JPH11136351A - Communication terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a slave set to immediately confirm the contents of a message sent from an external line caller to a master set. SOLUTION: A master set 200 receives character message data sent from an external line caller in the automatic answering recording mode, and in the case that a telephone set (slave set) 100 produces a message confirmation operation, the character message data are immediately sent to the telephone set 100 (ST302, ST207, ST103). Then the telephone set 100 sequentially displays (ST104) a character, message consisting of character message data sent from the master set 200. Thus, the user possessing the telephone set 100 can immediately confirm the message contents of character message data sent from the external line caller to the master set 200 and cope with the message immediately. When a speech operation is made in a state that the character message is sequentially displayed on the telephone set 100, a state of communication available is set between the telephone set 100 and the external line caller (ST105, ST106).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal device suitable for application to, for example, a digital cordless telephone system using a personal handyphone system (PHS) as a slave unit. More specifically, the present invention relates to a communication terminal device in which a master unit transmits message data from an outside line transmitting side being received to the slave unit, so that the content of the message can be immediately confirmed by the slave unit.

[0002]

2. Description of the Related Art Conventionally, telephones having an answering machine function are well known. When this type of telephone is set to the answering machine mode, when there is an incoming call, it automatically answers and goes into a call state. Etc., and a message is output from a speaker.

[0003]

The same operation is performed when the telephone having the answering machine function described above is, for example, a digital cordless telephone base unit. In other words, the voice message data from the foreign call originating side is not transmitted to the slave, and the content of the message cannot be immediately confirmed by the slave. Therefore, even if the user has a child device, it is not possible to immediately cope with a message from the outside line transmitting side.

[0004] Therefore, it is an object of the present invention to provide a communication terminal device capable of immediately confirming the contents of a message in a slave unit.

[0005]

SUMMARY OF THE INVENTION A communication terminal device according to the present invention detects that an incoming call has been received and automatically responds.
Line control means for connecting a line with the outside line transmitting side, message data receiving means for receiving message data sent from the outside line transmitting side by the line, and transmitting the message data to the slave unit while receiving the message data Message data transmitting means.

Further, a communication terminal device according to the present invention includes a message data receiving means for receiving message data from an outside line transmitting side, which is received by the master unit and sent from the master unit, and Message output means for outputting a message.

[0007] A communication terminal device according to the present invention is a communication terminal device comprising a master unit connected to a telephone line and a slave unit connected to the master unit via a wireless line. The line machine automatically detects and responds to the incoming call, and the line control means for connecting the line with the outside line transmitting side, and the message data receiving for receiving the message data sent from the outside line transmitting side by the line. Means, and message data transmitting means for transmitting the message data to the slave while receiving the message data, wherein the slave is provided with message data receiving means for receiving message data sent from the master, And a message output means for outputting a message according to.

In this invention, when there is an incoming call, the base unit automatically responds, connects the line with the calling side, and enters a talking state. In this state, message data such as voices and characters sent from the transmitting side is received, and this message data is immediately transmitted to the slave unit. In this case, the master unit may transmit the message data to the slave unit only when the message confirmation operation is performed by the slave unit, and may avoid unnecessary transmission of the message data.

The slave unit receives the message data sent from the master unit and outputs a message based on the message data. For example, when text message data is sent, text messages are sequentially displayed on the display unit. Thus, when the user has a child device,
The contents of the message can be immediately confirmed, and the message from the outside line transmitting side can be immediately dealt with. Note that when the master unit performs a call operation with the slave unit while receiving the message data from the outside line calling side, a transition may be made to a call state between the slave unit and the outside line calling side. The user can immediately make a call with the outside line transmitting side from the message content.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment,
This is applied to a digital cordless telephone system using a simplified portable telephone (PHS) as a slave unit.

First, a simplified portable telephone 10 as a slave unit
0 will be described. FIG. 1 shows a simplified mobile phone 100. The telephone 100 includes a microcomputer, a control unit 101 for controlling the entire system, an antenna 102 for transmission and reception, and a down-converted received signal of a predetermined frequency captured by the antenna 102. π / 4 shift QPSK (Quadrature P
hase Shift Keying) signal and a radio section 103 for up-converting a π / 4 shift QPSK signal output from a digital modulation / demodulation section to be described later to obtain a transmission signal of a predetermined frequency. The π / 4 shift QPSK signal is demodulated to obtain received data, and TDMA (Time Division Mu
and a digital modulation / demodulation unit 104 for performing a modulation process on transmission data output from the ltiple access processing unit to obtain a π / 4 QPSK signal.

Further, telephone set 100 selects predetermined downlink slot data from received data (time-division multiplexed data of a plurality of slots) output from digital modulation / demodulation section 104 and separates the data into control data and compressed voice data. In addition, a TDMA for multiplexing compressed audio data output from an audio codec unit described later and control data output from the control unit 101 into a preset uplink slot.
It has a processing unit 105.

The telephone 100 has a TDMA processing unit 1.
In addition to performing decoding processing (including error correction processing) on the compressed audio data output from the receiver 05 to obtain a received audio signal, compression encoding processing (including error correction code addition processing) is performed on the transmission audio signal. ) To obtain compressed audio data, and an audio codec 1
It has a low-frequency amplifier 107 for amplifying the received voice signal output from the receiver 06 and a speaker 108 as a receiver for outputting a voice based on the voice signal output from the amplifier 107.

Further, telephone set 100 receives a DTMF (Dual T
one Multiple Frequency) signal, this DTM
A DTMF demodulator 109 for demodulating the F signal to obtain a 4-bit (1 nibble) DTMF signal code is provided. In this case, the DTMF signal code obtained by the DTMF demodulator 109 is supplied to the control unit 101.

The telephone 100 includes a microphone 111 as a transmitter, a low-frequency amplifier 112 for amplifying an audio signal output from the microphone 111, and a DTMF signal code supplied from the control unit 101.
A DTMF modulator 113 for converting to a signal, and an amplifier 112
Output audio signal or output DT of the DTMF modulator 113
The MF signal is selectively extracted and the audio codec section 106
And a change-over switch 114 for supplying a transmission audio signal to the switch.

In this case, the output side of the amplifier 112 is connected to the fixed terminal on the a side of the changeover switch 114, and the output side of the DTMF modulator 113 is connected to the fixed terminal on the b side. The changeover switch 114 is controlled by the control unit 101, and is connected to the b side when transmitting a DTMF signal, and is connected to the a side when performing another call or the like.

The telephone 100 has an operation unit 115 for the user to perform various key operations, a display unit 116 including a liquid crystal display and the like, and a DTMF as character data.
A non-volatile memory 117 for storing signal codes and the like;
A ring tone output unit 118 that outputs a ring tone under the control of the control unit 101 when an incoming call is received. These operation units 11
5. The display unit 116, the nonvolatile memory 117, and the ringing tone output unit 118 are connected to the control unit 101, respectively.

The operation unit 115 includes a call key for instructing a call or answering an incoming call, a call end key for ending a call, a numeric keypad for inputting a telephone number, a text message, and the like. , A key for making an extension call to the base unit, a key for performing a confirmation operation of a text message sent from the outside line transmitting side, and the like. Display 116
In addition to the state of the system, a telephone number and a text message input by a numeric keypad, a text message sent from the parent device, and the like are displayed.

The control unit 101 also includes a ROM (read only memory) 11 in which an operation program of the microcomputer, a conversion format for converting DTMF signal codes into character codes, and the like are written.
9 and a working RAM for temporarily storing data
120.

The operation when the simplified portable telephone 100 shown in FIG. 1 is used as a portable telephone will be described.

When the power is turned on, since the synchronization with the control channel is lost, the control channel transmitted from the base station is received and the synchronization with the control channel is established. Thereafter, location registration that the user is in the area of the base station is performed. This location registration is performed using the communication channel, and after the location registration is completed, the mobile station returns to the control channel receiving state and enters the standby state.

First, the operation for making a call will be described. In this case, for example, if the call key is operated after the telephone number of the other party is input by key operation of the operation unit 115,
A calling process is performed. That is, telephone number data and the like are transmitted from the control unit 101 as control data to the TDMA processing unit 105.
And transmitted to the base station on the control channel. As a result, the line connection with the other party is established, and a call is made possible.

Here, the communication is performed using the communication channel. At the time of the line connection processing, the communication frequency and the slot position data of the communication channel are transmitted as control data from the base station using the control channel, and the TDMA processing is performed. The information is supplied from the unit 105 to the control unit 101. Control unit 101
Controls the radio unit 103 based on the communication frequency data so that the transmission / reception frequency matches the communication frequency of the communication channel, and sets the TD based on the slot position data.
The slot selected by the MA processing unit 105 is set. Therefore, the call is made using the call channel notified from the base station.

Further, paging data is transmitted as control data from the base station using the control channel, and this paging data is supplied from the TDMA processing unit 105 to the control unit 101. When an incoming call is detected, the control unit 101 The ringing tone output section 118 is controlled to output a ringing tone.

While this calling operation is being performed,
When the call key is operated and there is a response, response data is supplied from the control unit 101 as control data to the TDMA processing unit 105 and transmitted to the base station via the control channel. As a result, the line connection with the other party is established, and a call is made possible. Also in this case, the communication is performed using the communication channel notified from the base station.

In the talking state, the compressed voice data transmitted through the talking channel is output from the TDMA processing unit 105. The compressed audio data is supplied to the audio codec unit 106, where it is converted into an analog signal after being subjected to a decoding process. Then, the received audio signal output from the audio codec unit 106 is transmitted to the speaker 10 via the amplifier 107.
8 and the speaker 108 outputs a sound based on the received sound signal.

The transmission audio signal output from the microphone 111 is amplified by the amplifier 112, supplied to the audio codec unit 106, converted into a digital signal, and then subjected to a compression encoding process to form compressed audio data. . Then, the compressed audio data output from the audio codec unit 106 is supplied to the TDMA processing unit 105, and transmitted to the other party through the communication channel.

When a text message is sent to the other party during a call, the control unit 101 outputs a DTMF signal code corresponding to the text message, and the DTMF signal code is converted by the DTMF modulator 113 into a DTMF signal. . The DTMF signal is transmitted to the audio codec 1
06 so that the text message is
It is sent out to the line as a signal.

Next, the base unit 200 of the digital cordless telephone system will be described. FIG. 2 shows the parent device 200. The master unit 200 includes a microcomputer, and a control unit 20 for controlling the operation of the entire system.
One. The control unit 201 includes a ROM 202 in which an operation program of a microcomputer, a conversion format for converting a DTMF signal code into a character code, response message data, and the like are written.
A work RAM 203 for temporarily storing data.

Base unit 200 has terminals 204a and 204b for telephone line connection and terminals 204a and 204b.
In addition, an incoming call detection unit 206 and a line disconnection detection unit 207 connected via a DC cut capacitor 205 are provided. The incoming call detection unit 206 detects an incoming call by detecting a 16 Hz calling signal intermittently supplied from the exchange, and the incoming call detection signal output from the incoming call detection unit 206 is supplied to the control unit 201.

In the case of line disconnection by the originating side, a 400 Hz continuous signal (dial tone signal) or a 400 Hz intermittent signal (busy tone signal) is sent from the exchange, or a silent state occurs. Line disconnection detector 20
In 7, line disconnection is detected by detecting any of the above-described states, and a line disconnection detection signal output from the line disconnection detection unit 207 is supplied to the control unit 201.

Base unit 200 performs two-wire / four-wire conversion while matching impedance with the line side.
Four-wire conversion circuit 209 and hook switch 21 inserted and connected between terminals 204a and 204b and conversion circuit 209
0, a connection switch 211 connected in parallel to the hook switch 210, and a hook state detection unit 212.

As is well known, when a later-described handset (handset) is in an off-hook state, the hook switch 210 is turned on, the line is in a DC closed state (DC loop closed), and one handset is in a closed state. When in the on-hook state, the hook switch 210 is turned off, and the line is in a DC open (DC loop open) state. The hook state detection unit 212 includes a connection switch (not shown) that is turned on and off in conjunction with the hook switch 210. A hook state detection signal output from the hook state detection unit 212 is supplied to the control unit 201. You.

The on / off of the connection switch 211 is controlled by the control unit 2
01. For example, when a speaker key of an operation unit described later is pressed to set a speaker use mode, the connection switch 211 is turned on, and the line is DC closed even when the handset is in an on-hook state. When the connection switch 211 is turned on in the speaker use mode and the line is in the DC closed state, when the speaker key of the operation unit is pressed, the connection switch 211 is turned off and the line It will be open.

Master device 200 also includes conversion circuit 209-4.
A low-frequency amplifier 213 connected to the line side (reception) and amplifying a received audio signal transmitted by the line, and a received audio signal output from the low-frequency amplifier 213 to a speaker 214 or a handset (speaker) of the handset 215
And a changeover switch 216 for selectively supplying power to the In this case, the fixed terminal on the a side of the changeover switch 216 is connected to the speaker 214, the fixed terminal on the b side is connected to the handset of the handset 215, and the movable terminal is connected to the output side of the low frequency amplifier 213. .

Base unit 200 includes microphone 217.
Switch 218 for selectively extracting an audio signal from the telephone or a transmitter (microphone) of the handset 215, and a low-frequency amplifier 219 for amplifying the audio signal extracted by the switch 218. doing. In this case, the fixed terminal on the a side of the changeover switch 218 is connected to the microphone 217, the fixed terminal on the b side is connected to the transmitter of the handset 215, and the movable terminal is connected to the input side of the low frequency amplifier 219. ing. The switches 216 and 218 are switched by the control unit 2
When the handset 215 is used, it is connected to the side a when the speaker 214 and the microphone 217 are used.

Master device 200 also includes conversion circuit 209-4.
D connected to the line side (reception) and sent by the line
4-bit (1 nibble) DTMF by demodulating the TMF signal
A DTMF demodulator 220 that obtains a signal code and supplies it to the control unit 201, and a DTMF modulator 221 that converts the DTMF signal code supplied from the control unit 201 into a DTMF signal
A voice synthesizer 222 that converts voice data supplied from the control unit 201 into a synthesized voice signal, and a DTMF modulator 2
And an adder 223 for adding the DTMF signal output from the audio signal 21 and the audio signal output from the audio synthesizer 222.

Base unit 200 includes low-frequency amplifier 219.
And a selector switch 224 for selectively extracting the output audio signal of the adder 223 and the output signal of the adder 223 and supplying them to the 4-wire side (transmission) of the conversion circuit 209. In this case, the fixed terminal on the e side of the changeover switch 224 is connected to the output side of the low frequency amplifier 219, the fixed terminal on the f side is connected to the output side of the adder 223, and the movable terminal is
Connected to the line side (transmit). Switching of the changeover switch 224 is controlled by the control unit 201.

Base unit 200 stores an operation unit 226 for the user to perform various key operations, a display unit 227 composed of a liquid crystal display and the like, and stores telephone directory data and character message data. A non-volatile memory 228 and a ring tone output unit 229 that outputs a ring tone under the control of the control unit 201 when an incoming call is received. These operation units 226,
The display unit 227, the non-volatile memory 228, and the ringer output unit 229 are connected to the control unit 201, respectively.

The operation unit 226 includes a numeric keypad for inputting a telephone number, character data, and the like, and a speaker 214.
Speaker key for setting the use mode, operation keys for registering phonebook data, operation keys for searching phonebook data, operation keys for instructing calls, operation keys for setting the answering machine mode, A key for making an extension call to a slave unit, an operation key for displaying and confirming a text message, and the like are arranged. The display unit 227 displays, in addition to the state of the system, a text message, telephone directory data selected by searching the telephone directory data, a telephone number input using the numeric keypad, and the like.

Master device 200 has a wireless modulation / demodulation unit 231 for performing extension communication, a wireless unit 232, and a transmitting / receiving antenna 233. Radio modem 231
Are connected to the 4-wire side (transmission and reception) of the conversion circuit 209. Although a detailed description is omitted, the radio unit 232 and the radio modulation / demodulation unit 231 are the same
00, the radio unit 103 and the digital modulation / demodulation unit 10
4. TDMA processing unit 105 and voice codec unit 10
6. The operations of the radio unit 232 and the radio modulation / demodulation unit 231 are controlled by the control unit 201.

The operation of the parent device 200 shown in FIG. 2 and the telephone 100 shown in FIG. 1 as its child device will be described.

Whether the handset 215 is set to the off-hook state, or the line is closed by pressing the speaker key of the operation unit 226, and then the telephone number of the other party is input by operating the keys of the operation unit 226. Alternatively, if a call operation is performed in a state where the desired telephone directory data is displayed on the display unit 227 by searching the telephone directory data, a call operation is performed.

That is, the changeover switch 224 is connected to the f side under the control of the control unit 201. The control unit 20
1 supplies a DTMF signal code corresponding to the telephone number data of the other party to the DTMF modulator 221.
The F modulator 221 outputs a DTMF signal corresponding to the other party's telephone number data. Then, this DTMF signal is supplied to the 4-wire side (transmission) of the conversion circuit 209 through the f side of the changeover switch 224, and further transmitted to an exchange (not shown) through a telephone line. As a result, the line with the other party is connected, and a call is made possible.

When the telephone 100 is located in the area of the parent device 200 and functions as a child device, if the telephone number of the other party is input by key operation of the operation unit 115 of the telephone 100 and a calling operation is performed. The telephone number data is sent from the telephone set 100 to the base unit 200, and the wireless modem unit 231
Is supplied to the control unit 201. In this case, the control unit 20
1, the changeover switch 224 is connected to the f side, and the DTMF modulator 221 outputs a DTMF signal corresponding to the telephone number data of the other party.
The TMF signal is supplied to the 4-wire side (transmission) of the conversion circuit 209, and transmitted to the exchange via a telephone line. As a result, the line with the other party is connected, and the telephone 1 as a slave unit is connected.
00 is now available.

When a call signal is transmitted through the telephone line in a standby state, an incoming call is detected by incoming call detecting section 206, and a ringing sound output section 229 of base unit 200 and a call of telephone set 100 as a sub unit are called. A ringing tone is output from the sound output unit 118. In the base unit 200, the handset 215 can be set to an off-hook state or a speaker key of the operation unit 226 can be pressed to respond when the ringing tone is output. On the other hand, the telephone set 100 as the slave unit can respond by pressing the talk key of the operation unit 115 while the ringing tone is being output. By this response operation, the hook switch 210 or the connection switch 211 is turned on, and the line is in a DC closed state. As a result, the line with the other party is connected, and a call can be made.

When the line is connected and the telephone is in a callable state, the handset 215 is set to an on-hook state when the base unit 200 is used, or the speaker key of the operation unit 226 is depressed, while the telephone set 100 is used. The line is disconnected by pressing the end key of the operation unit 115 to open the line.

Here, the communication operation between master unit 200 and telephone set 100 as a slave unit will be briefly described. When a call is received from the other party on the outside line, for example, the following communication operation is performed. First, base unit 200 notifies telephone set 100 of an incoming call through the control channel. At this time, an ID code is transmitted to confirm that they are paired with each other. The telephone 100 that has received the ID code checks whether the ID codes match, and if they match, sends the ID code back to the parent device 200.

Next, base unit 200 searches for a vacant channel for talking and notifies telephone set 100. Telephone 100 also detects whether the channel is free, and when free, sends a confirmation signal to base unit 200 through the communication channel. The mobile phone 200 is now ready to talk.
To send ringing tone output instruction data. Slave device 100
When receiving the instruction data of the ringing tone output, the ringing tone output unit 118 outputs a ringing tone. When the call key of the operation unit 115 is pressed while the ringtone is being output,
The response signal is sent to base unit 200, connection switch 211 of base unit 200 is turned on, and the line is connected, whereby a telephone call using telephone 100 as a slave unit is established.

When a call is made from the telephone set 100 as a slave unit to the other party, the following communication operation is performed, for example. First, the call key (call button) of the operation unit 115 of the telephone set 100 is pressed, and a notification that the user wants to shift to the communication channel through the control channel is sent to the base unit 200 side. Based on the ID included in the notification, master device 200 confirms that the slave device is its own device, searches for a free communication channel for making a call, and sets telephone 100 to the communication channel. Notice. Telephone 100 checks whether the communication channel is free, and when free, notifies base unit 200 that the user wants to talk through the communication channel (call channel).

Then, master device 200, having received the notification that the user wants to talk, turns on connection switch 211, closes the line connected to the exchange, and waits for dial input. In this state, telephone number data is transmitted from telephone set 100 to base unit 200, and base unit 200 that has received the telephone number data performs a calling operation based on the telephone number data. When telephone number data is included in the notification from telephone 100 to base unit 200 that the user wants to make the above-described call, base unit 200 immediately performs a calling operation based on the telephone number data after the line is closed.

As described above, communication between master unit 200 and telephone set 100 as a slave unit is performed using a control channel or a predetermined communication channel.
The control units 101 and 201 of 0 perform control so as to switch the transmission and reception frequencies of the radio units 103 and 232 according to the control channel and the communication channel used, respectively.

Next, the operation when the base unit 200 is set to the answering machine mode will be described with reference to the control sequence diagram of FIG. In this case, it is assumed that telephone 100 is functioning as a child device.

First, in step ST301, when there is a call from the telephone on the outside line originating side to base unit 200, base unit 200 determines in step ST201 the ringing tone output unit 229.
In addition to outputting a ringing tone, in step ST202,
The incoming information is transmitted to the telephone set (child device) 100 using the control channel. Then, telephone 100 that has received the incoming call information from base unit 200 outputs a ringing tone from ringing tone output section 118 in step ST101.

After outputting the ringing tone a predetermined number of times, base unit 200 stops outputting the ringing tone from ringing tone output section 229 in step ST203, and returns to step ST20.
In step 4, the connection switch 211 is turned on, that is, turned off-hook, and the line with the calling side is connected by automatically responding.
As a result, a telephone call between the telephone on the outside line transmission side and the base unit 200 is enabled.

Then, master device 200 proceeds to step ST20.
In step 5, information indicating that automatic response has been made is transmitted to telephone set 100 using the control channel.
Then, the changeover switch 224 is connected to the f side, and the ROM 2
The response message data prompting the input of the text message is read out from 02 and supplied to the speech synthesizer 222. As a result, a voice signal corresponding to the response message is output from the voice synthesizer 222, and the voice signal is transmitted to the line via the conversion circuit 209.

Further, telephone set 100 which has received the information indicating that automatic response has been received from base unit 200 proceeds to step ST102.
Then, the output of the ring tone from the ring tone output unit 118 is stopped. In this case, the display unit 116 displays, for example, a message indicating that the parent device 200 has responded. Then, when the user of the telephone 100 desires to confirm the text message sent from the calling telephone to the base unit 200, the operation unit 115 performs a message confirmation operation in step ST103. As a result, the base unit 20 is
0, data for starting a call is transmitted using the control channel, and base unit 200 and telephone set (slave unit) 100 are transmitted.
Is in a callable state.

In response to the response message prompting the input of the text message sent from base unit 200, in step ST302, the telephone set on the outside line transmission side sets base unit 200
When the text message data is transmitted to
In the case of 00, the DTMF demodulator 220 outputs a DTMF signal code as character message data, and enters a state of receiving character message data. Master device 200 transmits the received character message data to step ST207.
Then, the DTMF signal code is stored in the nonvolatile memory 228 and the DT output from the conversion circuit 209 is stored.
The telephone 10 using the MF signal as it is using the communication channel
Send to 0.

When a DTMF signal as text message data is sent from base unit 200,
In the case of 0, a DTMF signal code as character message data is output from the DTMF demodulator 109 to enter a state of receiving character message data. In step ST104, telephone set 100 stores the received DTMF signal code as character message data in RAM 120, and sequentially displays a character message based on the message data on display unit 116. In this case, the character message data stored in the RAM 120 is sequentially read, converted into a character code using the conversion format stored in the ROM 119, and the character message is sequentially displayed on the display unit 116 under the control of the control unit 101. Will be displayed.

In this state, that is, when base unit 200 is receiving character message data from the telephone set on the outside line and character messages are sequentially displayed on display unit 116 of telephone set 100, step ST10 is executed.
In 5, it is determined whether or not there is a user's call operation by pressing a call key or the like, and further, in step ST107, it is determined whether or not there is a user's message confirmation end operation.
If there is a call operation in step ST105, in step ST106, the telephone on the outside line transmitting side and the telephone (slave) 1
Between 00 and 00, a call is possible. On the other hand, step ST
At 107, when there is a message confirmation end end operation,
Telephone 100 disconnects the line with master device 200 in step ST108, and enters a standby state in step ST109.

After finishing transmitting the text message data to base unit 200, the telephone on the outside line originating side disconnects the line with base unit 200 in step ST303.
When the line disconnecting operation of the telephone on the outside line originating side is performed, base station 200 sets connection switch 211 in step ST208.
In the off state, that is, the on-hook state, to disconnect the line from the calling telephone. Similarly, when there is the above-described line disconnection operation of telephone 100, master device 200 disconnects the line with telephone 100 in step ST209.

Note that, depending on the timing of the user's message confirmation ending operation on the telephone 100, the parent device 2
At 00, the extension cutting process in step ST209 may be performed before the outside line cutting process in step ST208. After completion of the extension cutting process and the external line cutting process, master device 200 proceeds to step ST210.
Then, it is in a standby state.

As described above, in the present embodiment, the text message data transmitted from the telephone on the outside line sending side to base unit 200 while base unit 200 is set to the answering machine mode is the slave unit. When the user performs a message confirmation operation on the telephone set 100, the base unit 200 immediately transmits the message to the telephone set 100,
A text message is displayed on the display unit 116. Therefore, the user having the telephone set 100 as the slave unit can immediately confirm the message content and can immediately deal with a text message from the outside line transmitting side.

In a state where base unit 200 has received character message data from the telephone set on the outside line originating side and the character messages are sequentially displayed on display unit 116 of telephone set 100 as the sub unit, When there is a user's call operation, a call can be made with the telephone on the outside line originating side. Therefore, the user who has the telephone 100 as the slave examines the message content,
When deemed necessary, a call can be made with the outside line calling party immediately.

In the above-described embodiment, text message data is transmitted from base unit 200 to telephone set 100 only when the user performs a message confirmation operation on telephone set 100 (step ST10 in FIG. 3).
3), text message data may be transmitted from base unit 200 to telephone set 100 without being subject to a message confirmation operation by the user.

Further, in the above-described embodiment, telephone 100 disconnects the line with base unit 200 only when the user performs a message confirmation ending operation (see step ST107 in FIG. 3). Alternatively, the line disconnection process may be automatically performed after a certain time elapses, without the condition that the user performs a message confirmation end operation.

Further, in the above-described embodiment, character message data is handled. However, the present invention is similarly applied to a communication terminal device that handles message data of other data types such as a voice message and an image message. Of course, you can.

Although the case where telephone 100 functions as a child device has been described, the present invention is also applicable to telephone 100 that functions as a portable telephone when parent device 200 is in a public area. Clearly there is.

[0069]

According to the present invention, the base unit transmits message data from the outside line transmitting side being received to the sub unit, and the user having the sub unit can immediately confirm the message content and transmit the outside line. Respond immediately to messages from the side. Unnecessary transmission of message data can be avoided by transmitting message data from the parent device to the child device only when a message confirmation operation is performed by the child device. Also, when the master unit receives message data from the outside line calling side and sequentially transmits the message data to the slave unit, when a call operation is performed on the slave unit, the communication between the slave unit and the outside line calling side is performed. By making the transition to the call state, the user having the child device can immediately make a call with the outside line transmitting side depending on the content of the message.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a simplified portable telephone used also as a slave of a digital cordless telephone system as an embodiment.

FIG. 2 is a block diagram showing a configuration of a base unit of the digital cordless telephone system as an embodiment.

FIG. 3 is a control sequence diagram for explaining an operation when the parent device is set to an answering machine mode;

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Simple mobile phone (slave unit) 101, 201 Control unit 102, 233 Transmission / reception antenna 103, 232 Radio unit 104 Digital modulation / demodulation unit 105 TDMA processing unit 106 Audio codec unit 108, 214 Speaker 109, 220 DTMF demodulator 111, 217 Microphone 113,221 DTMF modulator 114,216,218,224 Switch 115,226 Operation unit 116,227 Display unit 117,228 Non-volatile memory 118,229 Ringtone output unit 200 Base unit 204a, 204b For telephone line connection Terminal 206 Incoming detection unit 207 Line disconnection detection unit 209 2-wire / 4-wire conversion circuit 210 Hook switch 211 Connection switch 212 Hook state detection unit 215 Handset 222 Voice synthesizer 231 Radio modulation / demodulation unit

Continuation of the front page (72) Inventor Hideo Yoshizumi 1-2-1-11 Ikenota, Taito-ku, Tokyo Inside Iwa Corporation (72) Inventor Yoshito Takeshima 1-2-1-11 Ikenota, Taito-ku, Tokyo Aiwa Corporation

Claims (10)

[Claims] 1. Line control means for automatically responding upon detection of an incoming call and connecting a line with an outside line transmitting side, and receiving message data sent from the outside line transmitting side by the line. A communication terminal device comprising: a message data receiving unit that transmits the message data to the slave unit while receiving the message data. 2. The communication terminal device according to claim 1, wherein said message data transmitting means transmits said message data to said slave unit only when a message confirmation operation is performed by said slave unit. 3. A communication control means for performing a call operation, and when a call operation by the call operation means is performed while the message data is being received, a call state with the outside line calling side is established. The communication terminal device according to claim 1 or 2, wherein the communication terminal device makes a transition. 4. A message data receiving means for receiving a message data from an outside line transmitting side which is received by the master unit and transmitted from the master unit, and a message output means for outputting a message based on the message data. A communication terminal device comprising: 5. The communication terminal apparatus according to claim 4, further comprising a message confirmation operation means for operating the message data to be sent from the master unit. 6. A call operation means for performing a call operation, wherein when there is a call operation by said call operation means while said master unit is receiving message data from said outside line transmitting side, The communication terminal device according to claim 4, wherein a transition is made to a call state with the outside line transmission side. 7. A communication terminal device comprising a master unit connected to a telephone line and a slave unit connected to the master unit via a wireless line, wherein the master unit receives an incoming call. Line control means for automatically responding and detecting a message, and connecting to a line with the outside line transmitting side; message data receiving means for receiving message data sent from the outside line transmitting side via the line; Message data transmitting means for transmitting the message data to the slave unit during the reception of the message data, wherein the slave unit receives message data sent from the master unit, A communication terminal device comprising: a message output unit that outputs a message. 8. The slave unit further includes a message confirmation operation unit that operates so that the message data is sent from the master unit, and the message data transmission unit of the master unit confirms a message by the slave unit. The communication terminal device according to claim 7, wherein the message data is transmitted to the slave unit only when an operation is performed. 9. The communication device according to claim 1, wherein the slave unit has a call operation unit for performing a call operation, and the call operation by the call operation unit is performed while the master unit receives the message data from the outside line transmitting side. The communication terminal device according to claim 7, wherein when there is, a transition is made to a communication state between the slave unit and the outside line transmitting side. 10. The communication terminal device according to claim 1, wherein said message data is character message data.