JP2011076349A - Portable information terminal and display control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique for simplifying an operation of changing display image, while suppressing the scale of hardware, in a touch-panel type portable information terminal. <P>SOLUTION: The portable information terminal includes a display means having a display screen for displaying an image; a touch panel type input means for sensing a contact with the display screen; a tilt detection means for detecting the inclination of the terminal itself to generate inclination information indicating the direction of the inclination; and the amount of the inclination; and a control means for changing the image displayed on the display means, based on the inclination information regarding the inclination detected, while maintaining the contact by a predetermined touch operation to the display screen. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a portable information terminal including a touch panel type input unit configured integrally with a display unit.

  A portable information terminal represented by a mobile phone, a PDA (Personal Digital Assistant), and an electronic notebook generally has a display unit for displaying text and images on a display screen such as a liquid crystal display, and an input for inputting commands and data by a user operation. Department.

  Some portable information terminals employ a touch panel type as an input unit. For example, Patent Document 1 discloses an information terminal in which a touch panel type is adopted as an input unit. By adopting the touch panel type, the screen size can be increased with respect to the device size as compared with the case where the display unit and the input unit are arranged at different positions.

  However, when a touch panel type is adopted as an input part of a product that is usually held with one hand like a mobile phone, both hands are required depending on the operation, and the operability for the user is impaired. For example, in a touch panel type portable information terminal, an operation for enlarging or reducing a display image is generally performed with two fingers. In these portable information terminals, the display image is enlarged by spreading the two fingers that the user has brought into contact with the touch panel. On the other hand, the display image is reduced by narrowing the two fingers that are in contact with the touch panel by the user. When the user performs such enlargement / reduction operations, the user holds the portable information terminal with one hand and performs a touch operation with two fingers of the other hand, so both hands are required.

  A technique for enlarging and displaying a part of an image displayed on a touch panel type portable information terminal is disclosed in Patent Document 1. The technique disclosed in Patent Document 1 displays a plurality of buttons arranged two-dimensionally, and changes the ratio of the display sizes of the plurality of buttons according to the inclination of the device. When the technique disclosed in Patent Document 1 is used, the user can enlarge and display a desired button by tilting the portable information terminal and can easily select the button.

  Patent Document 2 discloses a technique for changing the scale of a map displayed on a portable map display device. In the technique disclosed in Patent Literature 2, an operation for tilting the portable map display device is detected by an acceleration sensor, and the scale of the map to be displayed is changed according to the detected operation amount. In the technique disclosed in Patent Document 2, it is possible to switch whether or not to enable the map scale change operation by providing a separate operation button. The portable map display device of Patent Document 2 invalidates the map scale changing operation when the operation button is not pressed, and enables the map scale changing operation when the operation button is pressed.

  Patent Document 2 also discloses a technique for scrolling a map displayed on a portable map display device. In the technique disclosed in Patent Document 2, a map to be displayed is scrolled according to an operation amount for tilting the portable map display device detected by the acceleration sensor.

WO2007 / 007682 publication JP 2008-304741 A

  In the technique disclosed in Patent Document 1 described above, only when a plurality of buttons are displayed side by side in two dimensions, the ratio of the display size of the plurality of buttons is controlled according to the inclination of the device. The displayed image cannot be easily enlarged or reduced.

  In the technique disclosed in Patent Document 2 described above, unless the operation button is provided, the map is changed or scrolled every time the portable map display device is tilted. The image is changed. Conversely, in order not to change the scale or scroll the map even when the portable map display device is tilted, it is necessary to provide a separate operation button, which increases the scale of hardware.

  An object of the present invention is to provide a technique for simplifying an operation of changing a display image while suppressing the size of hardware in a touch panel type portable information terminal.

  In order to achieve the above object, the portable information terminal of the present invention detects a tilt of the own device, a display unit having a display screen for displaying an image, a touch panel type input unit for detecting contact with the display screen. , Based on inclination information about inclination detected in a state where contact by a predetermined touch operation on the display screen is maintained, and inclination detection means for generating inclination information indicating the direction of the inclination and the magnitude of the inclination, Control means for changing an image displayed on the display means.

  In order to achieve the above object, the display control method of the present invention is a display control method in a portable information terminal having a touch panel display screen, wherein the input means senses a contact with the display screen and tilts. The detection means detects the inclination of the device itself, generates inclination information indicating the direction of the inclination and the magnitude of the inclination, and the control means detects in a state in which contact with the display screen is maintained by a predetermined touch operation. The image displayed on the display screen is changed based on the tilt information about the tilt.

  ADVANTAGE OF THE INVENTION According to this invention, operation which changes a display image can be simplified in the touchscreen type portable information terminal, suppressing the scale of hardware.

It is a block diagram which shows the structure of the portable information terminal in 1st Embodiment. It is a figure for demonstrating the state in which the portable information terminal was inclined leftward. It is a figure for demonstrating the state in which the portable information terminal was inclined rightward. It is a figure for demonstrating the state in which the portable information terminal was tilted downward. It is a figure for demonstrating the state in which the portable information terminal was tilted upward. It is a figure for demonstrating 1st touch operation. It is a figure for demonstrating the display of the pointer to the point in which the 1st touch operation was performed. It is a figure for demonstrating the display of a pointer when a portable information terminal is tilted. It is a figure for demonstrating a display when the touched finger leaves | separated from the touch panel. It is a figure for demonstrating 2nd touch operation. It is a figure for demonstrating the display of the pointer to the point in which 2nd touch operation was performed. It is a figure for demonstrating 3rd touch operation. It is a figure for demonstrating the display of a pointer when a portable information terminal is tilted. It is a figure for demonstrating a display when the touched finger leaves | separated from the touch panel. It is a flowchart which shows a process when the control part 4 shown in FIG. 1 expands a display image. It is a flowchart which shows a process when the control part 4 shown in FIG. 1 reduces a display image. It is a figure for demonstrating 4th touch operation. It is a figure for demonstrating the display of the pointer to the point in which the 4th touch operation was performed. It is a figure for demonstrating the display of a pointer when a portable information terminal is tilted. It is a figure for demonstrating a display when the touched finger leaves | separated from the touch panel. It is a flowchart which shows a process when the control part 4 shown in FIG. 1 scrolls a display image.

  The portable information terminal of the present embodiment has a display screen and a touch panel arranged on the display screen. When a predetermined touch operation is performed on the touch panel, the portable information terminal according to the present embodiment changes the display image based on the tilt direction and size of the own device.

  Next, the present invention will be described in detail with reference to the drawings.

(First embodiment)
When a predetermined touch operation is performed on the touch panel, the portable information terminal according to the present embodiment displays a pointer at a point where the touch operation is performed. Then, the portable information terminal moves the pointer in the direction in which the device is tilted, and enlarges or reduces the display image according to the distance between the point where the touch operation is performed and the pointer.

  FIG. 1 is a block diagram showing the configuration of the portable information terminal according to the first embodiment.

  As shown in FIG. 1, the portable information terminal 10 in the first embodiment includes a display unit 1, an input unit 2, an inclination detection unit 3, a control unit 4, and a storage device 5.

  The display unit 1 is a display device having a display screen for displaying an image. The display unit 1 displays an image according to an instruction from the control unit 4.

  The input unit 2 is an input device having a touch panel arranged on the display screen of the display unit 1. The input unit 2 detects a touch from the user and notifies the control unit 2 of touch information indicating a touch state. The touch information includes information on whether or not the touch is made and information on the touched coordinates.

  The inclination detection unit 3 is a sensor that detects an inclination from the acceleration of its own device, such as an acceleration sensor. The inclination detection unit 3 generates inclination information indicating the direction in which the apparatus is inclined and the magnitude of the inclination. Further, the tilt detection unit 3 notifies the control unit 4 of tilt information in response to a request from the control unit 4.

  2A to 2D are diagrams for explaining a state where the portable information terminal is tilted. The upper diagrams of FIGS. 2A to 2D are diagrams of the portable information terminal in a horizontal state as viewed from below the display screen. The lower figure of FIG. 2A shows a state where the portable information terminal is tilted leftward. The lower diagram in FIG. 2B shows a state where the portable information terminal is tilted to the right. The lower part of FIG. 2C shows a state where the portable information terminal is tilted downward. The lower diagram in FIG. 2D shows a state where the portable information terminal is tilted upward.

  The control unit 4 controls the overall operation of the portable information terminal 10.

  The control unit 4 receives touch information from the input unit 2 and determines an operation performed by the user based on the received touch information. The operations performed by the user include a touch operation for touching the touch panel, a drag operation for moving the touched hand while touching the touch panel, a release operation for releasing the touched hand, and a double tap for touching the touch panel twice in a row. There are operations. The double tap operation is an operation corresponding to a double click with a mouse.

  In addition, the control unit 4 requests the display unit 1 to display a predetermined image.

  Further, the control unit 4 requests the tilt detection unit 3 for the tilt information of the own device, and receives the tilt information of the own device from the tilt detection unit 3.

  When a predetermined touch operation is performed on the touch panel, the control unit 4 displays a pointer at a point where the touch operation is performed. At this time, the control unit 4 moves the pointer according to the tilt information of the own device. Further, the control unit 4 enlarges or reduces the display image according to the distance between the point where the touch operation is performed and the pointer.

  The storage device 5 is a storage device for storing data used by the control unit 2 in calculation and image data output to the display unit 1.

  3A to 3D are diagrams for explaining an example of a user's operation when a display image is enlarged. First, as shown in FIG. 3A, the user touches a predetermined designated area (hereinafter referred to as a first touch operation). Then, as shown in FIG. 3B, the portable information terminal displays a pointer at the point where the first touch operation is performed. The user can confirm the point touched by the user with the pointer. In the example shown in FIG. 3B, an asterisk is used as a pointer, but any format such as a circle or an arrow may be used. Next, the user tilts the portable information terminal in either direction. Then, the portable information terminal moves the pointer in the tilted direction. FIG. 3C shows an example in which the user tilts the portable information terminal leftward and the pointer moves leftward. The portable information terminal enlarges the display image according to the distance between the point where the first touch operation is performed and the pointer. In the example illustrated in FIG. 3C, the portable information terminal enlarges the display image as the point where the first touch operation is performed and the pointer are separated. Finally, as shown in FIG. 3D, when the user releases the touched finger from the touch panel, the portable information terminal erases the display of the pointer while enlarging the display image.

  4A to 4E are diagrams for explaining an example of a user's operation when reducing a display image. First, as shown in FIG. 4A, the user double taps a predetermined designated area (hereinafter referred to as a second touch operation). Then, as shown in FIG. 4B, the portable information terminal displays a pointer at the point where the second touch operation is performed. The user can confirm the point where the user double-tapped with the pointer. Next, as shown in FIG. 4C, the user touches an area other than the designated area where the second touch operation has been performed (hereinafter referred to as a third touch operation). Next, the user tilts the portable information terminal in either direction. Then, the portable information terminal moves the pointer in the tilted direction. FIG. 4D shows an example in which the user tilts the portable information terminal to the left and the pointer moves to the left. The portable information terminal reduces the display image according to the distance between the point where the third touch operation is performed and the pointer. In the example shown in FIG. 4D, the portable information terminal reduces the display image as the point at which the third touch operation is performed and the pointer approach each other. Finally, as shown in FIG. 4E, when the user releases the touched finger from the touch panel, the portable information terminal erases the display of the pointer while reducing the display image.

  Next, processing when the control unit 4 shown in FIG. 1 enlarges the display image will be described.

  FIG. 5 is a flowchart showing processing when the control unit 4 shown in FIG. 1 enlarges the display image.

  The control unit 4 waits until the user performs a touch operation on the designated area (step S1). When receiving the touch information from the input unit 2, the control unit 4 determines whether or not the operation performed by the user is a touch operation based on the received touch information. When the operation performed by the user is a touch operation, the control unit 4 further determines whether or not the coordinate where the touch operation has been performed is in the designated area from the coordinate information included in the received touch information. When the coordinate where the touch operation is performed is in the designated area, the control unit 4 determines that the first touch operation is performed on the designated area.

  If it is determined that the first touch operation has been performed, the control unit 4 requests the display unit 1 to display an image in which a pointer is displayed at the coordinates where the first touch operation has been performed (step S2).

  Next, the control unit 4 requests the tilt detection unit 3 for tilt information of the device itself. When the control unit 4 receives the tilt information of the device itself from the tilt detection unit 3 (step S3), the control unit 4 moves the pointer in the display image based on the received tilt information (step S4). At this time, the control unit 4 moves the pointer toward the direction in which the device itself is tilted.

  Note that the speed at which the pointer is moved varies depending on the inclination of the device itself. The control unit 4 moves the pointer at a high speed when the inclination of the own apparatus is large, and moves the pointer slowly when the inclination of the own apparatus is small. Alternatively, the moving speed of the pointer may be constant regardless of the magnitude of the inclination.

  When the pointer in the display image is moved, the control unit 4 calculates a distance (hereinafter referred to as a first distance) between the position of the point where the first touch operation is performed and the current position of the pointer. (Step S5). When the first distance is calculated, the control unit 4 enlarges the display image according to the calculated length of the first distance (step S6). Note that the longer the first distance, the larger the ratio for enlarging the display image, and the shorter the first distance, the smaller the ratio for enlarging the display image.

  When the display image is enlarged, the control unit 4 determines whether or not a release operation has been performed by the user (step S7). When the touch information by the release operation has not been received from the input unit 2, the control unit 4 determines that the release operation has not been performed by the user, proceeds to step S3, and repeats the display image enlargement process. On the other hand, when the touch information by the release operation is received from the input unit 2, the control unit 4 determines that the release operation has been performed by the user, erases the pointer display (step S8), and ends the display image enlargement process. To do.

  When the display image enlargement process is completed, the control unit 4 proceeds to step S1 and waits until the first touch operation is performed again by the user.

  Next, processing when the control unit 4 shown in FIG. 1 reduces the display image will be described.

  FIG. 6 is a flowchart showing processing when the control unit 4 shown in FIG. 1 reduces the display image.

  The control unit 4 stands by until the user performs a double tap operation on the designated area (step S11). When receiving the touch information from the input unit 2, the control unit 4 determines whether or not the operation performed by the user based on the received touch information is a double tap operation. When the operation performed by the user is a double tap operation, the control unit 4 further determines whether or not the coordinate where the double tap operation has been performed is in the designated area from the coordinate information included in the received touch information. . When the coordinate where the double tap operation has been performed is in the designated area, the control unit 4 determines that the second touch operation has been performed on the designated area.

  If it is determined that the second touch operation has been performed, the control unit 4 requests the display unit 1 to display an image in which the pointer is displayed at the coordinates where the second touch operation has been performed (step S12).

  Next, the control unit 4 waits until a touch operation is performed in an area other than the designated area where the second touch operation is performed (step S13). When receiving the touch information from the input unit 2, the control unit 4 determines whether or not the operation performed by the user is a touch operation based on the received touch information. When the operation performed by the user is a touch operation, the control unit 4 further determines that the coordinate of the newly touched operation from the coordinate information included in the received touch information is the coordinate of the second touch operation. Determine whether they are different. When the newly touched coordinate is different from the coordinate of the second touch operation, the control unit 4 determines that the third touch operation has been performed.

  When determining that the third touch operation has been performed, the control unit 4 requests the tilt detection unit 3 for tilt information of the device itself. When receiving the tilt information of the device itself from the tilt detection unit 3 (step S14), the control unit 4 moves the pointer in the display image based on the received tilt information (step S15). At this time, the control unit 4 moves the pointer toward the direction in which the device itself is tilted.

  Note that the speed at which the pointer is moved varies depending on the inclination of the device itself. The control unit 4 moves the pointer at a high speed when the inclination of the own apparatus is large, and moves the pointer slowly when the inclination of the own apparatus is small. Alternatively, the moving speed of the pointer may be constant regardless of the magnitude of the inclination.

  When the pointer in the display image is moved, the control unit 4 calculates a distance (hereinafter referred to as a second distance) between the position of the point where the third touch operation is performed and the current position of the pointer. (Step S16). When the second distance is calculated, the control unit 4 reduces the display image according to the calculated length of the second distance (step S17). The shorter the second distance, the smaller the ratio for reducing the display image, and the longer the second distance, the larger the ratio for reducing the display image.

  When the display image is reduced, the control unit 4 determines whether or not a release operation has been performed by the user (step S18). When the touch information by the release operation has not been received from the input unit 2, the control unit 4 determines that the release operation has not been performed by the user, proceeds to step S14, and repeats the display image reduction process. On the other hand, when the touch information by the release operation is received from the input unit 2, the control unit 4 determines that the release operation has been performed by the user, erases the pointer display (step S19), and ends the display image reduction process. To do.

  When the display image reduction processing is completed, the control unit 4 proceeds to step S11 and waits again until the user performs the second touch operation.

  In the present embodiment, the portable information terminal has shown an example in which when the tilt of the device itself is detected while being touched on a predetermined area of the touch panel, the display image is enlarged or reduced according to the tilt. However, the present invention is not limited to this. The content that the portable information terminal changes the display image in accordance with the inclination of the device itself may be anything.

  Moreover, although the display part of the portable information terminal has shown the example in which the touch panel is arrange | positioned on the screen of a display in this Embodiment, this invention is not restrict | limited to this. The display unit of the portable information terminal may be anything as long as it senses contact with the display screen, and may be one in which a sensor capable of discriminating contact is built in the display panel.

  As described above, according to the present embodiment, the portable information terminal can display the display image according to the tilt direction and the size of the own device in a state where the touch operation is performed on the touch panel and the contact is maintained. Change the display contents. Thereby, the user can change the display content of the display image with one finger fixed with one hand. The portable information terminal can simplify the operation for changing the display content of the display image without providing hardware such as operation buttons.

  In addition, the user can designate an arbitrary area in the touch panel as an area to be touched to enlarge or reduce the display image, and can customize the area so as to be easy to use.

  In addition, when a predetermined touch operation is performed on the touch panel, the portable information terminal according to the present embodiment displays a pointer at a point where the touch operation is performed, and moves the pointer in a direction in which the own device is tilted. The image is enlarged or reduced according to the inclination of the image. Thereby, the user can confirm the state of enlargement / reduction with the pointer regardless of the content of the displayed image. For example, even if the image displayed on the screen is difficult for the user to visually recognize the enlargement or reduction, such as when the sea is displayed on the entire screen in the map display, the user can enlarge or reduce the image. Can be easily recognized.

  In addition, the portable information terminal according to the present embodiment changes the speed at which the pointer moves according to the inclination of the device itself, and changes the speed at which the image is enlarged or reduced. Thereby, the user can adjust the speed at which the display image is enlarged or reduced depending on the inclination of the apparatus.

  In addition, the portable information terminal of the present embodiment enlarges the display image as the point where the first touch operation is performed and the pointer are separated. Thereby, the user can change the enlargement ratio of the display image to a desired ratio sensuously.

  In addition, the portable information terminal according to the present embodiment reduces the display image as the point at which the third touch operation is performed and the pointer approach each other. Thereby, the user can change the reduction ratio of the display image to a desired ratio sensuously.

(Second Embodiment)
In the first embodiment, in the touch panel type portable information terminal, the display image is enlarged according to the distance between the point where the touch operation is performed and the pointer whose display position moves according to the tilt of the own device. An example of reduction is shown.

  For example, when browsing a home page using a Web browser, if the page is too long to be displayed on the portable information terminal at one time, the user performs a scroll operation to browse a portion not displayed on the portable information terminal. There is a need. In the second embodiment, an example in which the display image is scrolled according to the distance between the point where the touch operation is performed and the pointer whose display position moves according to the tilt of the own apparatus will be described.

  The basic configuration of the portable information terminal of the second embodiment is the same as the configuration of the portable information terminal of the first embodiment.

  However, the control unit 4 according to the second embodiment scrolls the display image according to the distance between the point where the touch operation is performed and the pointer.

  7A to 7D are diagrams for describing an example of a user operation when scrolling a display image. First, as shown in FIG. 7A, the user touches a predetermined designated area (hereinafter referred to as a fourth touch operation). Then, as shown in FIG. 7B, the portable information terminal displays a pointer at the point where the fourth touch operation is performed. The user can confirm the point touched by the user with the pointer. Next, the user tilts the portable information terminal in either direction. Then, the portable information terminal moves the pointer in the tilted direction. FIG. 7C shows an example in which the user tilts the portable information terminal downward and the pointer moves downward. The portable information terminal scrolls the display image according to the distance between the point at which the fourth touch operation is performed and the pointer. In the example illustrated in FIG. 7C, the portable information terminal scrolls the display image in a direction in which the pointer moves away from the point where the fourth touch operation is performed. Finally, as shown in FIG. 7D, when the user releases the touched finger from the touch panel, the portable information terminal erases the display of the pointer while scrolling the display image.

  Next, processing when the control unit 4 shown in FIG. 1 scrolls the display image will be described.

  FIG. 8 is a flowchart showing processing when the control unit 4 shown in FIG. 1 scrolls the display image.

  The control unit 4 stands by until the user performs a fourth touch operation on the designated area (step S21). The processing from the determination that the fourth touch operation has been performed to step S24 is the same as the processing in steps S2 to S4 in the flowchart shown in FIG.

  When the pointer in the display image is moved in step S24, the control unit 4 determines the distance in the left-right direction between the position of the point where the fourth touch operation is performed and the current position of the pointer (hereinafter referred to as the left-right distance). ) And the vertical distance (hereinafter referred to as the vertical distance) (step S25). When the left-right distance and the vertical distance are calculated, the control unit 4 scrolls the display image in accordance with the length of the left-right distance in a direction in which the portable information terminal is tilted in the left-right direction. The display image is scrolled according to the length of the vertical distance in the direction inclined in the vertical direction (step S26). The longer the left / right distance and the upper / lower distance, the larger the amount of scrolling the display image. The shorter the left / right distance and the upper / lower distance, the smaller the amount of scrolling the display image.

  When the display image is scrolled, the control unit 4 determines whether or not a release operation has been performed by the user (step S27). When the touch information by the release operation has not been received from the input unit 2, the control unit 4 determines that the release operation has not been performed by the user, proceeds to step S23, and repeats the display image scrolling process. On the other hand, when the touch information by the release operation is received from the input unit 2, the control unit 4 determines that the release operation has been performed by the user, erases the pointer display (step S28), and ends the display image scrolling process. To do.

  When the display image scrolling process ends, the control unit 4 proceeds to step S21 and waits until the user performs a fourth touch operation again.

  As described above, the portable information terminal according to the present embodiment scrolls the display image according to the distance between the point at which the fourth touch operation is performed and the pointer. Thereby, the user can scroll the display image in a desired direction sensuously.

DESCRIPTION OF SYMBOLS 1 Display part 2 Input part 3 Inclination detection part 4 Control part 5 Memory | storage device

Claims (12)

Display means having a display screen for displaying an image;
Touch panel type input means for sensing contact with the display screen;
Inclination detecting means for detecting the inclination of the device itself and generating inclination information indicating the direction of the inclination and the magnitude of the inclination;
Control means for changing an image displayed on the display means based on inclination information about an inclination detected in a state where contact by a predetermined touch operation on the display screen is maintained;
A portable information terminal. When the predetermined touch operation is performed, the control means displays a pointer at a point designated by the predetermined touch operation, moves the pointer in a direction in which the own device is tilted, and adjusts the tilt of the own device. Enlarge, reduce or scroll the image accordingly,
The portable information terminal according to claim 1. The control means changes the speed of moving the pointer according to the inclination of the device and changes the speed of enlarging, reducing or scrolling the image.
The portable information terminal according to claim 2. The predetermined touch operation is a first touch operation on a predetermined area of the display screen,
When the first touch operation is performed, the control means displays a pointer at a point where the first touch operation is performed, moves the pointer in a direction in which the device is inclined, and performs the first touch operation. Magnifying the image as the operated point and the pointer move away;
The portable information terminal according to claim 2 or 3. The predetermined touch operation is an operation in which a third touch operation is performed on a point different from the point on which the second touch operation is performed following the second touch operation on a predetermined area of the display screen. ,
When the second touch operation is performed, the control means displays a pointer at a point where the second touch operation is performed, moves the pointer in a direction in which the device is inclined, and performs the third touch. The image is reduced as the operated point approaches the pointer.
The portable information terminal according to claim 2 or 3. The predetermined touch operation is a fourth touch operation on a predetermined area of the display screen,
When the fourth touch operation is performed, the control means displays a pointer at a point where the fourth touch operation is performed, moves the pointer in a direction in which the device is tilted, and performs the fourth touch operation. Scrolling the image according to the distance between the operated point and the pointer;
The portable information terminal according to claim 2 or 3. A display control method in a portable information terminal having a touch panel display screen,
The input means senses a touch on the display screen;
The tilt detection means detects the tilt of the device itself, generates tilt information indicating the direction of the tilt and the magnitude of the tilt,
The control means changes the image displayed on the display screen based on the tilt information about the tilt detected in a state where the contact by the predetermined touch operation on the display screen is maintained.
Display control method. When the predetermined touch operation is performed, the control means displays a pointer at a point designated by the predetermined touch operation, moves the pointer in a direction in which the own device is inclined, and adjusts the inclination of the own device. Enlarge, reduce or scroll the image accordingly,
The display control method according to claim 7. The control means changes the speed of moving the pointer according to the inclination of the device and changes the speed of enlarging, reducing or scrolling the image.
The display control method according to claim 8. The predetermined touch operation is a first touch operation on a predetermined area of the display screen,
When the first touch operation is performed, the control means displays a pointer at a point where the first touch operation is performed, moves the pointer in a direction in which the device is inclined, and performs the first touch operation. Magnifying the image as the operated point and the pointer move away;
The display control method according to claim 8 or 9. The predetermined touch operation is an operation in which a third touch operation is performed on a point different from the point on which the second touch operation is performed following the second touch operation on a predetermined area of the display screen. ,
When the second touch operation is performed, the control means displays a pointer at a point where the second touch operation is performed, moves the pointer in a direction in which the device is inclined, and performs the third touch. The image is reduced as the operated point approaches the pointer.
The display control method according to claim 8 or 9. The predetermined touch operation is a fourth touch operation on a predetermined area of the display screen,
When the fourth touch operation is performed, the control means displays a pointer at a point where the fourth touch operation is performed, moves the pointer in a direction in which the device tilts, and performs the fourth touch. Scrolling the image according to the distance between the operated point and the pointer;
The display control method according to claim 8 or 9.

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