JP4324915B2 - Portable terminal device and remote operation method thereof - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal device, and in particular, a portable terminal device that locks and unlocks (ie, executes / cancels key lock) by remote operation from another telephone when it is away from the owner due to loss or theft. And its remote operation method.

Cellular phone, PHS (Personal
Mobile communication devices (hereinafter collectively referred to as mobile terminal devices) such as Handyphone System (PDA) and Personal Digital Assistant (PDA) are a number of base stations having a relatively narrow service area. Via the wireless communication line, voice and data are transmitted and received with other terminal devices. Such portable terminal devices are currently widely used as portable communication means because they are smaller, lighter and higher in performance and relatively inexpensive.

  However, such a portable terminal device has a potential danger of being lost or stolen due to carelessness or an accident of the user (user or owner). Such loss or theft of the mobile terminal device is registered or stored inside the mobile terminal device in addition to the loss that the mobile terminal device is used by others and the usage fee is charged to the original owner. There is a risk that personal data (hereinafter referred to as personal information) such as address book, calendar, bank account number, passport number and driver's license number will be leaked.

  Various techniques for preventing the above-described loss should be researched and disclosed in the event that the portable terminal device is lost. The mobile phone number and personal identification code of the mobile phone that may be allowed to lock and release the electronic lock are held in association with the internal memory, and when the call is received from the external mobile phone by the internal determination device, the mobile phone of the caller An electronic lock system from a remote location is disclosed that determines whether or not the telephone number and the transmitted code are identical to those stored in the memory, and if they match, the electronic lock is locked and released. (For example, refer to Patent Document 1). Also, if the caller telephone number included in the incoming signal sent via the base station matches the telephone number registered in advance as a lock processing telephone number in the internal memory, A mobile phone with a dial / data lock function that performs lock processing to prevent or prevent leakage of personal information stored in a memory is disclosed (for example, see Patent Document 2). Furthermore, an external dial lock / data lock system that executes / releases lock by authentication by a telephone operator of a cellular phone carrier or automatic voice guidance is disclosed (for example, see Patent Document 3).

Japanese Unexamined Patent Publication No. 2000-2029 (page 3, FIG. 1) Japanese Unexamined Patent Publication No. 2000-151798 (5th page, FIG. 1) JP 2002-118876 A (page 2-3, FIG. 1)

  However, the conventional techniques including those described above have the following problems. That is, in the service for locking the call operation by remote operation, only the call from a previously registered telephone number can be locked, and the unlock operation is also a password input from this terminal. In the case of loss or theft, it is important for the above-mentioned danger prevention to immediately lock the mobile terminal device. However, if it is impossible to make a call from the registered phone number due to time and place restrictions or forgetting the registered phone number, the lock operation is impossible and the phone is temporarily locked. Even if it becomes, there is a possibility that the third party who has acquired this terminal may release the lock by means such as guessing the password.

  Further, since the solution as described in Patent Document 3 described above executes / releases the lock by authentication by the telephone operator of the mobile phone carrier or automatic voice guidance, a dedicated system for locking the mobile phone in the carrier. Is required.

  In order to solve the above-described problems, the mobile terminal device and the remote operation method thereof according to the present invention employ the following characteristic configuration.

(1) Voice and data are transmitted / received to / from other terminal devices via a base station via a wireless communication line, and the owner gives instructions from other terminal devices when he / she is away from the owner due to loss or theft In a portable terminal device having a lock function to stop the key operation function by
A communication control unit that receives a call from another terminal device and extracts a caller number and a password; a user setting unit that stores a password input in advance by the owner; and the extracted password and the user setting A portable terminal device comprising: a key lock control unit that performs a lock operation by comparing passwords set in the unit and performs an unlock operation based on a caller number stored at the time of the lock operation.

  (2) The key lock control unit includes a caller number check unit, stores the caller telephone number extracted by the communication control unit at the time of the lock operation, and also stores the caller number based on the stored caller number. The mobile terminal device according to (1), wherein authentication of a caller during a lock operation is performed.

  (3) The mobile terminal according to (1) or (2), wherein when receiving a call from the other terminal device, the key lock control unit transmits a message prompting the user of the terminal device to input a password. apparatus.

  (4) The mobile terminal device according to (3), wherein the key lock control unit includes a password input waiting timer and determines whether or not a password is input within a predetermined time from a password input instruction.

(5) A remote operation method of a mobile terminal device in which a lock operation or an unlock operation is performed from another terminal device in order to prevent misuse of the mobile terminal device left from the owner due to loss or theft or leakage of personal data In
In response to a call from the other terminal device, setting a password in advance in the mobile terminal device, extracting and storing a caller ID of the call from another terminal device received by the mobile terminal device Prompting the other terminal device to input a password, checking whether the preset password matches a password transmitted from the other terminal device, and the caller stored at the time of the lock operation Checking the match between the caller number and the caller number of the call from the other terminal device , performing the lock operation based on the check result of the password, and based on the check result of the caller number A method for remotely operating a portable terminal device that performs the unlocking operation.

  (6) The portable terminal device checks a waiting time for inputting a password from the other terminal device, and enables the lock or unlock operation only when the password is input within a predetermined time. 5) The remote operation method of the portable terminal device.

  According to the portable terminal device and the re-mode operation method of the present invention, the following remarkable practical effects can be obtained. In other words, since the key lock operation and unlock operation authentication by remote operation is performed by the caller number, it is not necessary to build a special system in the mobile phone communication carrier, and can be realized easily and inexpensively. .

  In addition, since only the terminal device (telephone) that has performed the lock operation can perform the unlock operation, it is not necessary to register the number of the terminal device (telephone) that can be locked in advance, and the operation is simple. Not only that, but when you notice a loss or theft, you can quickly lock by borrowing any nearby terminal device that has a caller ID notification function, such as your work phone or your friend's mobile phone. It is possible to prevent the misuse of personal digital assistants or the leakage of personal information, and it is not necessary to search for registered telephone numbers or to keep track of memory. It is possible to minimize the possibility of Furthermore, since the password input time is limited by the password input waiting timer, it is possible to prevent an unlock operation by a third party by analogizing the password.

  Hereinafter, the configuration and operation of a preferred embodiment of the portable terminal device and the remote operation method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a functional block diagram showing the configuration of a preferred embodiment of a portable terminal device according to the present invention. As shown in FIG. 1, the mobile terminal device 10 includes a communication control unit 20, a key lock control unit 30, a user setting unit 40, an antenna 50, and a key 60.

  Further, the communication control unit 20 includes a caller number extraction unit 21 and a password extraction unit 22. The key lock control unit 30 includes a caller number check unit 31, a password check unit 32, and a password input waiting timer 33. In addition, the user setting unit 40 includes password setting means 41. Further, FIG. 1 shows a cellular phone carrier 11 and a telephone 13.

  The main functions of the main components of the mobile terminal device 10 will be described. The communication control unit 20 controls a voice call. The key lock control unit 30 executes a key operation lock / release process. The caller number extraction means 21 of the communication control unit 20 recognizes and extracts a caller number when a voice call is received. The password extraction unit 22 extracts a password for key lock processing from data flowing during voice communication. The caller number check means 31 of the key lock control unit 30 stores / verifies the caller number. The password check unit 32 collates the password extracted by the password extraction unit 22 with the password set by the password setting unit 41 of the user setting unit 40.

  Next, an operation in the case where the mobile terminal device 10 has left the owner's hand due to reasons such as loss or theft will be described with reference to the operation explanatory diagrams (or sequence diagrams) in FIGS.

First, it is assumed that the mobile terminal device 10 is in an initial state (hereinafter referred to as Status 1). A lock operation (hereinafter referred to as Event 1) from an arbitrary telephone set 13 is performed. Since the telephone 13 is an arbitrary telephone, the telephone 13 may be a fixed telephone nearby or a mobile phone owned by a friend who is present. With this Event 1, the # 1 caller number is extracted by the caller number extraction means 21 of the communication control unit 20 and stored in the caller number check 31. Next, a password input request message is displayed to the # 2 caller or a voice message requesting password input is sent to prompt the user to input a password. Then, the password input waiting timer 33 of the # 3 key lock control unit 30 starts, and shifts to a password input waiting state (hereinafter referred to as Status 2).

  Here, it is assumed that the telephone 13 is in a state in which a caller ID can be notified to a called party (receiving terminal, here, the mobile terminal device 10). As a specific example of the lock operation, an operation such as a plurality of calls within a certain time or a call continuing for a certain time or more can be considered. Also, the specific value of the password input waiting timer 33 is set to a value that seems to be optimal for each system, and detailed description thereof is omitted here.

  Next, Status2 described above will be described. It is assumed that a password input (hereinafter referred to as “Event 2”) is performed by a key operation of the telephone 13 before a time set in advance by the password input waiting timer 33 elapses, that is, before a timeout occurs. First, the # 1 password is checked. That is, the password extraction unit 22 of the communication control unit 20 extracts the password input from the telephone set 13 and passes the extracted password to the password check unit 32 of the key lock control unit 30.

  The password check unit 32 of the key lock control unit 30 performs collation with the password set in advance by the password setting unit 41 of the user setting unit 40. If this collation result is OK (that is, both match), a # 2 key lock process described later is executed, and the process proceeds to an unlock operation wait (hereinafter referred to as Status 3). On the other hand, if the collation result is NG (that is, they do not match), the process returns to Status 2 and waits for re-input of the password. When the password input waiting timer 33 times out without inputting a password from the telephone 13 (hereinafter referred to as Event 3), the communication lines of the telephone 13 and the mobile terminal device 10 are disconnected, and the Status 1 described above Return to. Here, “execute key lock” means that the key 60 of the mobile terminal device 10 cannot be operated at all, that is, the mobile terminal device 10 is disabled.

  Next, Status 3 will be described. When unlock operation (Event1) occurs, # 1 caller number check is executed. That is, the caller number check unit 31 of the key lock control unit 30 collates the caller number stored inside with the caller number extracted by the caller number extraction unit 21 of the communication control unit 20. If the collation result is OK, a # 2 password input request message is displayed or a voice message requesting the telephone 13 to input a password flows. Then, the # 3 password input waiting timer 33 is started, and the state shifts to a password input waiting state (hereinafter referred to as Status 4). On the other hand, if the collation result is NG, the connected communication line is disconnected and the status returns to Status 3 described above. In this specific embodiment, the unlocking operation is the same as the locking operation.

  Next, Status4 will be described. If password input (Event 2) is performed by key operation of the telephone set 13 before the password input waiting timer 33 of the key lock control unit 30 times out, password verification is performed in the same manner as described above. If the collation result is OK, the key lock is released and the process proceeds to a lock operation wait (Status 1). On the other hand, if the collation result is NG, the process returns to Status 4 again and waits for password input.

  Here, when the password waiting timer 33 times out without entering a password (Event 3), the connected communication line is disconnected and the status returns to Status 3 described above. Note that although the caller number is collated in Status 3, this means that only the telephone 13 that has performed the lock operation can perform the unlock operation.

  The configuration and operation of the preferred embodiment of the present invention have been described in detail above. However, such an example is merely an example of the present invention and does not limit the present invention. Those skilled in the art will readily understand that various modifications and changes can be made without departing from the spirit of the present invention. For example, in the above-described preferred embodiment, when the result of the password check is NG, the communication line may be disconnected to return to the lock operation wait (Status 1) or the unlock operation wait (Status 4). In addition, by defining the lock operation and the unlock operation as different operations, it is possible to provide more complicated but higher security. Further, the unlocking operation may omit only the password input and check and use only the caller number at the time of the locking operation, that is, the telephone number of the telephone.

It is a functional block diagram which shows the structure of the suitable Example of the portable terminal device by this invention. It is operation | movement explanatory drawing of the portable terminal device shown in FIG.

Explanation of symbols

10 mobile terminal device 11 mobile phone operator 13 telephone (other terminal device)
20 Communication Control Unit 21 Caller Number Extracting Unit 22 Password Extracting Unit 30 Key Lock Control Unit 31 Caller Number Checking Unit 32 Password Checking Unit 33 Password Input Waiting Timer 40 User Setting Unit 41 Password Setting Unit 50 Antenna

Claims (6)

Voice and data are transmitted / received to / from other terminal devices via a wireless communication line via a base station, and when the owner leaves the owner due to loss or theft, the owner operates keys according to instructions from other terminal devices. In a mobile terminal device having a lock function to stop the function,
A communication control unit that receives a call from another terminal device and extracts a caller number and a password; a user setting unit that stores a password input in advance by the owner; and the extracted password and the user setting And a key lock control unit that performs a lock operation by comparing passwords set in the unit and performs an unlock operation based on a caller number stored at the time of the lock operation.   The key lock control unit includes a caller number check means, stores the caller telephone number extracted by the communication control unit at the time of the lock operation, and at the time of the unlock operation based on the stored caller number The mobile terminal device according to claim 1, wherein authentication of a caller is performed.   3. The mobile phone according to claim 1, wherein the key lock control unit transmits a message prompting a user of the terminal device to input a password when receiving a call from the other terminal device. 4. Terminal device.   The portable terminal device according to claim 3, wherein the key lock control unit includes a password input waiting timer, and determines whether or not a password is input within a predetermined time from a password input instruction. In a remote operation method of a mobile terminal device in which a lock operation or an unlock operation is performed from another terminal device in order to prevent misuse of the mobile terminal device left from the owner due to loss or theft or leakage of personal data,
In response to a call from the other terminal device, setting a password in advance in the mobile terminal device, extracting and storing a caller ID of the call from another terminal device received by the mobile terminal device Prompting the other terminal device to input a password, checking whether the preset password matches a password transmitted from the other terminal device, and the caller stored at the time of the lock operation Checking the match between the caller number and the caller number of the call from the other terminal device , performing the lock operation based on the check result of the password, and based on the check result of the caller number A method for remotely operating a portable terminal device, wherein the unlocking operation is performed.   The portable terminal device checks a waiting time for inputting a password from the other terminal device, and enables the lock or unlock operation only when the password is input within a predetermined time. The remote operation method of the portable terminal device according to claim 5.

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