JPH033006Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention This invention relates to improvements in personal radio equipment, and particularly to processing when an incoming call is received while the called party is absent.

Prior Art and Problems Personal radios are configured with a specific 5-digit group code, and can communicate only with specific parties that have the same group code. For example, if A wants to communicate with B,
A and B set their personal radios to the same group code in advance. Then, when A makes a call and sends out a control signal such as a group code and channel number, B's radio receives this signal and automatically switches to the channel specified by A. You can make calls in the same way as with other wireless devices.

Incidentally, it often happens that a call is received while the called party is absent. Conventionally, a configuration has been adopted in which whether or not the own station has been called is notified by a buzzer sound, blinking of a lamp, etc. Therefore, if the called party returns to the radio, it is possible to notice this by a buzzer or the like. but,
I had no idea when the call was made.

Purpose of the invention This invention was made in view of the above circumstances.If you operate the absentee call selection switch and set the absentee call selection switch when you leave the radio, you can receive calls while you are away. To provide an absentee call display device for a personal wireless device which allows the user to know when a call is received if the call is received.

Structure of the invention The gist of this invention is that in a personal radio device that can set a group code and can transmit and receive only between the same group codes, the absentee call selection switch and the own station set with the received group code are used. a discriminating means for discriminating whether the group code is the same as the group code of the own station; The present invention provides an absentee call display device for a personal wireless device, which includes a counting means for counting the elapsed time from the time when a message is received, and an elapsed time displaying means for displaying the counted value of the counting means on a display for displaying a group code. Therefore, if you operate the absentee call selection switch and set the absentee call mode when you leave the radio, if a call arrives while you are away, the elapsed time will be displayed on the display, allowing you to know when the call will arrive. It becomes clear at a glance whether the own station has been called, and the above purpose is achieved.

Embodiment of the Invention FIG. 1 is a block diagram of essential parts showing an example of a personal radio equipped with an absentee call display device of the invention.

In the figure, 1 is a control unit composed of a microcomputer, etc., and 2 is an input device for inputting a group code, etc. When a 5-digit group code, for example, is input from the input device 2, the controller 1 The contents are displayed on the display 3 for confirmation, and the input group code is stored in the group code setting area of the internal memory. When calling a partner station, input the group code of the partner station from the input device 2 and press the call button.
As a result, the controller 1 automatically selects an available communication channel, and controls the channel number and the group code of the other station set by the synthesizer unit 7 via the transmitting unit 4, the transmitter/receiver switch 5, and the antenna 6. Send by channel. FIG. 2 is a diagram showing an example of information sent out on a control channel, in which data such as a group code is sent out following a bit synchronization signal and a frame synchronization signal. On the other hand, the called party transmits this signal to the antenna 6, transmission/reception switching unit 5,
The signal is received via the receiving section 8, and the control section 1 controls the synthesizer section 7 to automatically shift to the designated channel and connect the line. The configuration and operation described above are conventionally well known.

Further, 9 is an absentee call selection switch, and by turning it on, the absentee call reception mode can be set. This absentee call selection switch 9 is connected to the control section 1, and its on/off state can be read from the control section 1.

3 and 4 are flowcharts showing an example of a software configuration for realizing the absentee call display function of this invention, and S1 to S10 indicate each step. When the control unit 1 receives a signal through the control channel, it determines whether the group code included in the received signal matches its own group code (S
2) If they match, the absentee call selection switch 9
It is determined whether or not the switch is turned on (S3). When the absentee call selection switch 9 is in the off state, the group code is displayed on the display 3 (S4), a timer interrupt mask is set (S5), and main control routine processing such as channel setting is executed. (S8).
For example, when the group code is 1, 2, 3, 4, 5, the contents are displayed on the display 3 (a 7-segment display in the illustrated example) as shown in FIG. 5, for example.

In addition, the absentee call selection switch 9 can be set in the status S3.
When it is determined that the timer is on, a time display counter provided in the control unit 1 is cleared (S6), and then the timer interrupt mask is canceled (S7). When the timer interrupt mask is released, the control unit 1 is interrupted by an interrupt signal issued every predetermined period of a timer provided in the control unit 1, and the control unit 1
Execute the timer interrupt processing shown in the figure. In other words, each time an interrupt occurs, the contents of the time display counter are increased by 1.
The operation of counting up and displaying the contents of the counter on the display 3 is repeated (S9, S10).
Since the period at which the timer interrupt occurs is constant, the content displayed on the display 3 is proportional to the time since the call was received at the local station, and therefore it is possible to know the elapsed time. Of course, the display 3 is determined based on the count-up number of the counter and the interrupt cycle.
It is desirable to match the displayed content with the actual time. FIG. 6 is a plan view showing an example of the display 3 during time display, and the illustrated example shows 1 hour and 23 minutes. It goes without saying that the time may be displayed in hours, minutes, minutes, or seconds.
Alternatively, the display may be configured to blink to notify that the time is being displayed.

In the embodiment shown in FIG. 3, the time display counter is cleared in step S6, so if multiple calls are received while the user is absent, the elapsed time from the last call will be displayed on the display. become. It is also possible to omit this step S6, and in this case the elapsed time from the first call can be displayed.

Effects of the invention As explained above, according to this invention, if you operate the absentee call selection switch and set the absentee call display mode when you leave the radio,
If you receive a call while you are absent, the display will show when the call was received. Therefore, when the called party returns to the radio, he or she can immediately see how long it has been since the call was made, and can determine whether the called party is still at the radio or within communication range. This has the advantage of making it easier. In addition, since the control signal processing and group code display of personal radios are generally controlled by a microcomputer, the elapsed time after receiving the own station's group code is calculated by software using this microcomputer. It is possible to do this, and it is also possible to display it. Furthermore, in this invention, the display prepared in advance for group code setting is also used for time display. Therefore, the only new hardware that needs to be added is the absentee call selection switch, which has the advantage that the absentee call display function can be realized with a very economical configuration.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the main parts of an example of a personal radio equipped with the absentee call display device of this invention, Fig. 2 is a diagram showing the contents of information sent from the control channel when making a call, and Fig. 3 4 is a flowchart showing an example of the software configuration for realizing the absentee call display function of this invention, FIG. 5 is a plan view of the embodiment of the display 3 displaying the group code, and FIG. FIG. 3 is a plan view of an embodiment of the display 3 during time display; 1 is a control unit composed of a microcomputer, etc.; 2 is an input device for inputting group codes, etc.; 3
4 is a display, 4 is a transmitting section, 5 is a transmission/reception switching section, 6 is an antenna, 7 is a synthesizer section, 8 is a receiving section, and 9 is an absentee call selection switch.

Claims (1)

[Scope of utility model registration request] For personal radios that can set a group code and can transmit and receive only between the same group codes, use the absentee call selection switch to determine whether the received group code is the same as the set group code of your own station. and the absentee call selection switch sets the absentee call mode.
and a counting means for counting the elapsed time from the time when the same group code as the group code of the own station is received by the discriminating means, and an elapsed time display means for displaying the counted value of the counting means on a group code display. 1. An absentee call display device for a personal wireless device, characterized by comprising: