JP2000174931A - Mobile object communication terminal and mobile object communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile communication terminal and a mobile communication system capable of utilizing a voice message as a voice mail without via a voice call service installed in a mobile communication system. SOLUTION: When transmitting a voice message, after the voice message from a transmitter 17 is band-compressed and voice-encoded by a voice codec part 15, it is made a group of digital data and considering it to be one voice message file (binary file), the group is subjected to binary-text conversion processing. After then, the group is transmitted toward the electronic mail address of an opposite party inputted by the user of a mobile communication terminal 1 in the form of adding to an electronic mail. When receiving the voice message, an electronic mail added with the voice message file addressed to oneself is received, the voice message file is subjected to text-binary conversion processing and then the mail is developed on a memory part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a mobile communication terminal and a mobile communication system, and more particularly, to a mobile communication terminal and a mobile communication system for transmitting a voice message such as a message to a destination mobile communication terminal.

[0002]

2. Description of the Related Art Conventionally, in a voice mail service in a mobile communication system, that is, an answering machine service, when a call is made from a mobile communication terminal (for example, a mobile phone terminal) to a certain mobile communication terminal, a call is made. If the other party's mobile communication terminal has been turned off, or if the other party's mobile communication terminal has been out of reach of the mobile communication system, a message to that effect is called. If you want to send a voice message such as a message to the other party's mobile communication terminal, the voice message is recorded in the answering machine service equipment or voice mail service equipment provided in the system. You.

[0003] Thereafter, after the power of the mobile communication terminal of the other party is turned on or when the mobile communication terminal of the other party enters a place where radio waves of the mobile communication system can reach, a notification from the fixed communication station or An inquiry from the mobile communication terminal or the like notifies the mobile communication terminal that a message message addressed to the mobile communication terminal has been recorded in the voice mail service facility. The notified mobile communication terminal indicates to the user that the message is present, and the user calls the voice mail service facility, retrieves the recorded message, and listens to the content. .

[0004]

However, in the above-mentioned conventional mobile communication terminal and mobile communication system, a facility of a voice mail service for storing voice messages such as messages is installed in the mobile communication system. In order to use the voice mail service, the mobile communication terminal service cannot be used unless the mobile communication system administrator has applied for and registered the service.

[0005] The present invention has been made in view of the above points,
A mobile service that can use voice messages as voice mail without applying for and registering the use of the service with the mobile communication system administrator, that is, without going through the voice mail service equipment installed in the mobile communication system. It is an object to provide a mobile communication terminal and a mobile communication system.

Another object of the present invention is to provide a mobile communication terminal capable of transferring a voice message as a voice mail by utilizing an e-mail function via the Internet or an e-mail function supported by a personal computer communication system. And a mobile communication system.

[0007]

To achieve the above object, a mobile communication terminal according to the present invention comprises: a transmitter for inputting a voice message; a receiver for outputting a received voice message as voice; A voice codec unit that encodes a voice message from a transmitter during transmission to generate voice-encoded data, and that receives a voice message, decodes a received signal, decodes the received signal into a received voice message, and outputs the received message to a receiver. A non-speech data processing unit that performs a process for sending and receiving non-speech data between the data terminals, and a binary-to-text conversion process on speech coded data from the speech codec unit when sending a speech message. The attached data is attached to the other party's e-mail and output.When receiving a voice message, check that the e-mail addressed to itself has arrived. When the voice message file attached to the e-mail received from the mail server is sent to the voice codec, the control unit outputs text-binary converted data to the voice codec. An electronic mail is wirelessly transmitted from the control unit, and a transmission / reception means for receiving an electronic mail addressed to itself from the mail server when receiving a voice message and outputting the electronic mail to the control unit is provided.

Here, the control unit stores a key input unit including at least a dial key and a power switch, and stores an access point number, mail server information and e-mail address information of a destination when e-mail is transmitted and received. A first memory unit that stores voice-encoded data from a voice codec unit or received e-mail addressed to itself, and performs binary-text conversion data or text-binary conversion processing. A second memory unit for storing data; a display unit for displaying a message or a telephone number; and a binary-to-text conversion process for voice-encoded data stored in the second memory unit when transmitting a voice message. The data stored in the second memory unit is stored in the second memory unit, and the binary data from the second memory unit is stored using information from the first memory unit. -Generate and output the e-mail of the destination with the data obtained by the text conversion processing attached.When receiving a voice message, check whether the e-mail addressed to itself has arrived. The voice message file attached to the e-mail received and stored in the second memory unit is extracted and text-
It is characterized in that it is configured to include a control unit that performs a binary conversion process and outputs data obtained by the text-binary conversion process to an audio codec unit.

To achieve the above object, a mobile communication system according to the present invention comprises a transmitter for inputting a voice message, a receiver for outputting a received voice message as voice, and a transmitter for transmitting a voice message. A voice codec unit that encodes a voice message from a speaker into voice-encoded data, decodes a received signal when receiving a voice message, decodes the received signal into a received voice message, and outputs the received voice message to a receiver;
A non-speech data processing unit that performs a process for sending and receiving non-speech data between connected data terminals, and a binary-text conversion process on speech coded data from a speech codec unit when sending a speech message. Attach the acquired data to the other party's e-mail and output it.When receiving a voice message, check whether the e-mail addressed to the user has arrived, and if so, attach it to the e-mail received from the mail server A control unit for outputting data obtained by subjecting the text-to-binary conversion processing to the voice message file to the voice codec unit, and connecting to the Internet when transmitting the voice message, wirelessly transmitting an e-mail from the control unit, When receiving a voice message, a transmitting / receiving means for receiving an e-mail addressed to itself from the mail server and outputting the received e-mail to the control unit. One or two or more mobile communication terminals, a wireless base station for performing wireless communication between the mobile communication terminals, a carrier network wired to the wireless base station, and an SP server in the carrier network And the Internet connected via the Internet.

In the mobile communication terminal and the mobile communication system of the present invention, the transmission and reception of voice messages is supported by an electronic mail (so-called E-mail) function via the Internet and a personal computer communication system, which have been rapidly spread recently. Since the e-mail function is used, a voice message can be transferred as an attachment to an e-mail via a mail server connected to the Internet or a host computer for personal computer communication.

[0011]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of an embodiment of a mobile communication terminal according to the present invention. In FIG. 1, a mobile communication terminal 1 includes a wireless communication unit 10 and a control unit 20. The wireless communication unit 10 includes a transmitting / receiving unit 12 for wirelessly transmitting and receiving voice data and non-voice data via an antenna 11, and a digital modulation / demodulation unit 1 for demodulating a received digital signal and modulating a transmitted digital signal.
3, a frame processing unit 14, a voice codec unit 15,
The receiver 1 connected to the voice codec unit 15
6 and a transmitter 17 and a non-speech data processing unit 18.

The frame processing section 14 decomposes the received digital data into components, and organizes the digital data to be transmitted into a predetermined data configuration. The voice codec unit 15 converts a voice portion of a digital signal received in the case of voice communication into an analog signal, and converts an analog voice signal to be transmitted into digital data. The non-speech data processing unit 18 extracts a non-speech data portion of the digital signal received in the case of non-speech communication, and converts the non-speech data part into a digital signal for a data terminal such as a PC (personal computer) connected to the mobile communication terminal 1. Format conversion is performed, and a digital signal received from a data terminal such as a PC connected to the mobile communication terminal 1 is format-converted into a digital signal in a wireless section.

The control unit 20 mainly comprises a control unit 21 for monitoring and controlling the entire operation of the mobile communication terminal 1. The control unit 21 includes dial keys (not shown) and operation mode selection. A key input unit 22 having a key, an automatic call key, a power switch, and the like, and an SP (Service Provider) to which the user has subscribed, such as his / her own ID code information and the like, access point numbers and mail server information for sending and receiving e-mails. And) a non-volatile memory unit 23 for storing information, e-mail address information of the other party, etc., and digital data or the like after band compression / speech encoding or band expansion / speech decoding before performing voice message transmission / reception operations. A memory unit 24 for storing, a speaker 25 for notifying a call, and a display unit for displaying operation messages, notification messages, telephone numbers, and the like. 26 are connected.

In this embodiment, at the time of transmitting a voice message, first, a voice message to be transmitted to a destination input through the transmitter 17 is once transmitted to the voice codec unit 15.
After the band is compressed and voice-coded according to the format transferred in the wireless section of the mobile communication system, that is, a predetermined voice coding algorithm, the digital data is stored in the memory unit 24 as a group of digital data. Next, a group of band-compressed and voice-encoded digital data stored in the memory unit 24 is considered as one voice message file (binary file), and the group is subjected to a binary-text conversion process (such as UENNCODE, Base64, or ISH). (Using a conversion algorithm), and then sends it to the destination e-mail address entered by the user of the mobile communication terminal 1 in a form attached to the e-mail.

It is assumed that SP (Service Provider) information subscribed to by the user, such as an access point number and mail server information at the time of transmitting an e-mail, is set in the nonvolatile memory unit 23 in advance, and the information is stored in the nonvolatile memory unit 23. It is transmitted by the mailer function implemented in the control unit 21 and the non-voice data processing unit 18 of the mobile communication terminal. Also, a SUBJECT name indicating that a voice message file is attached is added to the mail header portion of the e-mail to be transmitted.

At the time of receiving a voice message, the nonvolatile memory unit 2 is controlled by the mailer function realized in the control unit 21 and the non-voice data processing unit 18 of the mobile communication terminal.
3. The user preset in step 3 accesses the mail server in accordance with the subscribed SP information, and confirms whether an e-mail with a mail header indicating that a voice message file is attached has arrived at the user. ,
If it has arrived, the corresponding e-mail is received from the mail server, the attached voice message file is subjected to text-binary conversion processing, and then expanded on the memory unit 24. A group of digital data developed on the memory unit 24 is subjected to band expansion / speech decoding by the speech codec unit 15 according to a fixed speech decoding algorithm, and then output to the outside through the receiver 16 as speech.

FIG. 2 is a schematic block diagram of one embodiment of the mobile communication system according to the present invention. In FIG. 1, a communication carrier network 3 connected to each telephone terminal by wire includes:
A plurality of wireless base stations 2A, 2B, and 2C are connected by wire, and these wireless base stations 2A, 2B, and 2C can wirelessly communicate with a plurality of mobile communication terminals 1A, 1B, and 1C, respectively. The mobile communication terminals 1A, 1B, and 1C are mobile communication terminals of the present invention each having the configuration shown in FIG. Also, in FIG.
Can exchange information with the Internet 5 via the SP server 4 installed at the access point of the SP.

Next, the operation of the embodiment of the present invention will be described with reference to FIG. 3 which is an explanatory diagram of an operation procedure executed when the mobile communication terminal transmits a voice message, and FIG. 4 which is executed when the mobile communication terminal receives a voice message. The operation procedure will be described with reference to FIG.

First, a case where a voice message is transmitted from a mobile communication terminal 1 according to an embodiment of the present invention to a destination will be described with reference to FIGS. When the user of the mobile communication terminal 1 requests the start of the voice message transmission function via the key input unit 22 (Step 101 in FIG. 3), the control unit 21 displays a message prompting the input of the voice message on the display unit 26. (Step 10 in FIG. 3)
2).

Thereafter, when the user starts inputting a voice message to be transmitted to the other party through the transmitter 17 (step 103 in FIG. 3), the voice message is transferred by the voice codec unit 15 in the wireless section of the mobile communication system. Is converted into digital data which has been subjected to band compression and voice coding according to a predetermined voice coding algorithm (step 104 in FIG. 3).

The control section 21 receives a group of digital data converted by the audio codec section 15 and stores it in the memory section 24. The control unit 21 considers a group of digital data stored in the memory unit 24 as one binary file, and performs a binary-text conversion process (using a conversion algorithm such as UENCODE, Base64, or ISH) on the group, It is stored in the memory unit 24 (step 106 in FIG. 3). After that, the control unit 21
Displays a message prompting the user to input or select an e-mail address of the other party on the display unit 26, and waits for completion of the input or selection operation from the user (step 107 in FIG. 3).

Thus, when the user inputs or selects an e-mail address (step 108 in FIG. 3), the control unit 21 sets the e-mail address of the other party and the non-volatile memory unit 23 in advance. SP (Servic) to which the user subscribes when sending e-mail
e Provider), a mail header portion is created based on the mail server information included in the information, and the mail header portion is combined with a group of binary-text converted digital data stored in the memory portion 24 in the previous processing, and is used for transmission. An e-mail is created and stored in the memory unit 24 (step 10 in FIG. 3).
9).

A SUBJECT name indicating that a voice message file is attached is added to the mail header. Thereafter, non-voice communication is started toward an access point number preset in the nonvolatile memory unit 23, and the display unit 26 indicates that a voice message is being transmitted (step 110 in FIG. 3).

In the non-voice communication, a transmitting / receiving unit 12 for wirelessly transmitting / receiving non-voice data via an antenna 11, a digital modulation / demodulation unit 13 for demodulating a received digital signal and modulating a transmitted digital signal, and transmitting / receiving digital data. A frame processing unit 14 for decomposing each component and organizing digital data to be transmitted into a predetermined data configuration; a data terminal such as a PC connected to the mobile communication terminal 1 for extracting a non-voice data portion of a received digital signal; A non-voice data processing unit 18 converts the format of the digital signal received from a data terminal such as a PC connected to the mobile communication terminal 1 into a digital signal of a radio section. Is executed. First, the wireless section line setting and the wireless base Wire section line setting up the access point is performed from the station (step 111 of FIG. 3).

After the line setting is completed, a setting procedure such as a communication speed and a communication format in the non-voice data communication is executed (FIG. 3).
Step 112) After completion, a PPP (Point to Point Protocol) for connecting to the Internet from a telephone line
An Internet connection protocol such as l) is established (step 113 in FIG. 3). After establishing the Internet connection protocol, SM with the mail server in the SP
The e-mail created in the above process is transmitted to the mail server using an e-mail transfer protocol such as TP (Simple Mail Transfer Protocol) (steps 114 and 115 in FIG. 3). After the transmission of the e-mail, the Internet connection protocol is terminated (step 1 in FIG. 3).
16, 117). Thereafter, the lines in the wireless section and the wired section are disconnected (step 118 in FIG. 3), a message indicating the end of the voice message transmission is displayed on the display unit 26, and the user is notified of the end of the voice message transmission (FIG. 3).
Step 119).

Next, a case where the mobile communication terminal 1 according to one embodiment of the present invention receives a voice message sent to itself will be described with reference to FIGS. 1 and 4.
When the user of the mobile communication terminal 1 issues a request to start the voice message receiving function via the key input unit 22 (Step 201 in FIG. 4), the control unit 21 displays a message indicating that the voice message is being received on the display unit 26 ( Along with step 202) in FIG. 4, non-voice communication is started based on the access point number preset in the nonvolatile memory unit 23 and the mail server information included in the SP information subscribed to by the user.

In the non-voice communication, a transmitting / receiving section 12 for wirelessly transmitting / receiving non-voice data via an antenna 11, a digital modulation / demodulation section 13 for demodulating a received digital signal and modulating a transmitted digital signal, and transmitting / receiving digital data. A frame processing unit 14 for decomposing each component and organizing digital data to be transmitted into a predetermined data configuration; a data terminal such as a PC connected to the mobile communication terminal 1 for extracting a non-voice data portion of a received digital signal; A non-speech data transmission / reception unit 18 converts the format of a digital signal received from a data terminal such as a PC connected to the mobile communication terminal 1 into a digital signal in a wireless section. Is executed. First, the wireless section line setting and the wireless base Wire section line setting up the access point is performed from the station (step 203 of FIG. 4).

After the line setting is completed, a setting procedure such as a communication speed and a communication format in the non-voice data communication is executed (FIG. 4).
Step 204). After completion, an Internet connection protocol such as PPP for connecting to the Internet from a telephone line is established (Step 205 in FIG. 4). After the establishment of the Internet connection protocol, it is confirmed whether an e-mail has arrived at itself using an e-mail transfer protocol such as POP (Post Office Protocol) with a mail server in the SP ( Step 206 in FIG. 4).

When an e-mail addressed to the user has arrived on the mail server, the SUBJECT part of the mail header part of the received e-mail is checked (step 207 in FIG. 4), and the e-mail to which the voice message file is attached is checked. It is checked whether it is a mail, and if it is an e-mail to which a voice message file is attached, the e-mail is received and stored in the memory unit 24 (step 20 in FIG. 4).
8).

After the reception of the e-mail is completed (step 209 in FIG. 4), the Internet connection protocol is terminated (step 210 in FIG. 4), and the wireless and wired sections are disconnected (step 211 in FIG. 4). Thereafter, the control unit 21 extracts a voice message file attached to the electronic mail stored in the memory unit 24 (step 212 in FIG. 4), and performs a text-binary conversion process (UUDCODE, B
(using a conversion algorithm such as ase64 or ISH)
And develop it on the memory unit 24 (step 2 in FIG. 4).
13).

Thereafter, a message indicating the end of the voice message reception is displayed on the display unit 26 (step 2 in FIG. 4).
14). Subsequently, in response to a voice message output request from the user (step 215 in FIG. 4), the control unit 21
The transfer of a group of digital data expanded on the memory unit 24 to the audio codec unit 15 is started (step 216 in FIG. 4), and the audio codec unit 15 performs band expansion and audio decoding according to a predetermined audio decoding algorithm. Later (step 217 in FIG. 4), it is output to the outside as voice through the receiver 16 (step 218 in FIG. 4).

As described above, in this embodiment, the electronic mail function via the Internet 5 and the personal computer communication system are supported without applying and registering the use of the voice mail service to the administrator of the mobile communication system. By using the e-mail function, a voice message can be transferred in a form attached to the e-mail via a mail server connected to the Internet 5 or a host computer for personal computer communication.

[0033]

As described above, according to the present invention,
By using the e-mail function via the Internet (so-called E-mail) function and the e-mail function supported by the personal computer communication system, which has recently become widespread, a mail server connected to the Internet and a host computer for personal computer communication can be used. Voice messages are attached to e-mails via the Internet, so they can be installed in the mobile communication system without applying and registering the use of the voice mail service to the mobile communication system administrator. Voice messages can be sent and received without going through voice mail service facilities.

Further, according to the present invention, since a plurality of mail addresses can be designated as a destination mail address in an electronic mail, the same voice message can be simultaneously transferred to a plurality of mobile communication terminals.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of a mobile communication terminal according to the present invention.

FIG. 2 is a schematic configuration diagram of an embodiment of a mobile communication system according to the present invention.

FIG. 3 is an explanatory diagram of an example of an operation procedure executed when transmitting a voice message according to the embodiment of the present invention;

FIG. 4 is an explanatory diagram of an example of an operation procedure executed when receiving a voice message according to the embodiment of the present invention;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 mobile communication terminal 1A, 1B, 1C mobile communication terminal 2A, 2B, 2C wireless base station 3 carrier network 4 SP server 5 Internet 10 wireless communication unit 11 antenna 12 transmission / reception unit 13 digital modulation / demodulation unit 14 frame processing unit Reference Signs List 15 voice codec section 16 receiver 17 transmitter 18 non-voice data processing section 20 control device section 21 control section 22 key input section 23 non-volatile memory section 24 memory section 25 speaker 26 display section

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) H04M 1/65 H04L 11/20 101B 9A001 3/42 F term (reference) 5B089 GA11 GA25 GB04 HA10 HA11 JA31 JB01 KA13 KB06 KH16 LA11 LA18 LB04 LB10 LB13 5K024 AA35 AA41 AA71 BB05 CC11 5K030 HA06 HB01 HC01 HC09 JL01 JT01 JT09 KA06 KA19 5K039 BB04 FF14 5K101 KK02 LL12 QQ02 QQ08 9A001 BB02 BB03 BB02 BB02 BB02 BB02 DD03

Claims (6)

[Claims] 1. A transmitter for inputting a voice message, a receiver for outputting a received voice message as voice, and when transmitting a voice message, the voice message from the transmitter is coded into voice coded data. At the time of receiving a voice message, a voice codec unit that decodes a received signal, decodes the received signal into a received voice message, and outputs it to the handset, and a non-voice data transmission / reception process between a connected data terminal. A voice data processing unit, when transmitting a voice message, attaches and outputs data obtained by performing a binary-text conversion process on the voice encoded data from the voice codec unit to an electronic mail of the other party, When receiving a message, check that the e-mail addressed to you has arrived.If so, add it to the e-mail received from the mail server. A control unit for outputting data obtained by subjecting a text-to-binary conversion process to a voice message file to the voice codec unit, and when transmitting a voice message, wirelessly transmitting an e-mail from the control unit after connecting to the Internet. And a transmitting / receiving means for receiving an electronic mail addressed to itself from a mail server when receiving a voice message, and outputting the received electronic mail to the control unit. 2. The control unit stores a key input unit including at least a dial key and a power switch, and stores an access point number, mail server information, and e-mail address information of a destination when e-mail is transmitted and received. A first memory unit which stores the voice-encoded data from the voice codec unit or the received e-mail addressed to itself, and performs the data obtained by the binary-text conversion process or the text-binary conversion process. A second memory unit for storing the received data, a display unit for displaying a message and a telephone number, and a second unit for transmitting a voice message.
The data obtained by performing a binary-to-text conversion process on the voice-encoded data stored in the memory unit is stored in the second memory unit, and the information from the first memory unit is used to store the data. 2. Generate and output an e-mail of the destination to which the data obtained by performing the binary-text conversion processing from the memory unit 2 is attached, and when receiving the voice message, confirm whether the e-mail addressed to itself is received, If it has arrived, the voice message file received from the mail server and attached to the electronic mail stored in the second memory unit is extracted and subjected to text-binary conversion processing, and the text-binary conversion processing is performed. The mobile communication terminal according to claim 1, further comprising a control unit that outputs data obtained by the control unit to the voice codec unit. 3. A voice message file based on an e-mail address of a destination and mail server information included in SP information subscribed to by a user when transmitting a predetermined e-mail. 2. A mobile body according to claim 1, wherein a mail header portion indicating that the message is attached is created, and the data is combined with data obtained by the binary-text conversion processing to create an electronic mail for transmission. Communication terminal. 4. The control unit checks the mail header part of the received e-mail addressed to itself, checks whether a voice message file is attached, and when the voice message file is attached, the control unit checks the electronic mail. 2. The mobile communication terminal according to claim 1, wherein a voice message file portion is extracted from the mail and the text-binary conversion process is performed. 5. A transmitter for inputting a voice message, a receiver for outputting a received voice message as voice,
When transmitting a voice message, the voice message from the transmitter is coded as voice coded data. When receiving a voice message, a voice codec unit that decodes a received signal to decode the received voice message and outputs the received voice message to the receiver. A non-speech data processing unit for performing a process for sending and receiving non-speech data between connected data terminals, and a binary-text for speech encoded data from the speech codec unit when sending a speech message. The data obtained by the conversion processing is attached to the e-mail of the other party and output, and at the time of receiving the voice message, it is checked whether the e-mail addressed to itself has been received. Data obtained by subjecting a voice message file attached to an e-mail to text-binary conversion processing to the voice codec unit A control unit for transmitting a voice message, wirelessly transmitting an e-mail from the control unit after connection to the Internet, and receiving an e-mail from a mail server when receiving a voice message. One or more mobile communication terminals having a configuration having transmission / reception means for outputting to a unit, a radio base station for performing radio communication between the mobile communication terminals, and a communication carrier wired to the radio base station A mobile communication system comprising: a network; and the Internet connected to the carrier network via an SP server. 6. A control unit of the mobile communication terminal includes: a key input unit including at least a dial key and a power switch; an access point number and mail server information for transmitting and receiving an electronic mail; and an electronic mail address of a destination. A first memory unit for storing information, and voice-encoded data from the voice codec unit or the received e-mail addressed to itself, and data or text obtained by the binary-text conversion process. A second memory unit for storing the data subjected to the binary conversion processing, a display unit for displaying a message or a telephone number, and, when transmitting a voice message, the voice encoded data stored in the second memory unit. The data obtained by performing the binary-text conversion processing is stored in the second memory unit, and the information from the first memory unit is used. Generates and outputs an e-mail of the other party to which the data obtained by performing the binary-text conversion processing from the second memory unit is attached. When the voice message is received, whether the e-mail addressed to itself is received. And if it has arrived, receive it from the mail server and
A control unit for extracting a voice message file attached to an e-mail stored in the memory unit of the above, performing a text-binary conversion process, and outputting data obtained by the text-binary conversion process to the voice codec unit 6. The mobile communication system according to claim 5, comprising: