KR20040003222A - Cellular phone capable of using selectively a plurality of SIM/UIM - Google Patents

Abstract

PURPOSE: A mobile communication terminal selectively using many SIMs(Subscriber Identity Modules) is provided to insert many SIMs/UIMs(User Identity Modules) into the terminal, and to enable a user to selectively use the inserted SIMs/UIMs, thereby preventing unused SIMs/UIMs from being lost. CONSTITUTION: Many SIMs/UIMs(112,114,116) are inserted into many sockets(118). Data buses connected to each socket(118) are connected to a microcomputer controller, in order that the microcomputer controller reads or writes data stored in the SIMs/UIMs(112,114,116). When a command for displaying identity lists on the SIMs/UIMs(112,114,116) is inputted, the microcomputer controller sequentially reads identity data of the SIMs/UIMs(112,114,116), and displays the read identity data on an LCD(110). If a user selects desired SIM/UIM numbers, the microcomputer controller switches a bidirectional 3-state gate(204).

Description

Cellular terminal capable of selectively using a plurality of subscriber identity modules {Cellular phone capable of using selectively a plurality of SIM / UIM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication terminal capable of selectively using a plurality of subscriber identity module (SIM) / user identity module (UIM). In particular, the present invention relates to a plurality of SIM / UIMs in a mobile communication terminal. The present invention relates to a mobile communication terminal that can be inserted and optionally used by a user selectively connecting the corresponding SIM / UIM.

The mobile terminal is an electronic serial number (ESN) for communicating with a base station in an electrically erasable programmable read only memory (EEPROM) inside the mobile terminal in the case of an advanced mobile phone service (AMPS) / code division multiple access (CDMA) scheme. serial number) or store the electronic serial number in a smart card to separate it from the mobile communication terminal to issue, manage, and operate, and include various functions such as prepaid card including encryption and decryption as well as electronic serial number. SIM / UIM is being introduced.

Such a smart card SIM is specified in GSM 11.11 of the GSM (global service for mobile communication) method applied by European mobile communication, and in the case of CDMA system of Qualcomm of the United States, R through CDG (CDMA development group) The UIM standard is specified, and the SIM / UIM standard that is compatible with the GSM method is applied to the CDMA method which promotes the service in China with the GSM method.

The GSM method stores an electronic serial number stored in a memory device mounted inside a mobile communication terminal in a SIM that can be separated from a socket in the mobile communication terminal, and uses an algorithm including encryption and decryption of voice communication contents as a smart card. By implementing the SIM, the mobile communication terminal adopting the AMPS / CDMA scheme could fundamentally solve the problem of the expected mobile communication service such as easily copying and stealing the stored electronic serial number.

As such, the SIM which can be separated from the mobile communication terminal has the advantage that it is almost impossible to forge because it uses a smart card as a medium, and since the smart card medium itself has excellent security, it is used as a prepaid means of communication charges. In addition to prepaid means, SIM could add the ability to recharge prepaid money in banks in conjunction with the next generation of credit and debit cards, the europay-master-visa (EMV).

Since SIM / UIM has begun to be used as a means of payment for mobile telecommunications, SIM / UIM issued by regional telecommunication service providers is suitable for payment of service charges used in the region, but it is long-distance and international beyond the area of use of SIM / UIM. When using a telephone, a high service fee is charged, and the user has to purchase and use a SIM / UIM separately for each service area.

That is, since only one SIM / UIM can be inserted into the mobile communication terminal, it is inevitable to use multiple SIM / UIMs. If you move out of the service area directly from the mobile carrier that issued the SIM / UIM and move to another area, the user must insert and use the SIM / UIM issued by the mobile carrier in that region. There was only inconvenience.

The present invention is to solve the above problems, it is possible to insert a plurality of SIM / UIM in the mobile communication terminal, the user of the plurality of SIM / UIM through the bidirectional switching gate controlled by the command of the terminal keyboard desired SIM / UIM An object is to provide a mobile communication terminal that can be selected and used.

Another object of the present invention is to provide a mobile communication terminal capable of inserting a plurality of SIM / UIM in the mobile communication terminal and the user can select and use the desired SIM / UIM as a physical switch among the plurality of SIM / UIM.

Still another object of the present invention is to provide a mobile communication terminal in which a user can select and use a desired SIM / UIM by installing a storage box capable of storing a plurality of SIM / UIMs in the mobile communication terminal.

1 is a block diagram of a mobile communication terminal in which a plurality of SIMs are inserted according to the present invention.

FIG. 2 is a view showing a main part of a mobile communication terminal for explaining the use of a SIM / UIM card selectively using a logic switch as a first embodiment of the terminal shown in FIG.

FIG. 3 is a diagram illustrating an essential part of a mobile communication terminal for explaining selectively using a SIM / UIM as a physical switch as a second embodiment of the terminal shown in FIG.

4 is an internal view of a terminal having a storage box for storing a plurality of SIM / UIMs as a third embodiment of the present invention.

Mobile communication terminal that can selectively use a plurality of SIM / UIM according to the present invention for achieving the above object,

It is preferable that a plurality of SIM / UIM sockets can be selectively used by inserting a plurality of SIM / UIMs into a mobile communication terminal.

In addition, preferably characterized in that it further comprises a physical switch for electrically connecting the plurality of SIM / UIM inserted into the socket with the mobile terminal selectively by the user.

In addition, the terminal displays the identification list for the plurality of SIM / UIM inserted into the socket on the LCD screen and the SIM / UIM on the list when the SIM / UIM on the list is selected through the key input unit of the terminal and the corresponding SIM / UIM And a microcomputer control unit for controlling the connection.

In addition, a storage box is provided in the mobile communication terminal for storing a plurality of SIM / UIM for selectively using a plurality of SIM / UIM.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a mobile communication terminal in which a plurality of SIMs are inserted according to the present invention.

As a component of the terminal shown in FIG. 1, a RAM 102, a ROM 104 for storing a driving program, a receiver for processing a signal received through a base station, and outputting the signal as an audible frequency to a speaker and a user voice Transmitting and receiving signal processing unit 100 including a transmission unit for converting the signal to the base station by wireless transmission is a known technique as a component of a conventional terminal, detailed description thereof will be omitted.

In the terminal shown in FIG. 1, a plurality of SIMs or SIM / UIMs are inserted into and connected to a mobile communication terminal, and the GUI (graphic user interface) is read using the program stored in the ROM 104 by reading recorded data of each SIM / UIM. The microcomputer control unit 106 displays the identification list of the mobile communication service providers stored in the respective SIM / UIMs 112, 114, and 116 on the liquid crystal display 110.

FIG. 2 is a main partial view of a terminal for explaining the first embodiment shown as the terminal device of FIG. 1 in more detail. Reference numeral 200 denotes an internal view of a terminal equipped with a plurality of SIM / UIMs. A plurality of sockets 118 for insertion are included. A plurality of SIM / UIMs 112, 114, and 116 are inserted corresponding to the plurality of sockets 118. The data bus connected to each socket is connected to the microcomputer control unit 106 of FIG. 1 through the bidirectional three-state gate 204, so that the microcomputer control unit 106 can read or write data stored in the SIM / UIM. . In addition, the bidirectional three-state gate 204 or a logic switch having the same function may be included in the microcomputer control unit 106 and designed.

When the user commands the key input unit 108 of the mobile communication terminal 202 to display the identification list for the plurality of SIM / UIMs 112, 114, and 116 inserted into the socket 118, the microcomputer control unit 106 may display each of the identification lists. Identification data of the SIM / UIMs 112, 114, and 116 are sequentially read and displayed on the liquid crystal display 110. FIG. At this time, when the user selects a desired SIM / UIM identification number, the microcomputer control unit 106 switches the bidirectional three-state gate 204 so that the corresponding SIM is fixedly connected to the microcomputer control unit 106 so that the user can select another SIM / UIM. Unless it is selected, it works the same as inserting and operating one SIM / UIM as in the prior art.

FIG. 3 is a main partial view of the inside of the terminal of the second embodiment selectively using a plurality of SIM / UIMs as physical switches in the terminal shown in FIG.

In the second embodiment, a plurality of SIM / UIM sockets 302 are provided in the mobile communication terminal 300, and a plurality of SIM / UIMs 112, 114, and 115 are inserted corresponding to the sockets 302. The physical switch 304 is connected between the data bus of each socket 302 and the microcomputer control unit so that the user can directly connect the data bus of the SIM / UIM to the microcomputer control unit 106 using the physical switch 304. Can be.

Therefore, if the user simply connects the SIM / UIM to be used with the physical switch 304 to the microcomputer control unit 106, the same function as that of a terminal used by inserting a conventional SIM is performed.

4 is a schematic diagram of a mobile communication terminal having a plurality of SIM compartments as a third embodiment of the present invention.

In FIG. 4, a storage box 404 for storing a plurality of SIMs in the mobile communication terminal 400 is provided, and the user is stored in the storage box 404 except for the SIM / UIM 402 currently used. If there is no fear of loss during storage and it is necessary to replace and insert a desired SIM, the corresponding SIM / UIM stored in the storage box 404 can be inserted and used in the mobile communication terminal.

According to the present invention described above, since the user can selectively use the inserted SIM / UIM by inserting a plurality of SIM in the mobile communication terminal according to the region or use conditions, according to the separate carrying of SIM / UIM not currently used There is no fear of loss, and it can be used in conjunction with the EMV card, so that the mobile communication terminal can be used more efficiently.

Claims (4)

And a plurality of SIM / UIM sockets which can be selectively used by inserting a plurality of SIM / UIMs into the mobile communication terminal. The SIM / UIM of claim 1, further comprising a physical switch for electrically connecting the plurality of SIM / UIMs inserted into the sockets to the mobile communication terminal selectively by a user. Mobile communication terminal. The terminal of claim 1, wherein the terminal displays identification lists for the plurality of SIM / UIMs inserted into the socket on the LCD screen, and the SIM / UIM on the list is selected through a key input unit of the terminal. And a microcomputer control unit for controlling the UIM to be connected to the terminal. And a storage box inside a mobile communication terminal for storing a plurality of SIM / UIMs for selectively using the plurality of SIMs / UIMs.