JPH0347784B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention enables each terminal station constituting one communication network to automatically register call requests from other terminal stations and to receive calls when the terminal station is absent. The present invention relates to a call request registration device that allows all stations that have been registered to be displayed later.

[Conventional technology]

In a system in which a plurality of terminal stations are connected via a wireless communication network that shares a frequency, a call request from one station to another station is often carried out by voice or ring tone. In this case, there is a method of automatically recording the voice etc. from the calling station so that even if the operator of the station that received the call request is absent, the call request can be known later. However, with this method, if there are a large number of call requests, it takes time to listen to the tape again, and the task of confirming the calling station is troublesome.

On the other hand, systems that also allow data communication, such as MCA (Multi Channel Access),
Since the number of the calling station is sent as data instead of voice, this can be stored and displayed.

[Problem that the invention seeks to solve]

However, there are two problems in this case. First, if the memory and display are only for one station, for example, when station B sends a call to station A, and then station C sends a call to station A, the number display at station A will change from station B to station C. The problem is that the number display for station B disappears. This is because the number display used in MCA is intended to indicate which station is currently calling.

The second point is that even if memories and displays are provided for a plurality of stations, not all stations displayed are necessarily the stations that called the own station. This is MCA
This is because each terminal station sharing a common group code can receive all signals (data via a control channel, voice signals, number data, etc. via a communication channel) from one transmitting station (transmitting station). However, the only stations that can reproduce audio from the received signal are the stations whose receiving station number data match, and the audio cannot be heard from other stations. However, only the number of the sending station is displayed. Therefore, for example A
If station B transmits to the station, and then station C transmits to station D, the display of station A will be the numbers of stations B and C (station C is not calling station A). The present invention attempts to solve the above-mentioned drawbacks by setting a data format exclusively for call requests and providing a display and memory exclusively for registering call requests.

[Means for solving problems]

The present invention is a wireless communication system that includes three or more terminal stations, and enables communication with the other party by transmitting a call request signal having receiving station data indicating the other party from each terminal station. In the above, the call request signal is in a data format including transmitting station number data of the terminal station that transmits the call request signal, and when the terminal station that received the call request signal does not perform a response operation, the non-response memory of the terminal station is stored. The transmitting station number data is sequentially stored in the display control key, and the transmitting station number data stored in the non-response memory, the order of arrival of the transmitting station number data, and the number of stored transmitting stations are displayed by operating the display control key. This feature is characterized in that it can be displayed on the call request vehicle number display.

[Effect]

By setting a data format specifically for call requests, you can identify only call requests to your own station. When receiving this call request, if a response operation cannot be made due to the absence of the operator, etc., the transmitting station number data is automatically stored in the unanswered memory of the own station. In this way, the sending station number data can be later read out from the memory and displayed on the display, and the reverse call can easily be made from the local station to the terminal station that has made the call request.

This will be explained in detail below with reference to illustrated embodiments.

〔Example〕

1 to 4 are explanatory diagrams showing one embodiment of the present invention. FIG. 1 is a block diagram of the main part of one terminal station, FIG. 2 is an example of the format of a call request signal, and FIG. 3 is a flowchart. FIG. 4 is a front view of the external appearance of the command station.

In Fig. 1, 1 is a communication device that connects the line (wireless line) and the main terminal station, 2 is a modem, 3 is an input/output circuit, 4 is a processor (CPU) that performs various controls, and 5 is a communication device that connects the CPU 4 with a predetermined one. A read-only memory (ROM) stores a program for operating in the format, and 6 is a random access memory (RAM) that stores various data. In this example, a part of RAM 6 is used as unresponsive memory.

Reference numeral 7 denotes a partner station number setting key for setting the number of the partner station with which the user wants to make a call, and is realized by, for example, a numeric keypad. Reference numeral 8 denotes a own number setting switch for setting the own number in advance, and is normally built in so that it cannot be operated from the outside. 9 is a call request key operated when requesting a call; 10 is a display 1
1 is a display movement key for sequentially selecting the contents of the RAM 6 to be displayed. The call request number display 11 is
When a call is requested, the partner station number input using the setting key 7 is displayed, and when a call is requested, the sending station number extracted from the received data is displayed.

For example, as shown in FIG. 2, the call request signal includes data D ₀ indicating a call request, sending station number data D ₁ set by the own station number setting switch 8,
It consists of receiving station number data _D2 set by the calling station number setting key 7.

FIG. 3 is a flowchart showing the operation of the CPU 4.

Figure 4 consists of multiple mobile stations and one command station.
The external appearance of the command station in the MCA system,
FIG. 3 is a front view of a front panel in which various displays are arranged on the upper stage and keys are arranged on the lower stage. 1 in the lower row
01 is the power switch, 102 is the volume volume, 1
03 is an individual call key, 104a and 104b are unresponsive memory display movement keys (display movement key 1 in Fig. 1).
0), 105 is a numeric keypad (corresponds to the partner station number setting key 7 in FIG. 1), and 106 is a correction key.

In the upper row, 107 is the calling vehicle number display (3
digit, 3 digits), 108 is the called car number display (3 digits), 1
09 is a command station non-response indicator, 110 is a station number and arrival order display (2 digits) in the unresponsive memory, 111 is a station number/arrival order indicator, and 112 is a speaker.

When the individual call key 103 is pressed, only the mobile station whose car number is displayed on the display 108 (set using the numeric keypad 105) is called.

Unresponsive memory display movement keys 104a, 104b
is used when displaying the car number in the unresponsive memory (RAM 6 in FIG. 1) on the display 108. When the right arrow key 104b is pressed, the oldest car number registered in the unresponsive memory is displayed on the display 108.
Each time you press the button, a new car number will appear on the display 108.
will be displayed. At this time, the display 110 displays the order of arrival, and the "order of arrival" side of the display 111 lights up. Press the key 104b repeatedly until the latest car number is displayed, then press it again to return to the normal display state (calling party's number when receiving a call, called party's number when making a call)
The display returns to , and the displays 110 and 111 display the number of unresponsive stations. The left arrow key 104a is used when reading in the reverse order to the above. In addition, key 10
If the buttons 4a and 104b are held down for one second or more, the display on the display 108 changes continuously.

The numeric keypad 105 is used to set the car number to be called, as described above. A correction key 106 is used to set the display on the display 108 to a clear state "---" or to correct input on the numeric keypad 105. Also, when this correction key 106 is pressed twice, the number key 10 of the car numbers in the unresponsive memory is
Car number set in step 5 (displayed on display 108)
will be deleted.

The talking car number display 107 displays the car numbers transmitted through the calling channel for a total of three cars, starting with the newest one (1) and arranging the oldest ones (2) and (3). This is a conventional car number display and has memory for three cars. This memory is updated so that the oldest car number is deleted when the fourth car sends a call, so it is not sufficient to display a missed call, and it is displayed even if the call is not sent to the main command station. It is a matter of nature. Note that the display state does not change on the control channel.

The called car number display 108 displays the following mode. The car number set using the numeric keypad 105 is displayed. When the correction key 106 is pressed, "---" is displayed. When the unanswered memory display movement key 104a or 104b is pressed, the contents of the unanswered memory (car numbers of mobile stations that have received a call request but have not responded) are displayed. In this mode, the command station non-response indicator 109 lights up to distinguish it from the mode number display. The station number and arrival order display 110 in the unresponsive memory indicates the number of unresponsive stations remaining in the memory in two digits when the station number/arrival order indicator 111 is displaying "number of stations". display and display device 111
When displaying the "order of arrival", the car number displayed on the display 108 displays the rank registered in the unresponsive memory in two digits.

Among the above configurations, display movement keys 104a, 10
4b (display movement key 10 in FIG. 1), mode of called car number display 108 (call request car number display 11 in FIG. 1), display 110 regarding unanswered memory,
111 (which can be considered as part of the display 11 in FIG. 1), etc. are relevant to the present invention. In addition,
In this example, the call request key 9 shown in FIG. 1 is provided only on the mobile station side. Therefore, the call request signal shown in FIG. 2 is sent from the mobile station to the command station or other mobile station. However, the data D ₀ indicating a call request does not necessarily need to be added independently as long as the subsequent data D ₁ +D ₂ can be distinguished from other data formats.

〔Effect of the invention〕

As described above, according to the present invention, in a wireless communication network that includes multiple terminal stations other than the own station, even if the own station receives a call request signal from another terminal station, the own station cannot respond due to the absence of an operator, etc. If the transmitting station number included in the signal is automatically stored in the unresponsive memory, the number data read from the memory will be displayed on the display so that the local station can call the corresponding terminal station. There is an advantage that it can be done.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram showing one embodiment of the present invention, FIG. 2 is an explanatory diagram showing an example of the format of a call request signal, and FIG. 3 is a flowchart of main operations.
FIG. 4 is a front view showing an example of a command station device in the MCA system. In the figure, 6 is RAM used for unresponsive memory,
7 is a partner station number setting key, 8 is an own station number setting switch, 9 is a call request key, and 11 is a call request vehicle number display.

Claims (1)

[Claims] 1. Three or more terminal stations are included, and by transmitting a call request signal having receiving station data indicating the destination of the communication from each terminal station, communication with the destination of the communication is possible. In a wireless communication system, the call request signal is in a data format including transmitting station number data of the terminal station that transmits the call request signal, and when the terminal station that received the call request signal does not perform a response operation, the terminal station's Transmitting station number data is sequentially stored in an unresponsive memory, and by operating a display control key, the transmitting station number data stored in the unresponsive memory, the arrival order of the transmitting station number data, and the stored transmission are displayed. A call request registration device characterized in that the number of stations can be displayed on a call request vehicle number display.