KR100709601B1 - Method for selective synchronizing of sim card and thereof portable terminal - Google Patents

Abstract

The present invention relates to a selective synchronization method of a SIM card and a portable terminal to which the same is applied.

The present invention comprises the steps of checking whether the unique number of the SIM card mounted when the mobile terminal is booted; If there is no change of the unique number, checking whether the status check counter of the SIM card is changed; And if there is no change of the state check counter, omitting information reading process of the SIM card and utilizing previous SIM card information stored in the main memory.

Handset, SIM, Phone Book, Sync, Load

Description

SIM card selective synchronization method and mobile terminal using the same {METHOD FOR SELECTIVE SYNCHRONIZING OF SIM CARD AND THEREOF PORTABLE TERMINAL}

1 is a view schematically showing a mobile terminal equipped with a SIM card according to an embodiment of the present invention;

2 is a diagram schematically illustrating an internal block configuration of a mobile terminal according to an embodiment of the present disclosure;

3 is a flowchart illustrating a SIM card synchronization method according to an embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal, and more particularly, to selecting a SIM card capable of reducing a phone book loading time stored in a record area of a subscriber identity module (SIM). A synchronization method and a portable terminal using the same.

In general, the SIM card is a module in the form of a card that can be used in a mobile phone and represents a chip that stores personal information to provide various services such as subscriber authentication, billing, and security functions. These SIM cards can be dialed to their phone numbers in any location, regardless of mobile phone technical specifications, such as Code Division Multiple Access (CDMA) or Global System for Mobile communication (GSM). It was developed to be able to use mobile phone freely.

The SIM card is manufactured in the form of a smart card and can be attached and detached using a port formed at one side of the portable terminal. Accordingly, the portable terminal equipped with the SIM card reads all information related to the SIM card at booting and performs authentication. For example, the SIM card loads phonebook information into the main memory and the controller of the portable terminal.

Specifically, the phone book information stored in the SIM card is turned on after the power of the portable terminal is turned off, or when the mobile terminal is newly booted by arbitrarily initializing the portable terminal. After reading the mounted port, all necessary information, for example, authentication information, phone book information, etc. are read from the currently installed SIM card through the port, and then registered in the main memory and the control unit.

Accordingly, the existing mobile terminal has to repeatedly read the SIM card every time upon initialization or booting, and load information accordingly, and thus, a very long time is required to actually boot and use the mobile terminal newly.

This problem is caused by the long time required for booting when the mobile terminal is initialized and rebooted during battery call during emergency call such as emergency call or very important business related call. May cause.

Therefore, the present invention was devised to solve the above-mentioned problems of the prior art, and an object of the present invention is to prevent unnecessary loading of the SIM card and loading of information when booting the mobile terminal, thereby reducing the booting time of the mobile terminal. The present invention provides a method and system for selective synchronization of a SIM card.

Another object of the present invention is a SIM card selective synchronization method that can reduce booting time by selectively performing the phone book data read and stored phone book data of the SIM card according to the information of the SIM card mounted in the mobile terminal. And providing a system.

Still another object of the present invention is to determine whether the SIM card information is changed by using the EFcc data information of the SIM card installed in the mobile terminal, and if the SIM card is changed, executes phone book data reads and the information of the SIM card. The present invention provides a method and system for selectively synchronizing a SIM card that can reduce booting time by applying previously stored phone book data when there is no change.

Method according to an embodiment of the present invention for achieving the above object, in the SIM card synchronization method in a mobile terminal, the step of confirming whether the unique number of the SIM card mounted when the portable terminal booting; ; If there is no change of the unique number, checking whether the status check counter of the SIM card is changed; And if there is no change of the state check counter, omitting information reading process of the SIM card and utilizing previous SIM card information stored in the main memory.

A mobile terminal according to an embodiment of the present invention for achieving the above objects, the SIM card is stored personal information; A port to which the SIM card is mounted and detached; A main memory into which personal information stored in the SIM card is loaded; And a controller configured to control the loading of the SIM card information into the main memory, wherein the controller is configured to change the unique number of the SIM card and the state check counter of the SIM card when the portable terminal is booted. The control of loading information of the SIM card into the main memory is selectively controlled.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, only the parts necessary for understanding the operation according to the embodiment of the present invention will be described, it should be noted that the description of other parts will be omitted so as not to distract from the gist of the present invention.

Prior to the description of the present invention, the terms or words used in the specification and claims described below should not be construed as being limited to the ordinary or dictionary meanings, and the inventors should consider their own invention in the best way. For the purpose of explanation, the terms should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention based on the principle that the terms can be properly defined.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

According to the present invention, a mobile terminal using a subscriber identity module (hereinafter, referred to as a SIM) card selectively loads information stored in a SIM card upon initial booting or reboot of the mobile terminal. The present invention proposes a SIM card selective synchronization method and a portable terminal using the same, which can reduce the time required for booting.

In the following, preferred embodiments of the present invention for reducing the time according to the loading of the information of the SIM card when the portable terminal is booted will be described with reference to the accompanying drawings.

Prior to the detailed description of the present invention, for convenience of description, a mobile terminal having a function according to an embodiment of the present invention will be described as an example of a mobile communication terminal, but the present invention is not limited thereto. That is, the portable terminal according to an embodiment of the present invention is a terminal for providing convenience to a user, and preferably, a mobile communication terminal, a mobile phone, a personal digital assistant (PDA) capable of mounting and detaching a SIM card. Will be applicable to all information communication and multimedia devices such as smart phones, IMT-2000 terminals, universal mobile telecommunication service terminals, and applications thereof. .

In addition, the present invention has been described by representing the SIM card information as phone book information, SIM card information may be stored a variety of personal information, such as certificate information, membership card information, electronic ticket information. In addition, the SIM card information includes various preset information including a code of the SIM card itself, that is, a SIM card authentication number.

However, hereinafter, information for reading from the SIM card will be described as phone book information for convenience of explanation. That is, in an embodiment of the present invention, information to be read from the SIM card will be represented by phone book information, but the information to be read is not limited to phone book information.

1 is a view schematically showing a portable terminal equipped with a SIM card according to an embodiment of the present invention.

Referring to FIG. 1, a portable terminal 1 according to an embodiment of the present invention includes a SIM card 10 in which phone book information PB_Info is stored; A port 20 into which the SIM card 10 can be mounted; A control unit 30 for reading the information of the SIM card 10 when the SIM card 10 is mounted in the port 20; And a main memory 40 for storing the phone book information PB_Info read by the controller 30, and a display unit 317 for displaying the phone book information PB_Info stored in the main memory 40. It may further include.

Here, the phone book information PB_Info represents information related to a phone book list prepared by the user who uses the mobile terminal 1 and other phone numbers. That is, the phone book information (PB_Info) includes a name, a telephone number (a mobile phone number, a home phone number, etc.), a brief information related to a home address and a name, for example, a birthday, an anniversary, and the like, designated by the user of the mobile terminal 1 It may also contain information that may be present.

In addition, the phone book information (PB_Info) may include a change in the ring tone assigned to each phone number or a list of unsubscribe for the specified phone number. The phone book information PB_Info may also include information about a group of each phone number, avatar information assigned to the phone number, shortcut information of the phone number, and the like.

Meanwhile, the phone book information PB_Info may store only a name and a phone number except for the above-described various optional functions.

The SIM card 10 is a module in the form of a card that can be used in a mobile terminal. The SIM card 10 represents a chip that stores personal information to provide various services such as subscriber authentication, billing, and security functions.

These SIM cards can be dialed to their phone numbers in any location, regardless of mobile phone technical specifications, such as Code Division Multiple Access (CDMA) or Global System for Mobile communication (GSM). Each unique number is assigned to enable the mobile phone to be used freely. The subscriber identification module for the universal mobile communication system (UMTS), which is the third generation of mobile communication, is also called a universal subscriber identity module (USIM).

As described above, the SIM card 10 has its own unique number (IC-CID), and this unique number (IC-CID) is assigned to each of the SIM cards 10. That is, when confirming whether the SIM card 10 mounted in the mobile terminal 1 is the same as the previous SIM card, it is possible by checking the unique number (IC-CID).

The SIM card 10 also includes a SIM field EFcc that changes in accordance with the case where the phone book data of the SIM card 10 is changed. The EFcc is an area allocated for indicating an increase in terminal resulting from all updates and removals existing in the entry of a phone book or the addition of a new phone book entry, which is defined in the standard of the SIM card. The EFcc changes the change counter (cc) when the phone book is removed or a change occurs. That is, EFcc is a state check counter for checking the change state of the SIM card 10.

The port 20 is formed at one side of the mobile terminal 1 and serves as a connector to which the SIM card 10 can be mounted and detached. SIM card 10 is a card type, the signal pattern for transmitting and receiving a signal is formed on one side, the port 20 is formed with a pattern corresponding to the signal pattern to be connected to the signal pattern.

The SIM card 10 inserted into the port 20 is mounted or detached in an interference fit type. If necessary, in addition to the interference fit type, a separate implant may be provided to support and fix the SIM card 10 inserted into the port 20.

The main memory 40 is a memory in which information stored in the SIM card 10 is loaded, and is preferably formed of a flash memory that is a nonvolatile memory. The main memory 40 is largely divided into a program memory area 42 and a data memory area 44.

The program memory area 42 includes an operating system for booting the portable terminal 1, an application for configuring a standby screen of the portable terminal 1, and other options of the portable terminal 1, for example, as described below. Applications required for camera functions, sound playback, video playback, etc. are stored. When activating each function, the corresponding application is activated to generate a program, and each function is provided using the generated program.

The data memory area 44 is an area in which the phone book information PB_Info stored in the SIM card 10 is loaded. After the SIM card 10 is mounted in the port 20 of the mobile terminal 1, the mobile terminal ( When 1) is booted, it is checked whether the SIM card 10 is changed, that is, a change in the EFcc area, and selectively loads the phone book information PB_Info stored in the SIM card 10 according to the result. Area.

The data memory area 44 includes not only the phone book information (PB_Info) of the SIM card 10, but also various other optional functions, images captured by the camera functions described above, images and videos received through the communication module described below. , Audio files and so on.

Hereinafter, in order to clarify the gist of the invention, the phone book information PB_Info will be described as information stored in the data memory area 44.

The controller 30 provides various optional functions of the mobile terminal 1 by controlling activation of an application stored in the program memory area 42 of the main memory 40 area, and in the present invention, the SIM card 10 is mounted. When the mobile terminal 1 is booted, it is checked whether the SIM card 10 is changed, and accordingly, the phone book information PB_Info stored in the SIM card 10 is loaded into the data memory area 44. To control.

In detail, the controller 30 reads the SIM card 10 through the port 20 to which the SIM card 10 is connected when the portable terminal 1 boots. Check if the change of. That is, the controller 30 checks the unique number (IC-CID) of the SIM card 10, checks whether there is no change in the identified unique number (IC-CID), and changes the unique number (IC-CID). Is detected, the phone book information (PB_Info) is read from the SIM card 10, and the phone book information (PB_Info) is stored in the data memory area 44 of the main memory 40. Load).

On the other hand, the controller 30 obtains information on the EFcc area of the SIM card 10 when there is no change of the unique number (IC-CID). At this time, when the EFcc value is "1", the phone book information (PB_Info) of the SIM card 10 is changed, and when it is "0", the phone book information (PB_Info) of the SIM card 10 is not changed. Let's define.

In this case, when the EFcc value has a value of "1" indicating that the phone book information PB_Info of the SIM card 10 is changed, the controller 30 reads the phone book information PB_Info from the SIM card 10. To the data memory area 44. That is, the controller 30 recognizes that the phone book information PB_Info of the SIM card 10 has changed, and recognizes the phone book information read from the SIM card 10 as new phone book information different from the previous information.

On the other hand, when the EFcc value has a value of "0" indicating that the phone book information PB_Info of the SIM card 10 has not been changed, the control unit 30 receives the phone book information PB_Info from the SIM card 10. No read is performed, and booting is performed using the phone book information PB_Info stored in the data memory area 44 of the previous main memory 40.

Accordingly, the controller 30 loads the phone book information PB_Info from the data memory area 44 according to the change of the SIM card 10 mounted in the portable terminal 1, thereby reducing the time required for booting. It becomes possible.

In the above, the portable terminal 1 equipped with the SIM card has been described mainly on the read and skip states of the phone book information of the SIM card. Hereinafter, a configuration required for the mobile terminal 1 equipped with the SIM card to function as the mobile terminal 1, that is, to include a communication module and to perform other additional optional functions will be described in detail with reference to FIG. 2. Let's do it.

2 is a diagram schematically illustrating an internal block configuration of the mobile terminal 1 according to an embodiment of the present invention.

Before explaining FIG. 2, in the portable terminal 1 according to the embodiment of the present invention, if the SIM card is not changed when the portable terminal is booted and there is no change in the phone book information of the SIM card, the phone of the SIM card Using the book information stored in the existing portable terminal, the loading of the phone book information of the SIM card is omitted. Through this, the portable terminal of the present invention can reduce the loading time by loading the phone book information of the SIM card unconditionally upon initial boot or reboot in the existing portable terminal.

To this end, the portable terminal 1 includes a controller 30, a radio frequency (hereinafter referred to as RF) processor 303, a data processor 305, an audio processor 307, and a key input unit ( 309, a main memory 40, a camera module 313, an image processor 315, a display 317, a port 20, and the like.

Referring to FIG. 2, the mobile terminal 1 according to the embodiment of the present invention is largely divided into an input means, a processing means, a storage means, an output means, and a communication means.

The input means is responsible for receiving multimedia data such as voice data, numeric / character data, and video data. The input means may include an audio processor 307, a key input unit 309, a camera unit 313, and the like. In addition, when the liquid crystal display (hereinafter, referred to as LCD) of the display unit 317 is formed in the form of a touch screen, the display unit 217 may be included in the input means. .

The processing means is responsible for a series of processes corresponding to each of user data input from the input means, for example, the audio data, numeric / text data and video data, and additional functions requested by the user, such as a DMB function, The phone book information PB_Info is selectively read from the SIM card 10. The processing means includes a controller 30, a data processor 305, an image processor 315, a port 20, and the like.

The storage means stores user data input through the input means, and phone book information PB_Info read from the SIM card 10, and additional functions of the portable terminal 1, for example, a short message service (SMS). , A Short Message Service (MMS), a Multimedia Messaging Service (MMS), and the like, and store data related to the main memory 40.

The output means has a function of constructing and outputting a screen with respect to user data input through the input means, user data stored in the storage means, and phone book information PB_Info read from the SIM card 10 and the voice data. It is responsible for the function to output to the outside, and includes an audio processing unit 307, a display unit 317 and the like.

The communication means is responsible for wirelessly transmitting the user data to another external user or the like, or for transmitting / receiving content through interworking with an external web server. The RF processor 303 and at least one antenna ( Antenna) and the like.

In more detail with respect to each of the components as described above, the RF processing unit 303 performs a series of communication related to mobile phone communication, short message service (SMS) or multimedia messaging service (MMS) communication and data communication, etc. do. In addition, the RF processor 303 converts and transmits voice / sound data and control data into a wireless signal, and receives and converts the wireless signal into voice / sound data and control data. To this end, the RF processor 303 preferably includes an RF transmitter for upconverting and amplifying the frequency of the transmitted signal, and an RF receiver for low noise amplifying and downconverting the received signal.

The data processor 305 is in charge of processing voice data transmitted from the audio processor 307 or the like, numeric / character data input from the user through the key input unit 309. In addition, the data processor 305 is a means for performing encoding and modulation on the signal transmitted through the RF processor 303, a means for performing demodulation and decoding on the signal received through the RF processor 303, etc. It may include.

That is, the data processor 305 includes a transmitter for encoding and modulating the transmitted signal and a receiver for demodulating and decoding the received signal. Therefore, the data processor 305 may include a modem and a codec. The codec includes a data codec for processing packet data and an audio codec for processing an audio signal such as voice.

The audio processor 307 reproduces an audio signal output from the data processor 305 or transmits an audio signal such as a voice input from a microphone MIC to the data processor 305. That is, the audio processor 307 converts the audio / sound data into an audible sound through the speaker SPK and outputs the audio / audio data, such as a voice received from the microphone MIC, under the control of the controller 301. Data is outputted.

The key input unit 309 includes numbers, letters and / or function keys for inputting numbers and text information and for setting various functions. The key input unit 309 includes a key for turning off the power of the portable terminal 1 and a key for turning on the key, and booting the portable terminal 1 using the keys. The function key may include a soft key, a hot key, a shortcut key, and keys mapped to perform a function corresponding thereto.

The main memory 40 may include a program memory area and a data memory area. In the program memory area, programs for controlling the general operation of the mobile terminal 1 and programs for controlling the selective synchronization of the SIM card 10 according to an embodiment of the present invention may be stored. The data memory area may store data generated while executing the programs and phone book information PB_Info read from the SIM card 10.

The camera unit 313 photographs a predetermined object under the control of the controller 30 to receive a data signal, converts the input data signal into an image / video signal, and outputs the converted data signal. To this end, the camera unit 313 includes a camera sensor for converting the photographed optical signal into an electrical signal, and a signal for converting an analog signal photographed from the camera sensor into a digital signal. It may include a processing unit.

The camera sensor may include a complementary metal oxide semiconductor (CMOS) or a charge coupled device (CCD) sensor, and the signal processor may include a digital signal processor (DSP). In addition, the camera sensor and the signal processor may be integrally implemented or may be separately implemented. The camera unit 313 may be omitted according to the provision form of the mobile terminal.

The image processor 315 performs a function of generating screen data for displaying an image signal output from the camera unit 313.

For example, the image processor 315 processes the image signal output from the camera unit 315 in units of frames, and outputs the frame image data in accordance with the characteristics and standards of the display unit 317. do.

In addition, the image processor 315 includes an image codec and compresses the frame image data displayed on the display unit 317 in a selected manner or restores the compressed frame image data to original frame image data. Perform the function. Here, the image codec may include a JPEG codec, an MPEG4 codec, a wavelet codec, and the like.

The display unit 317 displays image data output from the image processor 315, user data requested by a user, and an additional function screen. Here, the display unit 317 may include an LCD.

In addition, the display unit 317 displays pre-stored image information when the portable terminal 1 reboots, and selectively displays phone book information PB_Info stored in the SIM card 10. That is, the display unit 317 reads from the SIM card 10 and selects the phone book information PB_Info stored in the data memory area by using a key operation of the key input unit 309, thereby selecting the selected phone book information PB_Info. Will be displayed.

The controller 30 performs a function of controlling the overall operation of the portable terminal 1 and the signal flow between the internal blocks of the portable terminal 1. In addition, the controller 30 may include the data processor 305. In addition, the controller 30 is the data processor 305, the key input unit 309, the main memory 40, the camera unit 313, the image processor 315, the port 20, and the like, according to an exemplary embodiment. To control the signal flow between each component.

In particular, the controller 30 checks whether the SIM card 10 is changed when the portable terminal 1 equipped with the SIM card 10 is booted, and stores the phone stored in the SIM card 10 based on the result. Controls that book information PB_Info is loaded into the main memory 311.

In the above, an example of the configuration of the portable terminal 1 equipped with the SIM card according to the embodiment of the present invention has been described. Next, a method of synchronizing a SIM card that can reduce loading time at boot time by implementing read and skip according to the state of the SIM card will be described in more detail with reference to the accompanying drawings.

3 is a flowchart illustrating a SIM card synchronization method according to an embodiment of the present invention.

Referring to FIG. 3, in the SIM card synchronization method according to an embodiment of the present invention, first, a unique number (IC-CID) of the SIM card 10 mounted in the port 20 when the portable terminal 1 is booted. Read (step S101).

In step S101, the control unit 30 of the portable terminal 1 checks the SIM card 10 installed in the port 20 at the time of booting, and reads the unique number (IC-CID) of the SIM card 10. .

Next, it is checked whether or not the unique number (IC-CID) of the read SIM card 10 is changed (step S102).

In step S102, the controller 30 checks whether the unique number (IC-CID) of the SIM card 10 read through the port 20 matches the unique number registered before booting, and thus During the booting process, it is checked whether the recognized SIM card 10 is the same SIM card 10 as the previously installed SIM card 10 or replaced with a new SIM card 10.

In step S102, when the unique number (IC-CID) of the SIM card 10 is changed, the SIM card 10 is recognized as newly installed, and the phone book information PB_Info of the SIM card 10 is read. After that (step S103), the phone book information PB_Info is loaded into the data memory area 44 (step S104).

In step S104, when the unique number (IC-CID) of the SIM card 10 is changed, the controller 30 replaces the SIM card 10 by the user, and accordingly, the new SIM card 10 is changed. It is recognized that is mounted in the port 20. Thereafter, the controller 30 reads various pieces of information stored in the SIM card 10, in particular, phone book information PB_Info, and loads them into the data memory area 44.

At this time, the controller 30 deletes the old phone book information stored in the data memory area 44 and updates the data memory area 44 with the phone book information PB_Info read from the new SIM card 10.

In step S102, when there is no change of the unique number (IC-CID) of the SIM card 10, the status check counter (EFcc) value of the SIM card 10 is checked (step S105).

In step S105, if there is no change in the unique number (IC-CID) of the SIM card 10, the controller 30 is equipped with the same SIM card 10 as the SIM card 10 mounted before booting. It is assumed that the information stored in the SIM card 10 is changed.

Here, the controller 30 may check the state check counter EFcc value defined in the memory area of the SIM card 10 to confirm the change of the phone book information PB_Info of the SIM card 10. That is, when the state check counter (EFcc) value of the SIM card 10 is changed, the controller 30 updates or deletes the phone book information PB_Info stored in the SIM card 10 mounted in the port 20. It is assumed that the area exists, and after reading the phone book information PB_Info of the SIM card 10 (S103), the phone book information PB_Info is loaded into the data memory area 44 (step S104).

In the step S105, if the status check counter (EFcc) value does not change, it is assumed that there is no change in the phone book information (PB_Info) stored in the SIM card 10 mounted in the port 20, and the SIM card ( Without the phone book information (PB_Info) reading process of step 10), the previous phone book information (PB_Info) loaded and stored in the current data memory area 44 is activated (step S106).

In step S106, when the value of the status check counter (EFcc) does not change, the controller 30 does not replace the SIM card 10 mounted during the booting operation. It is assumed that the change of the phone book information PB_Info stored in 10) does not occur, and the booting process is performed without updating or changing the previous phone book information stored in the data memory area 44 before the mobile terminal 1 boots. do.

The SIM card synchronization method and the mobile terminal 1 using the same according to an embodiment of the present invention loads the phone book information of the SIM card according to the change of the phone book information of the SIM card mounted on the mobile terminal 1. Alternatively, by ignoring, when rebooting the portable terminal 1 without changing the phone book information, it is possible to reduce the boot time required for loading the phone book information.

As described above, in the detailed description of the present invention has been described with respect to specific embodiments, various modifications are possible without departing from the scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below, but also by the equivalents of the claims.

As described above, the method and system proposed by the present invention can prevent unnecessary reading of the SIM card and loading of information when booting the portable terminal, thereby reducing the booting time of the portable terminal. Specifically, according to the information of the installed SIM card, the present invention can selectively reduce the booting time by selectively reading the phone book data of the SIM card and using the pre-stored phone book data. The EFcc data information is used to determine whether the SIM card information has changed, and if the SIM card information is changed, read the phone book data, and if the SIM card information has not changed, the previously stored phone book data is read. By applying this, booting time can be reduced.

Claims (11)

In the SIM card synchronization method in a mobile terminal, Checking whether a unique number of the mounted SIM card is changed when the mobile terminal is booted; If there is no change of the unique number, checking whether the status check counter of the SIM card is changed; If there is no change of the status check counter, omitting the process of reading the information of the SIM card and utilizing previous SIM card information stored in the main memory. The method of claim 1, Checking whether the unique number is changed, Reading the information stored in the SIM card when the unique number is changed; And loading the read information into the main memory. The method of claim 1, The step of checking whether or not the state check counter is changed, Reading information stored in the SIM card when the status check counter is changed; And loading the read information into the main memory. The method of claim 1, And the SIM card information comprises phone book information. The method of claim 1, And the sim card information is loaded into a data memory area of the main memory. In a mobile terminal, SIM card in which personal information is stored; A port to which the SIM card is mounted and detached; A main memory into which personal information stored in the SIM card is loaded; A control unit for controlling the loading of the SIM card information into the main memory; The controller selectively controls loading of the SIM card information into the main memory according to whether the SIM card unique number is changed and whether the SIM card status check counter is changed when the portable terminal is booted. Mobile terminal. The method of claim 6, The personal information includes phone book information. The method of claim 6, And the personal information is loaded into a data memory area of the main memory. The method of claim 6, The control unit, And when the unique number is changed, recognizes that the SIM card is replaced. The method of claim 6, The control unit, And when the status check counter is changed, recognize that the personal information stored in the SIM card is updated or at least partially deleted. The method of claim 6, The control unit And if the unique number and the status check counter value are the same as before booting, omitting the reading process of the SIM card and activating previous personal information stored in the main memory.

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