JP2008312070A - Portable phone with memory card security function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable phone having a security function by which only a user himself/herself who registers personal information, etc. in all the external storage media used by a legitimate user can remove the external storage media from the portable phone main body. <P>SOLUTION: The portable phone attachably/detachably provided with all the external storage media used by the legitimate user in the main body is provided with: a first storage means in which a personal identification number for identifying the user is stored; a first comparison means for comparing an input personal identification number with the number stored in the first storage means when the external storage media are removed from the portable phone; a second storage means in which biological identification information for specifying the user is stored; a second comparison means for comparing the input biological identification information with the information stored in the second storage means when the external storage medium is removed from the portable phone; and a removal prohibition means for prohibiting the external storage medium when at least one comparison result in the first and second comparison means is not matched. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a mobile phone, and more particularly to a mobile phone provided with a memory card storing subscriber information such as a so-called UIM card, which is detachable from the main body of the phone.

  In recent years, there has been a remarkable spread of mobile phones, and the number of mobile phone subscribers has surpassed the number of conventional fixed-line subscribers and is still increasing. In response to this, various optional functions added to the mobile phone have also progressed in various stages, and the convenience for the user to use the mobile phone has been significantly improved.

  In particular, in so-called third generation or later mobile phones, there are a wide variety of models equipped with IC memory cards (hereinafter simply referred to as “memory cards”) in which personal information of subscribers such as telephone numbers and subscriber IDs are recorded. It is becoming widespread (see Patent Documents 1 to 3). This memory card is generally referred to as a SIM (Subscriber Identity Module) card, a USIM (Universal Subscriber Identity Module) card, or a UIM (User Identity Module) card.

  These memory cards store personal information of the user who uses the mobile phone, such as the phone number, subscriber ID, or billing information of the mobile phone, and the card itself is detachable from the main body of the mobile phone. It has a structure. Therefore, the user of the mobile phone removes only this memory card from the mobile phone that is normally used, and attaches it to the other mobile phone, so that the mobile phone always uses the other mobile phone. Can be used.

That is, by using these memory cards, the user's personal information such as a subscriber ID can be easily transferred. For example, even when using a mobile phone that is different from a normal one at a travel destination or the like, Identity can always be ensured. In particular, UIM cards and USIM cards are expanded and developed based on the functions of SIM cards used in GSM (Global System for Mobile Communications) mobile phones, and are compatible with global common standards. ing. As a result, it is possible to use an international roaming service that can receive a service provided by an overseas telecommunications carrier that is different from the telecommunications carrier with which a normal contract is made, by replacing the UIM card or USIM card even overseas.
JP 2006-155531 A JP 2004-328372 A Japanese Patent Laid-Open No. 2002-300254

  While the memory card has the convenience as described above, a serious problem occurs when the memory card is in the hands of a third party other than a legitimate user. That is, a third party who illegally acquires a memory card can impersonate the user of the memory card and freely use any mobile phone. In addition, since a large amount of personal information of the user is recorded on the memory card, there is a risk of serious damage to the user of the memory card if a third party decrypts the information using some means. .

  Because of such fears, these memory cards are generally mounted at positions that are difficult to remove from the main body of the mobile phone. For example, there is a model that is mounted under a battery pack in a mobile phone, etc., and has a structure in which a memory card cannot be attached or detached unless the back cover of the mobile phone is opened and the battery pack is removed. Therefore, in the case of a memory card such as a UIM card, for example, a conventional SD card used for storing content data or the like has a structure that can be easily attached and detached from the mobile phone body with one touch. Absent.

  However, such a structure or method for attaching / detaching a memory card to / from a mobile phone can be complicated by considering the convenience of the user when attaching or removing the memory card to / from the mobile phone body. difficult. In addition, even if such a detachable structure and detachment method are complicated, a countermeasure that has a decisive effect on a malicious third party who intends to acquire a memory card from the beginning. It is clear that it cannot be.

  The present invention aims to solve the above-described conventional problems, and more specifically, only the user himself / herself who has registered personal information such as a subscriber ID in the memory card holds the memory card. An object of the present invention is to provide a mobile phone having a security function that can be detached from the mobile phone body.

  In order to achieve the above-mentioned object, a mobile phone according to a first aspect of the present invention is a mobile phone comprising a memory card in which subscriber information and personal information related thereto are stored detachably in the phone body. A first storage means for storing a predetermined password for recognizing and identifying a memory card; and a password input from an operation unit provided in the mobile phone body when the memory card is removed from the mobile phone body; A mechanism for removing the memory card from the mobile phone body when the comparison result of the first comparison means for comparing the personal identification number stored in the first storage means and the comparison result in the first comparison means do not match. And a removal prohibiting means for prohibiting the removal of the lock.

  According to such a configuration, it becomes impossible for a third party other than the legitimate user storing the password to remove the memory card from the mobile phone. The security function of the mobile phone that is detachably attached to the mobile phone can be greatly improved.

  According to a second aspect of the present invention, there is provided a mobile phone including a memory card in which subscriber information and personal information related thereto are detachably attached to the phone body in order to achieve the above-described object. When removing the memory card from the mobile phone body, the second storage means storing the biometric information of the individual specified by the subscriber information stored in the memory card and personal information related thereto, Second comparison means for comparing the biometric identification information input from the biometric identification information reading unit provided in the mobile phone body with the biometric identification information stored in the second storage means; and the second comparison Removal prohibiting means for locking the memory card removal mechanism from the mobile phone body and prohibiting the removal when the comparison result in the means does not match; And it has a non-configuration.

  According to such a configuration, for example, even when a legitimate user leaks a password for removing a memory card to a third party due to negligence or error, it is registered in advance when removing the memory card. Since the user's biometric information (for example, fingerprint, iris, voiceprint, etc.) is required, the removal of the memory card by a third party other than the authorized user can be prevented.

  A mobile phone according to a third aspect of the present invention is a mobile phone that includes a memory card in which subscriber information and personal information related thereto are stored in a removable manner in order to achieve the above-described object. A first storage means storing a predetermined password for recognizing and identifying the memory card, and a password input from an operation unit provided in the mobile phone body when the memory card is removed from the mobile phone body. A first comparison means for comparing the number with a personal identification number stored in the first storage means, and a biometric identification of the individual specified by the subscriber information stored in the memory card and the personal information related thereto When a second storage means storing information and the memory card are removed from the mobile phone body, the biometric identification information reading unit provided in the mobile phone body is inserted. When the comparison result of at least one of the second comparison unit that compares the biometric identification information that is stored and the biometric identification information stored in the second storage unit does not match the first and second comparison units And a removal prohibiting means for locking the memory card removal mechanism from the mobile phone body and prohibiting the removal.

  According to such a configuration, a security guard system that combines security maintenance using the above-mentioned PIN number and security maintenance using biometric identification information can be constructed. It is possible to further improve the security function of the mobile phone provided for the mobile phone.

  According to a fourth aspect of the present invention, there is provided a mobile phone according to any one of the first to third aspects, wherein the memory card in the removal prohibiting means is obtained using the comparison result in the first or second comparing means. When locking the removal mechanism, or when locking the memory card removal mechanism in the removal prohibiting means, either one of the comparison results in the first or second comparison means is used, or both Whether the mobile phone is used can be arbitrarily set by the user of the mobile phone.

  According to such a configuration, the user of the mobile phone uses the security maintenance system based on the above-mentioned personal identification number, the security maintenance system based on the biometric identification information, or the security maintenance system combining both, and only the personal identification number is used. Security level using only biometric information, security level using only biometric identification information, or security level using both can be freely selected, so that convenience when using the security function of the mobile phone is improved. Can do.

  A cellular phone according to a fifth aspect of the present invention is the mobile phone according to any one of the first to third aspects, although the comparison result in the first or second comparison means does not match. It has a configuration further including card destruction means for destroying the function of the memory card when the removal locking mechanism of the prohibition means is forcibly released.

  According to such a configuration, a third party who cannot obtain a personal identification number or biometric information of a legitimate user disassembles the unlocking / locking mechanism included in the memory card removal / removal prohibition unit, for example, a mobile phone, Even if the memory card is forcibly released by this method, the function of the memory card is destroyed, so even if the memory card can be removed, it cannot be reused.

In the mobile phone according to a sixth aspect of the present invention, in the fifth aspect , the card destruction means has a function of mechanically or electrically destroying the memory card, or a program mounted on the memory card. Alternatively, it has a configuration with a function of destroying data in software.

  According to such a configuration, even if a third party who cannot obtain a personal identification number or biometric information of a legitimate user disassembles the mobile phone and removes the memory card, the memory card is mechanically or electrically destroyed. Alternatively, since the program or data mounted on the memory card is destroyed in a software manner, a memory card that has been illegally acquired cannot be used by a third party. Further, it becomes impossible to decrypt the personal information recorded on the memory card.

  According to a seventh aspect of the present invention, in the mobile phone according to any one of the first to third aspects, the removal locking mechanism in the removal prohibiting means holds the entire memory card and The structure is characterized in that contact with the memory card from the outside of the telephone can be completely blocked.

  According to such a configuration, the memory card has a structure that is completely taken into the mobile phone, and the memory card cannot be directly touched, so that the security function for the memory card is improved.

  According to an eighth aspect of the present invention, there is provided a mobile phone according to any one of the first to third aspects, further comprising attachment / detachment history recording means for recording the attachment / detachment history of the memory card from the mobile phone. It has become.

  According to such a configuration, since the user can always grasp the memory card attachment / detachment history from the mobile phone body, the security function for the memory card can be enhanced.

  According to a ninth aspect of the present invention, in the mobile phone according to any one of the first to third aspects, information information other than subscriber information and personal information related thereto is stored in the memory card. The recorded memory card is included.

  Therefore, according to such a configuration, other than UIM cards and USIM cards, for example, content data distributed from the Internet, general SD cards in which telephone directory data, etc. are recorded are also subject to the present invention. The security function for the memory card can be enhanced.

  According to the present invention, in a mobile phone equipped with a memory card storing subscriber information such as a UIM card or a USIM card, or a memory card recording content information such as an SD card, which is detachable from the telephone body. It is possible to effectively prevent a third party other than a legitimate user from removing these memory cards from the main body of the mobile phone. This makes it possible to prevent removal of the memory card by a malicious third party, and to prevent unauthorized use of the memory card by a third party and leakage of legitimate user personal information. .

  Hereinafter, a plurality of embodiments, which are the best mode for carrying out the present invention, will be described with reference to the accompanying drawings.

First, the configuration of Example 1 of a mobile phone according to one embodiment of the present invention will be described based on the block diagram of FIG.
In the figure, the first storage means 11 is a non-volatile memory circuit that stores a specific password predetermined by a valid user of the mobile phone 1. The first comparison unit 12 compares the password entered from the numeric keypad of the operation unit 13 provided in the mobile phone 1 with the password stored in the first storage unit 11, and the comparison result is described later. This is a comparison circuit for notifying the removal prohibiting means 14.

  The removal prohibiting means 14 has a built-in memory card removal locking mechanism 14a, and is a mechanism portion that permits / inhibits the removal of the memory card 15 from the main body of the mobile phone 1. Note that the memory card 15 is locked by a removal locking mechanism 14a inside the removal prohibiting means 14 and sealed inside the removal prohibiting means 14 like a video cassette taken into a video deck, for example. It has a structure that can be held.

  That is, once the memory card 15 is removed and stored in the main body of the mobile phone 1, even if the cover or back cover of the mobile phone 1 is removed, the memory card 15 cannot be directly visually recognized. Furthermore, it has a mechanical structure in which the memory card 15 cannot be touched directly.

  In addition to the components described above, the mobile phone 1 includes various components such as a transmitter / receiver unit, a wireless transmitter / receiver unit, and a display unit of the mobile phone. Needless to say. However, since these components are not directly related to the implementation of the present invention, the description thereof is omitted.

  Next, the operation of the mobile phone according to the first embodiment will be described based on the flowchart shown in FIG. It is assumed that the flowchart of the processing operation shown in the figure is executed by software processing of a control microprocessor (not shown) built in the mobile phone 1.

  When the user of the mobile phone 1 removes the memory card 15 from the main body of the mobile phone, the user first inputs a predetermined password from the operation unit 13 of the mobile phone 1. It is assumed that the password can be arbitrarily set by the user, and is set and stored in advance in the memory of the first storage unit by operating the operation unit 13 by the user. Incidentally, such a personal identification number may be, for example, a combination of numbers and alphabets of about 5 to 10 digits, or may include a character string including kana characters and the like.

  When the password is input from the operation unit 13, the microprocessor of the mobile phone 1 reads the password entered in step S 201 in FIG. 2 and notifies the first comparison means 12 of this. At the same time, the microprocessor transfers the predetermined password stored in the first storage means to the first comparison means 12.

  In the next step S202, the first comparison means 12 compares the password entered from the operation unit 13 with the password stored in advance, and as a result, if both match (see “ YES ") proceeds to step S204. On the other hand, if they do not match (“NO” in step S203), the process proceeds to step S205.

  When the process proceeds to step S204, the microprocessor releases the locking mechanism of the detachment locking mechanism 14a in the detachment prohibiting means 14 with the memory card 15 built-in and held, and the memory card 15 is removed from the main body of the mobile phone 1. Can be removed. Specifically, for example, the electric lid provided in the removal locking mechanism 14a may be opened and the memory card 15 may be lifted by an ejector inside the removal locking mechanism 14a. A structure may be adopted in which the memory card 15 is slid and pushed out from the side by an electric slide mechanism provided inside the mobile phone 1.

  On the other hand, when the process proceeds to step S205, the microprocessor locks the locking mechanism of the detachable locking mechanism 14a holding the memory card 15 so that the memory card 15 cannot be removed. At this time, in order to warn that unauthorized removal of the memory card 15 is intended by a third party other than the user, for example, an alarm such as a warning sound or a light flashing alarm is output from the main body of the mobile phone 1. Anyway.

Note that in reality, there is a possibility that an incorrect password is input by a legitimate user. Therefore, when the mismatch of the password in step S203 is detected for the first time, for example, “ Only when the warning such as “The PIN is wrong. Please re-enter after confirmation.” Is displayed, and the mismatch of the PIN occurs more than once. You may make it do.
In addition, the memory card security management mechanism described above can be released by the user as needed, and the memory card can be normally attached to and detached from the main body of the mobile phone without performing such a security function. good.

  As described above, in the mobile phone according to the first embodiment, the password input from the operation unit 13 and the password set in advance in the first storage unit 11 inside the mobile phone do not match. Since the memory card cannot be removed from the main body of the mobile phone, it is possible to prevent the memory card from being removed by a third party other than the authorized user of the mobile phone.

  Next, Example 2 which is another embodiment of the present invention will be described. Since the mobile phone according to the second embodiment has the same basic structure as the mobile phone according to the first embodiment, the same components as those in the first embodiment are the same as those in FIG. The description is omitted by attaching the reference numerals.

  First, the configuration of the mobile phone 2 according to the second embodiment will be described based on the block diagram shown in FIG. In the figure, the second storage means 16 is a non-volatile memory circuit that stores in advance various biometric identification information relating to the legitimate user of the mobile phone 2. Here, the biometric identification information represents information related to a living body that can accurately identify a specific individual such as a fingerprint of a human finger, a voice print of a voice, or an iris of an eyeball.

  It is assumed that these pieces of biometric identification information are stored in advance in the memory of the second storage unit 16 by the user of the mobile phone 2 in advance. For example, a fingerprint can be collected using a fingerprint sensor provided on the casing of the mobile phone 2, and a voiceprint samples a voice pattern of a predetermined length using a microphone for transmission of the mobile phone 2. Can be recorded. In addition, the iris of the eyeball can be photographed using a CCD camera for imaging provided in the mobile phone 2.

  Individual identification information of the user himself / herself collected by these various sensors is subjected to predetermined data compression processing and data format conversion processing, and then stored in the nonvolatile memory circuit of the second storage means 16. It should be noted that the functions of the parts responsible for collection of biometric identification information from these various sensors and various data processing are collectively referred to as the biometric identification information reading unit 18.

  The second comparison unit 17 compares the various types of biometric identification information fetched from the biometric identification information reading unit 18 with the user-specific biometric identification information stored in the second storage unit 16, and the comparison result. Is a comparison circuit that notifies the removal prohibiting means 14 of the removal.

  Next, the operation of the mobile phone according to the second embodiment will be described based on the flowchart shown in FIG. The flowchart of the processing operation shown in the figure is assumed to be executed by software processing of a control microprocessor (not shown) built in the mobile phone 2.

  When the user of the mobile phone 2 removes the memory card 15 from the main body of the mobile phone, first, the user inputs his / her fingerprint, voiceprint, or iris of the eyeball into the mobile phone 2. In these operations, for example, after a key operation or command setting that suggests input of biometric identification information is performed, the user may press a finger against a fingerprint sensor provided on the casing of the mobile phone 2. However, it is also possible to speak a word longer than a certain length toward the transmitting microphone of the mobile phone 2. Or you may make it the CCD camera with which the mobile telephone 2 was equipped point to one's eyes and read an own iris pattern.

  It is not necessary to use all of these biometric identification information, and only one of them may be used, or two or more arbitrary biometric identification information may be used in combination. good. Note that the number and type of biometric identification information to be used can be set and changed freely by the user of the mobile phone 2, for example, in the initial setting process in the mobile phone 2. In addition, the example of the present example 2 is merely an example of the present invention, and other biometric identification information other than the biometric identification information described above is used in the biometric identification information comparison process. The embodiment to be used is not excluded.

  When the biometric identification information is input from the biometric identification information reading unit 18, the microprocessor of the mobile phone 2 reads the biometric identification information input in step S 401 of FIG. 4 and notifies the second comparison means 17 of this. To do. At the same time, the microprocessor transfers predetermined biometric identification information stored in the second storage means 16 to the second comparison means 17.

  In the next step S402, the second comparison means 17 compares the biometric identification information input from the biometric identification information reading unit 18 with the preliminarily stored biometric identification information, and as a result, the two match. ("YES" in step S403) shifts to step S404. On the other hand, if they do not match (“NO” in step S403), the process proceeds to step S405.

  When the process proceeds to step S404 in the flowchart shown in FIG. 4, the microprocessor releases the lock mechanism of the detachment lock mechanism 14a in the detachment prohibiting means 14 with the memory card 15 built-in and held therein, and It is assumed that the memory card 15 can be removed from the main body 2. Specifically, for example, the electric lid provided in the removal locking mechanism 14a may be opened, and the memory card 15 may be lifted by an ejector inside the removal locking mechanism 14a, or the mobile phone 2 A structure in which the memory card 15 is slid and pushed out from the side by an electric slide mechanism provided inside the mobile phone 2 may be adopted.

  On the other hand, when the process proceeds to step S405, the microprocessor locks the locking mechanism of the detaching locking mechanism 14a holding the memory card 15 so that the memory card 15 cannot be removed. At this time, in order to warn that unauthorized removal of the memory card 15 is intended by a third party other than the user, for example, an alarm such as a warning sound or a light flashing alarm is output from the main body of the mobile phone 2. Anyway.

In actuality, misrecognition and malfunction of various sensors to which biometric identification information is input are sufficiently considered. Therefore, when a mismatch of biometric identification information in step S403 is detected for the first time, for example, A warning such as “Please input again because the biometric identification information has not been input correctly” is displayed on the display panel of the display unit of the mobile phone 2, and the mismatch of the biometric identification information continues more than once. The above-described external alarm output may be performed only when it occurs.
In addition, the memory card security management mechanism described above can be released by the user as needed, and the memory card can be normally attached to and detached from the main body of the mobile phone without performing such a security function. good.

  As described above, in the mobile phone according to the second embodiment, the biometric identification information input from the biometric identification information reading unit 18 and the legitimate user stored in advance in the second storage unit 16 in the mobile phone are displayed. Since the memory card cannot be removed from the main body of the mobile phone unless the biometric identification information matches, it is possible to prevent the memory card from being removed by a third party other than the authorized user of the mobile phone.

  Next, Example 3 which is another embodiment of the present invention will be described. Since the basic structure of the mobile phone according to the third embodiment is the same as that of each of the above-described mobile phones, the same components as those in the first or second embodiment are shown in FIGS. The description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  First, the configuration of the mobile phone 3 according to the third embodiment will be described based on the block diagram of FIG. In the figure, a gate circuit 19 is a gate circuit responsible for gate control when comparison result signals representing the comparison results of the first comparison means 12 and the second comparison means 17 are transmitted to the removal prohibition means 14. . The gate function of the gate circuit 19 is determined by a command signal from the operation unit 13.

  The command signals from the operation unit 13 are mainly two types of command signals. One is a logical product (AND) gate circuit 19a (hereinafter simply referred to as an "AND circuit") as shown in FIG. Command signal). In this case, since the gate circuit 19 functions as an AND circuit, the removal prohibiting means when the comparison result signals output from each of the first comparing means 12 and the second comparing means 17 both become the logic level “1”. A release signal for releasing the removal prohibition is transmitted to 14. Here, it is assumed that each comparison means outputs a logic level “0” signal when the comparison inputs do not match, and outputs a logic level “1” signal when the comparison inputs match.

  On the other hand, another command signal from the operation unit 13 is a command signal for setting the gate function of the gate circuit 19 to an OR gate circuit 19b (hereinafter simply referred to as an “OR circuit”) as shown in FIG. 6B. is there. In this case, since the gate circuit 19 functions as an OR circuit, when the comparison result signal of either the first comparison unit 12 or the second comparison unit 17 is at the logic level “1”, that is, which comparison result signal is When the comparison input indicates coincidence, a release signal for canceling the removal prohibition is transmitted to the removal prohibiting means 14. Incidentally, it is assumed that the user can arbitrarily set and change which of the first comparison means 12 and the second comparison means 17 uses the comparison result signal.

  The command signal may be input by the user from the operation unit 13 every time comparison authentication is performed, or the command signal set in advance by the user and stored in a memory register in the operation unit 13. Each time comparison authentication is performed, it may be automatically transmitted from the operation unit 13 to the gate circuit 19.

  Next, the operation of the mobile phone 3 according to the third embodiment will be described based on the flowchart of FIG. In the operation process of the flowchart shown in the figure, it is assumed that the function of the gate circuit 19 is set to work as the AND circuit. That is, in the present embodiment, the personal identification number input from the operation unit 13 and the personal identification number stored in the first storage unit 11 match, and various biological identifications captured from the biological identification information reading unit 18 are obtained. The removal of the memory card 15 built in the mobile phone 3 from the mobile phone main body is allowed only when the information matches various user-specific biometric identification information stored in the second storage means 16. It is.

  When the user of the mobile phone 3 removes the memory card 15 from the main body of the mobile phone, the user first inputs a predetermined password from the operation unit 13 of the mobile phone 3. It is assumed that the password can be arbitrarily set by the user, and is set and stored in advance in the memory of the first storage unit by operating the operation unit 13 by the user. Incidentally, such a personal identification number may be, for example, a combination of numbers and alphabets of about 5 to 10 digits, or may include a character string including kana characters and the like.

  When the user enters a password from the operation unit 13, the microprocessor of the mobile phone 3 reads the password entered in step S <b> 701 in FIG. 7 and notifies the first comparison means 12 of this. At the same time, the microprocessor transfers the predetermined password stored in the first storage means to the first comparison means 12.

  In the next step S702, the first comparison means 12 compares the password entered from the operation unit 13 with the password stored in advance, and as a result, if both match ("YES in step S703"). ] "Proceeds to step S704. On the other hand, if they do not match (“NO” in step S703), the process proceeds to step S708.

  When the process proceeds to step S704, the microprocessor continues to obtain the biometric identification information of the person who is operating the mobile phone 3 from the biometric identification information reading unit 18 via various sensors provided in the mobile phone 3. read. Then, the process proceeds to the next step S705, and the read information is compared with the user-specific biometric identification information stored in the second storage unit 16.

  In this case, as the biometric identification information to be compared, all of the above-described fingerprints of fingers, voice voice prints, and irises of eyes may be used, or one or two of them may be used in any combination. May be. Note that the example of the third embodiment is merely an example of the present invention, and excludes the use of other biometric identification information other than the above in the biometric identification information comparison process. is not.

  As a result of the comparison processing in step S705, when the biometric identification information read from the biometric identification information reading unit 18 matches the biometric identification information unique to the user stored in the second storage unit 16 ("YES" in step S706) ) Proceeds to step S707. On the other hand, if they do not match (“NO” in step S706), the process proceeds to step S708.

  When the process proceeds to step S707, the microprocessor releases the lock mechanism of the detachment lock mechanism 14a holding the memory card 15 and allows the memory card 15 to be removed from the main body of the mobile phone 1. To do. On the other hand, when the process proceeds from step S703 or step S706 to step S708, the microprocessor locks the locking mechanism of the detachable locking mechanism 14a holding the memory card 15 and cannot remove the memory card 15. State.

  The operation of removing the memory card 15 from the telephone body by releasing the lock mechanism of the detachable lock mechanism 14a or the removal of the memory card 15 by locking the lock mechanism of the detachable lock mechanism 14a is guarded. Since the operations to be performed are the same as those described in the above embodiments, the description thereof is omitted. In the third embodiment, when the function of the gate circuit 19 is set to the OR circuit, the processing operation is the same as in the case of either the first embodiment or the second embodiment described above. The description is omitted. Note that the security management mechanism of the memory card described above can be released by the user as necessary, and the memory card can be normally attached and detached from the main body of the mobile phone without performing such a security function. good.

  In the mobile phone according to the third embodiment, the personal identification number input from the operation unit 13 matches the personal identification number preset in the first storage unit 11 inside the cellular phone. The memory card cannot be removed from the main body of the mobile phone unless the biometric identification information read from the biometric identification information unique to the user stored in the second storage means 16 matches. Therefore, even if the user of the mobile phone is made aware of his / her PIN by a mistake or error, the third party cannot remove the memory card from the main body of the mobile phone, The safety of the mobile phone with a memory card can be further increased.

Next, Example 4 which is another embodiment of the present invention will be described. Note that the mobile phone according to the fourth embodiment has the same basic structure as the mobile phone according to each of the embodiments described above, and therefore the same components as those of the embodiments are the same as those described in the above-described drawings. The description thereof is omitted by attaching the reference numeral.

The configuration and characteristics of the mobile phone 4 according to the fourth embodiment will be described with reference to the block diagram shown in FIG. As can be seen from the figure, the cellular phone 4 of the fourth embodiment is obtained by adding a card destruction means 20 to the configuration of the cellular phone 3 of the third embodiment, and taking out the memory card from the gate circuit 19. A release signal for canceling the prohibition is supplied to the card destruction means 20 together with the removal prohibition means 14.

  The card destruction means 20 electrically or mechanically destroys the memory card 15 when the memory card 15 is about to be removed from the telephone body even though the release signal from the gate circuit 19 has not been received. It is a part having a function to perform or a function to destroy a program or data mounted on the memory card 15 in software.

  Specifically, when the release signal is not output from the gate circuit 19, for example, when the cover of the removal prohibiting means 14 is removed, the card destroying means 20 that detects this is the memory destruction means 20 An overvoltage or overcurrent exceeding the rated value is supplied to a control microprocessor or nonvolatile memory constituting the card 15 to electrically destroy these functions.

  Moreover, as a memory card destruction method by the card destruction means 20, this may be performed by a software method. For example, when an inappropriate removal behavior of the memory card 15 is detected, the bit configuration of the control program or stored data recorded in the nonvolatile memory included in the memory card 15 is all set to high (Hi) or low (Low). The bits may be rewritten to random bits derived from a predetermined random function.

  As a result, the data contained in the memory card 15 is all converted into a completely meaningless format such as “11111...”, All “00000...”, Or “110101001. That is, it goes without saying that the software method in the present embodiment is a concept including such data erasure and data reformatting.

In addition, it is fully conceivable that after the battery of the mobile phone 4 is taken out, the removal prohibiting means 14 is disassembled and the memory card is taken out. For example, a large-capacity small capacitor such as a super capacitor is used. It is preferable that the battery of the mobile phone 4 is always charged and power is supplied to the card destruction means 20 when the card is destroyed through such a large-capacitance capacitor.

  Further, when the memory card release signal is not output from the gate circuit 19 or when the battery is taken out, the claw-like member is pressed against the fine pattern on the surface of the memory card 15 from the card breaking means 20. In this state, when the memory card 15 is extracted, the fine pattern is damaged by the claw-like member, and the function of the memory card 15 may be mechanically destroyed. Alternatively, the mechanical destruction function and the electrical or software destruction function described above may be used in combination as the configuration of the card destruction means 20.

  In the above description, a configuration in which the card destruction means 20 is added to the mobile phone 3 of the third embodiment is shown as an example of the fourth embodiment. However, the configuration of the fourth embodiment is limited to such a case. Instead, it goes without saying that the card destruction means 20 may be added to each mobile phone shown in the first or second embodiment.

  In the mobile phone 4 according to the fourth embodiment, when a malicious third party disassembles the mobile phone and takes out the memory card, the function of the memory card itself is destroyed. However, even if the memory card is taken out from the mobile phone body, it cannot be used, and the personal information stored in the memory card cannot be read.

  Next, Example 5 which is another embodiment of the present invention will be described. The cellular phone according to the fifth embodiment has the same basic structure as the cellular phone according to each of the embodiments described above, and therefore the same components as those of the first to fourth embodiments are described in the above-described drawings. The description thereof is omitted by attaching the same reference numerals.

  First, the configuration and characteristics of the mobile phone 5 according to the fifth embodiment will be described with reference to the block diagram of FIG. As shown in the figure, the cellular phone 5 according to the fifth embodiment is obtained by adding a memory card attachment / detachment history recording means 21 to the configuration of the cellular phone 4 according to the fourth embodiment.

  The attachment / detachment history recording means 21 is a part having a function of recording the number of times and the attachment / detachment date and time in a nonvolatile memory every time the memory card 15 is attached / detached from the telephone body. The detachment history of the memory card 15 recorded in the detachment history recording means 21 can be easily monitored as necessary using, for example, a display panel (not shown) of a display unit provided in the mobile phone 5. It is preferable to have a configuration capable of

  In the above description, a configuration in which the attachment / detachment history recording unit 21 is added to the mobile phone 4 of the fourth embodiment is shown as an example of the fifth embodiment. However, the configuration of the fifth embodiment is limited to such a case. Instead of this, a configuration may be adopted in which the attachment / detachment history recording means 21 is added to the mobile phone shown in the above-described embodiments.

  In the mobile phone 5 according to the fifth embodiment, since the history is accurately recorded every time the memory card is attached / detached from the main body of the mobile phone, the user of the mobile phone always knows the history of the memory card attachment / detachment. Can do. As a result, the user of the mobile phone can perform security management of the memory card more reliably.

  The present invention is not limited to each embodiment described above. For example, the shape and arrangement of each part constituting the present invention, or its material, etc., do not depart from the spirit of the present invention. Needless to say, it can be changed as appropriate according to the actual implementation.

The configuration of the present invention described above includes a mobile phone, a PHS terminal, a mobile terminal device, and various types of data terminal devices that are detachably equipped with a memory card such as UIM or USIM, and other memory cards. Etc. can be used.

It is a block diagram which shows the structure of the mobile telephone by Example 1 of this invention. It is a flowchart explaining operation | movement of the mobile telephone by Example 1 of this invention. It is a block diagram which shows the structure of the mobile telephone by Example 2 of this invention. It is a flowchart explaining the operation | movement of the mobile telephone by Example 2 of this invention. It is a block diagram which shows the structure of the mobile telephone by Example 3 of this invention. It is a block diagram which shows the structure of the gate circuit in the mobile telephone of Example 3 of this invention. It is a flowchart explaining the operation | movement of the mobile telephone by Example 3 of this invention. It is a block diagram which shows the structure of the mobile telephone by Example 4 of this invention. It is a block diagram which shows the structure of the mobile telephone by Example 5 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1-4 ... Mobile telephone 11 ... 1st memory | storage means 12 ... 1st comparison means 13 ... Operation part 14 ... Removal prohibition means 14a ... Removal locking mechanism 15 ... Memory card 16 ... 2nd storage means 17 ... 2nd comparison means 18 DESCRIPTION OF SYMBOLS ... Biometric identification information reading part 19 ... Gate circuit 19a ... AND gate circuit 19b ... OR gate circuit 20 ... Memory card destruction means 21 ... Detachment history recording means

Claims (9)

In a mobile phone having a memory card in which subscriber information and personal information related thereto are stored detachably in the phone body,
First storage means for storing a predetermined password for recognizing and identifying the memory card;
When comparing the memory card from the mobile phone body, a first comparison means for comparing the password entered from the operation unit provided in the mobile phone body with the password stored in the first storage means. When,
And a removal prohibiting means for locking the memory card removal mechanism from the mobile phone body and prohibiting the removal when the comparison result in the first comparison means does not match. Phone. In a mobile phone having a memory card in which subscriber information and personal information related thereto are stored detachably in the phone body,
Second storage means storing biometric identification information of the individual specified by the subscriber information stored in the memory card and personal information related thereto;
When removing the memory card from the mobile phone main body, the biometric identification information input from the biometric information reading unit provided in the mobile phone main body is compared with the biometric identification information stored in the second storage means. A second comparison means;
And a removal prohibiting means for locking the memory card removal mechanism from the mobile phone body and prohibiting the removal when the comparison result in the second comparison means does not match. Phone. In a mobile phone having a memory card in which subscriber information and personal information related thereto are stored detachably in the phone body,
First storage means for storing a predetermined password for recognizing and identifying the memory card;
When comparing the memory card from the mobile phone body, a first comparison means for comparing the password entered from the operation unit provided in the mobile phone body with the password stored in the first storage means. When,
Second storage means storing biometric identification information of the individual specified by the subscriber information stored in the memory card and personal information related thereto;
When removing the memory card from the mobile phone main body, the biometric identification information input from the biometric information reading unit provided in the mobile phone main body is compared with the biometric identification information stored in the second storage means. A second comparison means;
Removal prohibiting means for locking the memory card removal mechanism from the mobile phone body and prohibiting the removal when the comparison result of at least one of the first and second comparison means does not match. A mobile phone characterized by that.   When locking the memory card removal mechanism in the removal prohibition means using the comparison result in the first or second comparison means, or when locking the memory card removal mechanism in the removal prohibition means, The user of the mobile phone can arbitrarily set whether to use either one or both of the comparison results in the first or second comparison means. The mobile phone according to claim 1.   Card destruction means for destroying the function of the memory card when the removal locking mechanism of the removal prohibition means is forcibly released in spite of the comparison result in the first or second comparison means being inconsistent The mobile phone according to any one of claims 1 to 3, further comprising:   6. The card destruction means according to claim 5, wherein the card destruction means has a function of mechanically or electrically destroying the memory card, or a function of destroying a program or data mounted on the memory card by software. The mobile phone described.   The detachment locking mechanism in the detachment prohibiting means has a structure in which the entire memory card is held and contact with the memory card from the outside of the cellular phone can be completely blocked. The mobile phone according to any one of the above.   4. The mobile phone according to claim 1, further comprising an attachment / detachment history recording unit that records an attachment / detachment history of the memory card from the mobile phone. The mobile phone according to any one of claims 1 to 3, wherein the memory card includes a memory card in which information information other than subscriber information and personal information related thereto is recorded. .

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