Patents

Abstract

PURPOSE:To have a call after confirming the station of a remote side, by transmitting the own station information, call channel information and remote side station information and then having a switch to the channel corresponding to the call channel information to set a reception mode. CONSTITUTION:When an idle call channel is searched at a calling station and stored in a memory 14, an automatic switch is carried out to a call channel to set a reception state. Then a carrier detector 7 discriminates whether the call is busy or not. If the call channel is busy, the calling subscriber waits until the busy state is over. Then a digital code including own station information (ATIS) is transmitted when no carrier exists. At a called station a code detector 6 detects the digital code and the received remote side station information is compared with the OWN ATIS code stored in an ROM15. If coincidence is obtained from the comparison, the ATIS code of the called station is transmitted to the calling station via the corresponding call channel. The calling station detects the ATIS code by the detector 6 and at the same time sets a call state in accordance with the coincidence with the remote side station information stored in an RAM14.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a communication partner i-right system of a communication device, and more particularly to a communication partner confirmation system in communication systems such as amateur radio and CB (Citizen Band) radio.

Communication devices such as amateur radio and American CB radio in the Vl-IF band and tJ HF band have a system having one call channel and a plurality of call channels. When making a call, if an empty channel is found by manually searching for empty channels, Isutoshi calls the other party from the call channel by specifying this channel, and then makes a call using the specified channel. be.

In such a system, it is necessary not only to eliminate the complication of operations, but also to ensure that a call to the desired destination station can be made without fail.Therefore, the purpose of the present invention is to eliminate the complication of operations and to confirm the destination station. To provide a system for verifying and confirming the other party on a call that automatically and accurately performs the process.

The calling party confirmation method according to the present invention transmits at least the own station information, the calling channel information, and the calling party's information from the call channel, and then automatically switches to a channel corresponding to the calling channel information to set the receiving state. The present invention is characterized in that when station information from the other party's station is detected and this information matches the information from the other party's station sent from the other party, the communication becomes possible from then on.

It is also characterized in that when the station information from the other party's station and the information from the other party's station do not match, the system automatically returns to the initial expected reception state.

The present invention will be described below with reference to the drawings.

FIG. 1 is a circuit block diagram of an embodiment of the present invention, in which reception input from a transmitting/receiving antenna 1 is introduced into a demodulator 3 via a transmitting/receiving switch 2. In FIG. This demodulated output is applied to the system controller 4 to drive the speaker 5, and
A digital code signal (see FIG. 2) applied to the code detector 6 and sent from the other station (another communication device) is detected.

The system controller 4 variously controls other circuit blocks in accordance with this detection output. A carrier detector 7 is also provided to detect the presence or absence of an IF (intermediate frequency) carrier in the received signal, and the system controller similarly controls other circuit blocks based on this detection signal.

On the other hand, the audio input from the microphone 8 is applied to the modulator 9 via the system controller 4, but in this case, the outputs of the code generator 10 and the audible tone signal generator 11 are applied to the modulator 9 as necessary. and will be modulated. The code generated by the code generator 10 has the number of bits (-
The information in column F) (bottom column) is a digital code signal of a total of 120 bits. That is, the start bit consists of 15 bits and serves as information for notifying in advance the transmission of each subsequent digital information. Following this start bit, the 32-bit local ATIS (Automatic
c l”ransmitter T denti
The cation signal) code is call sign data information of the own station, and the 2-bit type code indicates the type of call mode and is information for distinguishing between simultaneous paging and individual paging. The 32-bit partner station code is call sign data information of the partner station with which a call is desired for individual calling, and the 6-bit 5-CH code indicates communication channel data. And the final 33-bit parity code is
This is digital data for parity check.

The signal from the audible tone generator 11 is, for example, a 1KH2 monotone sine wave, and is generated for one second as necessary under the control of the system controller 4.

The output of modulator 9 is transmitted from antenna 1 via switch 2. This switching device 2 is also controlled by the controller 4. A channel controller 12 is also provided, which sets the channel (frequency) of the communication device based on output control data from the controller 4, and has, for example, a PLL (phase locked loop) configuration. By making the frequency division ratio of the programmable divider of this 'PLL circuit variable according to control data from the controller 4, the VCO (voltage controlled oscillator) in the PLL
The oscillation frequency of 5- is controlled. By using this CO output as a local signal in the demodulator 3, it becomes possible to receive the channel specified by the controller 1-0-4.

Furthermore, by using this vCO output as a modulation signal in the modulator 9, it is possible to similarly transmit the channel specified by the controller 4.

The timer 13 is activated by a trigger signal from the controller 4 to count time, and the controller 4 performs a timed operation based on the timer output. Reference numeral 14 denotes a memory, which is configured as a RAM (Random Access Memory) and stores communication channels, ATIS codes of communication partner stations, and the like. Further, 15 is a ROM (read only memory) in which own station ATIS codes and the like are stored.

16 is PTT (Push t'o Ta1k)
It is a switch, and when this switch is suppressed, it becomes a transmitting state.

Reference numeral 17 denotes a calling code setting switch, which allows selection of individual and simultaneous calling modes and setting of the ATIS code of the other station. 18 is a call termination switch, and 6-L) is used to notify the system of the end of communication;
Reference numeral 19 denotes an interrupt switch for specifying an interrupt to a busy channel.

FIGS. 3(A) and 3(B) are flowcharts explaining the operation of the embodiment of the present invention, in which the connectors shown in ``A'' are connected to each other, and the connectors shown in ``A'' are also connected to each other. means. In the figure, C-CI-1 is a call channel, which is a single channel that transmits only the code signal shown in FIG. 2 for calling the other party.

S-CI-1 is a speech channel, which indicates a channel for transmitting and receiving speech, codes, and audible tones, and designates one channel among a plurality of channels.

When the power is turned on, random initial setting is first performed as a communication channel. After that] - Loubouyannelle is removed and the first expected reception is completed. In this standby state, a call is made or a judgment is made as to whether the call has been made or not, and the process proceeds to each operation.

First, the case of calling, that is, calling will be explained. The call code setting switch 17 is manually operated to set the mode and the partner station (only in the individual call mode), and each code is stored in the RAM 14. Next, P.T.
By pressing the T switch 16, a search for a free channel is automatically performed. Furthermore, this P T 1
- The switch 16 is used to switch the call during a call, and to use the above-mentioned J: empty channel search start function, but in order to distinguish between them, pressing the PTT switch during a call mode will switch to the call mode. A setting flag is output, but the flag is configured not to be output if a call is in progress, and the controller 4 determines the presence or absence of this flag and automatically selects a mode.

The automatic search for empty call channels is performed in the following steps. The channel controller 12 is controlled by the controller 4 to randomly initialize the communication channel (RAM1
At the same time, the switching device 2 operates to introduce the output of the antenna 1 to the demodulator 3, and enters the receiving state. Here, if a carrier is detected by the carrier detector 7, that channel is a busy (used) channel, and therefore a shift to the next channel is performed. If there is no carrier, the receiving state will continue for another 3 seconds, and if a carrier is detected during that time, the channel will advance again.

If no carrier is detected during the three seconds, the transmit state is switched and the audible tone generator 11 is controlled to send out a 1 KHz signal for one second. These determinations of the passage of time, such as 3 seconds and 1 second, are performed under the control of the timer 13, and the determination of the passage of time in each of the following operations is similarly controlled by the operation of the timer 13.

After one second has elapsed, the device returns to the receiving state of the communication channel, and determines the presence or absence of a received carrier for three seconds. If there is a carrier, the channel is switched again to another communication channel, and if there is no carrier, this communication channel is determined to be an empty channel and this channel is stored in the RAM 14.Such an operation is performed sequentially for each of a plurality of communication channels. 1KH per second.
2-〇- The signal is sent if the communication channel is busy, then this IKI- signal is sent to the user of the busy channel.
1z monotone signal will be received, and as a result, the receiver who received this monotone signal will be able to press the PTT switch 16 to send out the carrier, thereby searching for an empty channel. The caller will be notified that the channel is in use, and will be able to reliably search for an empty channel.

When the idle call channel is searched for and stored in the memory in this way, it is automatically switched to the call channel. Here, it is determined whether or not the call channel is in use in the receiving state by detecting the output of the carrier detector 6. If it is in use, it waits until the end of use, and when the carrier runs out, it is controlled so that a digital code including the 8 ATTS code is sent out. This digital code is of the type shown in FIG.
Empty call channel stored in 4, partner station ATIS
It includes the code, call type code, etc., and also includes the local ATIS code of =10-ROM15. After that,
Switches to the call channel and enters the receiving state, and in the case of an individual call, enters a confirmation operation with the other party's station.

In this confirmation operation, the following things are automatically done. That is, in the receiving state, the presence or absence of the detection output of the code detector 7 is checked for one second, and if the AT'IS code etc. from the other party can be confirmed, it is determined that the ATIS code of the other party is different from the ATIS code stored in the RAM 14. A match is determined. When the two match, it will start with +H and then it will be possible to shift to the talking state.

If the ATIS code of the other station cannot be received, or if this ATIS
If the TS code does not match the required ATIS code, the communication channel in the memory 14 is erased and the system automatically returns to the initial waiting state.

All of the above operations are shown in 70-JA-1 of FIG. 3(A). All of the above operations are performed automatically, eliminating the user's troublesome operability, and
This makes it possible to accurately confirm the idle channel and the other party's station, thereby significantly improving reliability.

The operation of entering the talking state will be explained based on the flowchart shown on the left side of FIG. 3(B). PT within the last 3 minutes
Operation of T switch 16 and detection 1 by carrier detector 7
If none of the 11 outputs is output (), the controller 1-4 assumes that the call has ended, erases the memory 14, and returns the system to the initial expectant state. If the PTT switch is suppressed within 3 minutes, the transmitter enters the transmitting state. When the PTT switch is pressed and released, the receiving state is entered. If the lKH2 audible tone is received in this state, it means that a confirmation tone signal is being sent to another station when searching for an empty channel. Insert it and send out the carrier. The system then informs other third party stations that the communication channel is currently in use, thereby eliminating interruptions to this channel.

During a call, a ΔTIS code is sent every minute, and this is an operation to satisfy the standards required for personal radios. If the call has ended, the switch 18 is operated and the system returns to the initial expectant state.

Next, the operation when called will be explained using the flowchart in the center of FIG. 3(B). When a code is detected by the code detector 6 in the standby state, that is, in the call channel setting state, the start bit judgment, data code reading, parity check, call mode judgment, etc. are performed, and the received ATIS code is stored in the ROM 15. Compare with the stored ATIS code. If the two match and it is an individual call, the designated call channel is set.

If the ATIS codes do not match, the system automatically returns to the initial expected state.

It is controlled to receive state at the same time as setting to call channel,
The presence or absence of a carrier is detected, and if a carrier is detected here, it is determined that it is a busy channel, and the channel returns to the initial state again. If there is no carrier, an ATTS code or the like is sent, and after waiting for a certain period of time, the call state is entered.

If the paging mode is simultaneous paging, the call mode is immediately transferred to the designated call channel 13- and the call state is entered. At this time, if a switch for rejecting all calls is provided separately, it is possible to prevent all calls from being answered.

Next, using the chart 70 shown on the right side of FIG. 3(B), a description will be given of the operation when searching for a busy channel and making an interrupt call. When the interrupt command switch 19 is operated, the communication channel becomes a randomly initialized communication channel and is switched to a receiving state. Here, the presence or absence of a carrier is determined based on the detection output of the signal carrier detector 7, and if the carrier is a negative number, the communication channel is advanced to 0 and the presence or absence of a carrier is checked again. The channel with the carrier is stored in the memory 14, the system is set to this channel, and the communication operation begins thereafter. At this time, if you press the button without transmitting, it will simply monitor the transmission and reception of that channel.

If no carrier is found after searching all channels, the system will automatically return to the initial state.

It should be noted that the numerical examples of the time shown above are not limited to these, and can be determined as appropriate in consideration of the followable range of the device and other various conditions. :1- Determining the presence or absence of noise requires a certain amount of time so as not to be sensitive to pulse noise such as ignition noise. For example, lockup time of PLI<5
01118), it is 100m s Pi! It is conceivable to make it a degree. Furthermore, the system controller 1 to roller 4, timer 13, and RAM 14 in the circuit shown in FIG. 1 are constructed using a so-called microcomputer.
Of course.

As described above, according to the present invention, in response to a call from a call channel, the called station transmits its own ATIS code and overturns it, and the communication between this code and the called station's ATIS code sent from the calling station is made. Since a match is determined and a transition is made to the talking state only when there is a match, erroneous calls and false calls can be eliminated. Further, in the case of a mismatch between the two codes, the system automatically returns to the initial state, so that monopolization of a certain channel does not occur.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram of an embodiment of the present invention, and FIG. 2 is a circuit block diagram of an embodiment of the present invention.
Transmission data signal format diagram including TTS code, Part 3
The figure is a flowchart of an embodiment of the present invention. Explanation of symbols of main parts 4... System controller 6... Code detector 7... Carrier 17 Detector 12... Channel controller 14.15・・・・・・Memory Applicant Pioneer Co., Ltd. Agent Motohiko Fujimura, Patent Attorney Continued from page 1 0 Inventor Kei Kuroda - 149, Pioneer Co., Ltd. Kawagoe Factory, 25-1 Nishimachi, Yamada, Kawagoe City

Claims (2)

[Claims] (1) A communication party confirmation method for a communication device having one paging channel and a plurality of communication channels, in which at least own station information, communication channel information, and communication partner station information are sent from the paging channel, and then the The communication channel is automatically switched to the communication channel corresponding to the communication channel information to enter the receiving state, and when station information from the other party's station is detected and this information matches the communication partner station information, the communication state is enabled from then on. A method for confirming the other party of a call in a communication device, which is characterized by: (2) The communication device according to clause 1 of the claim, characterized in that the communication device returns to a standby state when the station information from the partner station and the communication partner station information do not match. Partner confirmation method.