JP2005149440A - Screen-sharing control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily adjustable display positions and an overlap condition of windows for displaying images from a computer connected to a network, when the images of different application windows to be executed by a plurality of computers are displayed simultaneously on a single shared display. <P>SOLUTION: This screen shared control method is constituted of a procedure for providing other computers with display configuration information expressing the identifier, position, size and display overlap of a window which displays a shard screen on a shared display, a procedure for reducing and drawing window configuration on the shard display from the display configuration information, a procedure for transmitting an input operation to the reduced and drawn display configuration to the shard display as an operation request of the window and a procedure for changing the display configuration of the window of the shard display, on receiving the operation request. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for displaying a window screen of an application executed on a computer on a display of another computer. In particular, the present invention relates to a window screen display control method.

  Many attempts have been made to connect a plurality of computers via a network to improve information sharing and collaborative work in a conference. These are generally called electronic conference systems. In the electronic conference system, in the computer used by the attendees of the conference, the attendees can share the same screen and easily share necessary information on the screen (Patent Document 1 (page 3-4, FIG. 1)). Etc.). In this example, an arbitrarily designated application window is converted into an image and sent to a screen sharing partner.

  Also, instead of sharing the entire screen or a window of any application as an image, the content of the information displayed on the attendee's terminal is controlled in real time among the attendees with a dedicated application, so that the attendees are the same There is also a system for making a meeting or work proceed while viewing information (see Patent Document 2 (second page, FIG. 1), etc.).

  In these systems, all attendees have terminals that can be operated by themselves, and each attendee can freely decide what and how to display on the display of the terminal. For example, in a multi-window environment, it is possible to determine where the shared screen is displayed on the terminal display and which shared screen is displayed at the top. It is also possible for attendees to decide and view information that they want to view without synchronizing with the screen display shared in the ongoing conference.

  On the other hand, in a meeting, it is also common to project a document on a large screen by a projector or the like and share it with attendees of the meeting. In addition, there are projectors that have a function of projecting a screen of a computer connected to the projector by using the network, thereby simplifying connection with a computer having a file to be displayed and improving usability.

JP 2000-99233 A

JP 2000-236329 A

  Since the conventional electronic conference system is based on the premise that all attendees have computer terminals, there is a problem that attendees who do not have terminals cannot participate in information sharing.

  By connecting a terminal of the electronic conference system to a shared display such as a projector and displaying a screen, attendees who do not have the terminal can also view real-time shared information in the meeting. However, there is a problem that an operator who operates a terminal connected to the shared display to control display of the shared screen is required. The attendees of the conference may do this, but this attendee has a special role, so there is a problem that the conference cannot be concentrated or the progress of the conference is hindered.

  In particular, when a plurality of application window images of the attendee's terminal are simultaneously displayed on the shared display, it is necessary to be able to easily adjust the display position and overlapping state of the windows for displaying the images. It is an issue to enable a user of a shared display to easily adjust the window position on the shared display from a terminal that the user has.

  Also, when multiple shared displays that are connected to each other in a remote location display the same shared screen, the window display configuration on those shared displays can be easily adjusted with a single operation. That is also an issue.

  The means for solving the above-mentioned problem is that in addition to the procedure for displaying the image received on the shared display as a remote window when the contents of the window of the application executed on the user's computer are acquired and transmitted to the shared display, The procedure for transmitting the display configuration information representing the identifier, position, size, and overlap of each remote window displayed on the shared display to the user's computer, and the remote window on the shared display from the display configuration information. A procedure for drawing a reduced display configuration, a procedure for sending an input operation to the reduced-drawn display configuration as a remote window operation request to the shared display, and a remote window display on the shared display in response to the operation request The procedure consists of changing the configuration.

  According to the present invention, when images of different application windows executed on a plurality of computers are displayed on one shared display at the same time, the display position and the overlapping state of the windows for displaying the images can be easily adjusted. The user of the shared display can easily adjust the position and overlap of the remote window displayed on the shared display from his / her terminal.

  If the shared display is a large display, a user who does not have a computer for operating the shared display can participate in information sharing.

  Furthermore, the same shared screen can be displayed on a plurality of shared displays, and the window display configuration on these shared displays can be easily adjusted by a single operation. Thereby, screen sharing can be easily realized between remote sites.

  Embodiments of the present invention will be described with reference to the drawings. In the present embodiment, the contents of the window selected by the computer held by the meeting attendee are displayed as one window (referred to as a remote window) on the shared display shared by the meeting attendee, and the remote is displayed. A method of controlling the positions and overlapping states of these remote windows from the attendee's computer when a plurality of windows are displayed on the shared display will be described. Hereinafter, displaying the contents of the window on the remote window is referred to as screen sharing.

(Example 1)
FIG. 1 is a diagram showing an outline of the first embodiment of the present invention. Reference numeral 100 denotes a shared display. The shared display 100 includes a large display 101 that displays an image and a shared computer 102 that controls the display. Windows 103 and 104 are displayed on the shared display 100. Although a display is used here, an apparatus such as a projector may be used. The computer 102 is a general computer including a CPU, a memory, and an external storage. In this example, the computer 102 is specialized for controlling the shared display 100, and is therefore embedded in the shared display 100. There is no input device other than the network 130. The network adapter 105 is an adapter for connection to the network 130, and the display adapter is an adapter for connection to the shared display 100.

  The computer 110 is a general computer, and a user executes an application. 111 displays a window of an application running on the computer 110 on the display 115. The computer 110 and the shared display 100 are connected via a network 130 via a network adapter 113. Similarly to the computer 110, the computer 120 is a general computer (another computer), and a user executes an application. 121 displays a window of an application running on the computer 120 on the display 125. Further, the computer 120 and the shared display 100 are connected by a network 130 via a network adapter.

  The windows 103 and 104 displayed on the display 101 are remote windows that display the same contents as the windows 111 and 121 displayed on the computers 110 and 120. The computers 110 and 120 have means and procedures for acquiring the contents of the window designated by the user as an image and transmitting the image to the shared display 100 via the network 130. The computer 102 also has means and procedures for receiving window images from the network 130 and displaying them on the display 101 as remote windows.

  A window 112 of the computer 110 is a control window, and indicates an application that controls display of a remote window of the display 101. This window 112 indicates the position of the remote window displayed on the display 101 and the degree of overlap with a rectangle drawn in the window 112. The user of the computer 110 can change the position and overlap of the remote window of the display 101 through an operation of changing the position and overlap of the rectangle.

  FIG. 1 also shows the configuration of the computer 110. The computer 110 includes a CPU, a memory, an external storage device, a display adapter, a network adapter, an input device, and the like. Reference numerals 114 and 124 are displayed in consideration of a keyboard which is one of input devices. In the first embodiment, the computer 102 does not have an input device, but may have it.

  FIG. 2 is a diagram illustrating a software configuration of the first embodiment. First, the software configuration of the computer 102 of the shared display 100 will be described. In the computer 102, a Web server program 203 is executed. The Web server program 203 receives an HTTP request from a computer connected to the network 130 and activates another processing module (program).

  The window image reception program 201 receives the window image transmitted by the computers 110 and 120 and calls the remote window control program 202 so as to display the received image on the display 101.

  The remote window control program 202 is appropriately called from the window image reception program 201 and the Web server program 203, and performs processing such as drawing and moving of a remote window. In addition, for remote windows displayed on the display 101, a remote window table 400 that records transmission source information, remote window display position, size, and overlapping order, and a client table 410 that records connected computers are held. . An example of the structure of each table is shown in FIGS. 4A and 4B.

  When the position information of the remote window is updated, the remote window control program 202 transmits the update to the computers 110 and 120 connected to the network 130 to notify it.

  These are loaded into the memory of the computer 102 and executed by the CPU.

  Next, the software configuration of the computer 110 will be described. The same applies to the computer 120. The computer 110 can execute a plurality of applications simultaneously, and each application can display data and work contents in each window.

  The sharing control program 212 implements procedures such as designation of a window for screen sharing, stop of screen sharing, and designation of a shared display to be connected. The user can set screen sharing through a UI (user interface) provided by the sharing control program 212. Further, the sharing control program 212 holds an identifier representing a window designated to share the screen in the shared window table 215. An example of the shared window table 215 is shown in FIG. 4C.

  The image generation program 211 acquires the contents of the window recorded in the shared window table 215 as an image, and transmits it to the Web server program 203 executed on the connected shared display 100.

  The window control program 213 of the computer 110 provides a UI for remote window control, communicates with the Web server program 203 to send a remote window control instruction, acquires information about the remote window from the remote window control program 202, and so on. Implement the process.

  These are loaded into the memory of the computer 110 and executed by the CPU.

  Next, the operation of software will be described. FIG. 3 is a processing flow from when the sharing control program 212 of the computer 110 acquires an image of a window designated to share a screen, transmits it to the shared display 100, and the shared display 100 draws a corresponding remote window. is there. Hereinafter, it demonstrates according to a flow.

  The user of the computer 110 designates the shared display 100 to be connected through the UI of the sharing control program 212. For example, by specifying a host name or network address set in the computer 102.

  In response to this designation, the sharing control program 212 transmits an HTTP request expressing the connection to the Web server program 203. The Web server program 203 passes the connection request request to the remote window control program 202, and the control program 202 registers the connection request source address in the client table 410.

  Next, the user designates a window for screen sharing from the window displayed by the application being executed on the computer 110 by the UI of the sharing control program 212. The sharing control program 212 registers the identifier of the window designated for screen sharing in the shared window table 215.

  The image generation program 211 of the computer 110 acquires the window identifier registered in the shared window table 215 of the sharing control program 212 (step 301). Furthermore, the contents of the window corresponding to these identifiers are acquired as an image (step 302) and transmitted to the connected shared display 100 (step 303). This transmission is in the form of an HTTP request to the Web server program 203 executed by the computer 102 of the shared display 100. This includes an image transmission instruction, the host name of the computer 110, the ID of the window from which the image was acquired, and the generated image itself. The image generation program 211 performs the processing of steps 302 to 303 for all windows registered in the shared window table 215. Further, the image generation program 211 repeats the processing from step 301 to step 3030 at predetermined time intervals, and transmits the latest window image.

  When there is no corresponding window for the identifier stored in the shared window table 215, the identifier is simply deleted from the table (not described in the processing flow). In order to stop the screen sharing of the window during the screen sharing, the corresponding identifier may be deleted from the shared window table 215. At this time, a request to discard the corresponding remote window may be transmitted to the Web server program 203.

  On the other hand, the Web server program 203 of the control computer 102 receives the HTTP request transmitted from the computer 110. Upon receiving this request, the server program 203 calls the window image reception program 201, and the reception program 201 acquires the image, the transmission source, and the window identifier included in the HTTP request (step 304). The window image reception program 201 calls the remote window control program 202 and instructs to display the received image.

  The remote window control program 202 searches the remote window table 400 and checks whether a remote window corresponding to the window is assigned from the transmission source host name and window identifier included in the HTTP request (step 305).

  If a remote window has already been assigned, the identifier of the window for displaying the window image is acquired from the table 400, and the received image is drawn (step 308).

  If no remote window is assigned, a remote window is created. The display position of the window may be arbitrarily determined. Furthermore, the transmission source host name, transmission source window identifier, generated window identifier, display position, size, and Z order included in the HTTP request are recorded in the remote window table 400 shown in FIG. 4A. The Z order is a positive integer value indicating the degree of overlapping of windows displayed on the display 101. Here, it is assumed that the smaller numerical value is drawn on the front surface of the display 101 (step 306).

  Further, the remote window control program 202 displays the source host name, the window ID at the source, the window position and size on the shared display, and the Z order information described in the remote window table 400. It is transmitted to the window control program 213 of the computer registered in the client table 410 shown in 4B (step 307). For example, the table 400 is transmitted after being converted into an XML representation of the contents of the table. In step 308, the received image is displayed on the window.

  An example of data transmitted by the remote window control program 202 in step 307 is shown in FIG. The portion surrounded by the window tag corresponds to each remote window of the remote window table 400 shown in FIG. 4A, and each element in the window tag is the source host name, the source window identifier, and the display 102. Corresponds to the position, size, and Z-order of the window. FIG. 5 specifically shows data examples of the two windows in FIG. 4A.

  With the above procedure, the remote window 103 of the window 111 of the computer 110 is drawn. Similarly, the remote window 104 of the window 121 of the computer 120 can be drawn.

  Next, a procedure in which the window control program 213 of the computer 110 receives the XML data in FIG. 5 and draws a rectangle corresponding to the remote window on the window 112 will be described. FIG. 6A shows the processing flow, and FIG. 6B shows an example of a rectangle displayed corresponding to the remote window.

  First, the XML document of FIG. 5 is converted into an internal table (step 601). The table has almost the same data structure as the remote window table 400 and does not include a display window ID. Hereinafter, this table is referred to as a rectangular table. This table is sorted according to the Z order value, and rearranged so that the row of the remote window displayed in the forefront becomes the first row of the table (step 602).

  Next, the window coordinates and window size in the table are reduced and converted. For example, the table is updated to a value obtained by dividing the coordinate, the window width, and the height by 8 (step 603). Finally, in accordance with the numerical value obtained in step 603, rectangles are drawn in the window 112 in order from the window having the largest Z-order value (step 604). That is, drawing is performed from a rectangle corresponding to the rearmost window on the display 102.

  A window 112 shown in FIG. 6B is an example of drawing according to steps 601 to 604. The numerical value in the rectangle drawn in the window indicates a Z order value indicating the overlap of the remote windows on the display 102. In the above processing, rectangles are drawn in the order of 3, 2, 1 in the Z order. The Z order itself is not actually drawn.

  When the user needs to change the overlapping state and position of the rectangles displayed in the window 112, the user can change the display state of the remote window on the display 102 by the operation described below. Next, this procedure will be described.

  First, the user moves the cursor to a rectangle in the window 112 corresponding to the remote window to be operated and clicks with the mouse. As a result, the window control program 213 starts the remote window operation. This process is shown in the process flow of FIG.

  First, the window control program 213 refers to the rectangle table, and obtains information on the foremost rectangle drawn at the position where the mouse is clicked (step 701). If there is no such rectangle (step 702), the window operation is terminated.

  If there is a rectangle, a window operation menu (pop-up menu) is displayed at the position where the mouse is clicked (step 703). At this time, the selected window may be highlighted so that the user can easily understand. The menu includes items for displaying and moving a window corresponding to the rectangle selected by the user in the foreground. The user selects a window operation from this menu.

  When the user selects “display in front” from the menu (step 704), an HTTP request for displaying the window corresponding to the rectangle in front is transmitted to the web server program 203 (step 706). . This request includes the source host name and source window ID recorded in the rectangular table.

  When the user selects “move” (step 705), the user is caused to determine a new window position. For example, a rectangle indicating the selected rectangle is drawn in accordance with the movement of the mouse, and the user determines the position of the new rectangle. The window control program 213 converts the position coordinates of the new rectangle into the coordinate system of the display 102 (step 707). For example, the coordinate value, width, and height of the window are multiplied by eight. Here, the reason why the table is multiplied by 8 is that the table is updated with the value obtained by dividing the coordinates and the width and height of the window by 8 in step 603 described above. Finally, an HTTP request for instructing window movement is transmitted to the Web server program 203. The HTTP request includes the source host name, ID, and new window coordinates of the window to be operated.

  FIG. 8 shows a processing flow of the computer 102 that controls the display of the remote window. The flow shown in FIG. 8 is a process when a foreground display is requested, but the same applies to the case of window movement.

  First, the instructed remote window control process is performed (step 801). In this example, a window corresponding to the transmission source host name and window ID included in the HTTP request is searched from the remote window table 400, and the window corresponding to the display window ID is displayed in the foreground. If window movement is requested, the specified window is moved to the coordinates included in the HTTP request.

  Next, the information in the remote window table 400 is updated for each window displayed on the display 102. In this example, the Z order value of each window is acquired and the table 400 is updated (step 802). In the case of window movement, the window coordinates of the target window may be updated.

  After the update, the information in the remote window table 400 is transmitted to the host registered in the client table 410 (step 803).

  As described above, a plurality of window windows of different applications executed by a plurality of computers can be simultaneously displayed on the shared display. Furthermore, it is possible to freely control the display position and overlapping state of each remote window displayed on the shared display from a computer connected to the shared display 100.

  Accordingly, it is possible to easily display a plurality of remote windows on the shared display, display a necessary window on the front as appropriate, or display a plurality of windows side by side, thereby increasing the efficiency of information sharing.

  In the first embodiment, the operation on the remote window is changed and moved in the overlapping order, but the size can be changed. This is because the window control program 213 has an operation and processing procedure for changing the size of the rectangle corresponding to the remote window, and a procedure for transmitting the requested size to the Web server program 203. The remote window control program 202 sets the requested size to the requested size. In addition, a procedure for changing the size of the remote window and drawing the window image in accordance with the size may be installed.

  In the first embodiment, when the status of the remote window changes, all the computers connected to the shared display are notified of the contents of the remote window table 400, but this need not be done. For example, the window control program 213 may make an inquiry to the remote window control program 202 as necessary. In this case, the client table 410 becomes unnecessary.

  In the first embodiment, in order to connect to the shared display 100, the user is requested to input the host name and address. However, the shared display can be automatically discovered. For example, if the shared control program 212 sends a broadcast for discovering a shared display to the network 130 and the remote window control program 202 sends the network address of the computer 102 to the shared control program 212 in response, the shared display 100 Connection to can be simplified.

  In the first embodiment, the display destination for screen sharing is the shared display 100, but it may be displayed on a normal terminal such as the computer 120. In this case, for example, the computer 120 can have a procedure for requesting the remote window control program 202 to transfer the image of the window to be displayed and a procedure for the remote window control program 202 to transfer the requested window image to the request source. It ’s fine.

(Example 2)
Next, a second embodiment of the present invention will be described. In the second embodiment, there are a plurality of shared displays, and each displays a remote window with the same display configuration. Here, the same display configuration indicates that the position, size, and Z order value of the remote window are the same. This corresponds to a case where conferences are held at a plurality of sites and information is shared while viewing the same screen between them. FIG. 9 is a diagram showing the configuration of the second embodiment of the present invention. FIG. 9 is a diagram focusing on the software shown in FIG. 2 of the first embodiment while integrating and simplifying the display of FIG. 1 and FIG. 2 of the first embodiment.

  The computer 110 and the shared display 100 are connected to the network 130. On the other hand, the computer 120 and the shared display 900 are connected to the network 930. This indicates that the shared display and the calculator are at two different sites. The network 130 and the network 930 are not the same network, but are connected by a network 920 so that they can communicate with each other. As in FIG. 1, computers of people participating in the conference are connected to the network 130 and the network 930 of each site while watching the shared display 100 and the shared display 900.

  The computer 102 of the shared display 100 includes a display group table 911 and a screen sharing server flag 912 as new components in addition to the software described in FIG. These are included in the jurisdiction of the remote window control program 202 as in the remote window table 400 and the client table 410 of the first embodiment. Other functions of the software are the same as described in FIG. The software configuration of the shared display 900 is the same as that of the first embodiment of the present invention.

  The shared display 100 in which the screen sharing server flag 912 is set operates as a screen sharing server, and comprehensively manages other shared displays 900 connected to the server. All requests related to the remote window operation are transferred to the shared display 100 once set as the screen sharing server, and the server re-transfers to each shared display. The shared display 900 using the same screen sharing server displays a remote window with the same display configuration.

  In the second embodiment, the shared displays 100 and 900 display a remote window having the same display configuration, and the remote window control of either computer connected to the network enables the remote windows of both shared displays to be controlled. Indicates. A description will be given assuming that the shared display 100 becomes a server.

  First, the data structure will be described. The display group table 911 illustrated in FIG. 9 is a table in which the shared display 100 operating as a server holds the address of the shared display 900 that displays a remote window with the same display configuration. It does not include its own address.

  In the second embodiment, the sharing control program 212 includes, in addition to a procedure for specifying the shared display 900 to be connected, a procedure for setting the connected shared display 100 as a screen sharing server (server start procedure), and a connected shared display. The screen sharing server is designated (server setting procedure).

  Next, a procedure for executing the shared display 100 as a screen sharing server and connecting the shared display 900 will be described.

  The user of the computer 110 connects to the shared display 100 by the shared display designation procedure of the shared control program 212 and calls the server start procedure of the shared control program 212. The sharing control program 212 transmits an HTTP request to set the screen sharing server flag 912 in the Web server program 203. In response to this, the remote window control program 202 of the computer 102 sets the screen sharing server flag 912. This operation need only be performed once in the entire system.

  On the other hand, the user of the computer 120 sets to connect to the shared display 900 by the shared display designation procedure, and sets the screen sharing server to which the shared display 900 is connected to the shared display 100 by the server designation procedure. In response to this setting, the remote window control program 202 of the shared display 900 transmits a request for connection to the shared display 100. The remote window control program 202 of the shared display 100 registers the shared display 900 in the display group table 911. This setting procedure only needs to be performed once for each shared display.

  Next, processing when a window image is received from the image generation program 211 of the computer 110 or the computer 120 will be described with reference to FIG.

  As in the first embodiment, the window image reception program 201 receives an image (step 304) and instructs the remote window control program 202 to display a screen. The remote window control program 202 checks the screen sharing server flag 912 to check whether it is running as a server (step 1001). If so, the received image information is transferred to the shared display registered in the display group table 911 (step 1002), and the remote window drawing from step 305 is performed.

  If it is not a server, it is checked whether a screen sharing server is set (step 1003). If it is set, the window image receiving program 201 retransmits the received image information to the shared display set as the screen sharing server, in this case, the shared display 900 (step 1004), and ends. The drawing of the remote window on the shared display is performed when an image is transferred from the server.

  When the shared display not operating as the server receives the image transferred by the server in step 1002, the remote window drawing process starting from step 305 of the first embodiment is performed. The image transmission of the computers 110 and 120 and the image transfer of the screen sharing server can be distinguished by different commands included in the HTTP request.

  With regard to changing and moving the overlapping order of remote windows, the same remote window display configuration can be realized on all shared displays based on the same idea as described above. Specifically, before step 801 in FIG. 8, it is checked whether or not it is a server. If it is a server, the instruction is transferred to the shared display registered in the display group table 911, and then the instruction is issued. Implement remote window control. If it is not a server, it forwards instructions to the server. When an instruction transferred from the Web server program 203 is received, remote window control may be performed.

  As described above, the same remote window display configuration can be realized on a plurality of shared displays. According to the above, since all the computers connected to the shared display do not need to know about other shared displays that are sharing the screen, the remote window can be easily shared by a plurality of shared displays.

(Example 3)
Next, Embodiment 3 of the present invention will be described. In the second embodiment, each shared display that does not become a screen sharing server must be set to connect to each shared display, and then the screen sharing server must be set. In the third embodiment, a procedure for directly setting the shared display other than the server is provided.

  The sharing control program 212 of the computer 110 is provided with a procedure for setting a screen sharing server for an arbitrary shared display. In this procedure, an HTTP request for setting a screen sharing server is transmitted to any specified shared display. The remote window control program of the shared display that has received this request sets the screen sharing server program included in the HTTP request as the Web server program 203.

  According to the above, if only one of the users configures the shared display for screen sharing, other participants can participate in screen sharing by simply connecting to one shared display. . That is, in order for all users to participate in screen sharing, it is not necessary to know the information of all related shared displays, and the setting for that is not necessary, further improving convenience.

The figure which shows the outline | summary of Example 1 of this invention. FIG. 3 is a diagram illustrating a software configuration according to the first embodiment. The figure which shows the processing flow until the share control program 212 of the computer 110 acquires the image of the window designated to share a screen, transmits to the shared display 100, and draws the corresponding remote window by the shared display 100. FIG. 4 is a diagram illustrating an example of a data structure of a remote window table 400 according to the first embodiment. 6 is a diagram illustrating an example of a data structure of a client table 410 according to the first embodiment. FIG. FIG. 6 is a diagram illustrating an example of a data structure of a shared window table 215 according to the first embodiment. FIG. 6 is a diagram illustrating an example of data transmitted by the remote window control program 202 according to the first embodiment. FIG. 6 is a diagram illustrating a processing flow of a procedure according to the first embodiment that receives the XML data of FIG. 5 and draws a rectangle corresponding to the remote window on the window 112; FIG. 5 is a diagram illustrating an example of a rectangle displayed corresponding to a remote window according to the first embodiment. The figure which shows the processing flow of the remote window operation which the window control program 213 of Example 1 performs. FIG. 6 is a diagram showing a flow of processing for controlling display of a remote window according to the first embodiment. The figure which shows the structure of Example 2 of this invention. The figure which shows the processing flow of Example 2 when a window image is received from the image generation program 211. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Shared display apparatus, 101 ... Display, 102 ... Computer, 103, 104 ... Remote window, 105 ... Network adapter, 110, 120 ... Computer, 111, 121 ... Application window, 112 ... Remote window control window, 113 ... Network adapter, 130 ... Network, 201 ... Window image receiving unit, 202 ... Remote window control program, 203 ... Web server, 211 ... Image generation unit, 212 ... Share control program, 213 ... Window control program, 301 to 308 ... Screen Shared processing steps, 400... Remote window table, 410... Client table, 500... XML example for exchanging remote window information, 601 to 604 Processing steps for rendering the UI of the window control program 213, 701 to 708 ... UI processing steps of the window control program 213, 801 to 803 ... Processing steps of the remote window control program 202, 900 ... Shared display device, 911 ... Display Group table, 912 ... screen sharing server flag, 930 ... network, 1001 to 1004 ... processing steps of the remote window control program 213.

Claims (9)

  A plurality of computers each having a display for displaying a window of an application being executed (application window), and contents of application windows (application windows) connected to the plurality of computers via a network and executed by the plurality of computers A screen control method capable of displaying on a shared display of a system comprising a shared computer that controls display of a plurality of windows (remote windows) of the shared display that receives and displays the shared display, wherein the shared computer displays on the shared display Information about the application windows of the plurality of computers and information about the plurality of computers, and one of the plurality of computers is a shared data of the plurality of remote windows displayed on the shared display. Screen sharing control method is characterized in that the controllable display configuration on the spray.   2. The screen sharing control method according to claim 1, further comprising means for providing, to one of the plurality of computers, information related to an application window of the plurality of computers displayed on the shared display by the shared computer. A characteristic screen sharing control method.   3. The screen sharing control method according to claim 2, wherein one of the plurality of computers acquires information on an application window of the plurality of computers displayed on the shared display from the shared computer, and the shared display Drawing a diagram representing the display configuration of the above remote window on its own display as a control window, interpreting an input operation of a computer user for the control window as an operation request for the remote window on the shared display, A screen sharing control method, comprising: transmitting the operation request to the shared computer; and when the shared computer receives the operation request, the display configuration of a remote window is changed in response to the operation request.   4. The screen sharing control method according to claim 2 or 3, wherein the information about the application windows of the plurality of computers displayed on the shared display indicates the position, width, height, and overlapping of the remote windows on the shared display of each remote window. A screen sharing control method comprising: a value, a value for identifying a computer in which an original application window exists, and information including a value for identifying an application window on the computer.   4. The screen sharing control method according to claim 3, wherein the user's input operation includes changing a position and an overlap of a remote window displayed on the shared display.   6. The screen sharing control method according to claim 3, wherein the display of the remote window of the computer is drawn on the own display as a control window, the diagram representing the display configuration of the remote window on the shared display. The figure representing the structure is a rectangle with the remote window reduced to an arbitrary scale, the drawing position of the rectangle is determined so that the content of the entire display is reduced, and the overlap of the rectangle corresponds to the overlap of the remote window A screen sharing control method characterized by drawing a rectangle so as to do.   A plurality of computers each having a display for displaying a window of an application being executed (application window), and contents of application windows (application windows) connected to the plurality of computers via a network and executed by the plurality of computers A plurality of computers and a shared computer in a system comprising a shared computer that controls display of a plurality of windows (remote window) of a shared display that receives and displays The shared computers of each group are connected by a network, and the shared computers in each group are information on the application windows of the plurality of computers displayed on the shared display and information on the plurality of computers. And one of the plurality of computers can control a display configuration on the shared display of the plurality of remote windows displayed on the shared display, and the one shared computer of the group and the group One of the plurality of computers is capable of controlling a display configuration on a shared display of a plurality of remote windows displayed on the shared display of each group.   A plurality of computers each having a display for displaying a window of an application being executed (application window), and contents of application windows (application windows) connected to the plurality of computers via a network and executed by the plurality of computers A screen control method capable of displaying on a shared display of a system comprising a shared computer that controls display of a plurality of windows (remote windows) of the shared display that receives and displays the shared display, wherein the shared computer displays on the shared display Information about the application windows of the plurality of computers and information about the plurality of computers, and one of the plurality of computers is a shared data of the plurality of remote windows displayed on the shared display. Electronic conference system, characterized in that it is realized by a computer system that executes a controllable and the screen sharing control method of the display structure of the spray. 9. The electronic conference system according to claim 8, wherein one of the plurality of computers acquires information on an application window of the plurality of computers displayed on the shared display from the shared computer, and Drawing a diagram representing the display configuration of the remote window on the own display as a control window, interpreting a computer user input operation on the control window as an operation request for the remote window on the shared display, Realized by a computer system that executes a screen sharing control method that transmits an operation request to the shared computer and the shared computer changes a display configuration of a remote window in response to the operation request when the operation request is received. An electronic conference system characterized by

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