JP2015088837A - Display device and display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain a display device and display method with improved security.SOLUTION: A display device can set a normal mode, a restriction mode for restricting at least a partial function, and a semi-restriction mode to be adopted before a shift from a normal mode to a restriction mode, and includes: a display unit; a reception unit for receiving an input by a user; and a setting unit for setting a semi-restriction mode when the reception unit receives a predetermined input and setting a restriction mode when a screen displayed by the display unit immediately after the setting of the semi-restriction mode is shifted to a screen other than a screen satisfying a predetermined condition.

Description

  The present invention relates to a display device such as a mobile phone.

  Opportunities for handing over a smartphone to a third party to allow the third party to browse the information displayed on the display screen, or for a third party to operate the smartphone in order to execute a specific application, as the functionality of the smartphone increases. Is increasing. For example, parents can hand their smartphone to a child to play, show a map displayed on the display screen to a colleague of the company, tell the location, or let the smartphone operate to experience the demo app at a business meeting Such a case can be considered.

JP 2005-117280 A

  However, if the smartphone is handed over to a third party, other data stored on the smartphone will be viewed by the third party, and another application will be used without permission by the third party. There was a risk of problems from the viewpoint of personal information protection and billing. Therefore, it is desired to ensure security in such a case.

  A display device according to one embodiment of the present invention can set a normal mode, a restricted mode in which at least some functions are restricted, and a semi-restricted mode that can be taken before shifting from the normal mode to the restricted mode. A receiving unit that receives an input by the user, and the semi-restricted mode is set when a predetermined input is received by the receiving unit, and the display unit is set based on the input by the user immediately after the semi-restricted mode is set. When the screen displayed on the screen transitions to a screen other than the screen satisfying the predetermined condition, the setting unit is configured to set the restriction mode.

  A display method according to an aspect of the present invention provides a display device including a display unit and a reception unit that receives an input from a user. The normal mode, the limited mode in which at least some functions are limited, and the limitation from the normal mode. A display method capable of setting a semi-restricted mode that can be taken before shifting to a mode, the accepting step for accepting a predetermined input by the accepting unit, and the semi-restricted mode for setting the semi-restricted mode when accepting the predetermined input A setting step; a display step for displaying a screen on the display unit based on an input by a user immediately after the semi-restricted mode is set; and a screen displayed on the display unit based on the input by the user. A restriction mode setting step for setting the restriction mode when transitioning to a screen other than a screen satisfying the predetermined condition; No.

  According to the display device and the display method according to one embodiment of the present invention, a display device and a display method with improved security can be realized.

It is a front view which shows the external appearance of the display apparatus by the 1st Embodiment of this invention. It is a rear view which shows the external appearance of the display apparatus by the 1st Embodiment of this invention. It is a block diagram which mainly shows the electric constitution of the display apparatus by the 1st Embodiment of this invention. It is a figure which shows a mode that the home screen was displayed on the display of the display apparatus by the 1st Embodiment of this invention. It is the figure which showed a mode that a third party mode setting button was tapped on a home screen. It is the figure which showed a mode that one of the icons arrange | positioned on the home screen was tapped. It is a figure which shows a mode that the screen of the specific application was displayed on the display. It is a figure which shows a mode that the authentication screen which prompts input of a password was displayed on the display. It is a flowchart for demonstrating the mode change process of the display apparatus by the 1st Embodiment of this invention. It is a flowchart for demonstrating the 3rd party mode process of the display apparatus by the 1st Embodiment of this invention. It is a flowchart for demonstrating the 3rd party mode process of the display apparatus by the 1st Embodiment of this invention. It is a figure for demonstrating an example of the screen transition in 3rd party mode. It is a flowchart for demonstrating the 3rd party mode process of the display apparatus by the 2nd Embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings. Note that the display device described below is a mobile phone as an example, and more specifically, a smart phone, but the present invention is also applicable to various terminals such as a PDA, a tablet PC, and a desktop PC. .

(First embodiment)
First, a mobile phone that is a display device according to a first embodiment of the present invention will be described.
<Appearance of mobile phone>
1 and 2 are a front view and a rear view, respectively, showing the appearance of the mobile phone 1a. As shown in FIGS. 1 and 2, the mobile phone 1 a includes a housing 2, a display 3, a touch panel 4, a microphone 5, a call speaker 6, an external speaker 7, and an imaging lens 8. .

  The housing 2 has a substantially rectangular outline when viewed from the front. A display 3 is provided on the front surface of the housing 2. The display 3 is a liquid crystal display, for example. The display 3 may be a display other than a liquid crystal display, for example, an organic EL display.

  A touch panel 4 is disposed on the front surface of the housing 2 so as to cover the display 3. The touch panel 4 is formed in a transparent sheet shape. As the touch panel 4, various types of touch panels such as a capacitance type, an ultrasonic type, a pressure sensitive type, a resistance film type, and a light detection type can be used.

A microphone 5 is disposed at the lower end inside the housing 2. The microphone 5 receives sound that has passed through the microphone hole 5 a formed on the front surface of the housing 2. The microphone 5 generates an electrical signal corresponding to the input sound. In addition, inside the housing 2, a call speaker 6 is disposed at the upper end. The call speaker 6 outputs sound. The output sound passes through an output hole 6 a formed on the front surface of the housing 2 and is emitted to the outside of the housing 2. During a call, the received voice received from the communication destination telephone device (such as a mobile phone) is output from the call speaker 6, and the uttered voice uttered by the user is input to the microphone 5. Note that the sound includes various sounds such as sound and notification sound.

  An external speaker 7 is disposed inside the housing 2. An output hole 7 a is formed in a region facing the external speaker 7 on the rear surface of the housing 2. The sound output from the external speaker 7 passes through the output hole 7 a and is emitted to the outside of the housing 2. An imaging lens 8 included in an imaging unit described later is exposed on the rear surface of the housing 2.

<Electric configuration of mobile phone>
FIG. 3 is a block diagram showing an example of the electrical configuration of the mobile phone 1a. As shown in FIG. 3, the mobile phone 1 a includes a control unit 11, a display unit 12, a touch detection unit 13, a voice input unit 14, a voice output unit 15, a voice processing unit 16, and a key input unit 17. A vibration generating unit 18, a wireless communication unit 19, a timer unit 20, an imaging unit 21, a storage unit 22, and a power supply unit 23.

  The control unit 11 includes a CPU. In accordance with the program stored in the storage unit 22, the control unit 11 includes each unit (display unit 12, touch detection unit 13, voice input unit 14, voice output unit 15, voice processing unit 16, key input unit) that constitutes the mobile phone 1 a. 17, vibration generation unit 18, wireless communication unit 19, timing unit 20, imaging unit 21, storage unit 22 and the like.

  The display unit 12 includes the display 3 shown in FIG. An image (screen) is displayed on the display 3 based on the control signal and the image signal from the control unit 11. The display unit 12 includes a backlight light source when the display 3 is a liquid crystal display.

  The touch detection unit 13 includes the touch panel 4 shown in FIG. The touch detection unit 13 detects a touch operation by the user on the display 3 using the touch panel 4. That is, when the user touches the touch panel 4, the touch detection unit 13 detects a position touched by the user (hereinafter also referred to as “touch position”). The touch detection unit 13 outputs a position signal generated based on the detected touch position to the control unit 11.

  Since the touch panel 4 is provided on the display 3, the user can perform various touch operations by touching the touch panel 4 with a finger while viewing the display 3. The touch operation includes, for example, a tap operation, a flick operation, a slide operation, a drag operation, and the like. The tap operation is an operation of releasing the finger from the touch panel 4 in a short time after the user touches the touch panel 4 with the finger. The flick operation is an operation in which the user touches the touch panel 4 with a finger and then flips the touch panel 4 with the finger in an arbitrary direction. The slide operation is an operation in which the user moves the finger in an arbitrary direction while keeping the finger in contact with the touch panel 4. The drag operation is an operation of releasing a finger from the touch panel 4 after the user performs a slide operation on a moving object such as an icon. The touch operation is not limited to touching the touch panel 4 directly with a finger, and for example, when glass or the like is provided on the touch panel 4, touch the glass with a finger, that is, input via the glass. Including doing.

For example, when the touch detection unit 13 detects a touch position and the touch position is not detected within a predetermined first time after the touch position is detected, the control unit 11 determines that the touch operation is a tap operation. judge. When the touch position is no longer detected after the touch position has been moved within a predetermined second time after the touch position is detected and the touch position is not detected, the control unit 11 performs a flick operation on the touch operation. Is determined. After the touch position is detected, when the touch position moves by a predetermined second distance or more, the control unit 11 determines that the touch operation is a slide operation.

  The voice input unit 14 includes a microphone 5. The audio input unit 14 outputs an electrical signal from the microphone 5 to the audio processing unit 16.

  The audio output unit 15 includes a call speaker 6 and an external speaker 8. An electrical signal from the audio processing unit 16 is input to the audio output unit 15. The audio output unit 15 outputs sound from the call speaker 6 or the external speaker 8.

  The audio processing unit 16 performs A / D conversion or the like on the electrical signal from the audio input unit 14 and outputs the converted digital audio signal to the control unit 11. The audio processing unit 16 performs decoding processing, D / A conversion, and the like on the digital audio signal from the control unit 11, and outputs the converted electric signal to the audio output unit 15.

  The key input unit 17 includes at least one hard key (not shown). For example, the key input unit 17 includes a power key for turning on the mobile phone 1a. The key input unit 17 outputs a signal corresponding to the pressed hard key to the control unit 11 when at least one of the various hard keys arranged on the mobile phone 1a is pressed.

  The wireless communication unit 19 includes a circuit for converting a signal, an antenna 19a for transmitting and receiving radio waves, and the like for performing a call and communication. The radio communication unit 19 converts a signal for communication or communication input from the control unit 11 into a radio signal, and the converted radio signal is transmitted to a communication destination such as a base station or another communication device via an antenna 19a. Send to. Further, the communication unit 20 converts the radio signal received via the antenna 19 a into a signal in a format that can be used by the control unit 11, and outputs the converted signal to the control unit 11.

  The timer 20 measures time under the control of the controller 11.

  The imaging unit 21 includes an imaging lens 8 and an imaging element, and captures still images and moving images based on control by the control unit 11. As shown in FIG. 2, since the imaging lens 8 is provided on the back surface of the mobile phone 1a, it is possible to image an object present on the back surface side of the mobile phone 1a.

  The storage unit 22 includes a ROM, a RAM, and an external memory. Various programs are stored in the storage unit 22. The programs stored in the storage unit 22 include various application programs (for example, home, phone call, e-mail, web browser, map, game, schedule management, etc.) in addition to a control program for controlling each unit of the mobile phone 1a. Including. The program is stored in the storage unit 12 by the manufacturer when the cellular phone 1a is manufactured, and is also stored in the storage unit 22 by the user via a storage medium such as a communication network, a memory card, or a CD-ROM.

  The storage unit 22 also includes a working area that stores data that is temporarily used or generated when the program is executed.

  The power supply unit 23 includes a battery and a remaining amount detection unit. The power supply unit 23 supplies battery power to the control unit 11 and each unit other than the control unit 11. The power supply unit 23 supplies power from the external power supply to the battery to charge the battery. Further, the power supply unit 23 outputs a detection signal corresponding to the remaining amount of the battery detected by the remaining amount detection unit to the control unit 11.

<Mobile phone functions and operations>
Next, functions and operations of the mobile phone 1a according to the present embodiment will be described. The mobile phone 1a according to the present embodiment can set a normal mode, a restricted mode in which at least some functions are restricted, and a semi-restricted mode that can be taken before shifting from the normal mode to the restricted mode.

  The restriction mode is, for example, a security lock mode. In the security lock mode, at least a part of the functions of the mobile phone 1a cannot be used unless authentication is successful due to a password input by the user. In the security lock mode, for example, an authentication screen that prompts the user to input authentication information is displayed on the display 3. In this case, when the authentication is successful by the user entering a password or the like, the mobile phone 1a shifts from the security lock mode to the normal mode, and the user can use the functions restricted in the security lock mode.

  The semi-restricted mode is a mode in which the function is not restricted as much as the restricted mode, but the function is restricted as compared with the normal mode. In the cellular phone 1a according to the present embodiment, in the semi-restricted mode, it is possible to display a screen of a specific application on the display 3, which is one of functions restricted in the restricted mode. In the semi-restricted mode, when the screen of the specific application transitions to the home screen or the screen of another application, the mobile phone 1a transitions from the semi-restricted mode to the restricted mode.

  If the semi-restricted mode is set in this way, for example, when the owner of the mobile phone 1a hands over the mobile phone 1a to a third party and browses the document displayed on the screen, the third party Although it is permitted to view the document or the like, the document or the like cannot be closed and another application can be started and displayed on the screen. This ensures security, so that the owner of the mobile phone 1a can hand over the mobile phone 1a to a third party with peace of mind. Here, the semi-restricted mode can be rephrased as “third-party mode” enabling use by a third party and “temporary use-restricted mode” temporarily limiting functions for use by a third party. it can. In the following description, the semi-restricted mode is referred to as “third party mode”.

  Note that the case where the screen of the specific application transitions to the home screen or the screen of another application means that the screen displayed on the display 3 simply transitions regardless of whether or not the specific application has ended. Therefore, it includes a case where a screen of the application is once erased from the display 4 and a home screen or a screen of another application is displayed on the display 4 while executing the specific application.

  Even if information is displayed on the home screen by an application such as a widget, the home screen does not correspond to an “application screen”. A screen displayed on the entire display 3 when the application is activated or called based on an input by the user such as tapping an icon arranged on the home screen is referred to as an application screen.

  In the third party mode, when a specific screen is displayed on the display 3 based on an input by the user and then an incoming screen is displayed on the display 3 by an incoming call from the outside, the operation mode of the mobile phone 1a is , Go to restricted mode.

  Hereinafter, these mode transitions will be described in detail. FIG. 4 shows a state where the home screen is displayed on the display 3 of the mobile phone 1a. As shown in FIG. 4, a plurality of icons 101 and a third party mode setting button 102 are arranged on the home screen.

  The icon 101 represents a specific application. When it is detected that a tap operation has been performed at a position corresponding to the icon 101, the control unit 11 executes an application corresponding to the icon 101.

  The third party mode setting button 102 is a button for turning on (setting) or turning off (non-setting) the third party mode. When the touch detection unit 13 detects that the “ON” area of the third party mode setting button 102 is tapped, the control unit 11 sets the third party mode, and the touch detection unit 13 sets the third party mode. When it is detected that the “OFF” area of the mode setting button 102 is tapped, the control unit 11 cancels the setting of the third party mode.

  Further, for example, an operation key group 103 is displayed on the screen shown in FIG. The operation key group 101 includes a setting key 103a, a home key 103b, and a back key 103c. The setting key 103a is a key mainly for causing the display 3 to display a setting screen for performing various settings. The home key 103b is a key for mainly shifting the display on the display 3 from another screen to the home screen. The back key 103c is a key for returning the executed process to the process one step before. The display of the operation key group 103 is merely an example, and any one of the operation keys may be omitted, or another operation key may be displayed.

  FIG. 5 is a diagram showing a state where the “ON” area of the third party mode setting button 102 is tapped on the home screen. Thereby, the mobile phone 1a is set to the third party mode.

  After the third party mode is set, as shown in FIG. 6, the user can tap one of the icons 101 arranged on the home screen. As a result, the application corresponding to the tapped icon 101 is activated. The application activated here is, for example, a map application. In this case, a map application screen is displayed on the display 3 of the mobile phone 1a (FIG. 7).

  FIG. 7 shows a state where a screen of a specific application is displayed in a state where the third party mode is set. In this screen, for example, an icon 105 indicating that the third party mode is set may be displayed.

  Here, as shown in FIG. 7, when the user taps the home key 103b to shift to the home screen, the mobile phone 1a shifts from the third-party mode to the restricted mode, and the display 3 displays As shown in FIG. 8, an authentication screen prompting the user to input a password (passcode) is displayed. That is, if authentication is not successful by inputting a password, the user cannot execute various applications and cannot use at least some of the functions of the mobile phone 1a.

  When the user inputs the password and the authentication is successful, the mobile phone 1a shifts from the restricted mode to the normal mode, and can use the functions of the mobile phone 1a that have been restricted so far.

  FIG. 9 is a flowchart for explaining mode change processing of the mobile phone 1a according to the present embodiment. The process shown in FIG. 9 starts when the power of the mobile phone 1a is turned on and ends when the power is turned off.

When the power of the mobile phone 1a is turned on, the control unit 11 sets the operation mode of the mobile phone 1a to the restriction mode (S1). In the restriction mode, the control unit 11 causes the display unit 12 to display an authentication screen that prompts input of a password, for example. If the authentication is not successful, such as the input password does not match a predetermined password (S2: NO), the control unit 11 repeats the process of step 2. If the authentication is successful (S2: YES), the control unit 11 sets the operation mode of the mobile phone 1a to the normal mode (S3).

  For example, when the third party mode setting button 102 shown in FIG. 4 is tapped during the operation in the normal mode, the operation mode is set to the third party mode based on the detection result by the touch detection unit 13. Is determined (S4: YES), the control unit 11 sets the operation mode to the third party mode (S5) and executes the third party mode process (S7). When the setting of the third party mode is not instructed (S4: NO), the control unit 11 determines whether or not there is an operation by the user (S6). If there is a user operation before the predetermined period has elapsed (S6: YES), the control unit 11 returns to step 4 and repeats the process. On the other hand, if it is determined that there has been no user operation before the predetermined time has elapsed (S6: NO), the control unit 11 sets the operation mode to the limited mode (S1), and repeats the processing from step 1 onwards.

  Note that the processing after step S6 means that the mobile phone 1a is locked and a lock screen is displayed on the display 3 when a predetermined time elapses without any user operation. This is effective when the restriction mode is the security lock mode. However, when the restriction mode is not the security lock mode and the control unit 11 determines that there is no user operation before the predetermined time has elapsed (S6: NO), the control unit 11 sets the operation mode to the security lock mode. May be. In this case, if the authentication is successful by inputting a password or the like, the control unit 11 may switch the operation mode to the normal mode, and thereafter, repeat the processes after S4.

  Hereinafter, the third-party mode process will be described with reference to FIGS. 10 and 11. As shown in FIG. 10, in the third party mode, the control unit 11 determines whether or not there is an input by the user based on output signals from the touch detection unit 13 and the key input unit 17 (S8). When determining that there is no input by the user (S8: NO), the control unit 11 returns to Step 8 and repeats the process.

  On the other hand, when determining that there is an input by the user (S8: YES), the control unit 11 determines whether or not it is an instruction to display the screen of the application on the display 3 (S9). When the input by the user is not an instruction to display the application screen on the display 3, that is, when the application screen is not displayed on the display 3 (S <b> 9: NO), the control unit 11 displays the detection result by the touch detection unit 13. Based on this, it is determined whether an operation for canceling the third party mode has been performed (S10). Here, the operation for canceling the third-party mode is, for example, an operation of tapping the “OFF” area of the third-party mode setting button 102 shown in FIG.

  If it is determined that the operation for canceling the third-party mode has not been performed (S10: NO), the control unit 11 performs a process according to the user input in Step 8. This may be, for example, a transition of the home screen. On the other hand, if it is determined that an operation for canceling the third party mode has been performed (S10: YES), the control unit 11 sets the normal mode (S15), and returns to step 4 to repeat the process (FIG. 9).

If it is determined in step 9 that the input by the user is an instruction to display the application screen on the display 3, that is, the application screen is displayed on the display 3 (S9: YES), the control unit 11 displays the display. It is determined whether a screen transition has been performed from the screen to another screen (S12). Here, the control unit 11 may determine whether or not the screen transition has been performed based on whether or not an operation for screen transition (for example, a tap on the home button 101b) has been performed by the user. That is, the control unit 11 may determine that the screen transition has been performed not when the screen transition is performed but when the user attempts to perform the screen transition by performing an operation for the screen transition.

  If it is determined that the screen transition is not performed (S12: NO), the control unit 11 determines whether or not an operation for canceling the third-party mode is performed based on the detection result by the touch detection unit 13 (S14). .

  If it is determined that the operation for canceling the third-party mode is not performed (S14: NO), the control unit 11 returns to Step 12 and repeats the process. On the other hand, if it is determined that an operation for canceling the third party mode has been performed (S14: YES), the control unit 11 sets the normal mode (S15), and returns to step 4 to repeat the process (FIG. 9).

  If it is determined that the screen transition has been performed (S12: YES), the control unit 11 determines whether or not the transition destination screen is a screen related to the same application as the screen of the application displayed on the display 3 in Step 9 ( S13). For example, when the screen displayed on the display 3 in step 9 is the received mail list screen and the transition destination screen is the new mail creation screen, the screen is the same e-mail application. Judge that it is the screen of the same application. If it is determined that the screens are the same application screen (S13: YES), the control unit 11 repeats the processing from step 14 onward.

  On the other hand, if it is determined that the screens are not the same application screen (S13: NO), the control unit 11 sets the operation mode of the mobile phone 1a to the restriction mode as shown in FIG. 11 (S16). For example, when the screen displayed on the display 3 in step 9 is the screen of the received mail list of the e-mail application and the transition destination screen is the map application screen, the control unit 11 does not display the same application screen. Judge that there is no. When the operation mode is set to the restriction mode, the control unit 11 causes the display unit 12 to display an authentication screen that prompts the user to input a password, for example, and determines whether the authentication is successful (S17).

  If the authentication is not successful (S17: NO), the control unit 11 repeats the process of step 17. On the other hand, if it is determined that the authentication is successful (S17: YES), the control unit 11 sets the operation mode of the mobile phone 1a to the normal mode (S18), and transitions to the display unit 12 in step 12 or attempts to transition. The transition destination screen is displayed (S19). And it returns to step 4 and repeats processing (Drawing 9). In step 19, in order to display the transition destination screen on the display 3, the control unit 11 stores the transition destination screen that has transitioned or was about to transition when the third party mode is shifted to the restriction mode. It can be stored in the unit 22.

  In the mobile phone 1a, the screen of the application displayed on the display 3 based on the input by the user immediately after the third party mode is set becomes a screen other than the one or more screens of the application including the displayed screen. In the case of transition, the restriction mode is set. For example, when a map application screen is displayed and then the screen transitions to a screen of another application other than the home screen or the map application, the restriction mode is set. That is, in the third party mode, when the screen of an application other than the map application is displayed on the display 3, the mode is shifted to the restriction mode. Therefore, the user substantially activates and operates the other application. I can't.

According to such a mobile phone 1a, when the third party mode is set, a third party who does not know the password or the like displays a screen of an application other than the specific application designated by the user to display this application. You will no longer be able to perform operations on Thereby, the owner of the mobile phone 1a can hand over the smartphone to a third party with peace of mind and allow other people to view the information displayed on the screen.

  In the present embodiment, the restriction mode is not set when the screen of the application displayed on the display 3 immediately after the third party mode is set transitions to another screen of the same application. For example, as shown in FIG. 12, immediately after the third party mode is set, a map centered on the point A is displayed on the display 3 based on the user input (FIG. 12A), and then by a slide operation. When the screen is changed and a map centered on point B is displayed (FIG. 12B), the screen before and after the transition is the same map application screen, so the mode shifts from the third party mode to the restricted mode. do not do. This can be applied to, for example, a received mail list screen and a new mail creation screen in a mail application, and different play screens in a game application.

  Further, according to the mobile phone 1a, an application displayed on the display 3 based on a user input immediately after setting the third party mode is an application whose operation is permitted (hereinafter also referred to as an “operation permission application”). Is set. As a result, the user returns to the home screen, touches the semi-restricted button, and then displays the screen of a specific application on the display 3, and then the operation permission application (as a result, the operation is performed). (Application not allowed) can be selected. Therefore, the function of setting and restricting the third-party mode more easily without requiring a complicated operation such as selecting the “third-party mode” item from the menu screen in advance and selecting the function to be further restricted one by one. Selection can be made.

  Thus, for example, when the user wants to show the map application to another person in a hurry toward the destination, the user returns to the home screen, touches the semi-limit button, and then displays the map application screen. By simply performing a simple operation such as displaying on the display 3, the cellular phone 1a can be handed over to another person without worrying about security issues.

  Further, according to the mobile phone 1a, when the user enters authentication information and the authentication is successful when the third mode is shifted to the restricted mode, the mode is changed from the restricted mode to the normal mode. That is, the third party mode is canceled by a natural simple operation of inputting authentication information. Therefore, in order to cancel the third party mode, there is no need for an operation to cancel the third party mode on the menu screen. Therefore, the third party mode can be canceled more easily. Such a cellular phone 1a is very effective particularly in a scene where it is sudden and it is desired to use the function restriction temporarily.

  As described above, according to the mobile phone 1a, it is possible to realize a display device that is convenient for the user while ensuring security.

  In the present embodiment, the timing when the restriction mode is set is set when the user performs an operation for screen transition (for example, tap of the home button 101b). It may be immediately after the screen is changed. Even if the screen transitions, if the restriction mode is set immediately after the transition and the authentication screen is displayed, the risk that the screen after the transition is known to a third party can be suppressed. Such a case is also included in the above-described case “the screen of the application displayed on the display 3 is changed to a screen other than the screen of the application including the displayed screen”.

(Second Embodiment)
Next, a mobile phone 1b according to a second embodiment of the present invention will be described. The mobile phone 1b according to the present embodiment is different from the mobile phone 1a according to the first embodiment in that the screen of the application displayed on the display 3 based on the input by the user immediately after the third party mode is set, The restriction mode is also set when transitioning to another screen of the same application. Note that the appearance and electrical configuration of the mobile phone 1b are the same as those shown in FIGS.

  FIG. 13 is a flowchart for explaining the third-party mode processing in the mobile phone 1b according to the present embodiment. In the flowchart of FIG. 13, the same processes as those shown in the flowchart of FIG. As shown in FIG. 13, the control unit 11 of the mobile phone 1b according to the present embodiment determines whether or not a screen transition has been performed in Step 11 and determines that a screen transition has been performed (S12: YES). The operation mode of the telephone 1b is set to the restriction mode (FIG. 11: S16).

  According to the mobile phone 1b according to the present embodiment, even when the screen of the application displayed on the display 3 based on the input by the user immediately after the third party mode is set, the screen is changed to another screen of the same application. Since the mode is set, the owner of the mobile phone 1b is informed of information that the third party intentionally or unintentionally changes information that the third party does not want to be known. Can be suppressed. For example, when the owner wants a third party to read a specific received mail, the owner can prevent other third party from seeing another received mail.

  In order to realize this, the owner of the mobile phone 1b displays, for example, a screen for permitting a third party to browse (hereinafter also referred to as “browsing permission screen”) on the display 3, and then the third party mode. Then, the browsing permission screen may be displayed again. For example, the owner of the mobile phone 1b displays a browsing permission screen on the display 3, taps the home key 103b to shift to the home screen, and then sets the “ON” area of the third party mode setting button 102 on the home screen. Set the third party mode by tapping. Then, after setting the third party mode, when the icon 101 corresponding to the application that can display the browsing permission screen arranged on the home screen is tapped, the owner again displays the browsing permission screen on the display 3. Can be displayed. If it is handed over to the third party in this state, the third party is only allowed to view the displayed screen, so the owner can hand over the mobile phone 1b to the third party with peace of mind.

  In the mobile phone 1b according to the present embodiment, in addition to allowing a third party to browse a specific received mail as described above, for example, in an album application, after displaying a specific photo on the display 3, If the third party mode is set and then the photograph is displayed again, the third party can be permitted to view only a specific photograph.

<Modification 1>
According to the mobile phone 1b according to the second embodiment, the screen of the application displayed on the display 3 based on the input by the user immediately after the third party mode is set may change to another screen of the same application. Since the restriction mode is set, security is improved, but inconvenience may occur. For example, when a specific received mail is displayed on the display 3 immediately after the third party mode is set, if the mail is a long sentence, it may not be possible to read all the text only on the displayed screen. Therefore, only the screen transition by the scroll operation is permitted, that is, when the screen is transitioned by the scroll operation, the mode may not be shifted to the restriction mode.

  In addition, when the browser is displayed on the display 3 immediately after the third party mode is set, the restriction mode is set when an operation is performed on the displayed screen and a screen having a URL other than the same URL is displayed. May be.

<Modification 2>
In the mobile phones 1a and 1b described above, when shifting from the third party mode to the restricted mode, the screen (transition screen) that the user tried to display on the display 3 in the third party mode is saved, When the security lock is released and the mode is changed to the normal mode, a screen to display the screen is displayed.

  However, instead of displaying the transition screen when the mode is changed to the normal mode, the transition screen may be displayed when the application is executed again after the mode is changed to the normal mode. In addition, the history of at least one of the user's operations and the transition destination screen when transitioning from the third party mode to the restricted mode is saved, and what operation has been performed or what screen is to be transitioned to It may be possible to confirm later.

<Modification 3>
In addition, the user may be able to set conditions for shifting to the restriction mode in the third party mode. For example, on the home screen, a menu button for setting conditions may be displayed in addition to a button for turning on or off the third party mode setting. By using this menu button, the user can change the conditions for shifting from the third party mode to the restricted mode. (1) When the screen displayed on the display 3 transitions to the home screen or the screen of another application ( 2) When the screen displayed on the display 3 transitions to another screen regardless of whether the transition destination screen is the screen of the same application, the screen transition by scroll operation is included in (3) and (2) It may be possible to select from conditions such as

  Although the present invention has been described and illustrated in detail, it is clear that it has been used merely as an illustration and example and should not be construed as limiting, and the spirit and scope of the present invention are attached Limited only by the wording of the claims.

1: Mobile phone 2: Case 3: Display 4: Touch panel 5: Microphone 6: Call speaker 7: External speaker 8: Imaging lens

Claims (8)

A display device capable of setting a normal mode, a restricted mode in which at least some functions are restricted, and a semi-restricted mode that can be taken before transitioning from the normal mode to the restricted mode,
A display unit;
A reception unit that receives input from the user;
When the predetermined input is received by the receiving unit, the semi-restricted mode is set, and a screen displayed on the display unit based on an input by the user immediately after the semi-restricted mode is set satisfies a predetermined condition A display device comprising: a setting unit that sets the restriction mode when transitioning to a screen other than.   The screen satisfying the predetermined condition is one screen of one or more screens of the application including the screen of the application displayed on the display unit based on the input by the user immediately after the semi-restricted mode is set. The display device according to claim 1.   The display device according to claim 1, wherein the screen that satisfies the predetermined condition is a screen that is displayed on the display unit based on an input by a user immediately after the semi-restricted mode is set. When the restriction mode is set, the display unit displays an authentication screen that prompts the user to input authentication information,
When an input of the authentication information is received, an authentication unit that performs authentication based on the authentication information is provided.
The display device according to claim 1, wherein the setting unit sets the normal mode when authentication by the authentication unit is successful.   The setting unit according to any one of claims 1 to 4, wherein the setting unit sets the restriction mode when receiving an instruction to display a screen other than the screen satisfying the predetermined condition in the semi-restriction mode. Display device.   In the semi-restricted mode, the setting unit sets the restricted mode when a screen is displayed on the display unit based on an input by a user and then an incoming screen is displayed on the display unit due to an incoming call from the outside. The display device according to claim 1, wherein the display device is set. The reception unit includes a touch panel that receives a user's touch operation on the display unit,
The display unit can display a setting button for setting the semi-restricted mode on the standby screen,
The display device according to claim 1, wherein the setting unit sets the semi-restricted mode when an operation of touching the setting button is received by the touch panel. In a display device including a display unit and a receiving unit that receives an input from a user, a normal mode, a limited mode in which at least some functions are limited, and a semi-restricted mode that can be taken before shifting from the normal mode to the limited mode Is a display method that can be set,
An accepting step for accepting a predetermined input by the accepting unit; and a semi-restricted mode setting step for setting the semi-restricted mode upon accepting the predetermined input;
A display step of displaying a screen on the display unit based on an input by a user immediately after the semi-restricted mode is set;
And a restriction mode setting step of setting the restriction mode when a screen displayed on the display unit based on an input by the user transitions to a screen other than a screen satisfying a predetermined condition.

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