JPH09244862A - Multiscreen display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the multiscreen display device which can make a simultaneous flicker display while displaying an image of symbols, etc., over plural screens. SOLUTION: A computer 4 for display control is provided with display processes 42 -44 which generate screen data over respective screens 1-3 as one data, provide numbers for deciding respective images, and generate the image data by computers for display control, and provided with image display range setting parts 45 -47 which segment generated screen data of the respective display processes, screen by screen, and transfer them to other computers for display control as divided image data. Then a remote mouse server 48 which informs each display process of a flicker display of an image specified with a mouse 8 is provided to display images of plural screens and make a simultaneous flicker display.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-screen display device using a plurality of projector displays and the like, and more particularly to a device for flicker-displaying an image such as a symbol on a screen.

[0002]

2. Description of the Related Art Monitoring and control devices for electric power systems and plants are
In addition to a CRT display, a projector display or the like for large-screen display is used as the monitoring means in the monitoring room to enable system symbol display and the like.

Further, in order to increase the screen size, there is also a multi-screen display device in which a plurality of projector displays and the like are arranged in parallel and the power system diagram and the like are divided and displayed on the respective displays. In this multi-screen display device, each screen is subjected to display control by an individual display control computer.

FIG. 4 shows a conventional multi-screen display device. An image displayed on each of the screens 1 to 3 is composed of one monitor screen by connecting the three screens 1 to 3.
Display control is performed by the individual display control computers 4 to 6 which are capable of mutually transferring data through a network connection. The display screen shows a case where the four symbols A to D and their connecting lines are systematically displayed.

Here, when a symbol on the monitor screen is selected by a pointing device such as a mouse for operating a facility to be monitored by an observer, information related to the symbol is displayed in a window and at the same time which symbol is selected. The symbol may be displayed with flicker in order to inform the surveillance staff whether it has been done. In addition, when the information related to a symbol changes, the corresponding symbol may be displayed as a flicker.

[0006]

In the flicker display of symbols, in a multi-screen display device, when the symbols are displayed over a plurality of screens, the flicker display cannot be performed at the same time. Therefore, as shown in FIG. The screen is designed so that the symbols do not span multiple screens when created.

For this reason, there are restrictions on the positions for arranging the symbols on the monitor screen, and it becomes impossible to design freely, and the monitor screen may be difficult to see.

An object of the present invention is to provide a multi-screen display device capable of displaying flicker simultaneously while displaying images such as symbols over a plurality of screens.

[0009]

The present invention relates to an image designated by a pointing device or information whose state has changed by displaying images such as symbols on a plurality of screens in a divided manner by a plurality of display control computers which can transfer data to each other. In the multi-screen display device for flicker-displaying an image to be displayed, one of the computers creates screen data spanning each of the screens as one data and provides a number capable of discriminating each image. A display process is provided for generating image data for each display control computer, and an image display range setting unit for cutting out the generated image data of each display process for each screen and transferring it to other display control computers as divided display data. Provided by the pointing device The flickering of the image to be specified by the number in the detection of change, characterized in that a means for notifying the respective display process.

With this, it is possible to display images of symbols and the like across a plurality of screens, and when the images of the symbols and the like are selected on any of the screens or when the state of related information changes, a plurality of screens are displayed. Flickers can be displayed simultaneously for images such as symbols that straddle.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of a multi-screen display device showing an embodiment of the present invention, which is applied to a supervisory control device.

The display control computers 4 to 6 are connected to the network so that they can transfer data to each other as in the conventional case. However, the display control computers 4 to 6 have the X servers 4 ₁ , 5 ₁ and 6 ₁ to fetch the display image data. Images such as symbols are individually displayed on the screens 1 to 3.

[0013] Of this, the computer 4 includes a display process 4 _{2-4 4} for generating the same image display data for each screen 1-3, the display of the image data of a symbol and the like generated from the process 4 _{2-4 4} X server 4 ₁ through the image display range setting unit 4 _{5-4 7} to set a range for each screen,
It is configured to transfer to 5 ₁ and 6 ₁ .

[0014] Remote Mouse server 4 ₈ captures the mouse operation data from the mouse 8 or mouse for CRT9 through the mouse operation for X server 7 of the monitor control apparatus, the X server 4 _1, 5 _1, 6 ₁ and Symbol display process 4 ₂ ~
Give mouse operation data to 4 ₄ .

In the present embodiment, by providing the symbol display processes 4 ₂ to 4 ₄ in one display control computer 4, the image display on each of the screens 1 to 3 is performed by displaying an image of a symbol or the like spread over a plurality of screens. The data is created as one data common to each screen. By making this image data one, the data of the symbols and the like included in the image data are also common, and the image numbers assigned to the symbols and the like are also common to each screen.

[0016] Then, as shown in the display screen example of the system including the symbol in Figure 2, the cutting out of the screen by the image data by the image display range setting unit 4 _{5-4 7,} symbols B and D screenshot 1 and 2 And displays spanning 2 and 3 are allowed.

One image data such as a symbol to be displayed on each screen is generated by the display processes 4 ₂ to 4 _4. Of these, a portion extending over a plurality of screens is set by the image display range setting units 4 ₅ to 4 _7. It is set as the calculation result of the range that can be displayed on the equal screen from the designated display position.

As a result, the image data such as symbols spread over a plurality of screens can be displayed in the image display range setting unit _45.
Give the equal screen cut out portions each screen is displayed by ~ 4 _7.

On this display screen, flicker display by mouse operation is performed as follows.

(1) When a symbol across the screen is selected with the mouse 8, the event is the X server 7
And through the remote mouse server 4 _8, the display process 4 ₂ - the mouse cursor corresponding to the screen located
One of 4 ₄ is notified.

(2) The display process that has received the event is
The symbol on the corresponding screen is flickered, and other display processes are notified of the number of the symbol having the event.

(3) The display process, which has been notified of the symbol number by the occurrence of the event, causes flickering if the same symbol exists in the display screen of the corresponding screen.

Therefore, according to this embodiment, an image such as a symbol can be displayed on a plurality of screens,
Moreover, when a symbol or the like that is spread over a plurality of screens is selected with the mouse, flicker can be displayed on each screen.

FIG. 3 shows another embodiment of the present invention, which is a device configuration for multi-screen display when a state change of information related to a symbol is detected.

1 is different from FIG. 1 in that a state conversion detecting process 10 is provided in the computer 4, and when the process 10 detects a state change of information related to a symbol, all the displaying processes 4 ₂ to ₄ 4 are shown. To inform the symbol number,
Issue the flicker request.

Display processes 4 ₂ to 4 which received this request
₄ causes a flicker if the same symbol exists in the display screen of the corresponding screen.

Also in this embodiment, an image of a symbol or the like can be displayed across a plurality of screens, and furthermore, when a state change corresponding to a symbol or the like across a plurality of screens is detected, flicker display can be performed on each screen. .

[0028]

As described above, according to the present invention, screen data spanning each screen is created as one data, and a number for distinguishing each image is provided, and the image data of one data is controlled for each display. Image data generated by each display process, cut out the image data generated by each display process for each screen, and transferred to other display control computers as divided display data, and the image specified by the pointing device or the image number specified by the state change is detected. Since the flicker display is notified to each display process,
It is possible to display images such as symbols that span multiple screens, and when symbols such as images are selected on any screen or when the status of related information changes, such as symbols that span multiple screens. There is an effect that the images can be displayed with flicker at the same time.

[Brief description of drawings]

FIG. 1 is a device configuration diagram showing an embodiment of the present invention.

FIG. 2 is an example of a display screen according to the embodiment.

FIG. 3 is a device configuration diagram showing another embodiment of the present invention.

FIG. 4 is a configuration diagram of a conventional device.

[Explanation of symbols]

1, 2, 3 Screen 4, 5, 6 display control computer 4 _1, 5 _1, 6 ₁ ... X server 4 _2, 4 _3, 4 ₄ ... display process 4 _5, 4 _6, 4 ₇ ... image display Range setting part 4 ₈ ... Remote mouse server 10 ... State change detection process

Claims (1)

[Claims] 1. A multi-screen in which images such as symbols are divided and displayed on a plurality of screens by a plurality of display control computers that can transfer data to each other, and an image designated by a pointing device or an image related to information whose state has changed is flicker-displayed. In the display device, one of the computers is provided with a number capable of creating screen data spanning each of the screens as one data and discriminating each image, and the image data of the one data is provided to each display control computer. A separate display process is provided, and an image display range setting unit that cuts out the generated image data of each display process for each screen and transfers it as divided display data to another display control computer is designated by the pointing device or With the above number when detecting a state change Multiscreen display device characterized by having a means for notifying the flickering of the constant images on the respective display process.