JP2008158782A - Display device, display method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display to facilitate searching data in a hierarchical structure. <P>SOLUTION: The display has a hierarchical data memory unit which stores data in a hierarchical structure constituted by two or more layers as hierarchical data for each layer, an input section which receives an input of an instruction data to select an item contained in the hierarchical data, and a display control part which reads out, from the hierarchical data memory unit, hierarchical data subordinate to the selected hierarchical data item based on the instruction data inputted from the input section, and displays the read hierarchical data on a position adjacent to the selected hierarchical data. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a display device, a display method, and a program for displaying hierarchical data.

Conventionally, in order to find and refer to a target file, a folder in which the file is stored is displayed, and when the user clicks the folder, the file in the folder is displayed. ing. Here, a folder is provided for each genre and field, a folder name is set, and a file related to the folder name is stored, thereby facilitating file search. When there are a large number of folders, the folders are hierarchically structured and the folders themselves are divided into genres and fields.
For example, a system that displays a hierarchical structure of a file on a display screen and displays data stored in the folder when the item (folder) is clicked has been proposed.
Japanese Patent Laid-Open No. 06-324828

However, in the system shown in Patent Document 1, a folder having a hierarchical structure is displayed by branching into a branch (tree), and when there are a large number of lower-layer folders, a display screen is displayed. In order to display all the folders on the top, a very large display screen is necessary. On the limited display screen, all folders cannot be displayed unless the display size of the folder is reduced. There is a problem.
On the other hand, if the screen branched in a branch shape is scrolled and displayed, if the lower layer structure is displayed sequentially, if there are a large number of folders in one hierarchy, those folders are displayed sequentially. As a result, the parent folder (upper folder) moves to the outside of the screen, and there is a problem that the parent-child relationship of the folder cannot be grasped on one screen.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a display device, a display method, and a program that can easily search hierarchical data.

  In order to solve the above-described problems, the present invention selects a hierarchical data storage unit that stores hierarchical data composed of a plurality of hierarchies as hierarchical data for each hierarchy, and selects any item included in the hierarchical data. An input unit that receives input of instruction data to be read, and, based on the instruction data input from the input unit, reads hierarchical data of a lower layer of the selected hierarchical data item from the hierarchical data storage unit, and reads the read hierarchical data And a display control unit for displaying at a position adjacent to the selected hierarchical data.

  In the display device described above, the display control unit has a function of arranging and displaying items of hierarchical data in a fan shape, and the selected hierarchical data selected by the input unit is selected. The hierarchical data in the lower layer of the hierarchical data is displayed in a fan-like arrangement from the selected item.

  Further, in the display device according to the present invention, the input unit rotates to instruct rotation to the fan-shaped display area in which a part of the periphery of the hierarchical data arranged in the fan shape is selected and input. Based on the rotation instruction data input from the input unit, the display control unit scrolls and displays the hierarchical data of the hierarchy instructed to rotate on the screen based on the rotation instruction data input from the input unit. It is characterized by.

  In the display device described above, the display control unit may start the hierarchical data under the selected hierarchical data with respect to the hierarchical data selected by the input unit. The display is arranged in a fan shape and displayed so that the items of the selected hierarchical data are arranged on a straight line.

  Further, the present invention is a display method in a display device that has a hierarchical data storage unit that stores hierarchical data composed of a plurality of hierarchies as hierarchical data for each hierarchy, and displays the hierarchical data. The input of instruction data for selecting any item included in the hierarchical data is received, and the hierarchical data in the lower layer of the selected hierarchical data item is stored in the hierarchical data storage based on the input instruction data. And reading the read hierarchical data at a position adjacent to the selected hierarchical data.

  Further, the present invention provides means for receiving input of instruction data for selecting any item included in hierarchical data, which is input from an input unit, to a computer, and hierarchically structured data composed of a plurality of hierarchies. Based on the input instruction data, the hierarchical data in the lower layer of the selected hierarchical data item is read out from the hierarchical data storage unit that stores the hierarchical data as the hierarchical data, and the read hierarchical data is adjacent to the selected hierarchical data It is a program for functioning as means for displaying at a position.

  As described above, according to the present invention, based on the instruction data input from the input unit, the hierarchical data below the selected hierarchical data item is read from the hierarchical data storage unit, and the read hierarchical data is selected. It was made to display at the position adjacent to the hierarchical data. As a result, the file can be searched and browsed while explicitly displaying the parent-child relationship (upper and lower) of the hierarchical data. In addition, since the data are displayed at adjacent positions, the hierarchical structure of data can be easily grasped and searched even in a limited display area.

  Also, according to the present invention, based on the rotation instruction data input from the input unit, the hierarchy data of the hierarchy instructed to rotate is scrolled and displayed on the screen. Even when there is a large amount of data, it is possible to refer to the data in the hierarchy using a limited display area.

  Further, the present invention displays the hierarchical data below the selected hierarchical data in a fan-like manner starting from the selected item so that the selected hierarchical data items are arranged on a straight line. Since the data is displayed, even if there is a large amount of data in each hierarchy, the parent-child relationship of the data in each hierarchy can be explicitly displayed using a limited display area.

Hereinafter, a display device according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic block diagram showing a configuration of a display system according to an embodiment of the present invention.
This display system is configured such that the display device 10 and the data editing device 20 can be connected. The display device 10 is, for example, a touch panel, and is provided at a building entrance, facility entrance, conference room, classroom, and the like, and displays various information such as guidance information, presentation data, and educational materials. The data editing device 20 edits various data stored in the display device 10.

  Next, the display device 10 will be further described. The hierarchical data storage unit 11 stores hierarchical data composed of a plurality of hierarchies as hierarchical data for each hierarchy. An example of data stored in the hierarchical data storage unit 11 is shown in FIG. Here, the hierarchical data is a three-layer hierarchical structure, where the first layer is the upper (large item), the second layer is the middle (middle item), and the third layer is the lower (small item). In the third layer, files are associated and stored. As for the items from the first layer to the third layer, and the items and files of the third layer, this correspondence is made as to which item belongs to which item and which file corresponds to which item. Are associated with each other by link information. As this file, an HTML file, a still image, a moving image, a PDF file, a text file, a spreadsheet software data file, a drawing data file, and the like are applicable. As described above, the hierarchy data includes the data of the items for each hierarchy and the information indicating which item of which hierarchy belongs to which item, and which file corresponds to the lowest hierarchy. Information for associating with each other is also included.

  Returning to FIG. 1, the input unit 12 has a function of receiving input of instruction data for selecting any item included in the hierarchical data with respect to various types of information displayed on the display unit 13, and the hierarchical data arranged in a fan shape. It has a function of accepting input of rotation instruction data for instructing rotation to a fan-shaped display area in which a part of the periphery is selected and input. In addition, it has a function of accepting input of operation data for operating an operation button of a player displaying a moving image or the like. For example, a mouse or a touch panel can be applied as the input unit 12.

  The display unit 13 can be a CRT (Cathode Ray Tube), a liquid crystal display device, or the like, and has a function of displaying various types of information. Here, the display unit 13 and the input unit 12 may be configured with a touch panel. In this embodiment, a case where a touch panel is applied will be described.

Based on the instruction data input from the input unit 12, the display control unit 14 reads out the hierarchical data of the lower layer of the selected hierarchical data item from the hierarchical data storage unit 11, and converts the read hierarchical data into the selected hierarchical data. Display in adjacent positions.
Further, the display control unit 14 has a function of arranging and displaying the items of the hierarchical data in a fan shape, and for the hierarchical data selected by the input unit 12, the hierarchical data below the selected hierarchical data is selected. It has a function of displaying items arranged in a fan shape.
In addition, the display control unit 14 has a function of scrolling and displaying the hierarchical data of the hierarchy instructed to rotate on the screen based on the rotation instruction data input from the input unit 12.
The display control unit 14 also displays the hierarchical data selected by the input unit 12 while arranging the hierarchical data in the lower layer of the selected hierarchical data starting from the selected item and displaying it in a fan shape. It has a function of displaying hierarchical data items so that they are arranged on a straight line.
The display device 10 is provided with a speaker as necessary.

  The data editing device 20 can be connected to the outside of the display device 10 via the Internet, a LAN (local area network), a connection cable, or the like, and has a function of editing data stored in the hierarchical data storage unit 11. The input unit 21 is a mouse, a keyboard, or the like, and receives an instruction for data editing from the user. The data editing unit 22 edits data stored in the hierarchical data storage unit 11 based on an instruction from the input unit 21.

  Next, data displayed on the display unit 13 of the display device 10 of FIG. 1 will be described. The display unit 13 displays hierarchical data. First, when a data display instruction is input, for example, as shown in FIG. 2, the highest layer (here, the first layer) Data items are displayed in a fan shape. Here, a part of the circle is displayed as a fan shape on the screen. Here, by operating a rotating wheel or a rotating button arranged along the outer circumference of the fan shape, it is possible to rotate items by moving them upward or downward. When the rotation button is pressed, one item is rotated upward or downward in the direction set for the rotation button. When the user inputs from the input unit 12 so as to trace the rotating wheel, the hierarchical data slides from the upper side to the lower side or from the lower side to the upper side, and each item is moved and displayed. By rotating items of hierarchical data in each hierarchy in this way, items that are not currently displayed on the screen can be displayed on the screen and referred to by the user, and all data belonging to that hierarchy can be displayed. Can be referred to.

When any item is selected and pressed from the hierarchical data of the first layer displayed on the screen, for example, as shown in FIG. 3, lower hierarchical data (second layer) of the pressed item is displayed. The hierarchical data of the second layer is read from the hierarchical data storage unit 11, and the second layer of hierarchical data is arranged and displayed in a fan shape outside the circle of the first layer, starting from the pressed item. Here, the upper hierarchical data is displayed in a fan-shaped shape that is a part of a circle having a radius larger than the radius of the fan-shaped shape that is a part of the circle in which the upper hierarchical data is displayed. Further, when a rotation instruction is input to the hierarchical data of the second layer, and any one of the hierarchical data of the second layer is selected and pressed, for example, as shown in FIG. The third layer hierarchical data belonging to the subordinates of the second layer hierarchical data items is read out, and the third layer hierarchical data is arranged in a fan shape starting from the pressed second layer hierarchical data item. Displayed. Then, when a rotation instruction is input to the third layer hierarchical data and any one of the third layer hierarchical data is selected, it is associated with the item of the third layer hierarchical data (third layer (Stored in the hierarchical data folder) is read out and displayed. As the data displayed here, it is possible to display or output various data such as moving images, still images, sounds, and texts. Here, for example, as shown in FIG. 5 and FIG. 6, when a moving image is output, a player who plays the moving image is displayed, the moving image is played in the display area of the player, and the player's play button It is possible to play, stop, etc. a moving image in response to an operation on a pause button or the like. In this way, it is possible to arrive at the target data.
In addition, about the fan-shaped shape from the 1st layer to the 3rd layer here, when the fan-shaped shape is made into a circle, it arrange | positions so that the circle | round | yen of each hierarchy may become a concentric circle.

Further, depending on the file format of the file, a plurality of still images can be sequentially displayed. For example, as shown in FIG. 7, the player has a next button for transitioning to the next page and a previous button for transitioning to the previous page, and a still image can be displayed according to an instruction to these buttons. It is. If the data to be displayed is one still image, only a close button for closing the still image display is displayed as shown in FIG.
In this way, the displayed data, moving images, and still images are displayed on a display screen using a unified design frame, as shown in FIGS. For this reason, the data to be displayed is easy for the user to see, and operations such as a reproduction operation and page feed are easily made to the display data. In addition, there is a bar on the display screen where items for each layer are displayed so that the hierarchical structure of the displayed data can be seen at a glance.

Next, the operation of the display system in the configuration of FIG. 1 will be described using a flowchart. FIG. 9 is a flowchart for explaining the operation of the display device 10.
First, when the display device 10 is activated, the display control unit 14 reads the items that become hierarchical data and the link information of the file from the hierarchical data storage unit 11 (step S101). The first layer data) is displayed (step S102). Then, it is detected whether or not a document is displayed (step S103). If the document is not displayed, document processing is performed (step S104). On the other hand, when the document is not displayed, it is detected whether or not a large item is displayed (step S105). If a large item is not displayed, the process proceeds to step S107. If a large item is displayed, the process proceeds to a large item process (step S106).

  In step S107, the display control unit 14 detects whether or not the middle item is displayed. If the middle item is displayed, the middle item processing is performed (step S108), and the middle item is not displayed. Detects whether a small item is displayed (step S109). When the small item is displayed, the small item process is performed (step S110). When the small item is not displayed, it is detected whether or not an instruction to end the program is input, and the end instruction is input. If not, the process is terminated. If no termination instruction has been input, the process proceeds to step S103.

Next, large item processing will be described. FIG. 10 is a flowchart for explaining the large item process.
First, after the large item is displayed (step S201), it is detected whether or not the rotation button is pressed (step S202), and if it is pressed, it is detected whether or not the small item is displayed. (Step S203). If the small item is displayed, the small item is hidden (step S204), and the process proceeds to step S205. If the small item is not displayed, the process proceeds to step S205 as it is.

  In step S205, the display control unit 14 detects whether or not the middle item is displayed (step S205). If the middle item is displayed, the middle item is hidden (step S206), and the process proceeds to step S207. If the middle item is not displayed, the process proceeds to step S207. In step S207, the display control unit 14 performs a rotation process for rotating the display of the hierarchical data of the large item according to the content operated by the rotation button, and proceeds to step S201.

  On the other hand, if the rotation button is not pressed in step S202, it is detected whether or not the rotation wheel is operated (step S208). If the rotating wheel is operated, the processing from step S203 to step S206 is performed, and then a large item is rotated according to the operation amount of the rotating wheel (step S207).

  On the other hand, when the operation of the rotating wheel is not performed, it is detected whether or not the item button in the large item has been pressed (step S209). In this case, it is detected whether or not a small item is displayed (step S210). When the small item is displayed, the small item is hidden (step S211), and it is determined whether or not the medium item is displayed (step S212). When the small item is not displayed, The process proceeds to step S212.

  In step S212, the display control unit 14 detects whether or not the middle item is displayed. If the middle item is displayed, the middle item is not displayed (step S213), and the selected large item is displayed. The middle item in the lower layer is displayed (step S214). In step S212, when the middle item is not displayed, the process proceeds to step S214. And it transfers to step S112 of step FIG. 9 (step S215).

Next, middle item processing will be described. FIG. 11 is a flowchart for explaining middle item processing.
When the intermediate item is displayed (step S301), the display control unit 14 detects whether or not the rotation button is pressed (step S302), and when it is pressed, whether or not the small item is displayed. Is detected (step S303). If the small item is displayed, the small item is hidden (step S304), and the process proceeds to step S203. If the small item is not displayed, the process proceeds to step S305 as it is.

  In step S305, the display control unit 14 performs a rotation process of rotating the display of the hierarchical data of the middle item according to the content operated by the rotation button, and proceeds to step S301.

  On the other hand, if the rotation button is not pressed in step S302, it is detected whether or not the rotation wheel is operated (step S306). When the rotating wheel is operated, the processing of step S303 and step 304 is performed, and then the rotation processing of the middle item is performed according to the operation amount of the rotating wheel (step S305).

  On the other hand, when the operation of the rotating wheel is not performed, it is detected whether or not the item button in the middle items is pressed (step S307). In this case, it is detected whether or not a small item is displayed (step S308). When the small item is displayed, the small item is not displayed (step S309), and when the small item is not displayed, the process proceeds to step S310.

  In step S310, the display control unit 14 displays the small items in the lower layer of the selected middle item (step S310). And it transfers to step S113 of step FIG. 9 (step S311).

Next, the small item process will be described. FIG. 12 is a flowchart for explaining the small item processing.
When the small item is displayed (step S401), the display control unit 14 detects whether or not the rotation button is pressed (step S402). If the rotation button is pressed, the display control unit 14 determines according to the content operated by the rotation button. Then, a rotation process for rotating the display of the hierarchical data of the small items is performed (step S403), and the process proceeds to step S401.

  On the other hand, if the rotation button is not pressed in step S402, it is detected whether or not the rotation wheel is operated (step S404). If the rotating wheel is being operated, the small item is rotated according to the amount of operation of the rotating wheel (step S403).

  On the other hand, when the operation of the rotating wheel is not performed, it is detected whether or not the item button in the small items has been pressed (step S307), and if not pressed, the process proceeds to step S402 and is pressed. In that case, the document linked to the selected small item is displayed (step S406).

  Here, the display control unit 14 detects whether or not the document to be displayed is a movie file (step S407), and if it is a movie file, displays a play, stop, pause button on the player. (Step S408) If it is not a movie file, it is detected whether or not the document is a file that can be paged (Step S409). If the document is a file that can be paged, a next button and a previous button are displayed. If the document is not a file that can be paged, the process proceeds to step S114 in FIG. 9 (step S411).

Next, document processing will be described. FIG. 13 is a flowchart for explaining the document processing.
First, after the document is displayed (step S501), it is detected whether or not the play button has been pressed (step S502). If the play button has been pressed, the movie is played (step S503). If the play button is not pressed, it is detected whether or not the pause button is pressed (step S504). If the pause button is pressed, the movie is paused (step S505).
On the other hand, if the pause button is not pressed, it is detected whether or not the stop button is pressed (step S506). If the stop button is pressed, the movie is stopped (step S507). If the stop button is not pressed, it is detected whether or not the next button is pressed (step S508), and if the next button is pressed, the next page of the document is displayed ( Step S509).

  If the next button has not been pressed, it is detected whether the previous button has been pressed. If it has been pressed, the previous page of the document is displayed (step S511), and the previous button is displayed. If is not pressed, it is detected whether or not the document close button is pressed (step S512). If the document close button is not pressed, the process proceeds to step S501. If the document close button is pressed, the document is hidden (step S513), and the process proceeds to step S115 in FIG. 9 (step S514).

Next, the data editing device 20 will be described. FIG. 14 is an example of a data editing screen in the data editing apparatus 20. Folders for large items, medium items, and small items are displayed in a tree structure on the left side of the screen. Only one document can be stored (associated) in the small item folder.
An operation for editing data on such an editing screen will be described with reference to the flowchart of FIG. First, an editor serving as an editing function of the data editing apparatus 20 is activated (step S601), and when a folder generation instruction is input, a large item folder is generated (step S602). Here, the name of the generated folder can be changed. Next, after creating a large item folder according to the required number, one of the created large item folders is selected, and when a folder generation instruction is input, the large item folder is selected. A middle item folder is generated in the lower layer (step S603). Here, the name of the generated middle item folder can be changed. Next, after the required number of medium item folders are created in each large item folder, one of the created medium item folders is selected, and when a folder generation instruction is input, A small item folder is generated below the item folder (step S604). When a file reference instruction is input in the state where the generated small item folder is selected, a list of files that can be registered is displayed, and when a file to be registered is selected, the selected file is selected. The file is displayed in the preview display area. When the registration button is clicked, the selected file is stored in the selected small item folder and registered (step S605). When a file is stored in each of the sub-item folders and a save instruction is input, various data registered in steps S602 to S605 are set and saved in the hierarchical data storage unit 11 and the data is written ( Step S606).

As described above, since the hierarchical data below the selected item is displayed at the adjacent position starting from the selected item, each item is arranged so that each selected item is arranged on a straight line. It is possible to rotate and display the file, thereby searching and browsing the file while explicitly displaying the parent-child relationship (upper and lower) of the hierarchical data. As a result, even within a limited display area, the hierarchical structure of data can be easily grasped and retrieved.
In the above-described embodiment, since the items in each layer are displayed in a fan shape that is a part of a circle, the user is reminded of the image of rotation, and the rotation operation is prompted. As a result, even if it is a simple explanation of the operation method, the operation can be easily performed. In addition, since the circle is rotated, it is possible to design the item selection action to resemble the movement based on the actual physical law of rotation and to be easy to operate with a finger. The operation can be performed intuitively, and items that are not displayed on the screen can be sequentially displayed.

  Since the data editing device 20 edits the data in the hierarchical data storage unit 11, the content provider in the display device 10 can easily edit the hierarchical structure of the items and the association of the presentation file.

In the embodiment described above, the input unit 12 and the display unit 13 are configured by a touch panel. However, a liquid crystal display device is used as the display unit 13 and a mouse is applied as the input unit 12, and an operation input by a mouse operation. Depending on the file display, file display, hierarchical data rotation, and the like may be performed.
In the above-described embodiment, the case where the hierarchical data is displayed in a fan shape has been described. However, according to the amount of operation to rotate, inertia is given to the rotation and the amount of rotation is changed by one operation. Also good. Further, only one item may be rotated by a single operation.
In the above-described embodiment, the case where the hierarchical data is displayed in the shape of a fan divided into circles has been described. However, the hierarchical data may be displayed in an endless shape such as a circle or an ellipse. Instead, it may be displayed in a straight line, and the hierarchical data lower than the selected item may be displayed at an adjacent position starting from the selected item.
In the above-described embodiment, the case where the hierarchical structure has three layers has been described. However, the hierarchical structure may be two layers or four or more layers.

  In addition, a computer-readable recording of a program for realizing the functions of the input unit 12, the display unit 13, and the display control unit 14 in FIG. 1 or a program for realizing the functions of the input unit 21 and the data storage unit 11 is possible. Display processing and data editing processing may be performed by recording the program on the medium, reading the program recorded on the recording medium into a computer system, and executing the program. Here, the “computer system” includes an OS and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory in a computer system serving as a server or a client in that case, and a program that holds a program for a certain period of time are also included. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.

It is a schematic block diagram which shows the structure of the display system by one Embodiment of this invention. 4 is a diagram illustrating an example of data displayed on a display unit 13. 4 is a diagram illustrating an example of data displayed on a display unit 13. 4 is a diagram illustrating an example of data displayed on a display unit 13. 4 is a diagram illustrating an example of data displayed on a display unit 13. 4 is a diagram illustrating an example of data displayed on a display unit 13. 4 is a diagram illustrating an example of data displayed on a display unit 13. 4 is a diagram illustrating an example of data displayed on a display unit 13. 4 is a flowchart for explaining the operation of the display device 10. It is a flowchart for demonstrating a large item process. It is a flowchart for demonstrating a middle item process. It is a flowchart for demonstrating a small item process. It is a flowchart for demonstrating document processing. 3 is an example of a data editing screen in the data editing apparatus 20. It is a flowchart for demonstrating the operation | movement which edits data. 4 is a diagram illustrating an example of data stored in a hierarchical data storage unit 11.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Display apparatus 11 Hierarchical data storage part 12, 21 Input part 13 Display part 14 Display control part 20 Data editing apparatus 22 Data editing part

Claims (6)

A hierarchical data storage unit that stores hierarchical data composed of a plurality of hierarchies as hierarchical data for each hierarchy;
An input unit that accepts input of instruction data for selecting any item included in the hierarchy data;
Based on the instruction data input from the input unit, the hierarchical data below the selected hierarchical data item is read from the hierarchical data storage unit, and the read hierarchical data is displayed at a position adjacent to the selected hierarchical data. A display control unit
A display device comprising: The display control unit has a function of arranging and displaying items of hierarchical data in a fan shape, and for the hierarchical data selected by the input unit, the hierarchical data under the selected hierarchical data is selected. The display device according to claim 1, wherein the display is arranged in a fan shape from the items. The input unit receives input of rotation instruction data for instructing rotation with respect to the fan-shaped display area in which a part of the periphery of the hierarchical data arranged in the fan shape is selected and input,
The display control unit, based on rotation instruction data input from the input unit, scrolls and displays hierarchical data of a hierarchy instructed to rotate on the screen. The display device described. The display control unit displays the hierarchical data selected by the input unit by arranging and displaying hierarchical data below the selected hierarchical data in a fan shape starting from the selected item. The display device according to claim 2, wherein the display is performed such that the items of the hierarchical data are arranged on a straight line. A display method in a display device for displaying hierarchical data, having a hierarchical data storage unit that stores hierarchical data composed of a plurality of hierarchies as hierarchical data for each hierarchy,
Accepts the input of instruction data to select any item included in the hierarchical data input from the input unit,
Based on the input instruction data, the hierarchical data of the lower layer of the selected hierarchical data item is read from the hierarchical data storage unit, and the read hierarchical data is displayed at a position adjacent to the selected hierarchical data.
A display method characterized by that. On the computer,
Means for receiving input of instruction data for selecting any item included in the hierarchical data, which is input from the input unit;
From the hierarchical data storage unit that stores hierarchical data composed of a plurality of hierarchies as hierarchical data for each hierarchy, based on the input instruction data, read the hierarchical data under the selected hierarchical data item, Means for displaying the read hierarchical data at a position adjacent to the selected hierarchical data;
Program to function as.

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