JP2006014158A - Portable terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal urging an operation to a third person while preventing the recognition of a security mode by a third person and being capable of tracking an operation history by the third person. <P>SOLUTION: When a portable telephone 10 is set in the security mode, a display unit 4 displays dummy data such as a false telephone directory. The portable telephone 10 is operated without the consciousness of the working of a security function to the third person. The log of a malfeasant operation conducted by the portable telephone 10 during the security function is conserved in a memory 3. When the capacity of the conserved log reaches a constant size and a fixed time passes, the log is transmitted to a personal computer or the like for a portable-telephone owner from a communication section 5. The third person cannot use the portable telephone because of displayed false data. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mobile terminal such as a mobile phone having a security function, and more particularly to a mobile terminal having a function of preventing unauthorized use by others.

Conventionally, security functions provided in mobile phones include a prohibition function that prohibits execution of specific operations, such as a key operation prohibition function, a call prohibition function, and a specific telephone directory browsing prohibition function, and only specific information. There is a display restriction function that protects and prevents display. In addition, there is also known a mobile phone in which the button operation is invalid unless a predetermined password is input when the security mode for realizing the security function is set. Furthermore, when the mobile phone is lost and the owner sends an e-mail containing a predetermined command to the mobile phone, the personal information data recorded on the mobile phone is replaced with fictitious data. Technology to protect personal data has also been reported. There has also been reported a technique for preventing privacy information from being seen by displaying a dummy image when an e-mail is created. In addition, a technique is disclosed in which secret setting is performed by selectively controlling display / non-display, such as not displaying a part of information transmitted by the calling party (for example, the name of the calling party) according to the usage status of the called party (For example, refer to Patent Document 1).
JP 2000-196732 A (see paragraph numbers 0008 to 0014 and FIGS. 1 to 3)

  However, in the conventional mobile phone, while the security function is working, a predetermined message is notified and error information is displayed and sounded. Therefore, regardless of the owner of the mobile phone or an unauthorized person, You can quickly see that is in security mode. In this way, the fact that the mobile phone is in the security mode (that is, the terminal setting that is currently locked) is displayed in an easy-to-understand manner for the user. It is extremely convenient to check the current setting state and prevent forgetting to release the lock state. However, when it is assumed that the mobile phone is lost or stolen and operated by a malicious user (hereinafter referred to as a third party), it may be more convenient for the mobile phone to be difficult to understand. In other words, there are cases where it is easy to track the operation history of a third party by operating the mobile phone without knowing that the third party is locked.

  On the other hand, if it is easily known that a third party is locked, it will be judged that nothing can be operated and give up the operation, so what the third party tried to operate with the mobile phone You can't get or track information. Also, if you can easily find out that your mobile phone is locked, you can deliberately release the lock, steal your communication history and phone book, and pretend to be the owner of your mobile phone to make voice calls and send mail. May be executed.

  The present invention has been made in view of the above-described problems. The third embodiment does not recognize that the security mode is set for the third party, and actively encourages the third party to perform the operation. An object of the present invention is to provide a mobile terminal such as a mobile phone having a function capable of tracking communication history by three parties.

  The mobile terminal of the present invention was created in order to achieve the above-described object, and is a mobile terminal having a security function, and a display different from true data during execution of the security function, for example, pre-stored Display means (display section 4) for displaying the dummy data, storage means (memory section 3) for saving operation history data when an operation is performed during execution of the security function as log data, and storage means A configuration comprising a transmission means (communication unit 5) for transmitting the log data stored in the storage means when the stored log data has reached a certain size, or when the log data has been stored and a certain time has elapsed. It was.

  According to this configuration, when the security mode is set on the portable terminal, the fake telephone directory data or the like is displayed as dummy data on the display means (display unit 4), and an operation when an unauthorized operation is performed is performed. The history information is stored as log data (memory unit 3). When the log data reaches a certain capacity, the log data is transmitted from the transmission means (communication unit 5) to the personal computer of the portable terminal holder. As a result, the portable terminal holder can track the history of unauthorized operations from the log data.

  Further, the portable terminal of the present invention is configured such that the third party who performs unauthorized operations on the portable terminal is not notified that the security function is being executed. According to such a configuration, since the third party is not informed that the security function is being executed, the dummy data displayed on the display means (display unit 4) is the true data (for example, the phone book). Data and transmission / reception history data) and actively operating the mobile terminal, it is possible to easily track the operation history of unauthorized operations.

  The portable terminal of the present invention is configured to return to the normal communication mode when the security function is released. According to this configuration, when a lost or stolen mobile terminal returns to the owner's hand, the security function is canceled at the owner's will, and a voice call or e-mail is sent in the normal communication mode. Can be made.

  According to the portable terminal of the present invention, by storing log data that is an unauthorized operation history during setting of the security mode, information on what an unauthorized person is attempting to operate is acquired and the unauthorized operation is traced. be able to. At this time, by displaying a fake image or the like as dummy data, the operation of a malicious third party who does not know that the security mode is being set is actively promoted, and the contents of the unauthorized operation are further traced. be able to. Also, when someone close to you operates the mobile terminal while the security mode is set, you know that the displayed data is dummy data. If necessary, cancel the security mode and switch to the normal communication mode. It can be used by switching to

  Further, by transmitting log data for illegal operations to a pre-registered address, it is possible to know at an early stage that an illegal operation has been performed, and it is also possible to know the time at which an illegal operation has been attempted. Furthermore, it is possible to analyze what the intention is to perform an unauthorized operation. In addition, the log data can prevent voice calls and mails from being impersonated as a legitimate user. Furthermore, since a voice call or mail is sent to a telephone number or address set in advance when an operation is attempted, it is possible to immediately know that an unauthorized operation has been performed.

  First, an outline of a mobile phone according to the present invention will be described. The mobile phone of the present invention protects important data of the mobile phone owner by displaying a fake image (hereinafter referred to as dummy data) while the security mode is being set (hereinafter referred to as the security function is being executed). By displaying the dummy data in this way, a malicious user (third party) can operate the mobile phone without being aware of the security function when the mobile phone is lost or stolen. Actively encourage you to do it.

  Further, for operations performed on the mobile phone during the security function, data input in the case of unauthorized use (hereinafter referred to as log data) is stored. Then, the stored log data is transmitted when the capacity of the stored log data reaches a certain size or when a certain time elapses. The transmission destination of the log data at this time is, for example, a personal computer (hereinafter referred to as a personal computer) of the mobile phone owner. Thereby, the mobile phone owner can check the contents of the log data stored in the corresponding mobile phone. In addition, when a third party attempts to make a voice call or e-mail from a mobile phone with security functions, the background image, display color, and various sound generation patterns of the mobile terminal are set in the security mode and non-security mode. The log data is transmitted / received only to a telephone number or address registered in advance, in a manner different from the above, or simply not understood by a third party.

  That is, the cellular phone of the present invention is characterized by having a function of displaying dummy data during a security function and a function of saving and transmitting log data during operation. As a result, it is possible to actively promote the use of the mobile phone to a third party who does not know that the security function is being performed, and leave evidence for the unauthorized use of the mobile phone. You can expect.

  Hereinafter, an embodiment of a mobile terminal according to the present invention will be described in detail with reference to the drawings by applying it to a mobile phone. In the following embodiments, descriptions of calling / outgoing functions and security functions normally performed by a mobile phone will be omitted as much as possible, and the description will focus on the security functions according to the present invention. FIG. 1 is a block diagram showing a configuration of a mobile phone according to the present invention. Referring to FIG. 1, a mobile phone 10 is input from a power supply unit 1 having a rechargeable secondary battery, an operation unit 2 that is an MMI (Man Machine Interface) such as a keyboard, and an operation unit 2 when used illegally. Memory unit 3 that stores the recorded operation history information as log data, display unit 4 that displays dummy data such as a fake call history and fake telephone directory, and a public network without passing through an MMI such as a keyboard. A communication unit 5 for transmitting log data, a microphone / speaker 6 for notifying a predetermined message or displaying error information as necessary during the security function, security mode management, and memory unit 3 The control unit 7 is configured to record log data, send log data to the communication unit 5, and control display of dummy data on the display unit 4.

  Next, an outline of the operation in the security mode performed by the mobile phone 10 shown in FIG. 1 will be described. When the mobile phone 10 is set to the security mode, the display unit 4 displays dummy data such as a fake phone book. In this way, it is actively urged to operate the mobile phone 10 without making a third party aware of the security function. Furthermore, log data of unauthorized operations performed on the mobile phone 10 during the security function is stored in the memory unit 3. When the capacity of the log data stored in the memory unit 3 reaches a certain size or a certain time has elapsed, the log data is transmitted from the communication unit 5 to a personal computer (not shown) of the mobile phone owner. Since the phone book displayed on the display unit 4 during the security function is a fake phone book, a third party cannot use it. However, in order not to be understood by a third party, log data is called / transmitted only to telephone numbers and addresses registered in advance, and unauthorized operations are notified.

  Next, the operation during the security function performed by the mobile phone 10 shown in FIG. 1 will be described in more detail using a flowchart. First, the flow of creating and storing dummy data will be described. FIG. 2 is a flowchart showing a flow of creation and storage of dummy data in the mobile phone shown in FIG. First, when the owner of the mobile phone inputs a desired character string from the operation unit 2, the control unit 7 creates dummy data (step S1). At this time, as dummy data, dummy data of a character string desired by the mobile phone holder can be manually created, or dummy data of a predetermined character string can be automatically created.

  The dummy data created in step S1 in this way is stored in the area of the fake database in the memory unit 3 (step S2). In addition, a telephone directory such as a voice call destination and an electronic mail destination when the security mode is set is registered in the area of the fake database in the memory unit 3 (step S3). Through the flow as described above, the desired dummy data is stored in the area of the fake database in the memory unit 3 corresponding to the secret telephone directory of the mobile phone holder, the data used by the mobile phone holder in the past, and the like.

  Next, the flow of operations in which the mobile phone displays dummy data and saves / transmits log data during the security function will be described. FIG. 3 is a flowchart showing the flow of data display and data transmission during the security function and during normal operation in the mobile phone shown in FIG. That is, FIG. 3 shows the flow of displaying dummy data and storing / transmitting log data during the security function, and the flow of normal data. In this flowchart, the flow of operation when setting the security mode is shown on the left side of the figure, and the flow of operation in the normal time is shown on the left side of the figure.

  First, at the time of setting the security mode, the control unit 7 determines whether or not the security mode of the mobile phone 10 is turned on (step S11). If the security mode is ON (Yes in step S11), the control unit 7 acquires dummy data from the fake database in the memory unit 3 and causes the display unit 4 to display the dummy data (step S11). S12). FIG. 5 is a diagram illustrating an example of dummy data acquired from the fake database and displayed on the screen of the display unit. In the example of this figure, dummy data of company information and personal information is displayed. Furthermore, when a user such as a third party performs an unauthorized operation using the operation unit 2 (step S13), log data indicating the operation history is stored in the operation log database of the memory unit 3 (step S14).

  Next, the control unit 7 determines whether or not the capacity of the log data stored in the operation log database of the memory unit 3 has reached a certain size or a certain time has elapsed and the timing for transmitting the log data has been reached ( Step S15). If the log data transmission timing has been reached (Yes in step S15), the communication unit 5 acquires the log data stored in the operation log database of the memory unit 3, and stores the log data. It transmits to the personal computer etc. of the owner of the mobile telephone 10 (step S16). Thereby, the owner of the mobile phone 10 can check the operation history by a third party from the contents of the log data.

  Next, the control unit 7 determines whether or not the operation of the mobile phone 10 is finished (step S17). If the operation of the mobile phone 10 is not finished yet (in the case of No in step S17), the step Returning to 12, the above-described processing is repeated. On the other hand, if the operation of the mobile phone 10 has been completed in step S17 (Yes in step S17), the operation of displaying dummy data and saving / transmitting log data during the security function is terminated. If it is determined in step S15 that the log data transmission timing has not been reached (No in step S15), it is determined whether or not the operation of the mobile phone 10 has been completed without transmitting the log data ( Step S17) If the operation of the mobile phone 10 is finished (Yes in Step S17), the dummy data display and log data storage / transmission processing in the security function is finished.

  Further, as a normal operation, if the security mode of the mobile phone 10 is not turned on in Step S11, that is, if the mobile phone 10 is not in a security function (No in Step S11), the control unit 7 Acquires normal data (that is, true telephone directory data, etc.) from the normal database of the memory unit 3 and displays the normal data on the display unit 4 (step S18). When a legitimate user (that is, the owner of the mobile phone 10) performs an operation with the operation unit 2 (step S19), normal communication processing in the mobile phone 10 is executed (step S20). It is determined whether or not the operation of the mobile phone 10 has been completed (step S21). If the operation of the mobile phone 10 has not been completed (No in step S21), the process returns to step S18 and normal data is displayed on the display unit 4. Display, and repeat the same processing as described above. On the other hand, if the operation of the mobile phone 10 is finished (Yes in step S21), the communication process in the normal time is finished.

  Next, a description will be given of the flow of operations in which the mobile phone makes a voice call and mail transmission during the security function. FIG. 4 is a flowchart showing the flow of voice call and mail transmission during the security function and normal time in the mobile phone shown in FIG. In this flowchart, the flow of operations when the security mode is set is shown on the left side of the figure, and the flow of normal operations is shown on the left side of the figure.

  First, at the time of setting the security mode, the control unit 7 determines whether or not the security mode of the mobile phone 10 is turned on (step S31). Here, if the security mode is ON (in the case of Yes in step S31), when an operation of voice transmission or mail transmission is performed by a malicious user (third party) (step S32), the control unit 7 Only the fake telephone number and fake address registered in the fake database of the memory unit 3 are acquired, and the fake phone number and fake address are called from the communication unit 5 and transmitted (step S33).

  Further, as a normal operation, if the security mode of the mobile phone 10 is not turned on in step S31, that is, if the mobile phone 10 is not in a security function (No in step S31), the communication unit 5 Makes a call / call to the telephone number or mail address displayed on the display unit 4 (step S34).

  In this way, when the mobile phone is in the security function, the dummy data that is fake data such as the fake call history and the fake phone book is displayed without making the third party aware of the security function. At the same time, log data as operation history information of a third party is stored, and the log data is transmitted from the public network to the personal computer of the mobile phone owner without passing through the MMI whenever necessary. At this time, since the telephone number and the mail address are fake data, there is no possibility that a call is made or transmitted to the original telephone number or mail address. As a result, it is possible to store or track a malicious operation history by a third party. Regardless of the actual display content, it is possible to immediately recognize unauthorized use by setting to make a call or call to a home number or a security organization.

  Note that it may be difficult for the owner of the mobile phone to determine whether or not the security mode (that is, the unauthorized use prevention mode) is set. Therefore, it is an important issue to determine whether or not the security mode is present, and to release the lock by entering a password or the like when the security mode is being set. Hereinafter, an example of a determination method when determining whether or not the security mode is set will be described.

The first determination method allows arbitrary setting of real and fake background screens.
The second determination method is (a) screen blinking / flashing pattern, (b) LED flashing / lighting / flashing pattern, when an operation related to wireless access such as voice call or mail transmission is performed. c) It is possible to freely set a pattern such as the presence / absence of a wireless access start sound / sound pattern.
In this way, by changing the background screen and various operation patterns between the normal mode and the security mode, the owner of the mobile phone can set the security mode according to the currently displayed background screen and the operation at the time of key operation. It can be immediately determined whether or not. At this time, since free setting is possible, only the person can know whether or not the user is in the security mode, and the third party cannot determine whether or not the security mode is being set. In addition, it is necessary to provide a function for checking an authentication number such as a password and prohibit setting by a third party before setting a real / fake background screen or wireless access.

It is a block diagram which shows the structure of the mobile telephone in this invention. 3 is a flowchart showing a flow of creation and storage of dummy data in the mobile phone shown in FIG. 3 is a flowchart showing a flow of data display and data transmission during the security function and during normal operation in the mobile phone shown in FIG. 2 is a flowchart showing a flow of voice call and mail transmission during the security function and normal time in the mobile phone shown in FIG. It is a figure which shows an example of the dummy data acquired from the fake database and displayed on the screen of the display unit.

Explanation of symbols

1 power supply unit 2 operation unit 3 memory unit (storage means)
4 Display section (display means)
5 Communication part (transmission means)
6 Microphone / speaker 7 Control unit 10 Mobile phone

Claims (5)

A mobile terminal with a security function,
Display means for displaying data different from the true data corresponding to the key operation when a key operation is performed during the execution of the security function;
Storage means for storing operation history data as log data when an operation is performed during execution of the security function;
A transmission unit that transmits the log data stored in the storage unit when the log data stored in the storage unit reaches a certain size, or when the log data has been stored and a predetermined time has elapsed; ,
A portable terminal comprising:   The portable terminal according to claim 1, wherein the display means outputs dummy data corresponding to the operated key on condition that the security function is being executed. Multiple operations for at least one of the background image, display color, screen flashing / flashing pattern, LED flashing / lighting / flashing pattern, and wireless access start sound / sounding pattern Storage means for storing;
2. A switching means for determining whether the security function is being executed or not being executed, and switching from any one of the plurality of types of operation to another operation according to the determination result. 2. The mobile terminal according to 2.   The mobile terminal according to claim 1 or 2, wherein the fact that the security function is being executed is not displayed on the mobile terminal. 5. The mobile terminal according to claim 1, wherein when the security function is released, the mobile terminal returns to a normal mode.

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