JP2013175222A - Content display device, content display method, program, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a content display device having a content selecting screen which is user-friendly.SOLUTION: A content display device includes: a document list displaying processor for displaying, on a screen 20, a portion of a book shelf object 10 in which a plurality of thumbnail images 12 are arranged on a shelf surface 11; and a rotation processor and a scroll processor for changing a display portion of the book shelf object 10 to be displayed on the screen 20. When a second input operation is carried out, on an input operation part, for instructing a display of another location in a vertical direction of the displayed shelf surface 11, the scroll processor displays a scroll movement in the vertical direction of the displayed shelf surface 11. When a first input operation is performed, on the input operation part, for instructing a display of a shelf surface 11 which is different from the displayed shelf surface 11, the rotation processor displays rotation of the book shelf object 10 using a central axis of the book shelf object 10 as a rotational axis.

Description

  The present invention relates to a content display device, a content display method, a program, and a recording medium, and more specifically, a content display device that displays a thumbnail image corresponding to the content, a content display method, a program therefor, and a recording medium on which the same is recorded. About.

  Conventionally, a terminal equipped with a browser function for displaying a plurality of thumbnail images side by side is known. Many of these display a plurality of thumbnail images side by side on a two-dimensional plane. However, the number of thumbnail images that can be displayed in one screen is limited due to the limitation due to the screen size.

  In view of this, a method has been proposed in which an image is pasted on the side surface of a three-dimensional solid and the solid is rotated (see Patent Document 1). In addition, a method of switching the three-dimensional shape of a three-dimensional object in accordance with a presentation method has been proposed in order to present a plurality of images in a manner that is easy for the user to see visually (see Patent Document 2).

JP 2002-288690 A (released on October 4, 2002) JP 2006-338599 A (released on December 14, 2006)

  However, according to the method in Patent Document 1, only one image is attached to the side surface. Therefore, it is necessary to rotate the solid until the target image is obtained, and it is inconvenient if the number of images becomes large. Further, in the method in Patent Document 2, although a plurality of images are pasted on the surface of the cube, the cube can be rotated in any direction of 360, so that it is difficult to use for a user who is not operated. is there.

  Therefore, the present invention has been made in view of the above problems, and an object thereof is to provide a content display device having a user interface that is easy for a user to operate.

  In order to solve the above problems, a content display device according to the present invention displays a screen and a part of a virtual three-dimensional object in which a plurality of images representing content are arranged on each side of a polygonal column on the screen. The display processing means is controlled when a first input operation for instructing display of the side surface different from the processing means, the input unit, and the displayed side surface is performed on the input unit. A rotation processing means for displaying the rotation of the virtual three-dimensional object with the central axis of the polygonal column as the rotation axis and displaying the side surface to be displayed as a result of the rotation, and display When the second input operation for instructing the display of another position in the direction parallel to the central axis of the side surface is performed on the input unit, the display processing unit is controlled, Displayed And scrolling processing means for executing processing for displaying the results displayed are possible to become part of the mobile together with displaying the scrolling to the direction of the sides have a Configurations which comprises a.

  According to the above configuration, the content display device displays the virtual three-dimensional object of polygonal prism and each image arranged on each side surface thereof on the screen. A first input operation or a second input operation is performed on the input unit. The first input operation is an input operation for displaying a side surface different from the displayed side surface when a certain side surface of the virtual three-dimensional object is displayed on the screen. The second input operation is an input operation for displaying another position within the same side surface in a direction parallel to the central axis of the polygonal column when a side surface of the virtual three-dimensional object is displayed on the screen. . In this specification, the central axis of the polygonal column is intended to be an axis that passes through the center of gravity of the bottom surface of the polygonal column and is orthogonal to the bottom surface of the polygonal column. Hereinafter, this direction is referred to as a vertical direction in the present specification.

  When the first input operation is performed, a process of displaying the rotation of the virtual three-dimensional object with the central axis of the polygonal column as the rotation axis is performed. As a result, a state in which the virtual three-dimensional object rotates is displayed on the screen. In addition, processing for displaying the side surface to be displayed as a result of the rotation is performed. As a result, a different side from the side that was originally displayed is displayed on the screen. Therefore, when an image is arranged on each side surface and an image on a certain side surface is displayed, an image on another side surface can be displayed by the first input operation.

  Further, when the second input operation is performed, a process for displaying the scroll movement in the vertical direction of the side surface displayed at that time is performed. As a result, a state in which the displayed side surface scrolls in the vertical direction is displayed on the screen. In addition, processing for displaying a portion to be displayed as a result of scrolling is performed. As a result, the screen displays a portion that is in the same side as the side that was originally displayed and that is different from the portion that was originally displayed. Therefore, when a large amount of images are arranged on a certain side surface and only a part of the image is displayed on the screen, an image that is in the same side surface but has not been displayed is displayed by the second input operation. It can be displayed.

  As described above, even if many images are arranged and managed in the virtual three-dimensional object, by rotating the virtual three-dimensional object in the virtual space in the screen or scrolling the side surface in the vertical direction, The target image can be displayed on the screen.

  In addition, the act of rotating an object of a polygonal column or changing a portion viewed from a certain side surface in a vertical direction is associated with an operation in a rotary bookcase placed in a bookstore or the like. Therefore, even a person who contacts the content display device for the first time or a person who is unfamiliar with the operation of the device can easily understand the operation method.

  In the content display device according to the present invention, it is preferable that the scroll movement processing means controls the display position of the side surface in the direction independently for each side surface.

  By independently controlling the display position in the vertical direction for each side surface, when the second input operation is performed on a certain side surface, the display position in the vertical direction can be changed only for that side surface. Therefore, since the display position in the vertical direction is not changed for the other side surfaces, when the other side surface is subsequently displayed on the screen by the first input operation, the display position in the vertical direction is not affected. The previously displayed vertical position is displayed. Therefore, when moving to another side surface, it is possible to prevent the trouble of scrolling again and returning to the original display position.

  In the content display device according to the present invention, the category of the content is defined for each of the side surfaces, and the images arranged on the side surfaces belong to the category defined for the side surface. The image of the content is preferable.

  According to the above configuration, each side includes content classified into a common category for each side. Therefore, it becomes easier to manage the content, and it becomes easier to search for the target content.

  Moreover, in the content display device according to the present invention, a shelf is provided on at least one of the side surfaces, and the display processing unit places the images on the side surface on which the shelf is provided on the shelf. It is preferable to display the shelf so that the display angle of the shelf is changed according to the display position of the shelf in the screen.

  According to the above configuration, even when only a part of the side surface is displayed on the screen, the user can intuitively recognize that the user is looking at the three-dimensional object.

  Further, in the content display device according to the present invention, the display processing means reduces the opacity of at least one of the side surfaces and at least one of the images, and is disposed on the side surface other than the displayed side surface and the side surface. It is preferable to display the above-described image.

  According to the above configuration, the user can recognize images arranged on other side surfaces. Furthermore, the user can intuitively recognize that he is looking at the three-dimensional object.

  In the content display device according to the present invention, it is preferable that the display processing unit changes the opacity of the at least one side surface in accordance with a rotation angle of the polygonal column.

  In the content display device according to the present invention, it is preferable that the input unit is a touch panel provided so as to overlap the screen.

  According to the above configuration, a feeling of directly operating the three-dimensional object can be obtained and the operation can be performed intuitively. Therefore, even a user who operates the content display device for the first time or a user who is not familiar with the operation of the device can perform the operation without difficulty.

  In the content display device according to the present invention, it is preferable that the rotation processing means determines the side surface to be displayed after rotation according to the speed of the first input operation on the touch panel.

  According to the above configuration, the rotation angle can be changed by changing the speed of the first input operation on the touch panel. Therefore, even in a single input operation, the adjacent side surface can be displayed or the adjacent side surface can be displayed depending on the speed.

  In the content display device according to the present invention, it is preferable that the scroll movement processing unit determines a display portion after the scroll movement based on the speed of the second input operation on the touch panel.

  According to the above configuration, the scrolling distance can be changed by changing the speed of the second input operation on the touch panel. For this reason, even with a single input operation, the image can be moved by one row, moved by two rows, or moved further by the speed.

  In the content display device according to the present invention, the first input operation selects the side surface to be displayed, and the rotation processing means performs the selection operation on the touch panel by the first input operation. Preferably, the polygonal column is rotated and displayed to display the selected side surface.

  According to the above configuration, since the target side surface can be displayed by a single input operation, the display can be quickly switched to the target side surface.

  Moreover, in the content display device according to the present invention, at least one of the side surfaces includes the images arranged in a line along the direction, and the images arranged in a line along the direction. Is displayed on the screen, the image is represented by performing an input operation to move the image upward on the screen, starting from one of the images on the touch panel. It is preferable to display a list of the images representing the content related to the content on the screen.

  According to the above configuration, it is similar to the operation of opening the lid where an image corresponding to a certain content is placed, taking out the content related to the content from the inside, and viewing it as a list. For example, it is similar to the operation of opening the lid of a magazine rack, taking out the entire back numbers stored therein, and viewing them as a list. Therefore, it becomes easy for the user to understand the operation.

  In the content display device according to the present invention, the content may be an electronic book, and the image may be a thumbnail image of the electronic book.

  In order to solve the above problems, a content display method according to the present invention is a content display method for displaying a part of a virtual three-dimensional object that is a polygonal column on a screen of a content display device including an input unit. A plurality of images representing content are arranged on each side of the polygonal column, and includes a change processing step for changing the display portion of the virtual three-dimensional object displayed on the screen. In the change processing step, When the first input operation for instructing display of the side surface different from the displayed side surface is performed on the input unit, the virtual 3 with the central axis of the polygonal column as the rotation axis Display the rotation of the dimension object and display the side surface that will be displayed as a result of the rotation, in a direction parallel to the central axis of the displayed side surface When the second input operation for instructing the display of the position is performed on the input unit, the scroll movement of the side surface being displayed in the direction is displayed and the result of the movement is displayed. It has the structure which performs the process for displaying the part which becomes.

  According to the said structure, the effect similar to the content display apparatus which concerns on this invention can be acquired.

  Further, a program for operating the above-described content display device, which is a program for causing a computer to function as the display processing unit, the rotation processing unit, and the scroll movement processing unit, and a computer readable recording the program Various recording media are also within the scope of the present invention.

  The content display device of the present invention displays a part of the virtual three-dimensional object on the screen, rotates the virtual three-dimensional object when the first input operation is performed, and performs the second input operation. In this case, the side surface of the virtual three-dimensional object is moved in the vertical direction. As a result, in the content display device, the operation for searching for an image corresponding to the target content is similar to the work in the actual rotating bookshelf, which is easy for the user to understand and excellent in usability.

It is the figure which showed an example of the display screen in the bookshelf object in this embodiment, and a content display apparatus. It is the figure which showed an example of the display screen which displayed the shelf surface with a bookshelf object in this embodiment. It is the figure which showed an example of the display screen which displayed another shelf surface of the bookshelf object in this embodiment. FIG. 4 is a diagram showing a display screen that appears when the display screen shown in FIG. 3 is operated. (A) is the figure which showed the display content when opening a magazine rack, (b) is the figure which showed the display content when closing a magazine rack. It is the figure which showed the display screen which appears after operating the display screen shown in FIG. It is a figure which shows a part of expanded view of a bookshelf object for demonstrating the transition of a display screen when performing rotation operation in this embodiment. It is a figure which shows a part of expansion | deployment figure of a bookshelf object for demonstrating the transition of a display screen when performing scroll movement operation in this embodiment. It is a figure which shows the bookshelf object for demonstrating translucency of a shelf surface and a thumbnail image when rotating operation in this embodiment is performed. It is a figure which shows the display screen for demonstrating semi-transparency of the thumbnail image when the scroll movement operation in this embodiment is performed. It is a figure which shows the display screen for demonstrating expansion and reduction of a screen display in this embodiment. It is a figure which shows another display screen for demonstrating expansion and reduction of the screen display in this embodiment. It is a block diagram which shows the structure of the content display apparatus of this embodiment. It is a block diagram which shows the hardware constitutions of the content display apparatus of this embodiment implement | achieved using the computer.

  An embodiment of a content display device according to the present invention will be described below with reference to FIGS.

(Content display device)
In the present embodiment, the content display device has a configuration capable of displaying on a screen a part of a rectangular bookcase object having four shelf surfaces placed in a virtual three-dimensional space. On each shelf surface of the bookcase object, thumbnail images of a plurality of electronic books (contents) are arranged in a grid. When the user selects a thumbnail image corresponding to the book that he / she wants to read by tapping on the display screen equipped with the touch panel, the contents of the electronic book are displayed on the screen and the electronic book can be browsed. . A specific configuration of the content display device will be described later.

(Bookcase object)
First, the bookshelf object (three-dimensional object) displayed on the display screen will be described.

  FIG. 1 is a diagram showing a screen of a content display device displaying a rectangular bookcase object having four shelf surfaces and a part thereof. The right side in the figure represents the bookshelf object 10, and the left side in the figure represents the screen 20 of the content display device displaying a part of the bookshelf object 10. In FIG. 1, a region 14 indicated by a broken line frame is a region that is actually displayed on the screen 20 in the bookcase object 10.

  As shown in FIG. 1, the bookshelf object 10 has a form having four shelf surfaces 11. A plurality of shelves are provided on each shelf surface, and thumbnail images 12 of a plurality of electronic books (contents) are displayed on the shelves so as to be placed on the shelves. The user can browse an electronic book corresponding to the selected thumbnail image by performing a selection operation such as a tap operation on the display screen for the thumbnail image in the thumbnail image. Different categories are defined on the four shelf surfaces 11, and thumbnail images 12 of electronic books belonging to the category defined on the shelf surface are arranged on each shelf surface. There are no restrictions on the prescribed categories, but in the present embodiment, the categories are classified into four categories: “unread / recommended”, “recently read books”, “favorites”, and “subscriptions”, and four shelf surfaces. Eleven categories are defined. In the present embodiment, the bookcase object 10 is composed of four shelf surfaces, but is not limited to this. More shelf surfaces may be provided depending on the number of categories.

  There is no limit to the number of shelves 13 provided on the shelf surface 11 and the number of thumbnail images 12 that can be displayed on each shelf 13, and the manufacturer may set appropriately according to the performance of the content display device. In the present embodiment, five standard shelves 13 are displayed at the standard time. Four thumbnail images 12 can be displayed on each shelf 13.

  The thumbnail images 12 displayed on the shelves 13, that is, the electronic books arranged on the shelf surface 11, can be appropriately changed by a user operation.

(Display of bookshelf object)
Next, a display method of the bookshelf object 10 on the screen 20 of the content display device will be described.

  As a display method of the bookcase object 10, two types of display methods of a standard mode and an active mode are defined. In both the standard mode and the active mode, a virtual viewpoint is placed in a direction orthogonal to the central axis X of the bookcase object 10, and the state viewed from there is displayed. In this specification, the surface facing this viewpoint is referred to as the front. Accordingly, the front portion of the bookcase object 10 is displayed on the screen 20 of the content display device. Although details will be described later, in the present embodiment, when the display area in the bookcase object 10 displayed on the screen 20 is changed, the position of the viewpoint is moved in a direction parallel to the central axis X or the central axis X is centered. The bookcase object 10 is rotated or the shelf surface 11 of the bookcase object 10 is moved while keeping the position of the viewpoint as it is. Thereby, the area visible from the virtual viewpoint is changed, and the position of the area 14 displayed on the screen 20 is changed. As another embodiment, the display area in the bookcase object 10 displayed on the screen 20 can be changed by rotating the viewpoint around the bookcase object 10 about the central axis X. However, even in this case, the viewpoint position is not moved in a direction parallel to the central axis X. In addition, in order to view the bookcase object 10 from a distance, it is possible to execute a process of pulling the viewpoint position away from the bookcase object 10, or to perform a process of pulling the bookcase object 10 away from the viewpoint without changing the viewpoint position. . Thereby, the range displayed on the screen 20 in the bookshelf object 10 can be changed. Furthermore, the size of the range displayed on the screen 20 of the bookshelf object 10 can be changed by changing the angle of view of the viewpoint while maintaining the position of the viewpoint.

  The standard mode is a mode in which only the front shelf surface 11 is displayed and the shelf surface 11 adjacent to the displayed shelf surface 11 is not displayed when no operation is performed. When the book shelf object 10 is not operated, only the shelf 13 and the thumbnail image 12 are displayed on the screen 20 as the structure of the book shelf object 10.

  On the other hand, the active mode is a mode in which the front shelf surface 11 and the shelf surface 11 adjacent to the front shelf surface 11 are displayed when not being operated, and approximate to a state in which the bookcase object 10 is viewed from a distance farther than the standard mode. Is done. In addition to displaying the adjacent shelf surfaces 11, only the next shelf surface 11 may be displayed. In the active mode, the opacity of each shelf surface 11 is lowered in order to display the left and right shelf surfaces 11 adjacent to the shelf surface 11 on the front and the thumbnail images on the shelf surface 11. In the active mode, the user can more intuitively recognize that the bookcase object 10 is a rectangular parallelepiped placed in the virtual three-dimensional space. In this specification, when the opacity is other than 100% and 0%, it is referred to as “translucent”. In the present embodiment, the surface facing away from the front surface is not displayed, but may be displayed with reduced opacity (increased transparency).

  Switching between the standard mode and the active mode can be performed by a user input operation.

  Hereinafter, a display screen in the standard mode will be described.

  FIG. 2 is a diagram showing the display content of the screen 20 in the standard mode.

  As shown in FIG. 2, the shelf 20 and the thumbnail images 12 of the books are displayed on the screen 20 so that each thumbnail image 12 is placed on the shelf 13. In the upper part of the screen 20, an indicator indicating the category of each shelf surface 11 of the bookcase object 10 is provided, and by changing the display method of this indicator (lighting, reverse display, etc.), which category of shelf surface is currently present 11 is displayed. For example, FIG. 2 shows a state where the “unread / recommended” indicator is lit and the shelf surface 11 of “unread / recommended” is selected and displayed. This indicator also serves as a shelf surface selection button 17 described later. Further, operation input buttons 18 for executing each function of the content display device are displayed at the bottom of the screen 20. The status display portion 21 at the top of the screen 20 displays the date and time, the battery remaining amount display, the network reception state, and the main unit setting state. A scroll bar is displayed when a scroll operation to be described later is performed, but the scroll bar is not displayed after a predetermined time has elapsed. In this embodiment, when a newly recommended book is distributed, a balloon icon is displayed on the “unread / recommended” indicator.

  In the present embodiment, as shown in FIG. 1, when the area 14 displayed on the screen 20 is cut off in the middle of the thumbnail image 12, the thumbnail image 12 is not displayed on the screen 20. Yes. Accordingly, all the thumbnail images 12 are displayed on the display screen. However, the present invention is not limited to this. For example, the image may be temporarily displayed after a rotation process and a scroll movement process, which will be described later, and may be made transparent after a certain period of time and not displayed. Alternatively, instead of non-display, a semi-transparent display may be used. At that time, the transparency (opacity) can be proportional to the ratio between the area of the thumbnail image 12 that is off the screen 20 and the area that is displayed on the screen 20. Furthermore, it is also possible to display once after the rotation process and the scroll movement process, and to perform semi-transparent display based on the above ratio after a certain time has elapsed.

  In the standard mode, the front shelf surface 11 is viewed from a slightly lower position. Therefore, as shown in FIG. 2, the upper surface of the shelf 13 provided on the shelf surface 11 is displayed on the screen 20. Further, when the front shelf surface 11 is looked down slightly from above, the lower shelf 13 has a better upper surface, so the size of the upper surface of the shelf 13 displayed on the screen 20 is the shelf 13. As the position becomes lower on the screen 20, the position becomes larger. In addition, since each thumbnail image 12 is not hidden by the shelf 13, it is easier to find the target thumbnail image 12 when looking down from above.

  FIG. 2 shows a state in which the thumbnail images 12 are arranged in the vertical direction and the horizontal direction of the shelf surface 11. In the present embodiment, this is a display method for displaying shelf surfaces corresponding to categories “unread / recommended”, “recently read books”, and “favorites”.

  Next, with reference to FIG. 3 and FIG. 5, the display method of the shelf surface 11 whose category is “regular subscription” will be described.

  FIG. 3 is a diagram showing a display state of the screen 20 displaying the shelf surface 11 whose category is “subscription” in the standard mode. The shelf surface 11 of the regular subscription is a shelf surface that manages periodicals such as weekly and monthly magazines including back numbers. The shelf surface 11, which is a regular subscription shelf, is automatically classified into magazine racks for each subscription magazine to be distributed in order to view books distributed by regular subscription distribution. As shown in FIG. 3, unlike the case shown in FIG. 2, the thumbnail images 12 are arranged in a line in the vertical direction on the left side of the shelf surface 11 on the shelf surface 11 of the regular subscription. Each of these is a thumbnail image of the latest issue of each book that is subscribed, and the image is such that the latest issue is placed in the magazine rack. In other words, it resembles a state in which magazine racks of books are arranged in the vertical direction in an actual bookcase. Next to the thumbnail image 12, information 15 of the book that is regularly subscribed, such as the series name of the book, the title name, the publisher, the number of the latest issue and a description, is displayed in text. Further, a selection button 16 for displaying the back number of the magazine is provided next to the magazine. In order to display the back number of the magazine, in addition to selecting the selection button 16, a flick operation is performed in the upward direction on the screen 20 starting from the image of the magazine rack on which the book (the thumbnail image of the cover) is placed. Alternatively, it is possible to perform a drag operation. Here, the flick operation is an operation by an operation in which a user's finger is brought into contact with the touch panel and then immediately played in an arbitrary direction. The drag operation is an operation by an operation of moving the user's finger in an arbitrary direction while keeping the user's finger in contact with the touch panel.

  4A shows a list of back numbers displayed by opening a magazine rack by flicking or dragging. FIG. 4B shows closing a magazine rack by flicking or dragging. It is a figure which shows the animation when returning to the list display of each latest issue. By touching the image of the selected magazine rack on the touch panel and flicking or dragging the screen 20 upward, as shown in FIG. 4A, the selected magazine rack (FIG. 4A and FIG. 4 (b), which is indicated by “C”) is moved upward in the screen 20, and an animation is displayed such that the lid of the magazine rack C is opened, and the other magazine racks A, B, D, and The row E scrolls up and down and disappears from the screen. Then, thumbnail images of the back numbers in the magazine rack C are sequentially displayed and aligned under the stage of the magazine rack C, and the back numbers are displayed as a list (see FIG. 5). On the other hand, when the back number is displayed, the displayed magazine rack C is flicked or dragged downward on the screen 20 on the touch panel to be selected as shown in FIG. As the magazine rack C moves to the original position, an animation that the lid of the magazine rack C closes is displayed, and the other magazine racks A, B, D, and E have different levels. Scroll up and down to move from outside the screen.

  The display and non-display of the back number by the flick operation or the drag operation in the vertical direction starting from the image of the magazine rack is similar to the movement when opening and closing the actual magazine rack. Therefore, the operation method is easy for the user to understand.

  FIG. 5 is a diagram showing a screen 20 when a list of back numbers of subscription magazines on the screen shown in FIG. 3 is displayed by the above operation. When the input operation for displaying the back number is performed, the display of the magazine racks other than the selected magazine rack disappears, and the display of the selected magazine rack moves to the upper part of the screen 20 and each of the magazine racks below it. A transition is made to a state in which thumbnail images 12 'of back numbers are arranged in a grid and the back numbers of the magazines are displayed in a list. In this screen configuration, the selected magazine rack and the thumbnail image 12 of the cover of the latest issue are displayed at the top of the screen 20. A book information 15 is also displayed next to the book. Further, a close button 19 is displayed next to the selection button 16 for displaying the back number. The close button 19 is a button for returning from the back number list display to the list display of the latest issue of each subscription book. As described above, the list display of the latest issue can also be returned by flicking or dragging the magazine rack.

  The user can select a desired back number from the list display. This is similar to the actual operation of opening the magazine rack of the bookshelf, taking out each back number, and selecting the back number you want to read from it. Therefore, even if the total number of magazines reaches several hundreds, the user can easily select a target magazine. When the number of back numbers is large, scroll display can be performed.

  Next, a method for changing the display content on the screen 20 by moving the bookcase object 10 or its shelf surface 11 in the virtual three-dimensional space will be described.

(Bookcase object rotation)
In the virtual three-dimensional space in the display screen, the shelf surface 11 displayed on the screen 20 is rotated by rotating the central axis X (see FIG. 1) of the rectangular parallelepiped (polygonal prism) constituting the bookcase object 10 as a rotation axis. How to change the will be described.

  By a user input operation, the bookcase object 10 can be rotated in the virtual three-dimensional space in the screen 20 with the central axis X as the rotation axis. By rotating the bookcase object 10, the shelf surface 11 that comes to the front can be changed, and the shelf surface 11 displayed on the screen 20 can be changed. Alternatively, the plurality of shelf surfaces 11 can be viewed simultaneously by stopping in the middle of rotation.

  In the present embodiment, the bookshelf object 10 is rotated by performing a flick operation in a direction substantially perpendicular to the rotation axis (horizontal direction on the screen) on the touch panel provided so as to be superimposed on the screen 20. ing. Specifically, the book shelf object 10 is rotated in the same direction as the flick operation direction by the flick operation so that the adjacent shelf surface 11 or the adjacent shelf surface 11 comes to the front and is displayed on the screen 20. Become.

  FIG. 6 is a developed view of the shelf surface 11 of the bookcase object 10 for explanation. However, illustration of the top and bottom surfaces is omitted. A region 14 surrounded by a broken line frame is a portion actually displayed on the screen 20. FIG. 6A shows the display area before rotation, and the shelf surface 11 a corresponding to the “unread / recommended” category is in front and displayed on the screen 20. In this state, when it is desired to display the shelf surface 11b corresponding to the category of “recently read book”, which is the adjacent surface of the shelf surface 11a, the direction opposite to the shelf surface 11b as viewed from the shelf surface 11a (indicated by the arrow A in the figure). Flick in the direction). Thereby, the bookshelf object 10 rotates so that the shelf surface 11a moves in the direction of the arrow A on the screen, the shelf surface 11b comes to the front, and the area 14 on the shelf surface 11b is displayed on the screen ( FIG. 6 (b)). Since there is no vertical movement during the rotation operation, the area 14 displayed on the screen 20 is shifted from the area 14 ′ relatively sideways in the development view.

  Whether the adjacent shelf surface 11 is displayed by the flick operation or whether the adjacent shelf surface 11 is displayed is determined by the speed of the flick operation. For example, when the flick operation speed is slow, the adjacent shelf surface 11 is displayed (rotation by one surface), and when the flick operation speed is fast, the adjacent shelf surface 11, that is, before rotating. Display the shelf surface 11 on the opposite side of the shelf surface 11 displayed in (2). The manufacturer may appropriately determine which shelf surface 11 is displayed at what speed.

  Further, it is possible to rotate the bookshelf object 10 by performing a drag operation in a direction substantially orthogonal to the rotation axis on the touch panel. Specifically, the book shelf object 10 is rotated in the same direction as the drag direction by the drag operation, and the adjacent shelf surface 11 comes to the front and is displayed. The shelf surface 11 to be displayed can be changed by rotating the bookshelf object 10 by a drag operation and releasing the finger from the touch panel when the desired shelf surface 11 is substantially in front. In the present embodiment, when the drag operation is finished in the middle of the rotation to the adjacent shelf surface 11, it is determined whether to further rotate or return the rotation according to the rotation angle up to that time, One of the shelf surfaces 11 is displayed. Until the finger is released from the touch panel, the rotation operation follows the finger movement of the drag operation. Therefore, if the bookshelf object 10 is slightly rotated by the drag operation and the finger is brought into contact with the touch panel as it is, the state where the adjacent shelf surface 11 is displayed halfway can be maintained.

  In addition to changing the shelf surface 11 to be displayed, the shelf surface 11 to be displayed can be changed by operating the shelf surface selection button 17 that can directly specify which shelf surface 11 is displayed. The shelf surface selection button 17 is displayed as an object in the upper part of the screen 20 and allows a button selection operation to be input by a touch panel. Also in this case, the state where the bookshelf object 10 rotates until the selected shelf surface 11 is displayed is displayed on the screen. The rotation direction at this time can be determined by the previous user operation, the rotation angle, the setting by the manufacturer, and the like. When the shelf surface 11 to be displayed is selected by the shelf surface selection button 17, the bookshelf object 10 is automatically rotated until the designated shelf surface 11 is reached. Therefore, it is possible to switch to the target shelf surface 11 more quickly than by rotating the bookshelf object 10 by the flick operation and displaying the target shelf surface 11.

  In this embodiment, when an input operation for rotating the bookcase object 10 is performed in a state where the back numbers of the subscription books on the shelf surface 11 of the subscription are listed, the bookcase object 10 is rotated. However, the system automatically returns to the latest issue list display screen.

  The category of the book included is determined for each shelf surface, and can be moved to the shelf surface of the target category by rotating the book shelf object. Since the shelf surface 11 of the category of the target book is displayed and the target book only needs to be selected, it is easy to access the target book.

(Shelf vertical scroll)
A method for changing the display area on the display shelf surface by moving the specific shelf surface 11 of the bookcase object 10 in the vertical direction in the virtual three-dimensional space in the display screen will be described.

  The length of each shelf surface 11 in the vertical direction of the bookcase object 10 exceeds the length that can be displayed on the screen 20 of the content display device at a time. Therefore, regarding the shelf surface 11 displayed on the screen 20, the area actually displayed is only a part of the shelf surface 11 as shown in FIG. In the case shown in FIG. 1, the area 14 surrounded by the broken line frame is a part that is actually displayed on the screen 20, and the other part of the same shelf surface 11 is not displayed on the screen 20. Therefore, in the content display device, the position of the area 14 displayed on the screen 20 is changed by moving the shelf surface 11 displayed on the screen 20 in the vertical direction, and the area that has not been displayed so far is displayed on the screen. 20 is displayed. The movement process in the vertical direction of the shelf surface 11 can be executed by a user input operation.

  In the present embodiment, by performing a scroll operation in the direction to be moved on the touch panel, the shelf surface 11 is moved in the same direction as the scroll operation direction, and an area that has not been displayed is displayed. is there. Examples of the scroll operation include a vertical flick operation and a drag operation. When the flick operation is performed, the movement distance of the shelf surface 11 is determined according to the speed of the flick operation, and the shelf surface 11 moves based on the determination. The manufacturer may appropriately determine how much the shelf surface is moved at what speed. When the drag operation is performed, the shelf surface moves following the drag operation, and the shelf surface movement ends when the finger is released from the touch panel.

  FIG. 7 is an expanded view of the shelf surface 11 of the bookcase object 10 for explanation. A region 14 surrounded by a broken line is a region actually displayed on the screen 20. FIG. 7A shows a state before the scroll operation, in which the uppermost part of the shelf surface 11a is displayed. When it is desired to display the lower part of the shelf surface 11a, a scroll operation is performed upward (in the direction of arrow B in the figure) with respect to the shelf surface 11a. As a result, the shelf surface 11a moves upward, and as a result, the area 14 displayed on the screen 20 moves relatively downward relative to the area 14 ′ displayed before the movement (FIG. 7B). )).

  The movement of the shelf surface 11 in the vertical direction is controlled independently between the shelf surfaces 11. That is, the shelf surface 11 that moves in the vertical direction by the scroll operation is only the shelf surface 11 that is in front and displayed on the screen 20 during the operation. For example, as shown in FIG. 7A, the scroll operation is performed on the shelf surface 11a in a state where the uppermost portions of the shelf surfaces 11a to 11d are displayed when the shelf surfaces 11a to 11d are displayed. The shelf surface 11a is moved upward and the display area on the shelf surface 11a is moved further downward. At this time, as shown in FIG. 7B, the shelf surface 11 moving upward is only the shelf surface 11a, and the other shelf surfaces 11b to 11d are not changed in the vertical direction. Therefore, in this state, even when the rotation operation is performed on the bookcase object 10 to display the other shelf surfaces 11b to 11d, the uppermost portions of the shelf surfaces 11b to 11d are still displayed on the shelf surfaces 11b to 11d. It has become so. Therefore, even if the shelf surface 11a is scroll-moved in the vertical direction, the other shelf surfaces 11b to 11d maintain the state when the shelf surface was viewed last time.

  For example, when the number of thumbnail images 12 arranged on the shelf surface 11b corresponding to the category of “Recently read books” is small and arranged only on the shelf surface 11b, the top of the shelf surface 11b is displayed. In this state, it is assumed that the bookshelf object 10 is rotated and moved to the “unread / recommended” shelf surface 11a, and then the lowermost portion of the shelf surface 11a is displayed by a scroll operation. At this time, when the bookshelf object 10 is rotated again to display the shelf surface 11b, if the lowermost portion of the shelf surface 11b is displayed, the shelf surface 11b with no thumbnail image 12 is displayed. End up. For this reason, it seems that the user seems to have lost the book, which is not preferable. Moreover, since the user needs to perform the scroll operation again to display the uppermost part of the shelf surface 11b, it is inconvenient for the user. However, in this content display device, when the bookshelf object 10 is rotated again and returned to the shelf surface 11c, the state of the shelf surface 11c that has been viewed, that is, the uppermost portion of the shelf surface 11c is displayed. Therefore, when the user redisplays the shelf surface 11c, a new operation becomes unnecessary. At this time, the vertical position of the shelf surface 11a is maintained at the position after the scroll movement.

  The above-described screen display and the operation of operating the bookcase object and the shelf surface displayed on the screen are reminiscent of the operation of the rotary bookcase placed in a bookstore or the like. Therefore, even a person who contacts the content display device according to the present invention for the first time or a person unfamiliar with the operation of the device can easily understand the operation method of the content display device. That is, it can be said that the user interface is easy to operate for the user.

  Note that, unlike a rotary bookcase placed in a bookstore or the like, for example, when looking at the lower side of the shelf surface, only the shelf surface being viewed can be moved upward. Further, the bookcase object can be rotated in this state. Therefore, after looking at a different height position on one shelf surface, when the bookcase object is rotated, the original height on the other shelf surface is restored without returning the viewpoint to the original height position. You can see the location.

(Transparency treatment)
In the content display device, when the rotation of the bookcase object 10 and the scroll movement of the shelf surface 11 are displayed on the screen 20, the shelf surface 11 and a part of the thumbnail image 12 are made translucent. Hereinafter, a description will be given with reference to FIGS.

  FIG. 8 is a diagram illustrating translucency when displaying the rotation of the bookcase object 10. For convenience of explanation, only one thumbnail image 12 is shown. FIG. 8A shows the display state before the rotation processing, and here, the displayed shelf surface 11a and the opacity of the thumbnail image 12a on the shelf surface 11a are 100%. Therefore, the adjacent shelf surface 11b and shelf surface 11d and thumbnail images pasted on these are not displayed on the screen 20.

  FIG. 8B is a diagram showing a state in which the book shelf object 10 is rotating in the standard mode when an input operation is performed to change the shelf surface 11 displayed on the screen 20 from the shelf surface 11a to the shelf surface 11b. It is. In FIG. 8B, the rotation advances 45 degrees or more, and the display area on the screen 20 of the shelf surface 11b displayed next is larger than the display area on the screen 20 of the shelf surface 11a displayed before the rotation processing. The case where the display area is larger is shown. At this time, the shelf surface 11a that has been displayed and the thumbnail image 12a on the shelf surface 11a are displayed in a translucent manner. On the other hand, the opacity of the next displayed shelf surface 11b and the thumbnail image 12b on the shelf surface 11b is displayed without being lowered, but the present invention is not limited to this. The shelf surface 11b to be displayed next and the thumbnail image 12b on the shelf surface 11b may also be translucently displayed. In this case, the adjacent surface (shelf surface 11c) of the shelf surface 11b which is not the shelf surface 11a is not displayed. When the two surfaces displayed during the rotation are both translucent, it is preferable that the sum of the respective opacity ratios (%) is 100.

  Although not shown, the rotation is less than 45 degrees, and the display area on the screen 20 of the shelf surface 11a displayed before the rotation processing is the screen of the shelf surface 11b displayed next. When the display area is larger than the display area on the shelf surface 11a and the shelf image 11a displayed on the shelf surface 11a, the opacity of the thumbnail image 12a displayed on the shelf surface 11a remains unchanged and the shelf surface 11b and the shelf displayed next are displayed. The thumbnail image 12b on the surface 11b is displayed semi-transparently. Even when the rotation is less than 45 degrees, the shelf surface 11a that has been displayed and the thumbnail image 12a on the shelf surface 11a may be displayed semi-transparently.

  FIG. 8C is a diagram showing a state in which the bookcase object 10 is rotating in the active mode when an input operation is performed to change the shelf surface 11 displayed on the screen 20 from the shelf surface 11a to the shelf surface 11b. It is. In FIG.8 (c), rotation advances 45 degree | times or more, and the display area on the screen 20 of the shelf surface 11b displayed next is displayed rather than the display area on the screen 20 of the shelf surface 11a displayed before the rotation process. The case where the display area is larger is shown.

  When the shelf surface 11a is in front, in the active mode, the shelf surface 11a is also translucently displayed, so the shelf surface 11d adjacent thereto and the thumbnail image 12d on the shelf surface 11d are also displayed. When rotated so that the shelf surface 11b adjacent to the shelf surface 11a on the side opposite to the shelf surface 11d is displayed, when the rotation angle is less than 45 degrees, the shelf surface 11d and the thumbnail image 12d are still displayed. ing. However, when the rotation angle becomes 45 degrees or more, the shelf surface 11d and the shelf surface 11d are not displayed. On the other hand, the shelf surface 11c and the shelf surface 11c adjacent to the shelf surface 11b to be displayed next are displayed on the screen 20 in a translucent display (FIG. 8C).

  In the active mode, all three shelf surfaces 11 are displayed on the screen 20 in a semi-transparent display during the rotation, but the shelf surface having the largest display area on the screen 20 among the three shelf surfaces 11, that is, the rotation. When the angle is less than 45 degrees, the shelf surface 11a that has been in front until now, and when the rotation angle is 45 degrees, the shelf surface 11a that has been in front until now and the shelf surface 11b that is next in front, and the rotation angle Is greater than 45 degrees, the opacity of the shelf surface 11b next to the front is the largest.

  FIG. 9 is a diagram for explaining the translucency when displaying the scroll movement of the shelf surface 11. In the content display device, when the scroll movement of the shelf surface 11 is displayed, the thumbnail image 12 that is no longer displayed on the screen 20 is displayed in a translucent manner. The degree of opacity is changed according to the proportion of the displayed portion of the thumbnail image 12 that is no longer displayed. Here, the opacity is reduced (transparency is increased) as the number of displayed parts decreases.

  FIG. 9A shows a display on the screen 20 before scrolling. In FIG. 9, for convenience of explanation, the display other than the thumbnail image 12 is omitted. At this time, in order to display the thumbnail image 12 on the upper side, an input operation for scrolling the shelf surface 11 downward such as a flick operation downward on the screen is performed. Then, a part of the thumbnail image 12 f displayed at the bottom of the screen 20 before the operation is not displayed on the screen 20. Therefore, the thumbnail image 12f is displayed translucently. At this time, as shown in FIG. 9B, when the portion that is no longer displayed is about 20% of the total area of the thumbnail image 12f, the opacity of the thumbnail image 12f is, for example, 50% (transparency 50%). can do. At this time, as the thumbnail image 12 whose opacity has not decreased, the thumbnail image 12e that is one step above the shelf 13 from the thumbnail image 12f is the lowest step. Furthermore, as shown in FIG. 9C, when the portion that is no longer displayed is about 50% of the total area of the thumbnail image 12f, the opacity of the thumbnail image 12f is set to 20% (transparency 80%), for example. Can do. Furthermore, as shown in FIG. 9D, when the portion that is no longer displayed is about 80% of the total area of the thumbnail image 12f, the thumbnail image 12f can be made completely transparent and hidden, for example.

  In the present embodiment, the thumbnail image 12 that disappears from the lower side of the screen 20 by scrolling downward in the screen has been described. However, at this time, the thumbnail image 12 appears in the screen from the upper side of the screen 20. Similar processing is performed for the incoming thumbnail image 12. That is, when the thumbnail image 12 appears in the screen 20 from the upper side, the opacity of the thumbnail image 12 depends on the ratio between the portion displayed on the screen 20 and the portion not displayed on the screen 20. Is changing.

  By making the shelf surface partially translucent or changing the degree of translucency, the user can feel that he is operating a three-dimensional object. In addition, by displaying the adjacent shelf surface 11, it is known what category the shelf surface 11 is adjacent to, or what book (thumbnail image) is placed on the shelf surface 11. The target book can be found more easily.

  In addition to this, even if the transparency (opacity) is changed in the vertical scroll of the magazine rack when changing from the screen display displaying each latest issue on the shelf surface 11 of the subscription to the list display of the back numbers. Good. Further, the transparency (opacity) may be changed at the time of enlargement / reduction change by a pinch-in operation or a pinch-out operation described later.

(Enlarged, reduced display)
In the state where the shelf surface 11 on the front is displayed on the screen 20, the number of thumbnail images 12 displayed on one screen can be changed. FIG. 10 is a diagram illustrating an example of a display pattern of thumbnail images displayed on the screen 20. 10A shows a state in which 20 thumbnail images 12 are displayed, and FIG. 10B shows a state in which 28 thumbnail images 12 are displayed. If each thumbnail image 12 is displayed to be large, each thumbnail image is easy to see, but the number of thumbnail images 12 that can be displayed on the screen 20 at a time (correlated with the number of shelves 13 that can be displayed at one time) decreases. To do. On the other hand, by displaying the thumbnail images 12 so as to be small, it becomes possible to display many thumbnail images 12 at a time.

  The number of thumbnail images 12 displayed on the screen 20 can be changed by a user input operation. Specifically, by performing a pinch-out operation on the touch panel, the shelf surface 11 is enlarged and each thumbnail image 12 is displayed in a large size. On the other hand, by performing a pinch-in operation on the touch panel, the shelf surface 11 is reduced and each thumbnail image 12 is displayed smaller. Here, the pinch-out operation is an operation in which two fingers of the user are simultaneously brought into contact with the operation surface and the two fingers are opened as they are. The pinch-in operation is an operation in which two fingers of the user are simultaneously brought into contact with the operation surface and the two fingers are closed as they are.

  FIG. 11 is a diagram illustrating a flow of screen display when the shelf surface selection button 17 is tapped and the bookshelf object 10 is rotated and displayed in the standard mode. For convenience of explanation, the thumbnail image 12 is shown only on one shelf surface 11.

  As shown in FIG. 11, in the display state (standard display) in the standard mode, when the bookcase object 10 is rotated by tapping the shelf surface selection button 17, the display is reduced in real time, and the bookcase object 10 is more A combination of displaying in a wide range, switching to a display that can recognize that the bookcase object 10 is a rectangular parallelepiped object in the virtual three-dimensional space, rotating in that state, and after completing the rotation, the display is enlarged and returned to the standard display It is also possible to display animation with.

(Configuration of content display device)
Next, the configuration and function of the content display device that realizes the above display will be described with reference to FIG. FIG. 12 is a block diagram showing a main configuration of the content display device 1 according to one embodiment of the present invention.

  As shown in FIG. 12, the content display apparatus 1 includes an input processing unit 101, a network processing unit 102, an activation processing unit 103, a book data management unit 104, a display information management unit 105, a rotation processing unit (rotation processing means) 106, Scroll processing unit (scroll movement processing unit) 107, book list display processing unit (display processing unit) 108, book content display processing unit 109, output processing unit (display processing unit) 110, input operation unit (input unit) 111, display A unit (screen) 112 and a communication unit 113 are provided.

  The input processing unit 101 acquires the input operation information detected by the input operation unit 111, and instructs the rotation processing unit 106 and the scroll processing unit 107 to execute processing based on the information. Alternatively, the book content display processing unit 109 is instructed to execute the process.

  The network processing unit 102 acquires book data that is content data from a server on the network via the communication unit 113. The book data includes a book image, book information, and book contents. In the present embodiment, these are stored in the content display device 1, but the present invention is not limited to this, and a (cloud) configuration that sequentially obtains them from the server may be used.

  The book data management unit 104 stores the book data acquired by the network processing unit 102 in a storage device and manages the acquired book data. Further, the book data is transmitted in response to requests from the book list display processing unit 108 and the book content display processing unit 109.

  The activation processing unit 103 instructs the display information management unit 105 to execute processing in order to display an image on the display unit 112 when an activation operation is performed on the content display device 1.

  The display information management unit 105 manages an image to be displayed on the display unit 112, and instructs the book list display processing unit 108 to generate a display image when the activation process is performed. Also, when rotating or scrolling, the position information of the front shelf changed by rotation, the scroll position information changed by scrolling, the enlarged / reduced value, the book information when displaying the book contents, the page information of the displayed book When the subscription shelf is displayed, information indicating whether each latest issue is displayed as a list or a back number list is stored in a storage device such as a memory.

  When the input operation unit 111 detects an input operation for rotating the bookshelf object 10 displayed on the display unit 112 and the operation information is received by the input processing unit 101, the rotation processing unit 106 receives the operation information. Based on the above, the animation and image to be displayed on the display unit 112 are processed.

  Similarly, when the input operation unit 111 detects an input operation for scrolling the shelf surface 11 displayed on the display unit 112 and the input processing unit 101 receives the operation information, the scroll processing unit 107 Based on the operation information, an animation and an image to be displayed on the display unit 112 are processed.

  The book list display processing unit 108 acquires book data to be displayed from the book data management unit 104, acquires an image to be displayed from the display information management unit 105, and is processed by the rotation processing unit 106 or the scroll processing unit 107. Information is acquired, and an image and animation for displaying the book list on the display unit 112 are generated and transmitted to the output processing unit 110.

  The book content display processing unit 109 receives the information of the book selected by the user via the input operation unit 111 from the input processing unit 101, acquires the selected book data from the book data management unit 104 based on the information. , Data including the contents of the book is transmitted to the output processing unit 110. When the thumbnail image 12 of the book is tapped and the input operation is accepted by the input processing unit 101, the operation information is transmitted to the book content display processing unit 109, and processing for displaying the content (sentence) of the book is performed. When the input processing unit 101 receives a long tap (long press) input operation and the operation information is transmitted to the book content display processing unit 109, the book name, publisher, author, description of the book, The book information such as publication date is displayed.

  The output processing unit 110 receives the display content generated and transmitted by the book list display processing unit 108 or the book content display processing unit 109, converts it into display data, and causes the display unit 112 to display the display content.

  Each of the above processing units is stored in the memory within the scope of its role, and the type of the shelf surface 11, the thumbnail image 12 of the book, the book data such as the book information, and the previously displayed shelf Display information such as the type of the surface 11 and its scroll position is acquired. In addition to startup, during operation processing, the thumbnail images 12 of the books to be displayed as a list are acquired from the display information and book data, and converted into texture data used for virtual three-dimensional display. Parameters such as a viewpoint for virtual three-dimensional display are calculated from the display information. The book data is three-dimensionally calculated by three-dimensional processing and displayed by display processing. On the other hand, at the time of reading a book, the book content of the book data is acquired and two-dimensional display is performed. Further, when purchasing a book, the book data is purchased from the network and managed by the book data management unit. When the thumbnail image 12 of the purchased book is to be displayed, it is displayed in a virtual three-dimensional manner by the book list display processing unit.

  A person skilled in the art who understands the above-described display contents on the screen 20 of the content display device 1 can apply a known technique such as Open GL (Open Graphics Library) to apply the bookshelf object 10 and each shelf surface 11. Display, rotation of the bookcase object 10 and its display, scroll movement of the shelf surface 11 and its display, and the like. Therefore, a description of a specific data processing method and management method in each processing unit and each management unit for realizing these displays is omitted.

  A touch panel is used as the input operation unit 111.

  The display unit 112 can be configured by a display device including a liquid crystal panel.

  Each processing unit and each management unit described above can be realized using, for example, a computer (electronic computer). FIG. 13 is a block diagram illustrating a hardware configuration of the content display apparatus 1 realized using a computer.

  As shown in FIG. 13, the content display device 1 includes a central processing unit (CPU) 210, an internal storage device (memory) 220, a display 230, and an input device 240 that are connected to each other via a bus 270. Can be connected to an external storage device (external memory) 250 via an input / output interface, and can be further connected to an external network 260 such as the Internet via a network communication device.

  The memory 220 stores various programs for operating the computer as each processing unit and each management unit, and acquired electronic book data.

  The input device 240 is a means for accepting an input operation by a user, and is, for example, a trackball and a touch panel provided on a display.

  The book data can be acquired via the external memory 250 and the communication network 260.

  As described above, in the present embodiment, the content display device is intended as an electronic book terminal for browsing an electronic book. However, the content display device is not limited to this, and may be a mobile phone, a smart phone, a mobile terminal such as an electronic dictionary, or a terminal device such as a personal computer equipped with a monitor.

  An object of the present invention is to supply a recording medium in which the program code of the above program is recorded so as to be readable by a computer to the content display device 1, and the content display device 1 reads and executes the program code recorded on the recording medium. Can also be achieved.

  Examples of the recording medium include a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and an optical disk such as a CD-ROM / MO / MD / DVD / CD-R. Card system such as IC card, IC card (including memory card) / optical card, or semiconductor memory system such as mask ROM / EPROM / EEPROM (registered trademark) / flash ROM.

  Further, the program code may be supplied to the content display device 1 via the communication network 260 connected to the network communication device. The communication network is not particularly limited. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available. Further, the transmission medium constituting the communication network is not particularly limited. For example, even in the case of wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line, etc., infrared rays such as IrDA or remote control, Bluetooth ( (Registered trademark), 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, and the like can also be used. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. That is, embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention.

  INDUSTRIAL APPLICABILITY The present invention can be used for a terminal that displays thumbnail images and icons of a plurality of contents on a screen, and can be particularly preferably used for a portable electronic book terminal.

1 Content display device 10 Bookcase object (3D object)
11, 11a-11d Shelf surface (side surface)
12, 12 ′, 12a to 12c, 11e, 11f Thumbnail images (images)
13 shelf 14 area 17 shelf surface selection button 18 operation input button 19 close button 20 screen 21 status display 101 input processing unit 102 network processing unit 103 activation processing unit 104 book data management unit 105 display information management unit 106 rotation processing unit (rotation processing) means)
107 Scroll processing unit (scroll movement processing means)
108 Book List Display Processing Unit (Display Processing Unit)
109 Book Content Display Processing Unit 110 Output Processing Unit (Display Processing Unit)
111 Input operation unit (input unit)
112 Display (screen)
113 Communication Department

Claims (14)

Screen,
Display processing means for displaying a part of a virtual three-dimensional object in which a plurality of images representing content are arranged on each side of a polygonal column on the screen;
An input section;
When a first input operation for instructing display of the side surface different from the displayed side surface is performed on the input unit, the display processing means is controlled so that the central axis of the polygonal column is set. A rotation processing means for displaying a rotation of the virtual three-dimensional object as a rotation axis and executing a process for displaying the side surface to be displayed as a result of the rotation;
When a second input operation for instructing the display of another position of the side surface displayed in a direction parallel to the central axis is performed on the input unit, the display processing unit is controlled. Scroll movement processing means for executing a process for displaying a scroll movement in the direction of the side surface displayed and a portion to be displayed as a result of the movement, and
In the case where a part of the image is displayed on the screen in response to the second input operation, the display processing means makes the opacity of the image smaller than when the entire image is displayed. A characteristic content display device.   In the case where a part of the image is displayed on the screen in response to the second input operation, the display processing means adjusts the opacity of the image according to the ratio of the displayed part of the image. The content display device according to claim 1, wherein the content display device is changed.   3. The content display device according to claim 2, wherein the display processing means reduces the opacity of the image as the proportion of the displayed portion of the image decreases.   The content display device according to claim 2, wherein the display processing means increases the opacity of the image as the ratio of the displayed portion of the image increases. The display processing means includes
Reducing the opacity of at least one of the side surfaces and at least one of the images, and displaying the side surface other than the displayed side surface and the image disposed on the side surface;
2. The content display device according to claim 1, wherein the opacity of at least one of the side surfaces and at least one of the images is changed in accordance with an angle of rotation of the polygonal column. The input unit is a touch panel provided to overlap the screen,
The said rotation processing means determines the said side surface displayed after rotation according to the speed of the said 1st input operation on the said touch panel, The any one of Claims 1-5 characterized by the above-mentioned. Content display device. The input unit is a touch panel provided to overlap the screen,
The scroll movement processing means determines a display part after scroll movement based on the speed of the second input operation on the touch panel. Content display device.   A category of the content is defined for each of the side surfaces, and each of the images arranged in each of the side surfaces is the image of the content belonging to the category defined for each of the side surfaces. The content display device according to any one of claims 1 to 7. At least one of the side surfaces is provided with a shelf,
The display processing means includes
Each image on the side where the shelf is provided is displayed as being placed on the shelf,
The content display device according to claim 1, wherein a display angle of the shelf is changed in accordance with a display position of the shelf in the screen.   The first input operation selects the side surface to be displayed, and the rotation processing means rotates and displays the polygonal column based on the selection operation on the touch panel by the first input operation. The content display device according to claim 6, wherein the selected side surface is displayed.   The content display apparatus according to claim 1, wherein the content is an electronic book, and the image is a thumbnail image of the electronic book. A content display method for displaying a part of a virtual three-dimensional object that is a polygonal column on a screen of a content display device including an input unit,
A plurality of images representing content are arranged on each side of the polygonal prism,
Including a change processing step of changing a display portion of the virtual three-dimensional object displayed on the screen,
In the above change processing step,
When the first input operation for instructing display of the side surface different from the displayed side surface is performed on the input unit, the virtual three-dimensional with the central axis of the polygonal column as the rotation axis Execute the process to display the above side that will be displayed as a result of the rotation while displaying the rotation of the object,
When the second input operation for instructing display of another position in a direction parallel to the central axis of the displayed side surface is performed on the input unit, the displayed direction of the side surface is displayed. Execute the process to display the part that will be displayed as a result of the movement and the scroll movement to
A content display method characterized in that, when a part of the image is displayed on the screen in response to the second input operation, the opacity of the image is made smaller than when the entire image is displayed. .   A program for operating the content display device according to any one of claims 1 to 11, wherein the computer functions as the display processing means, the rotation processing means, and the scroll movement processing means.   A computer-readable recording medium in which the program according to claim 13 is recorded.

Images