JP2007300422A - Mobile communication terminal equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide mobile communication terminal equipment capable of protecting stored information when lost mobile communication terminal equipment is outside a service area and is in off-line mode. <P>SOLUTION: For an information protection part, an information protection mode is set ("setting when outside the service area is ON of a step S302) when the mobile communication terminal equipment is outside a service area, an internal storage part is locked when lock is set ("ON" of a step S304), not only the stored information is made inaccessible, but also an external storage medium is locked to make it impossible to access the stored information, and detachment is made impossible (a step S305). The same is performed when the mobile communication terminal equipment is off-line set. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mobile communication terminal device, and more particularly to protection of information stored in the device.

  Information such as an address book, a schedule, a memo pad, and an e-mail is stored in a storage device in the mobile communication terminal device and a removable external storage medium attached to the terminal device. If the device is lost, it is not desirable for such information to be viewed and modified by someone other than the authorized user. Therefore, personal authentication processing using a personal identification number (hereinafter referred to as a general-purpose personal identification number) is performed, and when the authentication is normally performed, the apparatus operates. That is, if the authentication is not performed, access to these pieces of information is performed. A process for making this impossible is known.

  There is also known a method for instructing a mobile communication terminal device lost from another communication device to erase stored information. However, if the lost mobile communication terminal apparatus is located outside the service area, that is, located in a place where wireless communication with the base station is not possible, the apparatus cannot receive the erasure instruction. When the device is in an offline mode, that is, set to a mode in which radio waves are not transmitted / received, the erasure instruction cannot be received as in the case where the device is located outside the service area.

Therefore, when the lost mobile communication terminal device is located outside the service area for a predetermined time, a process for setting the device to the lock mode and suppressing reading and writing of stored information is known (for example, Patent Document 1). reference.).
JP 2004-349902 A (2nd page, FIG. 4)

  However, in the method disclosed in Patent Document 1 described above, there is a problem that the stored information is not sufficiently protected when the lost mobile communication terminal device is located outside the service area and in the offline mode. . In other words, unlocking is attempted by a large number of predicted password information, and there is a possibility that the locking is released by an unauthorized user. In addition, when a removable external storage medium attached to the apparatus is removed by a person other than a legitimate user immediately after being lost, it is difficult to protect the information stored in the storage medium.

  The present invention has been made in order to solve the above-mentioned problems. A mobile communication terminal device capable of protecting stored information when a lost mobile communication terminal device is located outside the service area and in an offline mode. The purpose is to provide.

  In order to achieve the above object, a mobile communication terminal device of the present invention is a mobile communication terminal device from which an external storage medium can be removed, and a password information storage means for storing password information, and a predetermined time. If communication with the base station cannot be performed, access to the information stored in the external storage medium is prohibited, and then the password information different from the password information stored in the password information storage means is a predetermined value. And an information protection means for initializing the external storage medium when it is input over the number of times.

  The mobile communication terminal apparatus of the present invention is a mobile communication terminal apparatus from which an external storage medium can be removed, and communication between the internal storage means and the base station cannot be performed for a predetermined time. And an information protection unit that moves information stored in the external storage medium to the internal storage unit and prohibits access to the information stored in the internal storage unit.

  The mobile communication terminal apparatus of the present invention is a mobile communication terminal apparatus from which an external storage medium can be removed, and communication between the internal storage means and the base station cannot be performed for a predetermined time. And information protection means for converting the information stored in the external storage medium into encrypted information and storing the encrypted information in the external storage medium or the internal storage means. To do.

  According to the present invention, it is possible to provide a mobile communication terminal device capable of protecting stored information when the lost mobile communication terminal device is located outside the service area and in the offline mode.

  Hereinafter, an embodiment of a mobile communication terminal device according to the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a mobile communication terminal apparatus MS according to an embodiment of the present invention. This mobile communication terminal device MS includes a control unit 11 that controls the entire device, an antenna 12a that transmits and receives radio waves to and from a base station (not shown), a communication unit 12b, a transmission and reception unit 13, and a telephone call. Speaker 14a, call microphone 14b, call unit 14c, display unit 15, input device 16, information protection unit 17, information protection parameter storage unit 18, address book management unit 19, internal The storage unit 20 includes a connection unit 21 that connects the removable external storage medium 31.

  The information protection parameter storage unit 18 stores information protection parameters 18a. The internal storage unit 20 stores an internal address book 20a. The external storage medium 31 is an SD card, for example, and the external storage medium 31 stores an external address book 31a.

  The operation of each part of the mobile communication terminal device MS according to the embodiment of the present invention configured as described above will be described with reference to FIG.

  When the mobile communication terminal device MS is in a standby state, the control unit 11 wakes up intermittently, controls the transmission / reception unit 13 and the communication unit 12b, and communicates with the base station. This communication may only be received for the purpose of measuring the received radio wave quality and determining the presence or absence of an incoming signal. In addition, when the base station most suitable for communication is selected as a standby base station, transmission / reception may be performed. Sometimes. If it is determined that the radio wave transmitted from any base station has poor reception quality and is not suitable for communication, the mobile communication terminal device MS determines that it is located outside the service area and Control not to perform call communication.

  In addition, when the offline mode is set by a predetermined key operation of the input device 16, the control unit 11 does not transmit / receive radio waves via the antenna 12a. That is, the transmission / reception unit 13 and the communication unit 12b are controlled to prevent communication with the base station. Also, do not wake up intermittently.

  Further, the control unit 11 sets the mobile communication terminal device MS to the operation restriction mode by a predetermined key operation of the input device 16. In the operation restriction mode, the operation of each part of the mobile communication terminal device MS is restricted. For example, the internal address book 20a stored in the internal storage unit 20 and the external address book 31a stored in the external storage medium 31 are used. Control to prohibit access to. The control unit 11 cancels the setting of the operation restriction mode when a predetermined general-purpose code number is input by a key operation of the input device 16.

  The communication unit 12b outputs the high-frequency signal received by the antenna 12a to the transmission / reception unit 13, and transmits the high-frequency signal output from the transmission / reception unit 13 from the antenna 12a.

  The transmission / reception unit 13 amplifies, frequency-converts and demodulates the high-frequency signal from the communication unit 12b, and sends a digital voice signal obtained thereby to the call unit 14c and a control signal including an incoming signal to the control unit 11. Further, the digital audio signal output from the communication unit 14c and the control signal including the incoming call signal and the outgoing call signal output from the control unit 11 are modulated, frequency-converted and amplified to obtain a high-frequency signal. The data is sent to the communication unit 12b.

  The call unit 14c converts the digital audio signal output from the transmission / reception unit 13 into an analog audio signal, amplifies it, and sends it to the speaker 14a. The analog audio signal output from the microphone 14 b is amplified, converted into a digital audio signal, and transmitted to the transmission / reception unit 13.

  The display unit 15 is controlled by the control unit 11 to display characters / numbers and image data including a cursor, and the displayed data responds to an input operation or an incoming signal from the input device 16. In response to an instruction from the control unit 11, switching is performed.

  The input device 16 designates a telephone number of a communication partner, and a plurality of keys including a numeric key for inputting hiragana characters, alphabetic characters and symbol characters by a toggle type input method, a cursor movement key, and a scroll key. It consists of keys including function keys. When a key of the input device 16 is pressed, the identifier of the key is notified to the control unit 11 and displayed as a character on the display unit 15 by the control unit 11 and notified to each unit or controlled. .

  The information protection unit 17 stores the information protection parameter 18 a in the information protection parameter storage unit 18 in accordance with a predetermined key operation of the input device 16. In addition, when the mobile communication terminal device MS is located outside the service area for a predetermined time, the information stored in the internal storage unit 20 and the external information are started by the control unit 11 and stored according to the stored information protection parameter 18a. The information stored in the storage medium 31 is protected. That is, processing such as setting such that access to the information is impossible is performed. In addition, the setting that is not accessible by the predetermined key operation of the input device 16 is changed to the setting that can be accessed.

  The address book management unit 19 is activated by the control unit 11 in accordance with a predetermined key operation of the input device 16, and includes an internal address book 20a stored in the internal storage unit 20, and an external address book 31a stored in the external storage medium 31. Manage. Here, the internal address book 20a and the external address book 31a include information in which names, telephone numbers, e-mail addresses, and addresses are associated with each other, but are not limited thereto. Information other than the above may be included.

  That is, when a predetermined key of the input device 16 is operated, the address book management unit 19 searches the associated information stored in the internal address book 20a and the external address book 31a and displays it on the display unit 15. Display, modify the displayed information, or delete the information. Further, when a predetermined key of the input device 16 is operated, the address book management unit 19 additionally stores new associated information in the internal address book 20a or the external address book 31a. Further, when a predetermined key of the input device 16 is operated, the address book management unit 19 transmits the telephone number of the retrieved information to the control unit 11 and makes a call to that number.

  The connection unit 21 connects electrical signals between each unit of the mobile communication terminal device MS and the external storage medium 31. Moreover, although it consists of a slide-type door which closes an insertion port after the external storage medium 31 is inserted, it is not restricted to this. A rotating door may be used. Then, the external storage medium 31 is removed from the control unit 11 in response to an instruction to allow the external storage medium 31 to be removed and a predetermined operation by the user. For example, the connection unit 21 can slide or rotate the door by receiving an instruction to allow removal, and when the instruction is not received, and in a state where the mobile communication terminal MS is powered off, For example, the sliding force of the door or the rotation of the door is made impossible by the elastic force of the spring.

  Hereinafter, operations related to information protection of the mobile communication terminal device MS according to the present embodiment will be described.

  FIG. 2 shows an example of the information protection parameter 18 a stored in the information protection parameter storage unit 18. The information protection parameter 18a includes an information protection mode type 18b, an information protection setting 18c, a lock setting 18d, a lock password number 18e, an unlock password number 18f, a grace period 18g, an initialization setting 18h, an initial setting It consists of three sets of information in which a password 18i, a password number error count 18j, and an external storage medium initialization 18k are associated.

  The information protection mode type 18b has one of the values “search”, “out of service area”, and “offline”, and a set of information having each value is searched by the mobile communication terminal device MS. Information protection setting when the mobile communication terminal apparatus MS is out of service area, information protection setting when the mobile communication terminal apparatus MS is set offline, Are the parameters respectively indicating

  The information protection setting 18c has a value of “on” or “off”. If it is “on”, the information protection is set. If it is “off”, the information protection is not set and the information is a set of information having the value, excluding the information protection mode type 18b and the information protection setting 18c. Indicates that the information has no meaning. The information protection parameter 18a illustrated in FIG. 2 shows an example in which the information protection setting 18c is “ON” in all three sets of information, and the above three settings are performed.

  As will be described in detail later, the lock setting 18d locks information stored in the internal storage unit 20 and information stored in the external storage medium 31 in a predetermined case, that is, without reading and writing such information. In addition, it indicates whether or not to perform an operation that prevents the external storage medium 31 from being removed. If the lock setting 18d is “on”, the operation is performed. If the lock setting 18d is “off”, the operation is not performed. Indicates.

  The lock personal identification number 18e is meaningful when the information protection mode type 18b is “search” and the lock setting 18d is “on”. When the received lock instruction is received and the received code number is equal to the lock code number 18e corresponding to the information whose information protection mode type 18b is “search”, the operation of locking the above information is performed. Show. The lock personal identification number 18e has no meaning when the information protection mode type 18b is “out of range” or “offline”. In the information protection parameter 18 a shown in FIG. 2, “−” character indicates that there is no meaning.

  The unlock code number 18f is meaningful when the information protection mode type 18b is “out of range” or “offline” and the lock setting 18d is “on”, and the mobile communication terminal device MS is located outside the range. Or when the information is locked while being set to offline, it indicates that the lock is released when the unlock code PIN 18f is input from the input device 16.

  The grace time 18g is meaningful when the information protection mode type 18b is “out of range” or “offline” and the lock setting 18d is “on”, and after the mobile communication terminal device MS is located outside the range. Or when the grace time 18g has elapsed since the setting was set to offline, the information stored in the internal storage unit 20 and the information stored in the external storage medium 31 are locked.

  As will be described later in detail, the initialization setting 18h indicates whether to initialize the internal storage unit 20 in a predetermined case, that is, whether or not to perform an operation of deleting information stored in the internal storage unit 20. If the conversion setting 18h is “on”, the operation is performed, and if it is “off”, the operation is not performed.

  The initialization password 18i is meaningful when the information protection mode type 18b is “search” and the initialization setting 18h is “on”, and is used when the mobile communication terminal device MS is located within the service area. When the initialization instruction accompanied with is received and the received password is equal to the initialization password 18i included in the information protection parameter 18a, it indicates that the internal storage unit 20 is initialized.

  The code number error count 18j is meaningful when the information protection mode type 18b is “out of range” or “offline” and the initialization setting 18h is “on”, and the mobile communication terminal device MS is located outside the range. When an incorrect unlock code number, that is, an unlock code number different from the unlock code number 18f, is continuously input over the number of code code errors 18j after being set to offline or It indicates that the internal storage unit 20 is to be initialized.

  The external storage medium initialization 18k is meaningful when the initialization setting 18h is “ON”. When the internal storage unit 20 is initialized, whether or not to initialize the external storage medium 31 is determined. If the external storage medium initialization 18k is “on”, the initialization is performed, and if it is “off”, the initialization is not performed.

  As described above, the information protection parameter 18a stores different information depending on whether the information protection mode type 18b is “out of service area” or “offline”. The point that the mobile communication terminal device MS cannot communicate with the base station is the same when the mobile communication terminal device MS is located outside the service area and when it is set offline. However, by storing different information, it is possible to protect the information appropriately depending on how the user uses it.

  For example, a user who is not set to offline, when set to offline, locks information in a very short time, and memorizes parameters that are initialized by inputting a wrong unlock PIN for a few times. be able to. As a result, it is possible to avoid information protection when an unauthorized user sets offline, the mobile communication terminal device MS is within the service area, and receives a search instruction, thereby preventing information browsing attempts.

  In addition, a user who carries the mobile communication terminal device MS and does not move out of the service area, or a user who has a habit of turning off the power of the mobile communication terminal device MS when located outside the service area, is located outside the service area, It is possible to store parameters to be locked in a very short time and to be initialized by inputting a wrong unlock code for a few times. Thereby, when an unauthorized user carries the mobile communication terminal device MS, it is possible to protect information by using the fact that the user has moved out of service by chance.

  FIG. 3 shows a flowchart of the operation of setting the information protection mode of the information protection unit 17, that is, the operation of inputting how to protect the information from the input device 16 and storing it in the information protection parameter 18a. When the mobile communication terminal device MS is powered on (step S101), the device is put into a standby state (step S102). In the standby state, an operation for setting the information protection mode of the information protection unit 17 is activated by a predetermined key operation of the input device 16 (step S103).

  The information protection unit 17 determines whether or not to set the information protection mode by a predetermined key operation of the input device 16 (step S104). When it is determined that the information protection mode is not set, the information protection unit 17 ends the operation and performs mobile communication in step S102. The operation proceeds to the operation of putting the terminal device MS in a standby state. If it is determined that the search mode is set, it is determined whether or not the search mode is set (step S105). If it is determined that the search mode is set, the setting, that is, the information set whose information protection mode type 18b is “search” is protected. The parameter 18a is stored (step S106). The information to be stored includes at least “ON” in the information protection setting 18c, and also includes an initialization setting 18h and an external storage medium initialization 18k.

  When it is determined not to set in step S105 and when the operation of step S106 is completed, the information protection unit 17 determines whether or not to set out-of-service by setting a predetermined key of the input device 16 ( In step S107), when it is determined to set, the setting, that is, the information set whose information protection mode type 18b is “out of range” is stored in the information protection parameter 18a (step S108). The information to be stored includes at least “on” in the information protection setting 18c, and also includes a grace period 18g, an initialization setting 18h, a code number error count 18j, and an external storage medium initialization 18k.

  When it is determined not to set in step S107, and when the operation of step S108 is completed, the information protection unit 17 determines whether or not to perform offline setting by a predetermined key operation of the input device 16 ( In step S109), when it is determined to set, the setting, that is, the information set whose information protection mode type 18b is “offline” is stored in the information protection parameter 18a (step S110). The information to be stored includes at least “on” in the information protection setting 18c, and also includes a grace period 18g, an initialization setting 18h, a code number error count 18j, and an external storage medium initialization 18k.

  When it is determined not to set in step S109, and when the operation of step S110 ends, the information protection unit 17 ends the operation of setting the information protection mode, and puts the mobile communication terminal device MS of step S102 in a standby state. The operation is moved to (step S111).

  The operation of setting the information protection mode of the information protection unit 17 will be described in detail with reference to FIGS. 4 to 14 including information displayed on the display unit 15 by the information protection unit 17.

  FIG. 4 shows the display of the display unit 15 when the information protection unit 17 is activated and the information protection mode type 18b is determined as to which information is stored in the information protection parameter 18a. That is, FIG. 4A shows a state in which the standby screen 15a is displayed in the standby state in step S102.

  FIG. 4B shows the display of the display unit 15 for determining whether or not to set the information protection mode in step S104. The execution function display column 15b at the top of the display unit 15 displays “Information protection mode”. The text “Setting” is displayed. An information protection setting on / off selection button 15c composed of two buttons "ON" and "OFF" is displayed at the substantially central portion of the display unit 15, and "ON" indicates that "ON" is selected. Is shown by being surrounded by a rectangle. When a predetermined key of the input device 16 is operated while “ON” is selected, the information protection unit 17 determines that the setting is made in step S104. On the other hand, if a predetermined key of the input device 16 is operated while “OFF” is selected, it is determined that the setting is not performed.

  In FIG. 4C, a predetermined key of the input device 16 is operated in a state where “ON” is selected as a rectangle in FIG. 4B, that is, set by the information protection unit 17 in step S104. The display on the display unit 15 when the determination is made is shown. That is, in the execution function display field 15b, the characters “information protection mode setting” are continuously displayed, and “search mode setting”, “out-of-service setting”, and “off-line setting” are displayed in the approximate center of the display unit 15. The information protection setting type selection button 15d consisting of these three buttons is displayed, and the fact that “search mode setting” is selected is indicated by the fact that “search mode setting” is surrounded by a rectangle.

  When a predetermined key of the input device 16 is operated in a state where “search mode setting” is selected, the information protection unit 17 determines that the setting is made in step S105. When a predetermined key of the input device 16 is operated in a state where “out of service setting” is selected, it is determined in step S107 that the setting is to be made. If a predetermined key of the input device 16 is operated while “offline setting” is selected, it is determined in step S109 that the setting is to be made.

  5 and 6 show information displayed on the display unit 15 during the search mode setting operation, that is, the operation related to the setting of the lock setting 18d in the operation of step S106.

  FIG. 5A shows that the search mode setting operation, that is, the operation of step S106 is started, the characters “information protection mode setting” are continuously displayed in the execution function display field 15b. In the approximate center, the characters “What is the search mode setting password?” And the secret code entered after being guided by this character have been changed to a different character from the entered character. A search mode password input screen 15e consisting of the characters “***” is displayed. It is assumed that the input personal identification number is “1234”.

  The input password is stored in the information protection parameter 18a by the information protection unit 17 as the lock password 18e corresponding to the information whose information protection mode type 18b is “search”.

  FIG. 5B is a search mode setting screen for confirming that the search mode setting operation is started. In the execution function display field 15b, characters “information protection mode setting” are continuously displayed and displayed. In the approximate center of the section 15, a search mode setting ON / OFF selection button 15f consisting of the characters "search mode setting" and two buttons "ON" and "OFF" is displayed, and "ON" is selected. This is indicated by the fact that “ON” is surrounded by a rectangle. When a predetermined key of the input device 16 is operated while “ON” is selected, the information protection unit 17 uses the information stored in the information protection parameter 18a and the information protection mode type 18b is “search”. “On” is stored in the information protection setting 18c of the set, and the search mode setting operation is continued.

  On the other hand, when a predetermined key of the input device 16 is operated in a state where “OFF” is selected, the information protection unit 17 uses the information stored in the information protection parameter 18a and the information protection mode type 18b is “search”. “OFF” is stored in the information protection setting 18c of the set, and the process proceeds to the display of the information protection setting type selection button 15d shown in FIG.

  FIG. 5C shows the display of the display unit 15 when the search mode setting operation is continuously performed. In the execution function display field 15b, the characters “search mode setting” are displayed. In the center portion, a search mode setting selection button 15g consisting of two buttons of “lock setting” and “initialization setting” is displayed, and “lock setting” is a rectangle indicating that “lock setting” is selected. Indicated by being surrounded. When a predetermined key of the input device 16 is operated in a state where “lock setting” is selected, the information protection unit 17 uses the information stored in the information protection parameter 18a and the information protection mode type 18b is “search”. “ON” is stored in a certain set of lock settings 18d.

  FIG. 6 is a display of the display unit 15 when the operation of “lock setting” is continued. In the execution function display field 15b, characters “search mode” are continuously displayed, A search mode lock confirmation display 15h including characters “[password]”, “[contact address]”, and ““ standby message ”” is displayed. As described above, “[password]” is the character stored in the information protection parameter 18a as the lock personal identification number 18e, and “[contact]” and “standby message” are locked. At this time, it is a character indicating a message displayed on the standby screen and is displayed for confirmation.

  “Contact” and “Standby message” are input using a screen (not shown) of the display unit 15 similar to the search mode PIN input screen 15e shown in FIG. Further, it is stored in the information protection parameter 18a (not shown).

  7 and 8 show search mode setting operations, that is, operations related to initialization, that is, operations related to initialization settings 18h, initialization password 18i, and external storage medium initialization 18k. The information displayed on the display part 15 in the case of is shown.

  When “initialization setting” is selected by the search mode setting selection button 15g shown in FIG. 5C, the information protection unit 17 uses the information stored in the information protection parameter 18a and the information protection mode type 18b is “search”. “ON” is stored in the initialization setting 18h of the set. FIG. 7 shows the display on the display unit 15 at that time. That is, in the execution function display field 15b, the characters “search mode” are displayed, and in the approximate center of the display portion 15, the characters “initialization setting [password]” and the characters are prompted and input. A search mode initialization password input screen 15i including the password “ABCDEFG” is displayed.

  FIG. 8A shows information displayed on the display unit 15 after completion of the password input. The execution function display field 15b continuously displays the characters “search mode” and is displayed at the approximate center of the display unit 15. In this section, a search mode initialization password confirmation display 15j is displayed, which includes a button with characters “initialization setting [ABCDEDG]” and characters “confirmation” displayed. Here, when the button on which the character “Confirm” is displayed is selected by a predetermined key operation of the input device 16, the information protection unit 17 uses the input and displayed password as the information protection parameter 18a. Stored in the initialization password 18i corresponding to the information whose information protection mode type 18b is “search”.

  FIG. 8B and FIG. 8C show information displayed on the display unit 15 for making settings relating to initialization of information stored in the external storage medium 31. That is, in FIG. 8B, the “Search mode” character is continuously displayed in the execution function display field 15b, and the character “Do you want to initialize the SD card?” Is displayed in the approximate center of the display unit 15. Then, a search mode external storage medium initialization setting on / off selection button 15k including two buttons “ON” and “NO” is displayed. Here, a “Yes” button is surrounded by a rectangle to indicate that the button is selected.

  When a predetermined key of the input device 16 is operated while the “Yes” button is selected, the information protection unit 17 uses the information stored in the information protection parameter 18 a to set the information protection mode type 18 b to “Search”. "ON" is stored in the external storage medium initialization 18k corresponding to "". Then, as shown in FIG. 8C, the “search mode” character is continuously displayed in the execution function display field 15 b of the display unit 15, and “initialization setting” is displayed in the approximate center of the display unit 15. The search mode external storage medium initialization confirmation display 15m is displayed, which consists of the following characters and the characters “Set * SD will also be initialized”.

  On the other hand, when a predetermined key of the input device 16 is operated while the “No” button is selected, the information protection unit 17 uses the information stored in the information protection parameter 18a to set the information protection mode type 18b. “OFF” is stored in the external storage medium initialization 18k corresponding to “search”.

  By the operation of the information protection unit 17 described above, the information protection parameter 18a illustrated in FIG. 2 and the information protection mode type 18b corresponding to “search” have information protection setting 18c “on” and “on”. The lock setting 18d, the lock code number 18e “1234”, the initialization setting 18h “on”, the initialization password 18i “ABCDEFG”, and the external storage medium initialization 18k “on” are stored. Note that the unlock code number 18f, the grace period 18g, and the code number error count 18j corresponding to the information search mode type 18b corresponding to “search” have no meaning as described above.

  9 to 11 show information displayed on the display unit 15 during the operation related to the setting related to the lock and the setting related to the initialization in the operation of the out-of-service setting of the information protection unit 17, that is, the operation of Step S108. Show.

  FIG. 9 shows a display on the display unit 15 when the information protection unit 17 starts the operation for setting when out of service area. FIG. 9A shows an information protection mode setting screen (No. 3). In step S104, the information protection unit 17 determines that the information protection mode is set. A display in which “out of service setting” is selected from the protection setting type selection button 15d is shown. The display shown in FIG. 9A is the same as the display in which “search mode setting” shown in FIG. 4C is selected, and only the selected button surrounded by a rectangle is different.

  Next, FIG. 9B is an unlock code entry screen when out of service area, and the execution function display field 15b continues to display the characters “information protection mode setting” and “ Unlocked password input when out-of-service consisting of a character string “?” And a character string “***” that is replaced with a different character in order to keep secret A screen 15n is displayed in a substantially central portion. It is assumed that the input personal identification number is “1234”. The information protection unit 17 stores the password entered here in the unlock code PIN 18f corresponding to the information protection mode type 18b “out of service area”.

  FIG. 9C is an out-of-range setting screen (part 1), and shows the contents displayed on the display unit 15 to determine whether or not to set the out-of-range setting in step S107. The character string “out-of-range setting” at the top of the section 15 and the out-of-range setting on / off selection button 15o consisting of two buttons “ON” and “OFF” in the approximate center are displayed, and “ON” is selected. That “ON” is surrounded by a rectangle. When a predetermined key of the input device 16 is operated while “ON” is selected, the information protection unit 17 determines that the setting is made in step S107. In addition, the information protection unit 17 stores “ON” in the information protection setting 18 c corresponding to the information protection mode type 18 b “out of service area”.

  On the other hand, when a predetermined key of the input device 16 is operated while “OFF” is selected, the information protection unit 17 sets “OFF” in the information protection setting 18c corresponding to the information protection mode type 18b “out of service area”. ”Is stored, and the display shifts to the display of the information protection setting type selection button 15d shown in FIG.

  FIG. 10 shows the content displayed on the display unit 15 when performing lock setting in the out-of-service setting. FIG. 10A shows an out-of-service setting screen (No. 2). The display unit 15 when a predetermined key of the input device 16 is operated in a state where “ON” is selected in FIG. 9C. Shows the display. That is, the execution function display field 15b displays the characters “out-of-service time setting”, and an out-of-service time setting selection button 15p including two buttons, “lock setting” and “initialization setting”, is displayed in the approximate center. It is displayed. Then, the fact that “lock setting” is selected is indicated by the fact that “lock setting” is surrounded by a rectangle.

  When a predetermined key of the input device 16 is operated in a state where “lock setting” is selected, the information protection unit 17 sets “on” to the lock setting 18d corresponding to the information protection mode type 18b “out of range”. Remember.

  FIG. 10B is a lock grace time input screen when out of service area, and shows the contents displayed on the display unit 15 after “lock setting” is selected. In the execution function display field 15b, a character “Lock out of range” is displayed, and in the approximate center, a character “How many minutes do you want to lock? (5 to 60 minutes)” and this character are guided. The out-of-service lock grace time input screen 15q composed of the characters “10 minutes” input in the above manner is displayed. And the information protection part 17 memorize | stores this input lock grace time in out-of-service time in the grace time 18g corresponding to the information protection mode classification 18b being "out of service area".

  FIG. 10C shows an out-of-service area lock setting confirmation display, showing the display of the display unit 15 indicating that the grace time 18g is stored, and the execution function display field 15b continues to be “out-of-service area lock setting”. Characters are displayed, and an out-of-service lock confirmation display 15r made up of characters “set for 10 minutes” is displayed in the approximate center.

  FIG. 11 shows the contents displayed on the display unit 15 at the initialization setting when out of service area. FIG. 11A shows an out-of-service area initialization setting screen (part 1), and the input device in a state where “initialization setting” is selected on the out-of-service area setting screen (part 2) shown in FIG. It is displayed when 16 predetermined keys are operated.

  This indication is displayed in the execution function display field 15b as “out-of-service initialization setting”, and in the approximate center of the display section 15 “How many times the PIN number is failed? (3 to 20 times)”. And an out-of-service code number retry count input screen 15 s composed of the characters “10 times” and the characters guided by this character. Then, the information protection unit 17 stores “10 times” which is the out-of-service code number retry count at the time of out-of-service input, in the code error number 18 j corresponding to the information protection mode type 18 b “out-of-service”. “On” is stored in the initialization setting 18 h corresponding to the protection mode type 18 b of “out of service area”.

  FIG. 11B shows an out-of-service area initialization setting screen (part 2) that is subsequently displayed. In the execution function display field 15b, the characters “out-of-service area initialization setting” and the approximate center of the display unit 15 are displayed. In the area, an out-of-service area external storage medium initialization selection button 15t is displayed, which is composed of a character “Do you want to initialize the SD card?” And two buttons “Yes” and “No”. The fact that “Yes” is selected is indicated by surrounding “Yes” with a rectangle.

  When a predetermined key of the input device 16 is operated in a state where “Yes” is selected, the information protection unit 17 sets the external storage medium initialization 18k corresponding to the information protection mode type 18b “out of service” to “ "On" is memorized. On the other hand, when a predetermined key of the input device 16 is operated in a state where “NO” is selected, “OFF” is stored in the external storage medium initialization 18k corresponding to the information protection mode type 18b “out of range”. To do.

  FIG. 11C shows an out-of-range initialization setting confirmation display. In the execution function display field 15b, the characters “out-of-range initialization setting” continue and “10 times” is set in the approximate center of the display unit 15. The out-of-service initialization confirmation display 15u consisting of the characters “* SD card will be initialized” is displayed. The out-of-service area initialization confirmation display 15u displays the information input via the out-of-service code number retry count input screen 15s shown in FIG. 11 (a) and the out-of-service area external storage medium initialization shown in FIG. 11 (b). It is created from information input via the selection button 15t.

  With the operation of the information protection unit 17 described above, the information protection parameter 18a illustrated in FIG. 2 and the information protection mode type 18b corresponding to “out of service area” are set to “ON”, the information protection setting 18c is set to “ON”. Lock setting 18d, unlocking code number "1234" unlocked code number 18f, "10 minutes" grace time 18g, "on" initialization setting 18h, "10 times" code number error count 18j, and "on" external memory The medium initialization 18k is stored. As already described, the lock personal identification number 18e and the initialization password 18i corresponding to the information protection mode type 18b of “out of service area” have no meaning.

  FIGS. 12 to 14 show the setting of the information protection unit 17 when it is offline, that is, the setting related to initialization and the setting related to initialization, that is, the information protection setting 18c, the lock setting 18d, and the unlocking. The information displayed on the display unit 15 in the operation related to the setting of the personal identification number 18f, the grace period 18g, the initialization setting 18h, the personal identification number error count 18j, and the external storage medium initialization 18k is shown.

  The offline setting operation of the information protection unit 17 and the information displayed on the display unit 15 during the operation are the out-of-service setting operation of the information protection unit 17 described with reference to FIGS. The information is similar to the information displayed on the display unit 15 during the operation, and detailed description will be omitted, and differences will be described.

  The first difference is that the information protection unit 17 is offline by selecting “offline setting” from the information protection setting type selection button 15d on the information protection mode setting screen (No. 3) shown in FIG. The time setting operation is started. FIG. 12A shows that “offline setting” is selected by enclosing “offline setting” with a rectangle.

  The second difference is that the characters “out of range” in all displays are replaced with “offline”. The third difference is related to the storage of information in the information protection parameter 18a of the information protection unit 17, and in the operation for setting out of service area, information corresponding to the information protection mode type 18b of “out of service” is stored. On the other hand, in the offline setting operation, the information protection mode type 18b stores information corresponding to “offline”.

  Note that the offline initialization setting screen (part 2) shown in FIG. 14B is different from the out-of-service initialization setting screen (part 2) shown in FIG. The case where “not” is selected at 15t2 is illustrated. Accordingly, in the off-line initialization confirmation display 15u2 shown in FIG. 14C, the characters “Set 10 times” are displayed.

  Correspondingly, in the information protection parameter 18a illustrated in FIG. 2, the information corresponding to the information protection mode type 18b corresponding to “offline” is compared with the information corresponding to the information protection mode type 18b corresponding to “out of service area”. Then, the information storage mode type 18b is different from the information corresponding to “offline” in that the external storage medium initialization 18k stores information “off”, and other information is the same. is there.

  FIG. 15 is a flowchart of the information protection operation by the search of the information protection unit 17 when the mobile communication terminal device MS is located in the area and receives the search instruction, that is, the information lock and initialization operations. Show.

  The information protection part 17 is started by the control part 11 which received the search instruction | indication signal, and starts operation | movement (step S201). At this time, the lock personal identification number received along with the search instruction signal and the initialization password are notified from the control unit 11 to the information protection unit 17. The signal for instructing the protection of the information, the lock password, and the initialization password are obtained directly from an arbitrary communication terminal device or after authentication of the user of the communication terminal device by the communication carrier device. Above, it is transmitted to the mobile communication terminal device MS.

  Here, the mobile communication terminal device MS is specified by its identification information, for example, its telephone number or its e-mail address. This transmission is, for example, transmitted as a control signal, but is not limited thereto. The mobile communication terminal device MS has an e-mail transmission / reception unit (not shown), and the transmission may be sent by e-mail.

  The information protection unit 17 searches the information protection parameter 18a for information whose information protection mode type 18b is equal to “search”, and determines whether or not to perform the information protection operation based on the information protection setting 18c corresponding to the searched information. (Step S202). That is, if the information protection setting 18c is “OFF”, the information protection unit 17 ends the information protection operation (step S203).

  On the other hand, if the information protection setting 18c is “ON”, the information protection unit 17 determines whether or not to perform lock setting by the lock setting 18d corresponding to the information searched in step S202 (step S204). That is, if the lock setting 18d is “ON”, the lock personal identification number notified from the control unit 11 in step S201 is compared with the lock personal identification number 18e corresponding to the information retrieved in step S202 (step S205). ).

  If they are equal as a result of the comparison, the information protection unit 17 locks the internal storage unit 20 and the external storage medium 31 (step S206). That is, the control unit 11 is instructed not to execute the read and write requests for the internal address book 20a stored in the internal storage unit 20 and the external address book 31a stored in the external storage medium 31. Further, the connection unit 21 is instructed to set the external storage medium 31 that cannot be removed from the mobile communication terminal device MS.

  When the lock is completed, when the two compared in step S205 are different, and when the lock setting 18d is “off” in step S204, the information protection unit 17 corresponds to the information searched in step S202. It is determined whether or not the initialization setting is performed based on the initialization setting 18h (step S207). If the initialization setting 18h is “OFF”, the information protection unit 17 ends the information protection operation (step S203).

  On the other hand, if the initialization setting 18h is “ON”, the information protection unit 17 initializes the initialization password notified from the control unit 11 in step S201 and the initialization password 18i corresponding to the information searched in step S202. Are compared (step S208). If they are different as a result of the comparison, the information protection unit 17 ends the information protection operation (step S203). On the other hand, if the two are equal, the information protection unit 17 initializes the internal storage unit 20 (step S209). That is, all information in the internal address book 20a stored in the internal storage unit 20 is deleted.

  Then, it is checked whether or not to initialize the external storage medium 31 by the external storage medium initialization 18k corresponding to the information searched in step S202 (step S210). If the external storage medium initialization 18k is “off”, the information protection unit 17 ends the information protection operation (step S203). On the other hand, if the external storage medium initialization 18k is “ON”, the information protection unit 17 initializes the external storage medium 31 (step S211). That is, all information in the external address book 31a stored in the external storage medium 31 is erased, and the information protection operation is terminated (step S203).

  FIG. 16 shows a flowchart of the information protection operation of the information protection unit 17, that is, the information lock operation, when the mobile communication terminal device MS is continuously located outside the service area for a predetermined time. The control unit 11 measures the time when the mobile communication terminal device MS is continuously located outside the service area. The information protection unit 17 determines that the mobile communication terminal device MS is out of the service area for the grace period of 18g or longer, and the information protection mode type 18b corresponding to the grace time 18g is “out of service”. 11 to start the operation (step S301).

  Then, information with the information protection mode type 18b “out of service area” is searched from the information protection parameter 18a, and it is determined whether or not the information protection operation is performed based on the information protection setting 18c corresponding to the information (step S302). . That is, if the information protection setting 18c is “OFF”, the information protection unit 17 ends the information protection operation (step S303).

  On the other hand, if the information protection setting 18c is “ON”, the information protection unit 17 determines whether or not to perform lock setting by the lock setting 18d corresponding to the information searched in step S302 (step S304). If the lock setting 18d is “off”, the information protection operation is terminated (step S303).

  On the other hand, if the lock setting 18d is “ON”, the information protection unit 17 locks the internal storage unit 20 and the external storage medium 31 (step S305), and ends the information protection operation (step S303). The locking operation in step S305 is the same as the locking operation in step S206 of the information protection operation by the search of the information protection unit 17 described with reference to FIG. 15, and detailed description thereof is omitted.

  In step S301, the information protection unit 17 determines that the mobile communication terminal device MS is out of the service area for the delay time of 18g or longer, and the information protection mode type 18b corresponding to the delay time 18g is “out of service”. It is assumed that the control unit 11 is activated, and the determination that it is located outside the service area for the grace period of 18 g or more is continuously located outside the service area for the grace time of 18 g or more, but is not limited thereto. For example, it is possible to include a case where a time period outside the service area is 18g or more with a short time period located within the service area.

  In FIG. 17, the mobile communication terminal device MS is located outside the service area, and as described with reference to FIG. 16, the information is locked, and an incorrect number is continuously input a predetermined number of times as the unlock code. 5 shows a flowchart of the information protection operation of the information protection unit 17, that is, the information initialization operation.

  The control unit 11 detects that the mobile communication terminal device MS is located outside the service area. If the information is locked, the control unit 11 inputs the unlock code from the input device 16 and the information protection mode type 18b is “out of service”. Some information is retrieved from the information protection parameter 18a. Then, it is detected whether or not an unlock code number different from the unlock code number 18f corresponding to the searched information has been continuously input over the number of password numbers 18j corresponding to the searched information.

  When the mobile communication terminal device MS is located outside the service area and the unlock code number different from the unlock code number 18f is continuously input over the above-described code number error count 18j, the information protection unit 17 performs control. The operation is started by the unit 11, and the operation is started (step S401).

  The information protection unit 17 searches the information protection parameter 18a for information whose information protection mode type 18b is “out of range”, and determines whether or not to perform the information protection operation based on the information protection setting 18c corresponding to the information. (Step S402). That is, if the information protection setting 18c is “OFF”, the information protection unit 17 ends the information protection operation (step S403).

  On the other hand, if the information protection setting 18c is “ON”, the information protection unit 17 determines whether or not to perform initialization using the initialization setting 18h corresponding to the information searched in step S302 (step S404). . If the initialization setting 18h is “off”, the information protection operation is terminated (step S403).

  On the other hand, if the initialization setting 18h is “ON”, the information protection unit 17 initializes the internal storage unit 20 (step S405). The initialization operation of the internal storage unit 20 is the same as the initialization operation in step S209 of the information protection operation by the search of the information protection unit 17 described with reference to FIG. .

  Subsequently, the information protection unit 17 checks whether or not to initialize the external storage medium 31 by the external storage medium initialization 18k corresponding to the information searched in step S402 (step S406). If the external storage medium initialization 18k is “off”, the information protection unit 17 ends the information protection operation (step S403). On the other hand, if the external storage medium initialization 18k is “ON”, the information protection unit 17 initializes the external storage medium 31 (step S407) and ends the information protection operation (step S403).

  The initialization operation of the external storage medium 31 in step S207 is the same as the initialization operation in step S211 of the information protection operation by the search of the information protection unit 17 described with reference to FIG. Is omitted.

  FIG. 18 shows a flowchart of the information protection operation of the information protection unit 17, that is, the information lock operation, when the mobile communication terminal device MS has been continuously set offline for a predetermined time. The information protection operation of the information protection unit 17 in the offline setting is the information protection when the mobile communication terminal device MS is continuously out of service for a predetermined time as described with reference to FIG. This is similar to the information protection operation of the unit 17. Therefore, the same reference numerals are assigned to the same operation steps, and description thereof is omitted.

  The control unit 11 measures the time during which the mobile communication terminal device MS is continuously set to offline. When the mobile communication terminal MS is in the offline setting for the grace time 18g or more and the information protection mode type 18b corresponding to the grace time 18g is “offline”, the information protection unit 17 11 to start the operation (step S501).

  Then, information with the information protection mode type 18b “offline” is searched from the information protection parameter 18a, and it is determined whether or not to perform the information protection operation based on the information protection setting 18c corresponding to the information (step S502). . That is, if the information protection setting 18c is “OFF”, the information protection unit 17 ends the information protection operation (step S303).

  On the other hand, if the information protection setting 18c is “ON”, the information protection unit 17 has already explained that the information protection unit 17 when the mobile communication terminal device MS is continuously out of service for a predetermined time. Step S304 and subsequent steps of the information protection operation are performed. Note that in step S304 in the information protection operation of the information protection unit 17 in the offline setting, information corresponding to the information searched in step S502, that is, information in which the information protection mode type 18b is “offline”. The stored information is referred to.

  In step S501, the information protection unit 17 is activated when the mobile communication terminal device MS has been continuously set offline for a grace period of 18g or longer. As described in the operation of step S301, the information protection unit 17 is activated. It is not limited. For example, it may include a case where the time during which the offline setting has been performed is a grace period of 18 g or more across the short period when the offline setting has been canceled. According to this process, it is possible to protect information when an offline user has made an offline setting over a grace period of 18 g or more, with an unauthorized user canceling a short offline setting.

  In FIG. 19, the mobile communication terminal device MS is in an offline setting, and as described with reference to FIG. 18, the information is locked, and an incorrect number is continuously input a predetermined number of times as the unlock code. 5 shows a flowchart of the information protection operation of the information protection unit 17, that is, the information initialization operation.

  The operation of the information protection unit 17 when an incorrect number is continuously input as the unlocking code number over the number of times of the code number error 18j is as described above with reference to FIG. It is similar to the information protection operation of the information protection unit 17 when an incorrect number is continuously input as the unlocked password number over the number 18j. Therefore, the same reference numerals are assigned to the same operation steps, and description thereof is omitted.

  The control unit 11 detects that the mobile communication terminal device MS is in the offline setting. When the information is locked, the control unit 11 inputs the unlock code from the input device 16 and the information protection mode type 18b is “offline”. Some information is retrieved from the information protection parameter 18a. Then, it is detected whether or not an unlock code number different from the unlock code number 18f corresponding to the retrieved information has been continuously input over the number 18j of code number errors corresponding to the information.

  The information protection unit 17 controls when the mobile communication terminal device MS is in an offline setting and an unlock code number different from the unlock code number 18f is continuously input over the code number error count 18j. The operation is started by the unit 11, and the operation is started (step S601).

  Then, information with the information protection mode type 18b being “offline” is searched from the information protection parameter 18a, and it is determined whether or not to perform the information protection operation based on the information protection setting 18c corresponding to the information (step S602). . That is, if the information protection setting 18c is “OFF”, the information protection unit 17 ends the information protection operation (step S403).

  On the other hand, if the information protection setting 18c is “ON”, the information protection unit 17 has already described the mobile communication terminal device MS located outside the service area, and as a lock unlock code number, the code number error count 18j is reached. Step S404 and subsequent steps of the information protection operation of the information protection unit 17 when an incorrect number is continuously input are performed. Note that in steps S404 and S406 in the information protection operation of the information protection unit 17 when this offline setting is set, information corresponding to the information searched in step S602, that is, the information protection mode type 18b is “offline”. The information stored in association with the information “” is referred to.

  Next, an operation for unlocking the information locked by the information protection unit 17 will be described. When the internal storage unit 20 and the external storage medium 31 are locked by the information protection unit 17 activated when the control unit 11 receives the search instruction signal, the control unit 11 performs the operation of setting the information protection mode in FIG. The continuous production destination and the standby message described with reference to step S106 and the display of the display unit 15 shown in FIG. 6 are displayed on the standby screen. And the control part 11 guide | induces the input of a general purpose password. When the general password is input, the control unit 11 unlocks the internal storage unit 20 and the external storage medium 31.

  When the information protection unit 17 activated by the control unit 11 locks the internal storage unit 20 and the external storage medium 31 when located outside the service area, the control unit 11 guides the input of the unlock code. When the unlock code is input, the control unit 11 searches the information protection parameter 18a for information whose information protection mode type 18b is “out of service area”, and obtains the unlock code number 18f corresponding to the information. When the obtained unlock code number 18f is equal to the input unlock code number, the control unit 11 unlocks the internal storage unit 20 and the external storage medium 31.

  When the information protection unit 17 activated by the control unit 11 locks the internal storage unit 20 and the external storage medium 31 in the offline setting, the control unit 11 guides the input of the unlock code. When the unlock code is input, the control unit 11 searches the information protection parameter 18a for information whose information protection mode type 18b is “offline”, and obtains the unlock code number 18f corresponding to the information. When the obtained unlock code number 18f is equal to the input unlock code number, the control unit 11 unlocks the internal storage unit 20 and the external storage medium 31.

  Here, whether the user is a legitimate user using the unlock PIN number 18f instead of the general PIN when releasing the lock applied by being located outside the service area or being offline. Judgment is made. Unlike general-purpose passwords, the unlock password PIN 18f is unlikely to be frequently input, and therefore is less likely to be viewed by a person other than a legitimate user. Can be performed more reliably.

  In the above description, when the external storage medium 31 is locked, the connection unit 21 sets the external storage medium 31 to be unremovable. However, the present invention is not limited to this. For example, the external address book 31 a stored in the external storage medium 31 may be moved to the internal storage unit 20. By moving the information to the internal storage unit 20, there is no information stored in the external storage medium 31, so even if the external storage medium 31 is removed, there is less risk of information leaking.

  In the above description, the information is protected by locking and initialization. However, the present invention is not limited to this. For example, instead of locking or initialization, the information may be encrypted and replaced with the information before encryption. In this case, the encryption key is input as part of the information protection mode setting input of the information protection unit 17 shown in the flowchart of FIG. 3, and is stored as part of the information protection parameter 18a. The encrypted information is decrypted by inputting the key.

  Locking makes it easy for a legitimate user to unlock and allow access to information. According to the initialization, information can be reliably protected. According to the encryption, it is possible for a legitimate user to decrypt the cipher to enable access to the information, and it is unlikely that the information is accessed by a person other than the legitimate user.

  In the above description, the connection unit 21 sets the external storage medium 31 to be unremovable when the external storage medium 31 is locked. However, the present invention is not limited to this. For example, when initializing the external storage medium 31, moving information stored in the external storage medium 31 to the internal storage unit 20, or encrypting information stored in the external storage medium 31 The external storage medium 31 may be set so as not to be removable. This can further reduce the risk of information leakage.

  In the above description, the internal storage unit 20 stores the internal address book 20a and the external storage medium 31 stores the external address book 31a. However, the present invention is not limited to this. The internal storage unit 20 and the external storage medium 31 may store any information in any format. All of the above information is subject to information protection in this embodiment.

  Furthermore, although the above description has been made taking an example in which the present invention is applied to the mobile communication terminal apparatus MS, the present invention is not limited to this. In the above description, information protection is performed in three types of search mode, out-of-service mode, and offline mode. However, the present invention is not limited to this. It may be performed in two or less modes. In addition, the items described in the three types of settings can be selected in any combination. The present invention is not limited to the above configuration, and various modifications are possible.

The block diagram which shows the structure of the mobile communication terminal device which concerns on embodiment of this invention. The figure which shows an example of the information protection parameter which concerns on embodiment of this invention. The flowchart which shows the operation | movement which sets the information protection mode of the information protection part which concerns on embodiment of this invention. The figure which shows an example of the information protection mode setting screen displayed on a display part by the information protection part which concerns on embodiment of this invention (the 1 and selection of information protection mode classification). The figure which shows an example of the information protection mode setting screen displayed on a display part by the information protection part which concerns on embodiment of this invention (the 2 and search mode setting, lock setting). The figure which shows an example of the information protection mode setting screen displayed on a display part by the information protection part which concerns on embodiment of this invention (the 3rd, the input of the character accompanying a lock setting by search mode setting). The figure which shows an example of the information protection mode setting screen displayed on a display part by the information protection part which concerns on embodiment of this invention (the 4th, input of an initialization password by search mode setting). The figure which shows an example of the information protection mode setting screen displayed on a display part by the information protection part which concerns on embodiment of this invention (the 5 and initialization setting by search mode setting). The figure which shows an example of the information protection mode setting screen displayed on a display part by the information protection part which concerns on embodiment of this invention (the 6 and mode setting at the time of out of service). The figure which shows an example of the information protection mode setting screen displayed on a display part by the information protection part which concerns on embodiment of this invention (the 7 and a lock setting by out-of-service mode setting). The figure which shows an example of the information protection mode setting screen displayed on a display part by the information protection part which concerns on embodiment of this invention (the 8 and initialization setting by out-of-service mode setting). The figure which shows an example of the information protection mode setting screen displayed on a display part by the information protection part which concerns on embodiment of this invention (the 9 and mode setting at the time of offline). The figure which shows an example of the information protection mode setting screen displayed on a display part by the information protection part which concerns on embodiment of this invention (the 10 and lock setting by the mode setting at the time of offline). The figure which shows an example of the information protection mode setting screen displayed on a display part by the information protection part which concerns on embodiment of this invention (the 11 and initialization setting by offline mode setting). The flowchart of the operation | movement of information protection of the search mode by the information protection part which concerns on embodiment of this invention. The flowchart of the operation | movement of information protection when it is located out of the predetermined time range by the information protection part which concerns on embodiment of this invention. The flowchart of the operation | movement of information protection in the case of a PIN code error located outside the service area by the information protection unit according to the embodiment of the present invention. The flowchart of the operation | movement of information protection at the time of having been offline setting for the predetermined time by the information protection part which concerns on embodiment of this invention. The flowchart of the operation | movement of information protection in the case of an offline setting by the information protection part which concerns on embodiment of this invention, and a PIN code error.

Explanation of symbols

15 Display unit 16 Input device 17 Information protection unit 18 Information protection parameter storage unit 18a Information protection parameter 18b Information protection mode type 18c Information protection setting 18d Lock setting 18e Lock code number 18f Unlock code number 18g Delay time 18h Initialization setting 18i Initial Password 18j PIN number error count 18k External storage medium initialization 20 Internal storage unit 20a Internal address book 21 Connection unit 31 External storage medium 31a External address book MS Mobile communication terminal device

Claims (5)

A mobile communication terminal device from which an external storage medium can be removed,
Password information storage means for storing password information;
If communication with the base station cannot be performed for a predetermined time, access to the information stored in the external storage medium is prohibited, and then the password information stored in the password information storage means A mobile communication terminal device comprising: information protection means for initializing the external storage medium when different password information is input a predetermined number of times. 2. The mobile communication according to claim 1, wherein the information protection unit makes the external storage medium unremovable when communication with a base station cannot be performed over the predetermined time. Terminal device. A mobile communication terminal device from which an external storage medium can be removed,
Internal storage means;
When communication with the base station cannot be performed for a predetermined time, the information stored in the external storage medium is moved to the internal storage means, and the information stored in the internal storage means is accessed. An information protection means for prohibiting the mobile communication terminal device. A mobile communication terminal device from which an external storage medium can be removed,
Internal storage means;
When communication with the base station cannot be performed for a predetermined time, the information stored in the external storage medium is converted into encrypted information, and the encrypted information is stored in the external storage. A mobile communication terminal device comprising: a medium or an information protection unit stored in the internal storage unit. The mobile communication terminal device can be set in an offline mode to stop communication with the base station,
The mobile communication terminal according to any one of claims 1 to 4, wherein the case where communication with the base station cannot be performed is a case where the offline mode is set. apparatus.

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