JP2007156800A - Business support system and drawing correction method using the same - Google Patents

Abstract

The present invention provides a business support system and a drawing correction method using the business support system that enable not only to provide shared information and services but also to achieve closer communication between users.
A business support system comprising a server system 10 for providing shared information and services necessary for business execution, a plurality of client terminals 20 connected to the server system via a network, and a remote access management server 30. It is. The server system includes an authentication unit that determines the legitimacy of a user based on authentication information received from a client terminal or the like. When the remote access management server receives a remote access processing request from each client terminal, the remote access management server checks the validity of the user to the server system, and when the validity of both client terminals is confirmed. And means for executing a relay process for data exchanged between both client terminals.
[Selection] Figure 2

Description

  The present invention relates to a business support system that provides shared information and services necessary for business execution, and a drawing correction method using the business support system.

For example, when a plurality of companies participate and perform a business, it is necessary to share various information for the efficiency of the business. In such a case, an ASP (Application Service Provider) or the like is used to open a dedicated portal site for the related parties so that the related parties can easily access the shared information and services necessary for business execution via the Internet. In addition, building a system is widely performed (see, for example, Patent Document 1).
According to such a system, users can receive the necessary information and services wherever there is an environment where the Internet can be used, and perform their business smoothly using those information and services. can do. Further, by using e-mails, electronic bulletin boards, telephones, faxes, and the like, it is possible to collaborate and proceed with work while communicating between users who are engaged in the same work even if they are located at a distance from each other.
JP 2004-334395 A

However, in the communication means such as e-mail described above, if the content is relatively simple, it is possible to accurately convey the will of the person to the other party. If the content to be communicated to the other party becomes somewhat complicated, such as when dealing with the other party, there is a concern that the above communication means alone will not allow the other party to communicate his / her will and cause rework, etc. was there.
In other words, in order to improve the efficiency of business, it is not sufficient to simply share information, and it is necessary to enable closer communication between users so that such information can be used effectively. is there.

  The present invention has been made in view of such circumstances, and not only simply provides information and services to be shared, but also a business support system that enables closer communication between users and uses the same. An object of the present invention is to provide a method for correcting a drawing.

  The business support system according to the first aspect of the present invention includes a server system for providing shared information and services necessary for performing business, and a plurality of client terminals connected to the server system via a network. In the business support system, the client terminal on the remote access side among the plurality of client terminals is the first client terminal, the client terminal on the remote access side is the second client terminal, and the first client terminal is A remote access management server that executes authentication processing and data relay processing for remote access to the second client terminal, and the server system receives user authentication information from the remote access management server or each client terminal; When Authentication means for determining the legitimacy of the user based on the certificate information, the remote access management server, when receiving a remote access processing request from each client terminal, the user authentication information of each client terminal Is sent to the server system, and when the legitimacy of the users of both the first client terminal and the second client terminal is confirmed, the first client Remote access control means for allowing a terminal to remotely access the second client terminal and executing a relay process of data exchanged between the first client terminal and the second client terminal It is characterized by.

Here, the above services include, for example, services provided by business systems such as core systems and sales systems, and various services provided by groupware (electronic conference room, e-mail, workflow management, schedule management, Document library). The business system includes a business system in which processing is performed in the server system, a business system in which processing is performed in a computer other than the server system, and cooperation between the server system and another computer. Also includes business systems where processing is performed.
The user authentication information includes, for example, a combination of user identification information (user ID) and a password. One-time password (random number) that changes at a predetermined cycle, client terminal identification information, etc. It is also possible to add.

  According to a second aspect of the present invention, in the business support system according to the first aspect, the remote access control means is configured such that a user of the second client terminal is a client terminal that has made a remote access processing request. A client terminal that selects the same Web page as the selected Web page is recognized as the first client terminal that is a communication partner of the second client terminal.

  According to a third aspect of the present invention, in the business support system according to the first or second aspect, the remote access control means confirms the legitimacy of the users of both the first client terminal and the second client terminal. Later, when a confirmation message created by the first client terminal is transferred from the first client terminal to the second client terminal, and then a confirmation response is received from the second client terminal, The relay processing of data exchanged between the first client terminal and the second client terminal is started.

  According to a fourth aspect of the present invention, in the business support system according to any one of the first to third aspects, the second client terminal performs a process of transmitting image data to the remote access management server. The one client terminal performs processing for transmitting the input data to the remote access management server, and the remote access management server sends the image data received from the second client terminal to the first client terminal. A process of transferring the input data received from the client terminal to the second client terminal is performed.

  According to a fifth aspect of the present invention, in the business support system according to the fourth aspect, the second client terminal captures an image of a desktop image of the second client terminal and uses the image as the image data for the remote control. While performing processing to transmit to the access management server, the first client terminal performs processing to restore the image image received from the remote access management server and display the desktop image of the second client terminal. It is a feature.

  A drawing correction method according to the present invention described in claim 6 is a drawing correction method using the business support system according to claim 5, wherein the user of the first client terminal is a first user, With the second client terminal user as the second user, the second user creates a drawing using CAD software, and stores the created CAD drawing data in the storage device of the second client terminal. A step in which each user makes an authentication request to the server system by inputting authentication information to each client terminal, and each user sends an authentication request to the remote access management server from each client terminal. In response to the remote access processing request, the first user or the second user sends a request to the second client terminal. The CAD software is activated to display the CAD drawing on the desktop of the second client terminal, and the first user can remotely operate the desktop of the second client terminal by the remote operation from the first client terminal. Performing a process of correcting the CAD drawing above or a process of giving a correction instruction to the second user while referring to the CAD drawing on the desktop of the second client terminal. It is characterized by having.

  According to the present invention, it is possible not only to provide shared information and services necessary for performance of business, but also to achieve closer communication between users using remote access. For example, a drawing created by CAD Even if the content to be communicated to the other party is somewhat complicated, such as when a correction instruction is given to the plotter, the content can be accurately and quickly communicated to the other party, preventing rework from occurring. Can do. Therefore, it is possible to improve work efficiency and shorten working hours.

  FIG. 1 is a schematic configuration diagram showing an embodiment of a business support system according to the present invention. This business support system is schematically configured by a server system 10, a plurality of client terminals 20, and a remote access management server 30 connected to each other via a network 40 such as a LAN (Local Area Network) or the Internet. The client terminal 20 is installed in each business base (domestic and overseas).

  The server system 10 includes a plurality of computers (for example, a Web server, an application server, a database management server, a fire, etc.) having a CPU (Central Processing Unit), a RAM (Random Access Memory), a storage device, an input device, a display device, a communication device, and the like. The computers are connected to each other via a network such as a LAN.

  When this server system 10 receives user authentication information (for example, user ID, password, etc.) from the remote access management server 30 or each client terminal 20, the server system 10 determines the legitimacy of the user based on the authentication information. A function for executing various business processes in response to a request from the client terminal 20, a function for outputting the processing results as a file (HTML file) in a predetermined data format, and these files Is transmitted to the client terminal 20.

  The server system 10 also includes various databases including an authentication information DB (internal authentication DB, external authentication DB) and user information DB. User authentication information (for example, user ID, password, etc.) is stored in the authentication information DB, and user attribute information (for example, name, company, title, department, user) is stored in the user information DB. And the like are stored in a state associated with the user identification information (user ID).

  The client terminal 20 is configured by a known computer having a CPU, a RAM, a storage device, an input device, a display device, a communication device, and the like. In addition, a Web camera and a headset are connected to the client terminal 20.

  The storage device of the client terminal 20 receives various processing programs executed by the CPU (for example, a Web browser, CAD software, etc.), a storage area for storing control data, etc., received from the server system 10 or the remote access management server 30. It has a storage area for storing data, drawing data created by CAD software, and the like.

  Further, the CPU of the client terminal 20 reads and executes various processing programs stored in the storage device, thereby transmitting input data input from the input device to the server system 10 or from the server system 10. A process of receiving various data (HTML file, image data, audio data, etc.) and outputting the data to a display device or a speaker is executed.

Further, the CPU of the client terminal 20 transmits input data (such as keystrokes and mouse click information) to the remote access management server 30 when remotely accessing other client terminals, or images from the remote access management server 30. A process of receiving data and displaying the desktop image of the other client terminal on its own display device from the image data is executed.
On the other hand, when remotely accessed by another client terminal, the CPU of the client terminal 20 captures a desktop image and transmits the image as the image data to the remote access management server 30 or remote access management. The input data of the other client terminal is received from the server 30 and various processes are executed based on the input data.

The remote access management server 30 is configured by a known computer having a CPU, a RAM, a storage device, an input device, a display device, a communication device, and the like.
When receiving the remote access processing request from each client terminal 20, the CPU of the remote access management server 30 transmits the authentication information of the user of each client terminal 20 to the server system 10 to verify the validity of the user. When the legitimacy of the users of both of the two client terminals 20 for which the remote access processing request has been confirmed and one client terminal 20 (first client terminal) Permits remote access to the other client terminal 20 (second client terminal) and exchanges data between the two client terminals 20 (image data of the second client terminal, input data of the first client terminal, etc.) A function of executing relay processing (remote access control means). These functions are given when the CPU of the remote access management server 30 reads and executes various application programs stored in the storage device.

Next, a drawing correction method using the business support system configured as described above will be described with reference to FIG.
Here, the client terminal 20 installed at the work site X of the construction company A is the first client terminal 20a, the client terminal 20 installed at the contractor B of the construction company A is the second client terminal 20b, and the first client terminal 20a. The user (drawing requester) is assumed to be the first user, and the user (drawing creator) of the second client terminal 20b is assumed to be the second user.

  First, in step S1, a second user receives a request from the first user, creates a drawing using CAD software, and stores the created CAD drawing data in the storage device of the second client terminal 20b. Perform the process. Information necessary for creating the drawing can be acquired from a page of the work place X described later.

  Next, in step S2, the first user and the second user make an authentication request to the server system 10 by inputting authentication information to the input devices of the client terminals 20a and 20b. Specifically, first, each user operates the input device of the client terminals 20a and 20b to start a Web browser and display a login screen on the display device. Enter. At this time, when the user logs in via the intranet, the user ID, password and one-time password are input as authentication information. On the other hand, when the user logs in via the Internet, as authentication information, Enter your user ID and password. Thereafter, when the validity of the user is confirmed by the server system 10, as shown in FIG. 3, a top page corresponding to the attribute of the user is displayed on the display device. From this top page, each user can access shared information and services necessary for the execution of business.

  In step S3, the first user and the second user make a remote access processing request to the remote access management server 30 from each of the client terminals 20a and 20b. Specifically, first, the first user operates a workplace selection menu (for example, “various menu A” in FIG. 3) provided at a predetermined position on the top page, as shown in FIG. After selecting and displaying the work site X page on the display device of the first client terminal 20a, click the “IP phone” button provided at a predetermined position on the work site X page to call the second user. multiply.

  When the first user is connected to the second user, the first user clicks the “Web meeting (operator)” button provided at a predetermined position on the page of the work place X, and as shown in FIG. A message (workplace name, connection requester name, etc.) is input and the start of remote access operation is communicated to the second user by IP telephone. In response to this, the second user selects and displays the page of the work place X on the display device of the second client terminal 20b in the same manner as the first user, and “Web meeting (user)” on the screen. Click the button, and then confirm the confirmation message (FIG. 6) from the first user and click the connection button. As a result, the desktop image of the second client terminal 20b is displayed on the display device of the first client terminal 20a, and the second client terminal 20b can be remotely operated from the first client terminal 20a.

  In step S4, when the second user operates the second client terminal 20b or when the first user remotely operates the second client terminal 20b, as shown in FIG. 7, the second client terminal 20b After the CAD drawing created by the second user is displayed on the desktop of the first client, the first user can perform the remote operation from the first client terminal 20a on the CAD drawing on the desktop of the second client terminal 20b. Then, a process of directly modifying the image or a process of giving a modification instruction to the second user while referring to the CAD drawing on the desktop of the second client terminal 20b is executed.

  At this time, if the IP phone described above is used in combination, the instruction and will of the first user can be transmitted to the second user more accurately. Further, for example, when there is an actual document (drawing, document, photograph, etc.) at the second user's hand, the document is photographed with a Web camera, and the photographed image is taken on the desktop of the second client terminal 20b. If displayed above, the captured image can be displayed on the desktop of the first client terminal 20a as shown in FIG. For this reason, even materials that are not converted into electronic data can be exchanged between users while referring to the captured images. In addition, if the desktop image of the second client terminal 20b is stored in each of the client terminals 20a and 20b and the storage device of the server system 10, the contents of the instruction can be confirmed later. The remote access process can be easily terminated by performing an input operation for terminating the connection from one client terminal.

  Next, each process performed by the server system 10, the client terminals 20a and 20b, and the remote access management server 30 in each step described above will be described.

For example, after the creation of the drawing in step S1 is completed, when an input operation for specifying the URL of the login screen is performed from the input device of each client terminal 20a, 20b, each client terminal 20a, 20b receives the input. A process of transmitting data to the server system 10 is executed.
When the server system 10 receives the input data from each of the client terminals 20a and 20b, the server system 10 transmits login screen display data (HTML file) to each of the client terminals 20a and 20b, thereby authenticating each user (user information). ID, password, etc.) are requested. In response to this, each of the client terminals 20a and 20b performs a process of displaying on the display device a login screen that prompts the user to input authentication information.

Thereafter, when the user authentication information is input on the login screen, the client terminals 20 a and 20 b transmit the user authentication information to the server system 10.
Upon receiving the user authentication information from the client terminals 20a and 20b, the server system 10 determines the legitimacy of the user by comparing and collating the received authentication information with the authentication information stored in advance in the authentication information DB. To do.

  As a result of the determination, if the received authentication information does not match the stored data and it is determined that the user is not valid, the status code indicating that the authentication has failed is displayed as the client terminal 20a, 20b and rejects access from the client terminals 20a and 20b. On the other hand, if both match and it is determined that the user is valid, the user is identified from the authentication information with reference to the user information DB, and then the top page corresponding to the user is displayed. Create data (HTML file etc.). That is, based on the user's attribute information etc., the user can access the business system and shared information, or the message addressed to the user, etc., and post it at a predetermined position on the top page. Create top page display data that suits your position and role. The created display data is transmitted to the client terminals 20a and 20b.

  Upon receiving the top page display data from the server system 10, the client terminals 20a and 20b execute processing for displaying the top page on the display device based on the display data. As shown in FIG. 3, the top page includes various functions (“function-1” to “function-8”) such as notifications to users, electronic bulletin boards and schedule management, and various menus available to users ( “Various menus A” to “Various menus I”) are displayed. In the present embodiment, for example, a menu for selecting a workplace is assigned to the position of “various menu A”.

  When an input operation for selecting a page of the work place X is performed on the top page, each client terminal 20a, 20b transmits the input data to the server system 10. When the server system 10 receives the input data, the server system 10 identifies the user, creates display data for the page according to the user's attribute, and sends it to the client terminals 20a and 20b that requested the page. Execute the process to send to. When the client terminal 20a, 20b receives the display data of the page of the work place X from the server system 10, as shown in FIGS. 4 and 5, the page of the work place X is displayed on the display device based on the display data. To do.

  When an input operation (that is, a remote access processing request) for selecting the “Web meeting (operator)” button is performed on the page of the work site X by the first user, the first client terminal 20 a The user ID input at the time of login is transmitted to the remote access management server 30. When the remote access management server 30 receives the user ID from the first client terminal 20a, the remote access management server 30 transmits the user ID to the server system 10 and executes a process for inquiring the legitimacy of the first user.

  Upon receiving a user inquiry request from the remote access management server 30, the server system 10 checks whether or not the user ID received from the remote access management server 30 is included in the currently logged-in user ID group. To determine the legitimacy of the first user. As a result of the determination, if it is determined that the first user is not valid, a status code indicating that the authentication has failed is transmitted to the remote access management server 30, while the first user is valid. When it is determined that there is, a process of transmitting a status code indicating that the authentication is successful to the remote access management server 30 is executed.

  When the remote access management server 30 receives the status code indicating the authentication failure, the remote access management server 30 transmits display data including an error message such as “authentication failed” to the first client terminal 20a. The remote access processing request from 20a is rejected. On the other hand, when a status code indicating successful authentication is received, display data of an input screen for a confirmation message (workplace name, connection requester name, etc.) is transmitted to the first client terminal 20a.

  When receiving the input screen display data from the remote access management server 30, the first client terminal 20a displays a confirmation message input screen on the display device, as shown in FIG. 5, based on the display data. Thereafter, when an operation for inputting a confirmation message is performed by the first user, the first client terminal 20a executes a process of transmitting the confirmation message to the remote access management server 30.

  When the remote access management server 30 receives the confirmation message from the first client terminal 20a, the remote access management server 30 stores the confirmation message in the storage device and transmits display data of the standby screen to the first client terminal 20a. The one client terminal 20a performs processing for displaying a standby screen on the display device, as shown in FIG. 6, based on the received display data.

  On the other hand, when an input operation for selecting the “Web meeting (user)” button is performed by the second user on the page of the work site X, the second client terminal 20b performs steps similar to the first client terminal 20a. The user ID input at the time of login in S <b> 2 is transmitted to the remote access management server 30. When the remote access management server 30 receives the user ID from the second client terminal 20b, the remote access management server 30 inquires the server system 10 for the legitimacy of the second user in the same manner as when the user ID is received from the first client terminal 20a. I do.

  As a result of the inquiry, when the status code indicating the authentication failure is received from the server system 10, the remote access processing request from the second client terminal 20b is rejected. On the other hand, when the status code indicating the authentication success is received. The client terminal that has selected the Web page of the same work place as the work place selected by the user of the second client terminal 20b among the client terminals that have requested remote access processing is designated as the remote access partner. The confirmation message received from the client terminal is transmitted to the second client terminal 20b together with the display data of the connection confirmation screen.

  When the second client terminal 20b receives the display data of the connection confirmation screen from the remote access management server 30, the connection confirmation screen (including a confirmation message) is displayed on the display device based on the display data, as shown in FIG. Is displayed. Thereafter, when an input operation for selecting a connection button provided on the connection confirmation screen is performed by the second user, the second client terminal 20b transmits a response indicating that remote access is accepted to the remote access management server 30. Perform the process.

  When the remote access management server 30 receives the input data from the second client terminal 20b, the remote access management server 30 transmits a program (such as Microsoft ActiveX) to the client terminals 20a and 20b in cooperation with the Web browser. After the transmission, the relay process of data exchanged between the first client terminal 20a and the second client terminal 20b is started.

  That is, the second client terminal 20b performs a process of capturing an image of a desktop image displayed on the display device by the program and then compressing the image image using a predetermined algorithm and transferring the packet to the remote access management server 30. . The remote access management server 30 transfers the image data received from the second client terminal 20b to the first client terminal 20a, and the first client terminal 20a decompresses the image data sent from the remote access management server 30, A process of restoring the desktop image of the second client terminal 20b and displaying it on the display device is performed.

  The first client terminal 20 a transmits the input data to the remote access management server 30 when an input for remotely operating the second client terminal 20 b is performed by the first user. The remote access management server 30 transfers the input data received from the first client terminal 20a to the second client terminal 20b, and the second client terminal 20b performs various processes based on the input data sent from the remote access management server 30. Processing (for example, processing for displaying a CAD drawing on the desktop of the second client terminal 20b, processing for correcting the displayed CAD drawing, processing for drawing a correction instruction on the displayed CAD drawing, etc.) is executed.

  During this time, the first user can check the desktop image of the second client terminal 20b by referring to the display device of the first client terminal 20a, and operates the input device of the first client terminal 20a. Thus, the second client terminal 20b can be remotely operated.

  Thereafter, when an input operation for ending remote access is performed in any of the client terminals, the client terminal transmits a request for ending remote access to the remote access management server 30, and in response to this, The access management server 30 ends the remote access relay process.

  As described above, according to the present embodiment, it is possible not only to provide shared information and services necessary for performing business, but also to enable closer communication between users using remote access. For example, even if the content to be communicated to the partner is somewhat complicated, such as when a drawing instruction for CAD created is given to the creator, the content can be accurately and promptly communicated to the partner, such as rework. Can be prevented. Therefore, it is possible to improve work efficiency and shorten working hours.

  Further, in the present embodiment, the client terminal that has selected the same Web page as the Web page selected by the user of the second client terminal 20b among the client terminals that have already made a remote access processing request. Since the second client terminal 20b is automatically recognized as the first client terminal 20a as a communication partner, the user operation during remote access can be simplified. In addition, before starting the remote access relay process, the confirmation message created by the first client terminal 20a is displayed on the second client terminal 20b so as to prompt confirmation of the client terminal as the communication partner. Unauthorized access and connection destination errors can be prevented.

  Further, in this embodiment, when a remote access processing request is made from each client terminal 20 to the remote access management server 30, user authentication information of each client terminal 20 is transferred from the remote access management server 30 to the server system 10. Since the server system 10 confirms the legitimacy of the user, the authentication information of the user can be centrally managed by the server system 10, thereby reducing the cost of updating the authentication information. Can be reduced and security can be enhanced.

  In the present embodiment, the server system 10 according to the present invention is configured by a plurality of computers, but may be configured by a single computer. In the present embodiment, the server system 10 and the remote access management server 30 are configured as separate computers, but may be configured as a single computer.

  In this embodiment, the start of remote access operation is communicated using an IP phone. However, the present invention is not limited to this, and other communication means such as e-mail and FAX are used. It is also possible to tell the start of remote access operation.

1 is a schematic configuration diagram illustrating an embodiment of a business support system according to the present invention. It is a flowchart explaining the correction method of drawing using the work support system of FIG. It is a figure which shows the desktop image (top page) of a 1st and 2nd client terminal. It is a figure which shows the desktop image (1st client terminal: The page of the work place X, 2nd client terminal: Top page) of the 1st and 2nd client terminal. It is a figure which shows the desktop image (the 1st client terminal: the input screen of the message for confirmation, the 2nd client terminal: the page of the work place X) of the 1st and 2nd client terminal. It is a figure which shows the desktop image (1st client terminal: Standby screen, 2nd client terminal: Connection confirmation screen) of the 1st and 2nd client terminal. It is a figure which shows the desktop image (CAD work screen) of a 1st and 2nd client terminal. It is a figure which shows the desktop image (the imaging | photography screen of a Web camera) of the 1st and 2nd client terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Server system 20 Client terminal 20a 1st client terminal 20b 2nd client terminal 30 Remote access management server

Claims (6)

In a business support system having a server system for providing shared information and services necessary for performing business, and a plurality of client terminals connected to the server system via a network,
Of the plurality of client terminals, the client terminal on the remote access side is the first client terminal, the client terminal on the remote access side is the second client terminal, and the first client terminal remotely accesses the second client terminal. With a remote access management server that performs authentication processing and data relay processing
The server system is
While receiving the authentication information of the user from the remote access management server or each client terminal, the authentication means for determining the legitimacy of the user based on the authentication information,
The remote access management server
When receiving a remote access processing request from each client terminal, inquiry means for sending user authentication information of each client terminal to the server system and inquiring the legitimacy of the user;
When the legitimacy of the users of both the first client terminal and the second client terminal is confirmed, the first client terminal is allowed to remotely access the second client terminal, and the first client terminal A business support system comprising a remote access control means for executing a relay process of data exchanged between a terminal and the second client terminal.   The remote access control means selects a client terminal that has selected the same Web page as the Web page selected by the user of the second client terminal from among the client terminals that have requested remote access processing. 2. The business support system according to claim 1, wherein the first client terminal is recognized as a communication partner of two client terminals. The remote access control means is
After confirming the validity of the users of both the first client terminal and the second client terminal, the confirmation message created by the first client terminal is transferred from the first client terminal to the second client terminal. Process,
2. A relay process for data exchanged between the first client terminal and the second client terminal is started when a confirmation response is received from the second client terminal. Or the business support system of 2. The second client terminal performs a process of transmitting image data to the remote access management server, while the first client terminal performs a process of transmitting input data to the remote access management server,
The remote access management server performs processing for transferring the image data received from the second client terminal to the first client terminal and transferring the input data received from the first client terminal to the second client terminal. The business support system according to any one of claims 1 to 3. The second client terminal is
While capturing the desktop image of the second client terminal and transmitting the image as the image data to the remote access management server,
The first client terminal is
5. The business support system according to claim 4, wherein processing for restoring the image image received from the remote access management server and displaying the desktop image of the second client terminal is performed. A method for correcting a drawing using the business support system according to claim 5,
A user of the first client terminal is a first user, a user of the second client terminal is a second user,
The second user creates a drawing using CAD software, and stores the created CAD drawing data in the storage device of the second client terminal;
A step in which each user makes an authentication request to the server system by inputting authentication information to each client terminal;
A step in which each user makes a remote access processing request to the remote access management server from each client terminal;
The first user or the second user starting CAD software on the second client terminal and displaying the CAD drawing on the desktop of the second client terminal;
A process in which the first user modifies the CAD drawing on the desktop of the second client terminal by remote operation from the first client terminal, or the CAD on the desktop of the second client terminal. And a step of performing a process of giving a correction instruction to the second user with reference to the drawing.

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