JP2016057709A - Electronic conference system, and display control method and program in electronic conference system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve efficiency and convenience of communication between terminals in a bidirectional real-time communication.SOLUTION: A video chat system includes a supporter terminal 10A and a worker terminal 10C that can transmit/receive data to/from the supporter terminal 10A. The worker terminal 10C transmits a screen switching completion notice representing kinds of a switched screen to the supporter terminal 10A when switching an image displayed on the worker terminal 10C. The supporter terminal 10A displays the kind of the image displayed on the worker terminal 10C in a distinguishable manner on the basis of the received screen switching completion notice.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an electronic conference system for sharing information between a plurality of information terminals in real time, for example.

Conventionally, an electronic conference system using a plurality of computer terminals is known. For example, an education service system is disclosed in which an instructor and a student take lessons by interactive communication while sharing multimedia teaching materials such as video images via a communication line (see, for example, Patent Document 1).
Further, in such an electronic conference system, a control image including a captured video image of the user, a captured video image of the other party, the other party image, and an image organizer are displayed on the display as independent windows (for example, patents). Reference 2).

JP 2007-11389 A JP 2007-116527 A

In an electronic conference system, a plurality of types of images such as moving images, still images, and text data are displayed on the screens of terminals connected to each other via a communication line. Each user talks with other users while watching the terminal screen. For example, a worker (user) who is remote can make a meeting with a supporter (user) while looking at the screen of the terminal while working at the work site, thereby improving the efficiency of the work and the meeting.
At this time, a main display area is provided on the display screen of each terminal, and a target image is displayed in the main display area. The image displayed in the main display area is data shared between terminals, for example, a whiteboard that can display camera video, text data, and data in various file formats. When a user of one terminal has a meeting with a user of another terminal, the screen in the main display area is appropriately switched.

However, the user of each terminal cannot grasp what type of image is displayed on the screen of another terminal. For example, when a user of one terminal is talking while looking at a whiteboard image, the user of another terminal who is the other party of the conversation is watching a non-whiteboard image (for example, a camera image) , One terminal user does not know. For this reason, the content of the sound from one terminal and the display content of the other terminal that works according to the content of the sound do not match, resulting in inconvenience that communication between users cannot be performed well.
Therefore, an object of the present invention is to provide an electronic conference system, a display control method in the electronic conference system, and a program that improve the efficiency and convenience of communication between terminals.

Hereinafter, a plurality of modes will be described as means for solving the problems. These aspects can be arbitrarily combined as necessary.
An electronic conference system according to an aspect of the present invention includes a first terminal and a second terminal capable of transmitting and receiving data to and from the first terminal. When switching the image displayed on the second terminal, the second terminal transmits a first switching signal indicating the type of the switched image to the first terminal. Based on the received first switching signal, the first terminal displays the type of image displayed on the second terminal so as to be identifiable.
Here, since the user of the first terminal can immediately grasp which image the user of the other terminal is viewing, the efficiency and convenience of communication are improved.
The second terminal may transmit the first switching signal to the first terminal when the image on the main display screen is switched among the images displayed on the second terminal.
In addition, the first terminal transmits a second switching signal for switching the display screen of the second terminal to the second terminal. When the second terminal receives the second switching signal, the first terminal displays the display screen on the second screen. The image may be switched to the type of image designated by the second switching signal.
Further, the first terminal transmits a second switching signal for switching the main display screen of the second terminal to the second terminal. When the second terminal receives the second switching signal, the main terminal displays the main display screen. May be switched to the type of image designated by the second switching signal.
The first terminal and the second terminal may transmit / receive element data constituting an image via WebSocket.
There may be a plurality of first terminals. In this case, when the second terminal switches the image displayed on the second terminal, the second terminal transmits a first switching signal indicating the type of the switched image to the plurality of first terminals. Based on the received first switching signal, the first terminal displays the type of image displayed on the second terminal so as to be identifiable.

A display control method according to another aspect of the present invention is a display control method in an electronic conference system using a first terminal and a second terminal capable of transmitting and receiving data to and from the first terminal. In this method, when switching the image displayed on the second terminal, the first switching signal indicating the type of the switched image is transmitted from the second terminal to the first terminal, and in the first terminal, Based on the received first switching signal, the type of image displayed on the second terminal is displayed in an identifiable manner.
A display control program according to still another aspect of the present invention is a display control program in an electronic conference system using a first terminal and a second terminal capable of transmitting / receiving data to / from the first terminal. When switching the image displayed on the second terminal, the program transmits a first switching signal indicating the type of the switched image from the second terminal to the first terminal. Based on the received first switching signal, the type of image displayed on the second terminal is displayed in an identifiable manner.

  The present invention improves the efficiency and convenience of communication between terminals in bidirectional real-time communication.

1 is a schematic configuration diagram of an electronic conference system according to Embodiment 1. FIG. The schematic block diagram of the terminal which comprises an electronic conference system. The schematic block diagram of the server which comprises an electronic conference system. The figure which shows the example of a screen display of the display of a terminal. The sequence diagram of the screen switching operation | movement by an electronic conference system. The figure which simplifies and shows the screen of the display of a terminal. The figure which simplifies and shows the screen of the display of a terminal. The figure which simplifies and shows the screen of the display of a terminal. FIG. 10 is a sequence diagram of a screen switching operation by the electronic conference system according to Embodiment 2.

Hereinafter, embodiments will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed descriptions of already well-known matters and repeated descriptions for substantially the same configuration may be omitted. This is to avoid the following description from becoming unnecessarily redundant and to facilitate understanding by those skilled in the art.
The inventor provides the accompanying drawings and the following description in order for those skilled in the art to fully understand the present disclosure, and is not intended to limit the subject matter described in the claims. Absent.

(Embodiment 1)
[1-1. Constitution]
[1-1-1. System configuration]
FIG. 1 shows a schematic configuration of a video chat system 1 (an example of an electronic conference system) according to the present embodiment. The video chat system 1 shares information between a plurality of information terminals, and realizes real-time communication using, for example, video, audio, and text in real time.
In the following example, communication between a terminal (worker terminal) used by a worker at a factory work site and a terminal (supporter terminal) used by a supporter supporting the work is taken as an example. However, this is just an example of use, and the present invention is not limited to this example.

The video chat system 1 includes a plurality of terminals 10 and a server 20 connected to these terminals 10. The terminal 10 and the server 20 are connected via a network (for example, WAN, LAN, Internet). Further, between the terminals 10, video and audio are transmitted and received between browsers not via the server 20 using WebRTC or the like.
The plurality of terminals 10 include a supporter terminal 10A (an example of a first terminal), a supporter terminal 10B, and a worker terminal 10C (an example of a second terminal). The supporter terminals 10A and 10B are terminals used by the supporter. The supporter supports the worker who is remote. On the other hand, the worker terminal 10C is a terminal used by the worker. The worker works while receiving support from a remote supporter.
Note that the number of terminals 10 entering a room is not limited to 3, and may be 2 or less or 4 or more. Further, the number of supporter terminals 10A and 10B and the number of worker terminals 10C may be more or less than the illustrated example.

[1-1-2. Device configuration]
FIG. 2 shows a schematic configuration of each terminal 10. Each terminal 10 is a computer device having a display such as a personal computer (PC), a tablet terminal, a smart phone, or a wearable device (smart glasses, smart watch, head mounted display). The terminal 10 includes a controller 11, a RAM 12, a ROM 13, a graphic controller 14, a display 15, an input / output unit 16, and a communication unit 17, and is further connected to a storage device 18.
The controller 11 executes processing by the terminal 10 according to a predetermined program. The controller 11 is connected to each unit by a bus 19 and controls and executes the operation of each unit.

The RAM 12 is a so-called work memory. The predetermined program executed by the controller 11 is expanded in the RAM 12. The ROM 13 is a memory that stores a program and data when the terminal 10 is activated.
The graphic controller 14 generates image data to be displayed on the display 15 and controls the display operation of the display 15.

The display 15 is, for example, a liquid crystal panel or an organic EL panel that provides a screen 150 (FIG. 4) that displays image data generated by the graphic controller 14.
The display 15 may include a touch panel as an input device described later. The touch panel inputs information by detecting the contact of the finger of the operator with a predetermined detection circuit.
The input / output unit 16 is a connection interface between the input device or output device and the terminal 10. The input devices are, for example, a mouse 161, a keyboard 162, a camera 163 that captures an image, and a microphone 165. The output device is, for example, a speaker 164 that outputs sound.

The communication unit 17 is a communication circuit that enables communication with a network or a personal computer. The communication unit 17 may be wired or wireless. Various data such as video, audio, and text data are transmitted / received to / from the server 20 and other terminals 10 via the communication unit 17.
The bus 19 is a signal line that connects the components of the terminal 10 to each other and enables transmission and reception of signals.
The storage device 18 includes, for example, a magnetic tape, a CD, an optical disk, a hard disk, a DVD, and a flash memory, and stores a computer program and transmission / reception data.

[1-1-3. Server configuration]
FIG. 3 shows a schematic configuration of the server 20. The server 20 is a computer device, and includes a controller 21, a RAM 22, a ROM 23, and a communication unit 27, and is further connected to a storage device 28.
The controller 21 executes processing by the server 20 according to a predetermined program. The controller 21 is connected to each unit by a bus 29, and controls and executes the operation of each unit.
The RAM 22 is a so-called work memory. The predetermined program executed by the controller 21 is expanded in the RAM 22. The ROM 23 is a memory that stores a program and data when the server 20 is started up.

The communication unit 27 is a communication circuit that enables communication with a network or a personal computer. The controller 21 transmits and receives various data such as video, audio, and text data to and from each terminal 10 via the communication unit 17.
The bus 29 is a signal line that connects the components of the server 20 to each other and enables transmission and reception of signals.
The storage device 28 includes, for example, a magnetic tape, a hard disk, and a flash memory, and stores computer programs and transmission / reception data.

  In the illustrated example, the server 20 is shown alone, but is not limited thereto. The server 20 may be composed of a plurality of devices. For example, the server 20 may be configured from a Web server, an ICE server, and a WebSocket server. The Web server transmits / receives HTML data to / from each terminal 10. The ICE server (STUN / TURN server) realizes bidirectional real-time IP communication of audio and video between the terminals 10. The STUN server has the function of teaching the outside network address to the terminal, and the TURN server has the function of relaying communication when direct (P2P) communication is not possible, thereby enabling P2P communication. .

[1-1-4. screen structure]
FIG. 4 shows the configuration of the screen 150 displayed on the display 15 of each terminal 10. A screen 150 is a screen displayed during an electronic conference executed by the video chat system 1. The screen 150 is generated by the graphic controller 14 described above and displayed on the display 15. The screen 150 mainly includes a main display area 151, a group display area 152, an operation button display area 153, and a group screen icon display area 154.
The main display area 151 is a screen for displaying information related to the terminal 10, and displays, for example, any type of screen among a camera screen, a chat screen, and a whiteboard screen.

The camera screen displays an image captured by the camera 163 connected to the terminal 10 and acquires the image by an image capturing operation (for example, pan, tilt, zoom) of the camera by a user operation. The chat screen displays text data input to the terminal 10 by each user in real time, thereby realizing communication by text chat between users. The whiteboard screen displays character information or image information input by the user in a predetermined frame (for example, an image organizer frame) on the screen.
The image displayed in the main display area 151 can be switched by the operation of each terminal user. The main display area 151 is configured to have a certain size (resolution) so that the user can easily grasp information displayed.

The group display area 152 includes a plurality of display sections 152A to 152D. Each screen frame displays each screen of the terminal that is currently participating in the conference (hereinafter also referred to as entering the room). The display section 152A is a screen of the terminal 10 (in this example, the supporter terminal 10A). The display sections 152B, 152C, and 152D are screens of other connected terminals 10. In the illustrated example, a maximum of four screens of the connected terminal 10 are displayed. However, the number may be smaller or larger depending on the number of terminals that can participate in the electronic conference. In the illustrated example, it is assumed that the terminal corresponding to the display section 152D has not entered the room.
The operation button display area 153 displays buttons and icons for inputting operation instructions of the terminal 10. As shown in FIG. 4, the operation button display area 153 includes a presenter button 1531 for acquiring a presenter authority to be described later, and a screen switch button 1532 for issuing a screen switching instruction to another terminal 10 to be described later. indicate.

The group screen icon display area 154 displays an icon for displaying the type of the image displayed on the screen of each terminal entering the room in an identifiable manner. Specifically, the group screen icon display area 154 includes a presenter icon 1541 indicating that the presenter has authority, a camera video icon 1542 indicating that the main display area 151 is a camera screen, and the main display area 151 indicating chat. A text chat icon (hereinafter referred to as a TC icon) 1543 that indicates a screen and a whiteboard icon (hereinafter referred to as a WB icon) 1544 that indicate that the main display area 151 is a whiteboard are displayed. The group screen icon display area 154 also displays the user name (-user) and affiliation name (-Group) of each terminal.
In the illustrated example, all group screen icons are displayed for ease of explanation, but these icons are displayed only on the screen of the terminal entering the room.
The icon that displays the image type in an identifiable manner is not limited to that shown in the figure, and may be a symbol, a number, or another design.

[1-2. Operation]
With reference to FIGS. 5 to 8, the operation of the video chat system 1 according to the present embodiment will be described focusing on the screen switching operation between the terminals 10.
First, a brief explanation will be given. In the video chat system 1, each terminal 10 performs connection (establishment of a session) with the server 20. Specifically, the user performs a login operation to the server 20 from a predetermined login screen. At this time, for example, various information such as a user ID, a password, and a role (supporter or worker) are input. After receiving the user authentication notification from the server 20, each terminal 10 selects a room (conference) to join from a room list displayed on the screen 150. When each terminal 10 selects a room to enter, entry into the room is completed, and communication with other terminals that have entered the room becomes possible. Thereafter, the screen 150 changes to the initial screen (FIG. 4) of the video chat system 1. The initial screen may be a different screen depending on whether the participating user is a supporter or a worker.

Next, the operation of FIG. 5 will be described. FIG. 5 shows an operation example in which the supporter terminal 10A switches the screen of the worker terminal 10C.
S101: The supporter terminal 10A acquires the authority of the presenter. Specifically, when the user A of the supporter terminal 10A selects the presenter button 1531 shown in FIG. 6A, the supporter terminal 10A requests the authority of the presenter from the server 20. The server 20 determines whether or not the authority of the presenter can be acquired. If the authority of the presenter can be acquired, the server 20 grants the authority of the presenter to the supporter terminal 10A.

The case where the server 20 does not permit the presenter authority is, for example, a case where the presenter authority is requested from the worker terminal when the presenter authority is permitted only to the supporter terminal.
In the supporter terminal 10A that has acquired the presenter authority, as shown in FIG. 6B, the supporter terminal 10A has the presenter authority for the display section 152A of the group screen display area corresponding to the supporter terminal 10A. A presenter icon 1541 indicating that the user is currently operating is displayed.

S <b> 102: The supporter terminal 10 </ b> A transmits a screen switching instruction for the worker terminal 10 </ b> C to the server 20.
Specifically, the user A of the supporter terminal 10A selects the screen switching button 1532 shown in FIG. Then, as illustrated in FIG. 7A, a dialog 155 that prompts the user to select a terminal (user) that is a screen switching target is displayed on the screen 150. In this example, it is assumed that there are three users who are entering the room, that is, the user B of the support terminal 10B and the user C of the worker terminal 10C in addition to the user A. User A selects a user from among them.

When the user A selects one of the users (in this example, the user C), a dialog 156 that prompts the user to select the type of image to be switched is displayed on the screen 150 as shown in FIG. Here, the type of the image is any one of the above-described camera screen, chat screen, and whiteboard screen. In this example, the screen of the worker terminal 10C is a chat screen, and it is switched to a whiteboard screen. User A selects the whiteboard screen in dialog 156.
Based on the above selection operation, the supporter terminal 10 </ b> A generates a screen switching instruction (an example of a second switching signal) and transmits the screen switching instruction to the server 20. Here, the screen switching instruction includes the ID of the terminal that is the screen switching target (here, the ID of the worker terminal 10C) and information that specifies the type of screen to be switched (here, the whiteboard screen).

S103: The server 20 transmits a screen switching instruction to the worker terminal 10C based on the screen switching instruction.
S104: The worker terminal 10C switches the main display area 151 from the chat screen to the whiteboard screen.

S105: The worker terminal 10C transmits a notification (screen switching completion notification; an example of a first switching signal) notifying that the screen switching is completed to the server 20. The screen switching completion notification includes the ID of the screen switching target terminal (here, the ID of the worker terminal 10C) and information for specifying the type of the switched image (here, the whiteboard screen).
S106: The server 20 transmits a screen switching completion notification, which is a notification notifying that the screen switching of the worker terminal 10C has been completed, to the supporter terminal 10B, which is one of the other terminals entering the room.

S107: The supporter terminal 10B changes the icon display corresponding to the screen of the worker terminal 10C in the group display area 152 displayed on the screen 150 of the supporter terminal 10B based on the screen switching completion notification. Specifically, the TC icon 1543 (FIGS. 6A and 6B) is changed to the WB icon 1544 (FIG. 8).
S108: At the same time, the server 20 similarly transmits a screen switching completion notification to the supporter terminal 10A.

S109: The supporter terminal 10A changes the icon display corresponding to the screen of the worker terminal 10C in the group display area 152 displayed on the screen 150 of the supporter terminal 10A based on the screen switching completion notification. Specifically, the TC icon 1543 (FIGS. 6A and 6B) is changed to the WB icon 1544 (FIG. 8).
In FIG. 5, it is assumed that the processes surrounded by the dotted line 100 (S106 to S107, S108 to S109) are simultaneously performed in parallel.

[1-3. Effect etc.]
The video chat system 1 according to the present embodiment includes a supporter terminal 10A and a worker terminal 10C capable of transmitting / receiving data to / from the supporter terminal 10A, and the worker terminal 10C is displayed on the worker terminal 10C. In the case of switching an image being displayed, a screen switching completion notification is transmitted to the supporter terminal 10A, and the supporter terminal 10A determines the type of image displayed on the worker terminal 10C based on the received screen switching completion notification. Display identifiable.
For this reason, in the supporter terminal 10A, the user A can immediately grasp which image (a camera screen, a chat screen, or a whiteboard screen) a user of another terminal is viewing. The efficiency and convenience of communication can be improved.

Furthermore, in the video chat system 1 according to the present embodiment, when the worker terminal 10C switches the image of the main display screen (the screen of the main display area 151) among the images displayed on the worker terminal 10C. Then, a screen switching completion notification is transmitted to the supporter terminal 10A.
For this reason, in the supporter terminal 10A, the user A can immediately grasp which image is viewed on the main screen among the screens viewed by users of other terminals. In addition, convenience can be further improved.

In the video chat system 1 according to the present embodiment, the supporter terminal 10A further transmits a screen switching instruction for switching the main display screen of the worker terminal 10C to the worker terminal 10C, and the worker terminal 10C receives the screen switching instruction. Is received, the main display screen is switched to the type of image designated by the screen switching instruction.
For this reason, in the supporter terminal 10 </ b> A, the user A can directly change the image of the main screen viewed by the user of the other terminal. Therefore, when the user C joins the conference while working, even if the terminal cannot be operated immediately, that is, the screen cannot be switched, the user A can switch the main display screen. . Therefore, the efficiency and convenience of communication can be further improved.

(Embodiment 2)
In the embodiment, the transmission of the screen switching completion notification from the worker terminal to the server is executed after the worker terminal performs the screen switching by the screen switching instruction from the supporter terminal and the server. However, the transmission of the screen switching completion notification from the worker terminal to the server may be executed after the worker terminal performs screen switching spontaneously (without receiving a screen switching instruction).
Hereinafter, the video chat system according to Embodiment 2 will be described.
[2-1. Constitution]
The configuration of the video chat system according to the present embodiment is the same as that of the video chat system 1 (FIGS. 1 to 4) according to the first embodiment. Therefore, it demonstrates using these figures and code | symbols as needed.

[2-2. Operation]
With reference to FIG. 9, operation | movement of the video chat system 1 which concerns on this embodiment is demonstrated centering on the screen switching operation | movement of another terminal.
In the video chat system 1, each terminal is connected to the server 20 and enters a predetermined room, as in the first embodiment. Thereafter, when the screen of another terminal is switched, the operation shown in FIG. 9 is performed.
S201: A screen switching operation is performed on the worker terminal 10C. This switching process is executed by the operation of the user C.

S202: When the screen switching operation in S201 is completed, the worker terminal 10C transmits a notification (screen switching completion notification; an example of a first switching signal) to notify the server 20 that the screen switching has been completed. The screen switching completion notification includes the ID of the screen switching target terminal (here, the ID of the worker terminal 10C) and information for specifying the type of the switched image.
S203: The server 20 transmits a screen switching completion notification that is a notification notifying that the screen switching of the worker terminal 10C has been completed to the supporter terminal 10B, which is one of the other terminals entering the room.

S204: Upon receiving the notification of S203, the supporter terminal 10B changes the icon display corresponding to the screen of the worker terminal 10C in the group display area 152 displayed on the screen 150 of the supporter terminal 10B. Specifically, the TC icon 1543 (FIGS. 6A and 6B) is changed to the WB icon 1544 (FIG. 8).
S205: At the same time, the server 20 similarly transmits a screen switching completion notification to the supporter terminal 10A.

S206: Upon receiving the notification in S205, the supporter terminal 10A changes the icon display corresponding to the screen of the worker terminal 10C in the group display area 152 displayed on the screen 150 of the supporter terminal 10A. Specifically, the TC icon 1543 (FIGS. 6A and 6B) is changed to the WB icon 1544 (FIG. 8).
In FIG. 9, it is assumed that the processes surrounded by the dotted line 200 (S203 to S204, S205 to S206) are simultaneously performed in parallel.

[2-3. Effect etc.]
In the video chat system 1 according to the present embodiment, even if the worker terminal 10C performs a screen switching operation spontaneously without receiving a screen switching instruction, it is one terminal among the other terminals 10A and 10B. The other terminals 10A and 10B notify the switching of the screen of 10C, and display the image type of the screen displayed by the one terminal 10C on their screens in response to the notification.
For this reason, since the user can grasp in real time which image is viewed on the main screen among the screens viewed by users of other terminals, the efficiency and convenience of communication can be improved. it can.

(Common contents of the embodiment)
The first embodiment and the second embodiment have the following configurations and functions in common.
An electronic conference system (for example, video chat system 1) includes a first terminal (for example, supporter terminal 10A) and a second terminal (for example, worker terminal 10C) capable of transmitting and receiving data to and from the first terminal. And comprising.
When switching the image displayed on the second terminal, the second terminal transmits a first switching signal indicating the type of the switched image to the first terminal (for example, S105 in FIG. 5: Screen switching completion notification, S202 in FIG. 9: Screen switching completion notification).
Based on the received first switching signal, the first terminal displays the type of image displayed on the second terminal in an identifiable manner (for example, S109 in FIG. 5: display screen icon of the worker terminal 10C) Switching, S206 in FIG. 9: Display screen icon switching of worker terminal 10C).
Here, since the user of the first terminal can immediately grasp which image the user of the other terminal is viewing, the efficiency and convenience of communication are improved.

(Other embodiments)
As described above, Embodiments 1 and 2 have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to an embodiment in which changes, replacements, additions, omissions, and the like are appropriately performed. In addition, it is possible to combine the components and functions described in the first and second embodiments to form a new embodiment.
Therefore, other embodiments will be exemplified below.

[1]
In the above embodiment, the video chat system 1 includes the plurality of terminals 10 and the server 20, but is not limited thereto. Without providing the server 20, any one or a plurality of terminals 10 may have the function of the server.

[2]
Moreover, in the said embodiment, although the camera screen, the chat screen, and the whiteboard screen were mentioned as a classification of the image to switch, it is not limited to this. You may enable selection of the image which concerns on another classification.

[3]
In the above embodiment, the presenter authority has been described as the authority to switch the screen of another terminal, but is not limited to this. The terminal 10 having the presenter authority may include an authority to change the whiteboard screen shared among the terminals 10, for example. In this case, the image on the screen can be deleted, changed, and additionally written only by operating the terminal 10 having the presenter authority.

[4]
Further, the execution order of the processes (FIGS. 5 and 9) in the above embodiment is not necessarily limited to the description of the above embodiment, and the execution order may be changed without departing from the gist of the invention. It can be done.

[5]
The present invention is not limited to being implemented in the form of an electronic conference system. A display control method executed by the electronic conference system, a computer program executed by the video chat system 1, and a computer-readable recording medium recording such a program are included in the scope of the present invention. Here, examples of the computer-readable recording medium include a flexible disk, a hard disk, a CD-ROM, an MO, a DVD, a DVD-ROM, a DVD-RAM, a BD (Blu-ray (registered trademark) Disc), and a semiconductor memory. Can be mentioned.
The computer program is not limited to the one recorded on the recording medium, and may be transmitted via a telecommunication line, a wireless or wired communication line, or a network represented by the Internet.

  The present invention can be used as an electronic conference system or the like that can execute bidirectional real communication.

1 video chat system 10 terminal 10A supporter terminal 10B supporter terminal 10C worker terminal 11 controller 12 RAM
13 ROM
14 graphic controller 15 display 16 input / output unit 17 communication unit 18 storage device 19 bus 20 server 21 controller 22 RAM
23 ROM
27 Communication Unit 28 Storage Device 29 Bus 150 Screen 151 Main Display Area 152 Group Display Area 153 Operation Button Display Area 154 Group Screen Icon Display Area

Claims (8)

A first terminal;
A second terminal capable of transmitting and receiving data to and from the first terminal;
With
When switching the image displayed on the second terminal, the second terminal transmits a first switching signal indicating the type of the switched image to the first terminal,
The first terminal displays the type of image displayed on the second terminal in an identifiable manner based on the received first switching signal.
Electronic conference system. The second terminal transmits the first switching signal to the first terminal when the image on the main display screen is switched among the images displayed on the second terminal.
The electronic conference system according to claim 1. The first terminal transmits a second switching signal for switching a display screen of the second terminal to the second terminal;
When the second terminal receives the second switching signal, the second terminal switches the display screen to an image of a type specified by the second switching signal.
The electronic conference system according to claim 1. The first terminal transmits a second switching signal for switching a main display screen of the second terminal to the second terminal;
When the second terminal receives the second switching signal, the second terminal switches the main display screen to an image of a type specified by the second switching signal.
The electronic conference system according to claim 2. The first terminal and the second terminal transmit and receive element data constituting an image via a WebSocket.
The electronic conference system according to claim 1. A plurality of the first terminals;
When switching the image displayed on the second terminal, the second terminal transmits a first switching signal indicating the type of the switched image to the plurality of first terminals,
The plurality of first terminals display the type of image displayed on the second terminal in an identifiable manner based on the received first switching signal.
The electronic conference system according to claim 1. A display control method in an electronic conference system using a first terminal and a second terminal capable of transmitting and receiving data to and from the first terminal,
When switching the image displayed on the second terminal, a first switching signal indicating the type of the switched image is transmitted from the second terminal to the first terminal,
In the first terminal, based on the received first switching signal, the type of image displayed on the second terminal is displayed in an identifiable manner.
Display control method. A display control program in an electronic conference system using a first terminal and a second terminal capable of transmitting and receiving data to and from the first terminal,
When switching the image displayed on the second terminal, a first switching signal indicating the type of the switched image is transmitted from the second terminal to the first terminal,
In the first terminal, based on the received first switching signal, the type of image displayed on the second terminal is displayed in an identifiable manner.
Display control program.

Images