JP5098961B2 - Image display apparatus, method, and program - Google Patents

Description

  The present invention relates to an image display apparatus, method, and program, and more particularly, to an apparatus, method, and program for performing image display according to a touch panel operation by a user.

  In recent years, image display devices equipped with a touch panel are becoming widespread. In such an image display device, when displaying an image on a display, various controls are performed in conjunction with a drag operation on the touch panel (an operation in which the user moves a finger, a stylus, or the like while pressing the touch panel).

  For example, in Patent Documents 1 to 3, an image display device that cuts out and displays a part of an image that cannot be entirely displayed on a display and moves (scrolls) the cutout range of the image following a drag operation. Is described. Further, Patent Document 4 describes an image display device that continues this scrolling operation even after the end of the drag operation, thereby reducing the operation load on the user.

On the other hand, Patent Document 5 describes an image display device that switches an image to be displayed when a drag length (a movement distance of a pressed position on a touch panel by a drag operation) exceeds a predetermined threshold distance.
JP-A-6-149531 JP-A-2005-44036 JP 2005-234199 A Japanese Patent Laid-Open No. 10-161628 JP 2000-221879 A

  However, in the image display device described in Patent Document 5 described above, display switching is not accompanied by a drag operation when the image display size (the size of the area occupied by the image on the display surface of the display) is not constant. There was a problem. More specifically, when a user wants to switch an image, the user generally tends to perform a drag operation by touching the displayed image. For this reason, the user performs a drag operation with a large drag length from the vicinity of the display end point on an image with a large display size, while the user performs a drag operation with a small drag length from near the center of the display on an image with a small display size. Do. Therefore, when the display size of the image is small, the drag length does not exceed the threshold distance, and there is a possibility that the image is not switched.

  In particular, in recent image display devices, since images having various display sizes are handled, the above-described problem is remarkably generated.

  Therefore, an object of the present invention is to provide an image display apparatus, method, and program capable of improving display switching operability when the display size of an image is not constant.

  In order to achieve the above object, an image display device according to an aspect of the present invention includes a display, a touch panel disposed on a display surface of the display, a display unit that displays one image on the display, and the touch panel. A control unit that instructs the display unit to display another image on the display when the moving distance of the pressed position by the upper user exceeds a distance threshold set in accordance with the display size of the one image And comprising.

  The image display method according to one aspect of the present invention displays one image on a display, and a movement distance of a pressing position by a user on a touch panel arranged on a display surface of the display is that of the one image. When the distance threshold set in accordance with the display size is exceeded, another image is displayed on the display.

  Furthermore, an image display program according to an aspect of the present invention includes a process for displaying one image on the display on a terminal device including a display and a touch panel disposed on the display surface, and a user on the touch panel. When the movement distance of the pressed position exceeds a distance threshold set according to the display size of the one image, a process of displaying another image on the display is executed.

  In the present invention, the threshold distance for display switching by the drag operation is dynamically changed according to the display size of the image. For this reason, even when the display size of the image is not constant, it is possible to provide an excellent display switching operability to the user.

  Embodiments 1 and 2 of an image display apparatus according to the present invention will be described below with reference to FIGS. In the drawings, the same components are denoted by the same reference numerals, and redundant description is omitted as necessary for the sake of clarity.

[Embodiment 1]
The image display device 1 according to the present embodiment shown in FIG. 1 includes a display 10, a touch panel 20 disposed on the display surface of the display 10, a display unit 30, a control unit 40, and a memory MEM. Yes.

  The display unit 30 displays the image data DT stored in the memory MEM on the display 10 in accordance with the display control instruction INS from the control unit 40. In addition, the control unit 40 detects information on the touch position on the touch panel 20 (hereinafter referred to as “press position information”) INF1 detected by the touch panel 20 and image data stored in the memory MEM. The display unit 30 is controlled based on information about DT (hereinafter referred to as image information) INF2.

  Here, the pressed position information INF1 may include the drag direction and drag length of the drag operation by the user, or may include only coordinate information of the pressed position of the touch panel 20 by the user. In the latter case, the control unit 40 autonomously calculates the drag direction and the drag length from the coordinate information. For example, the size information (the number of pixels in each of the vertical direction and the horizontal direction) in the header added to the image data DT can be used as the image information INF2. Furthermore, either a built-in memory or a detachable memory may be used as the memory MEM.

  In operation, as shown in FIG. 2, the control unit 40 detects a drag operation OP by the user based on the pressed position information INF1 (step S1), and is currently displaying on the display 10 based on the image information INF2. The image display size DS is calculated (step S2), and the threshold distance TH of the drag length is set according to the display size DS (step S3). Here, the threshold distance TH is used when determining whether or not to switch an image to be displayed on the display 10 to another image, as will be described later.

  More specifically, when the image P1 is displayed on the entire display surface 10s as shown in FIG. 3A and the leftward drag operation OP is detected by the user, for example, Based on the image information INF2, the control unit 40 calculates the display width DSw = “W (width of the display display surface 10s)” on the display display surface 10s as the display size DS of the image P1. Then, the control unit 40 sets the threshold distance TH to, for example, 50% (“0.5 W”) of the display width DSw.

  Thereafter, the control unit 40 monitors the drag operation OP and determines whether or not the drag length exceeds the threshold distance TH (step S4). As a result, if the drag length does not exceed the threshold distance TH, the control unit 40 gives the display unit 30 a display control instruction INS that instructs execution of the scroll process of the image P1 (step S5).

  At this time, the control unit 40 instructs the display unit 30 to display the next image P2 to be displayed on the display 10 in addition to the drag direction and drag length of the drag operation OP necessary for the scroll process. Here, the control unit 40 determines the image P2 according to the drag direction. For example, when the left drag operation is performed by the user, the control unit 40 selects the image having the creation date and time next to the image P1 among the plurality of images stored in the memory MEM, When the user performs a drag operation in the right direction, the image having the oldest creation date and time after the image P1 is selected.

  As shown in FIG. 3B, the display unit 30 moves the display position of the image P1 following the drag operation OP, and displays a part of the image P2 on the display display surface 10s. In this case, the user can determine whether or not the image P2 is an image to be browsed prior to display switching by the image display device 1 (that is, if the image P2 is not a desired image, the user can perform an unnecessary drag operation). Can be avoided).

  On the other hand, when it is determined in step S4 that the drag length has exceeded the threshold distance TH, the control unit 40 instructs the display unit 30 to execute display switching processing from the image P1 to the image P2. A display control instruction INS is given (step S6). As shown in FIG. 3C, the display unit 30 displays the image P2 on the display display surface 10s instead of the image P1.

  Further, as shown in FIG. 4A, an image P3 (for example, DSw = “0.6W”) having a display width DSw narrower than the image P1 shown in FIG. 3A is displayed on the display surface 10s. Taking the case as an example, the control unit 40 sets the threshold distance TH to 50% of the display width DSw ("0.3 W (30% of the display display width W"). In this case, as shown in FIG. As shown in FIG.4, the display switching from the image P3 to the image P2 is performed with a smaller drag length than that in Fig. 3C, and the drag length is set to the threshold distance as shown in Fig. 4B. Until TH is exceeded, the same scrolling process as in FIG. 3B is performed.

  As described above, the image display device 1 can appropriately perform the display switching of the image in accordance with the above-described user's drag operation tendency, and thus the display switching operability when the display size of the image is not constant can be obtained. Compared with a conventional image display device, the improvement can be made significantly.

[Embodiment 2]
The image display apparatus according to the present embodiment can have the same configuration as the image display apparatus 1 shown in FIG. However, the operation of the control unit 40 is different from that of the first embodiment. More specifically, as illustrated in FIG. 5, the control unit 40 performs the processes illustrated in steps S <b> 7 and S <b> 8 in addition to the processes of steps S <b> 1 to S <b> 6 illustrated in FIG. 2.

  That is, the control unit 40 sets the threshold distance TH according to the display size DS in the same manner as in the first embodiment, and then, unlike the first embodiment, the display size DS is equal to or larger than a certain size. It is further determined whether or not (step S7). As a result, when it is determined that the display size DS is equal to or larger than a certain size, the control unit 40 operates in the same manner as in the first embodiment.

  On the other hand, if it is determined that the display size DS is less than the certain size, the control unit 40 resets the threshold distance TH to the fixed value FV (step S8). Here, the reason why the threshold distance TH is set to the fixed value FV is that if the threshold distance TH is unconditionally set to a small value, a slight touch on the touch panel 20 is detected as a drag operation. On the contrary, there is a possibility that the display switching of the image may be performed. In order to avoid this, when the display size DS is less than a certain size, the control unit 40 sets the threshold distance TH to a minimum threshold that does not cause a malfunction.

  More specifically, as shown in FIG. 6A, an image P4 (for example, DSw = “0.3W”) having a display width DSw much narrower than the display display width W is displayed on the display display surface 10s. Taking the case as an example, the control unit 40 resets the threshold distance TH to a fixed value FV (eg, “0.2 W (20% of the display display width W)”) regardless of the display width DWs.

  As a result, as shown in FIG. 6C, the display switching from the image P4 to the image P2 is performed only after the drag operation OP whose drag length exceeds the fixed value FV is performed, which is contrary to the user's will. Display switching can be prevented. As shown in FIG. 6B, the same scrolling process as in FIGS. 2B and 3B is performed until the drag length exceeds the fixed value FV.

  Note that the present invention is not limited to the above-described embodiments, and it is apparent that various modifications can be made by those skilled in the art based on the description of the scope of the claims. For example, each process of the display unit 30 and the control unit 40 shown in the above embodiment is performed on a terminal device such as a mobile phone, a smartphone, a PDA (Personal Digital Assistants), a personal computer, and a navigation device provided with a touch panel. It can also be provided as a program for

It is the block diagram which showed the example of a structure common to Embodiment 1 and 2 of the image display apparatus which concerns on this invention. It is the flowchart figure which showed the example of whole operation | movement of Embodiment 1 of the image display apparatus which concerns on this invention. It is the figure which showed an example of the scroll process and display switching process of the image in Embodiment 1 of the image display apparatus which concerns on this invention. It is the figure which showed the other example of the scroll process and display switching process of the image in Embodiment 1 of the image display apparatus which concerns on this invention. It is the flowchart figure which showed the example of whole operation | movement of Embodiment 2 of the image display apparatus which concerns on this invention. It is the figure which showed an example of the scroll process and display switching process of the image in Embodiment 2 of the image display apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image display apparatus 10 Display 10s Display display surface 20 Touch panel 30 Display part 40 Control part MEM Memory DT Image data INF1 Press position information INF2 Image information INS Display control instruction OP Drag operation P1-P4 Image DS Display size DSw Display width W Display display Width TH Threshold distance FV Fixed value

Claims (11)

Display,
A touch panel disposed on a display surface of the display;
A display unit for displaying one image on the display;
When the moving distance of the pressed position by the user on the touch panel exceeds a distance threshold set according to the display size of the one image, the display unit is instructed to display another image on the display. A control unit;
An image display device comprising: In claim 1,
The image display device, wherein the control unit sets the distance threshold to a fixed value when the display size is less than a certain size. In claim 1 or 2,
The image display apparatus, wherein the control unit determines an image to be instructed according to a moving direction of the pressed position. In any one of Claims 1-3,
When the movement distance is equal to or less than the threshold distance, the control unit instructs the display unit to move the display position of the one image following the movement of the pressed position. Image display device. In claim 4,
The image display device, wherein the control unit instructs the display unit to display a part of the other image on the display when the display position is moved. Display one image on the display,
When the moving distance of the pressed position by the user on the touch panel arranged on the display surface of the display exceeds a distance threshold set according to the display size of the one image, another image is displayed on the display. ,
Image display method. In claim 6,
When the display size is less than a certain size, the distance threshold is set to a fixed value. In claim 6 or 7,
An image display method, wherein an image to be displayed is determined according to a moving direction of the pressed position. In any one of Claims 6-8,
When the moving distance is equal to or less than the threshold distance, the display position of the one image is moved following the movement of the pressed position. In claim 9,
A method of displaying an image, wherein a part of the other image is displayed on the display when the display position is moved. To a terminal device equipped with a display and a touch panel arranged on the display surface,
Processing to display one image on the display;
When the moving distance of the pressed position by the user on the touch panel exceeds a distance threshold set according to the display size of the one image, a process of displaying another image on the display;
An image display program for executing

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