JP6628856B2 - Display device, display method, and program - Google Patents

Description

  The present invention relates to a display device and the like.

  In recent years, as the size of a liquid crystal display device has increased, for example, a device called a table display in which a liquid crystal display device is incorporated in a table has appeared. The table display can perform various operation displays by being integrated with the touch panel.

  For example, a system has been proposed in which when displaying a material such as a PowerPoint on a table, the material is imaged, and operations such as movement, rotation, and page turning are realized by a touch operation similar to a conventional paper operation.

Specifically, there is known an invention in which image data having attribute information is grouped to generate an image group, and a thumbnail image is displayed in a list on a display device in a stacked manner (for example, see Patent Document 1).
Also, there is known an invention in which a plurality of document data are classified into groups, display image data of the document data classified into the same group is generated, and the pages are turned so as to be displayed (for example, see Patent Document 2).

JP 2012-19364 A JP 2008-210182 A

  When there are multiple materials on the table display, there are requests to perform various operations such as "I want to list and display the contents of the materials", "I want to turn the materials one page at a time", "I want to move the materials". is there.

  However, as a conventional operation method, for example, when a plurality of display images are displayed in a superimposed state on a display device with a touch panel, when the operator performs a flick operation on the display image, the display image is moved. Or a page turning operation cannot be determined, and the process cannot be specified.

  In addition, when performing processing such as moving and displaying a list of all stacked display images, it is necessary to call and operate the operation menu once and switch the processing mode, which requires a complicated operation for the operator. there were.

  In view of the above-described problem, an object of the present invention is to provide a display device or the like that can easily realize various different operations by a touch operation or the like of an operator when a material is displayed on the display device. To provide.

In view of the above-described problems, the display device of the present invention includes:
A display unit that displays one or more page images based on a file containing a plurality of pages, and an identification display indicating that the file contains a plurality of pages,
When a touch operation on the identification display is received, an operation mode in which the one page image is displayed on the display unit and the operation is received, and a list displaying the plurality of page images in a list on the display unit A control unit for switching between display modes,
It is characterized by having.

The display method of the present invention,
A display step of displaying one or more page images based on a file containing a plurality of pages and an identification display indicating that the file contains a plurality of pages,
When receiving a touch operation on the identification display, a control step of switching between an operation mode capable of displaying the one page image and accepting an operation, and a list display mode for displaying a list of the plurality of page images. ,
It is characterized by including.

The program of the present invention
On the computer,
A display function of displaying one or more page images based on a file containing a plurality of pages, and an identification display indicating that the file contains a plurality of pages,
When a touch operation on the identification display is received, an operation mode capable of displaying the one page image and receiving an operation, and a control function of switching between a list display mode for displaying a list of the plurality of page images and ,
Is realized.

  According to the present invention, from the pages included in the page group file, the thumbnail of one page and the identification display indicating the page group file are displayed in a superimposed manner. When an operation of canceling the superimposed display with the thumbnail is detected for the identification display, a list of the thumbnails of the files displayed in the page group file is displayed. Thus, the operator can easily identify that the displayed thumbnail includes a plurality of pages by the identification display. Further, by switching between the display of the page group file and the list display, it is possible to switch the page confirmation and operation as needed.

  From the pages included in the page group file, a thumbnail of one page and an identification display indicating that the page is a page group file are displayed in a superimposed manner. If a flick operation is detected on a thumbnail displayed by the page group file display unit after an operation for selecting an identification display is detected, the thumbnail may be switched to a thumbnail of a different page and displayed. it can. As a result, the thumbnails displayed in the page group file can be switched and displayed, and the contents of the page that is not currently displayed can be easily confirmed by intuitive operation.

It is a figure for explaining the whole in a 1st embodiment. FIG. 2 is a diagram for describing a functional configuration of a table display according to the first embodiment. FIG. 4 is a diagram for describing a clip file according to the first embodiment. 5 is an operation flow for describing a basic process in the first embodiment. FIG. 5 is a diagram for describing an operation example in a material operation mode according to the first embodiment. 6 is an operation flow for explaining a processing flow in the first embodiment. FIG. 5 is a diagram for describing an operation example in the first embodiment. FIG. 5 is a diagram for describing an operation example in the first embodiment. FIG. 5 is a diagram for describing an operation example in the first embodiment. FIG. 5 is a diagram for describing an operation example in the first embodiment. It is an operation flow for explaining the flow of processing in the second embodiment. It is a figure for explaining the example of operation in a 2nd embodiment. It is an operation flow for explaining a flow of processing in a third embodiment. It is a figure for explaining the example of operation in a 3rd embodiment. It is an operation flow for explaining a processing flow in the fourth embodiment. It is a figure for explaining the example of operation in a 4th embodiment.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. Note that, for convenience of explanation, the embodiment will be described as an example, but it is needless to say that any device that can perform a display operation can be applied.

[1. First Embodiment]
[1.1 Overall configuration]
FIG. 1 is a diagram showing the appearance of a large display device (table display 10) operable by a touch panel to which the display operation device of the present invention is applied.

  The table display 10 has a table shape, and the table portion is configured by a display device (for example, a large liquid crystal display device). Further, the display device is configured integrally with the touch panel, and can be operated by an operator.

  Here, the table display 10 can be operated by a plurality of operators based on the size and shape of the display unit. For example, since the operator can operate from four directions, it can be used for various meetings, business negotiations, and the like.

[1.1 Functional Configuration]
Next, the functional configuration of the table display 10 will be described with reference to FIG. 2, the table display 10 includes a control unit 110, a display unit 120, an input detection unit 130, an image processing unit 140, a communication unit 150, and a storage unit 160. .

  The control unit 110 is a functional unit for controlling the entire table display 10. The control unit 110 realizes various functions by reading and executing various programs stored in the storage unit 160, and is configured by, for example, a CPU (Central Process Unit) or the like.

  The display unit 120 is a functional unit for displaying various information. For example, it is configured by a liquid crystal display (LCD), an organic EL display, or the like.

  The input detection unit 130 is a functional unit that can detect an input from the operator. In the present embodiment, the touch panel is formed integrally with the display unit 120. The input detection unit 130 can detect various operations such as tap, hold, slide, flick, and hold from the operator. Further, it is possible to detect a plurality of inputs from the operator. For example, 5 points may be simultaneous or 10 points may be simultaneous.

  If the detection range is within the predetermined range and a plurality of detection points are detected, it is possible to detect that the predetermined range is selected.

  The image processing unit 140 is a functional unit for developing and displaying an image read from a file or the like. In addition, a thumbnail image is generated from an existing file or page.

  The communication unit 150 is a network interface unit for connecting to an external network of the Internet or another device. For example, it is configured by an NIC or the like.

  The storage unit 160 is a functional unit that stores various programs necessary for the operation of the table display 10 and various data. The storage unit 160 includes, for example, a semiconductor memory, a hard disk drive (HDD), and the like.

  The storage unit 160 stores a file 162 storing various data, a clip file 164 generated from the file, and a thumbnail image 166 generated by the image processing unit 140.

  Here, the clip file is a page group file in which one or a plurality of pages included in the file are collected. FIG. 3 is a diagram illustrating a clip file to be displayed (operated) according to the present embodiment. The left side shows each file 162.

  For example, a presentation format data file, an image file, and a spreadsheet format data file are stored. The right clip file collects data such as slides, images, and sheets included in each file for each page.

  As described above, the clip file is a page group file in which pages of various data are put together. The pages to be collected are in various formats such as a text file, a spreadsheet file, a presentation file, an image file, and an electronic text file (PDF or XML).

  In FIG. 3, pages such as “Slide 1”, “Image.jpg”, “Sheet 2”... As the clip file, data may be directly extracted from the file and put together, or link information for each file may be managed.

  This clip page is data to be operated by the operator. For example, by the switching operation from the operator, an operation of switching and displaying page 1, page 2,... Or inserting / deleting some pages can be performed.

  In FIG. 3, pages are grouped from a plurality of files. For example, a part or all of a single file may be used as a clip file.

  As described above, the operator can perform the operation regardless of the type of page (type of application to be used, electronic text format, image format) stored for each clip page.

[1.3 Basic operation]
Next, the basic operation will be described. First, a process of designating and reading a clip file will be described.

  As shown in FIG. 4, first, a clip file is read (step S100). If the clip file does not include a plurality of pages (step S102; No), a thumbnail image of the page is generated (step S110), and the thumbnail image is displayed (step S112).

  On the other hand, if the read file has a plurality of pages (step S102; Yes), the first thumbnail image is generated (step S104). Then, a clip page image is displayed (step S106), and a clip display for identifying and displaying a clip page is performed (step S108). Here, the thumbnail of the page and the identification display are superimposed and displayed.

  Note that the same process is performed even when a plurality of read files are included and a plurality of pages are included.

  Then, after displaying the clip page image or the thumbnail image, the mode is shifted to the material operation mode (S114).

  The “material operation mode” is a basic operation mode, for example, a page can be added / inserted or deleted from a file to a material (clip file in this embodiment). Further, by selecting and dragging a page file, the clip file can be moved, the display can be enlarged or reduced by pinch-in / pinch-out, or the clip file can be rotated.

  FIG. 5 is a screen display example (display screen W100) in the material operation mode. The clip file M102 is displayed, and a clip display T102 is displayed at the upper left of the display of the clip file M102. This allows the operator to visually recognize that the displayed file is a clip file.

  Furthermore, the clip file M102 was originally displayed at the position of M104. The clip file is displayed at the current position by being touched and dragged in the P1 direction by the operator.

  As described above, in the material operation mode, the display position and the like of the clip file can be moved by the operation of the operator.

[1.4 Processing Flow]
Subsequently, a flow of processing in the present embodiment will be described with reference to FIG. In the first embodiment, an embodiment in which page thumbnails are displayed as a list from clip files will be described.

  First, a flick at the clip position is detected (step S152; Yes). In the present embodiment, a flick upward (outward of the clip file) is detected from the position of the clip.

  Subsequently, a page is read from the clip file (step S154), and the image processing unit 140 creates a page thumbnail (step S156). The page thumbnail is a thumbnail image for each page included in the clip file. As for the timing of generating the thumbnail images of the pages included in the clip file, all the thumbnail images may be generated, or the thumbnail images may be generated for each predetermined range (for example, the range displayed on the screen). It is good to do.

  Subsequently, the clip is displayed outside the page (step S158). For example, in order not to overlap with the clip file (or the thumbnail of the page included in the clip file), the thumbnail is displayed outside the area where the thumbnail of the page is displayed.

  Then, a list of page thumbnails is displayed (step S160), and the mode transits to a material list display mode (step S162).

  Here, the material list display mode is a mode for listing thumbnails (images) of pages included in the clip file. Thus, the operator can check what is included in the entire clip file.

  At this time, image processing can be performed for each page. More specifically, tapping and pinching in (pinching out) to enlarge (reduce) a thumbnail, dragging to change the page order, and swiping and holding to delete a page Various operations are possible.

  In the material list display mode, when a tap of a clip is detected (step S164; Yes), the display is shifted from the page thumbnail list display to the clip file display (step S166). And it changes to material operation mode (Step S168).

[1.5 Operation example]
Subsequently, an operation example in the present embodiment will be described with reference to the drawings. FIG. 7 shows a state where the clip display T152 has been selected by the operator.

  In this operation example, for example, when image data (for example, PowerPoint) of six pages of presentation data is captured, it is recognized as one related image based on information of a page number added to the presentation data. After the six pages of presentation data are converted into display images and then displayed on a display device, clip processing is performed as one group.

  In addition, even in a different file format such as presentation data, spreadsheet data, or text data, necessary display image pages are extracted and stacked from different files while being displayed on the operation display device (table display 10). By executing clip processing (for example, double-clicking on a clip position with two fingers), it is possible to extract (or copy) necessary pages from different files, group them, and create one display image. .

  As described above, a clip image indicating that the clip file has been subjected to the clip processing as one group is a clip file at the top of the display image.

  The clip file is moved / moved by the user by performing a drag-and-drop operation, and the pinch-in or pinch-out operation is performed by two fingers, so that the displayed image is enlarged / enlarged. Reduction is performed.

  First, the clip display T152 is displayed so as to be superimposed on the clip file M152. At this time, the clip file (clip file M152) can be moved, rotated, and copied by operating the clip file.

  Then, when the operator swipes the display image of the clip file (clip display T152) in the direction P2 as shown in FIG. 8, the clip display T154 also moves. Then, when the operator finishes swiping outside the clip file M152 (the touch state is released), a page thumbnail is displayed in the region R152 as shown in FIG.

  At this time, the clip display T156 is displayed outside the region R152. As described above, the clip images moved by the user are displayed in the vicinity of the list of displayed images, so that the displayed grouped display images are recognizable. When the clip display T156 is touched by the operator, the display returns to the clip file display again as shown in FIG.

  In addition, the display images displayed in a list can be moved, copied, and rotated in the same manner as the display images that have not been subjected to the clip processing so far. The user can perform a flick operation on the clip images and display the list. When the display image is overlaid on any of the displayed images or when the clip image is double-clicked, the display image of the grouped list display is shifted to the display of FIG.

  As a method of displaying a page thumbnail, for example, as shown in FIG. 10A, the page thumbnail is displayed in a scaled manner so as to be included in a predetermined area. Further, a slide bar may be provided as shown in FIG. 10B, or a page may be switched as shown in FIG. 10C. Further, these displays may be arbitrarily switched by the user on a setting screen or the like.

[2. Second Embodiment]
Next, a second embodiment will be described. The second embodiment is an embodiment regarding a page turning mode in which a page can be switched and displayed.

[2.1 Processing example]
The processing flow of the second embodiment will be described with reference to FIG. First, when a tap at the clip position is detected (Step S202; Yes), a page is read from the clip file (Step S204).

  Subsequently, an identification display indicating that the page of the clip file can be displayed is performed. Specifically, the clip is first changed to the paper weight display (step S206), and an identification display indicating that the page can be turned is performed (step S208).

  Subsequently, a page turning operation is detected (step S210). For example, by swiping the displayed page from right to left (left direction), it is detected that the operation is to turn the page. In this case, a thumbnail image of the next page is generated (step S212), and a thumbnail image of the next page is displayed (step S214).

  The operations from step S210 to step S214 are repeatedly executed until the paper weight is tapped as the page turning operation mode (step S246; No). Note that the page turning operation may be, for example, an operation of tapping an identification display indicating that a page can be turned. In addition, swiping the displayed page from left to right (rightward) may be detected as an operation to turn the page in the reverse direction. In this case, a thumbnail image of the previous page is generated (if it remains as a cache image, it is used) and displayed.

  Then, when the tap of the paper weight display is detected (Step S216; Yes), the display is changed from the paper weight display to the clip display (Step S218). Then, the page turning possible identification display is stopped (step S220), and the material operation mode is executed again (step S222).

[2.2 Operation example]
Subsequently, an operation example in the present embodiment will be described with reference to FIG. FIG. 12A shows a clip display T202 in a clip file M202. When the clip display T202 is tapped, the display changes from the clip display to the paper weight display C204 as shown in FIG. The state of the lower right of the clip file M202 is changed to that of the page turning possible identification display C206. By such a change in the display, the operator can recognize that the page can be turned.

  In this state, when the operator performs a flick operation in the P3 direction (left direction) as shown in FIG. 12C, the pages can be switched. At this time, tapping the paper weight display C204 causes a transition to the material operation mode.

[3. Third Embodiment]
Next, a third embodiment will be described with reference to FIG.

[3.1 Process Flow]
First, the hold of the displayed clip position is detected (Step S302; Yes). If a flick is detected on the clip file while the hold of the clip position is detected (step S304; Yes), a thumbnail image of the next page is generated (step S306). Then, the generated thumbnail image of the next page is displayed (step S308).

  Here, if the hold of the clip position is maintained (Step S304; No → Step S310; No, Step S308 → Step S310; No), the above-described processing is executed again (Step S310; No → Step S304).

  On the other hand, if the hold of the clip position has been released (step S310; Yes), the state returns to the clip file display state (step S312), and transitions to the material operation mode (step S314).

[3.2 Operation example]
Subsequently, an operation example in the present embodiment will be described with reference to FIG. FIG. 14A shows a clip display T302 in a clip file M302. When the clip display T302 is held, the clip display T304 is displayed on the clip file M302 as shown in FIG. In addition, the lower right of the clip file M302 changes to a page turning possible identification display C302. This allows the operator to recognize that the page can be turned.

  In this state, when the operator performs a flick operation in the P4 direction (left direction) as shown in FIG. 14C, the pages can be switched. At this time, when the hold state of the clip display T302 is released, the state transits to the material operation mode.

  In the present embodiment, for example, in FIG. 14B, the display mode is changed in order for the operator to leave the mode changed, but the display change is not necessarily required. That is, it is only necessary to turn the page while the clip display T304 is held (selected).

[4. Fourth embodiment]
Subsequently, a fourth embodiment will be described.

[4.1 Process Flow]
The processing flow of the fourth embodiment will be described with reference to FIG. First, it is detected whether a predetermined range on the clip file has been held (step S402). Here, whether or not the predetermined range is held is calculated, for example, by extracting a range including a multi-touch detection point, thereby calculating the held area. Then, it is determined whether or not the calculated area is equal to or larger than a predetermined size.

  When a flick is detected on the clip file in a state where the clip is held in the predetermined range (step S404; Yes), a thumbnail image of the next page is generated and displayed (step S406 → S408).

  If the hold of the predetermined range on the clip file is released (step S410; Yes), the process returns to the clip file display state (step S412), and the operation transits to the material operation mode (step S412).

[4.2 Operation example]
Subsequently, an operation example in the present embodiment will be described with reference to FIG. FIG. 16A shows that a predetermined range R402 is selected (held) by the operator on the clip file M402.

  When the operator performs a flick operation in the P5 direction (left direction) as shown in FIG. 16B in a state where the predetermined range R402 is selected (held) by the operator, the page is switched. It becomes possible. At this time, when the hold state of the predetermined range R402 is released, the mode transits to the material operation mode.

[5. effect]
According to the above-described embodiment, the input image data and document data (page) are expanded and displayed on the display image data (thumbnail). When a plurality of pages are included, clip processing is performed in the same manner as a paper material, and the images are linked as one display image, so that operations such as moving and copying the display image can be facilitated. Performance can be improved.

[6. Modification]
The embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiments, and a design or the like without departing from the gist of the present invention is set forth in the appended claims. include.

  In the embodiment, a program that operates in each device is a program that controls a CPU or the like (a program that causes a computer to function) so as to realize the functions of the above-described embodiments. The information handled by these devices is temporarily stored in a temporary storage device (for example, a RAM) at the time of the processing, and thereafter stored in a storage device such as various ROMs or HDDs. -Writing is performed.

  Here, as a recording medium for storing the program, a semiconductor medium (for example, a ROM or a non-volatile memory card), an optical recording medium / a magneto-optical recording medium (for example, a DVD (Digital Versatile Disc), an MO (Magneto Optical) Disc), MD (Mini Disc), CD (Compact Disc), BD, etc.), and magnetic recording media (eg, magnetic tape, flexible disk, etc.). In addition, by executing the loaded program, not only the functions of the above-described embodiments are realized, but also by executing in cooperation with the operating system or other application programs based on the instructions of the program, the present invention is realized. The functions of the invention may be realized.

  When the program is distributed in the market, the program can be stored in a portable recording medium and distributed, or transferred to a server computer connected via a network such as the Internet. In this case, it goes without saying that the storage device of the server computer is also included in the present invention.

  In addition, some or all of the devices in the above-described embodiments may be typically implemented as an LSI (Large Scale Integration) which is an integrated circuit. Each functional block of each device may be individually formed into a chip, or a part or the whole may be integrated into a chip. The method of circuit integration is not limited to an LSI, and may be realized by a dedicated circuit or a general-purpose processor. Further, when an integrated circuit technology that replaces the LSI appears with the advance of the semiconductor technology, it is needless to say that an integrated circuit based on the technology can be used.

In addition, the operation display device according to the above-described embodiment includes:
A page group file generating means for generating a page group file including one or a plurality of pages from a file including a plurality of pages;
A page group file display unit that superimposes a thumbnail of one page from the pages included in the page group file and an identification display indicating the page group file,
An operation detection unit that detects an operation of canceling the superimposed display with the thumbnail with respect to the identification display;
A list display unit configured to display a list of thumbnails of the files displayed in the page group file when the operation detecting unit detects an operation of canceling the superimposed display with the thumbnail;
May be provided.

In addition, the operation display device according to the above-described embodiment includes:
A page group file generating means for generating a page group file including one or a plurality of pages from a file including a plurality of pages;
A page group file display unit that superimposes a thumbnail of one page from the pages included in the page group file and an identification display indicating the page group file,
Operation detecting means for detecting an operation of selecting the identification display,
If a flick operation is detected on a thumbnail displayed by the page group file display unit after the operation for selecting the identification display is detected, the thumbnail is switched to a thumbnail of a different page and displayed. Display means;
It is characterized by having.

Also, the program of the above-described embodiment is
On the computer,
A page group file generation function for generating a page group file including one or more pages from a file including a plurality of pages,
From a page included in the page group file, a page group file display function of superimposing and displaying a thumbnail of one page and an identification display indicating the page group file;
An operation detection function of detecting an operation for canceling the superimposed display with the thumbnail with respect to the identification display;
A list display function for displaying a list of thumbnails of files displayed in the page group file when an operation for canceling the superimposed display with the thumbnail is detected by the operation detection function;
May be realized.

Also, the program of the above-described embodiment is
On the computer,
A page group file generation function for generating a page group file including one or more pages from a file including a plurality of pages,
From a page included in the page group file, a page group file display function of superimposing and displaying a thumbnail of one page and an identification display indicating the page group file;
An operation detection function of detecting an operation of selecting the identification display;
If a flick operation is detected on a thumbnail displayed by the page group file display function after the operation of selecting the identification display is detected, the thumbnail is switched to a thumbnail of a different page and displayed. Display function,
May be realized.

In addition, the display device of the above-described embodiment includes:
Storage means for storing a page group file including one or more pages,
List display means for displaying a list of display images of pages included in the page group file, and displaying an identification display indicating that the list of display images is a page group file;
Operation detection means for detecting a touch operation on the identification display,
When a touch operation on the identification display is detected by the operation detection unit, a display image of one page is displayed in place of the display image displayed in the list, and the identification image is displayed on the display image. Display means for superimposing and displaying the display;
May be provided.

Also, in this case,
Further comprising an image processing means for performing image processing on the page,
The image processing means performs image processing for each page when a list of display images is displayed by the list display means, and is included in the file when a page group file is displayed by the display means. The image processing may be performed on the entire page, and when a list of file thumbnails is displayed by the list display unit, the image processing may be performed on each page.

Also, in this case,
The list display means may display the identification display near an outside of the list-displayed image for display.

Also, in this case,
The list display means,
The display image and the identification display are superimposed and displayed,
Regarding the identification display, an operation of canceling the superimposed display with the display image is detected,
When an operation of canceling the superimposed display with the display image is detected, a list of page thumbnails is displayed as a display image of a file displayed in the page group file,
It may be characterized.

Also, in this case,
The display means,
After the flick operation to the identification display is detected by the operation detection means, when it is detected that the identification display is superimposed on any of the display images displayed in the list, or when the double display to the identification display is performed. When a click operation is detected, the display image displayed in the list may be displayed by superimposing the display image of one page and the identification display.

Further, the display method of the above-described embodiment is as follows.
A storing step of storing a page group file including one or a plurality of pages;
A list display step of displaying a list of display images of the pages included in the page group file, and displaying an identification display indicating that the list of display images is a page group file;
An operation detection step of detecting a touch operation on the identification display,
When a touch operation on the identification display is detected by the operation detection step, a display image of one page is displayed instead of the display image displayed in the list, and the identification image is displayed on the display image. A display step of superimposing the display,
May be included.

Also, the program of the above-described embodiment is
On the computer,
A storage function for storing a page group file including one or more pages,
A list display function for displaying a list of display images of the pages included in the page group file, and displaying an identification display indicating that the list of display images is a page group file;
An operation detection function of detecting a touch operation on the identification display,
When a touch operation on the identification display is detected by the operation detection function, a display image of one page is displayed instead of the display image displayed in the list, and the identification image is displayed on the display image. A display function for superimposing the display,
May be realized.

Reference Signs List 10 table display 110 control unit 120 display unit 130 input detection unit 140 image processing unit 150 communication unit 160 storage unit 162 file 164 clip file 166 thumbnail image

Claims (7)

One or more page images based on a file that includes a plurality of pages, and a display unit that displays an identification display indicating that a plurality of pages are included in the file in a manner superimposed on the one page image ,
Wherein when receiving a first operation to identification, and displays the one-page image on the display unit, a plurality pre-Symbol at least movement operation capable of receiving an operation mode for the one page image Switch to a list display mode for displaying a list of page images on the display unit ,
When receiving the first operation is different from the second operation to the identification, from the list display mode, the control section to switch to the operating mode,
A display device comprising: The operation mode may further include any one of operations of adding or deleting a page to the file, and moving, enlarging, reducing, or rotating the page image. The display device according to claim 1. The display device according to claim 1, wherein the first operation is a flick operation, and the second operation is a touch operation.   The control unit, when a touch operation on the identification display is received in a state where the plurality of page images are displayed in a list on the display unit, displays one of the page images displayed in the list. The display device according to claim 1, wherein: The control unit includes:
As a first operation, when the identification display is superimposed on the one page image and an operation to move the identification display out of the one page image is included in the file, The display device according to claim 1, wherein a plurality of page images are displayed in a list on the display unit. One or more page images based on a file containing a plurality of pages, and a display step of displaying an identification display indicating that a plurality of pages are included in the file so as to be superimposed on the one page image ,
Wherein when receiving a first operation to identification, the display of one page image before Symbol plurality of page images from at least move operation mode of operation can be accepted for that one page image comprising the steps of: Ru instead Ri switching to the list display mode that lists,
When receiving a second operation different from the first operation on the identification display, switching from the list display mode to the operation mode;
A display method comprising: On the computer,
One or more page images based on a file that includes a plurality of pages, and a display function of displaying an identification display indicating that a plurality of pages are included in the file so as to be superimposed on the one page image ,
When receiving the first operation to the identification, the display of one page image, the plurality of page images from the available operating modes to accept at least a movement operations on the one page image Switch to the list display mode to list,
A control function of switching from the list display mode to the operation mode when a second operation different from the first operation to the identification display is received;
A program characterized by realizing.

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