JP7428316B2 - Data display device, data display system, and program - Google Patents

Description

The present invention relates to a material display device, a material display system, and a program.

2. Description of the Related Art At events such as conferences, meetings, and lectures, systems are used in which personal computers (PCs), mobile terminals, and the like are connected to each other via a network to share electronic data such as materials. In such systems, the display screen of the terminal device used by the presenter is generally synchronized with the terminal device used by the presenter and the terminal devices used by participants other than the presenter. The content (such as a document display page) is displayed on the display screen of a terminal device used by a participant other than the presenter.

For example, Patent Document 1 discloses that when a user presses a synchronization button displayed on the screen of a terminal device, the display contents of other terminal devices are displayed in synchronization, and the user can press the synchronization button displayed on the screen of the terminal device. Disclosed is an electronic conference system that allows a user to switch between synchronous and asynchronous modes on a terminal device by displaying content that is different from display content on other terminal devices when an asynchronous button is pressed. ing.

Japanese Patent Application Publication No. 2010-33229

As described above, the electronic conference system disclosed in Patent Document 1 requires the user of the terminal device to always perform a switching operation between synchronous and asynchronous on the terminal device that is displayed in synchronization with other terminal devices, which is complicated. Therefore, it cannot be said that it is highly convenient.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to improve the convenience of viewing materials for participants.

In order to achieve the above object, the document display device according to the present invention includes:
A material display device that displays meeting materials distributed from a material distribution device to participants of the meeting ,
presenter operation information acquisition means for acquiring presenter operation information indicating the operation content of the material displayed on the presenter material display device by the presenter of the conference ;
Participant operation information acquisition means for acquiring participant operation information indicating the operation content of the participant;
Display means for displaying the material;
A display mode in which the display mode is switched and set based on the presenter operation information and the participant operation information between a shared mode in which the display of the material is synchronized with the presenter material display device and an individual mode in which the display is not synchronized. a switching means;
Display control means for controlling the display of the material by the display means according to the setting of the display mode by the display mode switching means ,
The display mode can also be switched from the presenter material display device,
The display means includes a first icon indicating whether the document is currently being referred to by the presenter, and a second icon indicating whether the sharing mode is maintained on the presenter document display device. Show more icons and.

For example, the display mode switching means sets the display mode based on whether a sharing mode cancellation condition for canceling the sharing mode is satisfied.

The information processing apparatus may further include a text editing means capable of editing a memo regarding the material using text data.

The information processing apparatus may further include means for registering a bookmark on any page of the material and, by selecting the bookmark, causing the display to jump to a position corresponding to the selected bookmark.

The data display system of this invention is
a material distribution device for distributing meeting materials ;
a material display device that displays the materials distributed from the material distribution device and is viewed by participants of the conference ;
Equipped with
The data display device includes :
presenter operation information acquisition means for acquiring presenter operation information indicating the operation content of the material displayed on the presenter material display device by the presenter of the conference ;
Participant operation information acquisition means for acquiring participant operation information indicating the operation content of the participant;
Display means for displaying the material ;
A display mode in which the display mode is switched and set based on the presenter operation information and the participant operation information between a shared mode in which the display of the material is synchronized with the presenter material display device and an individual mode in which the display is not synchronized. a switching means;
Display control means for controlling the display of the material on the display means according to the setting of the display mode by the display mode switching means ,
The display mode can also be switched from the presenter material display device,
The display means includes a first icon indicating whether the document is currently being referred to by the presenter, and a second icon indicating whether the sharing mode is maintained on the presenter document display device. Show more icons and.

The program of this invention allows a computer to
presenter operation information acquisition means for acquiring presenter operation information indicating the operation content of the conference material displayed on the presenter material display device by the presenter of the conference ;
participant operation information acquisition means for acquiring participant operation information indicating operation details of the participants of the conference ;
display means for displaying the material;
A display mode in which the display mode is switched and set based on the presenter operation information and the participant operation information between a shared mode in which the display of the material is synchronized with the presenter material display device and an individual mode in which the display is not synchronized. switching means,
functioning as a display control means for controlling the display of the material on the display means according to the setting of the display mode by the display mode switching means ;
The display mode can also be switched from the presenter material display device,
The display means includes a first icon indicating whether the document is currently being referred to by the presenter, and a second icon indicating whether the sharing mode is maintained on the presenter document display device. Show more icons and.

According to the present invention, it is possible to improve the convenience in viewing materials.

1 is a block diagram showing the configuration of a material distribution system according to an embodiment of the present invention. FIG. 2 is a block diagram showing the hardware configuration of the material distribution device shown in FIG. 1. FIG. 2 is a block diagram showing the functional configuration of the material distribution device shown in FIG. 1. FIG. FIG. 2 is a block diagram showing the hardware configuration of the viewing terminal (material display device) shown in FIG. 1. FIG. FIG. 2 is a block diagram showing the functional configuration of one of the viewing terminals shown in FIG. 1 on which a dedicated program has been installed. 2 is a block diagram showing the functional configuration of one of the viewing terminals shown in FIG. 1 in which a dedicated program is not installed. FIG. It is a figure which shows an example of a registration/change screen. It is a figure which shows an example of a batch operation selection screen. It is a figure which shows an example of a registration/change screen. (A) A diagram showing an operation screen that displays details of updating materials. (B) A diagram showing an example of an update history confirmation screen. FIG. 3 is a diagram showing an example of a user account table. FIG. 3 is a diagram showing an example of a conference table. It is a figure showing an example of a material table. It is a figure showing an example of a material history table. It is a figure showing an example of a guest user participation possibility table. It is a figure showing an example of a login screen. It is a flowchart of login processing. It is a figure which shows an example of the top page of a conference room. FIG. 3 is a diagram showing an example of a presenter screen. FIG. 6 is a diagram showing an example of a presenter screen when "temporary authentication information" is issued. FIG. 3 is a diagram showing an example of a login screen on which "temporary authentication information" is input. FIG. 6 is a diagram illustrating an example of a presenter screen after a guest enters the room. FIG. 3 is a diagram showing an example of a shared mode cancellation condition table. FIG. 3 is a diagram showing an example of a screen of a conference participant's viewing terminal, and is an example of a screen in a non-shared mode. FIG. 3 is a diagram illustrating an example of a screen of a conference participant's viewing terminal, and is an example of a screen in a shared mode. It is a figure which shows the example of a screen of the viewing terminal of a meeting participant. It is a figure which shows the example of a screen of the viewing terminal of a meeting participant. It is a figure which shows the example of a screen of the viewing terminal of a meeting participant. It is a figure which shows the example of a screen of the viewing terminal of a meeting participant. It is a figure which shows the example of a screen of the viewing terminal of a meeting participant. It is a figure which shows the example of a screen of the viewing terminal of a meeting participant. It is a figure which shows the example of a screen of the viewing terminal of a meeting participant. It is a figure which shows the example of a screen of the viewing terminal of a meeting participant. It is a figure which shows the example of a screen of the viewing terminal of a meeting participant. It is a figure which shows the example of a screen of the viewing terminal of a meeting participant. FIG. 3 is a diagram illustrating the storage format of materials, handwritten memos, and text memos. It is a flowchart of display update processing.

Hereinafter, a material distribution system according to an embodiment of the present invention will be described with reference to the drawings.

A material distribution system 1 according to an embodiment of the present invention is a system that distributes materials (electronic data) used in various events such as courses, conferences, and meetings to terminal devices used by participants. As shown in FIG. 1, the material distribution system 1 distributes event materials registered by an event organizer or the like to each of viewing terminals (material display devices) 100 and viewing terminals 100 used by event participants. and a material distribution device 200.

Note that this embodiment will be described using a conference as an example of an event.

Each of the viewing terminals 100 and the material distribution device 200 are connected to be able to communicate with each other via the network NW. The network NW may be configured not only of a network compliant with a single communication protocol but also of multiple networks compliant with different communication protocols. The communication protocol is selected from well-known wired and wireless communication standards, and for example, a wireless LAN (Local Area Network) such as Wi-Fi (registered trademark) is applied as the wireless communication protocol.

In this embodiment, the material distribution system 1 includes N viewing terminals 100-1, 100-2, . ．． ．． The explanation will be made assuming that 100-N is included. Note that N is an integer of 2 or more. Further, it is also possible to add/join the viewing terminals 100 and to leave some of the viewing terminals 100.
Note that the viewing terminals 100-1, . ．． ．． 100-N is referred to as the viewing terminal 100 when not specifically distinguished from each other or when they are collectively referred to.

The viewing terminal 100 is an electronic device used by a conference presenter to view materials while proceeding with the conference, or by conference participants to view distributed materials, such as a laptop computer or a tablet terminal. , smartphones, etc. Viewing terminal 100 is an example of a document display device.

Some of the viewing terminals 100 are used by registered users who have an account, which is registration information for accessing and using the material distribution system 1, and others are used by non-registered users who do not have an account (hereinafter referred to as guest users). There is a mixture of things that do. Further, one of the viewing terminals 100 is used for a presenter who is the facilitator of the conference, and the other viewing terminals 100 are used for participants.

Registered users can use the viewing terminal 100 to 1) set up a conference, 2) proceed with the conference while distributing and presenting materials to conference participants, and 3) participate in the conference and be a presenter. 4) Before the start of the meeting or after the end of the meeting, the materials used at the meeting or the materials used at the meeting can be downloaded in file units. can.

On the other hand, non-registered users can: 1) participate in the conference by logging into the material distribution device 200 using temporary authentication information (flash share code), download page-by-page image data of the materials presented by the presenter; 2) If permitted, materials may be downloaded in file units after the meeting.

(Hardware configuration of material distribution device 200)
Next, the material distribution device 200 will be explained.
The material distribution device 200 1) registers a conference, 2) receives materials to be used in the conference in file units, and 3) during the conference, distributes the materials page by page to each conference participant in response to the presenter's operation. 4) Provide (download) the material to the viewing terminal 100 in file units.

As shown in FIG. 2, the material distribution device 200 physically includes a CPU (Central Processing Unit) 201, a ROM (Read Only Memory) 202, a RAM (Random Access Memory) 203, an auxiliary storage device 204, and a display device 205. , an input device 206, and a communication device 207. These parts are electrically connected to each other via a bus line BL.

The CPU 201 is an arithmetic unit that implements various functions of the material distribution device 200 by reading programs from the ROM 202 and the auxiliary storage device 204 onto the RAM 203 and executing them.

The ROM 202 is a nonvolatile memory that stores various programs executed by the CPU 201 and various fixed data used when executing the programs.

The RAM 203 is a volatile memory that temporarily holds programs and data read from the ROM 202 and the auxiliary storage device 204, and is used as a work area for the CPU 201.

The auxiliary storage device 204 is a nonvolatile storage device such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive) whose storage contents are rewritable. The auxiliary storage device 204 stores, for example, a program executed by the CPU 201, data used when executing the program, and data generated by executing the program. The auxiliary storage device 204 stores a program related to material distribution processing, which will be described later.

The display device 205 is an image display device such as an LCD (Liquid Crystal Display), a PDP (Plasma Display Panel), or an organic EL (Electro-Luminescence) display, and displays various images under the control of the CPU 201.

The input device 206 is an operation input device such as a keyboard, a mouse, a switch button, etc., and receives various operations by the user, and supplies an operation signal to the CPU 201 according to the received operation. Note that the input device 206 may be a touch panel that includes a display screen of the display device 205 and a touch sensor provided over the display screen. In this case, the input device 206 supplies the CPU 201 with an operation signal according to the detection result by the touch sensor, such as the contact position and contact mode related to the user's contact operation on the touch panel.

The communication device 207 is a communication interface for communicating with each of the viewing terminals 100. The communication device 207 transmits and receives various data to and from each of the viewing terminals 100 via the network NW under the control of the CPU 201 .

(Functional configuration of material distribution device 200)
Functionally, the material distribution device 200 includes a control section 210, a storage section 220, a display section 230, an operation section 240, and a communication section 250, as shown in FIG. Each functional unit is realized by the CPU 201 executing a material distribution processing program stored in the auxiliary storage device 204 using the RAM 203 as a work area.

The control unit 210 controls each component of the material distribution device 200. Functionally, the control section 210 includes an authentication section 211, a temporary authentication information issuing section 212, a material management section 213, a material distribution section 214, and a presenter operation information notification section 215.

The authentication unit 211 authenticates the user as having legitimate access authority based on the authentication information included in the login request received from the viewing terminal 100. Specifically, the authentication unit 211 compares the authentication information (account: ID and password) stored for each user in the storage unit 220 with the authentication information (ID and password) transmitted from the viewing terminal 100, If both match, it is determined that the user is a registered user of this material distribution system 1 and the authentication is successful.
In addition, when the authentication unit 211 receives the temporary authentication information issued by the temporary authentication information issuing unit 212 from the viewing terminal 100 within a predetermined period of time after the issuance, the authentication unit 211 transmits the information to the user of the viewing terminal 100 that is the source of the authentication information. is considered to be a guest user, and the authentication is determined to be successful.

In response to a predetermined request operation on the presenter's viewing terminal 100, the temporary authentication information issuing unit 212 issues temporary authentication information (flash share code) for the presenter to participate (log in) to a specific conference (only) of the facilitator. ) is issued to the requesting viewing terminal 100. The temporary authentication information is, for example, a password that is valid only for a certain period of time and can only be used once.

The material management unit 213 manages materials for each event and for each file. The contents of management include management of distribution permission period, management of notes information, management of download information, status information, etc. The distribution permission period refers to the period during which the distribution of materials is permitted. The notes information is notes information/memo information input by the administrator regarding each document. The download information is information indicating who downloaded the material in file units. The status information is information indicating whether or not the material has been updated, the version, etc.

The material distribution unit 214 downloads the corresponding material to the viewing terminal 100 owned by the authenticated user.
There are two types of downloading: page by page and file by file.
First, during the conference, image data of the page being referred to in the material being referred to by the presenter is distributed to each viewing terminal 100 in accordance with the progress of the presenter's conference. Details of the distribution process will be described later.

Further, when the material distribution unit 214 receives a request for downloading a file of materials from a registered user before the start or after the end of a meeting, the material distribution unit 214 transmits the requested materials to the viewing terminal 100 that made the request. If the material includes the presenter's handwritten memo (comment) created during the meeting or the user's own handwritten memo, the material distribution unit 214 includes a layer of images of the original material and the presenter's handwritten memo. The memo image layer and the user's own handwritten memo image layer are combined to generate, for example, a PDF format file, and this is provided to the viewing terminal 100. Further, if a user's text memo (comment) is attached to the material, the material distribution unit 214 provides the text memo file to the viewing terminal 100 together with the material file.

Regarding the guest user, when receiving a request to download a document from the viewing terminal 100 after the meeting, the document distribution unit 214 requests the requested document if downloading of the document is permitted. It is sent to the original viewing terminal 100. Note that if the material has a presenter's handwritten memo created during the meeting or the user's own handwritten memo, the material distribution unit 214 will add a layer of images of the original material and the presenter's handwritten memo. The layer of the image of the user and the layer of the image of the user's own handwritten memo are combined and provided to the viewing terminal 100. Further, if a user's text memo is attached to the material, the material distribution unit 214 provides the text memo file to the viewing terminal 100 together with the material file.

The presenter operation information notification unit 215 supplies operation information indicating the content of the operation performed by the presenter (meeting facilitator) on the viewing terminal 100 during the conference to the viewing terminals 100 of all participants participating in the conference. The operation information is, for example, when the presenter performs 1) the operation when a certain material is selected, 2) the operation when the presenter opens a specific page of the material, 3) the presenter advances the page of the material, or This information indicates the operation when returning the data. Furthermore, when a presenter writes a handwritten memo on a document with a stylus pen, a mouse, etc., the presenter operation information notification unit 215 allows conference participants other than the presenter to view vector data that identifies the memo (image) drawn. It is supplied to the terminal 100.

The function of the presenter operation information notification unit 215 allows the conference participants to proceed with the conference while viewing a common page of common materials.

(Hardware configuration of viewing terminal 100)
As shown in FIG. 4, the viewing terminal 100 shown in FIG. Equipped with. These parts are electrically connected to each other via a bus line BL.
The functions of each part are substantially the same as the parts constituting the material distribution device 200.

(Functional configuration of viewing terminal 100)
The viewing terminal 100 registered in advance in the material distribution device 200 is in a state where the dedicated application is downloaded from the material distribution device 200 and installed in the auxiliary storage device 104. The viewing terminal 100 on which the dedicated application is installed functionally includes a control section 110, a storage section 120, a display section 130, an operation section 140, and a communication section 150, as shown in FIG.

The control unit 110 is realized by the CPU 101 executing an operation program stored in the storage unit 120 using the RAM 103 as a work memory. Functionally, the control section 110 includes an operation information notification section 111, a material acquisition section 112, a material management section 113, a display control section 114, a text editing section 115, a display mode switching section 116, a graphics section 117, and a bookmark section 118. have

The operation information notification unit 111 notifies the material distribution device 200 of information indicating the content of the user's operation on the viewing terminal 100. This operation information is information indicating, for example, a key input operation, a mouse operation, an icon operation, a document reading operation, a page designation operation, a page forward operation, a page return operation, a page jump operation, etc. of the viewing terminal 100.

The material acquisition unit 112 receives from the material distribution device 200 information specifying the material to be viewed by the presenter and the page to be viewed from the material distribution device 200 during the meeting, and requests the material distribution device 200 to provide image data of the same page of the same material. do. This allows each viewing terminal 100 to view images synchronized with the presenter.
Further, the material acquisition unit 112 downloads materials from the material distribution device 200 in file units.

Further, the material management unit 113 manages downloaded materials. For example, among the provided materials, it is possible to manage which materials have been downloaded and which materials have not been downloaded.

The display control unit 114 controls the screen display of materials, images provided by a presenter in a meeting, and the like.

The text editing unit 115 edits text information input by the user, such as text memos.

The display mode switching unit 116 switches between a shared mode in which the display of the viewing terminal 100 is synchronized with the presenter's display, and a unique mode in which the display is asynchronous with the presenter's display.

The graphics unit 117 generates vector data of an image drawn by a user using a stylus pen, a mouse, etc., such as a handwritten memo. This vector data identifies the lines that make up the handwritten memo, including the starting point, intermediate point, etc. on the page of the line material. ．． ．． This is data expressed by the position of the end point, line color, line thickness, etc.

The bookmark unit 118 stores an arbitrary position of the material according to the user's operation. The bookmark section 118 can be displayed by jumping to any of the storage locations.

On the other hand, the dedicated application is not installed on the viewing terminals 100 of some users. Therefore, the viewing terminal 100 only has the general functions of a mobile terminal, and as shown in FIG. Equipped with. The browse function 121 is a function that draws and displays various data. The text editing section 122 edits text information input by the user. The display mode switching unit 123 switches between a shared mode in which the display of the viewing terminal 100 is synchronized with the presenter's display, and a unique mode in which the display is asynchronous with the presenter's display. The graphics unit 124 generates vector data of the handwritten memo input by the user. It also reproduces handwritten memos expressed in vector data. The bookmark unit 125 generates bookmark information indicating the referenced location of the material.

Next, the operation of the material distribution system 1 having the above configuration, that is, the method of proceeding with a meeting using the material distribution system 1 will be explained.
Note that the conference may be either a conference in which at least some of the participants gather at a venue and are held using the web, or a conference that is held only over the Internet.
The following explanation assumes a conference in which a presenter and participants gather at a venue. It is also assumed that a dedicated program is installed on the viewing terminal 100.

(user registration)
A person who plans to use the material distribution system 1 registers his or her account (ID and password) in the system in advance. The name, ID, and password of the registered user are registered in the user account table T1 stored in the storage unit 220 of the material distribution device 200, as illustrated in FIG. The user ID may be any information that can identify the user, such as an email address. The password may be any authentication information such as biometric information.

(Meeting preparation)
Before a conference is held, a person in charge of the conference organizer (hereinafter simply referred to as a person in charge) sets up a conference room (to be distinguished, a virtual conference room) on the Internet.

To set up this virtual conference room, the person in charge operates the viewing terminal 100 to access the material distribution device 200, and then uses the function of the operation information notification unit 111 to input the ID and password to the material distribution device 200. Send. The authentication unit 211 of the material distribution device 200 authenticates the user, and if the authentication is successful, permits access.

The user who has been successfully authenticated operates the viewing terminal 100 to start the material management section 213 of the material distribution device 200, and causes the display section 130 to display the registration/change screen 30 illustrated in FIG. As shown in the figure, this registration/change screen 30 includes a conference name input field 31, a summary input field 32, a scheduled date of use field 33, a handout material field 34, and a management setting field 35.

The person in charge inputs the conference name in the conference name input field 31 and the outline of the conference in the summary input field 32, respectively, in text. Further, the scheduled date and time of use of the material is registered in the scheduled use date field 33, the material to be distributed in the handout field 34, and the management details in the management setting field 35, respectively.

Furthermore, the person in charge sets the material name, distribution period, notes, and whether or not it can be downloaded in file units in the handout field 34. The material management unit 213 sets the downloadability of each registered handout material to "possible" (○) and the status to "new arrival." The person in charge sets the distribution period for each material and also inputs an arbitrary text string in the notes column.

The person in charge can arbitrarily set and change the distribution period, permission for downloading, suspension of distribution, deletion, etc. Note that each handout can be input and set individually.

Furthermore, by selecting a pull-down menu, it is also possible to input and set all the materials constituting a plurality of material sets at once. For example, when a pull-down menu is opened, as shown in FIG. 8, ``Change distribution time,'' ``Permit download,'' ``Stop distribution,'' and ``Delete'' can be selected. For example, if you select "Change distribution time" and specify a period, the distribution period will be set for all materials. Furthermore, if "Download Permission" is selected, download permission is set for all materials. If you select "Stop Distribution," downloading of all materials will be prohibited and distribution will be stopped, although the materials themselves will remain. In this case, the file name and distribution period are crossed out, and the status is set to "Suspended." Also, if you select "Delete", all the materials will be deleted and will no longer be displayed.

The person in charge registers information specifying the person to whom the materials are to be distributed in the registered user field 36 of the management setting field 35. Users registered here will be participants in the conference. A user who can be registered is a user who has an account registered in the user account table T1.

In addition, in the guest user column 37, i) settings are made as to whether or not to allow guests to participate in this conference, and ii) settings are made as to whether or not to allow the guest users to download materials when participation is permitted. As described above, a guest user is a user who is not registered in the user account table T1 or a user who cannot be registered in advance and is not registered as a prospective participant.

Further, the person in charge specifies the person who will be the presenter (facilitator) in the presenter setting field 38. The presenter is selected from among the registered users who are registered in the registered user column 36 and who are scheduled to participate in the conference.

Further, the person in charge registers the material managers in the material set manager column 39 and sets authority (registration/deletion) for each manager. The authority includes information such as whether to permit registration of materials (new registration and updated registration) and whether to permit deletion. Note that authority can be entered and set individually, or can be set for multiple administrators at once by selecting a pull-down menu.

When the input/setting/editing is completed, the person in charge clicks the registration/change button 40. In response to this operation, the operation information notification unit 111 of the control unit 110 transmits the information and file input to the material distribution device 200 via the communication unit 150. The material management unit 213 of the material distribution device 200 receives input information and files via the communication unit 250, generates a conference table T2 illustrated in FIG. 12 from the received input information, and registers it in the storage unit 220. The conference table T2 is a table that associates conferences with information about the conference, such as the names and user IDs of registered users participating in the conference, the date and time of the conference, and the like.

Further, the material management unit 213 generates a material table T3 illustrated in FIG. 13 from the information in the handout column 34, and registers it in the storage unit 220. The material table T3 is a table that associates a meeting with materials scheduled to be distributed at the meeting. Regarding each material, information such as the material name, distribution period, memo, download availability, status, material ID, etc. is included. In FIG. 13, "updated" and the like are displayed as the status, but at the time of initial registration, the status of the published material is only "new". When a document is updated in addition/edit processing, which will be described later, the document management unit 213 changes the status to "updated".

Further, upon receiving the material, the material management unit 213 generates a thumbnail image of the material and stores it in association with the material.

The material management unit 213 generates a material history table T4 illustrated in FIG. 14 for each material from the information in the handout column 34, and registers it in the storage unit 220. The material history table T4 is a table that records the history of each material, and associates conference rooms, materials, versions of materials, dates of registration of materials, and addresses of storage locations of materials. Note that in FIG. 14, versions up to 4 are listed, but only version 1 is initially registered.

The material management unit 213 generates a guest user participation permission table T5 illustrated in FIG. 15 from the information in the guest user column 37, and registers it in the storage unit 220. The guest user participation permission table T5 indicates the name of the conference, whether or not guest users are allowed to participate in the conference, and if it is allowed, whether or not they can download materials.

The person in charge operates the viewing terminal 100 to display the registration/change screen 30 again as necessary, and edits the registered items as illustrated in FIG. 9 . For example, the outline of the meeting is changed, the date of the meeting is changed, materials scheduled to be distributed are added, updated, or deleted, the distribution period is changed, download availability is changed, and corrections (changes) are made. In addition, permission for guest users to participate and permission for downloading materials is changed, and furthermore, a material manager is added and changed.

Here, when the person in charge clicks the registration/change button 40, the operation information notification section 111 of the control section 110 transmits this to the material distribution device 200. The material management unit 213 of the material distribution device 200 updates the conference table T2, material table T3, material history table T4, and guest user participation permission table T5 shown in FIGS. 12 to 15 according to the input contents.

On the registration/change screen 30 shown in FIG. 9, there are cases where it is desired to check the update history or the contents of past versions of materials whose status is "updated". In this case, the person in charge clicks "updated" in the status of the material of interest in the handout column 34. In response to this operation, the material management unit 113 displays a box 41 for selecting “detailed information” and “update history” on the display unit 130, as shown in FIG. 10(A).

When the person in charge clicks on “detailed information”, the control unit 110 transmits this operation information to the material distribution device 200. In response to the operation information, the material management unit 213 of the material distribution device 200 reads detailed information about the updated content of the material and transmits it to the viewing terminal 100. The material management unit 113 of the viewing terminal 100 displays the received detailed information on the display unit 130.

On the other hand, when the person in charge clicks on "update history", the control unit 110 transmits this operation information to the material distribution device 200. In response to the operation information, the material management unit 213 accesses the material history table T4, identifies thumbnail images of a series of past versions of the relevant material, reads them from the storage unit 220, converts them into icons, and displays them on the viewing terminal 100. Send. The material management unit 113 of the viewing terminal 100 displays a list of the received icons on the display unit 130 as shown in FIG. 10(B). Note that this is a specific example where there are four versions of material BBB, as shown in FIG. 14. When any thumbnail is clicked, the control unit 110 transmits this operation information to the material distribution device 200. In response to the operation information, the material management section 213 of the material distribution device 200 refers to the material history table T4, reads the corresponding material from the corresponding address in the storage section 220, and sends it to the viewing terminal 100. Send. The control unit 110 receives the material and displays it on the display unit 130.
A mode may be provided to display a list of thumbnail images of all histories of all materials.

(Participating in meetings and downloading materials)
The registered user operates his own viewing terminal 100 to access the material distribution device 200, opens the login page of the material distribution system 1 illustrated in FIG. 16A, inputs his own ID, and sends it. The authentication unit 211 receives the data and starts the login process shown in FIG. 16B, and first determines whether the input data is the user ID registered in the user account table T1 shown in FIG. 11 (step S11). When the authentication unit 211 determines that the user ID of the registered user has been input (step S11: Yes), it transmits a password input screen to the viewing terminal 100. The viewing terminal 100 displays a password input screen (step S12). Registered users enter their passwords. The viewing terminal 100 transmits the input password to the material distribution device 200. The authentication unit 211 determines whether the pair of the previously input ID and the currently input password is registered in the user account table T1 (step S13).

If the user ID is registered, that is, if the authentication is successful (step S13: Yes), the authentication unit 211 refers to the conference table T2, and uses the user ID to create a list of conferences in which the user is registered as a participant. , is transmitted to the viewing terminal 100. The viewing terminal 100 receives the list of conferences and displays it (step S14). The user selects any conference from the displayed list. This operation is notified to the material distribution device 200.

The material management unit 213 selects a conference according to the notification (step S15), and transmits the page for the selected conference to the viewing terminal 100 (step S16). The viewing terminal 100 displays the page of the corresponding conference, as illustrated in FIG. 17 . This page includes conference schedules, a list of materials that can be downloaded in file units, and more.

Note that if the pair of user ID and password is not registered in the user account table T1 (step S13: No), appropriate error processing is executed (step S17).

Registered users can check the conference schedule on the provided homepage. It is also possible to select downloadable materials and instruct downloading in file units.
When downloading materials in file units, the material acquisition unit 112 of the viewing terminal 100 requests the material distribution device 200 to download the materials in response to a user's operation. The material distribution unit 214 of the material distribution device 200 reads the stored material and transmits it to the viewing terminal 100 in response to a request from the viewing terminal 100 .

The material acquisition unit 112 of the viewing terminal 100 receives the material transmitted from the material distribution device 200 and stores it in the storage unit 120. The material management unit 113 of the viewing terminal 100 manages the version, status, etc. of downloaded materials.

The user can operate the operation unit 140 of the viewing terminal 100 to display the material stored in the storage unit 120 on the display unit 130 for viewing. The text editing unit 115 can place notes based on text data on each page of each document.

(Operation at the start of a meeting)
At the start of the conference, each registered user performs the above-described authentication process and enters the conference room.
When the start time of the conference arrives, the pre-registered presenter opens the presenter screen of the material distribution device 200 on the display unit 230, displays any material, and proceeds with the meeting while referring to it. It is up to the presenter to decide which part of which material to display.

The display screen for the presenter is divided into two windows, left and right, as shown in Figure 18, and the left window is further divided into two, vertically, with the presenter's information in the upper window and the attendees' information in the lower window. Information will be displayed.
A change button for changing the presenter is arranged in the upper window.

Furthermore, if "guest user participation allowed" is set in the guest user participation permission table T5 shown in FIG. do. This button is used to give those who have not been able to register as participants the opportunity to participate in the conference as a guest.

A user who wishes to participate in the "ABCD conference" as a guest informs the presenter of his or her desire to participate in the conference by any means such as verbally or by email.

If there is a request, the presenter clicks the "Issue temporary authentication information" button 51.
In response to this click operation, the control unit 110 transmits a temporary authentication information issuance request to the material distribution device 200. The temporary authentication information issuing unit 212 responds to the temporary authentication information issuance request, generates a random number, etc., issues a temporary authentication number and a validity period, and transmits it to the viewing terminal 100. Further, when the temporary authentication information issuing unit 212 issues the temporary authentication number, it starts measuring the elapsed time, and when the measured time reaches the set display period, invalidates the temporary authentication number.

The presenter's viewing terminal 100 receives the temporary authentication number and validity period from the material distribution device 200. The display control unit 114 of the viewing terminal 100 displays the received temporary authentication number and validity period as shown in FIG. 19. The display control unit 114 also starts measuring the elapsed time and displays the remaining time or end time of the validity period in the form of a bar graph, for example, as shown in FIG. 19. When the measured time reaches the valid period, the display control unit 114 erases the display of the temporary authentication information and the valid period.
The presenter conveys the displayed "temporary authentication information" and "validity period" to the guest orally, by e-mail, or the like.

The guest accesses the material distribution device 200 using his or her own viewing terminal 100, and uses the browsing function 121 to display the login screen shown in FIG. 16A.

The guest enters temporary authentication information on the login screen and clicks "Next", as illustrated in FIG. 20. The operation information notification unit 111 transmits the input temporary authentication information to the material distribution device 200. The authentication unit 211 of the material distribution device 200 starts the login process shown in FIG. 16B, determines NO in step S11, and determines whether the input data is temporary authentication information in step S18. In this example, since the temporary authentication information is used, if the login process is within the validity period of the temporary authentication information (step S18: Yes), the process proceeds to step S16, and the conference page of the conference that issued the temporary authentication information is displayed. 17 and sends it to the guest user's viewing terminal 100. The viewing terminal 100 displays the received conference page. Note that if the input data is neither a user ID nor temporary authentication information (step S18: No), appropriate error processing is executed (step S19).

The authentication unit 211 of the control unit 210 displays guest information (guest 01, etc.) in the lower left window of the screen of the presenter's viewing terminal 100, as illustrated in FIG.

(Operations during a meeting)
When the participants of the conference are gathered, the presenter starts the conference.
During the meeting, the presenter displays any page of any material on the display unit 230 of the material distribution device 200 and proceeds with the meeting.
The viewing terminals 100 of all conference participants basically display the same screen as the screen of the presenter's viewing terminal 100. Therefore, conference participants can proceed with the conference while sequentially referring to the same page of the same document.

The process of synchronizing the displays of multiple viewing terminals 100 in this way will be described.
When a presenter calls up a certain document and instructs to open an arbitrary page on his or her own viewing terminal 100, all these operations are notified to the document distribution device 200 by the operation information notification unit 111.

In response to the operation information from the presenter's viewing terminal 100, the material management unit 213 of the material distribution device 200 informs all viewing terminals 100 that the presenter has instructed to read a specific material and to open a specific page. notify you of what has happened.

In response to the notification, the material management unit 113 of each viewing terminal 100 transmits a request signal to the material distribution device 200 to request downloading of the notified page of the notified material.

In response to the material request signal, the material distribution unit 214 of the material distribution device 200 generates and downloads image data of the requested page of the requested material to all viewing terminals 100 that have made the request.

The display control unit 114 of each viewing terminal 100 receives the transmitted image and transmits a request signal requesting downloading of the notified page of the material.

For example, assume that the presenter performs an operation to instruct page turning while displaying page 2 of material BBB. This operation is notified to the material distribution device 200 by the operation information notification unit 111. In response to the operation information, the material management unit 213 of the material distribution device 200 notifies all viewing terminals 100 that the presenter has instructed to open page 3 of material BBB. In response to the notification, the material acquisition unit 112 of each viewing terminal 100 transmits a request signal requesting the material distribution device 200 to download page 3 of the material BBB. In response to the material request signal, the material distribution unit 214 of the material distribution device 200 synthesizes the image of page 3 of the material BBB, and transmits the data of the synthesized image to the requesting viewing terminal 100. The display control unit 114 of each viewing terminal 100 receives the transmitted image of page 3 and displays it.

In this way, the display images are synchronized and the conference proceeds. This type of mode is called a sharing mode in the sense of sharing materials.

Here, the display mode switching unit 116 of the viewing terminal 100 switches the display mode of the material to either the shared mode or the individual mode based on the operation of the operation unit 140 by the participant. The display mode switching unit 116 is not limited to a direct operation that instructs to switch the display mode, but also automatically cancels the sharing mode when the conditions specified in the sharing mode cancellation condition table T6 shown in FIG. 22 are satisfied. to switch the display mode to individual mode and set it. In the sharing mode cancellation condition table T6 shown in FIG. 22, for example, 1) in the sharing mode, when a document is shared and displayed on the screen of the display unit 230 and a participant is executing a text editing function described below; 2) In the sharing mode, when the document is being shared and displayed on the screen of the display unit 230 and the participant is executing the handwritten memo function described below, the presenter 3) the participant switched pages during the sharing mode; 4) the participant selected something other than the shared material during the sharing mode. ing.

Note that the participant can easily switch the display mode to the sharing mode by pressing the presenter sharing button SB located at the upper right corner of the window shown in FIG. 23A. In response to the press of the presenter sharing button SB, the display mode switching unit 116 switches the display mode to the sharing mode and, as shown in FIG. 23B, changes the material displayed in the display area in the window from the material C. Switch to document A that the presenter is referring to. Here, as shown in FIG. 23A, an icon MI is displayed in the notation of "Material C" indicating that the presenter is not currently referring to the material, while as shown in FIG. 23B, "Material A" An icon MS is displayed in the notation to indicate that the material is currently being referred to by the presenter. Thereby, the participants can easily confirm whether the material displayed in the window is the material currently being explained by the presenter.

The presenter can also cancel the display sharing mode.
In this case, the presenter clicks a "temporarily suspend sharing mode" button (not shown) located on the presenter screen. This operation is transmitted to the material distribution device 200 by the operation information notification unit 111. When the presenter operation information notification unit 215 of the material distribution device 200 is notified that the "share mode temporary suspension" button has been operated, it will no longer notify the presenter operation information to the viewing terminals 100 of conference participants other than the presenter. . This turns off the display synchronization state. Therefore, the presenter can check the materials while appropriately changing the materials and pages without being aware of the conference participants.

When the presenter operates a "share mode" button (not shown) on the screen, the material distribution device 200 is notified that the "share mode" button has been operated. In this case, the presenter operation information notification unit 215 of the material distribution device 200 transmits operation information that requests the display of the same display screen as the display screen of the presenter's viewing terminal 100 at that time, for viewing by conference participants other than the presenter. It is transmitted to the terminal 100. The viewing terminals 100 of conference participants other than the presenter transmit the notified operation information to the material distribution device 200. In response to the operation information, the material distribution device 200 transmits the same screen as the screen being displayed by the presenter's viewing terminal 100 to each viewing terminal 100. This will restore synchronization. Thereafter, the presenter operation information notification unit 215 of the material distribution device 200 resumes the operation of notifying all viewing terminals 100 of the operation information from the presenter's viewing terminal 100.

Note that different types of icons may be displayed on the image displayed by the viewing terminal 100 so that conference participants can easily determine whether the presenter is maintaining the sharing mode or discontinuing the sharing mode. good. For example, a light blue icon may be displayed when the presenter is maintaining the sharing mode, and a yellow icon may be displayed when the presenter is suspending the sharing mode.

The operation of such display update processing will be explained with reference to the flowchart of FIG. 29.
When the display control unit 114 of each viewing terminal 100 receives a notification from the material distribution device 200 that the presenter will update the display, the display control unit 114 starts the display update process shown in FIG. 29 .
First, the display control unit 114 determines whether a display mode switching button on the screen has been operated (step S21). If it is determined that the display mode switching button has been operated (step S21: Yes), the display mode switching unit 116 switches the display mode between the shared mode and the individual mode (step S22). Subsequently, it is determined whether the display mode after switching is the shared mode (step S23).

In the case of the shared mode (step S23: Yes), it is determined whether the current operating state of the viewing terminal 100 matches the conditions registered in the shared mode cancellation condition table T6 (step S24).

If they do not match (step S24: No), the material acquisition unit 112 transmits a request corresponding to the operation content received from the material distribution device 200 to the material distribution device 200 (step S25). For example, if the presenter instructs to turn the page while displaying page 2 of the document, the document acquisition unit 112 transmits a request for an image of page 3 of the document to the document distribution device 200.

On the other hand, if No in step S23, that is, if the mode is individual mode, the process proceeds to step S26. Further, if it is determined in step S24 that the current operating state corresponds to the conditions registered in the shared mode cancellation condition table T6 (step S24: Yes), the display mode is switched to the individual mode and the process proceeds to step S26.

In step S26, it is determined whether or not the share mode button has been pressed, and if it has not been pressed (step S26: No), the process returns to step S21, and if the share mode button has been pressed (step S26: Yes). , requests the material distribution device 200 to download the image data of the current screen (step S27). Note that if the determination in step S21 is No, step S22 is skipped and the process proceeds to step S23.

In this way, it is possible to participate in a conference by using either the shared mode or the individual mode.

Furthermore, for example, when a participant instructs execution of multi-screen display, the display control unit 114 controls the display unit 130 to simultaneously display different materials on the screen. As shown in FIG. 24A, when a participant presses the display pattern selection icon PSI to instruct multi-screen display in which two types of materials used in the conference are displayed side by side, the display control unit 114 A pull-down menu PM is displayed that lists options for display patterns to be displayed side by side. When the display pattern to be displayed side by side is selected and the material selection icon DSI is pressed by the participant, the display control unit 114 selects the material to be displayed in the left display area RL on the left side of the window as shown in FIG. 24B. Displays a pull-down menu DML listing selectable materials. Until the material to be displayed in the left display area is selected from the pull-down menu DML, the message "Please select the material to be displayed in the left display area" appears below the left display area. Select the material to be displayed in the left display area RL. A message prompting you to do so will be displayed.

Material A, which is referenced by the presenter (during the presentation) and set to share mode, is selected as the material to be displayed in the left display area RL, and after material A is displayed in the left display area RL, the participant When the material selection icon DSI is pressed, the display control unit 114 displays a pull-down menu DMR listing materials that can be selected as materials to be displayed in the right display area RR on the right side of the window, as shown in FIG. 24C. . Until the material to be displayed in the right display area is selected from the pull-down menu DMR, the message "Select the material to be displayed in the right display area" is displayed below the right display area, as in the case of selecting the material to be displayed in the left display area. A message prompting the user to select the material to be displayed in the right display area RR is displayed. When material C is selected as the material to be displayed in the right display area RR, as shown in FIG. 24D, the material C is displayed in the left display area RL, and the selection process in multi-screen display is completed.

The conference participants, including the presenter, can insert notes using text data into each page of each document using the text editing section 115.

When the speech bubble icon COI placed at the top right of the window shown in FIG. 25A is pressed by a participant, the text editing unit 115 displays a text memo window TXW on the right side of the window as shown in FIG. 25B, and displays the text editing function. will be provided to participants. Participants can save things they noticed during the meeting by inputting sentences or the like into the text memo window TXW using a keyboard. The text data input into the text memo window TXW is stored in the storage unit 120 together with the materials.

Furthermore, when the participant presses the page designation bar PB placed at the top of the text memo window TXW shown in FIG. A pull-down menu DM for selecting the display of text data corresponding to is displayed. When "Currently Open Page" is selected in the pull-down menu DM, the text editing unit 115 displays a list of text data created for the currently displayed page. Further, when "all pages" is selected in the pull-down menu DM, the text editing unit 115 displays a list of text data created for all pages, as shown in FIG. 26B. The text editing unit 115 enlarges and displays the text data selected from the list of text data and jump-displays the page.

The conference participants, including the presenter, can insert handwritten notes at any position on each page of each document using the graphics section 117. Specifically, the graphics unit 117 generates vector data of an image drawn by the user using a stylus pen, mouse, etc., such as a handwritten memo. This vector data includes the starting point position, midpoint position, etc. of the drawn line on the document page. ．． ．． This is data expressed by the position of the end point, line color, line thickness, etc. Therefore, a handwritten memo can be written at any position on each page.

A handwritten memo made by the presenter on the material displayed on the viewing terminal 100 is treated as a common handwritten memo, and the vector data thereof is supplied to the material distribution device 200 by the graphics unit 117. The presenter operation information notification unit 215 of the material distribution device 200 transmits this vector data to all viewing terminals 100. The graphics unit 117 of each viewing terminal 100 reproduces the handwritten memo by drawing the vector data received from the material distribution device 200, and displays it superimposed on the currently displayed page. This allows all conference participants to share the presenter's handwritten notes.

On the other hand, handwritten notes made by individual conference participants on the materials displayed on the viewing terminal 100 are unique to that participant. This vector data is drawn and displayed on the self-viewing terminal 100. Further, this vector data is notified to the material distribution device 200. The material distribution device 200 stores the notified vector data in association with the user ID and the material ID. However, it is not transmitted to other viewing terminals 100.

The material distribution device 200 saves the original material, the text memo, and the handwritten memo in separate files at an arbitrary timing such as at the end of the meeting, as shown in FIG.

When there is a request to download materials in file units from any of the viewing terminals 100 after the meeting, the material management unit 213 of the material distribution device 200 downloads the image layer of the original material and the presenter's handwriting. A new file is generated by combining the memo image layer and the user's own handwritten memo image layer, and the user's own text memo file is attached to this file and sent to the viewing terminal 100. Send. The material management section 213 is an example of a composite transmission means.

The display control unit 114 of the viewing terminal 100 that received this displays the received file. In response to a user's operation, the display control unit 114 can switch the display state of three layers for reference, such as a composite image of the original material layer and the presenter's handwritten memo layer.

The bookmark unit 118 performs bookmark registration of any page of the material selected by the participant. The participant displays the bookmark registration list BML shown in FIG. 27B by pressing the bookmark icon BMI placed on the left side of the window shown in FIG. 27A. When a participant clicks on an arbitrary bookmark, the display control unit 114 displays the page corresponding to the clicked bookmark on the display unit 130.

(Guest leaving)
Guests may leave the conference room during the meeting.
In this case, the material management unit 213 determines whether there is any material that has not yet been downloaded by the guest.
If undownloaded materials remain, an inquiry screen such as "There are undownloaded materials remaining. Would you like to download them at a later date?" is displayed.
When the user selects "Download", the user is notified of the URL of the download site and the distribution period. Alternatively, inquire for an e-mail address, write the URL of the download site and the distribution period in the e-mail address, and send it. If the guest accesses the download site and makes a request within the distribution period, the material management unit 213 downloads the requested material file by file. This allows guests who leave midway to obtain materials.

As described above, the material distribution system 1 allows those who have not been able to take the participation procedures in advance to participate in a meeting, and also allows them to obtain materials.

Note that the present invention is not limited to the above embodiments, and various modifications and applications are possible.

For example, in the above embodiment, an example of distributing materials at a "meeting" has been described for ease of understanding, but the event to which materials are distributed may be arbitrary. It can be used in any situation where digital documents are distributed to guest users who do not have a specific account while maintaining a secure relationship.

Furthermore, in the above embodiment, an event (meeting) in the real world and an event (meeting) in the online space are linked, so that the event (meeting) in the real world is advanced while the event in the online space is being advanced. An example was given. The present invention is not limited to this, and may include only online events without involving real-world events. Alternatively, it may be specialized in distributing materials and may be unrelated to the progress of the event.

In the above embodiment, for example, the control program executed by the CPU of the control unit 210 of the material distribution device 200 was stored in the device in advance. However, the present invention is not limited thereto, and the present invention is not limited thereto, but can be implemented by implementing the operating program for executing the various processes described above in an existing general-purpose computer, framework, workstation, etc. It may function as a device equivalent to the material distribution device 200.

The method of providing such a program is arbitrary; for example, it may be stored and distributed on a computer-readable recording medium (flexible disk, CD (Compact Disc)-ROM, DVD (Digital Versatile Disc)-ROM), etc. Alternatively, the program may be stored in a storage on a network such as the Internet, and provided by downloading the program.

Further, when the above processing is executed between an OS (Operating System) and an application program, or by cooperation between the OS and an application program, only the application program may be stored in a recording medium or storage. It is also possible to superimpose a program on a carrier wave and distribute it via a network. For example, the program may be posted on a bulletin board system (BBS) on a network and distributed via the network. Then, the above-described process may be designed to be executed by starting this program and executing it under the control of the OS in the same way as other application programs.

1... Material distribution system, 100... Viewing terminal, 200... Material distribution device

Claims (6)

A material display device that displays meeting materials distributed from a material distribution device to participants of the meeting ,
presenter operation information acquisition means for acquiring presenter operation information indicating the operation content of the material displayed on the presenter material display device by the presenter of the conference ;
Participant operation information acquisition means for acquiring participant operation information indicating the operation content of the participant;
Display means for displaying the material;
A display mode in which the display mode is switched and set based on the presenter operation information and the participant operation information between a shared mode in which the display of the material is synchronized with the presenter material display device and an individual mode in which the display is not synchronized. a switching means;
Display control means for controlling the display of the material by the display means according to the setting of the display mode by the display mode switching means ,
The display mode can also be switched from the presenter material display device,
The display means includes a first icon indicating whether the document is currently being referred to by the presenter, and a second icon indicating whether the sharing mode is maintained on the presenter document display device. Show more icons and
Material display device. The display mode switching means sets the display mode based on whether a sharing mode cancellation condition for canceling the sharing mode is satisfied.
The data display device according to claim 1. further comprising text editing means capable of editing notes for the material using text data;
The data display device according to claim 1 or 2. Further comprising means for registering a bookmark on any page of the material and, by selecting a bookmark, causing the display to jump to a position corresponding to the selected bookmark.
The material display device according to any one of claims 1 to 3. a material distribution device for distributing meeting materials;
a material display device that displays the materials distributed from the material distribution device and is viewed by participants of the conference ;
Equipped with
The data display device includes:
presenter operation information acquisition means for acquiring presenter operation information indicating the operation content of the material displayed on the presenter material display device by the presenter of the conference ;
Participant operation information acquisition means for acquiring participant operation information indicating the operation content of the participant;
Display means for displaying the material;
A display mode in which the display mode is switched and set based on the presenter operation information and the participant operation information between a shared mode in which the display of the material is synchronized with the presenter material display device and an individual mode in which the display is not synchronized. a switching means;
Display control means for controlling the display of the material on the display means according to the setting of the display mode by the display mode switching means ,
The display mode can also be switched from the presenter material display device,
The display means includes a first icon indicating whether the document is currently being referred to by the presenter, and a second icon indicating whether the sharing mode is maintained on the presenter document display device. Show more icons and
Material display system. computer,
presenter operation information acquisition means for acquiring presenter operation information indicating the operation content of the conference material displayed on the presenter material display device by the presenter of the conference ;
participant operation information acquisition means for acquiring participant operation information indicating operation details of the participants of the conference ;
display means for displaying the material;
A display mode in which the display mode is switched and set based on the presenter operation information and the participant operation information between a shared mode in which the display of the material is synchronized with the presenter material display device and an individual mode in which the display is not synchronized. switching means,
functioning as a display control means for controlling the display of the material on the display means according to the setting of the display mode by the display mode switching means ;
The display mode can also be switched from the presenter material display device,
The display means includes a first icon indicating whether the document is currently being referred to by the presenter, and a second icon indicating whether the sharing mode is maintained on the presenter document display device. Show more icons and
program.

Images