JP2007311864A - Portable communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable communication terminal which can protect personal information appropriately. <P>SOLUTION: The portable communication terminal includes a CPU. When lock execution conditions are satisfied, the CPU sets the operation mode in a mode for inhibiting browsing of personal information stored in a flash memory. Upon receiving a release code of a key input device under a state where the browsing inhibition mode is set, the CPU sets the operation mode in a mode for permitting browsing of personal information stored in a flash memory. When unlocking conditions are satisfied under a state where the browsing inhibition mode is set, the CPU sets the operation mode again in a browsing permission mode. A decision is made to clear whether erasure of the personal information stored in the flash memory is permitted or not in relation to the processing for setting limited release conditions. If the decision results are affirmative, the personal information stored in the flash memory is erased. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mobile communication terminal, and more particularly to a mobile communication terminal that sets a key operation to an invalid state in response to a remote operation, for example.

An example of a conventional device of this type is disclosed in Non-Patent Document 1. According to this conventional technique, it is considered that the remote auto-lock operation has been performed when the incoming notification having the specified sender information is generated a specified number of times within the specified period. At this time, the key operation is set to the locked state (invalid state) and the personal information stored in the memory is erased. As a result, a situation where information stored in the mobile communication terminal is leaked when the mobile communication terminal is lost is avoided.
“W41SAbySANYO Instruction Manual”, KDDI CORPORATION, OKINAWA CELLULAR TELEPHONE COMPANY, January 2006, p. 286-287

  However, in the prior art, even if the lost mobile communication terminal returns to the owner, the personal information no longer exists after the remote auto-lock operation. In this respect, the prior art cannot be said to protect personal information accurately.

  Therefore, a main object of the present invention is to provide a mobile communication terminal capable of appropriately protecting personal information.

  The portable communication terminal (10) according to the first aspect of the present invention provides a browsing prohibiting means for setting the operation mode to a browsing prohibiting mode for prohibiting browsing of personal information stored in the memory when the first incoming call condition is satisfied (S59). First browsing permission means (26, S81) that sets the operation mode to a browsing permission mode that permits browsing of personal information stored in the memory (30) when a specific operation is accepted in a state where the browsing prohibition mode is set. ) Second browsing permission means (S81) for setting the operation mode to the browsing permission mode when the second incoming condition is satisfied in the state where the browsing prohibition mode is set, and erasure of personal information stored in the memory is permitted. Determining means (S75, S77) for determining whether or not the first browsing permission means is set, and if the determination result of the determining means is affirmative, the personal information stored in the memory is erased First erasing means (S79) is provided.

  When the first incoming condition is satisfied, the browsing prohibiting means sets the operation mode to a browsing prohibiting mode that prohibits browsing personal information stored in the memory. When a specific code is received in a state in which the browsing prohibition mode is set, the first browsing permission means sets the operation mode to a browsing permission mode that permits browsing of personal information stored in the memory. When the second incoming call condition is satisfied in the state in which the browsing prohibition mode is set, the second browsing permission unit sets the operation mode to the browsing permission mode. Whether or not the deletion of the personal information stored in the memory is permitted is determined by the determination unit in connection with the setting process of the first browsing permission unit. The first erasure unit erases the personal information stored in the memory when the determination result of the determination unit is affirmative.

  Therefore, if the mobile communication terminal that is in the hands of a third party is a terminal for which browsing prohibition mode is set and deletion of personal information is not permitted, the mobile communication terminal enters the browsing permission mode in response to a specific operation of the third party. The personal information stored in the memory leaks due to the transition.

  On the other hand, if the mobile communication terminal that is in the hands of a third party is a mobile communication terminal for which browsing prohibition mode is set and deletion of personal information is permitted, browsing permission mode in response to a specific operation of the third party However, the personal information stored in the memory is deleted. Thereby, leakage of personal information is prevented.

  When the mobile communication terminal in which the browsing prohibition mode is set and the deletion of personal information is allowed to return to the original owner's hand, the owner performs a remote operation that satisfies the second incoming condition, The operation mode can be changed to the browsing permission mode while avoiding the deletion of personal information. As a result, personal information is accurately protected.

  A mobile communication terminal according to the invention of claim 2 is dependent on claim 1, and includes a lock processing means (S53) for executing a lock process when set in the browse prohibit mode, and a lock when the browse permission mode is set. Further provided is a lock release means (S73) for executing the release processing.

  According to the invention of claim 2, when the lock processing is executed by the lock processing means, the key operation is invalidated, while when the lock release processing is executed by the lock releasing means, the key operation is validated. . As a result, unauthorized use during the browsing prohibit mode can be prevented.

  The mobile communication terminal according to the invention of claim 3 is dependent on claim 1 or 2, and further comprises assigning means (S21) for assigning an identifier to a desired call source, wherein each of the first incoming call condition and the second incoming call condition is: It is defined by the source information corresponding to the source to which the identifier is assigned, the number of incoming calls information assigned to the source information, and the specified time assigned to the source information. This makes it possible to appropriately set the operation mode transition.

  The portable communication terminal according to the invention of claim 4 is dependent on claim 3 and is provided with a measuring means (24t) for measuring the time elapsed from the first incoming call from the source to which the identifier is assigned, and the browsing permission mode is set. Whether the number of incoming calls from the source to which the identifier has been assigned has reached the number of incoming calls corresponding to the specified incoming call count information before the specified time corresponding to the specified time information elapses while the time measured by the measurement means A first discriminating means (S51) for discriminating whether or not an outgoing call is assigned with an identifier until the designated time corresponding to the designated time information elapses when the time measured by the measuring means is set in the browsing prohibit mode. Second discriminating means (S71) for discriminating whether or not the original number of incoming calls has reached the number of incoming calls corresponding to the designated incoming call count information is further provided.

  According to the invention of claim 4, if the determination result of the first determination means is affirmative, the first incoming condition is satisfied, and the operation mode shifts to the browsing permission mode. If the determination result of the first determination means is negative, the first incoming call condition is not satisfied and the operation mode is maintained in the browsing prohibition mode. If the determination result of the second determination means is affirmative, the second incoming call condition is satisfied, and the operation mode transitions to the browsing permission mode. If the determination result of the second determination means is negative, the second incoming condition is not satisfied, and the operation mode maintains the browsing permission mode. Therefore, the operation mode transitions to the browsing prohibition mode when the first determination means is affirmative, and transitions to the browsing permission mode when the second determination means is affirmative.

  The mobile communication terminal according to the invention of claim 5 is dependent on any one of claims 1 to 4 and further comprises second erasure means (S57) for erasing personal information stored in the memory in response to the browsing prohibit mode. . As a result, the personal information is deleted when the mode is changed to the browsing prohibition mode, and leakage of the personal information is prevented.

  The mobile communication terminal according to the invention of claim 6 is dependent on any one of claims 1 to 5 and further comprises output means (S91) for outputting an image prior to the erasing process of the first erasing means. As a result, it is possible to prevent the personal information from being accidentally deleted.

  The operation control program according to the invention of claim 7 prohibits the processor (24) provided in the mobile communication terminal (10) from browsing personal information stored in the memory with the operation mode when the first incoming condition is satisfied. Browsing prohibition step (S59) to set the browsing prohibition mode to be performed, browsing permission to permit browsing of personal information stored in the memory (30) when the specific operation is accepted when the browsing prohibition mode is set First browsing permission step (26, S81) for setting the mode, and second browsing permission step (S81) for setting the operation mode to the browsing permission mode when the second incoming condition is satisfied in the state where the browsing prohibition mode is set. ), A discriminating step (S75, S77) for discriminating whether or not the deletion of the personal information stored in the memory is permitted in relation to the setting process of the first browsing permission means, and the discrimination result of the discriminating means is affirmative When First to execute the removing step (S79) for erasing the personal information stored in the memory.

  The operation control method according to the invention of claim 8 is an operation control method of the portable communication terminal (10), wherein when the first incoming call condition is satisfied, the operation mode prohibits browsing of personal information stored in the memory. Browsing prohibition step (S59) to set to prohibited mode, and when browsing operation is accepted, when the specific operation is accepted, the operation mode is changed to browsing permission mode that allows browsing of personal information stored in the memory (30). A first browsing permission step (26, S81) for setting, a second browsing permission step (S81) for setting the operation mode to the browsing permission mode when the second incoming condition is satisfied in the state where the browsing prohibition mode is set, A determination step (S75, S77) for determining whether or not deletion of personal information stored in the memory is permitted in relation to the setting process of the first browsing permission means, and the determination result of the determination means is affirmative When in memory First erase step of erasing the 憶 personal information including (S79), an operation control method.

  As for claims 7 and 8, as in the invention of claim 1, when the mobile communication terminal that is in the hands of a third party is a terminal in which the browsing prohibition mode is set and the deletion of personal information is not permitted, The personal information stored in the memory leaks due to the transition to the browsing permission mode in response to a specific operation of a third party. On the other hand, if the mobile communication terminal that is in the hands of a third party is a mobile communication terminal for which browsing prohibition mode is set and deletion of personal information is permitted, browsing permission mode in response to a specific operation of the third party However, the personal information stored in the memory is deleted. Thereby, leakage of personal information is prevented. When the mobile communication terminal in which the browsing prohibition mode is set and the deletion of personal information is allowed to return to the original owner's hand, the owner performs a remote operation that satisfies the second incoming condition, The operation mode can be changed to the browsing permission mode while avoiding the deletion of personal information. As a result, personal information is accurately protected.

  According to the present invention, when the mobile communication terminal that is in the hands of a third party is a telephone number that is set in the browsing prohibition mode and whose personal information is permitted to be deleted, in response to a specific operation of the third party. Although the browsing permission mode is set, the personal information stored in the memory is deleted. As a result, leakage of personal information is prevented. When the mobile communication terminal in which the browsing prohibition mode is set and the deletion of personal information is allowed to return to the original owner's hand, the owner performs a remote operation that satisfies the second incoming condition, The operation mode can be changed to the browsing permission mode while avoiding the deletion of personal information. As a result, personal information is accurately protected.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

  Referring to FIG. 1, a mobile communication terminal 10 according to an embodiment of the present invention includes an antenna 12. The modulated audio signal (high frequency signal) sent from the other party is captured by the antenna 12, demodulated by the radio circuit 14, and decoded by the signal processing circuit 16. The audio data decoded by the signal processing circuit 16 is converted into an analog audio signal by the AD / DA conversion circuit 18, and the converted audio signal is output from the speaker 20. When an incoming call operation is performed by the key input device 26, a call can be made.

  On the other hand, when a call operation for a call is performed by the key input device 26, the CPU 24 transmits a call signal to the other mobile terminal (not shown) through the signal processing circuit 16, the radio circuit 14 and the antenna 12. On the other hand, when the other party performs an incoming call operation, a call can be made.

  The voice signal taken in by the microphone 22 after the call is ready is converted into voice data which is a digital signal by the AD / DA conversion circuit 18. The converted audio data is subjected to coding processing by the signal processing circuit 16 and further subjected to modulation processing by the radio circuit 14. The modulated audio signal generated by the radio circuit 14 is transmitted from the antenna 12.

  When a call end operation is performed by the key input device 26 while a call is being made with the other party in this way, the CPU 24 controls the signal processing circuit 16 and the radio circuit 14 to call the other party. Send a call end signal. After transmitting the call end signal, the CPU 24 ends the call process. The CPU 24 also ends the call process when a call end signal is received from the other party first. Thus, the call function is realized.

  The mobile communication terminal 10 of this embodiment has a remote lock function. When the remote lock setting mode is selected by the key input device 26, the CPU 24 activates the remote lock setting task and gives a first screen display command to the display device 28. The display device 28 outputs the first screen V1 in the manner shown in FIG. When the remote lock function is activated by the key input device 26, the CPU 24 then gives a second screen display command to the display device 28. The display device 28 outputs the second screen V2 in the manner shown in FIG.

  When the “valid number” is selected during display of the second screen V2 (see FIG. 2B), the CPU 24 issues a third screen display command and flushes a plurality of transmission sources assigned with identifiers. Read from the memory 30. The plurality of read sources are output to the display device 28. The display device 28 outputs the third screen V3 in the manner shown in FIG.

  The flash memory 30 stores a management table 30t shown in FIG. According to FIG. 3, a plurality of transmission sources have a plurality of registration numbers. Is set as an effective number in the management table 30t. A designated time (minutes) and a designated number of incoming calls are assigned to each of the set effective numbers.

  Specifically, the registration No. In “1”, “123-345-0789” is set as the transmission source, and the registration No. In “2”, “222-333-4444” is set as the transmission source, and the registration No. In “3”, “555-000-1111” is set as the transmission source, and the registration No. In “4”, “public telephone” is set as the caller. “123-345-0789” is assigned a designated time “5” and a designated number of incoming calls “3”. “222-333-4444” is assigned a designated time “15” and a designated number of incoming calls “10”. A designated time “3” and a designated number of incoming calls “3” are assigned to “555-000-1111”. “Public phone” is assigned a designated time “10” and a designated number of incoming calls “5”.

  The valid number is selected from an address book (not shown) stored in the flash memory 30 or directly input. For registration of the valid number, a telephone number obtained from outgoing call history, incoming call history, mail information, etc. may be used.

  When a desired effective number is selected by the key input device 26 during display of the third screen V3 (see FIG. 2C), the CPU 24 issues a fourth screen display command. The display device 28 outputs the fourth screen V4 in the manner shown in FIG.

  When “specified time” is selected by the key input device 26, processing for setting the specified time is executed. Specifically, the designated time assigned to the selected effective number is read, and the display device 28 outputs the read designated time. When a desired designated time is input by the key input device 26, a numerical value according to information input by the key input device 26 is set to the designated time assigned to the selected effective number. When the cancel operation is performed by the key input device 26, the CPU 24 issues a second screen display command to the display device 28. The display on the display device 28 returns to the second screen V2 shown in FIG.

  When “designated number of incoming calls” is selected by the key input device 26, processing for setting the designated number of incoming calls is executed. Specifically, the designated number of incoming calls assigned to the selected effective number is read, and the display device 28 outputs the read designated number of incoming calls. When a desired designated number of incoming calls is input by the key input device 26, a numerical value according to the information input by the key input device 26 is set to the designated incoming number assigned to the selected effective number. When the cancel operation is performed by the key input device 26, the CPU 24 issues a second screen display command to the display device 28. The display on the display device 28 returns to the second screen V2 shown in FIG. Thus, the operation mode transition can be set appropriately.

  The lock execution condition is defined by a valid number, a specified time, and a specified number of incoming calls. When a remote operation that satisfies the lock execution condition is performed in the browsing permission mode, the operation mode transits to the browsing prohibition mode.

  Specifically, referring to FIG. 4, when there is an incoming call from one of the valid numbers registered in the management table 32t (for example, a public telephone), if the first incoming call from the public telephone occurs, the incoming call The count value CNT (4) indicating the number of times is set to “1”, and the timer 28t that manages the timer value TM (4) is reset and started. The designated time and designated number of incoming calls assigned to “public telephone” are “10” and “5”, respectively. Therefore, when the timer value TM (4) exceeds 10 minutes, an incoming call from the public telephone occurs four more times, and the lock execution condition is satisfied when the count value CNT (4) indicates “5”. . That is, if there is the number of incoming calls from the valid number within the designated time assigned to any valid number, it is determined that the lock execution condition is satisfied.

  At this time, the CPU 24 executes a lock process to invalidate the key operation. As a result, unauthorized use during the browsing prohibit mode can be prevented. In this way, the operation mode transitions to the browsing prohibition mode. In the browsing prohibit mode, the input information corresponding to the password using the key input device 26 is valid.

  FIG. 5 shows the operation when there is an incoming call from two valid numbers registered in the management table 30t. According to FIG. An incoming call from a public telephone assigned to “4” occurs at 12:00. At this time, the count value CNT (4) is set to “1”, and the timer 28t that manages the timer value TM (4) is reset and started. Incoming calls from public phones then occur at 12:02, 12:04, 12:06 and 12:08. The count value CNT (4) is updated to “2” at 12:02, updated to “3” at 12:04, updated to “4” at 12:06, and “5” at 12:08. Updated. The lock execution condition is satisfied when the count CNT (4) indicates “5”. On the other hand, registration no. An incoming call from the effective number “123-345-7890” assigned to “1” occurs at 12:05. At this time, the count value CNT (1) is set to “1”, and the timer 28t that manages the timer value TM (1) is reset and started. Incoming calls from the valid number “123-345-7890” then occur at 12:07 and 12:09. The count value CNT (1) is updated to “2” at 12:07.

  Here, since the lock execution condition is satisfied by the public telephone at 12:08, the count value CNT (1) is once reset. When an incoming call with the valid number “123-345-7890” occurs at 12:09, the count value CNT (1) is set to “1” and the timer 28t managing the timer value TM (1) is reset and Be started. That is, the lock execution condition is not satisfied by the incoming call from the valid number “123-345-7890”.

  The lock release condition has a first release condition and a second release condition. The first release condition is satisfied when a password input operation using the key input device 26 is performed as a main body operation in a state where the operation mode is the browsing prohibition mode. When the first release condition is satisfied, the operation mode transitions to the browsing permission mode. The second release condition is defined by a valid number, a specified time, and a specified number of incoming calls. When a remote operation that satisfies the second release condition is performed in the browsing permission mode, the operation mode transitions to the browsing prohibition mode.

  Specifically, referring to FIG. 6, when the first incoming call from the public telephone occurs, count value CNT (4) indicating the number of incoming calls is set to “1”, and timer value TM (4) is managed. The timer to reset is reset and started. When the timer value TM (4) exceeds 10 minutes, the incoming call from the public telephone occurs four more times, and the count value CNT (4) indicates “5”, the second release condition is satisfied. At this time, the CPU 24 executes a lock release process in order to validate the key operation. Thus, the operation mode transitions to the browsing permission mode. That is, if the number of incoming calls from the valid number is within the specified time assigned to any valid number, it is determined that the second release condition is satisfied.

  When “condition setting” is selected during display of the second screen V2 (see FIG. 2B), the CPU 24 issues a fifth screen display command to pay attention to the emergency erasure condition. The display device 28 outputs the fifth screen V5 in the manner shown in FIG.

  When “apply” is selected by the key input device 26 during the display of the fourth screen V5 in order to apply the emergency erasure condition, the emergency erasure flag Femergeny is set in the remote lock function setting information stored in the flash memory 30. Set to “1”. The personal information is deleted when the lock execution condition is satisfied.

  If “cancel” is selected by the key input device 26 during the display of the fifth screen V5 so that the emergency erasure condition is not applied, the CPU 24 next selects a sixth screen display command to pay attention to the unauthorized use prevention condition. Is issued. In accordance with this instruction, the display device 28 outputs the sixth screen V6 as shown in FIG.

  When “apply” is selected by the key input device 26 during the display of the sixth screen V6 in order to apply the unauthorized use prevention condition, the limited flag “Only” is set in the remote lock function setting information stored in the flash memory 30. Set to “1”. As a result, the personal information is erased when a body operation that satisfies the first use condition is applied while the unauthorized use prevention condition is applied. On the other hand, when the unauthorized use prevention condition is applied and a remote operation that satisfies the second release condition is performed, the personal information is retained.

  When “Cancel” is selected by the key input device 26 during the display of the sixth screen V6 so that the unauthorized use prevention condition is not applied, the limited flag “Only” in the setting information of the remote lock function stored in the flash memory 30 is displayed. Is set to “0”. As a result, a situation in which personal information is erased in response to a main body operation that satisfies the first release condition or a remote operation that satisfies the second release condition is avoided.

  When the remote lock function is invalidated by the key input device 26, the CPU 24 executes a reset process. That is, of the remote lock function setting information stored in the flash memory 30, each of the emergency deletion flag Femerency and the limit flag Only is set to “0”. This avoids a situation in which the operation mode is set from the browsing permission mode to the browsing prohibition mode in response to a remote operation that satisfies the lock execution condition. As a result, malfunction is prevented.

  When the lock execution condition is satisfied, the operation mode transitions from the browsing permission mode to the browsing prohibition mode. Here, when the emergency erasure condition is applied, the CPU 24 executes the lock process and the erasure process in the manner shown in FIG. The personal information stored in the flash memory 30 is quickly deleted in response to the setting of the browsing prohibit mode. Thereby, leakage of personal information is prevented.

  On the other hand, when the emergency erasure condition is not applied, the CPU 24 executes the lock process as shown in FIG. The personal information is held in the flash memory 30 regardless of the browsing prohibit mode. The browsing of personal information is prohibited in response to the browsing prohibit mode.

  When the unlock condition is satisfied, the operation mode transitions from the browsing prohibition mode to the browsing permission mode. Here, in the case where the unauthorized use prevention condition is applied, when a main body operation that satisfies the first release condition is performed, the CPU 24 executes the lock release process as shown in FIG. At this time, the CPU 24 considers that the unlocking condition has been illegally released by the operation of the main body and executes the erasure process. The personal information stored in the flash memory 30 is quickly deleted in response to the browsing permission mode. Thereby, leakage of personal information is prevented.

  When a remote operation that satisfies the second release condition is performed, the CPU 24 executes a lock release process in the manner shown in FIG. 8B. At this time, the CPU 24 considers that the unlocking condition has been normally released by this remote operation. The personal information is held in the flash memory 30 regardless of the browsing permission mode. The browsing of personal information is permitted in response to the browsing permission mode.

  On the other hand, when the unauthorized use prevention condition is not applied, the CPU 24 executes the unlocking process as shown in FIG. The personal information is held in the flash memory 30 regardless of the operation mode. As a result, a situation where personal information is accidentally deleted is avoided.

  In this way, if the emergency erasure condition is in the applied state, the personal information is quickly erased when the lock execution condition is satisfied. If the emergency erasure condition is not applicable, the unauthorized use prevention condition is noticed.

  If the unauthorized use prevention condition is not applicable, the personal information stored in the flash memory 30 is retained. Here, when the operation mode is the browsing prohibition mode, browsing of personal information is prohibited, and when the operation mode is the browsing permission mode, browsing of personal information is permitted.

  On the other hand, if unauthorized use prevention conditions are applied and a main unit operation that satisfies the first release condition is performed, personal information is promptly deleted when the first release condition is satisfied in order to prevent unauthorized use. Is done. In addition, when the unauthorized use prevention condition is applied and a remote operation that satisfies the second release condition is performed, the personal information stored in the flash memory 30 is retained. Here, when the operation mode is the browsing prohibition mode, browsing of personal information is prohibited, and when the operation mode is the browsing permission mode, browsing of personal information is permitted. In this way, personal information can be appropriately protected according to the owner's request.

  The CPU 24 is a multi-task CPU equipped with a multi-task OS such as μITRON, executes the control of the flowchart shown in FIG. 9 in relation to the operation of the mobile communication terminal 10, and relates to the remote lock setting mode. 10 and FIG. 11 is executed, the control of the flowchart shown in FIG. 12 is executed in relation to the browsing prohibition mode, and the flow shown in FIG. 13 is related to the browsing permission mode. The control in the figure is executed. The operation control program corresponding to this flowchart is stored in the flash memory 30.

  Referring to FIG. 9, initial setting is executed in step S1. At this time, the remote prohibition task is activated. In step S3, it is determined whether or not the remote lock setting mode by the key input device 26 has been selected. If the determination result is NO, other processing is executed in step S5. If the determination result is YES, a remote lock setting task is activated in step S7. When this remote lock setting task is activated, the process returns to step S3.

  According to FIG. 10, a first screen display command is issued to the display device 28 in step S11. As a result, the first screen V1 is displayed as shown in FIG. In step S13, it is determined whether or not the remote lock function is enabled. When the remote lock function is invalidated, a reset process is performed in step S15. Specifically, the emergency erasure flag Femergengy and the limited flag Only are set to “0”. When this process is completed, the remote lock setting task is terminated.

  When the lock function is validated, a second screen display command is issued to the display device 28 in step S17. As a result, the second screen V2 is displayed as shown in FIG. In step S 19, it is determined whether or not “valid number” has been selected by the key input device 26. When “effective number” is selected, an effective number setting process is executed in step S21. When this process is completed, the process returns to step S17. As a result, a desired effective number is set, and a specified time and a specified number of incoming calls assigned to the effective number are set.

  If “valid number” is not selected, it is determined whether or not “condition setting” is selected in step S23. When “condition setting” is selected, a condition setting process is executed in step S25, and when this process is completed, the process returns to step S17. If “condition setting” is not selected, it is determined whether or not an end operation has been performed by the key input device 26 in step S27. If the determination result is negative, the process returns to step S19, whereas if the determination result is affirmative, the remote lock setting task is terminated.

  The condition setting process in step S25 is executed according to a subroutine shown in FIG. In step S31, a fifth screen display command is issued to the display device 28. As a result, the fifth screen V5 is displayed in the manner shown in FIG. In step S33, it is determined whether or not “Apply” has been selected by the key input device. If “Apply” is selected, the emergency erase flag Femergeny is set to “1” in step S35, and the process returns to the upper layer routine. As a result, the personal information is erased when the lock execution condition is satisfied.

  If “cancel” is selected in step S33, the emergency deletion flag Femergeny is set to “0” in step S37, and a sixth screen display command is issued to the display device 28 in order to pay attention to the unauthorized use prevention conditions in step S39. . As a result, the sixth screen V6 is displayed as shown in FIG. In step S41, it is determined whether or not “Apply” has been selected by the key input device. When “Apply” is selected, the limited flag “Folly” is set to “1” in step S43. As a result, the personal information is erased when a body operation that satisfies the unauthorized use prevention condition and satisfies the unlocking condition is performed. On the other hand, when a remote operation satisfying the unauthorized use prevention condition and satisfying the unlocking condition is performed, the personal information is retained.

  If “cancel” is selected, the limited flag “Folly” is set to “0” in step S45. A situation in which personal information is erased in response to a main body operation that satisfies the first release condition or a remote operation that satisfies the second release condition is avoided. When the processes of step S43 and step S45 are completed, the process returns to the upper hierarchy routine.

  Referring to FIG. 12, the process waits until the lock execution condition is satisfied in step S51. If the lock execution condition is satisfied, the lock process is executed in step S53. In step S55, it is determined whether or not the emergency erasure flag Femergengy is “1”. If the emergency erase flag Femergency is “1”, it is determined that the personal information should be promptly erased, the personal information stored in the flash memory 30 is erased in step S55, and the process proceeds to step S57. If the emergency erasure flag Femergency is “0”, it is determined that erasure of personal information should be avoided, and lock processing is executed in step S57. In step S59, the browsing permission task is activated, and in step S61, the browsing prohibition task is terminated. As a result, the key operation becomes invalid and browsing of personal information stored in the flash memory 30 is prohibited.

  According to FIG. 13, in step S71, the process waits until the unlocking condition is satisfied. If the unlock condition is satisfied, the unlock process is executed in step S73. In step S65, it is determined whether or not the limit flag Only is “1”.

  If the limit flag Only is “0”, the process proceeds to step S81 in order to avoid a situation where personal information is deleted. If the limit flag Only is “1”, in order to prevent unauthorized use, it is determined in step S77 whether or not it has been released by a body operation that satisfies the first release condition. If a remote operation that satisfies the second release condition is performed, it is considered that the lock release condition has been normally released by the remote operation, and the process proceeds to step S81. On the other hand, if a main body operation that satisfies the first release condition is performed, it is considered that the unlocking condition has been illegally released by the main body operation, and an erasure process is executed in step S79. As a result, personal information stored in the flash memory 30 is quickly erased, and leakage of personal information is prevented.

  In step S81, the browsing prohibition task is activated, and in step S83, the browsing permission task is terminated. As a result, the key operation is validated and browsing of the personal information stored in the flash memory 30 is permitted.

  As will be understood from the above description, when the lock execution condition is satisfied, the CPU 24 sets the operation mode to a browsing prohibition mode that prohibits browsing personal information stored in the flash memory 30. When the release code of the key input device 26 is received in a state where the browsing prohibition mode is set, the CPU 24 sets the operation mode to a browsing permission mode that permits browsing of personal information stored in the flash memory 30. When the unlocking condition is satisfied in the state where the browsing prohibition mode is set, the CPU 24 also sets the operation mode to the browsing permission mode. Whether or not the deletion of the personal information stored in the flash memory 30 is permitted is determined by the CPU 24 in connection with the setting process of the limitation release condition. When the determination result is affirmative, the CPU 24 erases the personal information stored in the flash memory 30.

  Therefore, if the mobile communication terminal that is in the hands of a third party is a terminal for which browsing prohibition mode is set and deletion of personal information is not permitted, the mobile communication terminal enters the browsing permission mode in response to a specific operation of the third party. The personal information stored in the flash memory 30 is leaked due to the transition.

  On the other hand, if the mobile communication terminal that is in the hands of a third party is a mobile communication terminal for which the viewing prohibition mode is set and the limited release condition is enabled, browsing in response to the cancellation code of the input operation by the third party Although the permission mode is set, the personal information stored in the flash memory 30 is erased. Thereby, leakage of personal information is prevented.

  When a mobile communication terminal with the browsing prohibit mode set and the limited release condition enabled is returned to the original owner's hand, the owner erases personal information by satisfying the unlocking condition by remote control. The operation mode is changed to the browsing permission mode while avoiding the above. As a result, personal information is accurately protected.

  In this embodiment, the mobile communication terminal has been described. However, the present invention is not limited to this, and any device having a communication function and a memory such as a PHS and a PDA can be applied.

  Further, in this embodiment, it has been described that a specified time and a specified number of incoming calls are assigned to each of a plurality of effective numbers. However, the present invention is not limited to this. The number of times may be assigned.

  Further, in this embodiment, it has been described that when the lock execution condition is satisfied, the erasure process is performed according to the emergency erasure flag Femergeny after the lock process is performed. However, it is also possible to execute the lock process after performing the erase process according to the emergency erase flag Femergency. Further, it has been described that when the unlocking condition is satisfied, the erasing process is performed according to the limited flag Only after the unlocking process is performed. However, it is also possible to execute the unlocking process after the erasing process is performed in accordance with the limit flag Only.

  Since the portable communication terminal 10 of another embodiment is the same as the embodiment of FIGS. 1 to 11 except for the points described below, the description of the same configuration is omitted.

  Referring to FIG. 14, when the lock execution condition is satisfied, it is determined in step S55 whether or not the emergency erasure flag Femerency is set to “1”. If the determination result is affirmative, it is determined that the personal information should be promptly deleted, an erasure process is executed in step S57, and the process proceeds to step S53. If the determination result is negative, it is determined that the personal information should be retained, and lock processing is executed in step S53. When the locking process is completed, the process proceeds to step S59.

  Referring to FIG. 15, when the unlocking condition is satisfied, it is determined in step S75 whether or not the limit flag Only is set to “1”. If the limit flag Only is “0”, the process proceeds to step S73. If the limit flag Only is “1”, it is determined in step S77 whether the main body operation satisfying the first release condition is canceled. If a remote operation satisfying the second release condition is performed, it is considered that the unlocking condition is normally released by the remote operation, and the process proceeds to step S73. If a main body operation satisfying the first release condition is performed, the main body operation is performed. Since it is considered that the unlocking condition has been illegally released, an erasure process is executed in step S79, and the process proceeds to step S73.

  Further, in this embodiment, it has been described that the personal information stored in the flash memory 30 is erased when the unlocking condition is satisfied by the operation of the main body while the unauthorized use prevention condition is applied. However, when the unlocking condition is satisfied by the operation of the main body in the state where the unauthorized use prevention condition is applied, it is possible to make the person holding the mobile communication terminal confirm whether or not to delete.

  Since the portable communication terminal 10 of the other embodiment is the same as the embodiment of FIGS. 1 to 11 except the points described below, the description regarding the same configuration is omitted.

  According to FIG. 16, if the unlocking condition is satisfied by the main body operation and the limited flag “Only” is “1”, the CPU 24 issues a seventh screen display command to the display device 28 in step S91. In accordance with this command, the display device 28 outputs the seventh screen V7 as shown in FIG. When the seventh screen V7 is displayed, it is determined whether or not a determination operation has been performed by the key input device 26 in step S93. When the determination operation is performed, an erasing process is executed in step S77. When the cancel operation is performed, the process returns to step S71. As a result, it is possible to prevent the personal information from being accidentally deleted.

It is a block diagram which shows the structure of one Example of this invention. (A) is an illustration figure which shows an example of operation | movement of the display device 28 applied to the other Example of this invention, (B) is other of the display device 28 applied to the other Example of this invention It is an illustration figure which shows an example of operation | movement, (C) is an illustration figure which shows an example of the other operation | movement of the display device 28 applied to the other Example of this invention, (D) is other figure of this invention It is an illustration figure which shows an example of other operation | movement of the display device 28 applied to an Example, and (E) is an illustration figure which shows an example of operation | movement of the display device 28 applied to the other Example of this invention. It is. It is an illustration figure which shows an example of the table expand | deployed by RAM applied to the FIG. 1 Example. FIG. 2 is a timing diagram showing a part of the operation of the embodiment in FIG. 1. FIG. 10 is a timing diagram showing another part of the operation of the embodiment in FIG. 1; FIG. 10 is a timing diagram showing another part of the operation of the embodiment in FIG. 1; (A) is a timing chart showing still another part of the operation of FIG. 1 embodiment, and (B) is a timing chart showing another part of the operation of FIG. 1 embodiment. (A) is a timing diagram showing another part of the operation of FIG. 1 embodiment, (B) is a timing diagram showing still another part of the operation of FIG. 1 embodiment, (C) is a diagram. It is a timing diagram which shows the other part of operation | movement of 1 Example. It is a flowchart which shows a part of operation | movement of CPU24 applied to the FIG. 1 Example. It is a flowchart which shows a part of other operation | movement of CPU24 applied to the FIG. 1 Example. It is a flowchart which shows a part of other operation | movement of CPU24 applied to the FIG. 1 Example. FIG. 11 is a flowchart showing yet another portion of the behavior of the CPU 24 applied to the embodiment in FIG. 1. It is a flowchart which shows a part of other operation | movement of CPU24 applied to the FIG. 1 Example. It is a flowchart which shows a part of operation | movement of CPU24 applied to the other Example of this invention. It is a flowchart which shows a part of other operation | movement of CPU24 applied to the other Example of this invention. It is a flowchart which shows a part of operation | movement of CPU24 applied to the other Example of this invention. It is an illustration figure which shows an example of operation | movement of the display device 28 applied to the other Example of this invention.

Explanation of symbols

10 ... Mobile communication terminal 24 ... CPU
26 ... Key input device 28 ... Display device 30 ... Flash memory

Claims (8)

Browsing prohibiting means for setting the operation mode to a browsing prohibiting mode for prohibiting browsing of personal information stored in the memory when the first incoming call condition is satisfied;
First browsing permission means for setting the operation mode to a browsing permission mode that permits browsing of personal information stored in the memory when a specific operation is accepted in a state in which the browsing prohibition mode is set;
Second browsing permission means for setting the operation mode to the browsing permission mode when a second incoming call condition is satisfied in a state where the browsing prohibition mode is set;
Determining means for determining whether or not the deletion of the personal information stored in the memory is permitted in relation to the setting process of the first browsing permission means, and when the determination result of the determining means is affirmative A mobile communication terminal comprising first erasure means for erasing personal information stored in a memory. The mobile communication according to claim 1, further comprising: a lock processing unit that executes a lock process when the browsing prohibit mode is set; and a lock release unit that performs a lock release process when the browsing prohibit mode is set. Terminal. An assigning means for assigning an identifier to a desired source;
Each of the first incoming call condition and the second incoming call condition is assigned to source information corresponding to the source to which the identifier is assigned, number of incoming calls information assigned to the source information, and source information. The mobile communication terminal according to claim 1 or 2, defined by a specified time. Measuring means for measuring the time elapsed from the first incoming call from the source to which the identifier is assigned;
The number of incoming calls from the source to which the identifier is assigned before the time measured by the measuring means in the state where the browsing permission mode is set passes the designated time corresponding to the designated time information is the designated incoming call. First determination means for determining whether or not the number of incoming calls corresponding to the frequency information has been reached, and a specified time corresponding to the specified time measured by the measuring means in a state where the browsing prohibit mode is set The apparatus further comprises second determination means for determining whether or not the number of incoming calls from the source to which the identifier is assigned has reached the number of incoming calls corresponding to the specified number of incoming calls before the elapse of time. Mobile communication terminal.   5. The mobile communication terminal according to claim 1, further comprising second erasure means for erasing personal information stored in the memory in response to the browsing prohibition mode.   6. The mobile communication terminal according to claim 1, further comprising an output unit that outputs an image prior to the erasing process of the first erasing unit. To the processor provided in the mobile communication terminal,
A browsing prohibiting step for setting the operation mode to a browsing prohibiting mode for prohibiting browsing of personal information stored in the memory when the first incoming call condition is satisfied;
A first browsing permission step for setting the operation mode to a browsing permission mode that permits browsing of personal information stored in the memory when a specific operation is accepted in a state in which the browsing prohibition mode is set;
A second browsing permission step for setting the operation mode to the browsing permission mode when a second incoming call condition is satisfied in a state where the browsing prohibition mode is set;
A determination step of determining whether or not erasure of personal information stored in the memory is permitted in relation to the setting process of the first browsing permission means, and when the determination result of the determination means is affirmative An operation control program for executing an erasing step for erasing personal information stored in a memory. An operation control method for a mobile communication terminal,
A browsing prohibiting step for setting the operation mode to a browsing prohibiting mode for prohibiting browsing of personal information stored in the memory when the first incoming call condition is satisfied;
A first browsing permission step for setting the operation mode to a browsing permission mode that permits browsing of personal information stored in the memory when a specific operation is accepted in a state in which the browsing prohibition mode is set;
A second browsing permission step for setting the operation mode to the browsing permission mode when a second incoming call condition is satisfied in a state where the browsing prohibition mode is set;
A determination step of determining whether or not erasure of personal information stored in the memory is permitted in relation to the setting process of the first browsing permission means, and when the determination result of the determination means is affirmative An operation control method including an erasing step of erasing personal information stored in a memory.

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