JP6589738B2 - Terminal device - Google Patents

Description

  The present invention relates to a terminal device such as a smartphone, and more particularly to a technique for restricting display contents by a terminal device.

  Some terminal devices are unlocked and become operable when a password is input by operation. This prevents another person who is different from the owner of the terminal device from viewing the display information such as the address book and communication history stored in the terminal device without permission.

  Moreover, in patent document 1, when the character or symbol input continuously is allocated to one character selection key, a character or symbol is input by operation of a character selection key, and a determination key is operated subsequently. Confirms the entered character or symbol, and if the characters or symbols that are entered consecutively are assigned to different character selection keys, enter the character or symbol by operating the previous character selection key. Then, by operating the character selection key after that, the character or symbol input earlier is confirmed. Then, the confirmed character or symbol is concealed. This prevents leakage of the password when inputting the password.

  In Patent Document 2, the first control mode for controlling the display means to display information only when the password is inputted and accepted, and the information is displayed on the display means without requiring the password input acceptance. In the first control mode, the confidential information is displayed without hiding it, while in the second control mode, the confidential information is hidden and not displayed. . This prevents leakage of confidential information.

JP 2004-326525 A JP 2009-223470 A

  Conventionally, information leakage has been prevented on the assumption that the password is not known to other people. For this reason, once the password is known for some reason and the password is input, the terminal device displays information of the instructed content, and thus cannot prevent information leakage. Also, I sometimes didn't notice my information leak.

  The present invention has been made in view of the above circumstances, and an object thereof is to prevent leakage of information even when a password is input to a terminal device.

The terminal device according to one aspect of the present invention is configured to identify the group to which the identification information belongs from the display unit, the control unit that controls the operation of the display unit, and the identification information of at least one other terminal device. stores in association with the group information, receiving the identification information of the other terminal device and that SL憶部to store display information associated with the identification information, from another terminal apparatus by short-range communication A short-range communication unit, and when the identification information of the other terminal device is received by the short-range communication unit, the control unit based on the group information stored in the storage unit, identifying the group to which the identification information received belongs, only the display information stored in the storage unit in association with all of the identification information belonging to the identified said groups To appear in the serial display unit is configured to restrict the display information displayed on the display unit.

  According to the present invention, since the display information displayed on the display unit is limited when the short-range communication unit becomes able to communicate with another specific terminal device, a password is stored on the terminal device. Even if it is input, information leakage can be prevented.

It is a block diagram which shows the terminal device of one Embodiment which concerns on this invention. It is a figure which shows notionally the fixed identification information data table memorize | stored in the memory | storage part of the terminal device of FIG. It is a figure which shows notionally the mail address data table memorize | stored in the memory | storage part of the terminal device of FIG. It is a figure which shows notionally the outgoing / incoming history data table memorize | stored in the memory | storage part of the terminal device of FIG. It is a figure which illustrates the security in the property of the data file memorize | stored in the memory | storage part of the terminal device of FIG. It is a flowchart which shows the process sequence for implementing the display restriction | limiting of the display information in a terminal device. (A) is a figure which shows the screen of the terminal device in the state which does not restrict | limit the display of an address book list, (b) is a figure which shows the screen of the terminal device in the state which restrict | limited the display of the list of address books. is there. (A) is a figure which shows the screen of the terminal device in the state which does not restrict | limit the display of the list of outgoing / incoming calls, (b) shows the screen of the terminal device in the state where the display of the list of outgoing / incoming calls is restricted. FIG. (A) is a figure which shows the screen of the terminal device in the state which does not restrict | limit the display of the list of data file icons, (b) is the screen of the terminal device in the state which restricted the display of the list of data file icons. FIG.

  Hereinafter, a terminal device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a terminal device according to an embodiment of the present invention. In FIG. 1, a plurality of terminal devices 10a, 10b,... Are multifunctional portable terminals such as smartphones and PDAs (Personal Digital Assistants).

  Each of the terminal devices 10a, 10b,... Includes a control unit 11, a display unit 12, an operation unit 13, a network communication unit 14, a short-range communication unit 15, a storage unit 16, and the like.

  The control unit 11 executes various application programs. The control unit 11 includes a processor, a RAM (Random Access Memory), a ROM (Read Only Memory), and the like. The processor is, for example, a CPU (Central Processing Unit), an MPU, or an ASIC. For example, when the control program stored in the storage unit 16 is executed by the processor, the control unit 11 performs the following processing related to display restriction.

  The operation unit 13 includes a plurality of hard keys, a touch panel superimposed on the screen of the display unit 12, and the like. The operation unit 13 is operated by a user and receives input instructions and various information necessary for executing the application program, and receives the control unit 11. Output to.

  The display unit 12 includes an LCD (liquid crystal display) or the like and displays various types of information. The display unit 12 has a touch panel function. The network communication unit 14 is connected to another terminal device through the network N, and transmits / receives various data to / from the other terminal device. The short-range communication unit 15 transmits / receives various data to / from other terminal devices by a communication method such as Bluetooth (registered trademark, including Bluetooth Low Energy). The storage unit 16 includes a non-volatile memory or the like, and stores the control program, various application programs, and various information.

  In such a configuration, the terminal devices 10 a, 10 b,... Always communicate with each other through the respective short-range communication units 15. When another terminal device 10b approaches the terminal device 10a (that is, when another terminal device 10b enters within the communicable range by the short-range communication unit 15 of the terminal device 10a), the short-range communication of the terminal device 10a A communication start request is transmitted and received from the unit 15 to the short-range communication unit 15 of the other terminal device 10b, and mutual communication based on a prescribed protocol and profile is started between these terminal devices 10a and 10b. At the start of this mutual communication, each terminal device 10a, 10b acquires mutual fixed identification information (such as a MAC address). For example, the communicable distance between the terminal devices 10a and 10b is set to about 5 m.

  Here, in each of the terminal devices 10a, 10b,..., Control is performed when a password is input to the operation unit 13 and the control unit 11 matches the input password stored as a regular password. The unit 11 releases the operation restriction (lock) and causes each unit of the device to perform an operation according to each instruction input to the operation unit 13. For this reason, a person who is different from the owner of the terminal device cannot unlock the terminal device unless he / she knows the password, and various information stored in the storage unit 16 (hereinafter referred to as display information). ) Cannot be displayed on the display unit 12. However, once the password is known to a third party for some reason, if a person different from the owner of the terminal device inputs the password, the terminal device is unlocked and the display information is displayed on the display unit. 12, which leads to information leakage.

  Therefore, in the present embodiment, when the communication state is established with another terminal device different from the terminal device through the short-range communication unit 15 of the terminal device, display information displayed on the display unit 12 of the terminal device. Limit.

  For example, if a person different from the owner X of the terminal device 10a is the owner Y of the other terminal device 10b, the owner Y wearing the other terminal device 10b can change the password of the terminal device 10a. Even if the operation unit 13 of the terminal device 10a is operated and the password is input to the terminal device 10a, at this time, the short-distance communication units 15 of the terminal devices 10a and 10b can communicate with each other. Therefore, the display information displayed on the display unit 12 of the terminal device 10a is limited. This prevents leakage of display information without relying only on a password.

  Next, the display restriction performed by the terminal device 10a will be described by taking the terminal device 10a as an example.

  The control unit 11 of this terminal device 10a generally divides the owners of other terminal devices 10b, 10c,... Different from the terminal device 10a into groups, and by address group, outgoing / incoming call history, and data files. Restrict the display of icons.

  Here, in order to restrict the display of the address book and outgoing / incoming call history for each group as described above, the respective data tables D1, D2, and D3 as shown in FIG. 2, FIG. 3, and FIG. 10a is stored in the storage unit 16 in advance.

  FIG. 2 is a diagram conceptually showing a fixed identification information data table D1 in which the names of owners of other terminal devices different from the terminal device 10a are associated with the fixed identification information for each group. In this fixed identification information data table D1, a plurality of groups A, B, C,... Are set, and the names of other terminal device owners and fixed identification information are set in association with each group. For example, in group A, owner names Aa, Ab,... Are associated with fixed identification information IDaa, IDab,..., And in group B, owner names Ba, Bb,... And fixed identification information IDba, IDbb. Are associated with each other, and in the group C, the owner names Ca, Cb,... And the fixed identification information IDca, IDcb,.

  In the terminal device 10a, every time the short-range communication unit 15 performs short-range communication with the short-range communication unit 15 of another terminal device, the fixed identification information of the other terminal device is received and the storage unit 16 Remember me. Then, the owner X of the terminal device 10a operates the operation unit 13 to start an application program for creating the fixed identification information data table D1, and then inputs the names of other terminal device owners. When the input name of the owner is associated with the received fixed identification information and an instruction to assign the received fixed identification information and the input name of the owner to any group is input, the control unit 11 Executes processing until the received fixed identification information and the inputted name of the owner are assigned to any group. As a result, the fixed identification information data table D1 shown in FIG. 2 is created and stored in the storage unit 16.

  FIG. 3 conceptually shows a mail address data table D2 in which the name of the owner of another terminal device different from the terminal device 10a, the mail address of the owner, and fixed identification information are associated with each other. In the mail address data table D2, the owner names Aa, Ba, Ca,... Correspond to the mail addresses Eaa, Eba, Eca,. It is attached.

  In the terminal device 10a, when mail is transmitted / received to / from another terminal device via the network communication unit 14, the mail address of the owner of the other terminal device is acquired and stored in the storage unit 16. Then, when the owner X of the terminal device 10a operates the operation unit 13 to start an application program for creating the mail address data table D2, and inputs the name of the owner of another terminal device, The control unit 11 associates the input owner name with the acquired e-mail address, searches the fixed identification information data table D1 for the fixed identification information corresponding to the input owner name, and acquires the fixed identification information. Execute the process. As a result, the mail address data table D2 shown in FIG. 3 is created and stored in the storage unit 16.

  FIG. 4 conceptually shows an outgoing / incoming history data table D3 in which the time of outgoing or incoming call to another terminal device different from the terminal device 10a, the name of the owner of the other terminal device, and fixed identification information are associated with each other. ing. In the outgoing / incoming history data table D3, the time of outgoing or incoming mail is associated with the owner's names Aa, Bb, Cc,..., And fixed identification information IDaa, IDbb, IDcc,.

  In the terminal device 10a, when the mail is transmitted / received to / from another terminal device through the network communication unit 14, the mail address of the owner of the other terminal device can be acquired. The name and fixed identification information of the owner corresponding to the mail address are retrieved and acquired from the mail address data table D2, and the time of sending or receiving the mail, the name of the owner, and the fixed identification information are associated with each other and stored. It memorizes sequentially. Thereby, the outgoing / incoming history data table D3 shown in FIG. 4 is created and stored in the storage unit 16.

  Further, in accordance with an instruction input to the operation unit 13, for the data file, the control unit 11 is an owner who is prohibited from displaying the data file icon as security in the property of the data file in order to restrict the display. The fixed identification information is set in advance. For example, the control unit 11 sets in advance the fixed identification information IDab and IDbb of the owner whose display of the icon of the data file Fh is prohibited as the security in the property of the data file Fh as shown in FIG.

  Next, a processing procedure for implementing display restriction of display information in the terminal device 10a will be described according to the flowchart shown in FIG.

  First, it is assumed that the terminal device 10a is unlocked by the owner X of the terminal device 10a and the terminal device 10a is in an operating state.

  In this case, in the terminal device 10a, the short-range communication unit 15 does not receive the fixed identification information of other terminal devices (“No” in step S101), and the control unit 11 does not perform display restriction on the display information ( Step S102).

  In this state, when the owner X of the terminal device 10a operates the operation unit 13 to instruct display of the address book, the control unit 11 refers to the fixed identification information data table D1 as shown in FIG. As shown, all groups A, B, C,... Are displayed on the screen of the display unit 12 as a list of address books. For example, when the group B on the screen of the display unit 12 is touched and instructed, the control unit 11 refers to the fixed identification information data table D1 and all the fixed identification information IDba and IDbb belonging to the group B. ,..., And subsequently, by referring to the mail address data table D 2, the respective fixed identification information IDba, IDbb,... Of the group B are searched for the corresponding mail addresses Eba, Ebb,. Eba, Ebb,... Are displayed as a list on the screen of the display unit 12. Similarly, regardless of which of the other groups on the screen of the display unit 12 is touched and instructed, all mail addresses of the instructed group are displayed in a list on the screen of the display unit 12.

  When the owner X of the terminal device 10a operates the operation unit 13 to instruct the display of the outgoing / incoming history, the control unit 11 refers to the fixed identification information data table D1 as shown in FIG. As shown, all groups A, B, C,... Are displayed on the screen of the display unit 12 as a list of outgoing and incoming call history. For example, when the group A on the screen of the display unit 12 is touched and instructed, the control unit 11 refers to the fixed identification information data table D1 and all the fixed identification information IDaa and IDab belonging to the group A. ,..., And subsequently referring to the outgoing / incoming history data table D3, the fixed identification information IDaa, IDab of the group A, the corresponding outgoing or incoming time and the name of the owner, that is, the outgoing and incoming calls of the group A The history of outgoing / incoming calls of group A is displayed as a list on the screen of the display unit 12. Similarly, regardless of which of the other groups on the screen of the display unit 12 is touched and instructed, a history of outgoing / incoming calls of the instructed group is displayed as a list on the screen of the display unit 12.

  When the owner X of the terminal device 10a instructs display of the data file by operating the operation unit 13, the control unit 11 displays all the data files Fa as a list of data files as shown in FIG. , Fb, Fc,... Are displayed on the screen of the display unit 12. Then, regardless of which of the icons of the data files Fa, Fb, Fc,... On the screen of the display unit 12 is touched, the control unit 11 expands and displays the data file corresponding to the touched icon. Displayed on the screen of the unit 12.

  As long as the owner X of the terminal device 10a operates the operation unit 13 in this way, display of display information is not limited.

  On the other hand, the password of the terminal device 10a is known to a person different from the owner X of the terminal device 10a, and the terminal device 10a is in an operating state when the terminal device 10a is unlocked by this different person. It shall be. Further, it is assumed that the different person is the owner Y of the other terminal device 10b and is wearing the other terminal device 10b.

  In this state, since the owner Y wearing the other terminal device 10b is operating the terminal device 10a, the terminal device 10a passes through the short-range communication unit 15 and the other terminal device 10b. And the fixed identification information of the other terminal device 10b is received (“Yes” in step S101). The control unit 11 of the terminal device 10a searches the fixed identification information data table D1 for the fixed identification information of the other terminal device 10b received by the short-range communication unit 15, and detects the group to which this fixed identification information is allocated. (Step S103).

  At this time, the fixed identification information of the other terminal device 10b is the fixed identification information IDab in the fixed identification information data table D1 (FIG. 2), and the group A to which this fixed identification information IDab is allocated is detected. . In this case, the control unit 11 performs display restriction on the presence of a group other than the group A and all fixed identification information belonging to the group other than the group A (step S104).

  For example, when the owner Y of the other terminal device 10b instructs display of the address book by operating the operation unit 13 of the terminal device 10a (“address book” in step S105), the control unit 11 of the terminal device 10a As shown in FIG. 7B, only the group A obtained in step S103 is displayed on the display unit 12 of the terminal device 10a as a list of address books (step S106). The other groups B, C,... Are not displayed on the display unit 12 of the terminal device 10a.

  Then, when the group A on the screen of the display unit 12 is touch-operated and an instruction to display information in the group is input to the operation unit 13, the control unit 11 includes all the fixed identification information IDaa belonging to the group A, .. Are searched from the fixed identification information data table D1, and the respective mail addresses Eaa, Eab,... Corresponding to the fixed identification information IDaa, IDab,. Each mail address Eaa, Eab,... Of group A is displayed as a list on the screen of the display unit 12.

  Therefore, the owner Y can visually recognize the contents of the group A on the screen of the display unit 12 of the terminal device 10a, but cannot visually recognize the contents of the other groups B, C,. That is, even if the owner Y can instruct the group A to display a list of the mail addresses Eaa, Eab,... Of the group A on the screen of the display unit 12, the other groups B, C,. Cannot be displayed, and the mail addresses of other groups B, C,... Cannot be displayed in a list.

  Further, when the owner Y of the other terminal device 10b inputs an instruction to display a history of outgoing / incoming calls by operating the operation unit 13 of the terminal device 10a (“outgoing / incoming history” in step S105), control is performed. As shown in FIG. 8B, the unit 11 displays only the group A detected in step S103 as a list of outgoing and incoming call history (step S107). For this reason, the owner Y can input an instruction to display the information of the group A by touching the group A on the screen of the display unit 12, but each of the other groups shown in FIG. It is not possible to input an instruction to display information on groups B, C,... By touching B, C,.

  When the group A on the screen of the display unit 12 is touched and an instruction to display the information of the group A is input via the operation unit 13, the control unit 11 determines all the fixed identifications belonging to the group A. The information IDaa, IDab,... Is retrieved from the fixed identification information data table D1, and each fixed identification information IDaa, IDab,. The history is searched from the outgoing / incoming history data table D3, and the outgoing / incoming history of this group A is displayed as a list on the screen of the display unit 12.

  Therefore, even if the owner Y can input an instruction to display the information of the group A and can display a list of outgoing / incoming calls of the group A on the screen of the display unit 12, the other groups B, C ,... Cannot be input, and the outgoing / incoming histories of the other groups B, C,.

  When the owner Y of the other terminal device 10b inputs an instruction to display a data file by operating the operation unit 13 of the terminal device 10a ("data file" in step S105), the control unit 11 Referring to the security in the properties of the data files Fa, Fb,..., Whether or not the fixed identification information belonging to the group A obtained in step S103 is set as the fixed identification information of the owner whose data file display is prohibited. And a data file for which fixed identification information belonging to the group A is not set is selected. For example, as shown in FIG. 5, in the data file Fh, the fixed identification information IDab belonging to the group A is set as the fixed identification information that is prohibited from being displayed in the property security. Therefore, the data file Fh is not selected. . In addition, in each of the other data files Fa to Fg, if none of the fixed identification information belonging to the group A is set as property security, the other data files Fa to Fg are selected. And the control part 11 displays the icon of each other data file Fa-Fg selected as shown in FIG.9 (b) (step S108).

  For this reason, the owner Y designates the icons of the other data files Fa to Fg on the screen of the display unit 12 by touch operation, expands the other data files Fa to Fg, and displays the screen of the display unit 12. Although the instruction to be displayed can be input, the display instruction of the data file Fh cannot be input by touching the icon of the data file Fh shown in FIG. 9A, and the data file Fh is expanded. Cannot be displayed.

  Thus, according to the above-described embodiment, in the terminal device 10a of the owner X, the lock of the terminal device 10a is released by the owner Y of the other terminal device 10b, and the terminal device 10a enters the operating state. Sometimes, the fixed identification information IDab of the other terminal device 10b is received, and the display of only the contents of the group A to which the fixed identification information IDab of the other terminal device 10b is allocated is permitted. Display is prohibited for the data file in which the information IDab is set as the fixed identification information whose display is prohibited. Thereby, leakage of the display information of the terminal device 10a of the owner X with respect to the owner Y of the other terminal device 10b can be prevented. According to the above-described embodiment, the terminal device 10a does not completely prohibit display or operation from the owner Y, but restricts the display content and displays only a part of the owner Y. With respect to Y, it is possible to hide some information stored in the terminal device 10a without giving the impression or distrust that the owner Y is subject to display restrictions.

  Thereafter, returning to step S101, if the fixed identification information IDab of the other terminal device 10b is continuously received (“Yes” in step S101), the processing from step S103 is repeated, and the other terminal device 10b is also received. When the reception of the fixed identification information IDab is interrupted or stopped (“No” in step S101), the display restriction on the display information is released (step S102).

  In the above embodiment, the address book, the history of incoming / outgoing calls, and the icon of the data file are illustrated, but the display of other types of display information can also be limited. For example, for application programs, as with data files, the display of application program icons can be restricted if the fixed identification information of owners who are prohibited from displaying the application program is set in advance as security in properties. Can do.

  In addition, display of display information may be limited not by group but by individual.

  Moreover, although the Bluetooth Low Energy (Bluetooth low energy) is illustrated as a communication system of the near field communication part 15, another communication system may be applied. For example, Wi-Fi Direct (Wi-Fi Direct) may be applied.

  Further, the configuration and processing of the above-described embodiment described with reference to FIGS. 1 to 9 are only one embodiment of the present invention, and are not intended to limit the present invention to the configuration and processing.

10a, 10b,... Terminal device 11 Control unit 12 Display unit 13 Operation unit 14 Network communication unit 15 Short range communication unit 16 Storage unit

Claims (5)

A display unit;
A control unit for controlling the operation of the display unit;
The identification information of at least one other terminal device stores in association with the group information for specifying the group to which the identification information belongs, you stores display information associated with the identification information and serial憶部,
A near field communication unit that receives identification information of the other terminal device from another terminal device by near field communication,
When the identification information of the other terminal device is received by the short-range communication unit, the control unit includes the received identification information based on the group information stored in the storage unit. wherein identifying the group that are, so that only the display information associated with all the identification information belonging to the identified said groups stored in the storage unit is displayed on the display unit, the A terminal device that restricts display information displayed on a display unit. The displayed information, address book, or the terminal device according to claim 1 is a communication history.   The control unit is in a state in which communication with another terminal device is enabled by the short-range communication unit, and after restricting display information displayed on the display unit, communication from the communication enabled state is impossible. 3. The terminal device according to claim 1, wherein the terminal device cancels the restriction on the display information displayed on the display unit when the state is changed.   The terminal device according to any one of claims 1 to 3, wherein the short-range communication unit performs short-range communication from the other terminal device by a Bluetooth (registered trademark) communication method or a Wi-Fi communication method. It further includes an operation unit for inputting information by the user,
The storage unit further stores a password,
The control unit is a case where a password input via the operation unit matches a password stored in the storage unit, and the short-range communication unit identifies the other terminal device. Is not received, without limiting the display information displayed on the display unit, all the display information stored in the storage unit can be displayed on the display unit,
When the identification information of the other terminal device is received by the short-range communication unit, the control unit includes a password input via the operation unit and a password stored in the storage unit. The terminal device according to any one of claims 1 to 4, wherein the display information displayed on the display unit is restricted even if they match.