KR20050056035A - Method and apparatus of transmitting numerical message for mobile phone - Google Patents

Abstract

The present invention transmits a numeric message using a DMP scheme of a mobile terminal and displays the received message on a display unit. The switching unit sets a corresponding communication path according to an incoming call setup request signal; A controller which analyzes a signal applied to a communication path of the switching unit and separates an analog and digital signal and outputs it to each path when the DFM signal is input; An AD unit which is connected to the control unit and converts the DFM signal to digital when it is applied as an analog; A number detector which detects the DMT signals applied from the AD unit with the respective digital filters, converts the matrix signals into digital DFM signals, and outputs them to the digital DFM signals; And a matching unit for outputting the digital DTMP number signals respectively applied from the control unit and the number detecting unit in a matching state, and further comprising: a preparation process of determining whether to transmit a numeric message while performing communication with the portable terminal; An input process of inputting a numeric message to be transmitted by the selected numeric message menu when transmitting the numeric message in the process; If the mobile terminal is a digital method, it is digital, and if it is an analog method, it is characterized by a transmission process for transmitting a DFM signal in analog and terminating communication.

Description

Device and method for transmitting numeric message of mobile terminal {METHOD AND APPARATUS OF TRANSMITTING NUMERICAL MESSAGE FOR MOBILE PHONE}

The present invention is to display and record the numeric message transmitted from the mobile terminal at the receiving side of the infant, in particular, the mobile terminal for transmitting the numeric message correctly and without error in the DMP message, and automatically display and record the storage to the infant at the receiving side The present invention relates to an apparatus and a method for transmitting a numeric message.

A mobile terminal (UE: USER EQUIPMENT) freely moves within a service area formed by a base station (BS) of a registered mobile communication system, and establishes a communication path for controlling and monitoring a mobile switching station (MSC). It is a device that wirelessly connects and communicates with the other party through a person, and the individual carries it directly and immediately wirelessly communicates with the other party anytime and anywhere.

The mobile terminal (UE) has a conventional analog (ANALOG) method, there is a recent digital (DIGITAL) method, it is necessary to ask or teach a specific phone number required when communicating with the other party with the portable terminal. In the case of notifying the telephone number as described above, a voice signal is notified, and therefore, there is a problem of incorrectly recognizing the noise due to the surrounding noise and communicating again for confirmation.

Therefore, there is a need to develop a technique for accurately transmitting a simple numeric message such as a telephone number to a mobile terminal with a mobile terminal.

Hereinafter, a numerical message transmission technique of a mobile terminal according to the prior art will be described with reference to the accompanying drawings.

1 is a functional configuration diagram of a general mobile communication system, and FIG. 2 is a flowchart of a numerical message transmission method of a mobile terminal according to the prior art.

Referring to FIG. 1, a general mobile communication system will be described. The mobile terminal 10 can freely enter a service area formed by a base station (BS) 20 of a registered and registered mobile communication system. Anytime, anywhere, while moving, wireless connection with the other party immediately, the existing analog (ANALOG) method and the latest digital (DIGITAL) method is used together.

The base station 20 communicates wirelessly with the mobile terminal 10, and wirelessly receives and transmits a communication signal to form a service area. In general, the base station 20 provides a service area nationwide by a plurality of consecutive numbers. And controlled by the control and monitoring of the mobile switching center (30).

The MSC 30 analyzes and switches the call connection request signal applied from the mobile terminal 10 through the base station 20 to set a communication path, and establishes a communication path. May be subscribed to its own network operated by the mobile switching center 30, but may be subscribed to another communication network, and when the call requesting party is subscribed to another communication network, the communication path is established through the public network 40. Set up and connect to communicate.

The public network 40 includes a PUBLIC SWITCHING TELEPHONE NETWORK (PSTN), a PUBLIC SWITCHING DATA NETWORK (PSDN), and the Internet (INTERNET). Set and transmit the communication signal.

Hereinafter, with reference to the accompanying FIG. 2, a numerical message transmission method of a mobile terminal according to the prior art will be described.

While proceeding with the communication to the mobile terminal (10) (S10), it is determined whether or not to memorize the phone number received from the other party (S20), to memo the phone number received by voice in the determination (S20) (MEMO) In this case, a memo menu is selected and input from a plurality of service menus (MENU) provided in the mobile terminal 10 (S30).

In the step S30, the memo menu selected by the memo menu, such as a telephone number received as a voice signal during a call, is recorded and stored as a memo (S40), and when the communication is terminated (S50), the recorded memo is searched for Check (S60).

In the prior art of the above configuration, in order to record and store a numeric message such as a phone number received from a counterpart in a voice communication process, selecting a memo menu of the mobile terminal, and recording and storing the number, which is transmitted as the voice signal Numerical information of the telephone number has a problem that is difficult to accurately check due to noise or noise generated in the vicinity.

In addition, there is a problem such as the recognition of the wrong number by the accent of the person speaking the phone number by the voice signal or the dialect and the degree of understanding of the listener.

The present invention solves the problem of incorrect recognition due to ambient noise, noise and intonation, because when transmitting a numeric message such as a telephone number to a mobile terminal by using a DMT tone signal and the display side by using a display unit on the receiving side It is an object of the present invention to provide an apparatus and method for transmitting numeric messages in a mobile terminal.

The present invention has been made in order to achieve the above object, in the mobile switching station for controlling and monitoring the entire operation of the mobile communication system comprising a mobile terminal and a base station and setting the communication path by switching; A switching unit for setting a corresponding communication path according to an input call establishment request signal; A controller which analyzes a signal applied to a communication path of the switching unit and separates an analog and digital signal and outputs it to a respective path when a DFM signal is input; An AD unit which is connected to the control unit and converts the DFM signal to digital when an analog signal is applied as an analog; A number detector which detects the DTMP signal applied from the AD unit with each digital filter, converts the matrix signal into a digital DTMP numeric signal, and outputs the matrix signal; And a matching unit for outputting the digital DTMP number signals respectively applied from the control unit and the number detection unit in a matching state.

In addition, the present invention devised to achieve the above object, the preparation process for determining whether to transmit a numeric message while communicating with the mobile terminal; An input process of inputting a numeric message to be transmitted by the selected numeric message menu when transmitting the numeric message in the process; When the portable terminal is a digital method, it is characterized by consisting of a transmission process for transmitting a DTF signal in analog and digitally analog if the analog method.

In addition, the present invention has been made in order to achieve the above object, the call process for switching and setting the call requested by the mobile terminal by the mobile switching station and communication; A detection step of determining whether an analog signal is detected when a numeric message DFM signal is detected among the signals transmitted through the call set in the above step; A conversion process of converting the digital signal into a digital signal and detecting a digital signal by the digital DT if it is determined in the above process; And outputting the digital DTMP number signal detected in the process to an ongoing communication call and determining whether the communication is terminated.

In addition, the present invention has been made in order to achieve the above object, the receiving process of determining whether to receive and input a numeric message while communicating with the portable terminal; In the process of receiving and inputting a numeric message in the process, the infant process to detect the numeric message from the DFM signal received by the selected numeric message receiving menu and display on the display unit; In the case of recording and storing the numerical message of the above process, it is characterized in that it consists of a recording process of recording and storing in the corresponding memory and determining whether the communication is terminated.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, an apparatus and method for transmitting a numeric message of a mobile terminal will be described with reference to the accompanying drawings.

3 is a functional configuration diagram of a mobile switching center apparatus for transmitting a numeric message of a mobile terminal of the present invention, and FIG. 4 is a detailed functional configuration diagram of a number detection unit of a mobile switching station according to the present invention. 5 is a flowchart of a method of transmitting a numeric message of a mobile terminal of the present invention, FIG. 6 is a flowchart of a method of transmitting a numeric message of a mobile switching station of the present invention, FIG. 7 is a flowchart of a method of receiving a numeric message of a mobile terminal of the present invention, and FIG. This is a format diagram of the DTF burst message transmitted.

3 and 4, a mobile switching center apparatus for transmitting a numeric message of a mobile terminal according to the present invention will be described.

In a mobile switching station (MSC) 100, which controls and monitors the entire operation of a mobile communication system including a mobile terminal (UE) and a base station (BS), and establishes a communication path by switching.

A switching unit 110 for setting a communication path between a call side and a called side by an input call setup request signal;

Analyzing the signal applied to the communication path of the switching unit 110 and when the DTMF (DUAL TONE MULTI FREQUENCY) signal is input, it is divided into analog (ANALOG) and digital (DIGITAL) signal, each path (PATH) A control unit 120 for outputting to the matching unit 170 if the applied signal is a digital DT signal, and outputting to the AD unit 130 if an analog DFM signal;

An AD (ANALOG TO DIGITAL CONVERTER) unit 130 which is connected to the control unit 120 and converts and outputs a digital signal when the DFM signal is applied as an analog;

Detecting the DFM signal applied from the AD unit 130 with each digital filter and processing the matrix to convert the digital DFM signal into a digital signal. The digital 1633 HZ signal is band-passed. A first filter 151 to pass through, a second filter 152 to band pass a digital 1447 HZ signal, a third filter 153 to band pass a digital 1336 HZ signal, and a band pass through a digital 1209 HZ signal A fourth filter 154, a fifth filter 155 for band-passing the digital 697 HZ signal, a sixth filter 156 for band-passing the digital 770 HZ signal, and a seventh filter for band-passing the digital 852 HZ signal 157 and an eighth filter 158 for band-passing the digital 941 HZ signal to filter the digital signal applied from the AD unit 130 to the respective band-pass digital filters to convert the digital signal into the respective frequency band signals. minute A filter unit 150 for redetecting; Numeral detection unit 140 comprising a matrix unit 160 for separating and applying the signals separated from the filter unit 150 into respective frequency band signals by performing matrix synthesis and outputting them as digital DTMF numeric signals. Wow,

And a matching unit 170 for outputting the digital DTMP number signals respectively applied from the control unit 120 and the number detection unit 140 to a matching state.

Hereinafter, according to the present invention having the above-described configuration, it will be described in detail with reference to the accompanying drawings, a numerical message transmission apparatus of a mobile terminal.

When the numeric message by the DMP method from the mobile terminal (UE) is applied to the mobile switching center 100 through the base station (BS), the switching unit 110 switches the number through the communication path set for switching communication The message is transmitted to the control unit 110.

The controller 120 determines whether the input numeric message is an analog signal or a digital signal, and outputs the digital message to the matching unit 170 if the digital message is a digital signal, and outputs the analog message to the AD unit 130.

The AD unit 130 converts the input analog signal into a digital signal and outputs the digital signal. The AD unit 130 is applied to the filter unit 150 of the number detector 140.

The filter unit 150 includes a first filter 151 for band-passing a digital 1633 HZ signal, a second filter 152 for band-passing a digital 1447 HZ signal, and a band-pass for digital 1336 HZ signal. A third filter 153, a fourth filter 154 for band-passing the digital 1209 HZ signal, a fifth filter 155 for band-passing the digital 697 HZ signal, and a band-passing digital 770 HZ signal And a sixth filter 156 to pass the digital 852 HZ signal, and a seventh filter 157 to band pass the digital 852 HZ signal, and an eighth filter 158 to pass the digital 941 HZ signal. Detect and output

The DTMF signal outputs one numeric message as a signal in which two frequencies are mixed. For example, if each number is represented by two frequencies, the following diagram is shown.

One 1209 HZ / 697 HZ 9 1477 HZ / 852 HZ 2 1336 HZ / 697 HZ 0 1336 HZ / 941 HZ 3 1477 HZ / 697 HZ A 1633 HZ / 697 HZ 4 1209 HZ / 770 HZ B 1633 HZ / 770 HZ 5 1336 HZ / 770 HZ C 1633 HZ / 852 HZ 6 1477 HZ / 770 HZ D 1633 HZ / 941 HZ 7 1209 HZ / 852 HZ # 1477 HZ / 941 HZ 8 1336 HZ / 852 HZ * 1209 HZ / 941 HZ

As described above, the digital frequency signal applied from the AD unit 130 is applied to the filter unit 150 of the number detecting unit 140, classified into respective frequencies, and detected, respectively, constituting the filter unit 150. The filter of outputs the value of the digital '1' to the matrix unit 160 when the digital frequency of the corresponding band BANDWIDTH is detected.

The matrix unit 160 performs matrix synthesis processing on digital values detected and applied from each filter of the filter unit 150, and outputs the digital values as digital signals.

The digital DTMP number signal synthesized from the matrix unit 160 is, for example, coded as shown in FIG. 8 and output to the matching unit 170.

Referring to the coded digital DTMP number signal of FIG. 8 as an example, the number '1' is encoded and output as the digital signal '0001'.

Hereinafter, a method of transmitting a numeric message of a mobile terminal according to the present invention will be described with reference to FIG. 5.

Determining whether to transmit a numeric message while performing communication with a mobile terminal for mobile communication, and performing communication of a voice level signal using the mobile terminal (UE) (S100); In the process (S100) and the preparation process consisting of the process of determining whether to send a numeric message to the other party during the communication (S110),

Inputting a numeric message to be transmitted by the selected numeric message menu when transmitting the numeric message in the preparation process, selecting and setting a numeric message transmission menu provided in the mobile terminal (UE) (S120); An input process including a process of inputting a numeric message transmitted through a menu set in the process S120 (S130);

Determining whether the portable terminal is a digital portable terminal by transmitting an analog DFM signal to a digital DFM signal when the portable terminal is a digital method and ending the communication when the analog method is used (S140); If it is determined that the digital portable terminal is determined in step S140, transmitting the input numerical message to the counterpart portable terminal as a digital DT signal (S150); If it is determined in step S140 that the digital mobile terminal is not a digital terminal, transmitting the input numerical message to the counterpart portable terminal as an analog DFM signal (S170); It is composed of a transmission process consisting of transmitting a numerical message of the process and determining whether or not the communication is terminated, and if it is not terminated (FEEDBACK) to the preparation process (S100) and terminates the ongoing communication if the communication is terminated (S160). .

Hereinafter, a method for transmitting a numeric message of a mobile terminal according to the present invention having the above configuration will be described in detail with reference to the accompanying drawings.

In the process of performing communication using the mobile terminal (UE) (S100), if you want to send a number message to the other party (S110), select and set the number message transmission menu provided in the mobile terminal (S120), Input the numeric message to be transmitted (S130).

When the mobile terminal UE is operated digitally (S140), the numeric message is transmitted as a digital DT burst message (BURST MESSAGE) (S150), and when operated in an analog manner (S140) If the communication is in progress (S170), the ongoing communication is returned to the preparation process (S100), and if not continued is terminated (S160).

Hereinafter, a method of transmitting a numeric message of a mobile switching station according to the present invention will be described with reference to FIG.

A call process (S200) for switching and setting up a call (SWITCH) requested by the mobile terminal (UE) by the mobile switching center (100);

If a numeric message DMP signal is detected from the signal transmitted through the call CALL set in the call process S200, it is determined whether the signal is an analog signal. Determining whether a numeric message is detected (S210); If the numeric message is detected in the step (S210) and the detection process consisting of the step of determining whether the analog signal (S220),

If the analog signal is determined in the detection process, the step of converting the analog signal into a digital signal by converting to a digital signal and detecting the digital signal by the digital demultiplexer (S230); A conversion process of converting and detecting a digital signal based on a filter (FILTER) and a matrix (MATRIX) by the process (S230) and converting the digital signal to a digital FM signal (S240);

Outputting the digital DTMP number signal detected in the conversion process to the ongoing communication call, and determining whether the communication is terminated, and outputting the detected signal converted to the digital DTMP number signal to the ongoing communication call. Transmitting to the counterpart (S250); It is determined whether the communication of the communication call is terminated and, if in progress, it consists of an output process consisting of a feedback (FEEDBACK) to the call process (S200) (S260).

Hereinafter, a method of transmitting a numeric message of a mobile switching center by the present invention having the above configuration will be described in detail with reference to the accompanying drawings.

The mobile switching center 100 allows communication between the calling mobile terminal and the called mobile terminal through a communication path established by call processing (S200), and the numeric message of the DMP transmitted through the communication path. If is detected (S210), it is determined whether the analog signal (S220).

If it is the analog signal in the determination (S220), and converts to a digital signal (S230), the converted digital signal is converted into a digital DFM message message by digital filter processing and matrix processing (S240), as described above Outputs the converted digital message message to the counterpart in the ongoing communication call to the other party (S250), and if the communication is not terminated by determining whether the communication is terminated, the feedback is returned to the call process (S200) and the communication ends. If so, the set call is recovered and blocked, and communication is terminated (S260).

Hereinafter, a method for receiving a numeric message of a mobile terminal of the present invention will be described with reference to FIG. 7.

Determining whether to receive and input a numeric message while performing communication with a mobile terminal (UE) for mobile communication, and performing communication of a voice level signal with a counterpart using the mobile terminal (UE) (S300); Receiving process comprising the step (S310) of determining whether or not to receive and input a numeric message from the other party during the communication in the process (S300),

When receiving and inputting a numeric message in the receiving process, the numeric message is detected from the DFM signal received by the selected numeric message receiving menu and displayed on the display unit. The numeric message receiving menu provided in the UE Selecting and setting (S320); Detecting a numeric message from the DFM signal received through the menu set in the step S320 (S330); Infant ear process comprising a process (S340) of displaying the numeric message detected in the process (S330) to the display unit (UI: USER INTERFACE),

When the infant records and stores the numerical message of the process, it is recorded and stored in the corresponding memory (MEMORY) and it is determined whether or not the communication is terminated. Determining (S350); If it is determined in the step S350 that the recording is to be stored, storing in the allocated area of the memory (S360); It is determined whether the ongoing communication is terminated and, if in progress, the recording process consisting of a feedback (FEEDBACK) to the receiving process (S300) (S370).

Hereinafter, according to the present invention having the above configuration, a method of receiving a numeric message of a mobile terminal will be described in detail with reference to the accompanying drawings.

The mobile terminal for mobile communication, in the course of the communication (S300), determines whether the numeric message signal by the SDT DTMF BURST MESSAGE is received (S310), the number in the determination (S310) When the message is received, the numerical message receiving menu provided in the mobile terminal is selected and set (S320).

The mobile terminal UE detects a numeric message from the received DTMF signal (S330), and displays the numeric message detected in the process (S330) on a corresponding display unit through a user interface (UI: USER INTERFACE). If (S340), if you want to record and store the numeric message detected and displayed as described above (S350), and record and store in the allocated area of the memory (S360), if the ongoing communication continues the receiving process (S300) ), And if communication does not continue (S370).

The present invention having the above-described configuration transmits a numeric message to the counterpart using a DT DTMF BURST MESSAGE in the AIR MESSAGE of the mobile communication, and the mobile terminal for transmitting the numeric message is operated in an analog manner If so, the mobile switching station converts the digital DTMP numeric message signal, and the receiving mobile terminal detects the numeric message, displays it as a UI, and records and stores it in the corresponding memory.

According to the present invention, the mobile terminal transmits a numeric message to the counterpart using a DTMF burst message in the mobile terminal, and displays the information through the child on the receiving side and records the data in the allocated memory area. It works.

In addition, the receiving side of the numeric message has a convenient effect in the display and easy to use and record through the infant.

1 is a functional configuration diagram of a general mobile communication system,

2 is a flowchart illustrating a numerical message transmission method of a portable terminal according to the prior art;

3 is a functional configuration diagram of a mobile terminal number message transmission mobile switching center of the present invention;

4 is a detailed functional block diagram of the number detecting unit of the mobile switching center according to the present invention;

5 is a flowchart of a method for transmitting a numeric message of a mobile terminal of the present invention;

6 is a flowchart of a method for transmitting a numeric message in a mobile switching station of the present invention;

7 is a flowchart illustrating a method for receiving a numeric message of a mobile terminal of the present invention;

8 is a format diagram of a DTF burst message transmitted in the present invention.

** Explanation of symbols on the main parts of the drawing **

100: mobile switching station 110: switching unit 120: control unit

130: AD unit 140: number detection unit 150: filter unit

160: matrix portion 170: matching portion

Claims (16)

In a mobile switching station that controls and monitors the entire operation of a mobile communication system including a mobile terminal and a base station and establishes a communication path by switching, A switching unit for setting a corresponding communication path according to an incoming call setup request signal; A controller which analyzes the signal applied to the communication path of the switching unit and separates the analog and digital signals into the respective paths when the DFM signal is input; An AD unit which is connected to the control unit and converts the DFM signal to digital when it is applied as an analog; A number detector for detecting and performing matrix processing of the DTP signals applied from the AD unit by converting them into digital DFM signals; And a matching unit for outputting a digital DTMP number signal applied from the control unit and the number detecting unit in a matching state, respectively. The method of claim 1, wherein the control unit, If the signal applied to the communication path formed by the switching unit is a digital DFM signal outputs to the matching unit, and if the analog DFM signal outputs the numeric message transmission device of the mobile terminal, characterized in that the configuration is configured to output . The method of claim 1, wherein the number detection unit, A filter unit for filtering the digital signal applied from the AD unit with a multiple band pass digital filter and separately detecting the signal into each frequency band signal; And a matrix unit configured to perform matrix synthesis processing on the signals applied separately from the filter unit into the respective frequency band signals and output the digital DTMP number signals. The method of claim 3, wherein the filter unit, A first filter for bandpassing the digital 1633 HZ signal, A second filter for bandpassing the digital 1447 HZ signal, A third filter for bandpassing the digital 1336 HZ signal, A fourth filter for band-passing the digital 1209 HZ signal, A fifth filter for bandpassing the digital 697 HZ signal, A sixth filter for bandpassing the digital 770 HZ signal, A seventh filter for bandpassing the digital 852 HZ signal, A digital message transmitting device for a portable terminal, characterized by comprising an eighth filter for bandpassing the digital 941 HZ signal. A preparation process for determining whether to transmit a numeric message while communicating with a mobile terminal, An input process of inputting a numeric message to be transmitted by the selected numeric message menu when transmitting the numeric message in the above process; The digital message transmission method of the digital terminal and the analog method if the digital terminal is a digital message transmission method for transmitting a DMP signal and terminating the communication, characterized in that consisting of. According to claim 5, The preparation process, Performing a communication of a voice signal using the portable terminal; And determining whether or not to transmit the numeric message to the counterpart during the communication process. The method of claim 5, wherein the input process, Selecting and setting a numeric message transmission menu provided in the mobile terminal; And a method of inputting a numeric message transmitted through a menu set in the above process. The method of claim 5, wherein the transmission process, Determining whether the portable terminal is a digital portable terminal; If the digital mobile terminal is determined in the determination process, transmitting the input numeric message to a counterpart mobile terminal as a digital DFM signal; If it is determined that the digital portable terminal is not in the determining process, transmitting the input numeric message to the counterpart portable terminal as an analog DMP signal; And transmitting the numerical message of the process and determining whether the communication is terminated, and if not, returning to the preparation process and ending the communication in progress if the communication is terminated. A call process for switching and setting up a call requested by a mobile terminal by the mobile switching center, and performing communication; A detection process of determining whether an analog signal is detected when a numeric message DFM signal is detected among the signals transmitted through the call set in the above process; A conversion process of converting the digital signal into a digital signal and detecting a numerical signal by the digital DTF if the analog signal is determined in the above process; And outputting the digital DTMP number signal detected in the process to an ongoing communication call and determining whether the communication is terminated. 10. The method of claim 9, wherein the detecting process, Determining, by the mobile switching center, whether a DTMF numeric message is detected through a call in communication; When the numeric message is detected in the process, the method comprising the step of determining whether the analog signal comprises a digital message transmission method of the mobile terminal. The method of claim 9, wherein the conversion process, Converting an input analog signal into a digital signal and outputting the same; And converting the digital signal into a digital DFM signal by detecting and filtering the digital signal according to the above process. The method of claim 9, wherein the output process, Outputting the detected signal converted into the digital FM signal to the ongoing communication call and transmitting it to a communication partner; It is determined whether the communication of the communication call is terminated, and if it is in progress, the numeric message transmission method of the mobile terminal, characterized in that the process consisting of a feedback process. A reception process of determining whether to receive and input a numeric message while performing communication with a mobile terminal; In the process of receiving and entering a numeric message in the process, the infant process to detect and display the numeric message from the DFM signal received by the selected numeric message receiving menu and display; When storing and storing the numeric message of the process, the method for recording a numeric message of the portable terminal characterized in that it consists of a recording process for determining whether the communication is terminated. The method of claim 13, wherein the receiving process, Performing a communication of a voice level signal with a counterpart using the mobile terminal; And determining whether to receive and input a numeric message from the counterpart during communication. The method of claim 13, wherein the infant ear process, Selecting and setting a numeric message receiving menu provided in the mobile terminal; Detecting a numeric message from the DFM signal received through the menu set in the above process; The digital message transmission method of the mobile terminal, characterized in that the process comprising the step of displaying the number message detected in the process as a child. The method of claim 13, wherein the recording process, Determining whether to record and store the numeric message displayed by the infant on the display unit of the portable terminal; If it is determined that the recording is to be stored in the process, storing and storing in the allocated area of the memory; Determining whether the ongoing communication is terminated, and if the communication is in progress, feeding back to the receiving process.