JPH1039921A - Monitor and control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a supervisory and control system with which the change of a screen defined as an operating object is facilitated and the space for installing a mouse and a keyboard can be reduced. SOLUTION: A mouse M, keyboard KB and display 8A are connected to an X terminal 8 connected to a network, a computer 4 is provided with a remote mouse server process 4A and the move or coordinate of a mouse cursor and a key code are transmitted while defining the move of the mouse cursor, button event and an input from the keyboard inside a window for mouse operating input corresponding to respective computers 4, 5 and 6 as events through the process so that multiscreen operation can be performed by one mouse and one keyboard.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring and control system having a multi-screen display function using a plurality of projector displays, and more particularly to a method for switching a screen operation input.

[0002]

2. Description of the Related Art Conventionally, an image display for monitoring control in a monitoring control system has been of a fixed display type to which a mosaic or the like is applied. Recently, 70 inches and 100
There is also a method of displaying on a projector display using a plurality of large screens such as inches.

FIG. 5 shows a configuration of a conventional monitoring display device. The monitoring screen has three large screens 1,
The screens 1, 2, and 3 are provided with computers 4, 5, and 6, respectively.
5 and 6 are connected to each other by Ethernet etc.
It is connected to the process controller 7 and the like.

[0004] The computers 4, 5, and 6 are connected to respective X servers with a mouse M and a keyboard KB for switching windows on a display screen and performing input operations by an operator.

With this configuration, each of the screens 1, 2, 3
Is input to each of the computers 4, 5,.
Using a mouse M and a keyboard KB connected to the computer 6, screen control is performed by an X server for each computer and a display process.

[0006]

In the conventional configuration, since the mouse M and the keyboard KB are connected to the X server of each computer, the screen 1 to be operated is
To change a few, use another mouse M and keyboard KB
It is necessary to switch to a new system, resulting in an inconvenient system configuration.

[0007] Further, a space for placing three mice and keyboards is required.

[0008] It is an object of the present invention to provide a monitoring and control system capable of easily changing a screen to be operated and reducing a space for installing a mouse and a keyboard.

[0009]

According to the present invention, a plurality of projector displays are provided, and a plurality of computers for individually controlling the image display of each display are provided. Each computer is connected to a network and connected to a process controller or the like. A monitoring and control system having a multi-screen display function, comprising: an X terminal connected to the network, a mouse, a keyboard, and a display; and a remote mouse server process provided in one of the plurality of computers. The remote mouse server process opens a mouse operation input window corresponding to each computer on the display of the X terminal, and moves the mouse cursor, button events, and input from the keyboard in the X terminal. X
Waiting as an event from the server, one of the computers is obtained from the window number where the mouse cursor is located on the display of the X terminal, and when the event is the mouse movement, a request to move the mouse cursor to the X server of the corresponding computer is made. In the mouse button event, an X event and coordinates are transmitted for the focus window of the mouse cursor of the corresponding computer, and the focus window of the mouse cursor of the corresponding computer is transmitted in the key input event from the keyboard. It is characterized in that a key code is transmitted by an X event in response.

Further, the present invention is characterized in that a workstation is provided in place of the X terminal, and the remote mouse server process is provided in the workstation.

Further, the present invention is characterized in that the mouse, the keyboard and the window display are connected to a computer provided with the remote mouse server process among the plurality of computers.

[0012]

FIG. 1 is a block diagram of a display device in a monitoring and control system according to an embodiment of the present invention.

FIG. 5 differs from FIG. 5 in that one mouse X and a mouse M, a keyboard KB, and a CRT display 8A are connected instead of the three computers 4, 5, and 6 by removing the mouse M and the keyboard KB. 8 to the network. In addition, one of the computers 4, 5, and 6
One computer 4 creates and mounts a remote mouse server process 4A.

The display processes 9 ₁ , 9 ₂ , 9 ₃ are for controlling the screen display mounted on each of the computers 4, 5, 6. It performs individual screen display control and operation control for 2, 3, and 4.

The process 4A has a software configuration for realizing the flowchart shown in FIG. Process 4A
Is started, a mouse operation input window corresponding to each of the computers 4, 5, and 6 is opened on the display 8A of the X terminal 8 (S1). Input from X
It waits as an event from the X server of the terminal 8 (S2).

If the event is a request for terminating the operation (S3), the window is deleted and the process is terminated (S3).
4).

When the event from the X server is not a termination request, the process 4A executes the display 8 of the X terminal 8.
One of the computers 4, 5, and 6 is obtained from the window number where the mouse cursor on A is located (S5).

Thereafter, the process 4A checks whether the event is a key input (S6), a mouse button event (S7), or a mouse movement (S8).

When the event is the movement of the mouse M (S
8) Then, a request for moving the mouse cursor is notified to the X servers of the corresponding computers 4, 5, and 6 (S9). And
When the movement of the mouse M moves across windows and moves to an adjacent window, a request to move the mouse cursor to the upper left and make it invisible is transmitted to the X server of the computer corresponding to the original window (S10).

If the event is a button event of the mouse M (S7), the process 4A
The focus window of the mouse cursor 5 or 6 is obtained, and the ID of the window is further obtained. An X event is transmitted to the obtained window (S11). At this time, the coordinates in the window are also obtained and transmitted at the same time.

In the case of a key input event from the keyboard KB (S6), the process 4A obtains the focus window of the mouse cursor of the corresponding computer 4, 5, 6, and further obtains the window ID. The key code is transmitted to the obtained window by the X event (S12).

From the above, in the present embodiment, it is only necessary to provide one mouse M and keyboard KB connected to the X terminal 8, and only one mouse M or keyboard KB
Screen 1, 2, 3 selected by the operation input of
Can be operated.

Also, the operation of displaying only one mouse cursor on the screens 1, 2, and 3 can be performed, and the mouse cursor can be displayed as if the three screens 1, 2, and 3 are one screen. Can be moved.

FIG. 3 shows another embodiment of the present invention. The drawing is different from FIG. 1 in that the X terminal 8 and the display 8A
In place of the workstation 10 and the display 10A in which the mouse M and the key code KB are connected.
The remote mouse server process 10B is mounted on the workstation 10.

The process of the process 10B in this embodiment is equivalent to the process 4A of FIG.

FIG. 4 shows another embodiment of the present invention. The drawing is different from FIG. 1 in that the X terminal 8 and the display 8A
In that a mouse 4 and a display 4B having a key code KB are connected to the computer 4.

The processing of the process 4A in the present embodiment is equivalent to that of FIG.

[0028]

As described above, according to the present invention, a remote mouse server process is provided in one computer or workstation, and a mouse and a keyboard are connected to an X terminal or workstation or computer.
Since the mouse cursor movement, button events, and keyboard input in the mouse operation input window corresponding to each computer are used as events, the mouse cursor movement, coordinates are transmitted, and key codes are transmitted. A space configuration including a mouse and a keyboard is provided, and an operation on an arbitrary screen selected by the operation input can be performed.

Also, the operation of displaying only one mouse cursor on each screen can be performed, and the mouse cursor can be moved as if a plurality of screens were one screen.

[Brief description of the drawings]

FIG. 1 is a system configuration (part 1) showing an embodiment of the present invention.

FIG. 2 is a processing procedure of a remote mouse server process in the embodiment.

FIG. 3 is a system configuration (part 2) showing another embodiment of the present invention.

FIG. 4 is a system configuration (part 3) showing another embodiment of the present invention.

FIG. 5 shows a conventional system configuration.

[Description of Signs] 1, 2, 3 ... Screen 4, 5, 6 ... Computer 4A, 10A ... Remote Mouse Server Process 8 ... X Terminal 8A, 10B ... Display 9 ₁ , 9 ₂ , 9 ₃ ... Display Process 10 ... Workstation M… Mouse KB… Keyboard

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location G06F 15/00 310 G05B 19/05 S

Claims (3)

[Claims] 1. A computer system comprising: a plurality of projector displays; a plurality of computers for individually controlling image display of each display; each computer having a multi-screen display function for connecting to a process controller or the like through a network connection. A monitoring and control system, comprising: an X terminal connected to the network to which a mouse, a keyboard and a display are connected; and a remote mouse server process provided in one of the plurality of computers, wherein the remote mouse server process comprises: A window for mouse operation input corresponding to each computer is opened on the display of the X terminal, and the movement of a mouse cursor, a button event, and an input from the keyboard in the window are waited as an event from the X server of the X terminal. The X end One of the computers is obtained from the window number where the mouse cursor is located on the display of the mouse. If the event is the mouse movement, an X server of the computer is notified of the mouse cursor movement request, and the mouse button event Then, an X event and coordinates are transmitted by obtaining the focus window of the mouse cursor of the corresponding computer. In the key input event from the keyboard, a key code is transmitted by obtaining the focus window of the mouse cursor of the corresponding computer and the X event. A supervisory control system characterized by the above. 2. The monitoring control system according to claim 1, wherein a workstation is provided in place of the X terminal, and the remote mouse server process is provided in the workstation. 3. The monitoring control system according to claim 1, wherein the mouse, the keyboard, and the window display are connected to a computer provided with the remote mouse server process among the plurality of computers. .