JP2011087179A - Mobile terminal, and method of controlling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal that effectively protects data even under the circumstances where information is likely to leak, and to provide a method of controlling the same. <P>SOLUTION: The mobile terminal 1 includes: an acceleration detection portion 101; a state determination portion 102; and an information restriction portion 103. The acceleration detection portion 101 detects the acceleration generated in the mobile terminal 1. The state determination portion 102 determines whether a user of the mobile terminal has brought out the mobile terminal by walking a predetermined distance based on the acceleration detected by the acceleration detector. The information restriction portion 103 restricts the use of the information stored in the terminal 1 when the state determination portion 102 determines that the user has brought out the mobile terminal by walking the predetermined distance. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a mobile terminal and a control method thereof, and more particularly to a mobile terminal including an automatic lock device and a control method thereof.

  In general, a portable terminal that is expected to be taken out of a mobile phone or the like is equipped with a lock function that uses data stored by the user and restricts the function execution of the portable terminal. This lock function is used to prevent leakage of information stored in the mobile terminal due to loss or the like.

  However, since the lock function is manually operated by the user, the lock function is sufficiently performed because the lock function is often forgotten or the lock function itself is troublesome. Sometimes it wasn't alive. In addition, there is a technology that automatically locks by triggering the folding or sliding operation of the mobile phone, but when using the mobile phone again, it takes time and effort to release the lock. Safety was traded for convenience.

  As an example of the automatic lock function, Patent Document 1 discloses an automatic lock function that is performed by detecting the number of steps of the user and using walking as a trigger. In addition, as an example of an automatic lock function that eliminates the trade-off relationship between safety and convenience as described above, Patent Document 2 describes the state of non-use of a mobile phone by using RFID (Radio Frequency IDentification). A technique for providing an automatic lock function using detection as a trigger is disclosed. Furthermore, Patent Documents 3 and 4 disclose an automatic lock function triggered by detection of a fall of a portable information device.

  On the other hand, Patent Document 5 discloses a technique for determining whether a user has moved or stopped and controlling incoming calls according to the movement status. Patent Document 6 discloses a technique for notifying an abnormal situation of a person to be protected based on the number of steps, the moving speed, and the current location of the person to be protected.

JP 2003-298690 A JP 2005-268883 A JP 2004-128547 A JP 2008-236336 A JP 2008-148155 A JP 2007-58790 A

  However, the technique disclosed in Patent Document 1 is a technique for determining whether or not the user is walking, and automatically locks the vehicle when walking and releases the lock after stopping walking. Therefore, no measures are taken against the case where the mobile phone is lost after being taken out by walking. Further, in order to use the technique disclosed in Patent Document 2, it is necessary for the user to wear an RFID transmitter in addition to the mobile phone, which is troublesome.

  The techniques disclosed in Patent Documents 3 and 4 do not use processed information such as the number of steps and lock the fall detection using acceleration information as a trigger, so that there is no need to wear a transmitter. However, there has been a problem that the effect of the automatic lock function cannot be expected in the case of loss other than dropping, such as forgetting to place the mobile terminal in the place where it is carried.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a portable terminal capable of effectively protecting data even in a situation where information leakage is likely to occur, and a control method thereof. To do.

  The mobile terminal according to the present invention has an acceleration detection means for detecting an acceleration generated in the mobile terminal, and a predetermined distance that the user of the mobile terminal assumes the mobile terminal in advance based on the acceleration detected by the acceleration detection means. When the state determination unit that determines whether or not the user has walked and taken out and the state determination unit determines that the user has walked and taken out the predetermined distance, the information stored in the portable terminal is used. Information limiting means for limiting.

  The mobile terminal according to the present invention has an acceleration detection means for detecting an acceleration generated in the mobile terminal, and a predetermined distance that the user of the mobile terminal assumes the mobile terminal in advance based on the acceleration detected by the acceleration detection means. State determining means for determining whether or not the mobile terminal has fallen by walking, and the state determining means determine that the user has walked and taken out the predetermined distance; and An information restriction unit that restricts use of information stored in the portable terminal when it is determined that the portable terminal has fallen, and the state determination unit includes, among the accelerations detected by the acceleration detection unit, Counts the number of times the acceleration that is higher than the walking level and lower than the fall level is detected, and if the counted number exceeds the predetermined number, the user walks and takes out the predetermined distance. It determined that, when the falling level acceleration or more is detected, the portable terminal is one which determined to have fallen.

  The mobile terminal control method according to the present invention includes a step of detecting an acceleration generated in the mobile terminal, and a user of the mobile terminal walks and takes out the mobile terminal for a predetermined distance based on the detected acceleration. And a step of restricting the use of information stored in the portable terminal when it is determined that the user has walked and taken out the predetermined distance.

  The mobile terminal control method according to the present invention includes a step of detecting an acceleration generated in the mobile terminal, and a user of the mobile terminal walks and takes out the mobile terminal for a predetermined distance based on the detected acceleration. A step of determining whether or not the mobile terminal has fallen, a step of determining whether or not the user has walked and taken out the predetermined distance, and a determination that the mobile terminal has fallen A step of restricting the use of information stored in the portable terminal, and the step of determining whether or not the user walks and takes out the predetermined distance falls below the walking level among the detected accelerations. Counts the number of times the acceleration below the level is detected, and if the counted number exceeds the predetermined number, it is determined that the user has walked and carried out the predetermined distance , Determining whether the mobile terminal is dropped, when the falling level acceleration or more is detected, the portable terminal is one which determined to have fallen.

  According to the present invention, it is possible to provide a portable terminal capable of effectively protecting data even in a situation where information leakage is likely to occur, and a control method therefor.

1 is a diagram illustrating a configuration example of a mobile terminal according to a first embodiment; 3 is a flowchart of a control method of the mobile terminal according to the first exemplary embodiment. 3 is a flowchart of a control method of the mobile terminal according to the first exemplary embodiment. 3 is a flowchart of a control method of the mobile terminal according to the first exemplary embodiment. It is a figure which shows the structural example of the portable terminal concerning Embodiment 2. FIG. 5 is a flowchart of a method for controlling a portable terminal according to a second embodiment; FIG. 6 is a diagram illustrating a configuration example of a mobile phone according to a third exemplary embodiment. FIG. 6 is a diagram illustrating a configuration example of a mobile terminal according to a fourth embodiment. FIG. 10 is a diagram illustrating a configuration example of a mobile terminal according to a fifth exemplary embodiment. FIG. 10 is a diagram illustrating a configuration example of a mobile terminal according to a sixth embodiment;

Embodiment 1
Embodiments of the present invention will be described below with reference to the drawings. The mobile terminal 1 shown in FIG. 1 includes an acceleration detection unit 101, a state determination unit 102, and an information restriction unit 103. Here, the portable terminal refers to an information device such as a cellular phone or a portable audio player that stores information to be protected such as personal information.

  The acceleration detection unit 101 is configured by, for example, a three-axis acceleration sensor, and detects acceleration generated in the mobile terminal 1. Based on the acceleration detected by the acceleration detection unit 101, the state determination unit 102 determines whether or not the mobile terminal 1 has been walked and taken out for a predetermined distance. For example, when the acceleration detected by the acceleration detection unit 101 is an acceleration (walking level) that is caused by walking, and the acceleration at the walking level is detected a predetermined number of times, the user takes out the mobile terminal 1. Judge that he is walking.

  At this time, the predetermined distance assumed in advance refers to the mobile terminal 1 from a base (for example, home, school, company, etc.) that is unlikely to cause the user to lose the mobile terminal 1 or cause information leakage. This is the distance to reach the place where the mobile terminal 1 is likely to be lost and the information leakage is likely to occur (for example, away from home, commuting, etc.) . Further, the predetermined number of times is the number of impacts caused by walking that occurs before moving the predetermined distance, and is, for example, the number of steps required to move the predetermined distance. Since this predetermined number of times varies depending on the user's physique, action range, etc., the user may be able to set it.

  Furthermore, in addition to determining that the object has been taken out by walking as described above, the state determination unit 102 determines that the acceleration detected by the acceleration detection unit 101 is equal to or higher than the acceleration (drop level) generated when the mobile terminal 1 is dropped. The mobile terminal 1 may be determined to have fallen. When it is possible to determine the fall state, it is determined that the user has walked and carried out the mobile terminal 1 when the number of accelerations detected at or above the walking level and below the falling level exceeds a predetermined number. Also good.

  The information restriction unit 103 uses the information stored in the mobile terminal 1 when the state determination unit 102 determines that the user of the mobile terminal 1 has taken the mobile terminal 1 by walking a predetermined distance in advance. Restrict. Further, in addition to the case where the state determination unit 102 determines that the state determination unit 102 has taken out, the information restriction unit 103 restricts the use of the information stored in the portable terminal 1 even when it is determined that the mobile terminal 1 has dropped. Good. Restricting the use of information includes, for example, password saving for browsing stored data and performing various functions. Note that the range of information for restricting use may be settable by the user, such as restricting browsing of only the phone book and mail. Here, the state determination unit 102 and the information restriction unit 103 are configured by a control unit such as a processor unit, for example.

  Next, an operation example of the mobile terminal 1 according to the present embodiment will be described with reference to FIG. First, the state determination part 102 determines whether the acceleration detection part 101 detected the acceleration (S21). If it is not detected, it enters a state of waiting for input of acceleration.

  When the acceleration is detected, the state determination unit 102 determines whether or not the mobile terminal 1 has been brought out a predetermined distance assumed in advance by the user based on the detected acceleration (S22). When the state determination unit 102 determines that the mobile terminal 1 has not been taken out, the state waits for input of acceleration.

  On the other hand, if the state determination unit 102 determines that the mobile terminal 1 has been taken out by the user, the information restriction unit 103 determines that there is a possibility of information leakage due to loss or the like at the take-out destination. A lock function is executed to limit the use of the information stored in (S23).

  Next, an example of the operation of the mobile terminal 1 will be described in detail with reference to FIG. 3 corresponds to the state determination flow of the state determination unit 102.

  First, the state determination part 102 determines whether the acceleration detection part 101 detected the acceleration (S21). When the acceleration is detected, the state determination unit 102 determines whether the acceleration is equal to or higher than the walking level (S221). That is, it is determined whether or not the mobile terminal 1 is being taken out. The magnitude of this walking level acceleration may be settable by the user of the mobile terminal 1. If the state determination unit 102 determines that the detected acceleration is less than the walking level, it can be determined that the mobile terminal 1 has not been taken out, so the state again waits for input of acceleration (S21).

  When the acceleration is equal to or higher than the walking level, the state determination unit 102 determines whether or not the acceleration is equal to or higher than the fall level (S222). This fall level acceleration may be set by the user. When the detected acceleration is equal to or higher than the drop level, it can be determined that the mobile terminal 1 is in an emergency such as a drop. Therefore, in this case, the state determination unit 102 requests the information restriction unit 103 to execute the information lock function, and the information restriction unit 103 illustrated in FIG. 1 is stored in the mobile terminal 1 in response to the request. Use of the stored information is restricted (S23).

  On the other hand, if the state determination unit 102 determines that the detected acceleration is equal to or higher than the walking level and lower than the fall level, the state determination unit 102 counts an acceleration generated in the mobile terminal 1, that is, an impact (S223). This count may be incremented or decremented from an arbitrary value.

  Then, the state determination unit 102 determines whether or not the counted number of impacts exceeds a predetermined number (S224), and if it exceeds, it can be determined that the mobile terminal 1 has been taken out by the user. Therefore, the information lock function is executed (S23).

  If the state determination unit 102 determines that the number of impacts does not exceed the predetermined number, it is determined that the mobile terminal 1 has not been taken out. (S21).

  As illustrated in FIG. 4, the information restriction unit 103 may execute the information lock function based on the two determinations of S221 and S222. The information restriction unit 103 does not execute the lock function only when the state determination unit 102 determines that the portable terminal 1 is being taken out (S225). In this case, the acceleration input waiting state is maintained while maintaining the determination of the take-out state (S21). Further, the lock function is not executed only when it is determined that the mobile terminal has dropped (S222). When it is determined that the state determination unit 102 has fallen, the information restriction unit 103 determines whether or not it has already been determined to be in the take-out state (S231), and if it is determined to be in the take-out state, the information lock function is activated. Execute (S23). As a result, the automatic lock function can be executed using a drop during takeout as a trigger. On the other hand, when the state determination unit 102 determines that the mobile terminal has fallen when it is not in the take-out state, the state again waits for input of acceleration (S21).

  With the configuration as described above, the mobile terminal 1 executes the lock function by taking out the mobile terminal 1 as a trigger. Therefore, data stored in the mobile terminal can be effectively protected in a state where there is a high possibility of information leakage, that is, a state where the mobile terminal is taken out. Moreover, since taking out of the portable terminal 1 is used as a trigger, both the convenience and safety can be achieved without bothering the user and without forgetting the lock operation.

Embodiment 2
A second embodiment according to the present invention will be described. The mobile terminal 2 shown in FIG. 5 further includes a detection start unit 104 and a detection stop unit 105 in addition to the configuration of the mobile terminal 1 shown in FIG.

  The detection start unit 104 causes the acceleration detection unit 101 to start detecting acceleration based on the operation of the mobile terminal 2. Based on the operation, for example, acceleration detection is started when the folding cellular phone is folded or when a standby screen is displayed. The detection cancellation unit 105 stops the acceleration detection of the acceleration detection unit 101 based on the operation of the mobile terminal 2. For example, when a folded mobile phone is opened or a menu screen is displayed. Since the other configuration is the same as that of the portable terminal 1 shown in FIG. In addition, although not illustrated, only one of the detection start unit 104 and the detection stop unit 105 may be provided.

  Subsequently, an operation example of the mobile terminal 2 according to the present embodiment will be described with reference to FIG. First, the detection start unit 104 determines whether or not an acceleration detection start condition is satisfied (S24). The detection start condition is an operation of the mobile terminal 2 that starts acceleration detection as described above, and the user of the mobile terminal 2 may be able to set the condition.

  When the detection start condition is satisfied, the detection start unit 104 requests the acceleration detection unit 101 to start acceleration detection. And the state determination part 102 determines whether the acceleration detection part 101 detected the acceleration (S21). At this time, if the detection stop condition is satisfied before the acceleration is detected (S25), the detection stop unit 105 requests the acceleration detection unit 101 to stop detecting the acceleration, and the detection start condition Return to standby (S24). The detection stop condition is an operation of the mobile terminal 2 that stops the acceleration detection as described above. The detection stop condition may be set by the user of the mobile terminal 2.

  The acceleration detection unit 101 starts detecting acceleration (S21), and when the acceleration is detected, the state determination unit 102 determines whether or not the detected acceleration is equal to or higher than the walking level (S221). At this time, if the acceleration is less than the walking level, the state determination unit 102 determines that the acceleration is not caused by the carry-out, and enters the acceleration detection standby state (S25) again.

  When the detected acceleration is equal to or higher than the walking level, as in FIG. 3 described in the first embodiment, the information limiting unit 103 locks the information depending on whether the acceleration is equal to or higher than the falling level or lower than the falling level (S222). Function execution (S23) or impact count (S223) by the state determination unit 102 is performed.

  When the state determination unit 102 determines that the impact count exceeds a predetermined number, the state determination unit 102 determines that the user of the mobile terminal 2 is walking and moves, and the information restriction function is provided to the information restriction unit 103. The information restriction unit 103 executes the lock function (S23). On the other hand, when the state determination unit 102 determines that the impact count does not exceed the predetermined number, the state again enters the acceleration detection standby state (S25). The number of impact counts is initialized at the time of START in the flowchart shown in FIG. 5, and is maintained until the time of END in the flowchart.

  With such a configuration, the automatic lock function is not executed when the mobile terminal 2 is used or when it is left temporarily. Therefore, it is possible to eliminate the execution of the lock function even though there is an opportunity to use it immediately, and the convenience at the next use can be improved.

Embodiment 3
A third embodiment according to the present invention will be described. FIG. 7 shows a configuration example of a mobile phone 3 as an example of the mobile terminal 2. The mobile phone 3 includes an information processing unit 11, an acceleration sensor unit 12, a data storage unit 13, a program storage unit 14, an input unit 15, an output unit 16, and a communication function unit 17.

  The information processing unit 11 is, for example, a CPU (Central Processing Unit) and receives acceleration information from the acceleration sensor unit 12 and user input information from the input unit 15 regarding the mobile phone 3 and stores the information in the program storage unit 14 in advance. The operation of the mobile phone 3 is determined according to the stored program. As for the operation, communication functions such as telephone and mail provided by the communication function unit 17, display of processing operation results in the output unit 16 having a display, and storage or storage of input data in the data storage unit 13 Data reading, lock of stored data, display of stored data on the output unit 16 having a display, and the like are also included. That is, the information processing unit 11 corresponds to the state determination unit 102, the information restriction unit 103, the detection start unit 104, and the detection stop unit 105 illustrated in FIG.

  The acceleration sensor unit 12 includes a triaxial acceleration sensor and measures acceleration applied to the mobile phone 3. Some mobile phones in recent years provide functions such as screen display direction switching and front / back holding by this three-axis acceleration sensor. Normally, when the mobile phone 3 is taken out, acceleration is applied to the mobile phone 3 in synchronization with the mobile phone 3, so that the acceleration sensor unit 12 can detect the acceleration. That is, the acceleration sensor unit 12 corresponds to the acceleration detection unit 101 shown in FIG.

  The data storage unit 13 is, for example, a RAM (Random Access Memory), and provides a function of storing information acquired by data communication, input information from the input unit 15, and the like. The data storage unit 13 stores personal information of the user of the mobile phone 3 such as phone book information, e-mail information, schedule information, and the like. Therefore, the information processing unit 11 (information restriction unit 103) restricts the use of data stored in the data storage unit 13 during the lock function.

  The program storage unit 14 is, for example, a ROM (Read Only Memory), and stores a program executed by the information processing unit 11 in order to realize a function provided by the mobile phone 3.

  The input unit 15 is, for example, an input device such as a keyboard or a microphone. The user of the mobile phone 3 instructs the operation to the mobile phone 3 by operating and inputting it, gives information such as characters, Provide functions such as receiving audio when The input information is input to the information processing unit 11, and the input information is processed according to the program stored in the program storage unit 14. The information processing unit 11 (the detection start unit 104 and the detection stop unit 105) instructs the acceleration sensor unit 12 to start and stop acceleration detection based on the operation and input of the input unit 15.

  The output unit 16 is, for example, a display, a speaker, or the like, and has functions such as processing results of the information processing unit 11, display of data stored in the data storage unit 13, and sound of the other party's voice for a call. provide.

  The communication function unit 17 provides a wireless communication function, and is a wireless communication function used in functions such as voice call, mail transmission / reception, and videophone.

  Next, an operation example of the mobile phone 3 will be described. First, the information processing unit 11 determines whether or not the detection start condition is satisfied in the input unit 15 of the mobile phone 3. When the detection start condition is satisfied, the information processing unit 11 requests the acceleration sensor unit 12 to start acceleration detection. When acceleration occurs in the mobile phone 3, the acceleration sensor unit 12 detects the acceleration and inputs the acceleration to the information processing unit 11.

  Next, when the input acceleration is equal to or higher than the drop level, the information processing unit 11 determines that the mobile phone 3 has dropped, and the information stored in the data storage unit 13 according to the program stored in the program storage unit 14 is determined. Restrict usage.

  On the other hand, when the acceleration input from the acceleration sensor unit 12 is higher than the walking level and lower than the fall level, the information processing unit 11 counts the impact. When the number of impacts exceeds a predetermined number, the information processing unit 11 determines that the user of the mobile phone 3 is walking and the mobile phone 3 is being taken out and stores it in the data storage unit 13. Restrict the use of the information provided.

  On the other hand, when the input acceleration is less than the walking level, the information processing unit 11 determines that the acceleration is not an impact associated with the mobile phone 3 being taken out, and counts the impact again from the acceleration sensor unit 12 without counting the impact. Wait for input of acceleration.

  As described above, the configuration of the mobile phone 3 according to the present embodiment overlaps with the configuration of today's general mobile phone, so that no new hardware is required and the mobile terminal according to the present invention is realized at low cost. can do.

Embodiment 4
A fourth embodiment according to the present invention will be described. The mobile terminal 4 shown in FIG. 8 further includes a position notification unit 106 in addition to the configuration of the mobile terminal 1 shown in FIG.

  The position notification unit 106 is, for example, a GPS (Global Positioning System), acquires position information of the mobile terminal 4, and notifies the position information of the mobile terminal 4 to a preset notification destination. Since other configurations are the same as those of the mobile terminal 1, description thereof is omitted.

  Subsequently, an operation example of the mobile terminal 4 according to the present embodiment will be described. The basic operation is the same as the operation described in the flowchart of FIG. When the use of information is locked by the information restriction unit 103, it is a case where the state determination unit 102 determines that it is in the take-out state, so there is a possibility that the portable terminal 4 may be lost. Accordingly, the position notification unit 106 acquires and notifies the position based on the information use restriction operation of the information restriction unit 103. The notification destination may be set by a user such as a PC (Personal Computer) at the user's home.

  In addition, the position notification unit 106 may acquire and notify the position information of the mobile terminal 4 after a predetermined time after the information restriction unit 103 restricts the use of information. Furthermore, the position notification unit 106 may be operated only when the impact count is equal to or greater than the predetermined number and when the fall level acceleration is detected, that is, when the state determination unit 102 determines that the drop is being taken out.

  As described above, by using the mobile terminal 4 according to the present embodiment, the user can immediately confirm the lost or stolen position of the mobile terminal 4 while protecting the data stored in the mobile terminal 4. To find out.

Embodiment 5
A fifth embodiment according to the present invention will be described. The mobile terminal 5 shown in FIG. 9 further includes a warning unit 107 in addition to the configuration of the mobile terminal 1 shown in FIG.

  When the acceleration detected by the acceleration detection unit 101 is equal to or higher than the drop level and the state determination unit 102 determines that the mobile terminal 5 is in the fall state, the warning unit 107 sounds a warning sound that informs the user of the drop. . Moreover, you may make it sound a warning sound only in the case of the fall in taking out. Since other configurations and operations are the same as those of the mobile terminal 1, description thereof is omitted.

  Thereby, when the portable terminal 5 falls, a user can be notified and loss can be prevented beforehand.

Embodiment 6
A sixth embodiment according to the present invention will be described. The mobile terminal 6 shown in FIG. 10 further includes an information erasure unit 108 and a time detection unit 109 in addition to the configuration of the mobile terminal 1 shown in FIG.

  The information erasure unit 108 erases information stored in the mobile terminal 6. The time detection unit 109 detects an elapsed time after the information restriction unit 103 starts operating. Since other configurations are the same as those of the mobile terminal 1, description thereof is omitted.

  The information erasure unit 108 erases the data stored in the mobile terminal 6 when the time detection unit 109 detects that a certain time has elapsed since the information restriction unit 103 restricted the use of information. The certain time may be set by the user. In addition, when the lock by the information restriction unit 103 is based on the drop determination of the state determination unit 102, based on the take-out determination, or on the basis of the drop determination during take-out, the portable terminal is configured to delete the information only Six users may be able to select.

  Thereby, the security can be improved as compared with the lock function that restricts the use of data stored in the mobile terminal 6.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.

1, 2, 4 to 6 Mobile terminal 3 Mobile phone 11 Information processing unit 12 Acceleration sensor unit 13 Data storage unit 14 Program storage unit 15 Input unit 16 Output unit 17 Communication function unit 101 Acceleration detection unit 102 State determination unit 103 Information restriction unit 104 Detection start unit 105 Detection stop unit 106 Position notification unit 107 Warning unit 108 Information erasure unit 109 Time detection unit

Claims (18)

Acceleration detecting means for detecting acceleration generated in the mobile terminal;
Based on the acceleration detected by the acceleration detection means, state determination means for determining whether or not the user of the mobile terminal has walked and carried the mobile terminal in advance for a predetermined distance;
Information limiting means for limiting use of information stored in the portable terminal when the state determining means determines that the user has walked and taken out the predetermined distance;
A mobile terminal comprising:   The state determination means counts the number of times acceleration detected above the walking level is detected among the accelerations detected by the acceleration detection means, and if the counted number exceeds a predetermined number, the user The mobile terminal according to claim 1, wherein the mobile terminal is determined to be taken out while walking. The state determination means counts the number of times the acceleration detected by the acceleration detection means is detected as an acceleration greater than the walking level and less than the fall level. If the counted number exceeds a predetermined number, the user It is determined that the predetermined distance has been taken by walking,
If acceleration above the fall level is detected, it is further determined that the mobile terminal has fallen,
In addition to determining that the user has walked and taken out the predetermined distance, the information restriction unit stores the information in the mobile terminal even when the state determination unit determines that the mobile terminal has dropped. The portable terminal according to claim 1, wherein use of the information is restricted. Acceleration detecting means for detecting acceleration generated in the mobile terminal;
Based on the acceleration detected by the acceleration detection means, it is determined whether or not the user of the mobile terminal has walked and taken out the mobile terminal for a predetermined distance, and whether or not the mobile terminal has fallen. State determination means to perform,
An information restriction that restricts use of information stored in the mobile terminal when the state determination means determines that the user has walked and taken out the predetermined distance and the mobile terminal has fallen Means,
With
The state determination means counts the number of times the acceleration detected by the acceleration detection means is detected as an acceleration greater than the walking level and less than the fall level. If the counted number exceeds a predetermined number, the user It is determined that the predetermined distance has been taken by walking,
A mobile terminal that determines that the mobile terminal has dropped when an acceleration equal to or greater than the fall level is detected.   The portable terminal as described in any one of Claims 1-4 further provided with the detection start means which makes the said acceleration detection means start the detection of an acceleration based on operation of the said portable terminal.   The mobile terminal according to any one of claims 1 to 5, further comprising a detection stop unit that causes the acceleration detection unit to stop detecting an acceleration based on an operation of the mobile terminal.   The portable terminal according to any one of claims 1 to 6, further comprising a position notification unit that acquires position information of the portable terminal and notifies a predetermined notification destination according to execution of the information restriction unit.   The portable terminal according to any one of claims 1 to 7, further comprising warning means for sounding a warning sound based on the acceleration detected by the acceleration detection means. Time detection means for counting time according to execution of the information control means;
Based on the time counted by the time detecting means, information erasing means for erasing information stored in the portable terminal;
The mobile terminal according to any one of claims 1 to 8, further comprising: Detecting acceleration generated in the mobile device;
Determining whether or not the user of the mobile terminal has walked and taken out the mobile terminal in a predetermined distance based on the detected acceleration;
Limiting the use of information stored in the mobile terminal when it is determined that the user has walked and taken out the predetermined distance;
A method for controlling a portable terminal comprising:   The step of determining whether or not the user has walked and taken out the predetermined distance counts the number of times the acceleration above the walking level is detected among the detected accelerations, and the number of times the acceleration above the walking level is detected is predetermined. The method for controlling a portable terminal according to claim 10, wherein when the number of times is exceeded, it is determined that the user has taken the predetermined distance by walking. Further comprising the step of determining whether the mobile terminal has fallen;
The step of determining whether or not the predetermined distance has been walked and taken out counts the number of times acceleration detected between the walking level and the fall level is detected among the detected accelerations,
If the counted number exceeds the predetermined number, it is determined that the user has taken the predetermined distance by walking,
The step of determining whether or not the mobile terminal has fallen determines that the mobile terminal has fallen if acceleration equal to or greater than the fall level is detected,
The step of restricting the use of the information is stored in the portable terminal when it is determined that the user has fallen in addition to the case where it is determined that the user has walked and taken out the predetermined distance. The method for controlling a portable terminal according to claim 10, wherein use of the information is restricted. Detecting acceleration generated in the mobile device;
Determining whether or not the user of the mobile terminal has walked and taken out the mobile terminal in a predetermined distance based on the detected acceleration;
Determining whether the mobile terminal has fallen;
When it is determined that the user has walked and taken out the predetermined distance, and the mobile terminal has been dropped, the step of limiting the use of information stored in the mobile terminal,
The step of determining whether or not the predetermined distance has been walked and taken out counts the number of times acceleration detected between the walking level and the fall level is detected among the detected accelerations,
If the counted number exceeds the predetermined number, it is determined that the user has taken the predetermined distance by walking,
The step of determining whether or not the mobile terminal has fallen is a control method for a mobile terminal that determines that the mobile terminal has fallen if an acceleration equal to or higher than the fall level is detected.   The method for controlling a mobile terminal according to claim 10, further comprising a step of starting detection of the acceleration based on an operation of the mobile terminal.   The method for controlling a mobile terminal according to any one of claims 10 to 14, further comprising a step of stopping the detection of the acceleration based on an operation of the mobile terminal.   The method according to any one of claims 10 to 15, further comprising a step of acquiring position information of the mobile terminal and notifying a predetermined notification destination when use of information stored in the mobile terminal is restricted. Control method of mobile terminal.   The method for controlling a mobile terminal according to any one of claims 10 to 16, further comprising a step of causing the mobile terminal to sound a warning sound based on the detected acceleration. Counting the time when use of the information stored in the mobile terminal is restricted; and
Erasing information stored in the mobile terminal when the counted time exceeds a predetermined time; and
The control method of the portable terminal as described in any one of Claims 10-17 further provided.

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