JPS60249443A - Personal radio machine - Google Patents

Abstract

PURPOSE:To detect a terminating call even during service by providing a receiving part for a private control channel independently and receiving always the control channel to confirm whether the terminating call signal to its own station exists or not and displaying the terminating call on a display means if the terminating call signal exists. CONSTITUTION:In case of transmission during the service operation with a service channel, the voice from a mike 5 is transmitted from an antenna 1 through a transmitting part 3. In case of reception, the signal of the other party is inputted to a receiving part 4 from the antenna 1 through a switching circuit 2 and is demodulated, and an operator hears a voice from a speaker 6. During the monitor operation, the same operation as reception is performed, and only transmission cannot be performed. A receiving part 4' for the private control channel receives always the control channel even during this operation, and the control signal is sent to a control part 7, and it is confirmed whether its own station is called or not by collation. If the group number of the received control signal coincides with the group number of its own station, the terminating call is displayed on a display means 8.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a personal radio device having a function of displaying the presence or absence of a call to its own station via a control signal.

Conventional configuration and problems thereof FIG. 1 is a system diagram of a conventional personal radio device. 1 is an antenna, 2 is a transmission/reception switching circuit for the antenna, 3 is a transmitter, and 4 is a receiver. Further, 5 and 6 are transmitting sections 3. A microphone and a speaker are respectively connected to the receiving section 4, and 7 is a control section for adding a control signal for line connection to the transmitting section 3. At the time of reception, it is checked whether the received control signal is a call to the own station or not. This is a control unit for making decisions. FIG. 2 is a diagram of the station's communication system.

The operation of the personal MiK configured as described above will be described below. The personal radio uses an automatic line connection system that automatically connects the call channel through the control device13.
For example, when station A tries to call station B, station A's side (
In this case, radio waves are transmitted from antenna 1 on the transmitting side. This radio wave is modulated by a control signal from the control unit 7, which is a control signal. The control signal includes the group number of the B station (receiving side in this case), the communication channel number designated for the B station, and the like. On the other hand, on the B station side (receiving side in this case), during standby, the receiving unit 4 always receives the control channel, and the control unit 7 checks whether the signal matches the group number of the own station (B station). and the received group number is your own station (station B).
When it matches, it switches to the designated □ call channel number of station A. At the same time, on the A station side (in this case, the transmitting side), after sending the control signal, the system switches to the speech channel and connects the speech line. Furthermore, the monitor operation will be explained. The monitor operation is an operation in which all communication channels are randomly received by the receiver 4, and at that time, no transmission can be made from the monitor side. However, if the group number of the control signal received while monitoring happens to match the group number on the monitor side, you can send it from the monitor side as well and listen to what the other person is saying.

However, in the above configuration, even if there is a call signal from a third party to the own station, the radio wave cannot be received while on the call channel, that is, during a call or while monitoring. The problem was that it was impossible to know, let alone know.

Purpose of the Invention The purpose of the present invention is to catch a call signal from a third party on a call channel, during a call, or even during monitoring, and to detect whether the signal matches the group number of the own station. For example, it is an object of the present invention to provide a partial radio device that can display information using a display means.

Composition of the Invention The personal radio device of the present invention is a partial wireless PA in which a circuit is connected through a control channel and a conversation is made through a voice channel, and the personal wireless device of the present invention is capable of continuously transmitting information even when recording or monitoring is in progress in the voice channel. A receiving section dedicated to the control channel for receiving the control channel is provided separately, and the system is configured to check the presence or absence of an incoming call signal to its own station, and to display the incoming call on the display means when there is an incoming call signal. This is what I did. For example, when stations A and B are talking, when station 0 sends a call signal to station A or B, station A or B, which catches the signal, can close the current call or ( This feature allows you to hold the RI and talk to 0 stations.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 3 shows a circuit block diagram of a personal wireless device according to an embodiment of the present invention. 1 is the antenna,
2 is an antenna transmission/reception switching circuit, 3 is a transmitter, 4 is a receiver, 4' is a control channel dedicated receiver, 6 is a microphone, 6
is a speaker, 7 is a transmitter 3. A control section 8 that controls the receiving section 4 and the control channel dedicated receiving section 4' is a display means for notifying a call signal from a third party.

The operation of the personal wireless device of this embodiment configured as described above will be described below.

When transmitting a call during a call operation on a call channel, the sound from the micro is transmitted from the antenna 1 through the transmitter 3. Also, when receiving, the signal from the other party is transferred from antenna 1 to switching circuit 2.
The signal passes through the receiver 4 and is demodulated, and the sound can be heard from the speakers. The monitor operation is the same as when receiving, only sending is not possible. Even during such an operation, the control station dedicated receiving section is constantly receiving the control channel, and the control signal is sent to the control section 7, where it is checked whether or not there is a call to the own station. When the group number of the received control signal matches the group number of the own station, it is displayed on the display means 8.

As described above, according to the present embodiment, by separately providing the receiving section 4' exclusively for the control channel, a function is added to the personal radio that allows the personal radio to always know whether there is a call to its own station even during a call or monitoring. be able to.

In the above embodiment, the display means is used, but the display means is LE.
D display, liquid crystal display, audio display, etc. are generally considered. Also, instead of providing a separate display means, the speaker 6
It is also possible to use .

Effects of the InventionAs is clear from the above explanation, the present invention has a control system,
A separate receiving unit is provided exclusively for the mobile station, and the system is configured to constantly receive the control channel, check whether there is an incoming call signal for the own station, and when there is an incoming call signal, the display means displays the incoming call. , Convenient functions that allow you to check the call display for your own station, close or hold (temporarily put on hold) the current call operation, and make it possible to talk to a third party even when you are talking or monitoring. There are excellent effects that can be obtained.

[Brief explanation of drawings]

FIG. 1 is a system diagram of a conventional personal radio, FIG. 2 is a communication system diagram of a station, and FIG. 3 is a circuit block diagram of a personal radio according to an embodiment of the present invention. 1...Antenna, 2...-Antenna transmission/reception switching circuit, 3...Transmission section, 4...Reception section,
4'...Control channel exclusive reception unit, 5...Microphone, 6...Speaker, 7...Control unit, 8...Display means. Name of agent: Patent attorney Toshio Nakao and one other person
1 Figure 2

Claims (1)

[Claims] The control channel is used to connect a line and the call channel is used to make calls, and the control channel is dedicated to always receive control channel messages even when the call channel is in use or monitored. A receiver is installed separately to check whether there is an incoming call signal to the own station,
A personal radio device characterized in that when there is an incoming call signal, the display means displays the incoming call.