JPH086532A - Multi-screen display device - Google Patents

Abstract

PURPOSE:To display a whole screen entirely without losing display information and to improve reliability as a multi-screen display device, even when a display means or a display control means of a multi-screen display device is stopped due to maintenance, trouble or the like CONSTITUTION:This device is provided with a whole screen reduction and distribution means 2 and a reduction setting means 5 between a whole screen generating means 1 and an each display control means 3. The whole screen reduction and distribution means 2 comprises a whole screen memory 7 storing a whole screen from the whole screen generating means l, a reduction setting memory 9 storing a reduction system set by the reduction setting means 5 avoiding a stop part, a whole screen reduction means 8, a reduction screen memory 10 storing a reduced screen, and a screen information distributing means 11 distributing reduced screens to a combination part of the round display control means 3 and a display means 4.

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, and more particularly to a part of a multi-screen display device in a field where it is required to constantly display a necessary screen such as a plant monitoring device. The present invention relates to a means for converting a screen display range in order to always display a necessary screen using the remaining normally operating display means even when the display means stops the display due to maintenance or failure.

[0002]

2. Description of the Related Art In a large-screen display device, for example, a system monitoring panel of a plant monitoring device, the size of the display screen often reaches several meters × several meters, so that one CRT, liquid crystal display element or plasma display is used. Even if the element is used, the full screen cannot be displayed. Therefore, it is inevitable to employ a multi-screen display device that combines a plurality of display means in a matrix to form a large display surface.

Since a conventional multi-screen display device combines a plurality of display means in a matrix to form a large display surface, as shown in FIG. 6, each display means 4 has a display screen generating means 6 and a display screen. The control means 3 are respectively connected. Further, each display means 4 employs a system in which partial screens obtained by dividing the entire display screen into the matrix are displayed, and one screen is displayed as the entire multi-screen.

In this screen display method, one screen is displayed on the entire multi-screen, so when some display means are temporarily stopped due to maintenance or failure, the display means that is stopped There was a problem that the partial screen corresponding to was not displayed and the information to be provided was missing.

On the other hand, Japanese Unexamined Patent Publication No. 5-46237 describes a method of simply superimposing and displaying a plurality of screens, or a method of reducing and superimposing a plurality of screens. This display method also displays a plurality of screens as one screen, and the above problem still remains.

Further, Japanese Patent Application Laid-Open No. 4-3299593 discloses
It has been proposed to provide an enlargement processing circuit for forming a display video signal in accordance with the addition of display means. However, even in this conventional example, when some display means are temporarily stopped due to maintenance or failure, the partial screen corresponding to the stopped display means is not displayed and the information to be provided There is no suggestion of a solution to the problem of lack of.

[0007]

In each of the above-mentioned prior arts, in the multi-screen display device, consideration is given to the loss of display information when some display means are temporarily stopped due to maintenance or breakdown. There was a problem that necessary information was not displayed. Especially when the multi-screen display device is applied to the system monitoring panel of the plant monitoring device,
There was a problem that the state of the plant could not be accurately grasped.

An object of the present invention is to provide a multi-screen display device in which even if a part of the display means is temporarily stopped due to maintenance or failure, the entire screen to be displayed by only the sound display means is displayed. It is an object of the present invention to provide a multi-screen display device in which all the information is displayed without omission and the display information is not lost.

[0009]

In order to achieve the above object, the present invention provides m × n (m and n are natural numbers and m × n).
≧ 2) display means arranged in a matrix, display control means provided corresponding to each display means, m
It is arranged between the whole screen generating means for generating image information to be displayed as the whole of the × n display means, and the whole screen generating means and the m × n display control means, and changes the size of the image information. A multi-screen including a whole-screen reduction distribution mechanism for displaying the entire image information by distributing to p × q (p and q are natural numbers and p ≦ m, q ≦ n) display means among the xn display means. A display device is proposed.

In order to achieve the above-mentioned object, the present invention further comprises a display means arranged in a matrix of m × n (m and n are natural numbers and m × n ≧ 2) and a display means, respectively. The display control means provided in correspondence with the display control means, the whole screen generating means for generating image information to be displayed as the m × n display means as a whole, and the display operation of the m × n display means or the display control means. P × q (p and q are natural numbers, and p ≦ q, excluding the rows or columns of the matrix corresponding to the stopped means.
m, q ≦ n) reduction setting means for independently setting the reduction ratio of m × n total display means of the sound display means and the display control means in the row / column direction, the whole screen generating means and m It is arranged between the × n display control means and changes the size of the image information to the reduction ratio set by the reduction setting means, and p × q
The present invention proposes a multi-screen display device including an entire screen reduction / distribution mechanism that distributes to individual sound display means and displays the entire image information.

More specifically, the whole screen reduction / distribution mechanism uses a whole screen memory for storing the whole screen from the whole screen generation means and a reduction method set by the reduction setting means while avoiding the position of the stopped means. Reduction setting memory to be stored,
It comprises an entire screen reduction means, a reduced screen memory for storing the reduced screen, and a screen information distribution means for distributing the reduced screen to a combination portion of the sound display control means and the display means.

In order to input the position of the means which has stopped the display operation to the reduction setting means, a switch matrix arranged corresponding to m × n display means can be provided.

Instead of the switch matrix, the presence / absence of information output from each display means and / or the presence / absence of a drive signal from each display control means to each display means are detected, and the position of the means for stopping the display operation is detected. A sensor for inputting to the reduction setting means may be provided.

[0014]

It is possible that a part of each display means or each display control means forming the multi-screen temporarily stops the display operation due to a failure or the like. In order to prevent this breakdown, regular maintenance and inspection is required.

As described above, in the conventional system in which the partial screen displayed on each display means is fixed corresponding to the total number of display means, some display means or display control means are temporarily operated. When the display is stopped, the information of the partial screen corresponding to the display means being stopped is not displayed, and there is a problem that the information is lost.

On the other hand, in the present invention, the whole screen reduction distribution means and the reduction setting means are provided between the means for generating the whole screen and the respective display control means, so that the reduced screen becomes a sound display control means. Since it can be distributed to the combination part with the display means, even if some display means are stopped due to maintenance or breakdown, the necessary entire screen is displayed without omission and information loss is eliminated. be able to.

Presence / absence of information output from each display means and /
Alternatively, if a sensor for detecting the presence / absence of a drive signal from each display control means to each display means and inputting the position of the means that stopped the display operation to the reduction setting means is provided, a part of Even when the display means of is stopped due to maintenance or failure, the reduced screen is automatically distributed to the combination of the sound display control means and the display means, and the entire necessary screen is displayed without omission. Information loss can be eliminated.

[0018]

EXAMPLE An example of a multi-screen display device according to the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing a schematic configuration of an embodiment according to the present invention of a multi-screen display device forming an M × N matrix. The feature of this embodiment is that between the whole screen generating means 1 and each display control means 3, instead of the display screen generating means 6 which is individually provided corresponding to the display means 4 in the conventional multi-screen display device. , Common whole screen reduction distribution means 2 and reduction setting means 5
Is provided. In this embodiment, the partial screen corresponding to each display means 4 of the whole screen created by the whole screen generating means 1 can be distributed to the combination portion of the sound display control means 3 and the display means 4. There is. The reduction setting unit 5 sets the reduction method for the entire screen reduction distribution unit 2 from the outside.

FIG. 2 is a block diagram showing a more detailed structure of the whole screen reduction / distribution means 2 in the embodiment of FIG. The entire screen reduction / distribution unit 2 includes an entire screen memory 7 that stores the entire screen created by the entire screen generation unit 1, a reduction setting memory 9 that stores the reduction method set by the reduction setting unit 5, and an entire screen reduction. It comprises a means 8, a reduced screen memory 10 for storing the reduced screen, and a screen information distribution means 11 for distributing the reduced screen to a combination portion of the sound display control means 3 and the display means 4. The entire screen reduction means 8 reduces the screen data in the entire screen memory 7 based on the reduction method stored in the reduction setting memory 9 and stores it in the reduced screen memory 10. The screen information distribution unit 11 uses the screen data in the reduced screen memory 10 to display the screen data in a healthy manner.
Is edited into a partial screen corresponding to, and dividedly supplied to each display control means 3.

The entire screen generation means 1 creates an entire screen to be displayed on the entire multi-screen and outputs it to the entire screen reduction / distribution means 2. The whole screen reduction distribution means 2 is the reduction setting means 5
The entire screen is reduced and distributed based on the reduction method set to, and the partial screen corresponding to each healthy display control unit 3 is output. Each sound display control means 3 causes the display means 4 to display the corresponding partial screen.

As described above, even when some display means are stopped due to maintenance or failure, if the entire screen is reduced based on the reduction method set in the reduction setting means,
The information of the reduced screen can be distributed to the sound display means, and the information of the entire screen can be displayed without omission.

More specifically, inside the whole screen reduction / distribution unit 2, the whole screen output from the whole screen generation unit 1 is stored in the whole screen memory 7, and the reduction set by the reduction setting unit 5 is performed. The method is stored in the reduction setting memory 9. The contents of the reduction setting memory 9 are the reduction ratio in the vertical direction and the horizontal direction and the display range (display unit unit) of the reduced screen. The entire screen reduction means 8 reduces the entire screen based on this reduction method and stores it in the reduced screen memory 10. The screen information distribution unit 11 uses the reduced screen memory 10
Then, a partial screen corresponding to each sound display means 4 is cut out and output to the corresponding display control means 3. In the normal state where all display means 4 and display control means are in a normal state,
The reduction ratio is 1 for both sides and the entire display range is displayed, and the contents of the reduced screen memory 10 are equal to the contents of the entire screen memory 7.

FIG. 3 is a diagram showing an example of thinning processing when reducing the screen according to the present invention.

The screen reduction processing in the whole screen reduction means 8 is realized by the dot thinning processing 12 corresponding to the reduction ratio. FIG. 3 shows the dot thinning processing of the reduction ratio (M-1) / M. When the dot information is thinned out at a ratio of 1 dot to M dots with respect to the dot pattern 13 on the entire screen, the reduced dot pattern 14 is obtained. In the case of M × N multi-screen, assuming that a plurality of display means or display control means do not stop at the same time,
That is, assuming that the failure occurs for each one of the display means, the reduction ratio is (M-1) / M or (N-1).
It becomes either / N. In this case, two or more dots to be thinned do not continue. Therefore, if the minimum drawing unit of the entire screen is set to 2 dots, the screen information is not lost in the dot thinning process.

FIG. 4 is a flow chart showing an example of a processing procedure in the whole screen reducing means 8. The whole screen reduction means 8 reads the whole screen information stored in the whole screen memory 7 in the whole screen reading process 15. In the vertical direction reduction setting presence / absence determination process 16, the vertical direction reduction ratio of the reduction setting memory 9 is referred to, and if the vertical direction reduction setting is made, the vertical direction dot thinning process 17 is executed. In the horizontal direction reduction setting presence / absence determination process 18, the horizontal direction reduction ratio of the reduction setting memory 9 is referred to, and if there is a horizontal reduction setting, the horizontal direction dot thinning process 19 is executed. In the reduced screen storage processing 20, the reduced screen memory 1 stores the screen information reduced by the above processing.
Store in 0.

FIG. 5 is a diagram showing an example of a reduced screen display according to the present invention. Here, a 3 × 3 multi-screen is shown. In normal times, information is displayed using the full screen as in Display Example 21. In contrast to the normal display example 21, the display example 2 when the display unit 4 on the right middle stage is stopped
2, the entire screen is reduced to 2/3 only in the horizontal direction, and the left side 2
Information is displayed on the column display means. In the display example 23 when the display unit 4 in the lower middle stage is stopped, the entire screen is reduced to 2/3 only in the vertical direction and displayed in the upper two stages. In either case, the effective display screen changes to portrait or landscape, but necessary information is displayed without omission. Further, in the display example 24 when the display unit 4 in the middle middle stage is stopped, the entire screen is reduced to 2/3 only in the horizontal direction,
Moreover, it is divided into two columns, the left side and the right side. Although reduction and division occur at the same time, even in this case, necessary information is still displayed without omission.

As is apparent from the above display example, in the multi-screen display device of the present invention, the information of the entire screen is displayed even if some display means or display control means are stopped due to maintenance or failure. Obviously, it can be displayed without omission.

In the reduction setting means 5, a reduction display pattern is registered in advance as a map in consideration of how it is easy to see the display depending on which display means 4 has stopped the display. You should keep it.

Although not shown here, there are some means for transmitting to the reduction setting means 5 which display means 4 has stopped displaying. For example, as a simple hardware configuration, a switch matrix corresponding to the matrix of the display means 4 is installed in the operator console, and when the display means 4 stops the display, the operator visually recognizes the stop position and switches the corresponding switch. The push method is adopted. Instead of the switch matrix, the switch matrix may be displayed by software on a CRT incorporated in the operator console to realize a touch panel on the screen. Further, a sensor for detecting the presence / absence of a drive signal to each display means 4 and the presence / absence of information display from each display means 4 is installed, and the output stop signal automatically causes the reduction setting means 5 to stop the display of the display means 4. The method of transmitting to can also be used. It will be clear that the switch matrix and the sensor may be co-located.

[0030]

According to the present invention, in a multi-screen display device, between the whole screen generating means and each display control means,
Since the whole screen reduction distribution means and the reduction setting means are provided and the reduction screen can be distributed to the combination portion of the sound display control means and the display means, some display means are stopped due to maintenance or failure. Even if it is, it is possible to display the necessary entire screen without omission and to eliminate the loss of information.

In particular, when it is required to constantly display important information such as a plant monitoring device, the maintenance and inspection work can be executed without giving operational constraints to the plant operator.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of a multi-screen display device according to the present invention.

FIG. 2 is a block diagram showing a more detailed configuration of the embodiment of FIG.

FIG. 3 is a diagram showing an example of thinning processing when reducing a screen according to the present invention.

FIG. 4 is a flowchart showing an example of a processing procedure in an entire screen reduction unit.

FIG. 5 is a diagram showing an example of a reduced screen display according to the present invention.

FIG. 6 is a block diagram showing an example of a configuration of a conventional multi-screen display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 whole screen generation means 2 whole screen reduction distribution means 3 display control means 4 display means 5 reduction setting means 6 display screen generation means 7 whole screen memory 8 whole screen reduction means 9 reduction setting memory 10 reduced screen memory 11 screen information distribution means 12 Dot thinning processing 13 Dot pattern on the whole screen 14 Dot pattern after reduction 15 Read entire screen 16 Vertical direction reduction setting presence judgment 17 Vertical direction dot thinning 18 Horizontal direction reduction setting presence judgment 19 Horizontal dot thinning 20 Save reduced screen 21 Normal state 22 Display example when the right middle display means is stopped 23 Display example when the center lower display means is stopped 24 Display example when the center middle display means is stopped

Claims (5)

[Claims] 1. m × n (m and n are natural numbers and m × n)
≧ 2) display means arranged in a matrix, display control means provided corresponding to each of the display means, and an overall screen for generating image information to be displayed as m × n display means as a whole. It is arranged between the generating means, the whole screen generating means and the m × n display control means, and the size of the image information is changed to m.
A multi-screen reduction distribution mechanism that distributes to p × q (p and q are natural numbers and p ≦ m, q ≦ n) display means among the xn display means and displays the entire image information. Screen display device. 2. m × n (m and n are natural numbers and m × n)
≧ 2) display means arranged in a matrix, display control means provided corresponding to each of the display means, and an overall screen for generating image information to be displayed as m × n display means as a whole. P × q (p and q are natural numbers and p ≦ q) excluding the generating means and the row or column of the matrix corresponding to the m × n display means or the display control means that has stopped the display operation.
m, q ≦ n) reduction setting means for independently setting reduction ratios of the sound display means and display control means with respect to the m × n total display means in the row / column direction, and the whole screen generation means And the m × n display control means, the size of the image information is changed to the reduction ratio set by the reduction setting means, and the image is distributed to the p × q sound display means. A multi-screen display device comprising an entire screen reduction distribution mechanism for displaying the entire information. 3. The multi-screen display device according to claim 2, wherein the whole screen reduction / distribution mechanism avoids a position of the whole screen memory for storing the whole screen from the whole screen generating means and the stopped means. Reduction setting memory for storing the reduction method set by the reduction setting means, whole screen reducing means, reduced screen memory for storing the reduced screen, and display control means and display means for sounding the reduced screen. A multi-screen display device, comprising: a screen information distribution means for distributing to a combination portion of 4. The multi-screen display device according to claim 2, wherein in order to input the position of the means that has stopped the display operation to the reduction setting means, the display means corresponds to the m × n display means. A multi-screen display device comprising an arrayed switch matrix. 5. The multi-screen display device according to claim 2, wherein presence or absence of information output from each display unit and / or each display control unit from each display control unit. A multi-screen display device comprising a sensor for detecting the presence or absence of a drive signal and inputting the position of the means for stopping the display operation to the reduction setting means.