JP7365935B2 - display device - Google Patents

Description

The present invention relates to a display device.

In recent years, personal computers and tablets that support touch and pen input have become popular, and various technologies related to handwritten input have been proposed.

For example, generating one or more handwritten word blocks when the plurality of handwritten strokes are text input, positioning them according to a first predetermined layout criterion, and generating a sketch content object when the plurality of handwritten strokes are sketches. , a technique has been proposed that responds to receiving a plurality of handwritten strokes in an input area by positioning them according to a second predetermined layout criterion that is different from a first predetermined layout criterion (see Patent Document 1).

Furthermore, a technique has been proposed in which image data is deleted by inputting a predetermined command (gesture) to the image data that was input immediately before (see Patent Document 2).

Special table 2018-530042 publication Japanese Patent Application Publication No. 6-309093

Reviews by others are essential for improving content such as document files, and the use of applications that allow users to enter comments on content is also increasing. However, with the technology disclosed in Patent Document 1 and Patent Document 2, even if the user wants to add a comment to a predetermined area in the content, there is a simple method that allows the user to add a comment to a predetermined area of the content. It was not possible to know the area of content that was created.

In order to solve the above-mentioned problems, it is an object of the present invention to provide a display device that specifies an area and stores the content of the area as a comment.

A first embodiment for solving the above-mentioned problems includes a display unit that displays content (for example, the display unit 110 in FIG. 2), an input unit (for example, the input unit 120 in FIG. 2), and a storage unit ( For example, in a display device including a storage unit 150 in FIG. 2) and a control unit (for example, control unit 100 in FIG. 2),
The storage unit is capable of storing characters or images as comments in association with the content,
The control unit includes:
identifying an area input by the input unit among the content displayed on the display unit;
storing a first image based on the content of the identified area as a comment;
This is a display device characterized by the following.

The second embodiment includes a display unit that displays content (for example, the display unit 110 in FIG. 2), an input unit (for example, the input unit 120 in FIG. 2), and a storage unit (for example, the storage unit 150 in FIG. 2). ) and a control unit (for example, the control unit 100 in FIG. 2),
The storage unit is capable of storing characters or images as comments in association with the content,
The control unit includes:
displaying an input area for inputting a first image on the display unit superimposed on the content;
identifying an area including a range where the input area is superimposed;
storing a first image input into the input area and a second image based on the content of the identified area as a comment;
This is a display device characterized by the following.

According to the display device of the present invention, it is possible to specify an area and store the content of the area as a comment.

FIG. 1 is a diagram for explaining an overview of a system in a first embodiment. FIG. 2 is a diagram for explaining the functional configuration of a display device in the first embodiment. FIG. 3 is a diagram for explaining content information, handwritten figure information, and comment information in the first embodiment. FIG. 3 is a diagram for explaining comment storage processing in the first embodiment. FIG. 3 is a diagram for explaining an example of operation in the first embodiment. FIG. 3 is a diagram for explaining an example of operation in the first embodiment. FIG. 7 is a diagram for explaining comment storage/addition processing in the second embodiment. FIG. 7 is a diagram for explaining an example of operation in the second embodiment. FIG. 7 is a diagram for explaining comment storage processing in a third embodiment. FIG. 7 is a diagram for explaining an example of operation in a third embodiment. It is a figure for explaining comment storage processing in a 4th embodiment. FIG. 7 is a diagram for explaining file attachment processing in the fifth embodiment. It is a figure for explaining the example of operation in a 5th embodiment. FIG. 7 is a diagram for explaining display switching processing in a sixth embodiment. It is a figure for explaining the example of operation in a 6th embodiment.

Hereinafter, embodiments in which the display device of the present invention is applied will be described. Note that each embodiment is described for 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]
FIG. 1A is a diagram showing the appearance of the display device 10. As shown in FIG. The display device 10 may be, for example, an information processing device such as a tablet terminal device or a notebook computer, or a large display device such as the one used in an electronic whiteboard or an interactive whiteboard (IWB). , or a table type display device. A user's operation on the display device 10 is input by, for example, detecting a touch on a touch panel or detecting an operation using the input device 15.

In this system, content and comments are stored in the display device 10. The display device 10 can add comments to content and display the content by referring to the stored content and comments.

In this embodiment, the display device 10 will be described as a single device, but it may also have a configuration including a plurality of display devices or a configuration in which a display device and a server cooperate.

For example, as shown in FIG. 1(b), the system may be configured to include a display device 10H used by a user who is an administrator, and a plurality of display devices used by other users. An overview of the operation of the entire system will be explained below.

(1) On the display device 10H used by the user H who is the administrator, the user H selects content (F10). At this time, user H may add a comment to the content himself/herself. Comments may be stored as a file (data) separate from the content.

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

(3) User A executes a process of adding a comment to the read content (F14).

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

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

In this way, by using this system, each user can add a comment to the content.

Further, the display device may be a system connectable to a server device. For example, as shown in FIG. 1C, a server device 20 with which the display device 10 can communicate is connected to the system. The server device 20 may be in the same network or in the cloud. As shown in FIG. 1(c), the display devices 10 are configured to be able to communicate with the server device 20, respectively. That is, data related to content and comments stored in the display device 10H in the configuration of FIG. 1(b) is stored in the server device 20. The display device 10H, the display device 10A, and the display device 10B can realize the same operation as the configuration described above by referring to the server device 20, respectively.

Note that although the following description will be made regarding the case where the display device is implemented with one display device, those skilled in the art can also apply it to the second configuration and the third configuration.

[1.2 Functional configuration]
Next, the functional configuration of the display device 10 will be described with reference to FIG. 2. Each configuration is sufficient if it includes what is necessary for operation, and is not an essential configuration.

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 (for example, a CPU (Central Processing Unit)). .

Further, the control unit 100 operates as a comment processing unit 102, a UI (User Interface) processing unit 104, and a user authentication unit 106 by executing programs.

The comment processing unit 102 executes editing processing 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 156 of the storage unit 150. Further, if comment information is stored in another display device 10 or server device 20, the comment processing unit 102 may transmit and receive comments to and from the other device via the communication unit 160.

The comment processing unit 102 processes an object input by a user as a comment input for the content. Objects input by the user include, for example, figures, text (characters), and symbols.

In this embodiment, the content is content displayed on the display unit 110 of the display device 10, and is, for example, an image or a document. Further, a document refers to data created using word processing software, spreadsheet software, presentation software, or data in PDF (Portable Document Format) format.

Furthermore, in this embodiment, a comment is information input by a user in order to associate content, and corresponds to the information of the user who inputted the content or the information of the content displayed when the content was input. Refers to something that can be attached. The information input by the user as a comment may be information to be communicated to other users, such as annotations or suggestions regarding the content, or may be private information, such as a memorandum.

Regarding object input, for example, the comment processing unit 102 accepts a text comment input from a user using a software keyboard or a hardware keyboard. Furthermore, when a figure is drawn with a touch panel or a figure is drawn with an operation pen, the comment processing unit 102 receives input of a comment for the input figure. In the following description, a figure input by a touch operation on a touch panel or an operation using an operation pen will be referred to as a handwritten figure. Handwritten figures include, for example, figures constituting characters and symbols, and figures such as points, lines, arrows, and rectangles. Further, the comment processing unit 102 may receive input by switching between a text comment and a graphic comment using a touch button or an operation.

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

Furthermore, the comment processing unit 102 may process an image such as a stamp as a comment added by the user.

Note that the comment processing unit 102 performs other general editing processing, such as operations such as inserting, deleting, changing, replacing, and moving, changing the character type, moving the cursor, changing the font, and changing the color and thickness of the line. Known editing processes such as modification and line deformation can be performed.

The UI processing unit 104 generates a user interface screen and displays it on the display unit 110. In this embodiment, the UI processing unit 104 performs a process of displaying content, information regarding comments, and a list of comments on the display unit 110. For example, as shown in FIG. 5(a), content is displayed on the entire display screen W100, and comments are vertically arranged and displayed in a list in the area R100. Comments may be arranged in chronological order or may be displayed for each user. For example, a user icon is displayed in area R102 in FIG. 5(a). When a user icon is selected by the user, the UI processing unit 104 reads a comment corresponding to the selected user from the comment information 156 and displays it. The UI processing unit 104 may display the list of comments superimposed on the content, or may divide the display area of the display unit 110 and display the list of comments in an area different from the area where the content is displayed. It's okay. Furthermore, the UI processing unit 104 may be able to switch between displaying and hiding a list of comments.

User authentication section 106 authenticates the user. Specifically, the user authentication unit 106 refers to the user information 158 to authenticate a user who adds a comment or authenticates the owner (user) of the content, for example. Note that the user authentication unit 106 may use an external authentication server. When an authentication server is used, the user authentication unit 106 and user information 158 may be stored in the authentication server.

The display unit 110 displays content and comments, various states of the display device 10, and the state of operation input. For example, it is configured with a liquid crystal display (LCD), an organic EL panel, electronic paper using an electrophoresis method, or the like.

The input unit 120 receives operation 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 used as long as the user can input information, such as performing voice input in combination with a microphone or the like.

Further, the input unit 120 detects a position where an input operation is performed by the user, and outputs the detected position to the control unit 100 as an input position. The input position is preferably, for example, a coordinate on a display screen displayed on the display unit 110 as a position detected on a touch panel. In addition to this, the position may also be the position of the cursor (row or column position in the text) or information on the layout in which it is placed (for example, on a button or on a scroll bar).

The storage unit 150 is a functional unit in which various programs and various data necessary for the operation of the display device 10 are stored. The storage unit 150 includes, for example, a semiconductor memory such as an SSD (Solid State Drive) or an HDD (Hard Disk Drive). The storage unit 150 also stores content information 152, handwritten graphic information 154, comment information 156, and user information 158.

The content information 152 stores content and information regarding the content. The content information 152 includes the following information, for example, as shown in FIG. 3(a).

- Content ID: Information for identifying content.
- Content: Information regarding the content. The contents include, for example, text files, image files, PDF (Portable Document Format) files, office files, and the like. As these contents, actual data may be stored, or the location where the data is stored (eg, folder location, URL (uniform resource locator)) may be stored. Furthermore, the content may be composed of one or more pages.
-Comment ID list: List of comment IDs. A comment ID corresponding to a comment added to the content is included.

The handwritten figure information 154 stores information regarding handwritten figures input to the content. A handwritten figure input to the content refers to a handwritten figure that is directly input to the content by the user performing a touch operation or operation with an operating pen, etc. on the area where the content is displayed. .

The handwritten figure information 154 includes the following information, for example, as shown in FIG. 3(b).
- Content ID: Information for identifying content.
-Position: The position associated with the area where the handwritten figure is input. This is the content or the position of the content within the page, and is indicated by, for example, coordinates (XY coordinates).
-Creator: Information about the user who input the handwritten figure.
・Handwritten figure information: Information indicating a handwritten figure.

The position stored in the handwritten figure information 154 is a position inside or around the area containing the handwritten figure. Further, the handwritten figure information stored in the handwritten figure information 154 may be stored as a raster format image, or may be stored as a vector format image.

The comment information 156 stores comments added to content by the user and information regarding the content. The comment information 156 includes the following information, for example, as shown in FIG. 3(c).

-Comment ID: Information for identifying a comment.
- Content ID: Information for identifying the content corresponding to the comment.
・Position: Information about the position where the comment is added in the content. This is the content or the position of the content within the page, and is indicated by, for example, coordinates (XY coordinates). Furthermore, if the content is text data such as text data, it may be represented by rows and columns.
- Author: Information about the author of the comment.
- Reference ID: Information for identifying the comment (parent comment) referred to by the comment. When a user adds comments hierarchically, the parent comment ID is stored in order to identify the parent comment. Note that related comments such as parent and child comments are expressed as a comment group.
-Comment: Information indicating the content of the comment actually input (added) by the user. The contents include, for example, text data, image data, data regarding attached files, and the like.

Note that a plurality of comments may be stored. For example, image data and text data may be stored as comments, or a plurality of image data may be stored. Furthermore, when a plurality of pieces of data are stored as comments, the order in which they are stored (the order in which they are input) may be maintained. For example, an image input first (first image) and an image input second (second image) may be stored as comments while maintaining their order. In this case, the comment processing unit 102 may treat the second image as a comment added to the first image (information associated with the first image).

User information 158 stores information regarding users. For example, as information for identifying users, the login ID, password, name, terminal used, biometric information of the user, ID of the input pen used, etc. for each user may be stored. Further, the user information 158 stores icons associated with each user.

The communication unit 160 communicates with other devices. For example, it connects to a LAN (Local Area Network) and sends and receives information regarding comments and documents to and from other devices. As the communication method, in addition to the general Ethernet (registered trademark) LAN, communication such as LTE/4G/5G may be used.

Note that each of the above-described configurations may be provided as long as the display device 10 has functions as required. For example, if each data is stored in the display device 10 or server device 20 used by a user who is not an administrator (general user), the content information 152 and comment information 156 do not need to be stored in the storage unit 150. Further, various information may be stored in a server on the cloud as necessary.

The configuration shown in FIG. 2 only needs to include at least the control section 100 and the storage section 150, and only needs to include something that can realize the operation in this embodiment. Further, some functions may be realized by an external device. For example, the display unit 110 may be configured as an external device such as a display. That is, the display device 10 may be composed of a display device and a terminal device, and the control section 100 and the storage section 150 may be provided in the terminal device.

[1.3 Process flow]
The flow of comment storage processing in this embodiment will be explained with reference to FIG. 4. The control unit 100 executes the comment storage process shown in FIG. 4 when the UI processing unit 104 generates a user interface screen for displaying content and comments and displays it on the display unit 110. Later.

First, the control unit 100 displays a menu on the display unit 110 (step S102). The control unit 100 displays a menu when a gesture such as a long press or a double tap, or an operation to select an icon or button for displaying a menu is input via the input unit 120.

The menu displayed in step S102 displays one or more items indicating processes that can be executed by the control unit 100. The user can execute a predetermined process by selecting one item from the menu. In this embodiment, among the items included in the menu displayed in step S102, there is a process to obtain a part of the content as an image and output the obtained image (target image) as a comment. Includes "Image Cutout".

The control unit 100 determines whether "image cutting out" is selected from the menu (step S104). Here, if "image cutting out" is not selected from the menu but an item indicating another process is selected, the control unit 100 executes the selected process (step S104; No→step S106).

On the other hand, if "image cutting" is selected from the menu, the control unit 100 specifies the content area based on the operation input via the input unit 120 (step S104; Yes → step S108). .

For example, the control unit 100 can receive an input of a drag operation by a touch operation, an operation pen operation, or a mouse operation from the user via the input unit 120, and can specify an area by the accepted drag operation. A screen is displayed on the display unit 110. When the user performs a drag operation, the control unit 100 identifies the area based on the drag operation from the content displayed on the display unit 110.

The area specified by the control unit 100 may be a rectangular area or a circular area, or may be a free-form area with the position where the drag operation is performed as the boundary of the area.

Subsequently, the control unit 100 determines whether to determine the area of the specified content (step S110). For example, when the control unit 100 detects that a drag operation such as a drop operation has ended, the control unit 100 displays a menu on the display unit 110 that allows the user to select whether or not to determine an area. If the user selects to determine the area, the control unit 100 determines to determine the area of the specified content.

Note that when the control unit 100 detects that the drag operation has ended, the control unit 100 may directly determine the area of the specified content without displaying a menu or the like. Further, the control unit 100 determines the area of the specified content if the user does not input an operation within a predetermined period of time (for example, 3 seconds) after detecting that the drag operation has ended. It's okay.

Note that if the content area has not been determined, the control unit 100 returns to step S108 (step S110; No→step S108).

Subsequently, when the content area is determined in step S110, the control unit 100 acquires an image based on the content of the specified area and stores it as a comment (step S110; Yes→step S112).

In order to obtain an image based on the content, the control unit 100 generates an image to be stored as a comment from the content displayed on the display unit 110. For example, the control unit 100 acquires an image based on the content by capturing (cutting out) the area determined in step S110. Note that if an object (for example, a handwritten figure input directly to the content) is included in the area to be captured, the control unit 100 may obtain an image in which an image based on the content and the object are superimposed. good.

Further, the control unit 100 generates comment information including the acquired image as a comment, the content ID, comment ID, position, and creator of the content displayed on the display unit 110, and generates comment information. 156. By doing so, the image based on the content based on the area selected by the user is stored as a comment.

Note that the control unit 100 may store the comment ID as the comment information 156 as a serial number, as a character string generated according to a predetermined rule, or as a random character string.

Furthermore, the control unit 100 stores the position as the comment information 156, for example, the position where a gesture such as a long press or a double tap is input when displaying the menu in step S102. Note that the control unit 100 may set the position to be stored as the comment information 156 as the position where the drag operation ends, may allow the user to select the position, or may determine the position to be stored as the comment information 156 based on the area to be captured. The position determined based on the area to be captured may be, for example, the center of the area to be captured, or if the area to be captured is a rectangular area, the position determined based on the area to be captured may be any of the four corners of the rectangular area. good.

Further, the control unit 100 may allow the user to select the creator to be stored as the comment information 156 before displaying the menu in step S102, or may allow the user to select the creator to be stored as the comment information 156 in advance when the user inputs the content area in step S108. The identification may be based on the operating pen used.

Next, the control unit 100 (UI processing unit 104) reads the comment information 156 and places a user icon on the display section at the position where the comment is added as an identification display indicating the user (creator) who added the comment. 110 (step S114). Here, the user icon is one of the identification displays for identifying the user (creator) who added the comment, and refers to a figure, symbol, character, or image for identifying the user who added the comment. The identification display may be any display that can identify the user who added the comment.

Further, the control unit 100 (UI processing unit 104) performs a process of displaying a list of comments on the display unit 110 (step S116). Note that if the vertical or horizontal length of the image of a portion of the content stored as a comment is large, the control unit 100 (UI processing unit 104) reduces and displays the image of the portion of the content. It's okay.

In this way, by storing an image of a part of the content as a comment, the user can view the comments displayed in a list on the display unit 110, including images based on the content of the area to be added as a comment. It can be grasped by Further, the user can edit comments or delete comments by causing the comment processing unit 102 to execute editing processing.

[1.4 Operation example]
An example of the operation of this embodiment will be described with reference to FIGS. 5 and 6. First, the display screen W100, which is the user interface generated by the UI processing unit 104, will be described with reference to FIG. 5(a). On the display screen W100, content is displayed in the entire displayable area of the display unit 110, and comments are displayed in a list in the area R100 at the right end of the screen. Note that the region R100 may be located at any position above, below, left, or right of the screen edge. Moreover, the region R100 does not have to be located at the edge of the screen, but may be displayed in a window format overlapping the content, for example.

In area R100, comments added to the content are displayed in a list. For example, user A's comment is displayed as comment C100, and user B's comment is displayed as comment C102. Further, on the display screen W100, user icons are displayed at positions where comments have been added, as shown by the user icons U100 and U102.

Note that when comments are displayed in a list, parent comments/child comments may be displayed so that they can be confirmed. For example, comment C102, which is a child comment of comment C100, may be displayed so as to hang from comment C100, which is a parent comment (displayed so as to be nested).

Next, a display screen displayed on display section 110 when comment storage processing is executed by control section 100 will be described. First, in step S102 of the comment storage process, when the process of displaying a menu is executed, the display screen W110 shown in FIG. 5(b) is displayed on the display unit 110. A menu M110 is displayed on the display screen W110. The menu M110 includes "image cutting" as an item. Note that among the items displayed in the menu M110, items that cannot be selected by the user may be grayed out.

When "Image Cutout" is selected from the menu displayed on the display screen W110, the display screen displayed on the display unit 110 transitions from the display screen W110 to the display screen W120 shown in FIG. 5(c). As shown in FIG. 5C, the display screen W120 displays the entire content as if it were covered with a blackout curtain, and the content is displayed darkly.

At this time, the display screen W130 that is displayed when the user performs the operation is shown in FIG. 6(a). For example, when the user inputs a drag operation using the operating pen P130, the area specified by the display device 10 based on the drag operation is displayed brightly, as shown in area R130 in FIG. 6(a). Good too. By doing so, the display device 10 can allow the user to confirm the content area to be stored as a comment.

When the display device 10 detects that the drag operation has ended on the display screen W130, the display screen displayed on the display unit 110 transitions from the display screen W130 to the display screen W140 shown in FIG. 6(b). do. A menu M140 is displayed on the display screen W140. The menu M140 includes, as items, "OK" for determining the area specified based on the operation input by the user, and "Cancel" for reselecting the area. At this time, if the user selects "Cancel" from the menu M140, the display screen displayed on the display unit 110 transitions from the display screen W140 to the display screen W120 shown in FIG. 5(c). Note that the display screen W130 shown in FIG. 6A may be displayed, and an operation for changing the specified area (for example, a brightly displayed area like the area R130) may be accepted.

On the other hand, when the user selects "OK" from the menu M140, the display screen displayed on the display unit 110 transitions from the display screen W140 to the display screen W150 shown in FIG. 6(c). The display screen W150 is a display screen when an image based on the content of the area specified based on the user's operation (region R130 in FIG. 6A) is newly stored as a comment.

For example, as an image of content based on area 130 in FIG. 6(a), which is an area specified based on a user's operation, an image of content in a rectangular area shown in area R140 in FIG. 6(b) is captured, and a comment is is stored as. As a result, an image that captures the range of area R140 is newly stored as a comment as a part of the image of the content. For example, in area R150 where comments are displayed in a list, comments are displayed as shown in comment C150. The newly stored comment (image of the content in area R140) is displayed in the list. Further, a user icon U150 is displayed at the position where the comment C150 is added.

According to this embodiment, the display device specifies a content area based on input from the user, acquires the content based on the specified area, and stores it as a comment. Therefore, by selecting a content area, the user can store content based on the selected area as a comment.

[2. Second embodiment]
Next, a second embodiment will be described. The second embodiment is an embodiment in which a comment can be added to an image based on content stored as a comment.

[2.1 Process flow]
In this embodiment, the control unit 100 executes the comment storage/addition process shown in FIG. 7 . The control unit 100 executes the comment storage/addition process shown in FIG. after it has been done.

First, the control unit 100 executes the comment storage process described in the first embodiment (step S202). Thereby, the control unit 100 stores the content based on the area specified based on the user's operation as a comment. Further, the control unit 100 (UI processing unit 104) causes the display unit 110 to display a user icon based on the comment stored by the comment storage process.

Subsequently, the control unit 100 displays a comment box on the display unit 110 (step S204). The comment box is an area that is displayed superimposed on the content displayed on the display unit 110, and is an area (input area) that accepts the input of a comment (object) based on a touch operation or an operation using an operating pen. In this embodiment, the comment box displayed in step S204 will be described as being displayed for inputting a comment for the comment stored in step S202.

Subsequently, the control unit 100 determines whether the comment box has been touched with the operating pen (step S206). If the comment box is touched with the operating pen, the control unit 100 accepts input of a comment (handwritten figure) using the operating pen (step S206; Yes→step S208). This allows the user to input a comment (handwritten figure) into the comment box.

Subsequently, the control unit 100 determines whether or not the area outside the comment box has been touched (step S210). If the area outside the comment box is not touched, input of a comment using the operation pen is continuously accepted (step S210; No→step S208).

If the outside of the comment box is touched, the control unit 100 stores the comment input in the comment box as an additional comment for the comment (image based on the content) stored in step S202 (step S210; Yes→ Step S216).

For example, when receiving a comment input using the operating pen in step S208, the control unit 100 sets the comment (an image of a portion of the content) stored in step S202 as the first image, and sets the comment (handwritten) based on the input using the operating pen as the first image. Comment information 156 is stored in which the image of the figure (figure) is used as the second image. Thereby, the control unit 100 can store the image of the comment input into the comment box using the operation pen as a comment for the image based on the content.

If it is not determined in step S206 that the comment box has been touched by the operation pen, the control unit 100 accepts input of a text comment (step S206; No→step S212). For example, the user inputs text into the comment box using a keyboard or the like.

Subsequently, the control unit 100 determines whether or not the area outside the comment box has been touched (step S214). If the area outside the comment box is not touched, input of a text comment is subsequently accepted (step S214; No→step S212).

If the outside of the comment box is touched, the control unit 100 stores the comment input in the comment box as a comment for the comment (image based on the content) stored in step S202 (step S214; Yes→step S216). ). For example, the control unit 100 adds and stores the text input in step S212 to the comment of the comment information 156 stored in step S202. Thereby, the control unit 100 can store the text comment input in the comment box as an additional comment for the image based on the content.

Subsequently, the control unit 100 (UI processing unit 104) displays a list of comments on the display unit 110 (step S218). As a result, the image based on the content stored in step S202 and the comment input in the comment box are displayed as a group on the display unit 110.

[2.2 Operation example]
An example of the operation of this embodiment will be described with reference to FIG. 8. FIG. 8A is a diagram showing a display screen W200 displayed on the display unit 110 when the process of displaying a comment box is executed. A user icon U200 and a comment box E200 are displayed on the display screen W200. Further, a comment to be added may be indicated by displaying a line or the like connecting the user icon U200 and the comment box E200.

FIG. 8B is a diagram showing a display screen W210 displayed on the display unit 110 when a comment (handwritten figure) is input into the comment box E210 using the operating pen P210. By doing so, the user can input a comment on the image based on the content based on the area selected by, for example, a touch operation or an operation using an operation pen, via the comment box E210.

FIG. 8C is a diagram showing a display screen W220 displayed on the display unit 110 when an area outside the comment box is touched. By touching outside the comment box, the comment entered in the comment box is confirmed. Further, in the comment C220 displayed on the display screen W220, an image C222 of a portion of the content stored as a comment and an image C224 of the comment input into the comment box are displayed. By looking at the comment C220, the user can confirm for which part of the content the comment input by the user is input.

According to this embodiment, the display device can accept input of a comment on an image of a portion of content stored as a comment, and store the input comment as a comment on an image of a portion of content. As a result, images of a part of the content and comments on the images of part of the content are displayed as a list, so the user can understand the content of the comment on the content and the content of the content to which the comment has been added. I can do it.

[3. Third embodiment]
Next, a third embodiment will be described. The third embodiment, unlike the second embodiment, is an embodiment in which an object input is first received, and then a content area to be stored as a comment is selected. This embodiment is particularly an embodiment in which the first comment to be accepted is a handwritten figure directly input to the content. In this embodiment, FIG. 4 of the first embodiment is replaced with FIG. 9. Note that the same functional units and processes are denoted by the same reference numerals, and description thereof will be omitted.

[3.1 Process flow]
In this embodiment, the control unit 100 executes the comment storage process shown in FIG. 9. The control unit 100 executes the comment storage process shown in FIG. 9 when the UI processing unit 104 generates a user interface screen for displaying content and comments and displays it on the display unit 110. Later.

First, the control unit 100 receives an input of a handwritten figure for the content (step S302). For example, when the control unit 100 detects a touch down on the input unit 120 (touch panel) or when it detects an input using an operation pen on the input unit 120, the control unit 100 transitions to a handwritten comment input state (mode) and inputs a handwritten figure. Accept input. The handwritten comment input state (mode) is a state (mode) in which handwritten figures can be directly input to the displayed content. When the control unit 100 executes the handwritten figure input process, it outputs the handwritten figure based on the trajectory of the input to the touch panel. Control unit 100 may temporarily output the handwritten figure to storage unit 150 until the input is completed, or may output it to handwritten figure information 154.

Subsequently, the control unit 100 determines whether input of the handwritten figure is completed (step S304). Examples of this include the following cases.

(1) When a predetermined period of time has elapsed since a touch-up When a predetermined period of time has elapsed since the input unit 120 (for example, a touch panel) detects a touch-up with respect to a touch input by a user, the control unit 100 Determine that input is complete. The predetermined time may be set in advance or may be set by the user. The predetermined time is preferably about 100 milliseconds to 3 seconds, more preferably about 1 second. As a result, even if touch-down and touch-up are detected multiple times due to continuous input of a plurality of handwritten figures, control unit 100 detects touch-down and touch-up again before the predetermined time elapses. If the down state is detected, input of handwritten figures can be continued.

(2) When an operation other than the operation in inputting handwritten figures is detected Operations in inputting handwritten figures include, for example, touching the touch panel and moving the touched position, or moving the operation pen while touching it (drag). operation). Here, when an operation other than a normal handwritten figure input operation (for example, a double tap, a long press, etc.) is detected, the control unit 100 determines that the handwritten figure input has ended.

(3) When an operation indicating that the input of a handwritten figure is finished When the user performs an operation that indicates that the input of a handwritten figure is finished, the control unit 100 determines that the input of the handwritten figure is finished. For example, the control unit 100 causes the display unit 110 to display a button such as “end input”, and when the button is selected by the user, determines that the input of the handwritten figure has ended.

Note that if the input of the handwritten figure is not completed, the control unit 100 returns to step S302 to continue accepting the input of the handwritten figure (step S304; No → step S302).

If it is determined that the input of the handwritten figure has been completed, the control unit 100 displays the input handwritten figure in the handwritten figure information 154 together with the content ID, creator, and position information of the content displayed on the display unit 110. (Step S304; Yes→Step S306).

Here, the control unit 100 stores the handwritten figure information 154 at a predetermined position on the boundary line of the area including the handwritten figure input for the content (in the case of a rectangular area, any of the four corners). ). Note that the control unit 100 may store the position in the handwritten figure information 154 as the center of the area including the handwritten figure, or may set the position where input of the handwritten figure is started or a position around it.

Further, the control unit 100 may allow the user to select the user to be stored as the creator in advance before executing step S302, or may specify the user based on the operation pen used when inputting the handwritten figure. It's okay.

After storing the handwritten graphic information, the control unit 100 displays a menu on the display unit 110 (step S102). Similar to the first embodiment, the menu includes "image cutting" as an item. In addition, items other than "image cutting" include, for example, an item that stores only handwritten figures as comments without acquiring images based on the content, and an item that does not store handwritten figures as comments but simply leaves handwritten figures on the content. Items may be included.

Subsequently, the control unit 100 specifies the content area based on the operation input via the input unit 120 by executing the processes of steps S104 to S110.

Subsequently, the control unit 100 stores the image of the handwritten figure input in step S302 and the image based on the content acquired based on the area determined in step S110 as a comment (step S308).

For example, the control unit 100 may write a comment in which the first image is an image based on the content acquired based on the area determined in step S110, and the second image is the image of the handwritten figure that was input in step S302. It is stored as comment information 156. Note that the location and creator stored as the comment information 156 may be the same as the location and creator stored in step S306. Note that the comment ID stored as the comment information 156 may be one generated by a predetermined method.

[3.2 Operation example]
An example of the operation of this embodiment will be described with reference to FIG. FIG. 10A is a diagram showing a display screen W300 displayed on the display unit 110 when a handwritten figure is input for the content. For example, a line L300 forming a character is input by the user as a handwritten figure and displayed on the display unit 110.

When the input of handwritten figures for the content is completed and "image cutting" is selected from the menu, the display screen displayed on the display unit 110 changes from the display screen W300 to the display screen W310 shown in FIG. 10(b). do. FIG. 10(b) is a screen similar to the display screen W120 shown in FIG. 5(c) of the first embodiment, and when the user inputs a drag operation using the operating pen P310, This is a screen that brightly displays the area identified based on the image.

When the content area is determined, the display screen displayed on the display unit 110 transitions from the display screen W310 to the display screen W320 shown in FIG. 10(c). In the comment C320 displayed on the display screen W320, an image C322 of a portion of the content stored as a comment and an image C324 of a handwritten figure input for the content are displayed. By looking at the comment C320, the user can confirm to which part of the content the handwritten graphic comment input by the user is input.

Further, a user icon U320 is displayed at the lower right corner of the rectangular area E320 that includes the handwritten figure. By looking at the user icon U320, the user can identify the user ("C" in the example of FIG. 10(c)) who has input the handwritten figure (handwritten comment) input around the user icon U320. .

According to this embodiment, after receiving an input of a handwritten figure for the content, the display device acquires an image of a portion of the content, and stores the image of the handwritten figure and the image of the portion of the content as a comment. Therefore, the user can efficiently input handwritten comments and select content areas.

[4. Fourth embodiment]
Next, a fourth embodiment will be described. The fourth embodiment is an embodiment in which an image based on the content that is the background of a comment box is automatically acquired and stored as a comment.

In this embodiment, the control unit 100 executes the comment storage process shown in FIG. 11. The control unit 100 executes the comment storage process shown in FIG. 11 when the UI processing unit 104 generates a user interface screen for displaying content and comments and displays it on the display unit 110. Later.

First, when a touch operation is performed on the content displayed on the display unit 110 via the input unit 120, the control unit 100 displays a user icon at the position where the touch operation was performed (step S402 → step S404). ). Note that in step S402, the control unit 100 may determine that a touch operation has been performed when a single touch is detected, or may determine that a touch operation has been performed when a gesture such as a long press or double tap is detected. It's okay. This allows the user to specify a location to add a comment.

Subsequently, the control unit 100 displays a comment box (step S406). For example, the control unit 100 sets the comment box to be displayed around the user icon displayed in step S404.

Subsequently, when the comment box is touched with the operating pen, the control unit 100 accepts input of a comment (handwritten figure) using the operating pen (step S408; Yes→step S410).

Subsequently, the control unit 100 determines whether input of a comment (handwritten figure) using the operation pen is completed (step S412). Note that to determine whether or not input of a comment (handwritten figure) using the operation pen is completed, the control unit 100 may perform the same process as step S304 of the comment storage process described in the third embodiment.

Note that if the input of the comment (handwritten figure) using the operation pen is not completed, the control unit 100 returns to step S410 to continue accepting the input of the comment using the operation pen (step S412; No→Step S410).

On the other hand, if it is not determined in step S408 that the comment box has been touched with the operating pen, the control unit 100 accepts input of a text comment (step S408; No→step S414). Subsequently, the control unit 100 determines whether the user icon displayed in step S402 has been touched (step S416).

If the input of a comment (handwritten figure) using the operation pen is completed (step S412; Yes), or if the user icon displayed in step S402 is touched (step S416; Yes), the control unit 100 displays the menu. Display (step S418). In this embodiment, the menu items displayed in step S418 include "Comment" and "Image Cutout".

Subsequently, the control unit 100 determines whether "comment" has been selected from the menu displayed in step S418 (step S420).

If commenting is selected, the content (object) input in the comment box is stored as a comment along with the content ID, comment ID, creator, and position information (step S420; Yes→step S422). Specifically, the control unit 100 stores the content (object) input in the comment box as a comment as comment information 156 along with information on the content ID, comment ID, creator, and location. The information on the content ID, comment ID, creator, and location is the same information as the information stored in step S112 of the comment storage process in the first embodiment.

Subsequently, the control unit 100 (UI processing unit 104) displays the comments in a list (step S424). Note that if "comment" is selected from the menu, the image based on the content is not stored as a comment, so the comment displayed in step S424 includes only the content (object) entered in the comment box. .

On the other hand, in step S420, if "comment" is not selected, the control unit 100 determines whether "image cutting" is selected (step S420; No→step S426).

When "image cutting out" is selected (step S426; Yes), the control unit 100 acquires an image based on the content of the area that is the background of the comment box. Then, the control unit 100 stores the content input into the comment box and the image based on the content as a comment (step S428).

Here, a method of acquiring an image based on the content of the area that is the background of the comment box will be described. In order to obtain an image based on the content, for example, the control unit 100 specifies an area in which a comment box is superimposed, regards the specified area as an area for obtaining an image based on the content, and applies the content to the content in the area. Get an image based on.

Note that the control unit 100 may expand the area for acquiring images based on the content using a predetermined method. For example, the control unit 100 measures the distance between characters or images included in the area overlaid with the comment box and other adjacent characters or images, and expands the area until the distance becomes wider than a predetermined value. You may let them. Note that the characters searched by the display device 10 may be text (characters) of an object, characters composed of handwritten figures, or text (characters) included in an image based on content. There may be. Furthermore, the control unit 100 may expand the area to include a group image including images (clumps) adjacent to the images included in the area.

Note that the control unit 100 determines the distance between an object included in the area for acquiring an image based on the content and an object outside the area, and determines whether or not to expand the area for acquiring the image based on the content based on the distance. You may. In addition, if it is not possible to determine whether or not to expand the area based only on the spacing between objects, the control unit 100 performs character recognition, meaning recognition, and graphic recognition to create an image based on the content to the extent that the text can be understood. The area for acquiring the data may be expanded.

The control unit 100 expands the area for acquiring content-based images using the method described above, and acquires images based on the content of the area, thereby being able to acquire images based on content that has a common meaning. The meaning can be made clearer.

Note that in step S426, the control unit 100 stores the content input in the comment box and the image based on the acquired content as a comment, along with information on the content ID, comment ID, creator, and location as comment information 156. do. The information on the content ID, comment ID, creator, and location is the same information as the information stored in step S112 of the comment storage process in the first embodiment.

When the process of step S428 is completed, the control unit 100 (UI processing unit 104) displays a list of comments (step S424). Note that when "image cutting" is selected from the menu, the image based on the content acquired in step S428 is also stored as a comment. Therefore, the comment displayed in step S424 includes an image of a portion of the content and the content (object) input in the comment box.

If the user icon is not touched in step S416 (step S416; No) or if "Image cropping" is not selected from the menu in step S426 (step S426; No), the control unit 100 controls the comment box. It is determined whether an operation of touching outside has been performed (step S430).

If the outside of the comment box is touched, the control unit 100 stores the content input in the comment box as a comment by executing the process of step S422 (step S430; Yes→step S422). On the other hand, if the area outside the comment box is not touched, the control unit 100 returns to step S408 (step S430; No→step S408).

According to this embodiment, the display device automatically acquires an image based on the content that serves as the background for the comment. Therefore, the user can make the content of the input comment and the image of a portion of the content into a comment by simply selecting a place to add a comment and inputting the comment.

[5. Fifth embodiment]
Next, a fifth embodiment will be described. The fifth embodiment is an embodiment in which files can be attached to comments. In this embodiment, in addition to the processes executed in the first to fourth embodiments, the control unit 100 executes the file attachment process shown in FIG. 12.

[5.1 Process flow]
The file attachment process will be described with reference to FIG. 12. The control unit 100 executes the file attachment process shown in FIG. 12 when the comment storage process or the comment storage/addition process is being executed. For example, the control unit 100 executes comment storage processing or comment storage/addition processing and file attachment processing in parallel.

Note that in the present embodiment, the control unit 100 (UI processing unit 104) reads the comment information 156 and adds an identification display (for example, , user icon). Further, the control unit 100 (UI processing unit 104) displays a comment box when a user icon is selected by the user. The control unit 100 (UI processing unit 104) causes the comment box to display a comment added to the location where the user icon selected by the user is displayed, and a clip button.

First, the control unit 100 determines whether there is an operation to attach a file (step S502). The operation of attaching a file is, for example, an operation in which the user selects a clip button displayed in a comment box. Note that the operation of attaching a file may be an operation of dragging the file to be attached and dropping it onto a comment box or a comment displayed in a list (drag and drop).

If there is an operation to attach a file, the control unit 100 controls the display unit 110 to display a file selection screen for selecting a file to be attached to the comment (step S502; Yes→step S504).

The control unit 100 displays the file selection screen until the user selects a file (step S506; No → step S504). On the other hand, if a file is selected by the user, the control unit 100 attaches the file selected by the user to the comment (step S506; Yes→step S508).

Specifically, the control unit 100 associates the comment information 156 corresponding to the comment to which the file is attached with the information of the file selected by the user in step S206. For example, the control unit 100 stores the file to be attached and the storage location of the file (eg, file path or URL) in the comment information 156 corresponding to the comment to which the file is attached. Note that any method may be used as long as a comment and a file can be associated with each other, and the control unit 100 associates the comment ID of the comment to which a file is to be attached with the file selected by the user. A method of storing the information in the storage unit 150 may also be used.

Note that when the user performs an operation to display a file attached to a comment, the control unit 100 displays the file attached to the comment on the display unit 110 based on the user's operation.

[5.2 Operation example]
An example of the operation of this embodiment will be described with reference to FIG. 13. FIG. 13(a) is a diagram showing an example of a display screen W500 on which content is displayed. At the right end of the display screen W500, a region R500 for displaying a list of comments is reserved.

Further, a user icon U500 is displayed on the display screen W500. When the user icon U500 is selected by the user, a comment added to the position where the selected user icon U500 is displayed is displayed in the comment box E500.

Comment box E500 includes a clip button M500. When the user selects the clip button M500, a display screen W210 including a file selection screen R210 is displayed as shown in FIG. 10(b). The user selects a file to be attached to the comment from the file selection screen R210. This will attach the file to the comment.

FIG. 10C is a diagram showing an example of the display screen W520 when the user selects a file to be attached to a comment. In a region R520 that displays a list of comments secured at the right end of the display screen W520, a comment to which a file is attached is displayed to indicate that a file is attached. For example, like comment C520 with a file attached, a clip button M520 is displayed to indicate that a file is attached to the comment. Further, in this case, the clip button M520 may be used as a button that accepts an operation to display a file attached to a comment.

Here, if the user selects the clip button M520, the file attached to the comment will be opened in the default application and a display displaying the contents of the file will be displayed, as shown in FIG. 10(d). Screen W530 is displayed.

According to this embodiment, a user can attach a related file to a comment. Furthermore, the contents of the attached file can be displayed by operating the comments displayed as a list. In this way, the user can understand the comments added to the content and the files related to the comments simply by viewing the list of comments.

[6. Sixth embodiment]
Next, a sixth embodiment will be described. The sixth embodiment is an embodiment in which the control unit 100 performs control to switch between displaying and non-displaying a handwritten figure displayed superimposed on content. In this embodiment, in addition to the processes executed in the first to fifth embodiments, the control unit 100 executes the display switching process shown in FIG. 14.

[6.1 Process flow]
The display switching process will be described with reference to FIG. 14. The control unit 100 executes the display switching process shown in FIG. 14 when the comment storage process or the comment storage/addition process is being executed. For example, the control unit 100 executes comment storage processing or comment storage/addition processing and display switching processing in parallel.

In this embodiment, the control unit 100 reads the handwritten figure information 154 and displays the handwritten figure superimposed on the content. Furthermore, the control unit 100 displays an identification display (for example, a user icon) indicating the user who has input the handwritten figure, on the content displayed on the display unit 110, based on the position stored in the handwritten figure information 154.

First, the control unit 100 determines whether a handwritten figure is displayed on the content (step S602). Here, the case where the handwritten figure is not displayed is the case where the handwritten figure information 154 is not stored in the storage unit 150 (the case where the handwritten figure is not input to the content). If the handwritten figure is not displayed, the display switching process ends (step S602; No).

Subsequently, when a handwritten figure is displayed on the content, the control unit 100 subsequently determines whether or not a touch input has been made to the user icon on the content (step S604). If it is determined that a touch input has been made to the user icon on the content, the control unit 100 hides the handwritten figure input at the position indicated by the selected user icon (step S604; Yes → step S606 ).

Specifically, the control unit 100 prevents the handwritten figure information input at the position indicated by the user icon to which the touch input has been made from being read out from the handwritten figure information 154. Then, the control unit 100 redisplays the handwritten figure so that the handwritten figure input at the position indicated by the selected user icon is not displayed superimposed on the content. Note that the control unit 100 keeps the user icon displayed on the content.

Subsequently, the control unit 100 determines whether a touch input has been made to the user icon selected by the user in step S604 (step S608). If it is determined that a touch input has been made to the user icon, the control unit 100 displays the input handwritten figure at the position indicated by the selected user icon (step S608; Yes→step S610). Specifically, the control unit 100 reads out the handwritten figure information 154 input at the position indicated by the touch-input user icon, and superimposes the read handwritten figure on the content displayed on the display unit 110. Make it visible.

Note that, after executing the process of step S610, the control unit 100 may transition the process to step S604 in order to execute the process of hiding the handwritten figure again.

[6.2 Operation example]
An example of the operation of this embodiment will be described with reference to FIG. 15. FIG. 15A is a diagram showing an example of a display screen W600 on which a handwritten figure is displayed superimposed on content. Region R600 shown in FIG. 15(a) is a region including a handwritten figure input by user C. Furthermore, as shown in FIG. 15A, a user icon U600 indicating the user C is displayed near the handwritten figure input by the user C as an identification display.

When a touch input, which is an operation for selecting user icon U600, is detected, as shown in FIG. 15(b), display screen W610 is displayed in which the handwritten figure input at the position indicated by user icon U600 is hidden. is displayed. Note that a user icon M610 indicating user C is displayed.

Further, when a touch input, which is an operation for selecting user icon U610, is detected on display screen W610, the handwritten figure inputted at the position indicated by user icon U610 is displayed. As a result, a display screen as shown in display screen W600 in FIG. 15(a) is displayed again. In this way, each time the user icon is selected, display/non-display of the handwritten figure input at the position indicated by the user icon can be switched.

According to the present embodiment, the user can switch between displaying and hiding a handwritten figure, which generally cannot be hidden or requires a complicated operation, by simply selecting the identification display. This can be done by operation. This allows the user to always secure an area for inputting handwritten figures.

In addition, in this embodiment, the handwritten figure is switched between display and non-display for each area where the handwritten figure is input, but the display and non-display of the handwritten figure may be switched for each user. However, it is also possible to switch between display and non-display of handwritten figures for all comments at once.

[7. Modified example]
The present invention is not limited to the embodiments described above, and various modifications are possible. That is, embodiments obtained by combining appropriate modified technical means without departing from the gist of the present invention are also included within the technical scope of the present invention.

Moreover, each function may be configured by a program or may be configured by hardware. If it is realized by a program, it is recorded on a recording medium, and the program may be read from the recording medium and executed, or it may be saved on a network and downloaded and executed.

In addition, although some of the embodiments described above are explained separately for convenience of explanation, it goes without saying that they may be combined and executed within the technically possible range.

For example, the first embodiment and the third embodiment may be combined. For example, when the control unit 100 of the display device 10 detects a specific gesture such as a long press, it displays the menu as described in the first embodiment, and when it detects an input other than the specific gesture, it displays the menu. Accepts input of handwritten shapes.

Further, the sixth embodiment and the seventh embodiment may be combined. For example, the control unit 100 of the display device 10 accepts a file attachment when the handwritten input input to the content is stored as a comment, and switches display/non-display when the handwritten input is not stored as a comment. .

Further, in the embodiment, the program that runs on each device is a program that controls the CPU, etc. (a program that causes the computer to function) so as to realize the functions of the embodiment described above. The information handled by these devices is temporarily stored in a temporary storage device (for example, RAM) during processing, and then stored in various ROM, HDD, and SSD storage devices, and read out by the CPU as necessary. , corrections and writing are performed.

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

Alternatively, applications with each function may be installed and executed on various devices such as smartphones, tablets, and image forming apparatuses.

10 Display device 100 Control unit 102 Comment processing unit 104 UI processing unit 106 User authentication unit 110 Display unit 120 Input unit 150 Storage unit 152 Content information 154 Handwritten figure information 156 Comment information 158 User information 160 Communication unit

Claims (7)

A display device including a display unit that displays content, an input unit, a storage unit, a control unit, and a selection operation reception unit,
The storage unit is capable of storing characters or images as comments in association with the content,
The selection operation reception unit is capable of accepting a selection operation for selecting either the first process or the second process,
When the control unit receives a position specifying operation by the input unit for the content displayed on the display unit, the control unit may cause the display unit to add information to the display unit around the position at which the position specifying operation is received on the display unit. displaying on the display section an input area for inputting a second image for the displayed content;
The selection operation accepting unit accepts the selection operation after the second image is input into the input area,
The storage unit includes:
When the selection operation reception unit receives the selection operation for selecting the first process, it specifies a capture area including a range where the content and the input area overlap, and selects the capture area of the content. storing a first image that is a captured image and the second image input into the input area as the comment;
When the selection operation reception unit receives the selection operation for selecting the second process, storing the second image input in the input area as the comment;
A display device characterized by: The input unit is a touch panel,
The display device according to claim 1, wherein the position designation operation is a touch operation accepted by the input unit. The control unit includes:
An image based on a handwritten figure input for the content displayed on the display unit,
the second image;
The display device according to claim 1 or 2, characterized in that: The control unit includes:
The display device according to claim 3, wherein the display device controls switching between displaying and non-displaying the handwritten figure. The control unit includes:
The display device according to claim 3, wherein an identification display indicating a user who inputs the handwritten figure is displayed near the handwritten figure. The control unit includes:
The display device according to claim 5, wherein the display device controls switching between displaying and non-displaying the handwritten figure by selecting the identification display. 7. The display device according to claim 1, wherein the control unit stores the comment in association with a file.

Images