JP2012058909A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic device which can improve operability for both operations using a touch panel and an input device.SOLUTION: A touch panel input mode and an input device input mode are provided as screen mode. Also, two display screens are prepared: a display screen for the touch panel input mode which includes display of virtual operation elements to accept user operations through manipulation of operation elements of an input device 5 in place of manipulation of the operation elements; and a display screen for the input device input mode which does not include the display of the virtual operation elements. When a user operation using the input device 5 is performed while the display screen for the touch panel input mode is being displayed, the screen mode is switched to the input device input mode. When a user operation using a touch panel 1 is performed while the display screen for the input device input mode is being displayed, the screen mode is switched to the touch panel input mode.

Description

  The present invention relates to a technique for controlling a user interface in an electronic device that uses both a touch panel and an input device including a plurality of operators for receiving user operations.

  In an electronic device that uses both a touch panel and an input device including a plurality of operators (switches, etc.) for accepting a user operation, a technique for controlling a user interface includes a touch panel and a remote controller including a plurality of operators. In an electronic device that uses both of them for accepting user operations, a mark indicating a position that can be operated by a remote control on the display screen, or a mark that indicates a button that can be currently operated by the remote control among the buttons displayed on the display screen. A technique for deleting the above-described display of the cursor and mark when receiving an operation on the touch panel while being displayed above is known (for example, Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 05-207656 JP 2005-332190 A

  In an electronic device that uses both a touch panel and an input device including a plurality of operators for accepting user operations, each user accepting with an operator provided in the input device so that the electronic device can be operated only by operating the touch panel. A virtual operator (such as a display button) for receiving an operation instead of the operator is displayed on the display screen, and a user operation using the input device is received by receiving an operation of the operator of the input device. In general, a user operation using a touch panel is received by receiving a position input on the touch panel as an operation for a virtual operator displayed at the position input.

However, in such an electronic device, since the display screen is used for both the touch panel and the input device, the design and configuration of the display screen can be optimized for touch panel input. It cannot be optimized for input.
That is, for example, since the display of the virtual operator on the display screen is useless for the user when performing an operation using the input device, the display screen is displayed for a user who uses only such an input device. It is originally desirable for the user to fully utilize it for displaying other significant information. In addition, the display of the cursor indicating the operable position on the current display screen by the input device is unnecessary for the user when performing an operation using the touch panel, that is, an operation of directly touching a desired operation position on the display screen. The display of the cursor may confuse the user instead.

For this reason, there may be cases in which sufficiently good operability cannot be provided for a user who uses a touch panel for input of a user operation and a user who uses an input device for input of a user operation. It was.
Therefore, the present invention uses a touch panel for input of user operations and an input device for input of user operations in an electronic device that uses both of the touch panel and an input device including a plurality of operators for accepting user operations. It is an object to further improve the operability for both electronic devices of the user.

  In order to achieve the above object, the present invention provides an electronic device including a display, a touch panel disposed on a display surface of the display, and an input device having a plurality of operators. A first user operation accepting unit that accepts a user operation corresponding to the operator, and a virtual operator that defines one of the user operations corresponding to the operator of the input device. As a virtual operator, a first display screen including display of one or a plurality of the virtual operators, and at least some of the virtual operators including a display on the first display screen, or Display screen display means for selectively displaying one of the second display screens not including display of all virtual controls on the display, and a user corresponding to the touch operation of the touch panel A second user operation accepting unit for accepting an operation, and the second user operation accepting unit is defined for the virtual operator according to a touch operation of the touch panel on the virtual operator displayed on the second user operation accepting unit. Including the virtual operator operation accepting means for accepting a user operation, when the first display screen is displayed on the display screen display means, or the operation of the operator of the input device or the first user When the user operation is accepted by the operation accepting unit, the display on the display is updated to the display on the second display screen.

  According to such an electronic device, when an operation by the operator of the input device occurs during the display of the first display screen including the display of the virtual operator used for input on the touch panel, the subsequent input is input. An input device that is assumed to be performed using a device and does not include display of at least some of the virtual operators or all virtual operators of the virtual operators that are displayed on the first display screen. The display is updated to the second display screen adapted by the operation of.

Therefore, for a user who uses the input device for input, a second display screen that is more adapted to the operation by the input device can be provided, and the operability can be improved.
Here, in such an electronic device, the display screen display unit is configured to display the second display screen, and the touch operation of the touch panel or the user operation by the virtual operator operation reception unit is displayed. It is preferable that the display on the display is updated to the display on the first display screen when the acceptance of the above occurs.

By doing in this way, it is possible to provide a first display screen including a virtual operator for enabling an operation using the touch panel instead of the input device to a user who uses the touch panel for input. become able to.
The second display screen includes a cursor display indicating a target on the second display screen of a user operation received by the first user operation receiving means, and the first display screen is a display of the cursor. May not be included.
By doing so, it is possible to improve the operability of the first display screen as being more adapted to the operation by the touch panel.

  As described above, according to the present invention, in an electronic apparatus that uses both a touch panel and an input device including a plurality of operators for accepting user operations, a user who uses a touch panel to input user operations and an input of user operations In addition, the operability of the user who uses the input device for both electronic devices can be further improved.

It is a block diagram which shows the structure of the electronic device which concerns on embodiment of this invention. It is a flowchart which shows the screen mode control process which concerns on embodiment of this invention. It is a figure which shows the example of the input device and display screen which concern on embodiment of invention. It is a figure which shows the example of the input device and display screen which concern on embodiment of invention. It is a figure which shows the example of the input device and display screen which concern on embodiment of invention.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 shows a configuration of an electronic apparatus according to this embodiment.
As shown in the figure, an electronic device according to the present embodiment includes a touch panel 1, a touch panel controller 2, a display 3, a display controller 4 that controls display on the display 3, an input device 5 that includes a plurality of operators (switches, etc.), An input device interface 6, a CPU 7, a memory 8, a storage device 9 such as an HDD, and other peripheral devices 10 are provided.

  Here, the touch panel 1 is disposed so as to overlap the display surface of the display 3. The touch panel controller 2 is a device that controls the touch panel 1, and outputs coordinates representing the position on the touch panel 1 touched by the user to the CPU 7 when the user touches the touch panel 1.

The input device interface 6 is connected to the input device 5 wirelessly or by wire, detects a user operation on the operation element of the input device 5, and outputs it to the CPU 7.
Then, the CPU 7 executes a program stored in the storage device 9 to display a display screen for displaying information to the user and accepting a user operation, and a user interface providing process for accepting the user operation, and a user interface The CPU 7 executes main processing for performing control and information processing according to the received user operation by displaying information to the user and receiving a user operation using the function of the providing process.

Hereinafter, such user interface provision processing will be described.
Here, the user interface providing process includes a touch panel input mode and an input device input mode as screen modes. As display screens used by the user interface providing process, two display screens, a display screen for a touch panel input mode and a display screen for an input device input mode, are prepared in advance for each type of display screen.

  Here, the difference between the display screen for the touch panel input mode of the same type and the display screen for the input device input mode is basically that the display screen for the touch panel input mode includes the input device 5 when the display screen is displayed. The display screen for the touch panel input mode includes a display of a virtual operation element (display button or the like) for receiving each user operation received by the operation element instead of the operation element. The display screen for the mode does not include the display of all or a part of the virtual controls included in the display screen for the touch panel input mode, and the display screen for the input device input mode Among the operation reception items displayed on the display screen, a cursor display indicating an operation reception item that can be input by the input device 5 at the time is included. Respect, the point does not include a display of the cursor on the display screen of the touch panel input mode.

FIG. 2 shows a procedure of user interface provision processing.
As shown in the figure, in this process, first, the screen mode is set to the touch panel input mode (step 202).
Then, generation of a user operation using the input device 5 (step 204), generation of a user operation using the touch panel 1 (step 206), reception of a request for switching the display screen type from the main process (step 204) 208) is monitored.
Here, the detection of the user operation using the input device 5 is performed on the type of the operator and the operator when the input device interface 6 detects the user operation of the operator of the input device 5. This is performed by assuming that a user operation of a predefined type has occurred for a set with the operation content. However, when the input device interface 6 detects a user operation of the operator of the input device 5, it is assumed that a user operation using the input device 5 has occurred unconditionally, and the subsequent processing is performed. Good.

  In addition, the detection of the occurrence of a user operation using the touch panel 1 is performed when the coordinates of the touch position of the user output by the touch panel controller 2 are the coordinates in the operation reception item on the display screen or the display area of the virtual operator. Further, it is assumed that a predefined type of user operation has occurred for an operation reception item or a virtual operator that includes coordinates in the display area. However, when the touch panel controller 2 detects the occurrence of a touch on the touch panel 1, it may be assumed that a user operation using the touch panel 1 has occurred unconditionally, and the subsequent processing may be performed.

  When a user operation using the input device 5 occurs (step 204), it is checked whether or not the current screen mode is the touch panel input mode (step 210). If it is not the touch panel input mode, the process proceeds to step 218. On the other hand, if the input mode is the touch panel input mode (step 210), the screen mode is switched to the input device input mode and the screen mode change flag is set (step 212), and the process proceeds to step 218.

  On the other hand, when a user operation using the touch panel 1 occurs (step 206), it is checked whether the current screen mode is the input device input mode (step 214). If it is not the input device input mode, the process proceeds to step 218. . On the other hand, if it is the input device input mode input mode (step 214), the screen mode is switched to the touch panel input mode and the screen mode change flag is set (step 216), and the process proceeds to step 218.

  If the process proceeds from step 210, 212, 214, or 216 to step 218 as described above, the display screen type is switched in response to the user operation last detected in step 204 or step 206. It is checked whether or not switching of the display screen type is defined as a response operation of the user operation (step 218), and if necessary, for the touch panel input mode of the type to be displayed after switching. Of the display screen and the display screen for the input device input mode, the display is updated to the display screen for the currently set screen mode (step 220). Then, the process proceeds to Step 222.

  On the other hand, if it is determined that it is not necessary to switch the display screen type according to the user operation last detected in step 204 or 206 (step 218), whether or not the screen mode change flag is set. If it is not set, the process proceeds to step 222. If it is set, the touch panel input mode display screen of the currently displayed display screen type and the input device input mode display screen are displayed. After updating the display on the display screen for the currently set screen mode (step 230), the process proceeds to step 222.

  If the process proceeds to step 222 in this way, the screen mode change flag is cleared. Next, it is examined whether it is necessary to notify the main process of the user operation last detected in step 204 or step 206 (step 224). If not, the process returns to monitoring in steps 204-208. If notification is necessary, the user operation is notified to the main process (step 226), and the process returns to the monitoring of steps 204-208.

  On the other hand, when the reception of the request for switching the display screen type from the main process is detected during the monitoring in steps 204-208 (step 208), the touch screen input mode display screen and the input device of the requested type are detected. Of the display screens for the input mode, after updating the display on the display screen for the currently set screen mode (step 232), the process returns to the monitoring of steps 204-208.

The user interface provision process has been described above.
Hereinafter, a specific operation example of such user interface providing processing will be described.
First, an example in which the electronic device is a music playback device that plays music will be described.
In this case, the electronic device stores music for each album in the storage device 9, and the main process described above is processing for reproducing and outputting the music stored in the storage device 9.
Further, as shown in FIG. 3a, the input device 5 has a rotary switch 301 that can be operated as a control, a play / pause key 302, a forward skip key 303, a backward skip key 304, a search key 305, a volume up, and the like. A key 306, a volume down key 307, and the like are provided.

  Next, FIG. 3B shows a first type of display that the interface providing process displays for receiving information on the music being played back and accepting a playback control operation for the music when the touch panel input mode is set as the screen mode. As shown in the figure, the display screen of the first type in the touch panel input mode includes a song information 311 such as a title of a song being played, an album or an artist, and a storage device associated with the song. 9 is displayed. In addition, a play / pause button 313, a forward skip button 314, a backward skip button 315, a search button 316, a volume up button 317, and a volume down button 318 are displayed as virtual operators.

  Next, FIG. 3c shows a first type of display screen displayed by the interface providing process when the input device input mode is set as the screen mode. As shown in FIG. The first type display screen erases the display of the virtual operator provided on the first type display screen in the touch panel input mode shown in FIG. 3b, and displays the music information 311, the artwork 312 and their display areas. It has been expanded.

  Then, in the user interface providing process, when the first type display screen of the touch panel input mode of FIG. 3B is displayed, the operation of each operator of the user input device 5 and each virtual operation of the user touch panel 1 are performed. The touch of the child display area is received as a user operation, and processing corresponding to the received user operation is performed.

  That is, for example, in response to the user's operation of the play / pause key 302 of the input device 5 and the touch of the display area of the user play / pause button 313, the main process is notified of the occurrence of the play / pause operation. By doing this, the playback state of the music is switched between playback and pause.

When the first type display screen of the input device input mode of FIG. 3c is displayed, the operation of each operator of the input device 5 of the user is received as a user operation, and processing according to the received user operation I do.
That is, for example, in response to the user's operation of the playback / pause key 302 of the input device 5, the main process is notified of the occurrence of the playback / pause operation, so that the playback state of the music can be changed between playback and pause. Switch between them.
Next, when the first type display screen of the touch panel input mode of FIG. 3B is displayed and the user touches the display area of the search button 316, the screen mode is maintained in the touch panel input mode. The user interface providing process displays the second type display screen for album search shown in FIG. 4a1. As shown in the figure, the display screen of the second type in the touch panel input mode includes a list 401 in which album information is arranged in alphabetical order as items, a scroll button 402, and an alphabetic index 403. In addition, each album information displayed as an item in the list 401 is an operation reception item capable of receiving a user operation.

On the other hand, when the user operates the search key 305 of the input device 5 while the first type display screen of the touch panel input mode of FIG. 3b is displayed, the screen mode is changed from the touch panel input mode to the input device input mode. The user interface providing process displays the second type display screen for album search in FIG. 4b1. Also, when the user operates the search key 305 of the input device 5 while the first type display screen of the input device input mode of FIG. 3c is displayed, the screen mode is changed to the input device input mode. While maintaining, the user interface providing process displays the second type display screen for album search of FIG. 4b1.
As shown in the figure, the second type display screen in the input device input mode includes a list 411 in which album information is arranged in an arc in alphabetical order as items, and a list cursor 412. Further, the second type display screen in the input device input mode does not include the scroll button 402 and the alphabet index 403 provided in the second type display screen in the touch panel input mode of FIG. 4a1. In addition, each album information displayed as an item in the list 411 is an operation reception item capable of receiving a user operation. The list cursor 412 indicates album information of albums that can be determined by the push operation of the rotary switch 301 of the input device 5 on the list 411.

  Now, when the display screen of the second type of the touch panel input mode in FIG. 4a1 is displayed, the user interface providing process, when the user touches the display area on the album information list 401 of the desired album, The determination operation for the album of information is accepted, and the main process is performed to reproduce each piece of music in the album, and the display is updated to the first type display screen in the touch panel input mode shown in FIG. Also, when the user touches the display area of the scroll button 402 while the second type display screen of the touch panel input mode of FIG. 4a1 is displayed, the user interface providing process accepts the scroll operation of the list 401, Scroll through the list 401. Also, when the user rotates the rotary switch 301 of the input device 5 while the second type display screen of the touch panel input mode of FIG. 4a1 is displayed, the user interface providing process changes the screen mode to the input device input mode. The display is updated to the second type display screen of the input device input mode in FIG. 4b1, and the album information included in the list 411 on the second type display screen of the input device input mode after the update is updated. After making the same state as the album information included in the list 401 of the second type display screen in the touch panel input mode, this is scrolled. Further, when the second type display screen of the touch panel input mode of FIG. 4a1 is displayed, if one alphabet display area in the alphabet index 403 is touched by the user, the user interface providing process is touched. The list 401 is scrolled so that the album information of the first album starting from the alphabet is positioned at the top of the list 401. That is, for example, as shown in FIG. 4 a 2, if the display area of “P” in the alphabetic index 403 is touched by the user, the album information of the first album with P as the first character is placed at the top of the list 401. Scroll the list 401 to position it.

  On the other hand, when the second type display screen of the input device input mode in FIG. 4b1 is displayed, the user interface providing process performs a scrolling operation of the list 411 or a list operation when the user rotates the rotary switch 301 of the input device 5. In response to an operation of moving the list cursor 412, the list 401 or the list cursor 412 is scrolled. Also, when the user pushes the rotary switch 301 of the input device 5 while the second type display screen of the input device input mode of FIG. 4b1 is displayed, the user interface providing process causes the list cursor 412 at that time. 3 is received, and the main process is performed to reproduce the music of the album, and the display is updated to the first type display screen in the input device input mode shown in FIG. 3C. When the user touches the display area on the album information list 411 of the desired album while the second type display screen of the input device input mode in FIG. Accepting an operation for determining the album of the album information, causing the main process to play each song of the album, switching the screen mode to the touch panel input mode, and displaying the first type of the touch panel input mode shown in FIG. Update to the screen.

Further, in the user interface providing process, if the user continues the rotation operation of the rotary switch 301 of the input device 5 at a predetermined rotation speed or higher for a predetermined time or longer, an alphabet selection box 413 is displayed on the display screen as shown in FIG. Thereafter, one alphabetic character displayed in the alphabet selection box 413 is switched in alphabetical order according to the rotation operation of the rotary switch 301 of the user input device 5, and the push operation of the rotary switch 301 of the user input device 5 occurs. Then, the list 411 is scrolled so that the album information of the first album whose first character is the alphabet currently displayed in the alphabet selection box 413 is positioned at the top of the list 411. That is, for example, as shown in FIG. 4 b 2, when the user pushes the rotary switch 301 while the alphabet “P” is displayed in the alphabet selection box 413 by rotating the rotary switch 301, The list 411 is scrolled so that the album information of the current album is positioned at the top of the list 411.

The specific operation example of the user interface providing process when the electronic device is a music playback device that plays back music has been described above.
Next, a specific operation example of the user interface providing process when the electronic device is a navigation device will be described.
In this case, map data is stored in the storage device 9 of the electronic device, and a GPS receiver or the like is provided as the peripheral device 10. The main process described above is a process of presenting the current position on a map using a GPS receiver or calculating a route to the destination and displaying it on the map.
As shown in FIG. 5A, the input device 5 includes a joystick 501 that can be pushed, an increase / decrease key 502, a menu key 503, and the like as operators.
Next, FIG. 5b1 shows a display screen displayed by the interface providing process when the touch panel input mode is set as the screen mode. As shown, the display screen of the touch panel input mode includes a map. A guide image 510 representing the current position and map scale is displayed on the top, and a scale change button 511 and a menu button 512 are displayed as virtual operators.

  Next, FIG. 5c1 shows a display screen displayed by the interface providing process when the input device input mode is set as the screen mode. As shown in FIG. A guide image 510 representing the current position and distance scale is displayed above, but the virtual operator provided on the display screen of the touch panel input mode in FIG. 5b1 is not displayed.

  Then, the user interface providing process changes the map scale of the map of the guide image 510 if the user operates the scale change button 511 while the touch panel input mode display screen of FIG. 5b1 is displayed. If the user touches a position on the guide image 510 while the touch panel input mode display screen shown in FIG. 5b1 is displayed, the user interface providing process displays the guide image 510 as shown in FIG. 5b2. If the display of the cursor 521 indicating the center position is included and the 8-direction button 522 is displayed and the display area of the 8-direction button 522 is touched, the map of the guide image 510 and the current position are displayed according to the touched direction. Scroll. If the user operates the menu button 512, a predetermined menu including a destination setting menu item corresponding to the cursor 521 is displayed on the display screen.

  Further, the user interface providing process switches the screen mode to the input device input mode if the user operates the increase / decrease key 502 of the input device 5 while the touch screen input mode display screen of FIG. The display is updated to the display screen of the input device input mode 5c1, and after the guide image 510 is matched with the guide image 510 of the display screen of the touch panel input mode before update, the map scale of the map of the guide image 510 is changed. To do. If the user operates the menu key 503 of the input device 5 while the display screen of the touch panel input mode in FIG. 5b1 is displayed, the user interface providing process switches the screen mode to the input device input mode. The display is updated to the display screen of the input device input mode of 5c1, and after the guide image 510 is matched with the guide image 510 of the display screen of the touch panel input mode before the update, the predetermined menu is displayed on the display screen after the update. indicate. If the user operates the joystick 501 of the input device 5 while the display screen of the touch panel input mode in FIG. 5b1 is displayed, the user interface providing process switches the screen mode to the input device input mode, After the display is updated to the display screen of the input device input mode 5c1 and the guide image 510 is made to coincide with the guide image 510 of the display screen of the touch panel input mode before the update, the center position is displayed on the guide image 510 as shown in FIG. 5c2. In addition, the map of the guide image 510 and the current position are scrolled according to the operation direction of the joystick 501.

  Next, in the user interface providing process, if the user operates the increase / decrease key 502 of the input device 5 while the input device input mode display screen of FIG. Change the scale. If the user operates the menu key 503 of the input device 5 while the input device input mode display screen of FIG. 5c1 is being displayed, the user interface providing process displays the updated predetermined menu. Display on the screen. If the user operates the joystick 501 of the input device 5 while the display screen of the input device input mode of FIG. 5c1 is displayed, the user interface providing process performs the guidance image 510 as shown in FIG. 5c2. Includes a display of the cursor 521 representing the center position, and scrolls the map of the guide image 510 and the current position according to the operation direction of the joystick 501. If the user touches a position on the guide image 510 while displaying the display screen of the input device input mode of FIG. 5c1, the user interface providing process switches the screen mode to the touch panel input mode, After the display is updated to the display screen of the touch panel input mode of 5b1 and the guide image 510 is made to coincide with the guide image 510 of the display screen of the input device input mode before the update, as shown in FIG. In addition to including the display of the cursor 521 representing the position, the 8-direction button 522 is displayed. If the display area of the 8-direction button 522 is touched, the map of the guide image 510 and the current position are scrolled according to the touched direction. To do.

The specific operation example of the user interface providing process when the electronic device is the navigation device has been described above.
As described above, according to the present embodiment, when an operation by the operator of the input device 5 occurs during the display of the display screen in the touch panel input mode including the display of the virtual operator used for the input of the touch panel 1. By the input device 5, it is assumed that the subsequent input is performed using the input device 5, and does not include at least a part of the virtual operator display among the virtual operators included in the display on the touch panel input mode display screen. The display is updated on the display screen of the input device input mode adapted to the operation.

Therefore, a user who uses the input device 5 for input can be provided with a display screen of an input device input mode adapted to the operation by the input device 5, and the operability can be improved.
On the other hand, when the operation of the touch panel 1 occurs during the display of the display screen of the input device input mode, it is estimated that the subsequent input is performed using the touch panel 1, and the user replaces the input device 5 with the user. The display is updated to the display screen of the touch panel input mode including the display of the virtual operator for accepting the operation on the touch panel 1.

  Therefore, a user who uses the touch panel 1 for input can be provided with a display screen in a touch panel input mode adapted to an operation using the touch panel 1, and the operability can be improved.

  DESCRIPTION OF SYMBOLS 1 ... Touch panel, 2 ... Touch panel controller, 3 ... Display, 4 ... Display controller, 5 ... Input device, 6 ... Input device interface, 7 ... CPU, 8 ... Memory, 9 ... Storage device, 10 ... Peripheral device.

Claims (4)

An electronic device comprising a display, a touch panel arranged on a display surface of the display, and an input device having a plurality of operators,
First user operation accepting means for accepting a user operation corresponding to the operator in response to an operation of the operator of the input device;
A first display screen including a display of one or more of the virtual operators, with a virtual operator defined as one of the user operations corresponding to the operator of the input device as a virtual operator; One of the virtual operation elements whose display is included in the first display screen and one of the second display screens that does not include the display of all virtual operation elements is selectively displayed. Display screen display means for displaying on,
Second user operation accepting means for accepting a user operation corresponding to the touch operation of the touch panel,
The second user operation accepting means includes virtual operator operation accepting means for accepting a user operation defined for the virtual operator in response to a touch operation of the touch panel on the displayed virtual operator. ,
The display screen display means displays an operation of an operator of the input device or an acceptance of the user operation by the first user operation acceptance means while displaying the first display screen. An electronic device, wherein the display on the display is updated to the display on the second display screen. The electronic device according to claim 1,
The display screen display means displays the second display screen when the touch operation of the touch panel or the acceptance of the user operation by the virtual operator operation acceptance means occurs. The display is updated to the display on the first display screen. The electronic device according to claim 1 or 2,
The second display screen includes a cursor display indicating a target on the second display screen of a user operation received by the first user operation receiving means, and the first display screen includes a display of the cursor. Electronic equipment characterized by the absence. A computer program that is read and executed by a computer,
A computer program for causing the computer to function as the electronic device according to claim 1, 2 or 3.