JPH03195240A - Cordless telephone set - Google Patents

Abstract

PURPOSE:To send a message at transfer from a slave station to a slave station by providing a transfer means recording a signal from an optional slave set and transferring a reproduced recording signal to other slave set in a master set. CONSTITUTION:When a transfer switch 14 of a slave set 10 is depressed, a control section 13 detects it to set the transfer mode and sends a command signal representing start of recording. The control section 7 receives the recording command signal to hold a telephone line and selects a changeover switch 4 from the position of a terminal (a) to a terminal (b) while acquiring the telephone line. Moreover, the control section 7 starts a recording/reproduction section 5 to bring the recording/reproduction section 5 into the recordable state. The user of the slave set 10 inputs a message desired to be sent from a microphone 16. Then the slave set 10 is hooked on. The control section 7 of the master set 1 calls the slave set 20 to give an incoming command to a control section 23 in the slave set 20.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cordless telephone comprising a base unit connected to a telephone line and a plurality of slave units each connected to the base unit by wireless communication. .

(Prior art) In a conventional cordless telephone equipped with multiple handsets, one
When transferring a call from one handset to another handset, the other handset is notified of the transfer by sending a ringing tone, etc. that is different from the normal incoming call. Ta.

(Problem to be Solved by the Invention) By the way, in such transfers between handsets, it cannot be said that the purpose has been sufficiently achieved just by making a ringing tone different from that of an incoming call. It would be convenient if a message with the contents (for example, who is calling from) could be sent.

One way to achieve this would be to make calls between handsets, but in order to achieve this, two transmitters/receivers must be installed in the handset, one for the base unit and one for the slave unit. However, there were problems in that the device needed to be equipped with a large-sized device, and it was also uneconomical.

Therefore, the inventor first provided the base unit of this type of cordless telephone with a means to record and play back a recording signal from any slave unit, and at the same time provided a means for starting the recording operation within the slave unit. We have proposed a cordless telephone that can receive the recorded signal at the destination handset and transmit a forwarded message such as ``This is a call from Mr. ___'' when transferring between handsets.

When transferring between handsets, the above-mentioned cordless telephone can send a message to the forwarding handset, so the transfer operation can be performed smoothly, but when the forwarding handset is called, the handset makes a call. There was a problem that the transfer message could not be transmitted because there was no provision for cases where the transfer message was inside.

The present invention was made in view of the actual situation, and not only can messages be transmitted when transferred from one handset to another,
It is an object of the present invention to provide a cordless telephone capable of transmitting the transfer message again after waiting for the transfer destination handset to be busy when the transfer destination handset is busy.

(Means for Solving the Problems) In order to solve the above problems, the cordless telephone of the present invention includes a base unit connected to a telephone line, and a plurality of slave units each connected to the base unit by wireless communication. A cordless telephone comprising: a playback system that records a signal from any one of the plurality of handsets into the base unit and starts a playback operation of the recorded signal in the recording and playback means; activating means; transfer means for transmitting the recorded signal played back by the reproduction activating means to another slave unit from the one slave unit; and detecting whether or not the destination slave unit is in the middle of a call at the time of transfer. and a calling signal sending means that waits for the busy state to be released when the busy detecting means detects that the transfer destination slave unit is busy, and then sends a call signal to the transfer destination slave unit. do.

(Function) Considering the case where a call is transferred from any handset A out of multiple handsets to another handset B with the above configuration,
First, the recording operation activation means provided in handset A activates the recording and playback means installed in the base unit, and records a message transferred from handset A (for example, a message such as [I'm calling from Mr. ○○). do. Thereafter, the recording and reproducing means in the base unit restarts the recording and reproducing means to reproduce the recorded transfer message. Then, the transfer message is transferred to the handset B by the transfer means, and the transferred message is sent to the user of the handset B.

At this time, if the transfer destination handset is busy, a busy detection signal is output. Based on this detection signal, the base unit waits for the busy state to be released and then sends a calling signal to the transfer destination slave unit again to connect the slave unit B to the telephone line. This makes it possible to send the transferred message again even if the message cannot be transmitted temporarily because the transferred destination handset is busy on a call.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a schematic block diagram showing the electrical configuration of a base unit and a slave unit in a cordless telephone according to the present invention. However, this embodiment has the simplest configuration in which the number of slave units wirelessly connected to a base unit connected to a telephone line is two.

In the figure, 1 is a base unit, 10.20 is a slave unit, and an outside call from a telephone line 2 directed to the base unit 1 is connected to the telephone line 2, detects an incoming call from the other party's terminal, and dials the phone. It is guided to a telephone section 3 for making calls and the like. The output of this telephone section 3 is connected to one terminal a of a changeover switch 4.

In addition, the other terminal of this selector switch 4 has a recording/
The output of the reproducing section 5 is connected, and the common terminal C is led to the transmitting/receiving section 6. Furthermore, the output of this transmitter/receiver section 6 is guided to an antenna 8 that transmits and receives signals to and from handsets A and B. Further, the recording/reproducing section 5 and the transmitting/receiving section 6 are each connected to the control section 7 so that data can be transferred in both directions.

On the other hand, in the handset 10, an antenna 11 that transmits and receives signals to and from the base unit 1 is guided to a transmitting/receiving section 12, and
This transmitting/receiving section 12 is connected to a control section 13 that controls the operation of the transmitting/receiving section 12 so that data can be transferred in both directions. Further, the control unit 13 is connected to the other terminal of a transfer switch 14 whose one terminal is connected to ground, and to the other terminal of a hook switch 15 whose one terminal is connected to ground. ing. The audio input from the microphone 16 is guided to the transmitting/receiving section 12, and the output of the transmitting/receiving section 12 is guided to the speaker 17. Note that the handset 20 also has the same configuration as the handset 10 described above.

Next, the operation of the cordless telephone with the above configuration will be explained.

First, the operation during a normal outside line call will be explained.

During an outside call, the changeover switch 4 of the base unit 1 is connected to the terminal a side, and the child 8910 is connected to the base unit 1 via both antennas 11°8.

That is, the audio signal input from the microphone 16 is transmitted from the antenna 11 via the transmitting/receiving section 12, received by the transmitting/receiving section 6 via the antenna 8 of the base unit 1, and sent to the terminal a of the changeover switch 4 and the telephone section. 3 to the telephone line 2.

Also, the audio signal from the telephone line 2 is input to the telephone section 3, transmitted from the antenna 8 via the terminal a of the changeover switch 4 and the transmitting/receiving section 6, and then transmitted to the transmitting/receiving section 12 via the antenna 11 of the handset 10. The signal is received and output from the speaker 17 as an audio signal.

In addition to a transfer switch 14 and a hook switch 15, the control unit 13 of the handset 10 is equipped with switches that a normal telephone has, such as a dial switch and a hold switch (not shown), and the user can operate these switches. When it is detected that the switch has been operated, information (digital data, etc.) corresponding to the function of the operated switch is sent to the parent l1 via the transmitting/receiving unit 12.
Telephone operations are realized by transmitting information to base unit 1 and receiving and receiving information from base unit 1.

Furthermore, by receiving and receiving information from the handset 10, the control unit 7 of the base unit 1 controls the transmitting/receiving unit 6 and the telephone unit 3 according to the information, and also receives incoming call detection information from the telephone unit 3. Controls such as calling the handset 10 are performed. Such operation is similar to a conventional cordless telephone. Also,
The control unit 7 starts the recording operation and the reproduction operation of the recording/playback unit 5 based on information from the slave device 10.

The recording/playback section 5 is composed of a normal tape recorder, a recording/playback IC, etc., and records and plays back the audio signal input from the terminal of the changeover switch 4 according to instructions from the control section 7. Switching the audio signal 4
It performs the operation of outputting to the terminal.

Note that the connection and communication between the handset 20 and the base device 1 are also the same as in the case of the handset 10 described above, so the explanation will be omitted here.

Next, a flowchart showing the transfer procedure in FIG. 2 will be used to explain the transfer operation when transferring a call from the above-described state where a call is being made between handset 10 and base unit 1 to handset 20. Refer to and explain.

When the transfer switch 14 of the handset 10 is pressed, the control unit 1
3 detects this and enters the transfer mode (step SL,
S2) Sends an instruction signal to start recording. This recording instruction signal is sent from the transmitter/receiver 12 and the antenna 11 to the controller 7 via the antenna 8 and the transmitter/receiver 6 of the base unit 1 . (Step S3). Upon receiving this recording instruction signal, the control section 7 puts the telephone line on hold and switches the selector switch 4 from terminal a to terminal S while the telephone line is captured (step 34). Further, the control section 7 starts the recording/playback section 5 and puts the recording/playback section 5 into a recordable state (step S5).

In this state, the user of the handset 10 inputs a message he wants to convey, such as "Call from handset 10", through the microphone 16. As a result, this message is transmitted from the transmitting/receiving section 12 and the antenna 11 to the parent Il.
The recording/playback unit 5 is connected through the antenna 8 of the l, the transmitter/receiver unit 06, and the terminal of the selector switch 4.
will be recorded. After that, by on-hooking the child alO and opening the hook switch 15, the control unit 13 issues a transfer instruction, and then it becomes a standby mode (step S6.S
7).

This transfer instruction signal is transmitted from the transmitter/receiver 12 and antenna 11 to the controller 7 via the antenna 8 and transmitter/receiver 6 of the base unit 1.
sent to. Upon receiving this transfer instruction signal, the control unit 7 sends a recording stop signal to the recording/playback unit 5, stops the recording operation of the recording/playback unit 5, and ends the call with the handset 10 (step S8 S9). At this time, the handset 10 enters the standby mode (step S10). On the other hand, the control unit 7 of the base unit 1 calls the handset 20 from the transmitting/receiving unit 6 and antenna 8 to the antenna 2 of the handset 20,
An incoming call instruction is given to the control unit 23 in the handset 20 (step S11). When receiving this, handset 20 determines whether or not a call is currently in progress (step 512). At this time, if a call is not in progress, the standby mode changes to the incoming call mode (2) upon receipt of a calling signal, and the ringer tone of the handset 20 is output (step 519), and the process proceeds to the next step.

On the other hand, if it is determined that the handset 20 is in a call, the control unit 23 sends a busy detection signal to the transmitting/receiving unit 22 and the antenna 2.
1 to the control unit 7 via the antenna 8 and transmitting/receiving unit 6 of the base unit 1. Then, the control unit 7 of the base unit 1 detects that the slave unit 20 is currently talking (step S13.
514).

After this, when the call on handset 20 ends and it goes on hook,
Since the handset 20 enters the standby state, the control unit 23 sends a signal indicating the standby state to the base unit 1 (step S15.516). Upon receiving this signal, the control unit 7 of the base unit 1 determines that the busy state has been released, and sends a ringing signal to the slave unit 20 to instruct the slave unit 20 to receive a call again (step S17.518). ).

When the user of the handset 20 picks up the phone in response to the incoming call signal (step 519), the hook switch 25 closes, and the control unit 23 detects this off-hook state and makes the call possible. An instruction signal indicating this is sent to base unit 1 (step 520). The control unit 7 of the base unit 1 remembers that the transfer is between the slave units 10 and 20 based on the transfer instruction signal from the slave unit 10, so upon receiving the instruction signal from the slave unit 20, the control unit 7 performs recording/playback. Instructs section 5 to reproduce. This results in
The message from the handset 10 recorded on the recording/playback section 5 is sent to terminal b of the changeover switch 4, the transmitter/receiver section 6, and the antenna 8.
The message is then transmitted to the speaker 27 via the antenna 21 and transmitter/receiver 22 of the handset 20, and the message is transmitted to the user of the handset 20. Therefore, the handset 20 that receives this message can listen to the transferred message "Call from handset 10" (step 522). Then, the playback operation of the recording/playback section 5 stops and the message is transferred. When the transmission of the message is completed, the control unit 7 of the base unit 1 detects this and switches the connection of the changeover switch 4 from terminal A to terminal A, thereby connecting the telephone line 2 and the handset 2 to
0 (step 523). This results in
Both the base unit 1 and the slave unit 20 are in standby mode for outside lines,
The handset 20 becomes ready to talk to the other party via the telephone line 2 (step S24.525).

In addition, in the above transfer operation explanation, telephone line 2 is transferred to handset 1.
Although the case of transferring from the handset 0 to the handset 20 has been described, the case of transferring from the handset 20 to the handset 10 can be performed in exactly the same manner.

(Effects of the Invention) According to the cordless telephone of the present invention, messages can be transmitted when transferring between handsets, so the transfer operation can be performed more smoothly. In addition, in order to perform this transfer operation, there is no need to have two transmitters/receivers in the child device, one for the parent device and one for the child device, so the device can be made smaller and economical. be. Furthermore, if the forwarding destination handset is busy at the time of transfer, you can wait for the call to be terminated before transmitting the forwarded message again, so you can be sure that the forwarding message is transferred to the forwarding destination. It has an excellent effect of being able to convey information to people.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram showing the electrical configuration of a cordless telephone according to the present invention, and FIG. 2 is a flowchart illustrating the procedure of transfer operation between handsets. 1... Master unit 10.20... Slave unit

Claims (1)

[Scope of Claims] 1) A cordless telephone consisting of a base unit connected to a telephone line and a plurality of slave units each connected to the base unit by wireless communication, in which the base unit contains a recording/reproducing means for recording a signal from any one of the slave units and reproducing the recorded signal; a reproduction starting means for activating a reproduction operation of the signal recorded in the recording/reproducing unit; Transfer means for transferring the recorded signal played back by the playback activation means to another slave unit from the one slave unit, and a busy detection unit for detecting whether or not the destination slave unit is in the middle of a call at the time of transfer. and a calling signal sending means for transmitting a calling signal to the transfer destination slave device after waiting for the busy state to be released when the busy detection means detects that the transfer destination slave device is busy, and within the said slave device, A cordless telephone set comprising a recording start means for starting a recording operation by the recording and playback means.