JPH1198243A - Communication terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect privacy related to a message stored in an automatic answering mode. SOLUTION: When message data transmitted to a master device in an automatic answering mode are accompanied with the designation of a slave device number, the message data are stored in an area corresponding to the slave number of a memory (ST6, ST8, and ST9). When the message data are not accompanied by the designation of the slave device number, the message data are stored in the common area of the memory (ST12). When the other side of wire line incoming is registered as the slave device, and a transition operation to a message confirmation mode by the other side is executed, and message data written in the common area of the memory and the area corresponding to the slave device number are transmitted to the other side (ST5, ST13-ST15). When an extension incoming call is present from the slave device, and the transition operation to the message confirmation mode by the slave device is executed, the message data written in the common area of the memory, and the area corresponding to the slave device number are transmitted to the salve device (ST18, ST20).

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 telephone system in which a personal handyphone system (PHS) is also used as a slave unit of a digital cordless telephone. Specifically, when the message data transmitted in the answering machine mode is accompanied by the designation of the slave unit number, the master unit writes the message data to an area of the data storage means corresponding to the designated slave unit number, and The present invention relates to a communication terminal device in which the confirmation of a message related to message data can be performed only by a child device of a specified child device number, thereby maintaining privacy of a message stored in an answering machine mode.

[0002]

2. Description of the Related Art Conventionally, a cordless telephone including a master unit and a plurality of slave units has been known. In such a cordless telephone, a message transmitted from the other party in the answering machine mode is stored in the storage unit of the master unit, and this message can be confirmed by each of the slave units.

[0003]

Incidentally, in the above-mentioned cordless telephone, there is a case where each of a plurality of cordless handsets is used exclusively by a family member, for example. On the other hand, a message transmitted from the other party in the answering machine mode is often addressed to a specific person. But with traditional cordless phones,
Messages sent from the other party in answering machine mode can be checked on each of the slave units, and privacy cannot be maintained.

[0004] Therefore, an object of the present invention is to provide a communication terminal device capable of maintaining privacy of a message stored in an answering machine mode.

[0005]

According to the present invention, there is provided a communication terminal device comprising: a data storage unit for storing message data; a mode setting unit for setting an answering machine mode;
A data writing means for writing message data transmitted in an answering machine mode to a data storage means, wherein when the transmitted message data is accompanied by designation of a slave unit number, data writing is performed. The means writes the transmitted message data into an area of the data storage means corresponding to the specified slave unit number. When the transmitted message data does not involve the designation of the slave unit number, the data writing means may write the transmitted message data into a common area of the data storage means.

Further, a communication terminal device according to the present invention has a data storage means for storing message data, an automatic response when an extension is received from a slave, and a message confirmation mode based on the operation of the slave. And message transmitting means for reading out the message data written in the area corresponding to the number of the slave unit in the data storage unit in the message confirmation mode and transmitting the message data to the slave unit.

Further, a communication terminal device according to the present invention includes a base unit connected to a telephone line, and a base station connected to the base unit via a wireless line, and enabling at least an extension call with the base unit. A communication terminal device having a plurality of slave units, wherein the master unit includes a data storage unit for storing message data, a mode setting unit for setting an answering machine mode, and a slave unit transmitted in the answering machine mode. Data writing means for writing message data with designation of the machine number to an area of the data storage means corresponding to the designated slave number,
Control means for automatically answering when an extension is received from the slave unit, and thereafter setting a message confirmation mode based on operation of the slave unit, wherein the slave unit sends a slave unit number of its own telephone. Means, and a message confirmation mode transition operation means for transitioning the parent device to the message confirmation mode, wherein the parent device transmits a child message transmitted from the child device when transitioning to the message confirmation mode due to an extension incoming from the child device. The message data written in the area corresponding to the slave unit number in the data storage means is read out by the machine number and transmitted to the slave unit.

A communication terminal device according to the present invention has a data storage means for storing message data, an automatic response when an outside line is received from a partner, and a message confirmation mode based on an operation of the partner. Control means, a slave unit determining means for determining whether or not the other party is a slave unit, and, in the message confirmation mode, when the other party is determined to be a slave unit, the number of the slave unit in the data storage means is Message transmitting means for reading out the message data written in the corresponding area and transmitting it to the other party.

Further, the communication terminal device according to the present invention is connected via a radio line to a base unit connected to a telephone line and an exchange capable of transmitting a telephone number of a caller, and can make and receive calls as a mobile terminal. A communication terminal device having one or a plurality of slave units, wherein the master unit is a data storage unit for storing message data, a mode setting unit for setting to an answering machine mode, and transmitted in an answering machine mode. Data writing means for writing message data with the designation of a slave unit number to come into an area corresponding to the designated slave unit number of the data storage unit, and automatically responding when an outside line is received from the other party,
Thereafter, control means for setting the message confirmation mode based on the operation of the other party, and slave unit determination means for determining whether the other party is a slave unit, and the slave unit shifts the master unit to the message confirmation mode The master unit, when shifting to the message confirmation mode, determines that the other party is a slave unit based on the telephone number of the caller received at the time of incoming call from the outside line when shifting to the message confirmation mode. In this case, the message data written in the area corresponding to the slave unit number in the data storage means is read and transmitted to the other party.

In the present invention, the master unit is provided with data storage means such as a semiconductor memory or a magnetic tape for storing message data such as voices and characters transmitted from the other party in the answering machine mode. Then, the message data transmitted from the other party in the answering machine mode is written into the data storage means. In this case, if the message data is accompanied by the designation of the slave unit number, the message data is written to an area of the data storage means corresponding to the designated slave unit number in order to maintain privacy. On the other hand, when the message data does not involve the designation of the slave unit number, the message data is written in the common area of the data storage means.

For example, when there is an extension incoming call from the slave unit in the answering machine mode, the master unit automatically responds, and then enters the message confirmation mode based on the operation of the slave unit. In the message confirmation mode, the message data written in the area corresponding to the slave unit number in the data storage means is read and transmitted to the slave unit. In this case, the message data written in the data common area may be transmitted to the slave unit.

[0012] For example, when an outside line is received from the other party in the answering machine mode, the master unit automatically responds, and then enters the message confirmation mode based on the operation of the other party. In this message confirmation mode, when it is determined that the other party is a slave, the message data written in the area corresponding to the number of the slave in the data storage means is read and transmitted to the other party. . In this case, message data written in the data common area may be transmitted to the other party. When the other party is a slave, the slave is being used as a mobile phone. The determination as to whether or not the other party is a slave is performed based on, for example, the telephone number data of the caller detected at the time of an incoming call.

As described above, the message data accompanying the designation of the slave unit number transmitted to the master unit in the answering machine mode is written in the area corresponding to the designated slave unit number in the data storage means. The message data written in the area corresponding to the designated slave unit number in the storage means is transmitted to the slave unit in the message confirmation mode by operating the slave unit of the designated slave unit number, and is stored in the answerphone mode. It is possible to maintain the privacy of the message to be sent.

The master unit is provided with a message confirmation unit for confirming only the message relating to the message data stored in the common area of the data storage unit, so that the data is written in the area corresponding to each slave unit number of the data storage unit. The message related to the message data can be confirmed only by the corresponding slave unit.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a digital cordless telephone system using a plurality of portable telephones (PHS) 100 _{-1 to} 100 _-N as slave units. Base unit 200 of the digital cordless telephone system is connected to public telephone line 300.

First, the simplified portable telephones 100 _-1 to 100 _{-1 to} 100
_-N will be described. FIG. 2 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 is provided with 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
06, a low-frequency amplifier 107 for amplifying the received voice signal output from the amplifier 106, a speaker 108 as a receiver for outputting a voice based on the voice signal output from the amplifier 107, and a DTM for receiving the voice signal output from the voice codec unit 106.
If the signal is an F (Dual Tone Multiple Frequency) signal,
This DTMF signal is demodulated to obtain a 4-bit (1 nibble) D signal.
And a DTMF demodulator 109 for obtaining a TMF signal code. In this case, D obtained by the DTMF demodulator 109
The TMF signal code is supplied to the control unit 101.

The telephone set 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 and answering an incoming call, an end key for ending a call, a numeric keypad for inputting a telephone number, a text message, and the like. And keys for making an extension call to the base unit. The display unit 116 displays, 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 a partner terminal, and the like.

The control unit 101 has 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 R for temporarily writing a DTMF signal code or the like as character data obtained by the DTMF demodulator 109.
AM120.

The operation when the simplified portable telephone 100 shown in FIG. 2 is used as a portable telephone will be described.

When the power is turned on, the control channel is out of synchronization with the control channel. Therefore, 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.

Paging data is transmitted from the base station as control data using the control channel. The paging data is supplied from the TDMA processing unit 105 to the control unit 101, and when the 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 compression-encoded 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 2 of the digital cordless telephone
00 will be described. FIG. 3 shows a parent device 200. This base unit 200 includes a microcomputer,
It has a control unit 201 for controlling the operation of the entire system. 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, a working RAM 203 for temporarily storing data, and It has.

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, a line disconnection detection unit 207, and a modem circuit 208 are connected via a DC cut capacitor 205. 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.

Although not described above, a modem signal indicating the telephone number data of the caller is inserted into the call signal transmitted via the telephone line. The modem circuit 208 is for demodulating the modem signal.
01 is supplied. Whether or not to transmit the modem signal indicating the telephone number data can be set on the calling side, so that a modem indicating the telephone number data on the calling side may not be inserted in the call signal.

In the case of line disconnection by the calling 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 performing impedance matching 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 handset (handset) described later 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. .

Master device 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.

Master device 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.

Master 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 or the like, and telephone directory data, text messages, and the like. It has a non-volatile memory 228 and a ringtone output unit 229 that outputs a ringtone under the control of the control unit 201 when an incoming call arrives. The operation unit 226, the display unit 227, the nonvolatile memory 228, and the ringer output unit 22
9 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.
Key for setting the phone mode, operation keys for registering phonebook data, operation keys for searching phonebook data, operation keys for instructing calls, operations for answering machine mode and message confirmation mode A key, a key for making an extension call to a slave unit, and the like are arranged. Display 227
In addition to the state of the system, a text message, telephone directory data selected in the search for telephone directory data, a telephone number input with a numeric keypad, and the like are displayed.

Master unit 200 has a wireless modem 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. And the wireless unit 232
The operation of the wireless modulation / demodulation unit 231 is controlled by the control unit 201.

The operation of the parent device 200 and the telephone 100 as its child device shown in FIG. 3 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, under the control of the control unit 201, the changeover switch 224 is connected to the f side. 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 telephone 100 is located in the area of base unit 200 and functions as a child unit, when the telephone number of the other party is input by key operation of operation unit 115 of telephone 100 and a call is made. 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 tone 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 communicable state, the handset 215 is set to the on-hook state when the base unit 200 is used, or the speaker key of the operation unit 226 is pressed, and when the telephone 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 device 200 and telephone device 100 as a slave device 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. The telephone 100 also detects whether or not the communication channel is vacant, and sends a confirmation signal to the base unit 200 through the communication channel when the communication channel is vacant. The mobile phone 200 is now ready to talk.
Sends the ringing tone output instruction data to 0. 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, a call key of the operation unit 115 of the telephone 100 is pressed, and a signal of “transmit” and an ID code are sent to the base unit 200 through the control channel. Master device 200 that has received this confirms that it is the ID code of its own slave device, searches for a vacant channel for making a call, and notifies phone 100. The telephone 100 detects whether or not the communication channel is vacant, and when the communication channel is vacant, transmits a confirmation signal through the communication channel to the base station 200.
Send to

Next, in the parent machine 200, the connection switch 21
When the connection is established, the dial tone signal sent from the exchange is sent to the telephone 100 through the communication channel. The following is
As in the case of using base unit 200, a calling operation can be performed by inputting the telephone number of the other party using operation unit 115.

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.

The control operation of the control unit 201 when the master unit 200 shown in FIG.
This will be described with reference to the flowchart of FIG.

First, in step ST1, it is determined whether there is an incoming call. When there is an incoming call, in step ST2,
It is determined whether the incoming call is an internal line or an external line. If the incoming call is an outside line, the connection switch 21 is turned on in step ST3.
1 is responded as an on state, that is, an off-hook state, and the line with the calling side is connected. Then, in step ST4,
The changeover switch 224 is connected to the f side, and the ROM 202
The response message data prompting the input of the text message is read out 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.

Next, in step ST5, it is determined whether or not an operation for shifting to the message confirmation mode has been performed on the calling side, and in step ST6, it has been determined whether or not a character message has been received. It is determined whether a predetermined time has elapsed since the response message was sent, or whether the line disconnection detection unit 207 has detected disconnection of the line. When the DTMF signal code as the command data for instructing the transition to the message confirmation mode is obtained from the output data of the DTMF demodulator 220, it is determined that the transmission side has performed the transition operation to the message confirmation mode. When a DTMF signal code as character message data is obtained from the output data of the DTMF demodulator 220, it is determined that a character message has been received.

If it is determined in step ST6 that a text message has been received, it is determined in step ST8 whether or not a slave unit number has been designated. FIG. 5 shows a transmission data format when a slave unit number is specified. That is, the transmission data is the D corresponding to the character message data.
A character data portion including a TMF signal code and a DTMF signal code of "#" as a data end command, and a slave unit number designation data including a DTMF signal code disposed before the character data portion and including slave unit number data. It is composed of a part and a part. The slave unit number designation data section includes one or more digits of the slave unit number data, a header “* 1 * 1” added to the head of the slave unit number data, and a data end command added to the end thereof. # ".
Although not shown, the transmission data format when the slave unit number is not specified is the transmission data format shown in FIG. 5 from which the slave unit number designation data portion is removed.

If the slave unit number is specified in step ST8, the DTMF signal code as character message data is stored in the area of the nonvolatile memory 228 corresponding to the specified slave unit number in step ST9. Proceed to ST10. In addition, even if not described above, the telephones 100 _-1 to 100 _-1 .
Assuming that the slave unit numbers of 100 _-N (see FIG. 1) are 1 to N, the non-volatile memory 228 stores, as a storage area for character messages, an area corresponding to each slave unit number as shown in FIG. A common area is provided.

If no slave unit number is specified in step ST8, a DTMF signal code as character message data is stored in a common area of the nonvolatile memory 228 in step ST12, and thereafter, the process proceeds to step ST10. Further, in step ST7, when the predetermined time has elapsed or the line has been disconnected on the calling side, the process immediately proceeds to step ST10.
Proceed to. In step ST10, the connection switch 211 is turned off, that is, in the on-hook state, and the line with the calling side is disconnected.

As described above, when the answering mode is set, master device 200 automatically responds to an incoming call and prompts for the input of a text message. Is stored in the nonvolatile memory 228. In this case, the character message data with the designation of the slave unit number is stored in the area of the nonvolatile memory 228 corresponding to the designated slave unit number, while the character message data without the designation of the slave unit number is stored in the nonvolatile memory 228. It is stored in a common area.

If there is an operation to shift to the message confirmation mode in step ST5, in step ST13,
It is determined whether there is a caller ID notification. In this case, if a modem signal indicating the telephone number data of the caller is inserted in the call signal and the telephone number data of the caller is detected from the output data of the modem circuit 208, it is determined that there is a caller ID notification. I do. When there is a caller ID notification, in step ST14, based on the telephone number data of the caller,
It is determined whether or not the calling side is a telephone (PHS) as a child device registered with any of the child device numbers 1 to N.

If it is a handset, at step ST15,
The character message data written in the area corresponding to the slave unit number and the common area in the nonvolatile memory 228 is read and transmitted to the other party (originating side), and thereafter, the process proceeds to step ST10. If no character message data is written in the corresponding area, the process immediately proceeds to step ST10 without transmitting data to the caller. This is the same in steps ST16 and ST20 described later.

If there is no caller ID notification in step ST13, or if it is not a slave in step ST14, in step ST16, the character message data written in the common area of the nonvolatile memory 228 is read and transmitted to the caller. Then, the process proceeds to step ST10. Then, as described above, in step ST10, the line with the calling side is disconnected, and in step ST11, a standby state is set.

If the call is an extension at step ST2, response data is transmitted to the slave unit as the transmitting side at step ST17 to make a response, and the line with the slave unit is connected.
Then, in step ST18, it is determined whether or not a shift operation to the message confirmation mode has been performed on the slave unit, and in step ST18.
At 19, it is determined whether a predetermined time has elapsed since the automatic response or whether the line disconnection has been performed on the calling side. When command data for instructing the transition to the message confirmation mode is sent as control data, it is determined that the transmission side has performed the transition operation to the message confirmation mode.

If there is an operation to shift to the message confirmation mode in step ST18, character message data stored in the area corresponding to the number of the slave unit and the common area in the nonvolatile memory 228 is read out in step ST20, and the child message is read. And then proceeds to step ST21. In step ST19, if the predetermined time has elapsed or the line on the calling side has been disconnected, step ST2 is immediately executed.
Proceed to 1. Then, the wireless line with the slave unit is disconnected in the upper step ST21, and a standby state is set in a step ST11.

As described above, the character message data stored in the non-volatile memory 228 when the answering machine mode is set is transmitted to the slave unit through the extension or the outside line to check the message. By operating 226, the message can be confirmed. However, in the base unit 200, the nonvolatile memory 22
8, only the message relating to the character message data stored in the common area can be confirmed.

In this case, the control unit 201 sequentially reads out the character message data (DTMF signal code) of each case from the common area of the nonvolatile memory 228,
The character code is converted into a character code using the conversion format stored in the OM 202, and the character message of each case is sequentially displayed on the display unit 227 under the control of the control unit 201. In addition, even if not described above, the telephone (PH
The text message related to the text message data of each case transmitted in S) is also displayed on the display unit 116 under the control of the control unit 101 in the same manner.

In the present embodiment described above, the text message data accompanying the designation of the slave unit number transmitted to master unit 200 in answering machine mode is stored in nonvolatile memory 22.
8 is written to the area corresponding to the designated slave unit number. Then, the character message data written in the area corresponding to the designated slave unit number in the nonvolatile memory 228 is transmitted to only the slave unit in the message confirmation mode by operating the slave unit of the designated slave unit number. Confirmation of the text message is performed. In addition, master device 200 can confirm only the text message related to the text message data written in the common area of nonvolatile memory 228. Therefore, privacy of the text message stored in the answering machine mode can be maintained.

In the above-described embodiment, the message data written in the data storage means is character message data. However, message data in other data forms such as a voice message and an image message can be considered.

[0074]

According to the present invention, the message data accompanying the designation of the slave unit number transmitted in the answering machine mode is written in the area corresponding to the designated slave unit number in the data storage means. The message data written in the area corresponding to the designated slave unit number of the data storage means is transmitted to the slave unit in the message confirmation mode by operating the slave unit of the designated slave unit number, and is recorded in the answering machine mode. Good privacy for stored messages can be maintained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a digital cordless telephone system as an embodiment.

FIG. 2 is a block diagram showing a configuration of a simplified portable telephone used also as a slave of the digital cordless telephone system.

FIG. 3 is a block diagram showing a configuration of a base unit of the digital cordless telephone system.

FIG. 4 is a flowchart showing an operation when the answer phone mode is set in the master unit.

FIG. 5 is a diagram showing a transmission data format of character message data.

FIG. 6 is a diagram showing a configuration of a storage area for message data in a nonvolatile memory.

[Explanation of symbols]

100, 100 _{-1 to} 100 _-N 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 Changeover switch 115, 226 Operation unit 116, 227 Display unit 117, 228 Non-volatile memory 118, 229 Ring tone output unit 200 Parent Machine 204a, 204b telephone line connection terminal 206 incoming call detection unit 207 line disconnection detection unit 208 modem circuit 209 2-wire / 4-wire conversion circuit 210 hook switch 211 connection switch 212 hook state detection unit 215 handset 22 2 voice synthesizer 231 wireless modem

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideo Yoshizumi 1-2-1, Ikenota, Taito-ku, Tokyo Aiwa Corporation (72) Inventor Yoshito Takeshima 1-2-11, Ikenota, Taito-ku, Tokyo Aiwa Inside the corporation

Claims (13)

[Claims] 1. A data storage means for storing message data, a mode setting means for setting a message recording mode, a data writing means for writing message data transmitted in the message recording mode to the data storage means. Wherein the transmitted message data is accompanied by designation of a slave unit number, the data writing means stores the transmitted message data in the designation of the data storage means. A communication terminal device for writing in an area corresponding to the slave unit number. 2. The data writing means writes the transmitted message data to a common area of the data storage means when the transmitted message data does not involve designation of a slave unit number. The communication terminal device according to claim 1, wherein 3. The communication terminal device according to claim 2, further comprising a message confirmation unit that confirms only a message related to the message data written in the common area of the data storage unit. 4. A data storage means for storing message data; a control means for automatically answering when an extension is received from a slave unit, and thereafter setting a message confirmation mode based on an operation of the slave unit; A communication terminal device for reading out message data written in an area corresponding to the number of the slave unit in the data storage unit in a mode and transmitting the message data to the slave unit. 5. The apparatus according to claim 4, wherein the message transmitting means reads out the message data written in a common area of the data storage means and transmits the message data to the slave unit in the message confirmation mode. The communication terminal device according to claim 1. 6. A data storage means for storing message data, a mode setting means for setting an answering machine mode, and a message data transmitted in the answering machine mode and having a designation of a slave unit number. Data writing means for writing to an area corresponding to the specified slave unit number in the storage means; and control means for automatically responding when an extension is received from the slave unit, and thereafter setting a message confirmation mode based on the operation of the slave unit. And a message transmitting unit for reading out message data written in an area corresponding to the number of the slave unit in the data storage unit and transmitting the message data to the slave unit in the message confirmation mode. Terminal device. 7. A communication terminal comprising a master unit connected to a telephone line and one or more slave units connected to the master unit via a wireless line and capable of at least making an extension call with the master unit. An apparatus, wherein the master unit includes: a data storage unit for storing message data; a mode setting unit for setting an answering machine mode; and a message accompanying designation of a slave unit number transmitted in the answering machine mode. Data writing means for writing data to an area of the data storage means corresponding to the specified slave unit number; automatically responding when an extension is received from the slave unit; and then confirming a message based on the operation of the slave unit. A slave unit number sending unit for sending a slave unit number of the own telephone; and a message for shifting the master unit to the message confirmation mode. The master unit shifts to the message confirmation mode due to an extension incoming from the slave unit, the slave unit of the data storage unit is identified by a slave unit number transmitted from the slave unit. A communication terminal device for reading out message data written in an area corresponding to a device number and transmitting the message data to the child device. 8. A data storage means for storing message data, a control means for automatically answering when an outside line is received from the other party, and thereafter setting a message confirmation mode based on the operation of the other party; A slave unit determining means for determining whether or not the slave unit is a slave unit; and in the message confirmation mode, when the slave unit determining unit determines that the other party is a slave unit, A communication terminal device comprising: a message transmitting unit that reads out message data written in an area corresponding to a number and transmits the message data to the other party. 9. In the message confirmation mode, the message transmitting means further includes a message written in a common area of the data storage means when the slave unit determining means determines that the other party is a slave unit. 9. The communication terminal device according to claim 8, wherein data is read and transmitted to the other party. 10. The handset determining means includes a caller number detecting means for detecting a caller's telephone number data, and based on the caller's telephone number data detected by the caller number detecting means. 9. The communication terminal device according to claim 8, wherein it is determined whether the other party is a slave unit. 11. In the message confirmation mode, when the slave unit determining unit determines that the other party is not a slave unit, the message transmitting unit transmits the message data written in a common area of the data storage unit. The communication terminal device according to claim 8, wherein the communication terminal device reads out the data and transmits the data to the other party. 12. A data storage means for storing message data, a mode setting means for setting to an answering machine mode, and storing the message data transmitted in the answering machine mode with designation of a slave unit number in the answering machine mode. Data writing means for writing to the area corresponding to the specified slave unit number in the storage means; and control means for automatically responding when an outside line is received from the other party, and thereafter setting a message confirmation mode based on the operation of the other party And a slave unit determining means for determining whether the other party is a slave unit; and in the message confirmation mode, when the slave unit determining unit determines that the other party is a slave unit, the data storage means Message transmission means for reading out message data written in an area corresponding to the number of the slave unit and transmitting the message data to the other party. Communication terminal device according to claim and. 13. A mobile telephone, comprising: a base unit connected to a telephone line; and one or a plurality of slave units connected via a wireless line to an exchange capable of transmitting a telephone number of a caller and capable of making and receiving calls as a mobile terminal. A communication terminal device, wherein the master unit includes: a data storage unit for storing message data; a mode setting unit for setting an answering machine mode; and a designation of a slave unit number transmitted in the answering machine mode. Data writing means for writing message data accompanied by the following in the area corresponding to the specified slave unit number in the data storage means, and automatically responding when an outside line is received from the other party, and thereafter, based on the operation of the other party Control means for setting a message confirmation mode, and a child device determining means for determining whether or not the other party is a child device. The child device shifts the parent device to a message confirmation mode. Comprising a message confirmation mode shift operation means for causing said base unit, when the transition to the message check mode,
When it is determined from the telephone number of the caller received at the time of receiving the outside line by the slave unit determining means that the other party is a slave, the data is written into an area corresponding to the number of the slave in the data storage means. A communication terminal device which reads out message data and sends it to the other party.