JPS6039935A - Personal radio equipment - Google Patents

Abstract

PURPOSE:To respond selectively to only a calling from a strictly limited specific opposite station by transmitting a call signal decided as personal radio for plural number of times. CONSTITUTION:A control circuit 6 selects an idle talking channel CH, stores its CH number Ni to a memory 7; a group number A1 of an opposite station stored in the memory 7 on a call CH or an added group number Ai and the CH number Ni are transmitted from a transmitter TX1. A set number C of a counter type switching device 8 is compared with a count value (i), and when they are coincident, the channel is switched to the talking CH and talking is proceeded. In case of a special calling, the group number A1 is transmitted on the call CH and after the channel is switched to a talking CHN1, the end of call signal is transmitted immediately, the signal is added to a counter 8, the added group number Ai is transmitted by the number of times of the setting value and the state enters the talking state. In case of response, when the number is coincident with the response group number of the own station stored in the memory 7, the channel is switched into the talking CH, the mode is in standby state, the added group number transmitted in succession with the end of call signal is coincident with the response added group number stored in the memory 7, then an informing signal is transmitted and the state is brought into the talking state.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a personal radio device, and more particularly to a personal radio device equipped with a special call function that can selectively receive communications only from a further selected specific party in addition to the normal selective call by group number. .

Personal radio is a wireless communication system that can be freely used by the general public and is an extension of the conventional OB (citizen radio) radio.
MI (80 waves in Z band (1 wave for calling).

By selectively using a frequency that is not used by a third party from among the 79 communication waves, it is possible to provide a good simplex communication service with no interference with the desired partner station.

In this personal radio system, the originating radio station that wishes to make a call first selects an unused communication channel (frequency), calls the desired destination station (terminating radio station) through the paging channel, and then uses the selected communication channel. Inform the channel number. When calling a partner station using this paging channel, 5 channels are used for calling a specific partner station.
There are group calls based on digit group numbers and unspecified calls based on group numbers "ooooo" for the purpose of communicating with an unspecified number of parties. This 5-digit group number is for each radio station (wireless device)
It is not something that is uniquely assigned or registered to the user, but can be set and used by the user of the personal radio.
There is a possibility that there are other wireless stations set to the same group number within the communicable area. Therefore, even in a group call, when a call signal that calls a third party who happens to be set to the same group number causes the own station's radio to switch to the specified communication channel and an announcement signal is issued, there is no connection between the two. Telephone calls between third parties may be intercepted or intercepted, causing undue inconvenience.

The probability of such interference in calls from third parties and communication between third parties is sufficiently low when there are few users of personal radios and group calls using five-digit group numbers are used. As the number increases, so does the probability. In addition, even if the group number is changed to avoid such interference, the group number can be set freely by the user, and there are many mobile stations as well as fixed stations, and the areas in which they are used can be moved freely. You may be bothered by similar interference and calls. To eliminate this drawback, you can increase the number of digits in the group number, but it is decided that the group number should be set as a 5-digit number, and the call signal The signal configuration is also determined by technical standards, so
A device in which the number of digits has been changed cannot be certified as a device eligible for personal radio.An object of the present invention is to eliminate the above-mentioned drawbacks, and to improve the quality of personal radio by transmitting a calling signal specified as a personal radio multiple times. It is an object of the present invention to provide a personal radio device having a function of selectively responding only to calls from limited specific partner stations.

The personal wireless device of the present invention transmits a message t7.
In Th, the originating radio station that wishes to exchange selects one of the unused communication channels from one paging channel and a plurality of communication channels that are commonly assigned to a large number of radio stations, and assigns that channel number to the above-mentioned calling channel. In a personal wireless communication system used in a personal wireless communication system that transmits a message to a destination wireless station using a channel, and sends or exchanges the message using the selected communication channel, there is a system for calling, responding, and switching channels. A control unit that performs control is configured to send and respond to a normal call that selectively calls the terminating radio station by specifying a group number, and to call the terminating radio station by specifying the group number and at least one additional group number. It has a switching means for selectively switching between making and answering a special call to be selectively called, and when the sending of the special call is selected, the group number is transmitted on the paging channel, and immediately after switching to the selected call channel. A special call transmitting means for transmitting a call termination signal, -7, again transmitting at least one additional group number set and stored in advance in the same procedure as the group number, and a response to the special call is selected: 5. When the group number received on the calling channel (7) matches the preset and stored response group number of the local station (17), the selected call channel waits without issuing a disconnection notification signal. When the "-f" module number sent in the paging channel following the end of call signal matches the response additional group number of the own station that has been set and stored in advance, the notification signal is emitted and the selected It is constituted by comprising at least one of a special call response means for setting a communication channel to a communication state.

Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, in which a transmitter (T
X)1. Receiver (X)2. Transmitting microphone (MIO)3.
Speaker (SP) 4 and transmission/reception [control unit 5 that controls speech
It consists of The control unit 5 switches between transmission and reception,
Transmission/reception channel switching 2 Selection of call channel 7 Sending of a calling signal including the group number and call channel number 2 Control circuit (CONT) that controls sending of a station identification signal (ATIS signal), identification judgment of the received group number, etc. 6, a group number memo IJ (MEMO) 7 for setting and storing the group number and additional group number for calling and answering, and selecting the origination/response of normal calls by group number and special calls by group number and additional group number. Counter type switch (SW) S
It is composed of.

2 and 3 are flowcharts of the calling and answering operations of the device of the present invention, in which the group number A1 and the additional group number A
This figure shows the flow up to the start of a call when a call is made by specifying a call channel Ni with I (1≧2) and when a call is made with the above specification. First, the case of transmission will be explained with reference to FIG. When there is a request to make a call, the control circuit 6 (1) selects an unused communication channel from among the 79 commonly assigned channels and stores its channel number Ni. (il) After checking the availability of the discharge channel, enter the group number of the partner station or the group number AI set and stored in the group number memory 7 in the specified data format, and the telephone number /l/ to be used. The number Ni is sent. θ11) Here, the set value C of the counter type switch 8
The count value i of the switching counter is compared with the count value i of the switching counter, and if i=0, the communication channel is switched to the communication channel NC specified by +IV, the standby state is set, and the communication starts. In the case of a normal call, the switching device is set to C=1, and the switching counter is initially set to i=1, so that the call starts on the call channel N immediately after sending the group number A.

On the other hand, in the case of a special call, for example, O=2 is set (the number of times X of repeated sending of the call signal is 2), the group number A,
After sending +"k, (V) switches to call channel N1, sends an ATIS signal, immediately sends a call end signal, adds 1 to the attached p counter, and returns to 1).

In other words, select the idle call channel N2 and select the additional group number A preset and stored in the group number memory 7.
2 from the calling channel, and switches to the talk channel N2 and enters the talk state. When C is set to 3 or more, the procedure of transmitting the call end signal again and transmitting the added group number A is repeated, and after transmitting the last additional group number, the call state is entered.

Next, the case of a response will be explained using the code 71 shown in FIG. If the switch is set to 0-1 and response to normal calls by group number only is selected,
eii) Receive the paging signal and judge whether the sent group number tag corresponds to the response group number set by the own station, and if so, since Q and i=C. Φ111) Immediately switch to the call channel, issue a notification signal (buzzer sound and lamp display), and enter the call state.

When a response to a special call is selected, even if the received group number A1 corresponds to the own station, it is i to C.
0x) Switches to the voice channel, but no notification signal is output and the audio circuit is not connected. Then, when you receive the end of call signal,
Add 1 to the switching counter and switch to the paging channel ( ) and wait.

When a subsequent paging signal is received on the paging channel (vi
Returning to step D, if the group number Ai sent corresponds to the response additional group number set by the local station, the station switches to the call channel, and if it is 1-C, it issues a notification signal and enters the call state. In other words, in the case of a special call, only when the continuously sent group number and additional group number match the response group number and negative addition group number set by the own station, a notification signal is issued and the call state is established. enter.

When a call signal from a normal group call is received while the response to a special call is selected, and the group number corresponds to the own station, the call channel is switched by (1x), but no notification signal is issued. Set a timer here, and if the call-end signal is not received within a certain period of time (several seconds), the first standby mode will return to the state (x1).Also, even if the call-end signal is received, the call will not be called within the timer setting time. Even if the signal is not retransmitted, it is determined that the call has simply been canceled and the initial standby state is returned to the inactive state. As is clear from the above explanation, if you select the special call response iK:
Since it is possible to respond only to calls from a specific caller who specify the group number and additional group number and send out consecutively using the special call origination procedure shown in Figure 2, there is no need to be bothered by calls from unnecessary third parties. .

In the above description of the embodiment, it has been described that the switch 8 is of a counter type and can select the number of repeating ports for sending out the group number and additional group number. Effects such as a sufficient amount can be obtained. In addition, switching between normal calls and special calls can be done by setting a specific group number without manually operating the switch, and in the case of this group number, it is also possible to configure the system so that an additional group number is sent out as a special call. It is. It should be noted that since the side making the call 2 and the side receiving the call are separate wireless devices, it is not necessary for one personal wireless device to have both the sending means and the answering means for the special call. Similar effects can be obtained depending on the method of use of devices equipped with only special call originating means and devices equipped with only special call response means.As described in detail above, according to the personal radio device of the present invention, By repeatedly sending a calling signal specified as a personal radio system, it is possible to selectively respond only to calls from more specific callers than the usual 5-digit group number call, and to respond selectively to calls from unrelated callers. This has the effect of not being bothered by unnecessary calls from third parties.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a calling flowchart, and FIG. 3 is a response flowchart. 1... Transmitter (TX), 2... Receiver (R,X), 3... Transmitting microphone (MIlj),
4...Speaker (SP), 5...Control unit, 6...Control circuit (CONT), 7...
...Group number memory (MgMO), 8...Switcher (8W). Agent Patent Attorney Uchihara. f / Figure 22 Waste 53 Figure

Claims (1)

[Claims] A calling radio station that wishes to send or exchange a message selects one of the unused call channels from one paging channel and multiple call channels that are commonly assigned to many radio stations, and enters the channel number. transmitting the information to the destination radio station using the paging channel;
In a personal wireless device used in a personal wireless communication system that sends or exchanges the message using the selected call channel, a control unit that controls outgoing calls, responses, and channel switching controls the incoming call radio by specifying the group number. originating and responding to a normal call that selectively calls a station; and a special call that selectively calls the terminating radio station by specifying the group number and at least one additional group number;
has a switching means for selectively switching between calling and responding to the special call, and when the calling channel is selected to send the group number, and after switching to the selected call channel, immediately sends a call termination signal. [7] special call originating means for transmitting again the at least one additional group number set and stored in advance in the same procedure as the group number; and when a response to the special call I~ is selected, When the group number matches the response group number of the own station which is set and stored in advance, the selected call channel is switched to the call channel and stands by without emitting a switching notification signal. When the received additional group number matches the preset and stored response additional group number of one's own station, the notification signal is emitted and the selected call channel is put into a call state.Special call response A personal unembroidered garment characterized by comprising at least one of the following: