JP7520195B2 - Display device, program and display method - Google Patents

Description

The present invention relates to a display device, etc.

Technology that allows users to add comments to content such as documents has been known for some time. For example, a comment sharing system including a content server that stores and manages electronic content, a plurality of content display devices that are connected to the content server via a network and can download the electronic content, and a comment information management server that stores and manages comment information added to pages of electronic content displayed on the content display devices, in which the content display devices transmit the comment information added to the electronic content to the comment information management server as handwritten data expressed as changes in coordinates over time, and the comment information management server stores the handwritten data, has been disclosed (see Patent Document 1).

JP 2012-190303 A

In recent years, with the spread of paperless systems, we often see multiple users commenting on a single document. However, in the past, the result was that multiple users could simply leave comments on a single document, without taking into consideration visibility, convenience, etc.

In order to solve the above-mentioned problems, the display device of the present invention aims to improve visibility and convenience when a user adds a comment to content such as a document.

In order to solve the above-mentioned problems, the display device of this embodiment is a display device equipped with a storage unit capable of storing a document, a display unit capable of displaying the document, and a control unit, wherein the storage unit associates a position in the document, a user, a comment, and attributes of the comment, and stores them as comment information; and when the document is displayed on the display unit, the control unit reads out the comment information corresponding to the document to be displayed from the storage unit, and superimposes it on the document to display an identification display corresponding to the user at a position included in the comment information.

The display device of the present invention can improve visibility and convenience when a user adds a comment to content such as a document.

FIG. 1 is a diagram for explaining an entire system in a first embodiment. FIG. 1 is a diagram for explaining an overview of a system in a first embodiment. FIG. 2 is a diagram for explaining a functional configuration of the display device according to the first embodiment. 4 is a diagram for explaining document information and comment information in the first embodiment. FIG. FIG. 4 is a diagram for explaining processing in the first embodiment. FIG. 4 is a diagram for explaining an operation example in the first embodiment. FIG. 11 is a diagram for explaining a process in a second embodiment. FIG. 11 is a diagram for explaining an operation example in the second embodiment. FIG. 13 is a diagram for explaining an operation example in the third embodiment. FIG. 13 is a diagram for explaining an operation example in the fourth embodiment.

The following describes embodiments in which the display device of the present invention is applied. Note that each embodiment is described for the convenience of explaining the present invention, and the technical scope of the present invention is not limited to the following embodiments.

[1. First embodiment]
[1.1 Overall configuration]
1 is a schematic diagram showing a system 1 including a display device 10. The system 1 has one or more display devices 10. The display device 10 may be, for example, an information processing device such as a tablet-type terminal device or a notebook computer, or may be a display device such as an electronic whiteboard.

In a first configuration, the system 1 can be configured such that the display device 10 is divided into a first display device (host) used by the administrator and a second display device (client) used by the user.

In other words, the second display device can refer to the documents and comments stored in the first display device, and the documents can be displayed with comments added on each display device. Note that the first display device and the second display device can be any display device, and the display device used by the document manager can be the first display device.

With reference to FIG. 2(a), an overview of the operation of the entire system based on the first configuration of system 1 will be described.

(1) In the display device 10H used by user H, who is an administrator, user H selects a document (F10). At this time, user H may add a comment to the document himself. The comment may be stored as a file (data) separate from the document.

(2) User A reads the document and, if necessary, comments from display device 10H on display device 10A used by user A (F12).

(3) User A performs a process to add a comment to the retrieved document (F14).

(4) The comment added by user A to the document is sent to the display device 10H (F16). The display device 10H updates the comment corresponding to the document based on the received comment, so that the comment added by user A is reflected in the document.

(5) Similarly, users B and C also perform the process of adding comments to the document selected by user H.

In this way, by using this system, each user can add comments to each document. Furthermore, since the display device 10 stores documents and comments in different storage areas (e.g., different files), users can flexibly add comments regardless of the version of the document.

The configuration of system 1 is not limited to the above-mentioned configuration. For example, the following configuration may also be used.

The second configuration of the system 1 is a configuration in which documents and comments are managed in a server device 20. For example, as shown in FIG. 1, a server device 20 with which the display device 10 can communicate is connected to the system 1. The server device 20 may be on the same network or in the cloud. As shown in FIG. 2(b), the display devices 10 are each configured to be able to communicate with the server device 20. That is, data related to documents and comments stored in the display device 10H in the first configuration is stored in the server device 20. The display devices 10 can achieve the same operation as in the first configuration by referring to the server device 20.

In a third configuration, a single display device 10 is used. For example, as shown in FIG. 2(c), if the display device 10 is a large display device used in an interactive whiteboard (IWB) or a table-type display device, it may be possible to realize the configuration with a single display device. In this case, the user who will add a comment may be determined using the input device 15, or by performing a switching operation when inputting. Also, each user may add a comment using a single tablet-type display device.

The following explanation will be given for the third configuration, which is realized using one display device. As described above, by determining the user who added the comment, a person skilled in the art can apply this to the first and second configurations as well.

[1.2 Functional configuration]
Next, the functional configuration of the display device 10 will be described. The display device 10 shown in Fig. 3 is intended to explain the configuration of the display device 10 when used by the above-mentioned administrator. Each component is sufficient as long as it is necessary for operation, and is not a required component.

The control unit 100 is a functional unit for controlling the entire display device 10. The control unit 100 realizes various functions by reading and executing various programs stored in the storage unit 150, and is composed of one or more arithmetic units (e.g., CPUs (Central Processing Units)).

The control unit 100 also operates as a comment processing unit 102 and a display setting unit 104 by executing a program.

The comment processing unit 102 executes editing processes such as inputting, changing, and deleting comments in response to operations input by the user. The comment processing unit 102 adds necessary information to the comment input by the user and stores it in the comment information 154 of the storage unit 150. In addition, if comment information is stored in another display device 10 or the server device 20, the comment processing unit 102 may send and receive comments to and from other devices via the communication unit 160.

The comment processing unit 102 can process text input by the user as a comment, and can process handwritten images (image data) input by the user as a comment. For example, the comment processing unit 102 accepts input of text comments when the user inputs from a software keyboard or a hardware keyboard. The comment processing unit 102 also accepts input of handwritten image comments when the handwritten image is drawn using a touch panel or an operation pen. The comment processing unit 102 may also accept input by switching between text comments and handwritten image comments using a touch button or operation.

Furthermore, the comment processing unit 102 may convert the handwritten image into text by performing character recognition, or may convert the text into an image. In this embodiment, the user can add a comment without being aware of whether it is text input or handwritten input.

Furthermore, the comment processor 102 may process images such as stamps as comments added by the user. The comment processor 102 may also input other files by attaching them to the comments.

The comment processing unit 102 can also perform other common editing operations, such as inserting, deleting, modifying, replacing, and moving, as well as known editing operations such as changing the character type, moving the cursor, changing the font, changing the line color and thickness, and transforming the line.

The display setting unit 104 performs settings for the control unit 100 to filter the comments to be displayed based on the extraction target. In this embodiment, the setting is made to display comments from all users, but it is also possible to set, for example, to display only comments from a specific user as the extraction target.

The display unit 110 displays documents and comments, as well as various states of the display device 10 and the state of operational input. For example, it may be configured with a liquid crystal display (LCD), an organic EL panel, or electronic paper that uses electrophoresis.

The input unit 120 accepts operational input from the user. For example, it is configured with a capacitive or pressure-sensitive touch panel. The input unit 120 may be a combination of a touch panel and an operation pen, or may be an input device such as a keyboard or a mouse. In addition, the input unit 120 may be any device that allows the user to input information, such as being combined with a microphone to input voice information.

The input unit 120 also outputs the position where the user performed an input operation as the input position to the control unit 100. The input position is preferably the coordinates on the display screen displayed on the display unit 110, for example, as a position detected on a touch panel. Alternatively, the input position may be the position of the cursor (the row or column position in a sentence) or the layout information (for example, on a button or on a scroll bar).

The storage unit 150 is a functional unit that stores various programs and various data necessary for the operation of the display device 10. The storage unit 150 is configured, for example, with a semiconductor memory such as an SSD (Solid State Drive) or an HDD (Hard Disk Drive). The storage unit 150 also stores document information 152, comment information 154, and user information 156.

Document information 152 stores documents and information about the documents. For example, as shown in FIG. 4(a), document information 152 includes the following information:

Document ID: Information for identifying a document.
Document: Information about a document. For example, a text file, an image file, a portable document format (PDF) file, an office file, etc. As these documents, actual data may be stored, or the location where the data is stored (for example, a folder location, a uniform resource locator (URL)) may be stored. Furthermore, a document may be composed of one or more pages.

Owner: Information about the owner. The owner is usually an administrator, but may be someone else. The owner may be included as information about the document described above.
-Ver: The version of the document.
Comment ID list: A list of comment IDs, which includes comment IDs corresponding to comments added to the document.

Comment information 154 stores comments added by users to documents and information related to those comments. For example, as shown in FIG. 4(b), comment information 154 includes the following information:

Comment ID: Information for identifying a comment.
Document ID: Information for identifying the document corresponding to the comment.
Page number: Information on the page number in the document to which the comment is added. Note that if the document is a single page, there is no need to store this information.

Position: Information about the position where the comment is added in the document. This is the position within the document or the page of the document, and is indicated by, for example, coordinates (X and Y coordinates). If the document is text data or other sentence data, it may be indicated by rows and columns.
Author: Information about the author of the comment.

Attributes: Comment attributes. These indicate the attributes of the comment, such as the status of the business flow, such as "Approved," "Rejected," "Pending," or "Resolved," or the contents, such as "Favorite," "Memo," or "Check later."

- Reference ID: Information for identifying the comment (parent comment) that the comment refers to. When a user adds comments hierarchically, the parent comment ID is stored to identify the parent comment. Note that related comments, such as parent and child comments, are referred to as a comment group.

- Content (comment): Information indicating the content of the comment actually entered (added) by the user. For example, the content may include the text data of the entered comment, image data when entered by hand, and data related to attached files. The type of comment (text/image, etc.) is also identified based on the comment content. The comment type may simply indicate "text," "image," or "file," or may indicate the presence of a text comment and an attached file, such as "text + file." In this embodiment, the comment type is identified based on the content, but information indicating the comment type may also be stored, for example.

User information 156 stores information about users. For example, information for identifying a user may store a login ID, password, name, terminal used, biometric information of the user, ID of the input pen used, etc. for each user. User information 156 also stores an icon associated with each user. Each user can log in to the system (for example, display device 10 or display device 10 operating as a host (server)) based on user information 156.

The communication unit 160 communicates with other devices. For example, it connects to a LAN (Local Area Network) to send and receive information about comments and documents with other devices. The communication method may be a LAN, which is a common Ethernet (registered trademark), or LTE/4G/5G communications.

It should be noted that the display device 10 only needs to have the functions of each of the above-mentioned configurations as necessary. For example, in the case of a display device 10 used by a user who is not an administrator (a general user) or in the case of storing each data in the server device 20, the document information 152 and the comment information 154 do not need to be stored in the storage unit 150.

The configuration shown in FIG. 3 needs to include at least the control unit 100 and the memory unit 150, and needs to be capable of implementing the operations of this embodiment. Some functions may be implemented by an external device. For example, the display unit 110 may be configured as an external device such as a display. In other words, the display device 10 may be configured with a display device and a terminal device, and the control unit 100 and the memory unit 150 need only be provided in the terminal device.

[1.3 Processing flow]
The main process flow of this embodiment will be described with reference to the flow of Fig. 5. After the document is displayed on the display unit 110, the control unit 100 executes the process of Fig. 5.

If a comment corresponding to the document displayed on the display unit 110 is already stored in the comment information 154, the control unit 100 displays an icon corresponding to the comment (step S102).

Specifically, the control unit 100 extracts a comment ID corresponding to the currently displayed document and/or page of the document. Then, based on the comment ID, the control unit 100 reads out the position where the comment was added from the comment information 154. Then, the control unit 100 displays an icon at the read-out position. As a result, the icon is displayed superimposed on the document.

The icon here refers to a shape, symbol, or character used to identify a user. It is sufficient if the user can visually recognize the icon and identify the user who added the comment.

When the control unit 100 detects that a comment adding operation has been performed (step S104; Yes), it executes the process of adding a comment (steps S106 to S116).

Specifically, the control unit 100 acquires the position (input position) where the user performed an operation to add a comment (step S106). Examples of the operation to add a comment include the following operations.

(1) A touch operation that lasts for a specified period of time or longer is detected on the document. The position where the touch operation occurred becomes the input position.

(2) Detect an unusual operation (such as a double tap) on the document. The position where the unusual operation occurred becomes the input position.

(3) A position is selected on the document, and a specific comment addition operation (e.g., a comment addition operation is performed from a menu) is detected. The position selected on the document becomes the input position.

The control unit 100 determines whether the input position of the operation to add a comment is the position where the comment is displayed (comment position) (step S108). If the input position of the operation to add a comment is the comment position, the control unit 100 determines that it is a reply operation to an existing comment, and displays a comment reply field for the comment that has already been added (step S108; Yes → S110). The comment reply field is an input field for replying to a comment. For example, the control unit 100 displays an input field (comment reply field) for the user to input a comment below the comment that is the source of the reply.

Here, the determination that the comment addition operation was performed at the comment position is made by determining whether the position is, for example, as follows:

(1) When the input position is on or near an icon.
(2) When the input position is on a comment that is already being displayed, a reply displayed together with a comment, or in the vicinity of a comment.

In addition, if the control unit 100 determines that the input position for the operation to add a comment is not at the comment position, it displays a new comment section (step S108; No -> step S112).

The control unit 100 (comment processing unit 102) executes comment processing in the comment field or comment reply field (step S114). When the user inputs a comment and the input operation is completed, the comment processing unit 102 stores the input comment together with related information in the comment information 154.

Here, the user can input a comment in the comment field or comment reply field. The comment to be input can be text (e.g., a character string) or a graphic (e.g., a handwritten image). The user can also attach a file (e.g., a text file, an image file, a slide, an audio file, etc.) to the comment field or comment reply field. The control unit 100 stores the input comment or the attached file in the comment information 154.

When the user finishes inputting the comment, the control unit 100 displays an icon corresponding to the user who input the comment at the input position (step S116). Specifically, the control unit 100 identifies an icon corresponding to the user who input the comment from the user information 156 and displays it. Note that when a user inputs a comment in the comment reply field, the control unit 100 may display the icon near the icon corresponding to the parent comment.

The control unit 100 also determines whether an icon has been selected (step S116). If an icon has been selected, the control unit 100 executes a process to switch between displaying and hiding the comment corresponding to the icon (step S116; Yes -> step S118).

That is, when only an icon is displayed and an icon is selected by the user (for example, when the icon is touched), the control unit 100 displays a comment corresponding to the icon near the icon.

The method by which the control unit 100 displays the comments includes a method of displaying only the comments, and a method of displaying the comments together with a comment field that includes an input field, operation buttons, etc.

When displaying a comment, the control unit 100 may also display a parent comment (comment from which the reply originates) if there is one. Conversely, when displaying a comment, the control unit 100 may also display a child comment (comment to which the reply originates) if there is one. The control unit 100 may also display parent comments and child comments hierarchically. Furthermore, the control unit 100 may also display reply comments (grandchild comments) to child comments hierarchically.

If the user performs an operation to edit the comment (step S120; Yes), the comment processor 102 executes comment processing to edit the comment (step S122).

For example, the comment processor 102 edits comments in response to the following operations.
(1) When comments are displayed, the user selects one of the comments that he or she has added, and the comment processor 102 executes an editing process on the comment selected by the user.

(2) When parent comments/child comments are displayed, the user selects one of the comments that he or she added. The comment processing unit 102 performs editing processing on the comment selected by the user.

(3) If no comments are displayed, the user selects an icon. The comment processing unit 102 displays the comment corresponding to the icon selected by the user and also performs editing processing.

To identify a comment from an icon, the control unit 100 identifies a comment ID from the currently displayed document, the page of the document, the position of the selected icon, and the user corresponding to the icon. The control unit 100 (comment processing unit 102) then displays the comment corresponding to the comment ID and executes processing to edit the comment.

Furthermore, if the user performs an operation to add an attribute to the comment, the control unit 100 executes a process to add the attribute to the comment (step S124; Yes -> S126). For example, when the user performs a predetermined operation on the comment (for example, a tap operation, a swipe operation, a menu operation), the control unit 100 adds the attribute. At this time, the control unit 100 may separately display a menu for adding the attribute to the comment. The menu for adding the attribute may display, for example, an icon for each attribute to allow the user to select, or a radio box or a selection list.

[1.4 Operation example]
An example of the operation of this embodiment will be described with reference to Fig. 6. Fig. 6(a) is a diagram showing an example of a display screen W100 on which a document is displayed.

The display device 10 displays multiple icons based on comment information superimposed on the document. For example, an icon M100 indicating that a comment has been added by user A, an icon M102 indicating that a comment has been added by user B, and an icon M104 indicating that a comment has been added by user C are displayed. The shape, color, text, image, and size of the icons may vary for each user.

When the user selects an icon, a comment corresponding to the icon or a comment field containing comments is displayed near the selected icon. For example, when the user displays icon M100, comment C100 is displayed near icon M100. This comment C100 may be displayed, for example, in the form of a speech bubble from icon M100, or may be displayed in a position adjacent to icon M100, or may be displayed at a predetermined distance (for example, 10 pixels) away.

Comments can also be displayed in reply format. FIG. 6(b) shows a comment field C110 in which multiple comments are displayed in reply format. The comment field C110 is displayed when the user selects icon M110 or icon M112.

In the comment field C110, two comments are displayed hierarchically in the parent comment/child comment format. User A's comment is the parent comment (the comment to which the reply is sent), but this parent comment is displayed as text. User B's comment is the child comment (the comment to which the reply is sent), but this child comment is displayed as a handwritten image.

In other words, when entering a comment in the comment field, the user can enter either text or a handwritten image. In this way, according to this embodiment, the user can enter a comment without distinguishing between text input and handwritten input.

In other words, users can enter and display comments using the same operations regardless of the comment's attributes.

The display device of this embodiment also displays icons corresponding to users at the positions on the document where comments are made. Therefore, users can easily understand which users have added comments by simply visually checking the icons.

When an icon superimposed on the document is selected, the display device switches between displaying and hiding the comments. This allows the user to display and check the comments with a simple operation. Furthermore, when the user does not need to check the comments, the user can hide the comments. This allows the user to achieve both visibility of the document and the comments.

The display device can also display related comments together in a comment section as a series of comment displays. This allows users to add comments in the form of replies to other comments. Also, users can easily check related comments in a single comment section.

Fig. 6(c) is a diagram showing an example of a display screen W120 displaying a menu for selecting attributes of a comment. For example, the control unit 100 displays a menu for allowing the user to select attributes near the comment by touching (tapping) the comment. The control unit 100 may also display a button for displaying the comment within the comment, and display a menu for allowing the user to select attributes when the button is selected. For example, in the region R120 in Fig. 6(c), the following options are displayed with identifiable icons: "Check later", "Favorites", "Memo", "Pending", "Resolved (Approved)", and "Rejected".

[2. Second embodiment]
[2.1 Processing flow]
The second embodiment is an embodiment in which comments can be displayed separately in a list. In addition to the first embodiment, this embodiment executes the comment list display process of FIG. 7. Note that when the control unit 100 executes the comment list display of FIG. 7, the document is already displayed on the display unit 110. Furthermore, the control unit 100 may superimpose an icon corresponding to a comment added to the displayed document on the document. Only the points of this embodiment that are different from the first embodiment will be described below.

First, when a user performs an operation to display a comment list, the control unit 100 displays a comment list area that is an area for displaying a list of comments (step S202). The comment list display area may be secured in a partial area of the display screen, for example.

Next, the control unit 100 displays a selection display used when filtering (extracting) and displaying comments (step S204). For example, the selection display may display an icon corresponding to the user who added the comment in a part of the comment list area, or an icon corresponding to the attributes of the comment. In other words, the selection display identifies and displays (as an icon display, text display, or menu display) the users, attributes, etc. to be extracted.

The items that can be selected for extraction here include, for example, the comment attributes, the comment creator, the comment type, and the date and time range when the comment was added.

Next, the control unit 100 displays a list of comments in the comment list area (step S206). At this time, the control unit 100 displays the following comments as the comments to be displayed in the list:

(1) All comments contained in the document are displayed. When a comment is selected, the control unit 100 may switch the document to a position where the icon of the selected comment is displayed. Specifically, when an icon is selected by the user, the control unit 100 updates and displays the page and display range of the document based on the selected icon.

(2) Display all comments included in the page of the displayed document. When a document has multiple pages, the control unit 100 displays a list of all comments added to one displayed page. In this case, the document displayed on the display screen corresponds to the comments displayed in the list. For example, when the page of the document is changed, the control unit 100 also updates the list display of the displayed comments.

(3) Displays comments included in the document in the displayed range. When a portion of a document is displayed, the control unit 100 displays comments corresponding to icons included in the position of the display range. In this case, even if many comments are added to a document, it is possible to narrow down the displayed comments by changing the display range of the document.

In either case, the control unit 100 may superimpose an icon on the document and also display a list of comments. Alternatively, the control unit 100 may not initially display an icon on the document, and when a comment is selected by the user, superimpose the icon on the document. Alternatively, when multiple comments are selected by the user, the control unit 100 may superimpose only the icon corresponding to the selected comment.

Next, when one or more users are selected from the users displayed in the selection display (step 208; Yes), the control unit 100 displays only the selected comments to be extracted (step S210). At this time, the control unit 100 updates the icon display so that only the icons of the selected icons to be extracted are superimposed on the document (step S212).

In addition, in step S210, when one or more extraction targets are selected, the control unit 100 may hide only the comments of the selected extraction targets. In this case, the selected identification display (e.g., an icon) or comments of the extraction targets corresponding to the menu (e.g., the user who created the comment, or the attributes of the comment) will be excluded from the display.

Here, as long as no operation is performed to end the list display, the process is repeated from step S208 (step S214; No → step S208).

On the other hand, if an operation to end the list display is performed (step S214; Yes), the comment list area is released (step S216). In other words, the comment list area is no longer displayed, and the screen transitions to the normal document display.

[2.2 Operation example]
8A and 8B are examples of display screens for explaining the operation of this embodiment. In a display screen W200 in Fig. 8A, icons corresponding to comments added by a user are superimposed on a document.

Here, if the user performs an operation to display a list of comments, the control unit 100 switches from the display screen W200 to the display screen W210 of FIG. 8(b).

On the display screen W210, an area R210 for displaying a list of comments is secured at the right edge of the display screen W210. The area R210 for displaying the list of comments may be located at any of the four edges of the screen. In addition, the area for displaying the list of comments does not have to be located at the edge of the screen, and may be displayed, for example, in a window format, superimposed on the document.

Here, area R210 displays a list of comments included in the document. For example, a comment from user B is displayed as comment C210. In area R212 above the comment list display, icons of the comment creators (users) are displayed as selectable icons as an example of extraction targets. Here, in FIG. 8(b), the display of users A to C is enabled as extraction targets, so the comments of users A to C and their icons are displayed on the document.

The comment list display may also be displayed so that parent/child comments can be confirmed. For example, comment C214 is stored as the reply destination comment for comment C212. Therefore, comment C214 is displayed so as to hang from comment C212 (displayed so as to be nested). This allows the user to easily understand that comment C214 is a reply to comment C212.

Here, when the user selects the icon of user B from the user selection display, the control unit 100 filters and displays the comments of user B.

Figure 8 (c) is an example of a display screen W220 in which comments from user B alone are displayed in a filtered manner. Only the icon M220 representing user B is displayed, and the icons for users A and C are not visible.

As a result, the control unit 100 displays only the comments of user B in the comment list display. The control unit 100 may also display only the icon of user B as an icon superimposed on the document.

When a user is selected, related comments may be displayed in addition to the comments of that user. For example, comment C214 is a comment related to comment C212 (such related comments are referred to as a "comment group"). When the user selected as the extraction target is included in a comment group, each comment group may be displayed instead of just the comment.

Note that, although the extraction target is explained using an icon indicating the user who created the comment as an example, other extraction targets are also conceivable. For example, if the comment attribute is the extraction target, selecting "approval" will display a comment or a group of comments with the "approval" attribute.

In this way, according to this embodiment, the display device can display a list of comments added to a document. Furthermore, when an icon corresponding to an extraction target is selected, the display device will filter and display the comments. This allows the user to check comments according to the user who is a specific extraction target, the attributes and status of the comment, etc., or to display comments excluding a specific extraction target.

[3. Third embodiment]
In addition to the first and second embodiments, the third embodiment is an embodiment in which the display setting unit 104 sets the comments to be displayed. Note that this embodiment will be described with respect to a case in which the display screen differs for each user. For example, in the case of one display device, the display screen differs depending on the user who logs in during use. Also, in the case of multiple display devices, the display screen differs for each user who logs in to the display device being used.

The display setting unit 104 can be a process that can be executed only by the administrator (owner), for example. This allows the administrator to set the users for whom comments are to be displayed. This embodiment is applicable to the above-mentioned embodiment, and the differences from the above-mentioned embodiment will be described below.

First, the user performs an operation to execute the comment hide setting process (Fig. 9(a)). This causes the display setting unit 104 to execute the process and display a screen for selecting the extraction target for which the comment will be hidden (Fig. 9(b)). Note that the comment hide setting process is preferably executed by, for example, an administrator, the document owner, a teacher, or a meeting organizer. Below, a case where an administrator user executes the comment hide setting process will be described. Also, the creator of the comment (user) will be described as an example of the extraction target.

Here, the administrator user sets the comment of user C to be hidden (Figure 9 (c)). As a result, the comment of user C is hidden from other users.

Display screen W300 in FIG. 9(d) is a diagram showing an example of a display screen for a user other than user C. User C's icon is hidden from the document. Therefore, other users cannot display user C's comments.

Display screen W310 in FIG. 9(e) is a diagram showing an example of a display screen for user C. Since the comment is user C's own, icons are displayed in this case, and the comment can be confirmed. Note that the administrator's display screen may display the icons of all users, regardless of the display/non-display restrictions, like the display screen in FIG. 9(e).

In addition, multiple users may be selected for which comments are to be hidden. For example, if comments A through D have been added by users, the administrator (user H) has set the comments of users A and C to be hidden. In this case, the users whose comments are displayed to each user are as follows:

User A: A, B, D User B: B, D
User C: B, C, D User D: B, D
User H: A, B, C, D

In this way, the display device can switch the comments to be displayed depending on the user using the display device. For example, when requesting reviews of a document from multiple users, this display device (system) makes it possible to switch and display comments for each user.

In addition, if an administrator selects comment attributes to be extracted, other users will only be able to see comments with the selected attributes. For example, by allowing an administrator to select attributes to be extracted, this system can display only "unapproved" comments on each terminal, or only "pending" comments on other terminals. This system can also display comments other than "rejected" as a comment attribute.

[4. Fourth embodiment]
In addition to the first and second embodiments, the fourth embodiment is an embodiment in which the display setting unit 104 sets comments to be hidden and extraction targets (e.g., users) to be allowed to be displayed. Note that this embodiment will be described with respect to a case in which the display screen differs for each user. For example, in the case of one display device, the display screen differs depending on the user who logs in during use. Also, in the case of multiple display devices, the display screen differs for each user who logs in to the display device being used.

The display setting unit 104 can be a process that can be executed only by the administrator (owner), for example. This allows the administrator to set the extraction targets (users) for which comments are to be displayed. This embodiment is applicable to the above-mentioned embodiment, and the differences from the above-mentioned embodiment will be described below.

The display setting unit 104 executes processing and displays a setting screen in response to an operation by the administrator user (FIG. 10(a)). Here, the administrator sets users (e.g., users A to E) as extraction targets for which comments are to be hidden. In other words, the only user whose comments are to be displayed is H.

The display screen W400 in FIG. 10(b) is an example of a display screen W400 for each user. The only icon corresponding to the user's comments displayed in the document is the icon corresponding to user H. Note that at this time, an icon corresponding to one's own comments may also be displayed.

This means that, for example, when multiple users add comments to a single document, the comments of other users are not displayed, making it possible to add comments without being influenced by the comments (opinions) of other users.

In addition, users who add comments can add comments without worrying about other users, since the comments will not be visible to other users.

Furthermore, the administrator user may select users who are permitted to display. In FIG. 10(c), user B is selected as the user who is permitted to display.

Display screen W410 in FIG. 10(d) is an example of a display screen for user B. The icons of all users are superimposed on the document. Note that the icons of all users may also be superimposed on the display screen of an administrator user.

The display device of this embodiment makes it possible to operate the device in such a way that, for example, only the comments of the general user are displayed, while all comments are displayed to specific users (such as managers or decision makers who are not administrators).

5. Modifications
The present invention is not limited to the above-described embodiments, and various modifications are possible. In other words, the technical scope of the present invention also includes embodiments obtained by combining technical means that are appropriately modified within the scope of the gist of the present invention.

Furthermore, each function may be configured as a program, or may be configured as hardware. If the function is realized as a program, it may be recorded on a recording medium and the program may be read out and executed from the recording medium, or it may be stored on a network and downloaded and executed.

In the above-described embodiment, the touch detection unit is a touch panel, and touch operations (tap operations) are used as examples. However, operations may also be performed by clicking operations, etc., using an external input device such as a mouse.

In addition, according to the above-mentioned embodiment, the display device is described as including a display control device, but it may be a separate device. For example, a computer may be connected as a display control device to a display device having a touch panel. In this case, for example, by connecting the display device and the computer via USB, the input coordinates on the touch panel can be acquired by the computer. Also, by outputting to the display device via HDMI (registered trademark) or the like, sticky note objects and the like can be displayed. Furthermore, these control signals and the display control signal may be connected by a single signal line.

In the above embodiment, the display device is described as having a display unit and an operation input unit, but it goes without saying that other methods may be used to implement the invention disclosed in this embodiment. For example, a projector may be used as the display unit 110, and a human presence sensor may be used as the input unit 120. A display system may be realized by connecting a control computer to the input unit 120 and the display unit 110.

Although the above-mentioned embodiments are described separately for ease of explanation, they may of course be combined to the extent technically possible.

In this way, the embodiments described in this specification can be combined and implemented to the extent that there are no contradictions.

In addition, in the embodiments, the programs that run on each device are programs that control the CPU and the like (programs that make the computer function) so as to realize the functions of the above-described embodiments. Information handled by these devices is temporarily stored in a temporary storage device (e.g., RAM) during processing, and is then stored in various ROM, HDD, and SSD storage devices, and is read, modified, and written by the CPU as necessary.

When distributing the program on the market, the program can be stored on a portable recording medium and distributed, or transferred to a server computer connected via a network such as the Internet. In this case, the storage device of the server computer is of course included in the present invention.

Also, this can be achieved by installing and executing an application with each function on various devices such as a smartphone, tablet, or image forming device.

REFERENCE SIGNS LIST 1 System 10 Display device 100 Control unit 102 Comment processing unit 104 Display setting unit 110 Display unit 120 Input unit 150 Storage unit 152 Document information 154 Comment information 160 Communication unit

Claims (7)

A display device including a storage unit capable of storing a document, a display unit capable of displaying the document, and a control unit,
The storage unit is
storing a position in the document, a user, and a comment in association with each other as comment information;
The control unit is
displaying the document in a first area of the display unit and a comment associated with the document in a second area of the display unit;
In the first region,
When displaying the document, an identification indicator corresponding to the user is displayed at a position included in the comment information so as to be superimposed on the document;
When the identification mark is selected, a comment corresponding to the identification mark is switched between being displayed near the identification mark and being hidden.
Displaying in a third area identification indications of the plurality of users who added the comments;
When one of the identification indicators in the third area is selected, only the comments of the user corresponding to the selected identification indicator are displayed in a list in a fourth area. The comments stored in the storage unit include a parent comment and a child comment,
The display device according to claim 1 , wherein when the comment displayed in the second area is a parent comment and there is a child comment corresponding to the parent comment, the control unit displays the child comment so as to be suspended from the parent comment. The display device according to claim 2 , wherein the control unit displays, in the first area, an identification indication corresponding to the parent comment and an identification indication corresponding to the child comment adjacent to each other. The display device according to claim 1, wherein the control unit, when displaying a comment in the second area, further displays a comment related to the displayed comment. The control unit is
Among the identification displays, only the identification displays corresponding to the users permitted to be displayed by the administrator are displayed;
The display device according to claim 1 , wherein, when the identification display is an identification display of a user who uses the display device, the identification display is displayed regardless of the administrator's permission to display the identification display. A program executed on a computer having a storage unit capable of storing a document and a display unit capable of displaying the document,
a function of storing in the storage unit a position in the document, a user, and a comment in association with each other as comment information;
displaying the document in a first area of the display unit and a comment associated with the document in a second area of the display unit;
A program for achieving the above,
In the first region,
When displaying the document, an identification indicator corresponding to the user is displayed at a position included in the comment information so as to be superimposed on the document;
When the identification mark is selected, a comment corresponding to the identification mark is switched between being displayed near the identification mark and being hidden.
Displaying in a third area identification indications of the plurality of users who added the comments;
A program for realizing that, when one of the identification indications in the third area is selected, only the comments of the user corresponding to the selected identification indication are displayed in a list in the fourth area. A display method for a display device including a storage unit capable of storing a document, a display unit capable of displaying the document, and a control unit, comprising:
the storage unit stores a position in the document, a user, and a comment in association with each other as comment information;
displaying the document in a first area of the display and a comment associated with the document in a second area of the display;
displaying, in the first area, an identification indicator corresponding to the user at a position included in the comment information, superimposed on the document when the document is displayed;
a step of switching between displaying and not displaying a comment corresponding to the identification indication when the identification indication is selected, in the vicinity of the identification indication;
displaying in a third area identification indications of the plurality of users who added the comments in the second area;
When one of the identification indications in the third area is selected, only the comments of the user corresponding to the selected identification indication are displayed in a list in the fourth area.

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