JP3665527B2 - Computer screen sharing control method, computer screen sharing control system, and centralized management server - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a computer screen sharing control method , a computer screen sharing control system, and a centralized management server in a school lesson or company meeting where a plurality of computers need to share and work on a specific computer screen.
[0002]
[Prior art]
Conventional technologies include VNC (Virtual Network Computing) (Fig. 5) for one-to-one screen sharing and remote control, and Microsoft NetMeeting (Fig. 6) for screen sharing and remote control with multiple computers. ) Etc. exist.
[0003]
FIG. 5 is a diagram for explaining the VNC, in which 20 is a network, 21 is a screen providing computer, 22 is a screen sharing computer, and 23 is a remote control computer.
[0004]
FIG. 6 is a diagram for explaining NetMeeting, and the reference numerals in the figure correspond to those in FIG.
[0005]
[Problems to be solved by the invention]
The VNC can share the screen of one computer, for example, 21 with another computer 22 in a client server system, and can be remotely controlled from the computer 23. VNC supports multi-platform, but can only perform one-to-one computer screen sharing and remote control.
[0006]
Many electronic conferencing programs, such as Microsoft's NetMeeting, provide screen sharing and remote control on multiple computers, but they do not support multiple platforms and form multiple logical groups. In addition, there is no means for switching between a computer that provides a screen for a logical group and a computer that is remotely operated at an arbitrary timing.
[0007]
An object of the present invention is to perform one-to-multiple computer screen sharing control and control in a logical group.
[0008]
[Means for Solving the Problems]
In order to share the computer screen in real time, screen update information is created at high speed in the computer that provides the screen (screen providing computer), transmitted through the network, and received by the computer that shares the screen (screen sharing computer). It is necessary to draw the received screen update information at high speed. Among these, a program for creating screen update information at high speed and a program for drawing screen update information at high speed depend strongly on platforms such as OS and hardware.
[0009]
Therefore, in the present invention, by separating the system into the screen update information creation unit, the screen update information distribution unit, and the screen update information display unit, the screen can be shared even in a situation where a plurality of platforms are mixed. It has become. In addition, the screen update information distribution unit uses the IP multicast for distributing the screen update information, so that a plurality of screen sharing computers can share the screen of the screen providing computer.
[0010]
In addition, a server that centrally manages the entire system is arranged on the network, and a logical group is formed by a plurality of screen providing computers, a plurality of screen sharing computers, and a plurality of remote control computers (computers that remotely operate the screen providing computers) By managing the roles and connections, it is possible to change the screen providing computer, add or delete the screen sharing computer, and change the remote control computer at any time. Since different logical groups use different combinations of IP multicast addresses and port numbers, the screen providing computer screen can be shared in units of logical groups.
[0011]
In VNC, connection between client servers is used for transmission and reception of screen update information. In the present invention, IP multicast is used for distribution of screen update information. A certain amount can be suppressed.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a diagram for explaining the principle of the present invention. Reference numeral 1 is a network, 2 is a centralized management server, 3A and 3B are logical groups, 4,9 are screen providing computers, 5,6,8, Reference numerals 10 and 11 denote screen sharing computers, and reference numerals 7 and 12 denote remote control computers.
[0013]
As shown in FIG. 1, a plurality of screen providing computers 4, 9, a plurality of screen sharing computers 5, 6, 8, 10, 11, a plurality of remote control computers 7, 12, and a central management server 2 is connected.
[0014]
The screen providing computer, the screen sharing computer, and the arrest control computer are divided into a plurality of logical groups 3A and 3B. In the logical group, there are 0 or 1 screen providing computers, 1 or more screen sharing computers, 0 or 1 remote control computers at the same time, and their roles are managed by the centralized management server 2. .
[0015]
FIG. 2 is a diagram showing the communication mode of the present invention, and shows the module configurations of the screen providing computer, the centralized management server, the screen sharing computer, and the remote control computer, and the communication mode between the modules.
[0016]
The screen providing computer includes a screen update information creation unit 13 and a screen operation information reflection unit 14. The central management server includes a screen update information distribution unit 15 and a screen operation information relay unit 16. The screen sharing computer has a screen update information display unit 17. The remote control computer has a screen operation information input unit 18.
[0017]
The screen sharing computer and the remote control computer may be a single computer. The screen providing computer and the central management server communicate bidirectionally using a TCP connection.
[0018]
When distributing information from the central management server to the screen sharing computer, IP multicast is used. When information is transmitted from the remote control computer to the central management server, a TCP connection is used.
[0019]
FIG. 3 shows a screen sharing sequence.
First, the screen update information creating unit 13 on the screen providing computer creates screen update information (step 100). Then, the screen update information creation unit 13 transmits the screen update information to the screen update information distribution unit 15 on the central management server (step 110).
[0020]
Based on this, the screen update information distribution unit 15 receives the transmitted screen update information (step 200).
[0021]
The screen update information distribution unit 15 has a correspondence table between the logical group, the IP multicast address, and the port number, and searches the IP multicast address / port number pair of the corresponding logical group from the correspondence table (step 210). . The screen update information distribution unit 15 distributes the screen update information to the searched IP multicast address and port number (step 220).
[0022]
The screen update information display unit 17 on the screen sharing computer receives the screen update information distributed by IP multicast (step 300). Then, the screen update information display unit 17 displays the received screen update information (step 310).
[0023]
FIG. 4 shows a remote control sequence.
First, the screen operation information input unit 18 on the remote control computer converts a user input operation into screen operation information (step 400). Then, the screen operation information input unit 18 transmits the screen operation information to the screen operation information relay unit 16 on the central management server (step 410).
[0024]
Based on this, the screen operation information relay unit 16 receives the transmitted screen operation information (step 500).
[0025]
The screen operation information relay unit 16 has a correspondence table of the logical group and the screen providing computer currently used, and searches the screen providing computer of the corresponding logical group from the correspondence table (step 510). The screen operation information relay unit 16 transmits the screen operation information to the searched screen providing computer (step 520).
[0026]
The screen operation information reflecting unit 14 on the screen providing computer receives the transmitted screen operation information (step 600). Then, the screen operation information reflection unit 14 performs an operation specified by the received screen operation information (step 610).
[0027]
Finally, a method for giving an instruction to the central management server 2 and changing the logical group will be described.
[0028]
When changing the screen providing computer, the central management server 2 cancels the connection with the previous screen providing computer and receives the screen update information from the designated new screen providing computer.
[0029]
When changing the remote control computer, the central management server 2 disconnects the previous remote control computer and receives screen operation information from the specified new remote control computer.
[0030]
When adding a screen sharing computer, the centralized management server 2 searches for the IP multicast address / port number pair of the specified logical group and transmits it to the screen sharing computer to be added. The newly added screen sharing computer receives screen update information from the IP multicast address and port number specified from the central management server.
[0031]
When deleting the screen sharing computer, the central management server 2 instructs the designated screen sharing computer to stop receiving the screen update information. Upon receiving the instruction, the screen sharing computer stops receiving screen update information from the IP multicast address and port number.
[0032]
【The invention's effect】
As described above, according to the present invention, a plurality of multi-platform computers can share a computer screen and remotely control the computer. At that time, the amount of communication on the network can be suppressed to the same level as in the case of one-to-one sharing by using IP multicast.
[0033]
In the present invention, the screen providing computer, the screen sharing computer, and the remote control computer are managed by the central management server to form a logical group. Since different screen providing computers can be designated for each logical group, the screens of different screen providing computers can be shared in units of logical groups. By giving an instruction to the central management server, the configuration of the logical group can be changed at an arbitrary timing.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining the principle of the present invention.
FIG. 2 is a diagram showing a communication form of the present invention.
FIG. 3 is a flowchart illustrating a screen sharing sequence according to the present invention.
FIG. 4 is a flowchart illustrating a remote control sequence according to the present invention.
FIG. 5 is a diagram for explaining a prior art (VNC).
FIG. 6 is a diagram for explaining the prior art (NetMeeting).
[Explanation of symbols]
1: Network 2: Centralized management server 3: Logical group 4, 9: Screen providing computer 5, 6, 8, 10, 11: Screen sharing computer 7, 12: Remote control computer

Claims (5)

The centralized management server connected to the network manages the roles and connections of each of one or more screen providing computers, screen sharing computers, and remote control computers connected to the network, thereby changing the screen providing computers and screens. additional shared computer, delete, and make changes to the remote control computer,
A computer screen sharing control method in which the screen sharing computer shares the screen of the screen providing computer via the central management server, and the remote control computer operates the screen providing computer,
Before Symbol central management server, and the process of acquiring a screen update information from the screen providing computer,
The centralized management server, the steps of delivering the screen update information on the network by multicast,
The screen sharing computer, the screen sharing sequence of the screen update information distributed on the network and a process of displaying accept taken,
Said remote control computer, and transmitting the screen operation information to the central management server,
The centralized management server, and transmitting the screen operation information received from the remote control computer on the screen providing computer,
The screen providing computer, a remote control sequence of a process of executing the specified operation by the screen operation information received from the central management server,
As each sequence runs ,
When changing the screen providing computer, the central management server cancels the connection with the previous screen providing computer and receives the screen update information from the designated new screen providing computer,
When changing the remote control computer, the central management server disconnects the previous remote control computer and receives the screen operation information from the specified new remote control computer,
When adding a screen sharing computer, the central management server transmits a multicast address to the screen sharing computer based on the designation, so that the screen sharing computer receives screen update information from the multicast address,
When deleting a screen sharing computer, the centralized management server instructs the designated screen sharing computer to stop receiving screen update information, and the screen sharing computer
A computer screen sharing control method characterized by stopping receiving screen update information from a multicast address . Dividing a plurality of the screen sharing computers into a plurality of logical groups,
Computer screen sharing control method 請 Motomeko l wherein you characterized by providing a screen plurality of said screen providing computer individually the logical group. The centralized management server connected to the network manages the roles and connections of each of one or more screen providing computers, screen sharing computers, and remote control computers connected to the network, thereby changing the screen providing computers and screens. additional shared computer, delete, and make changes to the remote control computer,
A computer screen sharing control system in which the screen sharing computer shares the screen of the screen providing computer via the centralized management server, and the remote control computer operates the screen providing computer,
Before Symbol centralized management server acquires the screen update information from the screen providing computer,
The centralized management server, to deliver the screen update information on the network by multicast,
The screen sharing computer, the screen sharing sequence displays the screen update information distributed on the network accept taken,
Said remote control computer transmits a screen operation information to the central management server,
The centralized management server, transmits the screen operation information received from the remote control computer on the screen providing computer,
The screen provides the computer executes the designated by the screen operation information received from the central management server operations
With remote control sequence,
As each sequence runs,
When changing the screen providing computer, the centralized management server cancels the connection with the previous screen providing computer and receives screen update information from the specified new screen providing computer ,
When the remote control computer is changed, the central management server disconnects the previous remote control computer and receives screen operation information from the designated new remote control computer .
When adding a screen sharing computer, the centralized management server transmits a multicast address to the screen sharing computer based on the designation, and the screen sharing computer receives screen update information from the multicast address ,
When deleting a screen sharing computer, the centralized management server instructs the designated screen sharing computer to stop receiving screen update information, and the screen sharing computer stops receiving screen update information from the multicast address. A computer screen sharing control system characterized by being configured to do so. A plurality of the screen sharing computers are divided into a plurality of logical groups,
Computer screen sharing control system 請 Motomeko 3 wherein you characterized by providing a screen plurality of said screen providing computer individually the logical group. The centralized management server connected to the network manages the roles and connections of each of one or more screen providing computers, screen sharing computers, and remote control computers connected to the network, thereby changing the screen providing computers and screens. Add or delete shared computers, and change remote control computers,
The screen sharing computer shares the screen of the screen providing computer via the central management server,
The remote control computer operates the screen providing computer
The centralized management server in a computer screen sharing control system,
Obtaining screen update information from the screen providing computer;
By distributing the screen update information over the network by multicast, the screen sharing computer receives and displays the screen update information.
Screen sharing sequence,
Receiving screen operation information from the remote control computer;
By transmitting the screen operation information to the screen providing computer, the screen providing computer is caused to execute the operation specified by the screen operation information.
With remote control sequence,
As each sequence runs,
If you change the screen provider, you will be disconnected from the previous screen provider and receive screen update information from the designated new screen provider ,
If you change the remote control computer, you will be disconnected from the previous remote control computer and receive screen operation information from the specified new remote control computer .
When adding a screen sharing computer, by sending a multicast address to the screen sharing computer based on the designation so that the screen sharing computer receives screen update information from the multicast address,
When deleting a screen sharing computer, by instructing the designated screen sharing computer to stop receiving screen update information, the screen sharing computer is stopped from receiving screen update information from the multicast address.
Configured as
Centralized management server characterized by that.

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