JP2001345925A - Mobile radio terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile radio terminal which can be prevented from being abused by a third person through a connecting interface for connecting external equipment. SOLUTION: When a utilization limit request such as dial lock is made through a key input part 72, a control part 100 limits utilization of a BT radio part 90, based on conditions corresponding to the request. Once this utilization limit is set, as long as authentication information to be inputted through a camera 81 does not match with authentication information previously stored in a memory part 60, Blue tooth communication using the BT radio part 90 cannot be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile radio terminal to which an external device such as a terminal device such as a portable telephone system can be connected.

[0002]

2. Description of the Related Art Conventionally, in a terminal device such as a cellular phone system, a dial lock function for restricting an input of an operation unit,
Among the dials registered in the memory, there were a secret dial function that prevents the registered dial from being used unless a correct password is entered, and a dialing restriction function that restricts dialing. Further, a method of restricting use of a terminal device via a service network has been considered.

Recently, services such as EC (Electric Commerce) using terminal devices such as mobile phones have been considered. In this EC, besides the one using the network of the mobile phone system, for example, BT (Blue Toot
h) is also being proposed.

In a conventional terminal device, when a malicious third party reads out, for example, memory dial information, or conducts a commercial transaction using the identification information of the terminal device as in EC. However, there is a possibility 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 serious problem in security.

[0005]

In the conventional mobile radio terminal, the functions of the terminal device are used, for example, by reading out the memory dial information and using the ID information of the terminal device through an external device connected to the connection interface. There is a risk of security problems, which is a security problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has as its object to provide a mobile radio terminal capable of preventing a third party from abusing through a connection interface for connecting an external device.

[0007]

In order to achieve the above object, the present invention provides a first communication means for wirelessly communicating with a base station connectable to a network, and a second communication means for communicating with equipment other than the base station. In the mobile radio terminal comprising the communication means of, authentication information storage means for storing authentication information in advance, authentication information input means for inputting authentication information, restricting the use of the second communication means in response to a restriction request, Thereafter, only when the information input from the authentication information input means matches the authentication information stored in the authentication information storage means, the apparatus is provided with a use restriction control means for enabling use of the second communication means. I did it.

[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 is stored in the authentication information storage means in advance. Only when they match, the second communication means can be used.

Therefore, according to the mobile radio terminal having the above configuration, once a restriction request is made, the second communication means cannot be used unless correct authentication information is input. Unauthorized use of the second communication means can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of a mobile radio terminal according to an embodiment of the present invention.
An example in which wireless communication is performed by the ltiple access method will be described.

As a connection interface with an external device, a connection interface by a wired connection and a connection interface by a wireless connection can be considered. Here, a mobile wireless terminal wirelessly connected using a BT (Blue Tooth) will be described as an example. I do.

The mobile radio terminal shown in FIG.
1, a modem unit 20, a TDMA unit 30, a communication unit 40 including a speaker 43 and a microphone 44 (M), an incoming call notification unit 50, and a memory unit 60.
, An interface 61, a user interface unit 70, an image processing unit 80 having a camera 81,
It comprises a radio unit 90 and a control unit 100.

A radio frequency signal transmitted from a base station connected to a mobile communication network via a radio communication channel is received by an antenna 11 and then transmitted to a radio frequency switch (S
W) 12 to the receiving unit 13.

In the receiving section 13, the received radio frequency signal is mixed with a receiving local oscillation signal generated from the frequency synthesizer 14, and frequency-converted into a receiving intermediate frequency signal.

The local oscillation frequency generated by the frequency synthesizer 14 is specified by the control unit 100 according to the radio channel frequency. Further, the radio unit 10 is provided with a reception field strength detection unit (RSSI) 16.

The reception field strength detection section 16 receives a radio field signal (hereinafter referred to as RSS) of a radio frequency signal arriving from the base station.
I) is detected, and the detected value is notified to the control unit 100.

The received intermediate frequency signal output from the receiving section 13 is input to a demodulating section 21 of the modem section 20. The demodulation section 21 performs digital demodulation of the received intermediate frequency signal, thereby reproducing a digital communication signal.

TDMA decoding section 31 of TDMA section 30
Then, the digital communication signal is decomposed for each time slot according to the instruction of the control unit 100. Then, of the plurality of decomposed digital communication signals, the digital communication signal of the slot addressed to the own device is input to the communication unit 40.

The communication unit 40 includes an adaptive differential PCM transcoder (ADPCM TRANS CODER) 41 and a PCM codec (P
The digital speech signal is sequentially decoded by the adaptive difference PCM transcoder 41 and the PCM codec 42 and reproduced into an analog speech signal. The analog communication signal is amplified by a receiving amplifier (not shown) and then output from the speaker 43.

On the other hand, the transmission voice input to the microphone 44 is sequentially encoded by the PCM codec 42 and the adaptive difference PCM transcoder 41 to become a digital communication signal, which is input to the TDMA encoding unit 32.

In the TDMA encoding unit 32, the digital speech signal output from the adaptive difference transcoder 41 is inserted into a time slot specified 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 communication signal. The carrier signal thus modulated is
It is input to the transmission unit 15.

In the transmitting section 15, the modulated carrier signal is mixed with the transmitting local oscillation signal generated from the frequency synthesizer 14 so as to be frequency-converted to the radio channel frequency instructed by the control section 100. It is amplified to a predetermined transmission power level. The radio frequency signal thus frequency-converted and signal-amplified by the transmitting unit 15 is transmitted from the antenna 11 to the base station via the high-frequency switch 12.

The incoming call notifying section 50 notifies the user of an incoming call under the control of the control section 100 when there is an incoming call to the terminal device. The sounding body 51 emits an audible sound to notify the user. , Light-emitting body 52 that gives notification by light emission
And a vibrating body 53 that generates vibrations by, for example, an eccentric motor or the like to perform notification.

The memory section 60 uses a semiconductor memory such as a ROM or a RAM as a storage medium. The storage medium includes a control program of the control section 100, ID data of its own device necessary for authentication, various control data, In addition to storing various setting data, dial data corresponding to abbreviated dialing, and the like, image data for identifying an owner is stored as authentication information.

The interface 61 is a UIM card 6
2 is an interface connecting the two. UIM card 6
2 includes information on electronic money drawn from a bank or the like through a network such as a public network, in addition to contract information with a business operator operating a mobile communication system and user identification information;
The personal identification number for electronic money is stored.

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) or the like, and provides the user with the status of the own device (outgoing / incoming, remaining battery level, receiving intensity), dial data read from the memory unit 60, and a This is for visually indicating image data or the like captured by the camera.

The key input section 72 includes a key for performing a normal call function relating to outgoing / incoming calls such as a numeric keypad for inputting a dial number, and an incoming call notifying method (audible sound / light emission / vibrator / no notification). It is provided with keys for utilizing various settings such as switching and various functions.

The image processing section 80 performs image processing such as encoding on an image signal picked up by a camera 81 using a CCD or CMOS solid-state image pickup device to convert the image signal into image data of a predetermined format. Enter

The BT wireless unit 90 transmits and receives wireless signals to and from a personal computer or an EC system compatible device by using the BT method. Reference numeral 91 denotes an antenna for transmitting and receiving a wireless signal according to the BT method.

The control unit 100 includes, for example, a microcomputer as a main control unit.
In addition to controlling each part related to communication for performing the communication of the DMA system, editing control of dial data stored in the memory unit 60 in response to a user's request through the key input unit 72 and image input using the camera 81 And various controls such as communication control through the BT wireless unit 90.

The control unit 100 includes a UIM card 62
And a control function for performing a commercial transaction with a business entity on the network through the base station and a commercial transaction with the EC system compatible device through the BT wireless unit 90 based on the data stored in the base station.

Further, 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 determines the collation result. And a control function for restricting the communication function using the BT wireless unit 90 in accordance with

Next, the operation of the mobile radio terminal having the above configuration will be described. First, a control operation when setting a use restriction of the BT wireless unit 90 will be described. FIG. 2 is a flowchart showing this control operation.
Done by 0.

First, in step 2a, a display requesting the user to input authentication data is displayed on the display unit 71, and the process proceeds to step 2b. In step 2b, the camera 81 is controlled through the image processing unit 80. With this control, the image captured by the camera 81 is converted into an image by the image processing unit 80.
The image is processed in the form of image data of a predetermined format,
The data is input to the control unit 100, and the process proceeds to step 2c.

In step 2c, the image data input in step 2b and the authentication information stored in the memory unit 60 are collated by a predetermined algorithm, and if they match, the process proceeds to step 2d, but does not match. In this case, the process proceeds to step 2e. Note that the authentication information used here uses image data obtained by imaging a user-specific one such as a user's face.

At step 2d, a setting menu screen relating to use is displayed on the BT radio section 90, and the routine goes to step 2f. This setting menu screen is, for example, setting items as shown in FIG.

This setting item is set so that the BT radio section 90 is always disabled (0: always OFF), and is used only when authentication information is received and is correct (1: ON when authentication information is collated). "2: ON when dial lock is released", which is disabled when dial lock is enabled and disabled when dial lock is released, and disabled when connection to the public network is not possible, including when out of service area. "3: When connected to public network", available only when possible
"4: When the dial lock is released + when the public network is connected", available only when the dial lock is released and connection to the public network is available, "5: Always on"
There is.

In step 2e, the fact that the input authentication information is incorrect is displayed on the display section 71, and the process proceeds to step 2a to prompt the user to input the authentication information again. On the other hand, in step 2f, the designation of the above numbers 0 to 5 is received from the user through the key input unit 72, and the received numbers are recorded in the memory unit 60, and
Move to After that, the control unit 100 performs the use restriction control of the BT wireless unit 90 based on the number recorded in the memory unit 60. In step 2g, for example, as shown in FIG. 4, the received setting number is displayed, the completion of the reception is displayed on the display unit 71, and the process is terminated.

Next, a description will be given of a control operation for releasing a dial lock for restricting an input from the key input section 72 when the dial lock is set. FIG. 5 is a flowchart showing this control operation. This processing is performed by the control unit 100.

First, in step 5a, a display requesting the input of authentication information is performed, and the process proceeds to step 5a. In step 5b, the camera 81 is controlled through the image processing unit 80. Then, 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, input to the control unit 100, and proceeds to step 5c.

In step 5c, the image data input in step 5b and the authentication information stored in the memory unit 60 are collated by a predetermined algorithm, and if they match, the process proceeds to step 5d, while the two do not match. In this case, the process proceeds to step 5e.

In step 5d, the fact that the input authentication information is correct is displayed on the display unit 71, and the flow shifts to step 5f to release the dial lock and terminate the processing. Thereafter, the input from the key input unit 72 is not restricted until the dial lock is set again.

On the other hand, in step 5e, the fact that the input authentication information is incorrect is displayed on the display unit 71, and the process proceeds to step 5a to prompt the user to input the authentication information again.

Next, a control operation when a request to use the BT radio section 90 is given to the mobile radio terminal will be described. FIG. 6 is a flowchart showing this control operation. This process is started by the control unit 100 when the above request is made.

In step 6a, the use restriction setting of the BT radio section 90 recorded in the memory section 60 is referred to by the processing shown in FIG. It is determined whether or not is satisfied.

Here, when the use restriction condition corresponding to the use restriction setting of the BT radio section 90 is satisfied, the process shifts to step 6b.
Move to c.

In step 6b, the BT radio unit 90 is controlled to start Bluetooth communication,
As shown in (5), a display indicating that Bluetooth communication has been started is displayed on the display unit 71, and the process ends.

On the other hand, in step 6c, as shown in FIG. 8, for example, the BT radio section 90 cannot be used (Blue tooth).
A message indicating that communication cannot be performed is displayed on the display unit 71, and the process ends.

As described above, in the mobile radio terminal having the above configuration, the B
The use restriction of the T radio unit 90 can be easily performed. Once the user sets the use restriction of the BT radio unit 90, the B lock is set unless the dial lock is released or correct authentication information is input.
Blue tooth communication using the T wireless section 90 cannot be performed.

Therefore, according to the mobile radio terminal having the above configuration, even if a malicious third party tries to use the BT radio section 90 of the terminal illegally, the dial lock is released or correct authentication information is input. Since the electronic money cannot be used unless it is used, it is possible to prevent, for example, unauthorized use of electronic money stored in the UIM card 62 or unauthorized reading of various data stored in the memory unit 60.

The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the configuration is such that the authentication information is stored in the memory unit 60. Alternatively, for example, the authentication information may be stored in the UIM card 62. According to such a configuration, the use of the BT wireless unit 90 is restricted unless the UIM card 62 is connected to the interface 61.

In the above-described embodiment, the BT wireless unit 90 has been described as an example of the connection interface for connecting the external device.
(Infrared Data Association) The same effect can be obtained even with an infrared communication unit that performs infrared communication conforming to the standard or a UART unit that performs asynchronous serial communication.

Further, in the above-described embodiment, the use restriction setting of the BT wireless unit 90 is performed through the key input unit 72. However, the general subscriber telephone or the public telephone can be used to set the use restriction through the public network and the mobile communication network. The use restriction instruction of the BT radio unit 90 may be given to the mobile radio terminal.

As a specific configuration, as shown in FIG. 9, a special number such as "193 + xxxxxxxxxxxx" (subscriber number of the mobile radio terminal) is called, The control station of the mobile communication system receiving this calls the mobile radio terminal with a call signal including predetermined control information. Then, when the mobile radio terminal detects the control information from the call signal, the use restriction of the BT radio section 90 is enforced.

According to such a configuration, even if the user loses or stolen the mobile radio terminal, unauthorized use of the BT radio section 90 by a malicious third party can be performed by remote operation through the mobile communication network. Can be prevented.

In this case, when the use restriction process of the BT radio unit 90 shown in FIG. 2 is performed, a setting such as “3” or “4” is set to restrict use when connection to the public network is impossible. If the mobile radio terminal is out of service area, the BT radio unit 90 is restricted in its use. Therefore, even if remote operation through the mobile communication network is not possible, the BT radio unit 90 is illegally operated by a malicious third party. Use can be prevented. Others
It goes without saying that various modifications can be made without departing from the scope of the present invention.

[0057]

As described above, according to the present invention, the use of the second communication means is restricted according to the restriction request, and the information input from the authentication information input means is stored in the authentication information storage means in advance. Only when the authentication information matches the authentication information, the second communication means can be used.

Therefore, according to the present invention, once the restriction request is made, unless the correct authentication information is input,
Since the second communication means cannot be used, it is possible to provide a mobile wireless terminal capable of preventing unauthorized use of the second communication means by a malicious third party.

[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 a display unit during a use restriction operation of a BT wireless unit.

FIG. 4 is a diagram showing an example of a screen for notifying completion of setting displayed on a display unit when a use restriction setting is performed by a use restriction operation of a BT wireless unit.

FIG. 5 is a flowchart for explaining the operation of releasing the use restriction of the BT wireless unit of the mobile wireless terminal shown in FIG. 1;

FIG. 6 is a flowchart for explaining a control operation when there is a use request of the BT wireless unit of the mobile wireless terminal shown in FIG. 1;

FIG. 7 is a diagram illustrating a state in which communication via a BT wireless unit is started.

FIG. 8 is a diagram illustrating a state in which communication via the BT wireless unit cannot be performed;

FIG. 9 is a diagram for explaining a case in which the use of a BT wireless unit is restricted through a mobile communication network.

[Description of Signs] 10 radio section 12 high frequency switch (SW) 13 reception section 14 frequency synthesizer 15 transmission section 16 reception electric field strength detection section (RSSI) 20 modem section 21 demodulation section 22 modulation section DESCRIPTION OF SYMBOLS 30 ... TDMA part 31 ... TDMA decoding part 32 ... TDMA encoding part 40 ... Talking part 41 ... Adaptive difference PCM transcoder 42 ... PCM codec 50 ... Incoming notification part 51 ... Sounding body 52 ... Light emitting body 53 ... Vibrating body 60 ... Memory part Reference numeral 61: Interface 62: UIM card 70: User interface unit 71: Display unit 72: Key input unit 80: Image processing unit 81: Camera 90: BT wireless unit 100: Control unit

Claims (4)

[Claims] 1. A mobile radio terminal comprising: first communication means for wirelessly communicating with a base station; and second communication means for communicating with equipment other than the base station. An authentication information storage means for storing authentication information in advance. And authentication information input means for inputting authentication information; restricting use of the second communication means in response to a restriction request;
Thereafter, only when the information input from the authentication information input means matches the authentication information stored in the authentication information storage means, a use restriction control means for enabling the use of the second communication means is provided. A mobile radio terminal characterized by: 2. The first communication unit receives a restriction request via a base station, and the use restriction unit receives the restriction request when the first communication unit receives the restriction request. Restrict the use of the means,
Thereafter, the second communication unit can be used only when the information input from the authentication information input unit matches the authentication information stored in the authentication information storage unit. 2. The mobile wireless terminal according to 1. 3. The communication device according to claim 1, wherein the first communication unit includes a communication availability determination unit configured to determine whether communication with the base station is possible. 3. The mobile radio terminal according to claim 2, wherein when the first communication unit cannot communicate with the base station, use of the second communication unit is restricted. 4. The mobile radio terminal according to claim 1, wherein said authentication information storage means is detachable from said mobile radio terminal.