JPH07101898B2 - Communication device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device used in a telephone system or the like capable of making a call from either a master unit or a slave unit.

Conventional technology You can make a call from either the base unit or the handset,
Moreover, FIG. 3 shows a first conventional example of a telephone system capable of redialing. In the same figure, the handset 2 displays the telephone number (dial signal) of the destination specified by the keyboard 3 in the CPU 4
The CPU 4 gives the dial signal to the transmitter / receiver 5. The transmitter / receiver 5 forms a high frequency modulated signal with this signal. This modulated signal is radiated toward the base unit 1 via the antenna 6. The base unit 1 catches this with the antenna 7,
The signal is demodulated by the transmission / reception circuit 8 and given to the dialer 10 via the system controller 9. The dialer 10 sends this dial signal to the second C of the dialer 10 via the CPU interface 12.
It is taken into PU13 and given to the line interface 14. As a result, the redial signal is sent to the telephone line 15.

When making a call from base unit 1, operate keyboard 24,
Specify the telephone number of the other party. The dial signal in this case is also sent from the system controller 9 to the dialer 10 and further to the telephone line 15.

Reference numeral 16 is a dial memory, and the dial signal is stored in the memory 16. By pressing the redial request button of the keyboard 3 or 24 later, the dial signal is read from the memory 16 and sent to the telephone line 15. The stored content of the redial memory 16 is updated every time dialing is performed.

Next, FIG. 4 shows a second conventional example, in which the system controller 9 has a redial memory 17 dedicated to the master unit.
, And a redial memory 18 dedicated to the slave unit is provided so as to individually store the dial signals of the other party, and the redial memory 16 of the dialer 10 is not used.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the first conventional example, the redial memory 16 is a dialer 10.
Since it is on the side and there is only one, it is not possible to discriminate which of the master unit 1 and the slave unit 2 stores the dial signal. For example, I made a phone call on base unit 1, but since I was busy, I was waiting to redial after that,
When another person makes a call with the slave unit 2, the master unit 1 is stored in the memory 16
Since the dial signal dialed in is disappeared and the dial signal dialed in the slave unit 2 is stored, when the user of the master unit redials later, the user of the master unit 1 makes a call to an unintended place. .

On the other hand, in the case of the second conventional example, it is necessary to secure the areas of the two redial memories 17 and 18 on the system controller 9 side, and the amount of information to be stored on the system controller 9 side is correspondingly increased. It becomes less and it becomes difficult to achieve multi-functionality. In particular, when the number of slave units 2 is large, the number of redial memories is also large, which is a problem. Moreover, the redial memory 16 on the dialer 10 side is wasted because it is not used.

The present invention has been made in view of such a point, and without using the memory of the system controller of the master unit for redialing, distinguishing the master unit from the slave unit and transmitting the dial signal to the redialing memory of the dialer. An object of the present invention is to provide a communication device that can be stored.

Means for Solving the Problems In order to achieve the above object, according to the present invention, both a base unit and a handset have dials, and when a call is made from the handset, the base unit receives a dial signal from the handset and receives a telephone line. In the communication device to be mounted on, the master unit generates a selection signal for selecting a plurality of redial memories provided in the dialer and selecting the redial memory by discriminating whether or not the master unit is the one that requested dialing or redialing. A system controller, a means for fetching an input dial signal into the redial memory selected by the selection signal, and a means for fetching a dial signal from the selected redial memory and giving it to the telephone line. .

Further, the communication device of the present invention identifies a redial memory having a plurality of addresses provided in a dialer and a dial or redial memory by identifying whether a request for redial is a master device or a slave device. A system controller for generating an address signal, means for fetching an input dial signal at an address selected by the address signal, and means for fetching a dial signal from the address of the selected redial memory and giving it to the telephone line. It may be provided.

Operation With this configuration, when a call is made from the base unit, the dial signal is stored in the redial memory for the base unit,
When a call is made from the slave unit, the dial signal is stored in the redial memory corresponding to the slave unit. Also when redialing, in the case of the master unit, the dial signal from the redial memory for the master unit is extracted, and in the case of the slave unit, the dial signal is extracted from the redial memory corresponding to the slave unit. Therefore, the problem that the users of the master unit and the slave unit redial to the wrong place does not occur.

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

In FIG. 1 in which the present invention is implemented, the same parts as those of the conventional example of FIG. In this embodiment, the dialer 10 has a redial memory 20 for the master unit,
A redial memory 21 for a slave unit and a changeover switch 22 for connecting one of the memories to the second CPU 13 are provided, while the system controller 9 requests the master unit 1 to dial or redial, It has a function of identifying whether it is the slave unit 2 and outputting a selection signal. Then, this selection signal is transmitted through the line 23 to the changeover switch.
22 and controls switching of the selector switch 22.

Now, when a dial signal is input from the keyboard 24 of the master device 1, the system controller 9 identifies that this is input from the master device 1, and outputs a selection signal indicating the master device 1 to the line 23. As a result, the changeover switch 22 is set to the redial memory 20 side, and the redial memory 20 is set.
And CPU 13 are connected. In this state, the dial signal input from the keyboard 24 of the base unit 1 is transferred to the dialer 10 side through the line (data bus) 25. Dialer 10
Further, it sends this dial signal to the telephone line 15 via the line interface 14 through the CPU interface 12 and takes it into the redial memory 20 via the changeover switch 22. At this time, if the previous dial signal input from the parent device 1 is stored in the redial memory 20 last time, this is updated to the new dial signal of this time.

Even when a redial request signal is input from the keyboard 24 of the master unit 1, a selection signal indicating the master unit 1 is output from the system controller 9 to the line 23 even when a redial request signal is input. Therefore, the redial memory 20 is connected to the CPU 13 through the changeover switch 22, the dial signal stored in the redial memory 20 is taken out to the CPU 13, and sent from the CPU 13 to the telephone line 15 through the line interface 14.

Next, consider a case where a dial signal designated by the handset 2 using the keyboard 3 is radiated via the antenna 6 of the handset 2. This signal is caught by the antenna 7 of the base unit 1, demodulated by the transmission / reception circuit 8 of the base unit 1, and input to the system controller 9. In this case, the system controller 9 outputs to the line 23 a selection signal indicating that it is the slave unit 2. As a result, the changeover switch 22 connects the redial memory 21 for the slave unit to the CPU 13. Therefore,
The dial signal sent from the system controller 9 is CP
The dial signal is sent from U13 to the telephone line 15 via the line interface 14, and the dial signal is taken into the redial memory 21.

Even when the redial request is transmitted from the slave unit 2, the system controller 9 outputs the selection signal indicating the slave unit to the line 23, so that the changeover switch 22 is in a state of connecting the redial memory 21 to the CPU 13, In this state, the dial signal of the redialing memory 21 is taken out to the CPU 13 through the changeover switch 22, and the CPU 13 sends this dial signal to the telephone line 15 through the line interface 14.

In this embodiment, the dialer 10 has two redial memories 2
Although only 0 and 21 are provided, it is desirable to provide a predetermined number of redial memories for the slaves in consideration of the plurality of slaves 2.

FIG. 2 shows the dialer 10 in that case. And
In this way, redial memory 21a ... 21n for multiple slaves
When the switch is provided, the switch 22 also has a multi-contact structure. Specifically, the switch 22 is configured as an electronic circuit. in this case,
The system controller 9 is supposed to output a selection signal capable of identifying each slave.

In the above embodiment, the redial memory is individually provided, but a memory having a plurality of addresses having a relatively large capacity is prepared and the addresses are assigned to the master unit 1 and each slave unit. Alternatively, the system controller 9 may be caused to output an address signal as the selection signal.

As described above, according to the present invention, the dialing signal is stored in the redialing memory for the master unit when a call is made from the master unit, and the slave unit corresponds to when the call is made from the slave unit. The dial signal is stored in the redial memory. When redialing, the dial signal is extracted from the redial memory for the master unit in the case of the master unit, and the dial signal is extracted from the redial memory corresponding to the slave unit in the case of the slave unit. There is an effect that the condition that the user of the child device redials to the wrong place does not occur.

[Brief description of drawings]

FIG. 1 is a block circuit diagram of a telephone system in which a communication device of the present invention is implemented, and FIG. 2 is a block diagram showing a main part of another embodiment of the present invention. 3 and 4 are block diagrams of a conventional example. 1 ... Master unit, 2 ... Slave unit, 9 ... System controller, 10 ... Dialer, 20 ... Redial memory for master unit, 21,21a, 21n ... Redial memory for slave unit,

Claims (2)

[Claims] 1. A communication device in which both the master unit and the slave unit are equipped with dials, and when dialing from the slave unit, the master unit receives a dial signal from the slave unit and puts it on a telephone line, wherein the master unit is a dialer. A plurality of redial memories, a system controller which generates a selection signal for selecting the redial memory by identifying whether the master or the slave requested the dial or redial, and the selection A communication device comprising: a means for fetching an input dial signal into a redial memory selected by a signal; and a means for fetching a dial signal from the selected redial memory and giving it to the telephone line. 2. A communication device in which both the master unit and the slave unit are equipped with dials, and when a call is made from the slave unit, the master unit receives a dial signal from the slave unit and puts it on a telephone line, wherein the master unit is a dialer. A redial memory having a plurality of addresses provided in, and a system controller for generating an address signal of the redial memory by identifying whether it is a master unit or a slave unit that has requested dialing or redialing, A communication device comprising: means for fetching an input dial signal at an address selected by an address signal; and means for fetching a dial signal from the selected address of the redial memory and giving it to the telephone line. .