JP2006197372A - Mobile phone terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it possible to prevent a lost mobile phone terminal from being abused by others by a remote operation without any communication charge when being missing. <P>SOLUTION: The mobile phone terminal is provided with: a sub-address detection part 106 for detecting a sub-address added to a telephone number from a call setting message received through a radio part 101; an information analysis part 107 for discriminating whether the sub-address includes a command to execute switching to an abuse inhibition mode for inhibiting communication or not; and a system control part 109 for executing switching to the abuse inhibition mode in the case that it is discriminated that the sub-address includes the command. When switching to the abuse inhibition mode is executed, call control procedures for service start which are started by the reception of the call setting message are terminated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mobile phone terminal.

  In recent mobile phone terminals, various personal information and confidential information such as other people's telephone numbers and mail addresses are recorded as functions are enhanced. Some terminals have functions such as electronic commerce. If such a terminal is misplaced, lost, or stolen, there is a risk of unauthorized use by a third party. As countermeasures against such unauthorized use, there is an operation lock function using a personal identification number, but such terminal operation is impossible after the mobile phone terminal is lost.

In order to prevent unauthorized use by a third party after the mobile phone terminal is lost, remote terminal operation is required. As a conventional technique for realizing such a function, for example, a conventional mobile communication terminal disclosed in Patent Document 1 sets a message in the storage unit of the terminal in advance, and a message in which a head part of a received message is set If it matches, the mobile communication terminal has a function of disabling functions such as transmission to an arbitrary destination and reading / writing of personal information.
In addition, the mobile phone disclosed in Patent Document 2 counts the number of call signals input via a line, connects to the line when the number of calls exceeds a preset number, and receives an input of a personal identification number. If the password matches the preset one, the mode is switched to the crime prevention mode.
In addition, the mobile phone disclosed in Patent Document 3 maximizes the ringtone when the number of calls from the same type or the same number of telephones is preset during the preset incoming time, A misplaced message is displayed and the call is prohibited.

JP 2003-338875 A Japanese Patent Laid-Open No. 9-312687 JP 2001-086228 A

As described above, the conventional mobile phone terminals described in Patent Document 1 and Patent Document 2 are premised on the reception and reception of mail at the corresponding terminals. Therefore, a communication fee is required to use this function.
Moreover, since the method of Patent Document 1 requires a communication terminal having a mail transmission function, it is difficult to respond immediately when the mobile phone terminal is lost.
In addition, in the mobile phone disclosed in Patent Document 3, when the number of incoming calls exceeds the set number of times, the unauthorized use prohibition mode is entered, so no charge is incurred. Cannot switch to the prohibited mode. In addition, if an incoming call from a third party exceeds the set number of times while it is lost, it may happen that the unauthorized use prohibition mode is entered regardless of the owner's intention.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a mobile phone terminal having a function of preventing unauthorized use of others by remote control without incurring a communication fee when lost. .

  A cellular phone terminal according to the present invention includes a radio unit that transmits and receives radio signals, a subaddress detection unit that detects a subaddress added to a telephone number from a call setting message received via the radio unit, and a communication within the subaddress. If the information analysis unit that determines whether or not the command for executing the switch to the unauthorized use prohibition mode is prohibited and the information analysis unit determines that the command is included in the subaddress, And a system control unit for switching to the unauthorized use prohibition mode, and when the switch to the unauthorized use prohibition mode is executed, the call control procedure for starting the call started by receiving the call setting message is terminated. is there.

  According to the present invention, if the subaddress added to the telephone number includes a command for executing the switch to the unauthorized use prohibition mode, the switch to the unauthorized use prohibition mode is executed and the communication is terminated. In addition, when a mobile phone terminal is lost, it is possible to prevent unauthorized use by others by remote control that does not incur communication charges.

Embodiments of the present invention will be described below.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of a mobile phone terminal 100 according to Embodiment 1 of the present invention. The mobile phone terminal 100 is a W-CDMA mobile phone terminal.
As shown in the figure, the mobile phone terminal 100 includes a radio unit 101, a line I / F unit 102, a demultiplexing unit 103, an audio CODEC unit 104, a video CODEC unit 105, a sub-address detection unit 106, an information analysis unit 107, and a personal information recording. Unit 108, system control unit 109, memory 111, key input unit 112, microphone 113, speaker 114, camera 115, and display unit 116.
The sub-address detection unit 106 and the information analysis unit 107 may be configured by hardware, or may be configured by software that operates the processor of the system control unit 109.
The personal information recording unit 108 stores personal information such as an individual schedule, an acquaintance's telephone number, and an e-mail address.

Next, the operation will be described.
First, the operation of the mobile phone terminal 100 during a call will be described.
Here, the mobile phone terminal 100 on the outgoing side is terminal A, and the mobile phone terminal 100 on the incoming side is terminal B. Terminal A receives the input of the telephone number of terminal B via key input unit 112 and performs a call origination operation. The input telephone number is transmitted to the system control unit 109, and the system control unit 109 controls the line I / F unit 102 to set up a call with the line network. Call setting sequence data from the line I / F unit 102 is converted from a digital signal to an RF signal in the radio unit 101 and transmitted as a radio signal.
When the terminal B receives the radio signal from the terminal A, the radio unit 101 converts the RF signal into a digital signal and supplies the digital signal to the line I / F unit 102. The line I / F unit 102 performs call control based on the input digital signal.
When the call control is completed normally, in the terminal A, the audio data input from the microphone 113 is encoded in the audio CODEC unit 104, and encoded audio data is generated. The video data input from the camera 115 is encoded by the video CODEC unit 105, and encoded video data is generated. The encoded video data and audio data are converted into H.264 data by the demultiplexing unit 103. Multiplexed according to the H.223 format. The multiplexed data is transmitted to the terminal B via the line I / F unit 102 and the radio unit 101.

When the terminal B receives the wireless signal transmitted from the terminal A, the terminal B supplies the received data to the demultiplexing unit 103 via the wireless unit 101 and the line I / F unit 102. The demultiplexing unit 103 converts the received data to H.264. The audio data and video data encoded according to the H.223 format are separated.
The encoded audio data and encoded video data separated by the demultiplexing unit 103 are supplied to the audio CODEC unit 104 and the video CODEC unit 105, respectively. The encoded audio data is decoded by the audio CODEC unit 104 to generate audio data. The encoded video data is decoded by the video CODEC unit 105 to generate video data. The generated audio data is output from the speaker 114, and the video data is displayed on the display unit 116.
When the communication is terminated, the call control key is pressed via the key input unit 112 so that the system control unit 109 controls the line I / F unit 102 to execute the call release sequence. If so, the call is terminated.

Here, a call control procedure until the start of a call between the terminals A and B will be described with reference to FIG. First, the SETUP message is sent from the terminal A to the circuit network by designating the number of the terminal B. The line network designates the number of terminal A to terminal B and sends a SETUP message, and sends CALL PROC to terminal A. Terminal B sends CALL CONF to the network. Next, the network sends RB SETUP to terminal A and terminal B. At this time, a screen notifying the incoming call is displayed on the display unit 116 of the terminal B. Next, ALERT is sent from the terminal B to the circuit network, and at the same time, the terminal B sounds a ring tone. The network that has received ALERT from terminal B sends ALERT to terminal A, and a ringing tone is output from speaker 114 of terminal A that has received the ALERT.
In the terminal B, when the response key is pressed by the key input unit 112, the CONNECT is transmitted from the terminal B to the circuit network, and the CONNECT is transmitted from the circuit network to the terminal A. The terminal A that has received CONNECT sends CONNECT ACK to the line network, and sends CONNECT ACK to the terminal B from the line network. When terminal B receives CONNACK, a call is started, and charging is started from this point.

  Next, the call control procedure until the end of the call between the terminals A and B will be described with reference to FIG. When the call end key is pressed by the key input unit 112 at the terminal B (or the terminal A), the DISCONNECT is sent from the terminal B to the line network. In response to this, the line network sends DISCONNECT to terminal A. Receiving DISCONNECT, terminal A sends RELEASE to the network. The network that has received RELEASE sends RELEASE to terminal B. When terminal B receives RELEASE, terminal B sends RELEASE COMPLEAT to the network. In response, the line network sends RELEASE COMPLEAT to terminal A, and the call is terminated.

Next, switching operation of the mobile phone terminal 100 to the unauthorized use prohibition mode according to the first embodiment will be described.
FIG. 4 is a flowchart of the operation of switching the mobile phone terminal 100 to the unauthorized use prohibition mode according to the first embodiment.
Here, a case where terminal B is switched to the unauthorized use prohibition mode by remote operation using terminal A will be described. The terminal A on the transmission side inputs a subaddress such as “1234” after the telephone number of the terminal B on the reception side via the key input unit 112 and transmits the result. The value of this sub-address is registered in advance as a command value for shifting to the unauthorized use prohibition mode in the memory 111 of the terminal B.
In step ST41, the terminal B receives a call from the terminal A via the line network, and supplies the telephone number and subaddress of the terminal A in the call setting sequence data from the line I / F unit 102 to the subaddress detecting unit 106.
In step ST42, the sub-address detection unit 106 determines whether or not the supplied data includes a sub-address. If the sub-address is not included, the process proceeds to step ST46, and the line I / F unit 102 performs the process shown in FIG. The call setting sequence shown in FIG. 2 is executed, and a call is started in step ST47. Furthermore, when a call end key is pressed via the key input unit 112, a call release sequence is executed by the line I / F unit 102 in step ST48, and the call is ended.

On the other hand, if it is determined in step ST42 that the sub address is included, the information of the sub address is supplied to the information analysis unit 107.
In step ST43, the information analysis unit 107 analyzes the subaddress and collates it with the command stored in the memory 111.
If the subaddress and the command do not match in step ST44, the process proceeds to step ST46 to match the subaddress in call setting, and if it matches, the call setting sequence proceeds normally. On the other hand, if the subaddress matches the command, the process proceeds to step ST45, and the information analysis unit 107 notifies the system control unit 109 of the result. The system control unit 109 shifts the mobile phone terminal 100 to the unauthorized use prohibition mode. When shifting to the unauthorized use prohibition mode, the mobile phone terminal 100 disables transmission to an arbitrary number. In addition, writing to and reading from the personal information registered in the personal information recording unit 108 is prohibited. Further, all operations operated via the key input unit 112 are prohibited.

  Next, the communication procedure until the transition to the unauthorized use prohibition mode will be described with reference to FIG. First, in the same manner as the call start procedure shown in FIG. At this time, a command for shifting to the unauthorized use prohibition mode is added to the subaddress together with the telephone number of the terminal B, and the transmission is made. The network sends SETUP to terminal B. When the terminal B receives the SETUP, the terminal B detects information from the subaddress added together with the telephone number of the terminal A. The information analysis unit 107 of the terminal B analyzes the sub-address information, determines a command match, executes the command if the command to the unauthorized use prohibition mode is recognized, shifts the terminal B to the unauthorized use prohibition mode, RELEASE COMPLEAT is sent to the line network to end communication. Terminal A receives RELEASE COMPLEAT from the network and ends communication.

  As described above, according to the first embodiment, when the mobile phone terminal 100 is shifted to the unauthorized use prohibition mode by remote operation, the subaddress is added with the command for shifting to the unauthorized use prohibition mode and then transmitted. The receiving terminal can shift to the unauthorized use prohibition mode before starting a call, and can prevent unauthorized use by others without incurring a communication fee.

Note that the value of the command for shifting to the unauthorized use prohibition mode registered in the memory 111 can be changed to an arbitrary value, thereby improving security.
A plurality of commands can be registered in the memory 111 in addition to the command for shifting to the unauthorized use prohibition mode. By causing each command to correspond to an operation that can be input via the key input unit 112, the mobile phone terminal 100 can be remotely operated. The information analysis unit 107 analyzes whether or not these commands are included in the sub address, and notifies the system control unit 109 of the result.
For example, a command for sending an image captured by the camera 115 to an address registered in advance in the memory 111 can be considered. This function can be used for the purpose of obtaining a clue of a place where the cellular phone terminal 100 is left misplaced.
Further, when the mobile phone terminal 100 has a position information acquisition function such as a GPS reception function, a command for converting the acquired position information into text and sending an e-mail to an address registered in advance in the memory 111 Can be considered. Alternatively, a call may be made to a telephone number registered in advance in the memory 111 to report the position information by voice. This function can also be used for the purpose of obtaining information on the location where the mobile phone terminal 100 is located. In this case, the destination mail address and the telephone number may be registered in the memory 111 in advance, but may be transmitted as additional information at the time of command transmission.

Embodiment 2. FIG.
FIG. 6 is a block diagram showing a configuration of the mobile phone terminal 200 according to Embodiment 2 of the present invention. The same reference numerals as those in FIG. 1 represent the same components. As shown in the figure, the mobile phone terminal 200 includes a password verification unit 110. The password verification unit 110 may be configured by hardware, or may be configured by software that operates the processor of the system control unit 109.

Next, the operation will be described.
FIG. 7 is a flowchart of an operation for switching the mobile phone terminal 200 to the unauthorized use prohibition mode according to the second embodiment.
Here, a case where terminal B is switched to the unauthorized use prohibition mode by remote operation using terminal A will be described. The terminal A on the sending side adds a personal identification number and a command for shifting to the unauthorized use prohibition mode as a subaddress after the telephone number of the terminal B on the receiving side via the key input unit 112. send. This password is registered in advance in the memory 111 of the terminal B.

The process up to step ST43 is the same as that of the first embodiment shown in FIG. In Embodiment 2, the personal identification number collating unit 110 determines whether the personal identification number included in the subaddress information analyzed in Step ST43 matches the personal identification number registered in advance in the memory 111 in Step ST71.
If the passwords do not match, the process proceeds to step ST46, and a call setting sequence is executed.
On the other hand, if it matches the password registered in the memory 111, the process proceeds to step ST44, where it is checked against a command for shifting to the unauthorized use prohibition mode registered in advance in the memory 111. The subsequent processing is the same as that of the first embodiment shown in FIG.

  As described above, according to the second embodiment, the security code is included in the sub-address together with the command for shifting to the unauthorized use prohibition mode, the password is authenticated on the receiving side, and unauthorized use is prohibited only when the authentication matches. Since the mode is shifted, it is possible to prevent the shift to the unauthorized use prohibition mode contrary to the intention of possessing the terminal.

It should be noted that the value of the transition command to the unauthorized use prohibition mode and the personal identification number registered in the memory 111 can be changed to arbitrary values, thereby improving security.
A plurality of commands can be registered in the memory 111 in addition to the command for shifting to the unauthorized use prohibition mode.

It is a block diagram which shows the structure of the mobile telephone terminal by Embodiment 1 of this invention. It is a figure which shows the call control procedure until the telephone call between terminals. It is a figure which shows the call control procedure until the telephone call between terminals is complete | finished. It is a flowchart of the switching operation | movement to the unauthorized use prohibition mode of a mobile telephone terminal by Embodiment 1 of this invention. It is a figure which shows the communication procedure until it transfers to unauthorized use prohibition mode by Embodiment 1 of this invention. It is a block diagram which shows the structure of the mobile telephone terminal by Embodiment 2 of this invention. It is a flowchart of the switching operation | movement to the unauthorized use prohibition mode of a mobile telephone terminal by Embodiment 2 of this invention.

Explanation of symbols

  100, 200 mobile phone terminal, 101 wireless unit, 102 line I / F unit, 103 demultiplexing unit, 104 audio CODEC unit, 105 video CODEC unit, 106 subaddress detection unit, 107 information analysis unit, 108 personal information recording unit, 109 System control unit, 110 PIN verification unit, 111 memory, 112 key input unit, 113 microphone, 114 speaker, 115 camera, 116 display unit.

Claims (6)

A radio unit for transmitting and receiving radio signals;
A subaddress detection unit that detects a subaddress added to a telephone number from a call setup message received via the wireless unit;
An information analysis unit for determining whether or not a command for executing switching to an unauthorized use prohibition mode for prohibiting communication is included in the subaddress;
When the information analysis unit determines that the command is included in the subaddress, the information analysis unit includes a system control unit that executes switching to an unauthorized use prohibition mode,
A mobile phone terminal characterized in that when the switching to the unauthorized use prohibition mode is executed, the call control procedure for starting a call started by receiving the call setting message is terminated. A personal information recording unit for storing personal information is provided.
The mobile phone terminal according to claim 1, wherein access to the personal information recording unit is prohibited after shifting to the unauthorized use prohibition mode. It has a memory for registering commands that execute switching to unauthorized use prohibition mode,
The information analysis unit determines whether the command registered in the memory is included in the subaddress,
3. The mobile phone terminal according to claim 1, wherein the command registered in the memory can be changed. A password verification unit for verifying the password for personal authentication included in the subaddress;
The mobile phone according to any one of claims 1 to 3, wherein the sub-address information is analyzed by the information analysis unit only when the password verification by the password verification unit is successful. Phone terminal.   The mobile phone terminal according to claim 4, wherein the personal identification number can be changed. The information analysis unit determines whether or not a command for notifying a specific transmission destination of information indicating the position of the mobile phone terminal is included in the subaddress,
6. The system control unit according to claim 1, wherein the system control unit executes the command when the information analysis unit determines that the command is included in the subaddress. The mobile phone terminal according to any one of the above.

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