JP4454795B2 - Mobile radio terminal - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mobile radio terminal capable of connecting an external device such as a terminal device such as a mobile phone system.
[0002]
[Prior art]
Conventionally, in terminal devices such as mobile phone systems, a dial lock function that restricts input from the operation unit, a secret dial function that disables use of the registered dial unless the correct password is entered in the registered dial, and dialing There was a dial transmission restriction function to restrict. In addition, a method of restricting the use of terminal devices via a service network has been considered.
[0003]
Recently, services such as EC (Electric Commerce) using terminal devices such as mobile phones have been considered. In this EC, in addition to the one using the network of the mobile phone system, one using, for example, BT (Blue Tooth) as the external interface of the mobile phone is being proposed.
[0004]
In the conventional terminal device, for example, memory dial information is read by a malicious third party, or when performing a commercial transaction using the identification information of the terminal device, such as EC, There is a risk that the function of the terminal device may be used such as the ID information of the terminal device being used without permission, which may be a big problem in terms of security.
[0005]
[Problems to be solved by the invention]
In the conventional mobile radio terminal, there is a possibility that the function of the terminal device may be used, for example, reading memory dial information or using the ID information of the terminal device through an external device connected to the connection interface. It was.
[0006]
The present invention has been made to solve the above problem, and an object of the present invention is to provide a mobile radio terminal capable of preventing misuse by a third party through a connection interface for connecting an external device.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a mobile radio terminal comprising a first communication means for wirelessly communicating with a base station connectable to a network, and a second communication means for communicating with a device other than the base station. The authentication information storage means for storing the authentication information in advance, the authentication information input means for inputting the authentication information, and the communication availability determination means for determining whether or not the first communication means is communicable with the base station. The second communication means is restricted in response to the restriction request, and after that, only if the information input from the authentication information input means matches the authentication information stored in the authentication information storage means. Use restriction control means for restricting the use of the second communication means when the communication means is usable and the communication availability determination means determines that the first communication means cannot communicate with the base station. It is configured with It was.
[0008]
In the mobile radio terminal having the above configuration, the use of the second communication means is restricted in response to the restriction request, and the information input from the authentication information input means matches the authentication information stored in advance in the authentication information storage means In this case, the second communication means can be used, and if the first communication means cannot communicate with the base station, the use of the second communication means is restricted.
[0009]
Therefore, according to the mobile radio terminal having the above configuration, once the restriction request is made, the second communication means cannot be used unless the correct authentication information is input. Unauthorized use of communication means can be prevented, and when remote control through the first communication means cannot be performed outside the base station area, the use of the second communication means is restricted by itself and unauthorized use is made. Can be prevented.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows the configuration of a mobile radio terminal according to an embodiment of the present invention, taking as an example a case where radio communication is performed with a base station (not shown) by a TDMA (Time Division Multiple Access) system. explain.
[0011]
In addition, a connection interface with an external device may be a wired connection or a wireless connection. Here, a mobile wireless terminal wirelessly connected using BT (Blue Tooth) will be described as an example.
[0012]
The mobile radio terminal shown in this figure includes a radio unit 10 including an antenna 11, a modem unit 20, a TDMA unit 30, a call unit 40 including a speaker 43 and a microphone 44 (M), an incoming call notification unit 50, The memory unit 60, the interface 61, the user interface unit 70, the image processing unit 80 including the camera 81, the BT wireless unit 90, and the control unit 100.
[0013]
A radio frequency signal transmitted from a base station connected to the mobile communication network via a radio communication channel is received by the antenna 11 and then input to the reception unit 13 via the high frequency switch (SW) 12 of the radio unit 10. The
[0014]
In the reception unit 13, the received radio frequency signal is mixed with the reception local oscillation signal generated from the frequency synthesizer 14 and frequency-converted to a reception intermediate frequency signal.
[0015]
The local oscillation frequency generated from the frequency synthesizer 14 is instructed by the control unit 100 according to the radio channel frequency. The radio unit 10 is provided with a received electric field strength detection unit (RSSI) 16.
[0016]
The reception field strength detection unit 16 detects the reception field strength (hereinafter referred to as RSSI) of the radio frequency signal arriving from the base station, and notifies the control unit 100 of the detected value.
[0017]
The received intermediate frequency signal output from the receiving unit 13 is input to the demodulating unit 21 of the modem unit 20. The demodulator 21 digitally demodulates the received intermediate frequency signal, thereby reproducing a digital speech signal.
[0018]
In the TDMA decoding unit 31 of the TDMA unit 30, the digital speech signal is decomposed for each time slot in accordance with an instruction from the control unit 100. Of the plurality of decomposed digital call signals, the digital call signal of the slot addressed to the own device is input to the call unit 40.
[0019]
The call unit 40 includes an adaptive differential PCM transcoder 41 and a PCM codec 42, and the digital call signal is sequentially decoded by the adaptive differential PCM transcoder 41 and the PCM codec 42 to be analog. Played on the call signal. The analog call signal is amplified by a not-shown receiving amplifier and then output from the speaker 43.
[0020]
On the other hand, the transmission voice input to the microphone 44 is sequentially encoded by the PCM codec 42 and the adaptive differential PCM transcoder 41 to become a digital speech signal, and is input to the TDMA encoding unit 32.
[0021]
In the TDMA encoding unit 32, the digital speech signal output from the adaptive differential transcoder 41 is inserted into the time slot designated by the control unit 100 and input to the modulation unit 22. In the modulation unit 22, the carrier signal is digitally modulated by the digital speech signal. The carrier signal modulated in this way is input to the transmitter 15.
[0022]
In the transmission unit 15, the modulated carrier wave signal is mixed with a transmission local oscillation signal generated from the frequency synthesizer 14, thereby frequency-converted to a radio channel frequency designated by the control unit 100, and then a predetermined transmission Amplified to power level. The radio frequency signal frequency-converted and amplified in this way by the transmitter 15 is transmitted from the antenna 11 to the base station via the high-frequency switch 12.
[0023]
The incoming call notification unit 50 notifies the user of an incoming call under the control of the control unit 100 when there is an incoming call addressed to the terminal device. The sounding body 51 emits an audible sound to notify the user. A light emitting body 52 that performs notification and a vibrating body 53 that performs notification by generating vibration by an eccentric motor or the like, for example.
[0024]
The memory unit 60 uses, for example, a semiconductor memory such as a ROM or a RAM as a storage medium. The storage medium includes a control program for the control unit 100, own ID data necessary for authentication, various control data, and various setting data. In addition to storing dial data associated with abbreviated dialing, image data for identifying the owner is stored as authentication information.
[0025]
The interface 61 is an interface for connecting the UIM card 62. In addition to contract information with a business operator operating a mobile communication system and identification information of a user, the UIM card 62 includes information on electronic money drawn from a bank or the like through a network such as a public network, and a personal identification number for electronic money. Remember.
[0026]
The user interface unit 70 includes a display unit 71 and a key input unit 72. The display unit 71 includes, for example, an LCD (Liquid Crystal Display) and the like to the user's own state (outgoing / incoming call, remaining battery level, reception strength), dial data read from the memory unit 60, and a camera 81 described later This is for visually indicating image data taken by the camera.
[0027]
The key input unit 72 is a key for performing a normal call function related to outgoing / incoming calls, such as a numeric keypad for inputting a dial number, and switching of an incoming call notification method (audible sound / light emission / vibrator / no notification). It is equipped with keys for using various settings and various functions.
[0028]
The image processing unit 80 performs image processing such as encoding on the image signal captured by the camera 81 using a CCD or CMOS solid-state imaging device, converts the image signal into image data of a predetermined format, and inputs the image data to the control unit 100. .
[0029]
The BT radio unit 90 transmits / receives radio signals using a BT method to / from personal computers and EC system compatible devices. Reference numeral 91 denotes an antenna for transmitting and receiving a radio signal by the BT method.
[0030]
The control unit 100 includes, for example, a microcomputer as a main control unit. In addition to controlling each unit related to communication in order to perform TDMA communication as described above, the control unit 100 responds to user requests through the key input unit 72. Accordingly, various controls such as editing control of dial data stored in the memory unit 60, image input using the camera 81, and communication control through the BT wireless unit 90 are performed.
[0031]
In addition, the control unit 100 performs a control function for performing electronic commerce with an operator on the network through a base station based on data stored in the UIM card 62, and performs a business transaction with an EC system compatible device through the BT wireless unit 90. It has a control function to perform.
[0032]
Furthermore, as a new control function, the control unit 100 collates the authentication information for identifying the owner stored in the memory unit 60 with the image data input through the camera 81, and according to the collation result. And a control function for restricting a communication function using the BT wireless unit 90.
[0033]
Next, the operation of the mobile radio terminal having the above configuration will be described.
First, the control operation when setting the use restriction of the BT wireless unit 90 will be described. FIG. 2 is a flowchart showing this control operation, and this processing is performed by the control unit 100.
[0034]
First, in step 2a, a display requesting that the authentication data is input on the display unit 71 is performed, and the process proceeds to step 2b.
In step 2b, the camera 81 is controlled through the image processing unit 80. Under this control, the image captured by the camera 81 is subjected to image processing by the image processing unit 80 to become image data in a predetermined format, which is input to the control unit 100 and proceeds to step 2c.
[0035]
In step 2c, the image data input in step 2b and the authentication information stored in the memory unit 60 are collated with a predetermined algorithm. If they match, the process proceeds to step 2d. Move on to step 2e. Note that the authentication information used here uses image data obtained by capturing a user-specific information such as the user's face.
[0036]
In step 2d, a setting menu screen related to use is displayed on the BT radio unit 90, and the process proceeds to step 2f. This setting menu screen is a setting item as shown in FIG. 3, for example.
[0037]
This setting item is “0: always OFF” for setting the BT radio unit 90 so that it cannot be used at all times, “1: ON when authentication information is collated” that accepts authentication information and can use it only when it is correct, dial lock "2: ON when dial lock is unlocked", which is sometimes unavailable, and can be used when unlocked. When it is not possible to connect to the public network, including when out of service area, etc. "3: When connected to public network", only available when dial lock is released and connection to public network is possible "4: When unlocked + connected to public network", always used There is a possible “5: Always ON”.
[0038]
In step 2e, the fact that the input authentication information is incorrect is displayed on the display unit 71, and the process proceeds to step 2a to prompt the user to input authentication information again.
On the other hand, in step 2f, the number designation of 0 to 5 is received from the user through the key input unit 72, the received number is recorded in the memory unit 60, and the process proceeds to step 2g. Thereafter, the control unit 100 performs use restriction control of the BT radio unit 90 based on the number recorded in the memory unit 60.
In step 2g, for example, as shown in FIG. 4, the accepted setting number is displayed, the fact that the acceptance has been completed is displayed on the display unit 71, and the process ends.
[0039]
Next, when a dial lock that restricts input from the key input unit 72 is set, a control operation for releasing the lock will be described. FIG. 5 is a flowchart showing this control operation, and this processing is performed by the control unit 100.
[0040]
First, in step 5a, a display requesting input of authentication information is performed, and the process proceeds to step 5a.
In step 5 b, the camera 81 is controlled through the image processing unit 80. Under this control, the image captured by the camera 81 is subjected to image processing by the image processing unit 80 to become image data in a predetermined format, which is input to the control unit 100 and proceeds to step 5c.
[0041]
In step 5c, the image data input in step 5b and the authentication information stored in the memory unit 60 are collated with a predetermined algorithm. If they match, the process proceeds to step 5d. Control goes to step 5e.
[0042]
In step 5d, the fact that the inputted authentication information is correct is displayed on the display unit 71, the process proceeds to step 5f, the dial lock is released, and the process ends. Thereafter, input from the key input unit 72 is not limited until dial lock is set again.
[0043]
On the other hand, in step 5e, the fact that the input authentication information is not correct is displayed on the display unit 71, and the process proceeds to step 5a to prompt the user to input authentication information again.
[0044]
Next, a control operation when a request for using the BT radio unit 90 is given to the mobile radio terminal will be described. FIG. 6 is a flowchart showing this control operation, and this processing is started by the control unit 100 when the above request is made.
[0045]
In step 6a, the use restriction setting of the BT wireless unit 90 recorded in the memory unit 60 is referred to by the processing shown in FIG. 2 described above, and the mobile wireless terminal satisfies the use restriction condition required by this setting. It is determined whether or not.
[0046]
Here, when the use restriction condition corresponding to the use restriction setting of the BT wireless unit 90 is satisfied, the process proceeds to step 6b, and when not satisfied, the process proceeds to step 6c.
[0047]
In step 6b, the BT wireless unit 90 is controlled to start blue tooth communication, and for example, as shown in FIG. 7, a display indicating that blue tooth communication has been started is displayed on the display unit 71. finish.
[0048]
On the other hand, in step 6c, for example, as shown in FIG. 8, a message indicating that the BT wireless unit 90 cannot be used (blue tooth communication cannot be performed) is displayed on the display unit 71, and the process ends.
[0049]
As described above, in the mobile radio terminal having the above-described configuration, the use restriction of the BT wireless unit 90 can be facilitated by interlocking with the use restriction such as dial lock, and the user once sets the use restriction of the BT wireless unit 90. As long as the dial lock is not released and correct authentication information is not entered, Bluetooth communication using the BT wireless unit 90 cannot be performed.
[0050]
Therefore, according to the mobile radio terminal having the above-described configuration, even if a malicious third party tries to illegally use the BT radio unit 90 of the terminal, it is used unless the dial lock is released or correct authentication information is input. Therefore, for example, illegal use of electronic money stored in the UIM card 62 or illegal reading of various data stored in the memory unit 60 can be prevented.
[0051]
The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the authentication information is stored in the memory unit 60. Instead, for example, the authentication information may be stored in the UIM card 62. According to such a configuration, the use of the BT radio unit 90 is restricted unless the UIM card 62 is connected to the interface 61.
[0052]
In the above-described embodiment, the BT wireless unit 90 has been described as an example of a connection interface for connecting an external device. Instead, for example, infrared communication that performs infrared communication conforming to the IrDA (Infrared Data Association) standard is used. The communication unit and the UART unit that performs asynchronous serial communication have the same effect.
[0053]
Furthermore, in the above-described embodiment, the use restriction setting of the BT radio unit 90 is performed through the key input unit 72. However, the mobile radio terminal is connected from a general subscriber phone or public telephone through the public network and mobile communication network. Alternatively, the use restriction instruction of the BT wireless unit 90 may be issued.
[0054]
As a specific configuration of this, as shown in FIG. 9, for example, a special number such as “193 + xxxxxxx” (subscriber number of a mobile radio terminal) is called and received. The control station of the mobile communication system calls the mobile radio terminal using a call signal including predetermined control information. When the mobile radio terminal detects the control information from the call signal, the use restriction of the BT radio unit 90 is implemented.
[0055]
According to such a configuration, even if the user loses or steals the mobile radio terminal, it is possible to prevent unauthorized use of the BT radio unit 90 by a malicious third party by remote operation through the mobile communication network. Can do.
[0056]
Further, in this case, when the use restriction processing of the BT wireless unit 90 shown in FIG. 2 is performed, a setting for restricting the use when the connection to the public network such as “3” or “4” is impossible is performed. Since the BT radio unit 90 is restricted when the terminal is out of service, etc., it is possible to prevent unauthorized use of the BT radio unit 90 by a malicious third party even if remote control through the mobile communication network is not possible. can do.
In addition, it goes without saying that the present invention can be similarly implemented even if various modifications are made without departing from the gist of the present invention.
[0057]
【The invention's effect】
As described above, in the present invention, the use of the second communication means is restricted in response to the restriction request, and the information input from the authentication information input means matches the authentication information stored in the authentication information storage means in advance. Only in this case, the second communication means can be used, and when the first communication means cannot communicate with the base station, the use of the second communication means is restricted.
[0058]
Therefore, according to the present invention, once the restriction request is made, the second communication means cannot be used unless correct authentication information is input. Use can be prevented, and when remote control through the first communication means cannot be performed outside the base station area, the use of the second communication means can be restricted by itself to prevent unauthorized use. A mobile radio terminal can be provided.
[Brief description of the drawings]
FIG. 1 is a circuit block diagram showing a configuration of an embodiment of a mobile radio terminal according to the present invention.
FIG. 2 is a flowchart for explaining a use restriction operation of a BT radio unit of the mobile radio terminal shown in FIG. 1;
FIG. 3 is a diagram showing an example of a setting menu screen displayed on the display unit during the use restriction operation of the BT wireless unit.
FIG. 4 is a diagram showing an example of a screen for notifying the completion of setting displayed on the display unit when the use restriction setting is made by the use restriction operation of the BT wireless unit.
FIG. 5 is a flowchart for explaining an operation of canceling the use restriction of the BT radio unit of the mobile radio terminal shown in FIG. 1;
6 is a flowchart for explaining a control operation when there is a use request for the BT radio unit of the mobile radio terminal shown in FIG. 1;
FIG. 7 is a diagram showing a state when communication through a BT wireless unit is started.
FIG. 8 is a diagram showing a state when communication through the BT radio unit cannot be performed.
FIG. 9 is a diagram for explaining a case where the use restriction of the BT radio unit is implemented through the mobile communication network.
[Explanation of symbols]
10 ... wireless unit 12 ... high frequency switch (SW)
DESCRIPTION OF SYMBOLS 13 ... Reception part 14 ... Frequency synthesizer 15 ... Transmission part 16 ... Received electric field strength detection part (RSSI)
DESCRIPTION OF SYMBOLS 20 ... Modem part 21 ... Demodulation part 22 ... Modulation part 30 ... TDMA part 31 ... TDMA decoding part 32 ... TDMA encoding part 40 ... Calling part 41 ... Adaptive difference PCM transcoder 42 ... PCM codec 50 ... Incoming call notification part 51 ... Sound generator 52 ... Luminous body 53 ... Vibrating body 60 ... Memory unit 61 ... Interface 62 ... UIM card 70 ... User interface unit 71 ... Display unit 72 ... Key input unit 80 ... Image processing unit 81 ... Camera 90 ... BT radio unit 100 ... Control unit

Claims (3)

In a mobile radio terminal comprising a first communication means for wirelessly communicating with a base station and a second communication means for communicating with a device other than the base station,
Authentication information storage means for storing authentication information in advance;
An authentication information input means for inputting authentication information;
Communication enable / disable determining means for determining whether or not the first communication means can communicate with the base station;
Limiting the use of the second communication means in response to a restriction request, and thereafter only when the information input from the authentication information input means matches the authentication information stored in the authentication information storage means When the second communication means can be used, and the communication availability determination means determines that the first communication means cannot communicate with the base station, the second communication means is used. A mobile radio terminal comprising: a use restriction control means for restricting. The first communication means receives a restriction request via a base station;
The use restricting means restricts the use of the second communication means when the first communication means receives the restriction request, and thereafter, the information input from the authentication information input means is the authentication information. 2. The mobile radio terminal according to claim 1, wherein the second communication unit can be used only when it matches the authentication information stored in the storage unit. 3. The mobile radio terminal according to claim 1 or 2 , wherein the authentication information storage means is detachable from the mobile radio terminal.

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