JP2010068047A - System, method and program for mobile terminal protection - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal protection system capable of turning a cellular phone into an inoperable state when the cellular phone is lost or the like, and safely and easily canceling the inoperable state. <P>SOLUTION: A control information transmission means 91 transmits control information, instructing a shift to the inoperable state to a mobile terminal 80, to the mobile terminal 80. An operation stop means 82 turns the mobile terminal 80 into the inoperable state when receiving the control information from a mobile terminal controller 90 which controls the state of the mobile terminal 80. An operation cancellation means 83 cancels the inoperable state of the cellular phone 80 when a storage device 81 which is attachable and detachable to/from the mobile terminal 80 and stores information for canceling the inoperable state of the mobile terminal 80 is mounted on the mobile terminal 80. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a portable terminal protection system that makes a portable terminal inoperable when the portable terminal is lost, and further releases the inoperable state, and a portable terminal and a portable terminal applied to the portable terminal protection system The present invention relates to a protection method and a portable terminal protection program.

  The portable terminal is carried in various places by the owner in a pocket or bag. For this reason, there are increasing cases of inadvertent loss, theft, misplacement, etc. that go into the hands of others against the will of the person. In such a case, important personal information stored in the mobile terminal is often referred to and misused by other people. Therefore, various techniques have been proposed to solve such problems.

  Patent Document 1 describes a security method for SIM card information. The SIM card information security method described in Patent Document 1 compares the input identification code with the identification code stored in the portable terminal when the SIM card (Subscriber Identity Module card) is attached to the portable terminal. To do. If the identification codes match, the portable terminal displays internal information. If the identification codes do not match, the personal information in the SIM card is transmitted to the contact of the report destination telephone number, and the information in the portable terminal is deleted.

  Patent Document 2 describes a mobile communication terminal that makes it possible to change the appearance design. In the mobile communication terminal described in Patent Document 2, a display panel made of electronic paper is attached to an externally exposed portion, and a casing image based on image data is displayed according to a command from the control unit.

  Patent Document 3 describes a mobile phone terminal system for preventing unauthorized use when a mobile phone terminal is lost. The mobile phone terminal system described in Patent Document 3 is configured to detect the ID from an IC tag card having ID information corresponding to the ID information stored in the IC tag built in the mobile phone when the mobile terminal is lost or stolen. Read information. The mobile phone management server changes the lost mobile phone to the inoperable state based on the ID information.

  Patent Document 4 describes a safety protection method against loss of data stored in a portable data storage device. Patent Document 4 discloses a security protection method in which an alarm to a user that a portable data storage device is lost when the portable data storage device is outside the communication range of a wireless communication link when a predetermined period has passed. I do.

Japanese Patent Laying-Open No. 2003-264631 (paragraphs 0025 to 0028, FIG. 1) Japanese Patent Laying-Open No. 2005-210320 (paragraphs 0024 and 0032, FIGS. 1 and 6) Japanese Patent Laying-Open No. 2006-279572 (paragraphs 0058 to 0062, FIG. 2) JP 2004-536534 A (paragraphs 0061 to 0062)

  In the SIM card information security method described in Patent Document 1, when a mobile terminal is lost, the personal information stored in the mobile terminal is deleted, so the terminal is discovered and the personal information is recovered. There is a problem that it is not possible to easily perform the work to be performed.

  In addition, in the mobile phone terminal system described in Patent Document 3, an IC tag card having ID information that has a one-to-one correspondence with ID information stored in the mobile phone is used to cancel the inoperable state of the mobile phone. The inoperable state cannot be canceled easily.

  Therefore, the present invention is applied to a mobile terminal protection system that can make a mobile phone inoperable when the mobile phone is lost, and can safely and easily cancel the inoperable state, and the mobile terminal protection system. It is an object to provide a portable terminal, a portable terminal protection method, and a portable terminal protection program.

  A portable terminal protection system according to the present invention includes a portable terminal, a portable terminal control device that controls the state of the portable terminal, and a memory that stores information for releasing the inoperable state of the portable terminal that is detachable from the portable terminal. The mobile terminal control device includes control information transmitting means for transmitting to the mobile terminal control information for instructing the mobile terminal to shift to the inoperable state, and the mobile terminal is controlled from the mobile terminal control device. An operation stopping means for making the portable terminal inoperable when information is received, and an operation releasing means for releasing the inoperable state of the portable terminal when the portable terminal is equipped with a storage device And

  When the mobile terminal according to the present invention receives control information for instructing the mobile terminal to shift to the inoperable state from the mobile terminal control device that controls the state of the mobile terminal, the operation is stopped so that the mobile terminal is in an inoperable state. And an operation release means for releasing the inoperable state of the mobile terminal when a storage device that is detachable from the mobile terminal and stores information for releasing the inoperable state of the mobile terminal is mounted. It is characterized by that.

  In the portable terminal protection method according to the present invention, the portable terminal control device that controls the state of the portable terminal transmits control information that instructs the portable terminal to shift to the inoperable state, and the portable terminal receives the control information. When the mobile terminal is equipped with a storage device that stores information for making the mobile terminal inoperable, removable and removable from the mobile terminal, and storing information for canceling the inoperable state of the mobile terminal, It is characterized by canceling the impossible state.

  The portable terminal protection program according to the present invention operates a computer when receiving control information that instructs the computer used as the portable terminal to shift to an inoperable state from a control device that controls the state of the computer. Operation stop processing for disabling the computer and operation cancellation processing for canceling the inoperable state when a storage device that is detachable from the computer and stores information for canceling the computer inoperable state is executed. It is characterized by making it.

  According to the present invention, when a mobile phone is lost, the mobile phone can be made inoperable, and the inoperable state can be safely and easily released.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following explanation, suppressing a normal operation of the mobile terminal (for example, an operation for displaying internal information on the screen, an operation for making a call, etc.) is described as “locking”. Returning the suppressed state to the original state is referred to as “unlocking”. In addition, a state where the mobile terminal needs to be locked due to loss or theft is referred to as a lost state.

  FIG. 1 is a block diagram showing an embodiment of a portable terminal protection system according to the present invention. The portable terminal protection system according to the present invention includes a portable terminal 100 and a portable terminal control device 200. The mobile terminal 100 and the mobile terminal control device 200 are connected via a communication network 300. In the example illustrated in FIG. 1, two mobile terminals 100 are illustrated, but the number of mobile terminals 100 is not limited to two, and may be one or three or more.

  The communication network 300 is a wireless communication network or a mobile phone network, but the form of the communication network 300 is not particularly limited.

  The mobile terminal control device 200 includes a communication message transmission unit 201. The communication message transmission unit 201 transmits a message (hereinafter referred to as an information protection instruction) that instructs the mobile terminal 100 to lock.

  The communication message transmission unit 201 is realized by the CPU of the mobile terminal control device 200 that operates according to a program, for example. For example, the program may be stored in a storage unit (not shown) of the mobile terminal control device 200, and the CPU may read the program and operate as the communication message transmission unit 201 according to the program.

  The mobile terminal 100 includes a reception control unit 101, a communication analysis control unit 102, a lost state control unit 105, an electronic paper control unit 106, a USB communication control unit 107, an LED (Light Emitting Diode) control unit 108, Vibrator control unit 109, alarm control unit 110, electronic paper 111, I / O (Input / Output) port 112, LED 113, vibrator 114, speaker 115, lost state storage unit 116, timer control unit 117, a SIM card reading control unit 118, a SIM card 119, a keyboard control unit 120, and a keyboard 121.

  The reception control unit 101 receives a communication message from the mobile terminal control device 200, an information protection command, and a communication message from another mobile terminal 100. The reception control unit 101 receives a communication message from the mobile terminal control device 200 and causes the communication analysis control unit 102 to analyze the received communication message.

  The communication analysis control unit 102 includes a communication message analysis unit 103 and an authentication unit 104. The communication message analysis unit 103 analyzes whether the communication message is a message including an information protection command based on the communication message received from the mobile terminal control device 200. Based on the communication message analyzed by the communication message analysis unit 103, the authentication unit 104 determines whether the communication message is a message for the terminal itself.

  For example, the mobile terminal 100 includes a storage unit (not shown) that stores an identifier for identifying the terminal, and the identifier of the terminal that identifies the transmission destination of the message in the communication message from the mobile terminal control device 200 May be included. In this case, the authentication unit 104 compares the identifier of the terminal stored in the storage unit with the identifier of the terminal included in the received message, and when the identifier is the same, Although it may be determined that there is, the method for determining the terminal itself is not limited to such a method.

  When the received communication message is a message for the terminal including the information protection command, the communication analysis control unit 102 causes the lost state control unit 105 to perform various operations when lost.

  The lost state storage unit 116 is a storage unit that stores information indicating whether or not the mobile terminal 100 is in a lost state (hereinafter referred to as a lost state storage flag). The lost state storage unit 116 is realized by, for example, a nonvolatile memory such as a flash memory. In the following explanation, when the lost state storage flag is “valid”, it means that it is in a lost state, and when the lost state storage flag is “invalid”, it means that it is not in a lost state. explain.

  The lost state control unit 105 controls operations of the electronic paper control unit 106, the USB communication control unit 107, the LED control unit 108, the vibrator control unit 109, the alarm control unit 110, and the timer control unit 117.

  The electronic paper control unit 106 controls the contents displayed on the electronic paper 111 in response to an instruction from the lost state control unit 105. The electronic paper 111 is a display device capable of electrically rewriting display contents. For example, the electronic paper 111 is disposed on the rear surface of the casing of the mobile terminal 100. In this embodiment, a case where electronic paper is used as a display device will be described as an example. However, the display device is not limited to electronic paper. For example, the display device may be an LCD (Liquid Crystal Display) or the like.

  Note that the electronic paper has a feature that the display can be maintained even when the power is turned off, so that the message can be displayed even when the power is turned off. Therefore, by using electronic paper as a display device, there is an advantage that messages can be displayed for a long period of time.

  The USB communication control unit 107 controls communication of data transmitted from the I / O port 112 to the external device in response to an instruction from the lost state control unit 105. The I / O port 112 is an external connection terminal used for input / output of information with an external device. Examples of the external connection terminal used as the I / O port 112 include a USB connector, but the form of the external connection terminal is not limited to the USB connector.

  The LED control unit 108 controls the light emission of the LED 113 in response to an instruction from the lost state control unit 105. The LED 113 is a light emitter that emits light when an electric current is passed. For example, when the portable terminal 100 is in a lost state, the LED 113 blinks in accordance with an instruction from the LED control unit 108. In this embodiment, a case where an LED is used as a light emitter will be described as an example, but the light emitter is not limited to an LED.

  The vibrator control unit 109 controls the vibration of the vibrator 114 in accordance with an instruction from the lost state control unit 105. For example, when the mobile terminal 100 is in a lost state, the vibrator 114 rings according to an instruction from the vibrator control unit 109.

  The alarm control unit 110 causes the speaker 115 to output sound or the like in response to an instruction from the lost state control unit 105. For example, when the mobile terminal 100 is in a lost state, the speaker 115 outputs an alarm (for example, an alarm sound or an alarm sound) in response to an instruction from the alarm control unit 110.

  In the present embodiment, the case where the mobile terminal 100 includes the LED 113, the vibrator 114, and the speaker 115 will be described. However, the mobile terminal 100 is not limited to the case where the LED 113, the vibrator 114, and the speaker 115 are all provided. For example, the mobile terminal 100 may include only a part of these. Hereinafter, a state in which a lost state is displayed outside due to blinking of an LED, ringing of a vibrator, or the like will be referred to as a warning state.

  When the LED 113, the vibrator 114, and the speaker 115 are in a warning state, the timer control unit 117 instructs the LED control unit 108, the vibrator control unit 109, and the alarm control unit 110 to stop the warning state for a certain period of time.

  The SIM card 119 is a storage device that stores information for determining whether the SIM card reading control unit 118 is a maintenance SIM card. The maintenance SIM card is a detachable storage device used to unlock the mobile terminal 100 in a lost state. When the SIM card reading control unit 118 determines that the maintenance SIM card is attached to the mobile terminal 100, the SIM card reading control unit 118 unlocks the mobile terminal 100. The maintenance SIM card is attached to the portable terminal 100 by, for example, a telecommunications carrier.

  For example, if information indicating that the SIM card is a maintenance SIM card is stored in the SIM card 119, the SIM card reading control unit 118 indicates that the maintenance SIM card is mounted on the portable terminal 100. Sometimes, information stored in the SIM card 119 may be read, and it may be determined that it is a maintenance SIM card, and the mobile terminal 100 may be unlocked.

  In this embodiment, a case where a SIM card is used as the storage device will be described as an example. However, the storage device is not limited to a case where a SIM card is used. For example, the storage device may be another IC card or the like. In this case, the SIM card reading control unit 118 may determine whether the mounted IC card is a maintenance IC card.

  For example, when the user of the mobile terminal 100 detects an operation performed via the keyboard 121 that is an input device, the keyboard control unit 120 performs control according to the detected content. For example, when the keyboard control unit 120 detects a power-off operation via the keyboard 121, the lost state control unit 105 turns off the mobile terminal 100.

  In this embodiment, a case where a keyboard is used as an input device will be described as an example, but the input device is not limited to a keyboard.

  The system activation control unit 122 causes the SIM card reading control unit 118 to determine whether the SIM card 119 is a maintenance SIM card. In addition, when the portable terminal 100 includes a storage unit (not shown) that temporarily stores the information protection command when the portable terminal 100 cannot receive the information protection command from the portable terminal control device 200. If there is, the system activation control unit 122 receives the temporarily stored information protection command from the portable terminal control device 200.

  In the following description, “when the system is activated” means when the power of the mobile terminal 100 is turned on in response to the operation of the user of the mobile terminal 100.

  A reception control unit 101, a communication analysis control unit 102 (more specifically, a communication message analysis unit 103, an authentication unit 104), a lost state control unit 105, an electronic paper control unit 106, a USB communication control unit 107, The LED control unit 108, the vibrator control unit 109, the alarm control unit 110, the timer control unit 117, the SIM card reading control unit 118, and the keyboard control unit 120 are, for example, portable terminals that operate according to a portable terminal protection program This is realized by 100 CPUs. For example, the portable terminal protection program may be stored in a storage unit (not shown) of the portable terminal 100, and the CPU may read the portable terminal protection program and operate as each control unit according to the portable terminal protection program.

  Next, the operation will be described. In the following description, a case will be described in which the mobile terminal 100 is in a state in which a communication message can be received from the mobile terminal control device 200 in the initial state, and the lost state storage flag is invalid.

  FIG. 2 is an explanatory diagram illustrating an example until an information protection command is transmitted. When the mobile terminal is lost or stolen, the user of the mobile terminal applies for a loss or theft report to, for example, a telecommunications carrier (step S11). The telecommunications carrier notifies the administrator (also referred to as security control) of the portable terminal control device 200 of the application content and the like (step S12). The administrator collates the application contents with the information stored in the database (step S13), and determines whether the contents are correct. When it is determined that the information is correct, the mobile terminal control device 200 transmits an information protection command to the target mobile terminal 100 (step S15), for example, according to an instruction from the administrator (step S14).

  FIG. 3 is a flowchart illustrating an example of processing until the lost state flag is validated. When the reception control unit 101 of the mobile terminal 100 receives a communication message from the mobile terminal control device 200 (YES in step S21), the communication analysis control unit 102 analyzes the communication message in the communication message analysis unit 103 ( Step S22). If the communication message is not an information protection command, it waits again until it receives a communication message from the portable terminal control device 200 (NO in step S23). When the communication message is an information protection command (YES in step S23), the communication analysis control unit 102 determines in the authentication unit 104 whether the communication message is a command for the terminal itself (step S24). If the communication message is not a command for the terminal itself, it waits again until it receives a communication message from the portable terminal control device 200 (NO in step S25). If the communication message is a command for the terminal itself (YES in step S25), the lost state storage flag stored in the lost state storage unit 116 is validated (step S26).

  FIG. 4 is a flowchart illustrating an example of processing when the lost state flag becomes valid. In the present embodiment, the lost state control unit 105 cancels the warning state for a certain period when any key on the keyboard is pressed in the lost state, and the power key provided on the keyboard 121 is pressed for a long time. A case where the power is turned off will be described as an example. However, the method of canceling the warning state for a certain period and the method of turning off the power are not limited to such a method.

  When the lost state control unit 105 determines that the lost state storage flag is valid, the USB communication control unit 107 suppresses data communication transmitted from the I / O port 112 to the external device (step S31). The paper control unit 106 displays a message prompting the electronic paper 111 to collect lost items (step S32). FIG. 5 is an explanatory diagram illustrating an example in which the mobile terminal 100 includes the electronic paper 111 on the back surface of the housing. In the example shown in FIG. 5, a message prompting for the collection of lost items is displayed in response to an instruction from the electronic paper control unit 106 from a state where nothing is displayed on the electronic paper 111 (FIG. 5A). The state displayed in Fig. 5 (b).

  Thereafter, the portable terminal 100 repeats the following steps S34 to S46 until the power is turned off (step S33).

  The LED control unit 108 causes the LED 113 to blink (step S34), the alarm control unit 110 generates an alarm sound from the speaker 115 (step S35), and the vibrator control unit 109 sounds the vibrator 114 (step S36). These processes are repeated until the keyboard control unit 120 detects an operation in which a key on the keyboard 121 is pressed (NO in step S37).

  In this way, each control unit displays a warning so that it can be visually recognized from the outside, whereby it is possible to determine by appearance that the mobile terminal has been lost or stolen. That is, it can be determined that the mobile terminal is lost or stolen from the appearance, and has the effect of suppressing the crime of misusing this mobile terminal. Therefore, it is possible to prevent malicious criminal acts (for example, reselling acts) and improve safety.

  When the keyboard control unit 120 detects that a key on the keyboard 121 has been pressed (YES in step S37), the keyboard control unit 120 determines whether the key is a power key (step S38). When the keyboard control unit 120 determines that the pressed key is the power key (YES in step S38), the keyboard control unit 120 further determines whether the operation is a long press (step S39).

  If the keyboard control unit 120 determines that the pressed key is not a power key (NO in step S38) or that the pressed key is a power key but has not been pressed long (NO in step S39), the LED The control unit 108 stops the blinking of the LED 113 (step S40), the alarm control unit 110 stops the alarm sound generated from the speaker 115 (step S41), and the vibrator control unit 109 stops ringing of the vibrator 114. (Step S42). Then, the timer control unit 117 once again performs these processes in which the LED control unit 108 blinks the LED 113, the alarm control unit 110 generates an alarm sound from the speaker 115, and the vibrator control unit 109 sounds the vibrator 114. The time is stopped (step S43).

  By stopping the warning state for a certain period of time, for example, even if a malicious user determines that the warning state could be temporarily released, the malicious use of a change in state that would cause the warning state to re-enter after a certain period of time Will be given to the person. As a result, a malicious user can be mentally affected, and abuse can be prevented in advance.

  On the other hand, when the keyboard control unit 120 determines that the power key has been pressed for a long time (YES in step S39), the lost state control unit 105 turns off the portable terminal 100 (step S44) and ends the process. .

  If the battery runs out during the lost state control (YES in step S45), the mobile terminal 100 is turned off (step S46), and the process ends.

  FIG. 6 is a flowchart illustrating an example of a process for determining to release the lock. The maintenance SIM card for unlocking the mobile terminal is attached to the mobile terminal 100 at a customer service shop of a telecommunications carrier that sells mobile phones, for example. Otherwise, the maintenance SIM card is not attached to the portable terminal 100, and the portable terminal 100 is not unlocked.

  After the SIM card 119 is installed in the mobile terminal, for example, when the telecommunications carrier turns on the power of the mobile terminal 100, the system activation control unit 122 causes the SIM card read control unit 118 to perform maintenance. It is determined whether a SIM card is attached (inserted) (step S51). When the SIM card reading control unit 118 determines that the maintenance SIM card 119 is installed (YES in step S51), the lost state control unit 105 invalidates the lost state storage flag (step S52).

  If the SIM card reading control unit 118 determines that the maintenance SIM card 119 is not attached (NO in step S52), the lost state control unit 105 determines whether or not the lost state storage flag is valid (step). S53). If the lost state storage flag is valid (YES in step S53), the processing after step S31 shown in FIG. 4 is performed. When the lost state storage flag is invalid (NO in step S53), the processing after step S21 shown in FIG. 3 is performed.

  FIG. 7 is a flowchart illustrating an example of a process for releasing the lock. When the lost state control unit 105 invalidates the lost state storage flag, the USB communication control unit 107 unlocks the communication of data transmitted from the I / O port 112 to the external device (step S61). The paper control unit 106 cancels the display of the electronic paper 111 (step S62).

  According to the present invention, when an information protection command is received from the mobile terminal control device 200 that controls the state of the mobile terminal 100, the mobile terminal 100 is locked and a maintenance SIM card is attached to the mobile terminal 100 In addition, the mobile terminal 100 is unlocked. Therefore, when the mobile phone is lost, the mobile phone can be made inoperable, and the inoperable state can be safely and easily released.

  Next, a modification of the portable terminal protection system according to the present invention will be described. In the above-described embodiment, the case where the keyboard control unit 120 instructs the timer control unit 117 to stop the warning state for a certain period of time when detecting that the key of the keyboard 121 is pressed has been described. In addition to these processes, when the keyboard control unit 120 detects that a key on the keyboard 121 has been pressed, the electronic paper control unit 106 displays information corresponding to the content of the pressed key in the electronic paper 111. May be displayed.

  For example, when the keyboard control unit 120 detects an operation to change the state of the portable terminal to the manner mode via the key of the keyboard 121 in an unlocked state, the electronic paper control unit 106 111 may be displayed to indicate that the manner mode is set.

  Moreover, in the said embodiment, when the keyboard control part 120 judged that the power key was pushed long, the case where the loss state control part 105 puts the portable terminal 100 in a power-off state was shown. In addition to these processes, when the keyboard control unit 120 determines that the power key has been pressed for a long time without being locked, information indicating that the electronic paper control unit 106 is in a communication disabled state is displayed. You may display on the electronic paper 111.

  By the operation as described above, the state of the mobile terminal 100 can be determined by appearance. Therefore, for example, in areas such as hospitals where communication is suppressed, it is displayed that the power is turned off (communication is disabled), or in the manner mode where voice output is suppressed Displaying something can give a sense of security to others.

  FIG. 8 is a block diagram showing an outline of the portable terminal protection system according to the present invention. The mobile terminal protection system according to the present invention includes a mobile terminal 80 (for example, the mobile terminal 100), a mobile terminal control apparatus 90 (for example, the mobile terminal control apparatus 200) that controls the state of the mobile terminal 80, and a mobile terminal 80 attached to and detached from. And a storage device 81 (for example, a SIM card 119) that stores information for canceling the inoperable state of the portable terminal 80.

  The mobile terminal control device 90 includes control information transmitting means 91 (for example, a communication message control unit) that transmits control information (for example, an information protection command) for instructing the mobile terminal 80 to shift to an inoperable state to the mobile terminal 80. 201), and when the mobile terminal 80 receives control information from the mobile terminal control device 90, the mobile terminal 80 makes the mobile terminal 80 inoperable (for example, locks) operation stop means 82 (for example, lost state control). Unit 105, electronic paper control unit 106), and operation release means 83 (for example, lost) that cancels the inoperable state of the mobile phone 80 (for example, releases the lock) when the mobile device 80 is mounted with the storage device 81. A state control unit 105).

  With such a configuration, when the mobile phone is lost, the mobile phone can be made inoperable and the inoperable state can be safely and easily released.

  In the above-described embodiment, the mobile terminal 80 includes a display unit (for example, electronic paper 111) that is provided on the outer surface of the mobile terminal 80 and can maintain a display state without depending on whether power is supplied. A configuration is disclosed in which the operation stop unit 82 (for example, the electronic paper control unit 106) displays information indicating that the operation is disabled when the operation stop unit 82 is in an operation disabled state on the display unit.

  With such a configuration, it is possible to determine from the appearance that the mobile terminal has been lost or stolen. Furthermore, since these displays can be maintained even when the power is turned off, the message can be displayed even when the power is turned off. Can be displayed. Therefore, it can be continuously displayed that the mobile terminal has been lost or stolen for a long time.

  In the above embodiment, the mobile terminal 80 outputs information indicating that the mobile terminal 80 is in an inoperable state when the mobile terminal 80 is in an inoperable state (for example, the LED control unit 108, the vibrator control unit 109, A configuration including an alarm control unit 110, an LED 113, a vibrator 114, and a speaker 115) is disclosed.

  With such a configuration, it is possible to determine that the mobile terminal has been lost or stolen from the appearance, and it has a suppressing effect that discourages crimes such as misuse of this mobile terminal. Therefore, it is possible to prevent malicious criminal acts (for example, reselling acts) and improve safety.

  In the above embodiment, when the mobile terminal 80 detects a control signal (for example, the keyboard control unit 120) that detects a control signal that controls the output of the output unit, and the control signal detection unit detects the control signal. Further, there is disclosed a configuration including an operation suppressing unit (for example, a timer control unit 117) that suppresses the output operation of the output unit for a certain period of time.

  With such a configuration, for example, even if a malicious user determines that the warning state can be temporarily canceled, the malicious user is given a change in the state that causes the warning state again after a certain period of time. become. As a result, a malicious user can be mentally affected and criminal acts can be prevented.

  In the embodiment, the mobile terminal 80 controls the external connection terminal (for example, the I / O port 112) through which data is transmitted / received to / from an external device and the data transmission performed through the external connection terminal. A configuration is disclosed that includes data transmission control means (for example, USB communication control unit 107), and the data transmission control means suppresses data transmission to an external device when the portable terminal 80 is in an inoperable state.

  In the above embodiment, the mobile terminal 80 is provided on the outer surface of the mobile terminal 80, and a display unit (for example, the electronic paper 111) capable of maintaining the display state without depending on the presence or absence of power supply; When the state change signal detecting means (for example, the keyboard control unit 120) for detecting the state change signal for changing the operation state of the mobile terminal and the state change signal detecting means detect the state change signal, the changed operation state ( For example, a configuration is disclosed that includes state changing means (for example, electronic paper control unit 106) that causes the display means to display power off, manner mode).

  With such a configuration, the state of the mobile terminal 100 can be determined by appearance. Therefore, for example, in areas such as hospitals where communication is suppressed, it is displayed that the power is turned off (communication is disabled), or in the manner mode where voice output is suppressed Displaying something can give a sense of security to others.

  The present invention is preferably applied to a portable terminal protection system that, when a portable terminal is lost or the like, places the portable terminal in an inoperable state and further releases the inoperable state.

It is a block diagram which shows one Embodiment of the portable terminal protection system by this invention. It is explanatory drawing which shows the example until an information protection command is transmitted. It is a flowchart which shows the example of a process until a loss state flag is validated. It is a flowchart which shows the example of a process when a loss state flag becomes effective. FIG. 11 is an explanatory diagram illustrating an example of display of the electronic paper 111. It is a flowchart which shows the example of the process which performs judgment which cancels | releases a lock | rock. It is a flowchart which shows the example of the process which cancels | releases a lock | rock. It is a block diagram which shows the outline | summary of the portable terminal protection system in this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Portable terminal 101 Reception control part 102 Communication analysis control part 103 Communication message analysis part 104 Authentication part 105 Loss state control part 106 Electronic paper control part 107 USB communication control part 108 LED control part 109 Vibrator control part 110 Alarm control part 111 Electronic paper 112 I / O port 113 LED
114 Vibrator 115 Speaker 116 Loss State Storage Unit 117 Timer Control Unit 118 SIM Card Read Control Unit 119 SIM Card 120 Keyboard Control Unit 121 Keyboard 122 System Activation Control Unit 200 Portable Terminal Control Device 300 Communication Network

Claims (12)

A mobile device,
A mobile terminal control device for controlling the state of the mobile terminal;
A storage device that is detachable from the portable terminal and stores information for releasing the inoperable state of the portable terminal;
The portable terminal control device
Control information transmitting means for transmitting control information for instructing the portable terminal to shift to the inoperable state to the portable terminal,
The portable terminal is
When the control information is received from the mobile terminal control device, operation stop means for making the mobile terminal inoperable;
The mobile terminal protection system, comprising: an operation release unit that releases the inoperable state of the mobile terminal when the mobile terminal is mounted with the storage device. Mobile devices
Provided on the outer surface of the mobile terminal, provided with a display means capable of maintaining the display state without depending on the presence or absence of power supply,
The portable terminal protection system according to claim 1, wherein the operation stopping unit displays information indicating that the operation is impossible when the operation is impossible. Mobile devices
The portable terminal protection system according to claim 1, further comprising an output unit that outputs information indicating that the portable terminal is in an inoperable state when the portable terminal is in an inoperable state. Mobile devices
Control signal detection means for detecting a control signal for controlling the output of the output means;
The portable terminal protection system according to claim 3, further comprising: an operation suppression unit that suppresses the output of the output unit for a certain period of time when the control signal detection unit detects a control signal. Mobile devices
An external connection terminal for transmitting / receiving data to / from an external device;
Data transmission control means for controlling transmission of data performed via the external connection terminal,
The portable terminal protection system according to any one of claims 1 to 4, wherein the data transmission control unit suppresses data transmission to an external device when the portable terminal is in an inoperable state. Mobile devices
Display means provided on the outer surface of the mobile terminal, capable of maintaining the display state without depending on the presence or absence of power supply,
State change signal detection means for detecting a state change signal for changing the operating state of the mobile terminal;
6. The apparatus according to claim 1, further comprising: a state change unit that causes the display unit to display the changed operation state when the state change signal detection unit detects the state change signal. Mobile device protection system. An operation stop means for making the portable terminal inoperable when receiving control information for instructing the portable terminal to shift to the inoperable state from the portable terminal control device that controls the state of the portable terminal;
Operation release means for releasing the inoperable state of the mobile terminal when a storage device that is detachable from the mobile terminal and stores information for releasing the inoperable state of the mobile terminal is mounted. A mobile terminal characterized by. Provided on the outer surface of the mobile terminal, comprising a display means capable of maintaining the display state without depending on the presence or absence of power supply,
The portable terminal according to claim 7, wherein the operation stopping unit outputs information indicating that the operation is not possible to the display unit when the operation is not possible. The mobile terminal control device that controls the state of the mobile terminal transmits control information to the mobile terminal to instruct the mobile terminal to shift to the inoperable state,
When the mobile terminal receives the control information, the mobile terminal is made inoperable,
The portable terminal releases the inoperable state when the portable terminal is mounted with a storage device that is detachable from the portable terminal and stores information for releasing the inoperable state of the portable terminal. Mobile terminal protection method. When the mobile terminal is in an inoperable state, information indicating that the mobile terminal is in an inoperable state is output to a display means provided on the outer surface of the mobile terminal and capable of maintaining the display state without depending on the presence or absence of power supply. The mobile terminal protection method according to claim 9. For computers used as mobile devices,
An operation stop process for making the computer inoperable when receiving control information for instructing the computer to shift to the inoperable state from the control device that controls the state of the computer; and
A portable terminal protection program for executing an operation release process for releasing the inoperable state when a storage device that is detachable from the computer and stores information for releasing the inoperable state of the computer is attached. . On the computer,
Information indicating that it is inoperable on a display means provided on the outer surface of the portable terminal realized by the computer and capable of maintaining the display state without depending on the presence or absence of power supply when inoperable. The portable terminal protection program according to claim 11.

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