JPH06291831A - Cordless telephone system and portable telephone system - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a cordless telephone device capable of recording the ICM even when the slave unit deviates from the communication range with the master unit and protecting the privacy of the recorded ICM. And [Structure] Connected to a telephone line and connected to a plurality of slave units
, Which has a wireless transmission unit and a wireless reception unit corresponding to the slave unit 18 and has a one-to-one correspondence with the slave unit 18; For box 20 to IC
A master unit 19 configured to send M, a wireless receiver unit and a wireless transmitter unit that communicate with the wireless transmitter unit and the wireless receiver unit of the master unit 19, and a slave unit 18 having a microphone and a speaker,
The slave unit 18 is provided with the recording / playback unit 5 for recording the ICM transferred from the box 20 of the master unit 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone device and a portable telephone device having an answering machine function and capable of remote communication.

[0002]

2. Description of the Related Art Conventionally, an answering machine which sends a response message (hereinafter referred to as OGM) in response to an incoming telephone call and records an incoming message (hereinafter referred to as ICM) from the other party of the telephone during absence. There is a telephone device. In addition, there is a cordless telephone device configured by a cordless telephone device that wirelessly communicates with a parent device connected to a telephone line. Among such cordless telephone devices, one cordless telephone device has a plurality of cordless handsets. There is also a multi-child device.

Further, in recent years, a cordless telephone device with an answering machine function, which is a combination of such an answering machine device and a cordless telephone device, has become popular.

The structure of a conventional cordless telephone device will be described below. FIG. 4 is a block diagram showing the configuration of a conventional cordless telephone device. In FIG. 4, the cordless telephone device is composed of one child device 1 and a parent device 2, and each of the child device 1 and the parent device 2 is within a certain distance (100 to 150).
Remote communication is possible in m).

First, the slave unit 1 side will be described. 3 is a transmitter, 4 is a receiver, the transmitter 3 is an electret condenser microphone or a dynamic microphone, and the receiver 4 is a speaker. The handset 1 is provided with a recording / playback unit 5 as an example of a recording means having an answering machine function capable of recording and playing back an ICM answering machine even at a location remote from the base unit 2. The recording / playback unit 5 is an answering machine. It is composed of a voice recording / playback LSI (semiconductor integrated circuit) for recording and reproducing and a memory for recording a signal obtained by converting a voice signal into a digital signal by this LSI. The control unit 6 which is responsible for the overall control of the child device 1 includes a CPU (central processing unit), a ROM
(Read-only memory), RAM (random access memory), PIO (parallel input / output unit), etc., and controls the telephone and recording / reproducing, and a display unit 7 including liquid crystal, light emitting diode, etc. To display incoming calls, normal mode, and answering machine mode. Reference numeral 8 is a wireless transmission unit that converts a voice signal into a radio wave and transmits the radio wave. Reference numeral 9 is a radio reception unit that receives the radio wave, detects and demodulates the voice signal, and extracts the voice signal.
Reference numeral 10 denotes an antenna for transmitting and receiving between the handset unit 1 and the base unit 2, and the antenna 10 usually uses a helical antenna or the like for downsizing. Reference numeral 11 is a battery as a power source, and 12 is an operation unit for setting a normal mode, an answering machine mode, and the like.

Next, the base unit 2 side will be described. Reference numeral 13 is a control unit which is responsible for overall control of the base unit 2, and 14 is a telephone line.
Reference numeral 15 denotes a wireless reception unit, which receives communication from the slave unit 1 with the antenna 16 and converts it into a voice signal, and then transmits it to the telephone line 14. The antenna 16 is composed of a helical antenna or the like, similar to the antenna 10 on the side of the cordless handset 1. Reference numeral 17 denotes a wireless transmission unit, which converts an audio signal from the telephone line 14 into an electric wave and then transmits the electric wave to the handset 1 side via the antenna 16.

The operation of the cordless telephone device configured as described above will be described below. First, when an incoming call is received from the telephone line 14, the base unit 2 detects it by the control unit 13 and captures the telephone line 14, and sends an incoming signal from the wireless transmission unit 17 to the handset 1 via the antenna 16. . Next, when the wireless receiving unit 9 detects an incoming signal via the antenna 10 of the handset 1, the speaker of the receiving unit 4 outputs a bell sound. When the handset 1 is set to answering machine mode,
After ringing a predetermined number of times, the handset 1 goes off-hook, outputs the prerecorded OGM from the recording / playback unit 5, and then outputs a single sound notifying the other party of the recording state, Start recording ICM. On the other hand, the base unit 2 detects whether or not the other party hangs up, and determines whether or not the other party hangs up by detecting, for example, the polarity reversal or the silent state of the telephone line 14. Next, the ICM recorded by the recording / playback unit 5 is the operation unit 1 of the child device 1.
Playback can be performed by operating 2 to enter playback mode.

[0008]

However, in the configuration of the conventional cordless telephone device as described above, the ICM sent to the handset 1 is recorded in the handset 1 and is effective in protecting privacy. However, since only the cordless handset 1 side is equipped with an answering machine function, if it deviates from the communication range with the base unit 2 due to necessity, communication with the base unit 2 is inevitably made impossible, and an answering machine is only available. Phone function is useless.

On the contrary, if the base unit 2 side is provided with an answering machine function, even if the handset unit 1 deviates from the communication range with the base unit 2, the ICM sent to the base unit 2 side to the handset unit 1. Although the ICM can be recorded, this time all the ICM sent to the handset 1 is played back on the base 2 side, so it may be heard by a third party, and it is difficult to protect privacy. I had a problem.

In addition, it has been demanded that the cordless telephone device itself has its communication range greatly expanded.

The present invention solves the above problems, enables the ICM to be recorded even when the slave unit deviates from the communication range with the master unit, and protects the privacy of the recorded ICM. The purpose is to provide.

[0012]

In order to achieve this object, a cordless telephone device of the present invention is connected to a telephone line and has a wireless transmission unit and a wireless reception unit for a plurality of slave units. A master unit configured to record the ICM once in a box which corresponds to one-to-one and also serves as a buffer, and sends the ICM from the box to a slave unit within a communicable range, and a wireless transmission unit of the master unit. A wireless receiver and a wireless transmitter that communicate with the wireless receiver, a slave unit having a microphone and a speaker are provided, and the slave unit is provided with a recording / playback unit that records the ICM transferred from the box of the master unit.

Further, by switching the call frequencies of the wireless transmitter and the wireless receiver of the slave, the slave can communicate with both the master and the public base station.

[0014]

With this configuration, in a short distance based on the base unit, the answering machine function of the handset or the base unit can be utilized regardless of whether it is inside or outside the communication range of the cordless telephone device, and the public base station can be used at a long distance. Since the answering machine function of the handset can be used via
Can record commercials. In addition, the privacy of the ICM recorded in the master unit can be protected by using the box that has a one-to-one correspondence with the slave unit.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. However, the same parts as those of the conventional example are designated by the same reference numerals, and a duplicate description will be omitted. Further, although a plurality of slave units will be described, the number of slave units may be one.

FIG. 1 is a conceptual diagram of a cordless telephone device according to one embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of the cordless telephone device according to one embodiment of the present invention, and FIG. It is a block diagram which shows the structure of the public base station corresponding to the cordless telephone apparatus in an Example.

First, the outline of the present invention will be described with reference to FIG. In FIG. 1, the cordless telephone device includes a plurality of cordless handsets 1.
8 and the base unit 19. By switching the frequency, the handset 18 can be used as a cordless telephone device at a short distance with respect to the base device 19 and as a mobile telephone device at a long distance. Each slave 18 has a memory for recording the ICM in the recording / reproducing unit 5, and the master 19 has a mail box 21 having the same number of boxes 20 as the slaves 18. Each box 20 has a one-to-one correspondence with the cordless handset 18, and does not accept any access other than the access from the cordless handset 18 with the personal identification number.

When the handset 18 is within the communication range, if the handset 18 is in the normal mode, the handset 19 receives the received ICM.
Is once stored in the box 20 and then transferred to the child device 18 to be output as voice from the speaker of the child device 18 so that mutual communication is possible. When the child device 18 is in the answering machine mode, the parent device 19 sends the OGM 22 from the mailbox 21. Then, after storing the received ICM in the box 20, the ICM is transferred to the slave unit 18 and stored in the memory of the recording / reproducing unit 5.
M is recorded, and “message is present” is displayed on the display unit of the child device 18. The recorded ICM can be reproduced as sound from the speaker by operating the operation unit to set the reproduction mode.

When the child device 18 is out of the communication range, the parent device 19 temporarily stores the received ICM in the box 20, and then maintains the same state until the child device 18 returns to the communication range. When the device 18 returns within the communication range, it is transferred to the child device 18. The ICM transferred to the child device 18 is
Regardless of whether the mode setting of the handset 18 is the normal mode or the answering machine mode, the ICM is recorded in the memory of the recording / playback unit 5 in any case, and the message “message is present” is displayed on the display unit of the handset 18. Is displayed. The recorded ICM can be reproduced as sound from the speaker by operating the operation unit to enter the reproduction mode.

The cordless handset 18 can also be used as a portable telephone device by switching the frequency. If the handset 18 is set to the normal mode, the handset 18 outputs a ringing tone in response to a call from the telephone station, and if a handset operation is performed on the handset 18 side, mutual call can be made.

If the handset 18 is in the answering machine mode, the OGM previously recorded in the memory of the recording / playback unit 5 is sent out, and then the message of the caller is sent to the memory of the recording / playback unit 5 of the handset 18. The message is recorded and the message “message present” is displayed on the display unit of the child device 18. The recorded ICM can be reproduced as sound from the speaker by operating the operation unit to set the reproduction mode.

The cordless handset 18 can also be used in place of a tape recorder. When the operation unit of the handset 18 is operated to the recording mode, the voice input from the microphone of the handset 18 is recorded in the memory of the recording / playback unit 5, and the speaker is set by operating the operation unit to the reproduction mode. It can be output as voice.

Details of the cordless telephone device according to one embodiment of the present invention will be described below with reference to FIGS.

In FIG. 2, the cordless telephone system is composed of a plurality of slaves 18 and a master 19, and each slave 18 and the master 19 are within a certain distance (100 to 1).
Remote communication is possible at 50 m).

First, the slave unit 18 side will be described. 3 is a transmitter, 4 is a receiver, the transmitter 3 is an electret condenser microphone or a dynamic microphone, and the receiver 4 is a speaker. This child machine 18
Is equipped with a recording / playback unit 5 as an example of a recording means having an answering machine function capable of recording and playing back an answering machine of an ICM even in a place away from the base unit 19. The recording / playback unit 5 records or plays back an answering machine. LSI for voice recording and playback, and this L
It is composed of a memory for recording a signal obtained by converting an audio signal into a digital signal by SI. R in the memory of the recording / playback unit 5
Using an AM card enables large-capacity recording. For example, if you use 8MB RAM card, I
Recording of CM is possible. The control unit 6 which is in charge of the overall control of the child device 18 is composed of a CPU, a ROM, a RAM, a PIO, and the like. It controls and displays incoming calls, normal mode, answering machine, recording mode, etc. Reference numeral 8 is a wireless transmission unit that converts a voice signal into a radio wave and transmits the radio wave. Reference numeral 9 is a radio reception unit that receives the radio wave and detects and demodulates the voice signal to extract a voice signal. The antenna 10 is usually a helical antenna or the like for miniaturization. Reference numeral 11 is a battery as a power source, and 23 is an operation unit for switching frequencies of the cordless telephone device and the mobile telephone device and setting a normal mode, an answering machine mode, a recording mode, and the like. The child device 18 is the operation unit 2
By operating 3 to switch the frequency, the base unit 19
It can be used as a cordless telephone device at a short distance and a mobile telephone device at a long distance. The slave 18 has the same configuration as the conventional example except for the operation unit 23.

Next, the master unit 19 side will be described. Reference numeral 13 is a control unit which is responsible for overall control of the base unit 19, and 14 is a telephone line. Reference numeral 15 denotes a wireless reception unit, which receives the communication from the child device 18 with the antenna 16 and converts the communication into a voice signal, and then the telephone line 1
Send to 4. The antenna 16 is the antenna 1 on the child device 18 side.
Like 0, it is composed of a helical antenna or the like. 17
Is a wireless transmission unit, which converts an audio signal from the telephone line 14 into an electric wave, and then transmits it to the slave unit 18 side via the antenna 16. Reference numeral 21 denotes a mail box, and this mail box 21 stores a plurality of boxes 20 that correspond to the slaves 18 in a one-to-one correspondence and an OGM 22 that is transmitted in response to an incoming call in the telephone in the answering machine mode. . Normally, the box 20 functions as a buffer for the memory mounted in the recording / reproducing unit 5 of the paired slave unit 18, and if the slave unit 18 is within the communication range, the data in the box 20 is transmitted to the antenna 1.
The data is transferred to the recording / reproducing unit 5 of the child device 18 via 6, and if the child device 18 is out of the communication range, the data is stored in the box 20 until it returns to the communication range. Here, from the viewpoint of privacy protection, each box 20 does not accept any access other than the access from the paired cordless handset 18 with the personal identification number.

Next, a case where the base unit side is a base station, especially a public base station will be described. Currently, as a public base station, a wireless communication means is added to a public telephone so that a cordless telephone device can make a call from a cordless telephone device near a public telephone. There has been proposed a personal handy telephone device in which a large number of public base stations are arranged and a call and an incoming call can be mutually made between the public base station and a cordless telephone device slave unit. Hereinafter, such a public base station will be described. However, since it is difficult to separate the cordless telephone device and the mobile telephone device in the configuration of the cordless handset when these telephone devices are used, the cordless telephone device is used to explain the cordless telephone device. Instead of the description of both the telephone device and the mobile telephone device.

In FIG. 3, reference numeral 25 is a control unit which is responsible for overall control of the public base station 24, and 26 is a telephone line. Reference numeral 27 denotes a wireless reception unit, which receives communication from the child device 18 with an antenna 28, converts it into a voice signal, and then transmits it to the telephone line 26. Reference numeral 29 denotes a wireless transmission unit, which converts a voice signal from the telephone line 26 into an electric wave, and then transmits it via the antenna 28.
Send to 8 side. The wireless transmission unit 29 communicates with the child device 18 at a frequency different from that of the parent device 19.

The wireless transmitter 8 and the wireless receiver 9 of the child device 18
By providing a means for switching the call frequency, for example, a PLL (Phase Lock Loop) circuit, the handset 18 can communicate with both the base unit 19 and the public base station 24.

The operation of the cordless telephone device configured as described above will be described below. First, when there is an incoming call from the telephone line 14 of the parent device 19, the control unit 13 detects it and captures the telephone line 14, and determines whether or not the child device 18 is within the communication range. The parent device 19 constantly sends a signal to the child device 18 at a rate of about once per second to check whether the child device 18 is within its communication range.
When the reply from 8 is interrupted, it is determined that it is out of the communication range until the reply is restarted next time. When the signal from the master device 19 is lost, the slave device 18 determines that the communication range with the master device 19 is out, and displays "out of communication range" on the display unit 7.

If the child device 18 is within the communication range, the parent device 19
Determines whether the setting mode of the handset 18 is the normal mode or the answering machine mode.

When the child device 18 is in the normal mode, the parent device 19
Sends an incoming signal from the wireless transmitter 17 to the slave 18 via the antenna 16. When the wireless receiver 9 detects an incoming signal via the antenna 10 in the handset 18, a bell sound is output from the speaker of the receiver 4 to notify the user of the incoming call.
However, if the user has turned down the volume of the bell sound, the bell sound indicating the incoming call may not be heard in a noisy place. As a countermeasure for this, a message "Incoming call" is displayed on the display unit 7 together with the output of a bell sound to notify the user of the incoming call, and the user is notified by blinking the light emitting diode. When the child device 18 is in the off-hook state, the parent device 19 once stores the received ICM in the box 20 and then transfers the ICM to the child device 18 through the antenna 16 so that mutual communication is possible.

By the way, the cordless handset 18 is intended to be carried at all times. For example, if a telephone call is suddenly received during an important conference, it is difficult to respond because the telephone cannot be answered. I have something to do. In such a case, it is possible to record the ICM by operating the operation unit 23 of the cordless handset 18 to switch the setting mode from the normal mode to the answering machine mode.

When the handset 18 is in the answering machine mode, the handset 19 makes an off-hook state after ringing a predetermined number of times, and is stored in the mailbox 21, for example, "I am absent now. After the sound, please tell us your name and requirements. "After outputting OGM22, a single beeping sound is output to notify the other party that it is in a recording state, and a specific box corresponding to the handset 18 is output. The received ICM is stored in 20. At the same time, the base unit 19 detects whether or not the other party hangs up. For example, by detecting polarity reversal or silence of the telephone line 14, it is determined whether or not the other party hangs up. Stop ICM recording.

Next, the ICM recorded in the specific box 20 of the mailbox 21 is automatically transmitted via the antenna 16 of the master 19 and the antenna 10 of the slave 18 to the slave 18.
And is recorded in the memory of the recording / reproducing unit 5. Cordless handset 18
Displays "There is a message" on the display unit 7, and informs the user by blinking the light emitting diode. The recorded ICM can be reproduced as voice from the speaker of the earpiece 4 by operating the operation unit 23 of the slave 18 to enter the reproduction mode.

When the child device 18 is out of the communication range, the parent device 19 temporarily stores the received ICM in the box 20 and then maintains the same state until the child device 18 returns to the communication range. When the handset 18 returns to the communication range, the ICM recorded in the specific box 20 of the mailbox 21 does not matter whether the handset 18 is set to the normal mode or the answering machine mode. In any case, the data is automatically transferred to the child device 18 via the antenna 16 of the parent device 19 and the antenna 10 of the child device 18 and recorded in the memory of the recording / reproducing unit 5. After that, the ICM recorded in the base unit 19
Is erased. The cordless handset 18 displays "Message is present" on the display unit 7, and informs the user by blinking the light emitting diode. The recorded ICM can be reproduced as voice from the speaker of the earpiece 4 by operating the operation unit 23 of the slave 18 to enter the reproduction mode.

By operating the operation unit 23 to switch the frequency from the frequency band of the cordless telephone device to the frequency band of the portable telephone device, the handset 18 can be used as a portable telephone device. When the frequency is switched from the frequency band of the cordless telephone device to the frequency band of the mobile telephone device, the telephone number of the cordless handset 18 is inevitably switched from the cordless telephone device telephone number to the mobile telephone device telephone number.
However, if the exchange of the central office transfers the incoming call to the telephone number of the cordless telephone device to the telephone number of the mobile telephone device via the public base station 24 in response to the instruction from the slave unit 18, From the other party's side, it is exactly the same as calling the base unit 19 of the cordless telephone device. The call transferred by the exchange of the telephone station is transmitted to the handset 18 via the wireless transmission unit 29 of the public base station 24 and the antenna 28.

If the slave unit 18 is in the normal mode, the slave unit 18
When the wireless reception unit 9 detects an incoming signal through the antenna 10, the bell sound is output from the speaker of the reception unit 4 and "Incoming call" is displayed on the display unit 7, and the light emitting diode blinks to be used. Notify the person of the incoming call. When off-hook, the handset 18 outputs the caller's voice as a voice from the speaker of the receiving section 4 and puts them in a state where they can talk with each other. If you cannot help answering during a meeting,
By operating the operation unit 23 of the cordless handset 18 to switch the setting mode from the normal mode to the answering machine mode, the ICM
It becomes possible to record.

When the handset 18 is in the answering machine mode, the handset 18 is in the off-hook state after receiving the bell signal a predetermined number of times, and is recorded in advance in the memory of the recording / reproducing section 5, for example, "just leave me now. Please output the beeping sound followed by your name and requirement. "After outputting the OGM, a single beeping sound is output to notify the other party that the recording is in progress, and the received ICM is displayed. The data is recorded in the memory of the recording / playback unit 5. At the same time, the cordless handset 18 detects whether or not the other party hangs up the telephone, and judges whether or not the other party hangs up by detecting, for example, a silent state, and when the call ends, recording of the ICM is stopped. Cordless handset 1
The display 8 displays "message present" on the display unit 7, and informs the user by blinking the light emitting diode. The reproduction of the recorded ICM is performed by the operation unit 23 of the child device 18.
Can be reproduced as voice from the speaker of the receiving section 4 by operating the to enter the reproduction mode.

The cordless telephone device can be used as a memo or as a message board. Hereinafter, a method of utilizing it will be described.

When a memo is required, the cordless handset 18 can be used instead of the tape recorder. When the operation unit 23 of the child device 18 is operated to set the recording mode, the child device 1
The voice input from the microphone of the transmitter section 8 is recorded in the memory of the recording / reproducing section 5. At the time of reproduction, by operating the operation unit 23 to enter the reproduction mode, it is possible to output as sound from the speaker of the earpiece unit 4.

When specific users among the users of the child device 18, for example, the user A wants to send a message to the user B, the mail box 21 can be used as a message board as follows.

First, the operation unit 23 is operated to operate the user A.
Is a user A of the mailbox 21 from his own child device 18
The message is blown into the corresponding box 20. Next, the operation unit 23 is operated again to transfer the message message in the box 20 corresponding to the user A to the box 20 corresponding to the user B. Box 20 for each user
Does not accept anything other than access accompanied by a personal identification number from the paired cordless handset 18 when transferring the contents of the box 20 to the cordless handset 18, but when receiving information from another box 20, such There are no restrictions. The box 20 corresponding to the user B, which has received the message from the box 20 corresponding to the user A, performs the following correspondence depending on whether or not the child device 18 of the user B is within the communication range with the parent device 19.

When the handset 18 is within the communication range, the box 20 corresponding to the user B is automatically operated in any case regardless of whether the handset 18 is set to the normal mode or the answering machine mode. Then, the message is transferred to the child device 18 via the antenna 16 of the parent device 19 and the antenna 10 of the child device 18. Then, the child device 18 records the message message in the memory of the recording / reproducing unit 5, displays “Message present” on the display unit 7, and informs the user B of that fact by blinking the light emitting diode. The recorded message message can be reproduced as voice from the speaker of the earpiece 4 by operating the operation unit 23 to enter the reproduction mode.

When the cordless handset 18 is out of the communication range, the box 20 corresponding to the user B maintains the same state until the cordless handset 18 of the user B returns to the communication range. When the cordless handset 18 returns within the communication range, the message message recorded in the box 20 corresponding to the user B is
Regardless of whether the mode setting of the handset 18 is the normal mode or the answering machine mode, the handset 18 is automatically connected to the handset 18 via the antenna 16 of the handset 19 and the antenna 10 of the handset 18 in either case. The data is transferred and recorded in the memory of the recording / reproducing unit 5. The cordless handset 18 displays “Message is present” on the display unit 7, and the user B
Let us know. The recorded message message can be reproduced as voice from the speaker of the earpiece 4 by operating the operation unit 23 of the slave 18 to enter the reproduction mode.

In the above description, the case where the main unit 19 side is equipped with the mail box 21 as an example of the recording means has been mentioned, but when the main unit 19 side is not equipped with the recording means, the main body 19 side is described. Description from mailbox 21
The description up to now can be applied by deleting both the part that is involved with and the part where the child device 18 is outside the communication range of the parent device 19.

[0047]

The cordless telephone device of the present invention is connected to a telephone line and has a wireless transmission unit and a wireless reception unit for a plurality of slave units, and has a one-to-one correspondence with the slave units and also serves as a buffer. A master unit configured to temporarily record the ICM in a responsible box and send the ICM from the box to a slave unit within a communicable range, a wireless reception unit that communicates with a wireless transmission unit and a wireless reception unit of the master unit, and A slave unit having a wireless transmission unit, a microphone and a speaker was provided, and the slave unit was provided with a recording / playback unit for recording the ICM transferred from the box of the master unit.

Further, by switching the call frequencies of the wireless transmitter and the wireless receiver of the slave, the slave can communicate with both the master and the public base station.

With this configuration, in the short distance with respect to the base unit, the answering machine function of the handset or the base unit can be utilized regardless of whether it is inside or outside the communication range of the cordless telephone device, and as a mobile phone in a long distance. Since the answering machine function can be used by using the machine, the ICM can be recorded in any case regardless of the distance. Further, since the ICM recorded in the master unit is erased after being transferred to the slave unit, the privacy of the ICM recorded in the master unit can be protected. In addition, the use of the box corresponding to the slave unit in a one-to-one relationship can further enhance the protection of the privacy of the ICM recorded in the master unit.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a cordless telephone device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a cordless telephone device according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a public base station corresponding to a cordless telephone device according to an embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a conventional cordless telephone device.

[Explanation of symbols]

 5 Recording / reproducing unit 18 Slave device 19 Master device 20 Box 21 Mailbox 22 OGM 23 Operation unit 24 Public base station 25 Control unit 26 Telephone line 27 Radio receiver unit 28 Antenna 29 Radio transmitter unit

Claims (8)

[Claims] 1. A wireless transmission unit and a wireless reception unit for a slave unit, which are connected to a telephone line, and a recording unit for recording a voice transmitted from the telephone line, and are configured to send a message to each of the slave units. A recording means for recording a voice signal from the master unit in the slave unit, which includes a master unit and a slave unit including a wireless reception unit and a wireless transmission unit that communicates with the wireless transmission unit and the wireless reception unit of the master unit, a microphone, and a speaker. A cordless telephone device provided with. 2. A master unit connected to a telephone line and having a wireless transmission unit and a wireless reception unit for a plurality of slave units and configured to send a message to each of the plurality of slave units; A wireless receiver and a wireless transmitter that communicate with the wireless transmitter and the wireless receiver, a slave unit having a microphone and a speaker, and a recording unit that records a voice signal from the master unit in the slave unit. Cordless telephone device. 3. The cordless telephone device according to claim 1, wherein the recording means of each slave unit is also configured to record a voice signal from a microphone of each slave unit. 4. The device according to claim 1, wherein the slave unit and the wireless transmission unit and the wireless reception unit of the base station can communicate with each other by switching the frequency of the slave unit. Cordless telephone device. 5. A wireless reception unit and a wireless transmission unit that communicate with the wireless transmission unit and the wireless reception unit of the base station, a microphone and a speaker, and are capable of communicating with the master unit of the cordless telephone device by switching the frequency. A mobile phone device characterized by the above. 6. A recording means for recording a voice signal from the base station, comprising a wireless reception part and a wireless transmission part for communicating with the wireless transmission part and the wireless reception part of the base station, a microphone and a speaker. Characteristic mobile phone device. 7. The portable telephone device according to claim 5, further comprising a recording means for recording a voice signal from the base station or the base unit of the cordless telephone device. 8. The mobile phone device according to claim 6 or 7, wherein the recording means is also configured to record an audio signal from a microphone of the mobile phone device.