JP5967942B2 - Optical disc display device - Google Patents

Description

  Embodiments described herein relate generally to an optical disc display device.

  2. Description of the Related Art In recent years, optical disk playback devices that play back optical disks on which video and audio are recorded as digital data have become widespread. The optical disk playback device displays recorded content such as movies and music on a display device such as a television or a monitor by playing back video and audio recorded on the optical disk.

  Specifically, when a video recorded on an optical disc (for example, a DVD (Digital Versatile Disk: registered trademark)) in a DVD-Video (Digital Versatile Disk-Video) format is played back by a DVD playback device, the DVD playback device Recording information such as video and subtitles is read from the DVD, and the read video is displayed on a display screen such as a television. In addition, a general DVD playback apparatus also has a menu function for selecting a playback method when playing back a video by combining moving image data and subtitle data related to the video. For this reason, in a DVD playback apparatus, a menu function or the like is displayed on a display screen of a television or the like, and the user selects an arbitrary playback method (see, for example, Patent Document 1).

  By the way, a general menu function includes a button indicating a selectable item and a highlight display indicating that the item has been selected, and is defined by the producer according to the application format (standard). Therefore, the user can select and determine the items constituting the menu function by moving the highlighted button and selecting a desired item based on an arbitrary setting defined by the creator. Can do.

JP 2001-326909 A

  In a general DVD playback apparatus, when a menu function is defined for a DVD of the DVD-Video format, a selectable item to be played back or displayed next is displayed while the current playback or video is being displayed. If there is, a menu item selectable by the user is highlighted on a display screen such as a television.

  However, the setting of items constituting the menu function varies depending on the creator. The menu function forms part of the content as a video. Therefore, the menu function is often regarded as important in appearance. Therefore, depending on the content, the relationship between the arrangement of items constituting the menu function and the moving direction of the highlight display corresponding to the user's operation may be difficult to understand.

  In other words, on the display screen of a television or the like, even if the button arrangement seems to be able to move the highlight display from the position of the currently selected button to the position of another button, depending on the content configuration, The highlight display may not be moved. For this reason, even though the button is displayed on the display screen, the user cannot select the button, so the user may feel uncomfortable or repeat invalid operations that cannot be selected. .

The optical disk display device according to the present embodiment can be selected from the position information indicating the position of the currently selected first button and the position of the first button from the button position information recorded in the content of the optical disk. A position information acquisition unit that acquires position information indicating the position of the second button associated as a destination, and a direction of movement when moving from the position of the first button to the position of the second button operation button corresponding to it is determined whether valid or not the movement direction judging section, for the operation of the button it is determined that the effective movement of the position of the first button to a position of the second button while determining the direction moving direction selectable for the operation of the buttons it is determined that the not valid, moved from the position of the first button to a position of the second button The moving direction determination unit which determines a moving direction can not be selected direction, the movement direction determined as the moving direction the selectable and a display control unit for displaying on the display device, the display control unit may not be the selection For the movement direction, a display indicating that the movement from the position of the first button to the position of the second button cannot be performed is displayed on the display device .

The functional block diagram which showed schematic structure of the function of the optical disk display system which concerns on this embodiment. Explanatory drawing which showed the determination method in which the moving direction determination part which concerns on this embodiment determines whether user operation is effective about arbitrary buttons A. FIG. Explanatory drawing which showed the movement direction determination method in which the movement direction determination part which concerns on this embodiment determines the movement direction of the button with respect to the operation direction in which user operation was judged effective about arbitrary buttons A. FIG. The display example which showed the movement direction of the button in case the display control part which concerns on this embodiment moves to the position of a 2nd button from the position of the button A (1st button) which is the position of the present button. Explanatory drawing when the display control part which concerns on this embodiment acquires the button position information of the button A from DVD, and calculates | requires the center from the position information of the button A. FIG. Explanatory drawing when the display control part which concerns on this embodiment draws a guideline from the center of the button A to the center of the button C. FIG. 1 is a hardware block diagram showing a configuration of an optical disc device according to an embodiment. The flowchart which showed the moving direction display process in which the optical disk apparatus based on this embodiment displays the moving direction of a button. The arbitrary display screen example of DVD displayed on the display apparatus which concerns on this embodiment. The example of a display screen when a chapter is selected in the arbitrary display screen of DVD displayed on the display apparatus which concerns on this embodiment. The example of a display screen when a chapter is selected in the arbitrary display screen of DVD displayed on the display apparatus which concerns on this embodiment. The example of a display screen at the time of applying the icon which shows the direction of the user operation which a user can select on the arbitrary display screen of DVD displayed on the display apparatus which concerns on this embodiment to a chapter.

  Hereinafter, an optical disc display system 300 according to the present embodiment will be described with reference to the accompanying drawings.

  FIG. 1 is a functional block diagram showing a schematic configuration of functions of an optical disc display system 300 according to the present embodiment.

  As shown in FIG. 1, the optical disc display system 300 includes an optical disc device (optical disc display device) 100 and a display device 200.

  The optical disc device 100 is a device that reproduces recorded contents recorded on an optical disc such as a DVD (Digital Versatile Disk: registered trademark) or a CD (Compact Disk) and displays the recorded contents. In the present embodiment, it is only necessary to be able to display a digital image or the like recorded on an optical disc. For example, a DVD-ROM (Digital Versatile Disk Read Only Memory) recorded in a DVD-Video format or a video CD standard is used. Any CD-ROM (Compact Disk Read Only Memory) may be used. In this embodiment, as an example, a case where a DVD-ROM (hereinafter also simply referred to as a DVD) is applied will be described. Details of the optical disc apparatus 100 will be described later.

  The display device 200 has a function of displaying a video recorded as content on a DVD, various operation screens, a guidance screen, and the like as a user interface. The display device 200 is configured by, for example, a liquid crystal display (LCD). Note that the content refers to information recorded on a DVD that can be viewed by the user on the display device 200 or the like, and includes, for example, video, images, music, characters, or combinations thereof.

  In this embodiment, the user selects and executes an item corresponding to the button by selecting and determining a button constituting a part of the content recorded on the DVD on the display screen of the display device 200. be able to.

  In the present embodiment, the description will be made in the form of an optical disc display system 300 in which the optical disc device 100 and the display device 200 are separately provided, but the present invention is not limited to this. For example, a portable DVD playback device in which the optical disk device 100 and the display device 200 are integrated may be used, or a DVD playback device including a display unit for in-vehicle use may be used.

  Next, details of the optical disc apparatus 100 constituting the optical disc display system 300 will be described.

  The optical disc apparatus 100 shown in FIG. 1 includes a position information acquisition unit 110, a movement direction determination unit 120, a movement direction determination unit 130, and a display control unit 140.

  The position information acquisition unit 110 includes the position information of the currently selected first button (position information indicating the position of the first button) from the button position information recorded in the DVD content, and the first button. The position information (position information indicating the position of the second button) of the second button associated with the selectable destination is acquired from the position.

  For example, when there is a button A (first button) as an arbitrary button, when the button A is selected, position information of a button B (second button) that can be selected next from the button A is displayed as a button. Acquired together with the position information of A. Here, the second button corresponding to the button B is not limited to one, and when the button A can move in a plurality of directions from the position of the button A, Each of the position information is acquired.

  When the first button is not selected because of the initial state, the optical disc apparatus 100 automatically selects the button displayed at the top of the buttons constituting the menu function as an initial setting. It is like that.

  The movement direction determination unit 120 has a function of determining whether or not the operation of the button corresponding to the movement direction is valid when moving from the position of the first button to the position of the second button. Here, detailed functions of the moving direction determination unit 120 will be described with reference to the drawings.

  FIG. 2 is an explanatory diagram illustrating a determination method in which the movement direction determination unit 120 according to the present embodiment determines whether a user operation is valid for an arbitrary button A500. The first button described above will be described as button A500.

  As illustrated in FIG. 2, the movement direction determination unit 120 determines the first information from the position information of the button A500 acquired by the position information acquisition unit 110 and the position information of the second button that is a movement destination that can be selected from the position of the button A500. When the 2 button is selected, it is determined whether the user operation corresponding to the moving direction of the button is valid or invalid.

  For example, when the position information of the second button associated as the selectable destination is in the downward direction when viewed from the position of the button A500 on the page, the movement direction determination unit 120 displays the user in the downward direction from the button A500. It is determined that it is effective to move to the second button in the downward direction by the operation. Further, when the position information of the second button associated as the selectable movement destination is in the right direction when viewed from the position of the button A500 on the page, the movement direction determination unit 120 displays the user in the right direction from the button A500. It is determined to be effective to move to the second button in the right direction by the operation.

  On the other hand, when the position information of the second button associated with the selectable destination does not exist when viewed from the position of the button A500 on the page, that is, as the destination selectable in the upward and left directions of the button A500. When there is no position information of the associated second button, the movement direction determination unit 120 determines that the user operation from the button A500 in the upward direction and the left direction is invalid.

  As described above, the movement direction determination unit 120 determines that the user operation moving downward and right from the button A500 is valid, and determines that the user operation moving upward and left from the button A500 is invalid. Can do.

  In the present embodiment, it is assumed that movement in the four directions of up, down, left and right is permitted using the cross key, but the present invention is not limited to this. For example, a lower right upper left lower upper right upper left may be added, and a direction key that allows movement in eight directions may be employed to determine whether the user operation is valid or invalid.

  The movement direction determination unit 130 determines the position of the first button based on the position information of the first button and the position information of the second button with respect to the movement direction in which the user operation is determined to be valid by the movement direction determination unit 120. Has a function of determining the moving direction from the position of the button to the position of the second button. Here, detailed functions of the movement direction determination unit 130 will be described with reference to the drawings.

  FIG. 3 is an explanatory diagram illustrating a movement direction determination method in which the movement direction determination unit 130 according to the present embodiment determines the movement direction of a button with respect to an operation direction in which a user operation is determined to be valid for an arbitrary button A500. is there.

  As shown in FIG. 3, the second button in the downward direction as viewed from the button A500 on the page is referred to as a button B510, and similarly, the second button in the lower right direction as viewed from the button A500 on the page is referred to as a button C520. Each button is displayed on the display device 200 (FIG. 1) with the button D530 being the button that is upward when viewed from the button A500 on the page and the button E540 being left when viewed from the button A500 on the page. ing.

  The movement direction determination unit 130 determines the movement direction in which the second button is positioned with respect to the operation direction in which the user operation is determined to be valid from the position of the button A500 (first button) on the page. The highlight display is moved to the button B510 located in the downward direction of the button A500 by the user operation in the downward direction as viewed. Further, the movement direction determination unit 130 moves the highlight display to a button C520 located at the lower right of the button A500 by a user operation in the right direction when viewed from the button A500 on the page. The selection of the button by the user operation is made to be recognized by the user by moving the highlight display.

That is, in the case of FIG. 3, the movement direction determination unit 120 determines that the user operation in the downward direction and the right direction is valid as the user operation direction of the button A500. By the user operation in the direction, the moving direction of the highlight display is assigned from the button A500 to the button B510 positioned in the downward direction of the button A500, and the moving direction of the button is determined. Further, by the user operation from the button A500 in the right direction, the movement direction of the highlight display is assigned from the button A500 to the button C520 located at the lower right of the button A500, and the movement direction of the button is determined. Since the button D530 and the button E540 are not associated as selectable destinations and the user operation is determined to be invalid, the movement direction determination unit 130 may perform the user operation in the upward direction or the left direction. The highlight display is not moved.

  The display control unit 140 has a display control function for causing the display device 200 to visually display the movement direction up to the second button determined by the movement direction determination unit 130. For this reason, the display control unit 140 displays the moving direction in which the second button as viewed from the first button is displayed on the display screen of the display device 200.

  FIG. 4 is a table showing the moving direction of the button when the display control unit 140 according to the present embodiment moves from the position of the button A500 (first button), which is the current button position, to the position of the second button. It is an example.

  As illustrated in FIG. 4, the display control unit 140 includes a guideline 600 indicating a movement route from the button A500 to which the current button is selected to the button C520, and an icon indicating the direction of the user operation to the button C520 that is the movement destination. 610 is displayed on the display device 200 (FIG. 1). Further, the display control unit 140 displays, on the display device 200 (FIG. 1), an icon 620 indicating the direction of user operation from the button A500 in which the current button is selected to the button B510 positioned in the downward direction of the button A500. I am letting. Note that since the button D530 and the button E540 are not associated as selectable destinations, no icon or the like indicating the selectable user operation direction is displayed.

  Here, a method for drawing the guideline 600 shown in FIG. 4 will be described.

  FIG. 5 is an explanatory diagram when the display control unit 140 according to the present embodiment obtains the button position information of the button A500 from the DVD and obtains the center from the position information of the button A500.

  As shown in FIG. 5, the area of the button A500 is represented by (X, Y) coordinates. Therefore, the area 150 of the button A500 is displayed as a rectangular area surrounded by the start point P (Xp, Yp) and the end point Q (Xq, Yq). Further, the display control unit 140 obtains the center of a rectangular area connecting the start point (Xp, Yp) of the button A500 and the end point Q (Xq, Yq). Similarly, the display control unit 140 also obtains the center of the rectangular area of the button C520 (FIG. 4).

  FIG. 6 is an explanatory diagram when the display control unit 140 according to the present embodiment draws the guideline 600 from the center of the button A500 to the center of the button C520.

  As shown in FIG. 6, the display control unit 140 connects the center of the button A500 and the center of the button C520, and sets the direction of the line viewed from the button A500 as the movement direction. The display control unit 140 extends lines in the X-axis and Y-axis directions from the center of the button A500, and extends lines in the X-axis and Y-axis directions from the center of the button C520. The display control unit 140 connects points (a) where the X axis and the Y axis intersect, and uses the X axis line and the Y axis line including the point as the guideline 600. Note that there are two intersecting points (a, b) in the coordinates, but the guideline 600 is drawn based on the operation direction in which the user operation is determined to be valid.

  Note that the method of drawing the guideline 600 is not limited to this, and can be arbitrarily set by the user. For example, the guide line 600 may be a curved line instead of a straight line. Note that the present embodiment is limited to formats and standards such as the DVD-Video format because the button area can be calculated if the button position information to which the position information indicating the button position is assigned. It is not something.

  As described above, in this embodiment, the user operation of the button is associated with the movement destination from the position of the button A500 (first button) indicating the current position to the position of the second button that can be selected next by the user. Since it can be displayed on the display screen of the display device 200, the user can select and determine a button indicating a desired item without a sense of incongruity. Therefore, the user can efficiently select a button indicating a desired item.

  Next, a hardware block diagram showing the configuration of the optical disc apparatus 100 according to the present embodiment will be described.

  FIG. 7 is a hardware block diagram showing the configuration of the optical disc apparatus 100 according to the present embodiment.

  As shown in FIG. 7, the optical disc apparatus 100 includes a CPU (Central Processing Unit) 150, a ROM (Read Only Memory) 152, a RAM (Random Access Memory) 154, an operation unit 156, a storage unit 158, an interface unit 160, an internal bus. 162.

  The CPU 150 performs overall control of the optical disc apparatus 100, and loads various programs and various data stored in the ROM 152 into the RAM 154 and expands the programs so that the functions of the various programs can be realized. It has become.

  The RAM 154 is used as a work area (working memory). The ROM 152 stores various programs and various data. Various programs stored in the ROM 152 include programs for realizing the functions shown in the optical disc apparatus 100 of FIG.

  The operation unit 156 has a function of receiving various operations (user operations) from the user and notifying the CPU 150. The operation unit 156 includes, for example, a remote controller that transmits an operation signal for selecting an operation or an item of the optical disc device 100, an operation button for a user to select up / down / left / right directions, and the like.

  The storage unit 158 is a large-capacity nonvolatile storage device, and can store video such as moving images and still images, and can store character information. In the present embodiment, the storage unit is configured by inserting a DVD into a predetermined insertion slot. In addition, the storage unit 158 can be configured by storing video, characters, and the like in a hard disk.

  The interface unit 160 has a function of connecting the optical disc device 100 and the display device 200 and transmitting / receiving data. For example, the CPU 150 reads video and text information from a DVD and transmits the read video and text information to the display device 200, or displays the position information of each button constituting the menu function and the information of the guideline 600. 200.

  The internal bus 162 is connected to the CPU 150 that performs overall control of the optical disc apparatus 100 and is a bus for connecting the components to each other.

  With this configuration, in the present embodiment, the optical disc apparatus 100 has buttons recorded as DVD contents from the DVD constituting the storage unit 158 by the CPU 150 executing the program stored in the ROM 152. The position information is acquired, and an item that can be selected next by the user can be displayed on the display device 200 in association with the user operation of the button and the moving direction.

  Next, the operation of the optical disc display system 300 according to the present embodiment will be described.

  FIG. 8 is a flowchart showing a moving direction display process in which the optical disc apparatus 100 according to the present embodiment displays the moving direction of the button. In FIG. 8, reference numerals with numbers added to S indicate steps in the sequence diagram.

  First, in step S001, when a DVD is inserted into the optical disc apparatus 100, the position information acquisition unit 110 displays position information of the currently selected first button from the button position information recorded in the DVD content. And the position information of the second button associated as the selectable destination from the position of the first button. If the first button is not selected as the initial state, the optical disc apparatus 100 selects the item displayed at the top of the items constituting the menu function as the initial setting.

  In step S003, when the movement direction determination unit 120 moves from the position of the first button to the position of the second button, the movement direction determination unit 120 determines whether the user operation of the button corresponding to the movement direction is valid or invalid. For example, referring to FIG. 2, the movement direction determination unit 120 is a destination that can be selected next from the position information of the button A500 (first button) acquired by the position information acquisition unit 110 and the position of the button A500. Based on the position information of the two buttons, it is determined that the user operation in the downward direction and the user operation in the right direction are valid.

In step S005, the movement direction determination unit 130 determines the first button from the position information of the first button and the position information of the second button with respect to the operation direction determined to be valid by the movement direction determination unit 120. The moving direction from the position to the position of the second button is determined. Referring to FIG. 3, the movement direction determination unit 130 assigns the movement to the button B510 located in the downward direction of the button A500 by the downward operation from the button A500 on the paper surface, and moves rightward from the button A500 on the paper surface. Is assigned to the movement to the button C520 located at the lower right of the button A500, and the moving direction of the button is determined. In addition, since it is determined that the user operations in the upward direction and the left direction as viewed from the button A500 on the page are invalid, the highlight display does not move even if the user operation is performed in the upward direction and the left direction .

  In step S007, the display control unit 140 causes the display device 200 to visually display the movement direction in which the second button determined by the movement direction determination unit 130 is located. Referring to FIG. 4, the display control unit 140 displays a guideline 600 indicating a movement path from the button A500 at the current button position to the button C520 and an icon 610 indicating the direction of the user operation to the movement destination button C520. 200. In addition, the display control unit 140 causes the display device 200 to display an icon 620 indicating the direction of the user operation from the button A500 at the current button position to the button B510 positioned below the button A500.

  As described above, in this embodiment, the optical disc apparatus 100 moves the button from the position of the currently selected button A500 (first button) to the position of the second button that the user can select next. The user operation and the moving direction can be associated with each other and displayed on the display screen of the display device 200.

  Thereby, the user can select and determine a button indicating a desired item on the display screen of the display device 200 without a sense of incongruity, so that the button can be selected efficiently.

  Next, a display example displayed on the display device 200 will be described.

  FIG. 9 is an example of an arbitrary display screen of a DVD displayed on the display device 200 according to the present embodiment.

  As shown in FIG. 9, the main screen and chapters 1, 2, 3, 4 and 5 are shown on the display screen of the display device 200. Here, a chapter is a video scene segmentation in which video segments and certain scenes are segmented in advance.

  In this display example, the user can arbitrarily select a main menu or chapters 1 to 5. Therefore, it is assumed that the user selects chapter 1 using operation unit 156 (FIG. 7).

  FIG. 10 is an example of a display screen when chapter 1 is selected on an arbitrary display screen of a DVD displayed on the display device 200 according to the present embodiment.

  As shown in FIG. 10, on the display screen of the display device 200, the chapter 1 is selected (highlighted) surrounded by a circle, and the main menu or the chapter 1 positioned downward from the chapter 1 is displayed. The fact that the chapter 2 located in the right direction can be selected is displayed using the moving direction.

  Note that chapter 4 is defined in advance so that it cannot be selected after chapter 1, and is displayed with an “x” mark indicating that it cannot be moved from chapter 1. Here, it is assumed that the user has selected chapter 2 by a user operation.

  FIG. 11 is an example of a display screen when chapter 2 is selected on an arbitrary display screen of a DVD displayed on the display device 200 according to the present embodiment.

  As shown in FIG. 11, chapter 2 is selected (highlighted) surrounded by a circle on the display screen of the display device 200, and a chapter that can be selected next by the user from that chapter 2 moves. It is displayed using the direction.

  Specifically, the user can select the chapter 1 located in the left direction of the chapter 2, the chapter 3 located in the right direction of the chapter 2, or the chapter 4 located in the lower left direction of the chapter 2. , Displayed using the moving direction. Next, a case where an icon indicating a user operation direction that can be selected by the user is applied to the chapter 2 will be described.

  FIG. 12 shows a case where an icon indicating the user operation direction that can be selected by the user is applied to the chapter 2 and displayed on an arbitrary display screen of the DVD displayed on the display device 200 according to the present embodiment. It is an example of a display screen.

  As shown in FIG. 12, the display screen of the display device 200 is selected (highlighted) with the chapter 2 surrounded by a circle, and the direction in which the user can operate from the chapter 2 can be selected. It is displayed along with the moving direction (destination).

  Specifically, a left icon 630 indicating that the chapter 1 is selectable, a right icon 640 indicating that the chapter 3 is selectable, and the bottom indicating that the chapter 4 is selectable. A direction icon 650 is displayed in the vicinity of chapter 2. Since there are no selectable chapters in the upward direction, the icon is not displayed (displayed with a broken line).

  Therefore, when the user operation is performed in the downward direction using the arrow icon in the cross direction and the arrow indicating the moving direction ahead of the icon, the chapter 4 is selected, and when the user operation is performed in the right direction, the chapter 3 is selected. When a user operation is performed, chapter 1 can be selected. Further, the user cannot select the chapter 5 and cannot move the highlight display indicating the selection to the chapter 5. As described above, in this embodiment, it is possible to display in a user-friendly manner the chapter movement directions that can be selected by the user operation.

  As described above, according to the present embodiment, the optical disc apparatus 100 moves from the position of the currently selected first button toward the position of the second button associated as the next selectable destination. Since the icons indicating the moving direction and user operation that can be moved can be displayed, the user can efficiently select the button.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  Further, in the embodiment of the present invention, each step of the flowchart shows an example of processing that is performed in time series in the order described. The process to be executed is also included.

100 Optical disk device (optical disk display device)
110 Position information acquisition unit 120 Movement direction determination unit 130 Movement direction determination unit 140 Display control unit 156 Operation unit 158 Storage unit 160 Interface unit 162 Internal bus 200 Display device 300 Optical disc display system 500 Button A
510 Button B
520 Button C
530 Button D
540 Button E
600 Guideline 610 Icon 620 Icon 630 Icon 640 Icon 650 Icon

Claims (6)

Among the button position information recorded in the contents of the optical disc, the position information indicating the position of the currently selected first button and the second associated with the destination that can be selected from the position of the first button. A position information acquisition unit for acquiring position information indicating the position of the button;
A movement direction determination unit that determines whether or not the operation of the button corresponding to the moving direction is valid when moving from the position of the first button to the position of the second button;
Wherein for the operation of the button that has been determined to be valid, while decided as the moving direction can be selected a moving direction from the position of the first button to a position of the second button, it is determined that the not effective For the operation of the button, a movement direction determination unit that determines a movement direction from the position of the first button to the position of the second button as a movement direction that cannot be selected ;
A display control unit that causes the display device to display the movement direction determined as the selectable movement direction ,
The display control unit
For the movement direction that cannot be selected, a display indicating that the movement from the position of the first button to the position of the second button cannot be performed is displayed on the display device.
Optical disk display device. The display control unit
The optical disk display according to claim 1, wherein an icon indicating the operation of the button determined to be valid is arranged in the vicinity of the position of the first button, and the determined moving direction is visually displayed on the display device. apparatus. The display control unit
The optical disc display device according to claim 1, wherein a moving direction from a substantially center of the position of the first button to a substantially center of the position of the second button is visually displayed on the display device. The display control unit
The moving direction from the approximate center of the position of the first button to the approximate center of the position of the second button is visually displayed on the display device using a guideline. Optical disc display device. The button position information includes position information indicating positions of the plurality of second buttons,
The display control unit
The optical disc display device according to any one of claims 1 to 4, wherein a plurality of the determined moving directions are visually displayed on the display device. The optical disc display device according to claim 1, wherein the position of the currently selected first button is highlighted.

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