JP2015118648A - Information sharing system and display method in information sharing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information sharing system for displaying a plurality of display areas in larger size.SOLUTION: Provided is an information sharing system, configured with a plurality of clients and a server connected to the plurality of clients via a network, for displaying an information sharing operation screen having two or more display areas in the plurality of clients. The plurality of clients have a master terminal and one or more slave terminals capable of communicating with the master terminal. The master terminal communicates with the slave terminals, acquires information relating to the total number of display pixels of the video display devices of the slave terminals, and makes the video output devices of the master terminal and slave terminals display the information sharing operation screen in a span mode. One of the video output devices for displaying two or more display areas is determined, on the basis of a first condition relating to the priority of two or more display areas displayed by the video output devices in which the total number of display pixels is greater and the total number of display pixels of the video output devices of the master terminal or the slave terminals, before the information sharing operation screen is displayed.

Description

  The present invention relates to an information sharing system and the like.

  Patent Document 1 proposes an information sharing system for sharing information among a plurality of clients, such as a distance learning system.

JP 2009-294625 A

  However, since the display is performed by the video output device provided in one terminal in the client, in the information sharing operation screen having a plurality of display areas, each display area is reduced or any one of the display areas is omitted. It is necessary to display the screen.

  Accordingly, an object of the present invention is to provide an information sharing system or a display method for displaying a plurality of display areas on an information sharing operation screen in a large size.

  An information sharing system according to the present invention includes a plurality of clients and a server connected to the plurality of clients via a network, and displays information sharing operation screens having at least two display areas on the plurality of clients. In the shared system, at least one of the plurality of clients includes a parent terminal and one or more child terminals that can communicate with the parent terminal, and the parent terminal communicates with one or more child terminals to communicate with one or more child terminals. Information on the total number of display pixels of the video display device of the terminal is acquired, and the parent terminal displays an information sharing operation screen in the span mode on the video output device of the parent terminal and one or more child terminals, and two or more display areas The first condition relating to the priority order of the display areas to be displayed on the video output device having a large total number of display pixels, and the total display of the video output device of the parent terminal or one or more child terminals. Based on the prime number, the image output apparatus for displaying two or more display regions on determined, display of information sharing operation screen is performed.

  A multi-display environment is constructed using not only the video output device provided in the parent terminal but also the video output device provided in the child terminal in communication with the parent terminal, and each of the display areas on the information sharing operation screen is set. Large display is possible.

  For example, if a tablet terminal or a mobile phone near the parent terminal is used as a child terminal and is brought into communication with the parent terminal, these video display devices can be used for outputting the display area of the information sharing operation screen.

  Since a display area with a high priority can be displayed on a video output device having a large screen mode (a large total number of display pixels), it can be displayed as large as possible.

  Preferably, the server records administrator information related to one or more managers set for each information sharing operation, and an activated display among the two or more display areas via a client to which the manager has logged in. Information about the area is transmitted to a client other than the client logged in by the administrator.

  It becomes possible to notify a person other than the administrator of the display area that the administrator wants to emphasize.

  More preferably, the other client displays the activated display area larger than the other display area.

  By managing the position and size of the display area of other clients, the administrator of the information sharing operation (for example, the subject of the presentation) makes the display area (the activated display area) to be highlighted larger. It becomes possible to tell the display area that the administrator wants to emphasize to a person other than the administrator.

  More preferably, the other client displays the activated display area by replacing the display position with another display area that is displayed larger than the activated display area.

  Preferably, in the display of the information sharing operation screen, the display area having a high priority is displayed on the image output device of the parent terminal and the image output device of the one or more child terminals having a large total number of display pixels. Thus, a video output device that displays two or more display areas is determined.

  More preferably, for each of the two or more display areas, the second condition relating to the screen size to be displayed can be set via the input device of the parent terminal, and is displayed on the video output device based on the second condition. The size of the display area is determined.

  Preferably, the display of the information sharing operation screen is such that the total number of display pixels is smaller than the set minimum display total number of pixels of the video output device of the parent terminal and the video output devices of one or more child terminals. It is done by excluding few things.

  More preferably, the priority and the screen mode corresponding to the minimum display total pixel count or the minimum display total pixel count are set with a predetermined priority order, the minimum display total pixel count or the minimum screen mode as an initial value, It can be changed via the input device of the terminal.

  Preferably, when writing is performed on an information sharing operation screen displayed on one client among a plurality of clients, information on the writing is displayed superimposed on the information sharing operation screen on another client. The information sharing operation screen is a screen that displays information related to the video conference or e-learning.

  Preferably, the information sharing operation screen includes, as display areas, an image display area for displaying moving images or still images, a material display area for displaying presentation materials or spreadsheet materials, and a parent in any of a plurality of clients. A file area that displays the image information contained in a file that is selected and uploaded via the input device of the parent terminal in any of a plurality of clients, and a writing area that displays the characters and images that are input via the input device of the terminal It has a pasting area.

  A display method in an information sharing system according to the present invention includes a plurality of clients and a server connected to the plurality of clients via a network, and displays an information sharing operation screen having at least two display areas on the plurality of clients. In the information sharing system, at least one of the plurality of clients has a parent terminal and one or more child terminals that can communicate with the parent terminal, and the parent terminal communicates with one or more child terminals. An information acquisition step of acquiring information relating to the total number of display pixels of the video display device of one or more child terminals, and the parent terminal displays an information sharing operation screen on the video output device of the parent terminal and one or more child terminals in span mode A display step for displaying the image on the display area, and for two or more display areas, the display area is displayed in a priority order with a video output device having a large total number of display pixels. Information output operation screen after a video output device that displays two or more display areas is determined based on the first condition to be displayed and the total number of display pixels of the video output device of the parent terminal or one or more child terminals. Is displayed.

  As described above, according to the present invention, it is possible to provide an information sharing system or a display method for displaying a plurality of display areas on the information sharing operation screen in a large size.

It is a block diagram of the information sharing system in this embodiment. It is a figure which shows the structure of the parent terminal of a client C5, and four child terminals. It is a figure which shows the example of a login screen (authentication information input screen). It is a figure which shows the example of the menu screen after a user logs in. It is a figure which shows the structure of an information sharing operation | movement screen. It is a figure which shows the example which displayed the information sharing operation | movement screen with the main terminal and four subterminals. It is a figure which shows the example which displayed the information sharing operation | movement screen with the parent terminal. It is a flowchart which shows the procedure display (The layout determination process (Video output device which displays each display area)) which displays an information sharing operation | movement screen. It is a figure which shows the example of the display condition setting screen which sets 1st condition-3rd condition. It is a figure which shows the example which replaced the position which displays a material display area, and the position which displays a file pasting area from the state of FIG. FIG. 7 is a diagram illustrating an example in which a display notifying that a display area activated by an administrator client has been changed is performed from the state of FIG. 6.

  Hereinafter, the present embodiment will be described with reference to the drawings. The information sharing system 1 in this embodiment includes a plurality of clients C1 to C5 and a server (web authentication server) X (see FIG. 1). The number of clients is an example and is not limited to five.

  The information sharing system 1 is an information sharing operation such as a video conference system or a training system in which each user accesses the server X using any of the clients C1 to C5 and logs in, and selects the information on the menu screen after logging in This is a system for executing a conference (video conference) or learning (e-learning (distance learning)) via the Internet network.

  Each of the clients C1 to C5 includes a keyboard, a pointing device, an input device such as a camera and a microphone, a video output device such as a monitor and a projector, another output device such as a speaker and a printer, a control device such as a CPU, and a network connection (Internet And a computer (parent terminal) including a communication device that transmits and receives information to and from other terminals (particularly child terminals).

  Further, at least one of the clients C1 to C5 has one or more computers (child terminals) including a video output device, a control device, and a communication device.

  In this embodiment, the client C5 has a parent terminal (desktop personal computer) and four child terminals (child terminal (1): notebook computer having a video output device with a large screen mode, child terminal (2): screen mode is A configuration including a notebook personal computer having a small video output device, a child terminal (3): a tablet terminal, and a child terminal (4): a mobile phone) will be described (see FIGS. 1 and 2).

  The communication device of the child terminal only needs to have a communication function for transmitting / receiving information to / from other terminals (particularly the parent terminal) using a wireless LAN or Bluetooth (registered trademark), and the communication function via the Internet network is indispensable. is not.

  The server X stores user information including IDs, a storage in which software of the information sharing system 1 (including software related to display layout control and active display area notification control described later) is installed, and the software An ASP (Application Service Provider) server capable of network connection having a control device such as a CPU for executing. The clients C1 to C5 use the browser software to access the server X and operate the software of the information sharing system 1 installed on the server X.

  The user information recorded by the server X includes at least an ID, a password, a user name, and a screen display condition for each user.

  When the user inputs a specific URL and accesses the server X using one parent terminal of the clients C1 to C5, a login screen (authentication information input screen) is displayed (see FIG. 3). When an ID or password is entered on the login screen, the information sharing system 1 is logged in, and the menu screen after login is displayed (see FIG. 4). On the menu screen after logging in, the information sharing operation such as video conference or e-learning is made selectable, and the selected information sharing operation is executed.

  When one of the information sharing operations is selected on the menu screen, an information sharing operation screen 100 such as a video conference or e-learning is displayed on the video output device of the client (parent terminal or child terminal). When writing is performed on the information sharing operation screen displayed on one client, information related to the writing is displayed superimposed on the information sharing operation screen on another client.

  The information sharing operation screen 100 has at least two or more display areas. In this embodiment, the information sharing operation screen 100 will be described as having an image display area 100a, a material display area 100b, a writing area 100c, and a file pasting area 100d as an example. .

  The image display area 100a is an area for displaying a moving image or a still image, such as a face of a user who participates in the same information sharing operation (for example, the same video conference), via a camera provided on the parent terminal of each client. Displays the input image.

  The material display area 100b is an area for displaying materials to be provided to users who participate in the same information sharing operation in information sharing operations such as video conferences and e-learning such as presentation materials and spreadsheet materials.

  The writing area 100c is an area for displaying characters and images input by users participating in the same information sharing operation through the input device of the client's parent terminal used by each user.

  The file pasting area 100d is an area for displaying image information included in a file selected and uploaded by the users participating in the same information sharing operation through the input device of the parent terminal of the client used by each user. Thus, in such a region, a character or image input via the input device may be displayed on the image information. FIG. 5 shows a state in which a character (Yamada) and an image (thick line polygon) surrounding the character are input via the input device on the map information file image selected by the user.

  In addition, other display areas such as a display area 100e used for setting sound quality may be provided (see FIGS. 5 and 7 and omitted in other figures).

  Information sharing operation services such as conferences (video conferences) and learning (e-learning) via the Internet network are provided using information, voice, and the like displayed in these display areas.

  Communication with the parent terminal that performed the login operation (wireless LAN connection completed, remote connection between the parent terminal and the child terminal is permitted by remote desktop etc., and information can be sent and received between the terminals) When there is a child terminal, the information sharing operation screen 100 is displayed using both the video output device of the parent terminal and the video output device of the child terminal (see FIG. 6).

  When there is no parent terminal in communication with the parent terminal that has performed the login operation, the information sharing operation screen 100 is displayed using only the video output device of the parent terminal (see FIG. 7).

  Details of display layout control for displaying the information sharing operation screen 100 using both the parent terminal and the child terminal will be described.

  The control device of the parent terminal requests information transmission regarding the screen mode (total number of display pixels) of the video output device of the child terminal to the child terminal in the communication state, and the control device of the child terminal transmits the information transmission In response to the request, information on the screen mode (total number of display pixels) of the video output device of the child terminal is transmitted to the parent terminal (information acquisition step).

  The parent terminal acquires information regarding the screen mode (total number of display pixels) of the video output device for all of the child terminals that are in a communication state. Further, the parent terminal also acquires information regarding the screen mode (total number of display pixels) of the video output device of the parent terminal itself (see step S11 in FIG. 8).

  Control of the parent terminal based on information on the screen mode (total number of display pixels) of the video output device of the child terminal, information on the screen mode (total number of display pixels) of the video output device of the parent terminal, and screen display conditions The apparatus determines a display layout of the information sharing operation screen 100 (a video output device that displays each display area), and displays the information sharing operation screen 100 on the video display device of the parent terminal or the child terminal based on the determined display layout. A display area is displayed (display process).

Here, the image display conditions will be described.
The screen display condition includes a first condition relating to a priority order of display areas displayed on a video output device having a large screen mode (a large number of total display pixels) among a plurality of display areas displayed on the information sharing operation screen, A second condition related to the screen mode or the number of pixels for displaying the display area and a third condition related to the minimum size (the minimum total number of display pixels or the minimum screen mode) of the video output device used for displaying the information sharing operation screen are included.

  For the first to third conditions, appropriate priorities and screen modes are set as initial values, and the user clicks a screen display condition setting link on the menu screen to display a display condition setting screen (see FIG. 9). ) Is displayed, and the user sets the first condition to the third condition using the input device of the parent terminal. The screen display conditions (first condition to third condition) are recorded in the storage of the server X.

  FIG. 9 shows that the priority order of display on the video output device having a high total number of display pixels as the order of each display area under the first condition is the material display area 100b, the file pasting area 100d, the image display area 100a, and the writing area 100c. The state set in is shown.

  In FIG. 9, as a screen mode for each display area of the second condition, the material display area 100b is set to the WXGA mode (1280 × 800), and the file pasting area 100d is set to the WVGA mode (800 × 480). In the example, the image display area 100a is set to the SVGA mode (800 × 600) and the writing area 100c is set to the VGA mode (640 × 480).

  FIG. 9 shows an example in which, as the third condition, the minimum screen mode (minimum total number of display pixels) that is the minimum size of the video output device used for displaying the information sharing operation screen is set to the QVGA mode (320 × 240). Show.

The display layout determination process (video output device that displays each display area) will be specifically described.
The control device of the parent terminal sets, as the video output device of the parent terminal, the one that satisfies the third condition (the screen mode larger than the minimum size screen mode) among the video output devices of the child terminals in communication state (Refer to step S12 in Fig. 8.) Among the video output devices of the child terminals that are in the communication state, those that do not satisfy the third condition (the screen mode smaller than the minimum size screen mode is the video output device of the parent terminal. And is not used for display area display (excluding video output devices with a small total number of display pixels).

  A span mode multi-display environment is constructed by the video output device of the parent terminal and the video output device of the child terminal set as the video output device of the parent terminal.

  The control device of the parent terminal displays each of the display areas on the video output device under the multi-display environment based on the first condition and the second condition. How to display each display area on which video output device is performed according to the following procedure.

  The control device of the parent terminal sets the number of display areas in which the first condition and the second condition are set (here, the image display area 100a, the material display area 100b, the writing area 100c, and the file pasting area 100d), A comparison is made with the number of video output devices that have constructed a multi-display environment, and it is determined whether or not the number of video output devices is greater than or equal to the number of display areas (see step S13 in FIG. 8).

  If the number of video output devices is greater than the number of display areas, the video output devices are associated with each display area (see step S14 in FIG. 8). If the number of video output devices is smaller than the number of display areas, the process proceeds to step S18 in FIG.

  A display area having a higher order set in the first condition is displayed on a video output apparatus having a larger screen mode (a large total number of display pixels), and a display area having a lower order set in the first condition has a smaller screen mode ( Display on the video output device (the total number of display pixels is small). A display area in which the first condition and the second condition are not set (for example, the display area 100e used for setting sound quality) is displayed in a free area.

  At this time, for each display area, when the screen mode set in the second condition is smaller than the screen mode (total number of display pixels) of the video output device that displays the display area, each display area is The image is displayed on the corresponding video output device in full size (or the screen mode set under the second condition) (see step S15 and step S16 in FIG. 8).

  For each display area, when the screen mode set under the second condition is larger than the screen mode (total number of display pixels) of the video output device that displays the display area, each display loom is The image mode is set smaller than the image mode set under the conditions (for example, the full size is displayed on the corresponding video output device) (see step S15 and step S17 in FIG. 8).

  If the number of video output devices is smaller than the number of display areas, but can be displayed on the video output device in the screen mode of each display area set in the second condition (can be laid out), each display area is supported. Display on the video output device in the screen mode set under the second condition (see step S18 and step S19 in FIG. 8).

  If the number of video output devices is less than the number of display areas and cannot be displayed on the video output device in the screen mode of each display area set in the second condition (cannot be laid out), part or all of the display The area is reduced from the screen mode set under the second condition and displayed on the video output device (see step S18 and step S20 in FIG. 8).

  In both cases of step S19 and step S20, the display mode with a high order set in the first condition (here, the material display area 100b) has a large screen mode set in the second condition (the total number of display pixels is large). Therefore, there is a high possibility that the image is displayed on the video output device having a large screen mode (the total number of display pixels is large).

  Note that FIG. 6 is an example of being excluded from the video output device used for displaying the information sharing operation screen because the video output device has a screen mode smaller than the minimum screen mode of the third condition, or the information sharing operation screen Although it is not excluded from the video output device used for display of information, since each display area of the information sharing operation screen can be displayed using the parent terminal or other child terminals (1) to (3), the information sharing operation As an example in which no screen is displayed, a state in which a video related to the information sharing operation screen is not displayed on the child terminal (4) is shown.

  The display control to the child terminal (transmission of video information displayed on the child terminal) may be sent directly from the parent terminal via the parent terminal communication device and the child terminal communication device. When the communication device of the terminal has a communication function via the Internet network, a form uploaded from the parent terminal via the Internet network may be downloaded by the child terminal via the Internet network.

  In the present embodiment, the above-described display layout control constructs a multi-display environment using not only the video output device provided in the parent terminal but also the video output device provided in the child terminal in communication with the parent terminal. In addition, each of the display areas on the information sharing operation screen can be displayed large.

  For example, if a tablet terminal or a mobile phone near the parent terminal is used as a child terminal and is brought into communication with the parent terminal, these video display devices can be used for outputting the display area of the information sharing operation screen.

  In information sharing operations such as video conferencing and e-learning, multiple presentation areas are used to display presentation materials, display user images, display predetermined files, and display comments. Is required. If the respective display areas are reduced, it is possible to display all of them with only the video output device of the parent terminal, but it becomes difficult to see by the reduced amount (see FIG. 7).

  In this embodiment, without adding a video output device that is wired to the parent terminal, a video output device that is substantially controlled by the parent terminal is added using a child terminal, and the display area is reduced without reducing as much as possible. Large display is possible (see FIG. 6).

  In addition, since a display area having a high priority can be displayed on a video output device having a large screen mode (a large number of total display pixels), it can be displayed as large as possible.

  In information sharing operations such as video conferencing and e-learning, a plurality of display areas are displayed. However, there may be a large difference between what is required to browse detailed information in detail and what is not. For example, the document display area 100b wants to browse even fine character information, but the image display area 100a showing the user's face does not require fine information and only requires a rough image that can understand the user's face. Can be considered. In the present embodiment, for a display area that is required to be able to be browsed to detailed information, the priority is increased in the first condition, and the screen mode in the second condition is increased (the number of display pixels is increased). The display area can be displayed as large as possible by using a displayable video output device.

  In this embodiment, the software for executing the information sharing operation is installed in the storage of the server X and the screen display condition is recorded in the storage of the server X. However, the software is executed in the storage of the parent terminal or the child terminal. Such software may be installed, or screen display conditions may be recorded.

  Also, software that automatically performs settings for the child terminal to be in communication with the parent terminal (setting of communication functions such as wireless LAN and permission for remote connection between the parent terminal and the child terminal). The form may be installed in each of the child terminals.

  In addition, according to the procedure as described above, the control device of the parent terminal displays the information sharing operation screen 100 based on the set display layout, and then the user via the input device of the parent terminal, It may be changed. For each client, the user may manually change the display layout. However, as will be described later, the display layout of another client is changed in accordance with the display layout of the client used by a specific administrator. It may be in a form (active display area notification control).

  Specifically, an administrator is set for each information sharing operation, and the server X records that a specific person among the users is an administrator corresponding to the specific information sharing operation (administrator information). When logged in using the administrator's ID or password and the specific information sharing operation is selected, the client logged in with the administrator's ID or the like in the information sharing operation screen 100 (administrator client) The information related to the display area activated via the input device is sent to the other client displaying the same information sharing operation screen 100 via the server X, and the display activated by the administrator client. The area is displayed larger on other clients.

  For example, in the administrator client, when the file pasting area 100d is clicked and activated via the input device, information indicating that the file pasting area 100d is active in the administrator client is stored in the server. X is transmitted to another client displaying the same information sharing operation screen 100 via X.

  When there is a display area that is displayed larger than the file pasting area 100d in another client (when there is a display area that is displayed in a screen mode larger than the screen mode of the file pasting area 100d), the display area is larger. The display area displayed in the screen mode and the file pasting area 100d are displayed in a state where the display positions are switched.

  When the other client C5 displays each display area in the state of FIG. 6, the display position of the material display area 100b displayed in the largest screen mode and the file pasting area 100d are displayed. The file pasting area 100d is displayed on the parent terminal, and the material display area 100b is displayed on the child terminal (1) (see FIG. 10). When the aspect ratio of the display area to be replaced is different, display in a state in which a non-display area is provided vertically or horizontally and the aspect ratio is maintained, or the display area is expanded or contracted according to the aspect ratio of the position after replacement Is displayed.

  By managing the position and size of the display area of other clients, the administrator of the information sharing operation (for example, the subject of the presentation) makes the display area (the activated display area) to be highlighted larger. It becomes possible to tell the display area that the administrator wants to emphasize to a person other than the administrator. The number of managers set for each information sharing operation is not limited to one, and a plurality of managers may be set.

  As an example of active display area notification control, based on the information about the activated display area transmitted from the administrator client, another client performs control to switch the display position of the activated display area. As described above, a configuration may be adopted in which information indicating that the activated display area has been changed is output to the display device of another client without performing the replacement control (see FIG. 11). For example, the administrator can display the text “The display area activated by the administrator client has changed to“ file pasting area 100d ”” on the display device of another client for a certain period of time. It is possible to notify a person other than the display area that the administrator wants to emphasize.

  Further, in the present embodiment, when the information sharing operation screen is launched, display layout control is performed based on the first condition, and then, when the display area activated via the administrator client is changed, Although the mode of performing the display area notification control has been described, the information sharing operation screen is displayed without performing the display layout control based on the first condition or the like (for example, performing the display layout control without considering the first condition or the like). It may be configured to perform active display area notification control after startup.

DESCRIPTION OF SYMBOLS 1 Information sharing system 100 Information sharing operation screen 100a Image display area 100b Material display area 100c Writing area 100d File pasting area 100e Display area used for setting sound quality C1 to C5 Client X server

Claims (11)

An information sharing system comprising a plurality of clients and a server connected to the plurality of clients via a network, and displaying an information sharing operation screen having at least two display areas on the plurality of clients,
At least one of the plurality of clients has a parent terminal and one or more child terminals that can communicate with the parent terminal,
The parent terminal communicates with the one or more child terminals, obtains information on the total number of display pixels of the video display device of the one or more child terminals;
The parent terminal causes the video output device of the parent terminal and the one or more child terminals to display the information sharing operation screen in a span mode,
For the two or more display areas, a first condition related to the priority order of display areas displayed on a video output device having a large total number of display pixels, and the total number of display pixels of the video output device of the parent terminal or the one or more child terminals The information sharing operation screen is displayed after the video output device that displays the two or more display areas is determined based on the above. The server records administrator information related to one or more administrators set for each information sharing operation,
Of the two or more display areas, information regarding the activated display area is transmitted to another client other than the client logged in by the administrator, via the client logged in by the administrator. The information sharing system according to claim 1.   The information sharing system according to claim 2, wherein the other client displays the activated display area larger than the other display area.   The other client displays the activated display area by replacing the display position with another display area that is displayed larger than the activated display area. The information sharing system according to claim 3.   In the display of the information sharing operation screen, the display area with the higher priority is displayed on the image output device of the parent terminal and the image output device of the one or more child terminals having a larger total number of display pixels. The information sharing system according to claim 1, wherein a video output device that displays the two or more display areas is determined. For each of the two or more display areas, a second condition relating to a screen size to be displayed can be set via the input device of the parent terminal,
6. The information sharing system according to claim 5, wherein a size of the display area displayed on the video output device is determined based on the second condition.   The display of the information sharing operation screen is one in which the total number of display pixels is smaller than the set minimum display total number of pixels among the video output device of the parent terminal and the video output devices of the one or more child terminals The information sharing system according to claim 1, wherein the information sharing system is performed by excluding.   The priority order and the screen mode corresponding to the minimum display total pixel number or the minimum display total pixel number are set with a predetermined priority order, the minimum display total pixel number or the minimum screen mode as an initial value, and the parent mode The information sharing system according to claim 7, wherein the information sharing system can be changed via an input device of a terminal. When writing is performed on the information sharing operation screen displayed on one client among the plurality of clients, information on the writing is displayed superimposed on the information sharing operation screen on another client. And
The information sharing system according to claim 1, wherein the information sharing operation screen is a screen that displays information related to a video conference or e-learning.   The information sharing operation screen includes, as the display area, an image display area for displaying a moving image or a still image, a material display area for displaying a presentation material or a spreadsheet, and a parent terminal in any of the plurality of clients. A writing area for displaying characters and images input via the input device, and a file paste for displaying image information included in the file selected and uploaded via the input device of the parent terminal in any of the plurality of clients. The information sharing system according to claim 1, further comprising an attachment area. A display method in an information sharing system, comprising a plurality of clients and a server connected to the plurality of clients via a network, and displaying an information sharing operation screen having at least two display areas on the plurality of clients. ,
At least one of the plurality of clients has a parent terminal and one or more child terminals that can communicate with the parent terminal,
An information acquisition step in which the parent terminal communicates with the one or more child terminals and acquires information on the total number of display pixels of the video display device of the one or more child terminals;
The parent terminal comprises a display step of displaying the information sharing operation screen in a span mode on the video output device of the parent terminal and the one or more child terminals,
For the two or more display areas, a first condition related to the priority order of display areas displayed on a video output device having a large total number of display pixels, and the total number of display pixels of the video output device of the parent terminal or the one or more child terminals And displaying the information sharing operation screen after determining a video output device that displays the two or more display areas.

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