JPH07199881A - Display control system - Google Patents

Abstract

PURPOSE:To provide a system capable of facilitating control when plural displays are combined and used just like one display. CONSTITUTION:An application program 105 sends a plotting command to a host plot server 104. The host plot server 104 retrieves successively whether or not the sent command is incorporated in areas in charge of respective plot servers 121-123 registered in a plot server control table 182, and when the corresponding plot server is found, the host plot server 104 transfers the plotting command to the corresponding plot server to display it on a display. Thus, a picture is easily controlled without being conscious of plural displays 111-113.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display control system which uses a plurality of displays as if they were one display or uses a large screen display for display. Further, the present invention relates to a display control system that allows easy screen design when using a plurality of displays.

[0002]

2. Description of the Related Art Conventionally, when drawing on a plurality of displays, a so-called display controller is simply added to a slot in the main body of a computer so that a plurality of displays can be connected. Was being conducted. With this method, the drawing can be controlled directly by the computer, so it is effective without much effort when drawing one large virtual screen on multiple displays, but since the displays are connected by hardware In addition, the number of displays that can be connected was limited by the number of slots.

On the other hand, there is also a method in which a display server dedicated to the display is made resident as seen in the X window, and a plurality of the displays are connected using a network. Drawing commands are sent via the network.
It is sent to one or a plurality of drawing servers for drawing. This method has the advantage that multiple displays can be shared by multiple computers, and the number of connected units can be increased to the limit of the network. However, when you want to combine multiple displays and use them as if they were one display. It was necessary to individually issue a drawing command to each drawing server. Further, when displaying one screen on a plurality of displays in this way, when important information is displayed at a position where the display is cut off, it is necessary to display the screen so that it is easy to see. In this case, all the screens are considered in advance, and the screen is designed so that important information does not break the screen.

[0004]

In the above-mentioned prior art, when it is desired to use a plurality of displays as if they were one display, there is a limit to the expandability when the realization by a plurality of display controllers is used. When the implementation by the drawing server is used, it is necessary to issue a drawing command individually to a plurality of displays, which causes a problem of high management cost. Further, as another problem, when a plurality of displays are used, it takes a lot of time to design the screen.

An object of the present invention is to provide a display control system in which a plurality of displays can be easily and expandably used and can be used as if they were one display.

Another object of the present invention is to provide a display control system which can easily control a large screen display.

[0007]

According to the present invention, a plurality of displays, a plurality of drawing servers for controlling display of information on each of the displays, and at least one large-capacity information by using the plurality of displays. A display control system is configured from a management server that manages the plurality of drawing servers for displaying.

Furthermore, according to the present invention, at least a large screen display capable of displaying a large amount of display information, and a plurality of drawing servers for dividing the large screen into a plurality of areas and controlling the display in the divided areas. And a management server that manages the plurality of drawing servers to configure a display control system.

[0009]

The management server receives the data to be displayed, divides the data and distributes it to each drawing server. The divided display data is coordinate-converted by each drawing server so that it can be displayed on each display, and then
Is displayed.

Further, the management server receives the data to be displayed, divides the display data so as to fit into a plurality of divided areas on the large screen, and distributes the divided display data to each drawing server. Coordinates are converted on the server and displayed at the regular position on the large screen.

[0011]

FIG. 1 shows an embodiment of the present invention. 111 ~
113 is a display, 121-123 are drawing servers,
103 is a network, 104 is an upper drawing server, 10
5 is an application program, 106 is a device / sensor group, 181 is a background graphic storage local file, 182
Is a drawing server management table, 183 is a background graphic storage main file, and 184 is a tag database.

First, a case where the application program 105 displays a screen as shown in FIG. 2 on the entire display using the algorithm of FIG. 11 will be described.

Reference numerals 201 to 203 are rectangular figures, and 204 is a tag.

Such a screen has a background graphic storage main file 183 or a background graphic storage local file 181.
Multiple images are stored in and are managed by a series of screen numbers. The screen is drawn assuming the world coordinate system of a large screen display. The screen is composed of a collection of graphic primitives such as rectangles and circles. Also, in this screen, a position called a tag is shown by name. First, the case where the screen is in the background graphic storage main file 183 will be described.

The drawing server management table 182 of the upper drawing server 104 contains information about which drawing server is in charge of which part of the world coordinate system. Specifically, it has a shape as shown in FIG.

For example, the name of the drawing server "drawing server 1" and the diagonal points (X1, Y1)-(X2, Y2) of the rectangular area in the world coordinates that the drawing server handles are registered.

At this time, in a so-called seamless large-screen display device, a plurality of displays are stacked horizontally or vertically without a break, and therefore the drawing server serves as a continuous rectangular area having the same size. . Also, instead of such a large screen configuration, a configuration in which displays of a normal size are arranged side by side can be considered. In that case, since there is some gap between the displays, the area handled by the drawing server is set to be open.

The application program 105 retrieves graphic data from the background graphic storage file 183,
Drawing data of the drawing is sent to the upper drawing server 104 in the form of a drawing command. For example, "rectangular figure 1" 2
To display 01, use the polygonal line A1 point-B1 point-C1
A drawing command is sent, which is a combination of information indicating that the vertex is point D1 and the attribute value such as the color and width of the line.

The upper drawing server 104 determines to which drawing server the received information is to be sent, based on the drawing server management table 182. First, it is determined whether the received vertex data overlaps the rectangular area in the drawing server management table 182. In this example, it can be seen that the area is in the area (X1, Y1)-(X2, Y2) of the first "drawing server 1".

Then, a drawing command for drawing the rectangular figure 1 is transmitted to the "drawing server 1". At this time, the coordinates are converted from the world coordinates to the local coordinates of this drawing server and then sent out.

If there is a drawing command that extends over a plurality of drawing server areas, it is decomposed into a plurality of drawing commands. The case of “rectangular figure 2” 202 corresponds to this.

To do this, first, the points at the boundaries of the portions that span a plurality of drawing servers are calculated. This finds the intersection of the rectangle representing the area and the figure. In the case of the example, a new A2 ',
Two points of C2 'are calculated.

Next, using this point, the drawing command is decomposed. In this example, the drawing command is the polygonal line C2'-D2.
-A2-A2 ', broken line A2'-B2-C2-C2'.

Then, the divided drawing commands are again distributed to the respective drawing servers. At this time, each drawing command completely enters the area covered by one drawing server. Therefore, the drawing command is sent to each drawing server as it is. In this example, the polygonal line C2'-
The drawing command D2-A2-A2 'is sent to "drawing server 1", the drawing command A2'-B2-C2-C2' is sent to "drawing server 2", and so on. Also at this time, fix it to the local coordinate system of each drawing server and then send it out.

In the case of "rectangular figure 3" 203,
Since it spans three drawing servers, it is divided and sent to three drawing servers.

There are other drawing commands for figures, such as circles and fan-shaped ones, but as in the case of rectangles, those that do not span a plurality of drawing servers remain as they are, and those that do span are divided. Sent. In this way, all graphic elements on the screen are
It can be displayed as if it were one screen.

Next, a case where the screen to be displayed is in the background graphic storage local file 181 will be described.

The application program 105 instructs the upper drawing server 104 to specify the screen number and draw. The upper drawing server 104 having the designated screen number retrieves the data of the screen having the designated screen number from the background graphic storage local file 181. The information on the screen data is exactly the same as the format of the background graphic storage main file 183. Therefore, as in the case of the background graphic memory main file 183, by extracting the graphic primitives one by one and dividing them as necessary,
A drawing command is issued to each of the drawing servers 121 to 123.

Next, a case where control information is displayed on this screen using a certain algorithm shown in FIG. 12 will be described.

The control information is displayed numerically. The numbers are
It is sent from the corresponding device or sensor 106 to the application program 105 through a network or a shared memory. The position on the screen where the sent value is displayed is shown in the tag database 184 in the application program 105.
As shown in FIG. 5, the device and sensor numbers and tag names are stored as a set. The data uses the tag name, for example, "tag 1"
-Replaced with a value of 1.55. The tag name is stored in the background graphic storage main file 183 or the background graphic storage local file 181 in the form of a set of the tag name, coordinates, and the size of the tag area.

First, the case where the background graphic storage main file 183 is used will be described. When the data with the tag name is received, the application program 105 searches the background graphic main file 183 for the coordinates and size of the tag name. The data value together with the found coordinates and size is sent to the upper drawing server 104 as a character drawing command. For example, in the example of the tag shown in FIG.
The command is 5 "(P1, P1) width 10 height 5.

The upper drawing server sequentially searches the drawing server management table 182 based on the coordinates of the characters, and finds the drawing server which is responsible for the area including the coordinates. Then, the character drawing command sent to the drawing server
Send it after correcting to the local coordinates of the drawing server.
The drawing server draws the received character drawing command on its own display.

Next, the display of the control information when the currently displayed screen is the background graphic storage local file 181 will be described.

First, the values from the devices and sensors are converted into a set of tag name and data value using the tag database 184. The application program 105 directly sends the combination of the tag name and the data value to the upper drawing server 104. Upon receiving the combination of the tag name and the data value, the upper drawing server 104 uses the background graphic storage local file 181 to search for a portion containing tag information regarding the currently displayed screen. Using the information, the coordinates and area size corresponding to the sent tag name are obtained. A character drawing command is assembled using the obtained coordinates, area size, and data value.

Based on the obtained coordinates and the size of the area, the drawing server management table 182 is searched to find out which drawing server area is included.
Then, the coordinates of the character drawing command are converted into the local coordinates of the drawing server and then sent to the drawing server. The drawing server draws the character at the specified position.

In this way, the control information can be displayed even when the background graphic storage local file 181 is used.

As described above, one screen can be displayed over a plurality of displays, and numerical control information can be displayed on it.

In practice, a network 103 is provided between the upper drawing server and the drawing server in the form shown in FIG. At this time, when the drawing data of one figure is divided and output to a plurality of drawing servers,
The network 103 will be crowded. When the entrance of the machine corresponding to the upper drawing server 104 to the network becomes a bottleneck and drawing performance does not appear, the network interfaces 501 to 503 are increased to a plurality of paths as shown in FIG. Can be dealt with.

Further, when one figure is divided and displayed on a plurality of displays, it may not be displayed at one time but may be displayed differently depending on the display timing. To prevent this, a means for synchronizing the display of the drawing server may be prepared.

Specifically, "rectangular figure 3" 203 shown in FIG.
The case of drawing in synchronization will be described. Since this rectangle spans three drawing servers, two polygonal lines,
It is broken down into two straight lines. Next, the upper drawing server first sends a synchronization start command to the three drawing servers. Then, the drawing command that enters the area to the drawing server is 1
Send one by one. Specifically, draw the left polygonal line server 1
Then, the two straight lines in the middle part are sent to the drawing server 2, and the broken line in the right part is sent to the drawing server 3. Drawing server 1
21 to 123 do not execute this drawing command immediately, but buffer it. When the drawing commands for the two polygonal lines and the two straight lines have been sent, the upper drawing server 104
Issues a command to terminate synchronization to the three drawing servers 121 to 123.
Send to. When receiving the command, the drawing servers 121 to 123 perform drawing for the first time, and the rectangular figure 3 is displayed at once.

Next, a description will be given of an embodiment of a method of coping with the case where important information comes to the boundary of the display like "tag 1" 204 in FIG. FIG. 7 shows the configuration in this case. 701 is an importance setting local table,
Reference numeral 702 is an importance level setting main file.

When a plurality of displays are used as if they were one, the designer of the screen does not care where the joints of the displays are. Therefore, important control information is hung on the joint of the display,
It may be difficult to see. As a coping method therefor, there is a method in which the upper drawing server 104 determines the seam and moves the information which is considered important and moves it to a position where it is easy to see.

For this purpose, a criterion for determining what is important information is required. One is a method of defining importance from the beginning for the data in the figure. Specifically, the degree of importance is set for the tag name. There are + and-significance levels, and normally, a-significance level is set for things that are difficult to see but difficult to see.
The importance is stored in the form of a tag and importance in the importance setting main table or the importance setting local table as shown in FIG.

Both "tag 1" 204 and "tag 2" 205 are defined at the positions shown in FIG.
An importance level + is set in 04. "Tag 1" 204
Also, the "tag 2" 205 is also located at the joint between the "drawing server 2" 122 and the "drawing server 3" 123. When the background graphic storage local file 181 is used, the information with the tag name is directly sent to the upper drawing server 104.

Now, it is assumed that the data value of "10.5" in "tag 1" 205 is sent to the upper drawing server 104. Then, the higher-order drawing server 104 determines that the tag extends between the drawing servers and the coordinate value and size of the tag stored in the background graphic storage local file 181, and the drawing stored in the drawing server management table 182. Judging from the server area.

Further, the importance setting local table 70
Since "1" has a setting of importance + in "1", "tag 1" 204 is set in the drawing server management table 182.
Only the "drawing server 2" 122 that was first found by The coordinate value of “tag 1” 204 is set to “drawing server 2” 12
Change to 2 local coordinates, and also "Drawing server 2" 12
Consider the size of the tag area and move the coordinates in parallel so that it completely enters the area of 2. After that, a character drawing command is assembled using the coordinates, and the "drawing server 2" 1
Send to 22.

On the other hand, when the data value of 10.5 is similarly sent to the "tag 2" 205, the "drawing server 2" 12 remains as it is because the importance is not set.
2 and the "drawing server 3" 123, a character drawing command is sent. Therefore, the information is displayed across the two drawing servers.

If the background graphic memory main file 183 is used, the application program 105
Then, the tag name is converted into a coordinate value and the size of the area and sent as a character drawing command to the upper drawing server 104. At this time, the importance level setting main table 702 is looked at, and the character drawing command is sent together with the importance level +. Upper drawing server 104
Finds which drawing server contains the received character drawing command by searching the drawing server management table 182 based on the coordinates of the character drawing command and the size of the area.

If it extends over a plurality of drawing servers, the importance + is set, so that the drawing server found first is passed. The coordinates of the character drawing command are moved in parallel so that the area of the character drawing command completely fits into the area of the drawing server, and further converted to the local coordinates of the drawing server before being sent to the drawing server. The drawing server that receives the character drawing command displays the number at the designated position. In this way, the important control information is displayed across a plurality of drawing servers even when the background graphic storage main file 181 is used.

The following embodiment is a method of dynamically determining the importance without fixing the importance to the tag.

The importance setting main table or the importance setting local file has a field for each tag. A tag corresponds to a specific device or sensor. Set the importance field depending on whether the information is important when the data comes from the device or sensor. Since this setting is updated every certain period of time, the information whose importance degree is + may be negatively important in some cases.

When the background graphic memory main file 183 is used, when the application program 105 receives the tagged data, the application program 105 looks up the importance level of the data in the importance level setting main table 702, and based on it. Process so that important information is not applied to the seams. Further, in the case of the background graphic storage local file 181, the upper drawing server looks at the importance setting local file 701 and performs the same processing so that important information does not overlap the joint.

There is also a method in which the importance is not set by the device or sensor but is determined by the number of times the control value is changed. This uses an importance setting table with a count as shown in FIG. The count-added importance setting table has fields for tag name, importance, and count.

At first, the importance is all negative and the count is 0.
Is. The count is incremented by 1 each time the control value arrives at the tag. When the fixed time has passed, the application program 105 sequentially searches the importance setting table with count and sets the importance of a tag having a count of a certain value or more to +, and resets the count to 0. If the count is less than a certain value, the unit count is simply reset to 0.

In this way, information that has been frequently rewritten will not be displayed at the seam as having a high degree of importance.

In the next embodiment, the drawing servers 121 to 123 will be described.
The upper drawing server 104 exists in one of the moving machines. Until now, the drawing servers 121-
The 123 and the upper drawing server 104 existed on different machines, and the network 103 was connected between them to operate while communicating with each other.

However, the drawing server 121 is installed on the same machine.
Even if ~ 123 and the upper drawing server 104 exist, they can exist on the same machine as shown in Fig. 9 as long as they can be executed in parallel by multi-processes and communication between them is possible. Reference numeral 901 is a shared server in which both the upper drawing server 104 and the drawing server 121 exist.

The application program 105 sends the tagged data or the drawing command to the shared server 901 having the upper drawing server 104. The upper drawing server 104, which has received the data, sends the data to the drawing servers 122 to 123 on other machines to the network 1
03, and sends a command to the drawing server 121 in the own machine only by communication in the own machine without passing through the network 103.

At this time, since communication with the drawing server in the own machine becomes faster, there may be a gap in the case of synchronization.

In such a case, as one method, for example, there is a method of weighting the synchronization of the drawing server to deal with it. This is a method in which the drawing server, which is on the same machine as the upper drawing server, starts drawing after a certain time delay when receiving a command to end synchronization.

By properly taking that time delay,
Even if the upper drawing server is on the same machine, the display can be performed in good synchronization.

In the following embodiment, there are a plurality of upper drawing servers and they are managed hierarchically.

Up to now, the description has been given only in the case where there is one upper drawing server. However, there can be multiple drawing servers. As shown in FIG. 10, a hierarchical structure in which a plurality of drawing servers are managed by a plurality of upper drawing servers and the upper drawing server is managed by a higher drawing server is possible. 1012 to 1014 are drawing servers, 1021 to
1022 and 1031 are upper drawing servers, 1041 to 10
42 is a network, and 1051 to 1053 are drawing server management tables.

The application program 105 sends a drawing command or a tagged control value to the uppermost upper drawing server 1031. The upper drawing server of each layer is
It holds drawing server management tables 1051 to 1053 indicating which drawing server is directly below itself and which area of world coordinates it is responsible for.

The data thus sent is sent to an appropriate upper drawing server in the next layer. The upper drawing server to which the data is sent similarly sends the data to the upper drawing server in the next layer. By repeating the same process, the data is finally sent to the drawing server that directly manages the display and the data is drawn.

By adopting such a hierarchical structure, the load on the upper drawing server is distributed.

Next, a process monitoring system using this multiple display management device will be described with reference to FIG. FIG. 13 is an external view of the process monitoring system,
Reference numeral 1101 is a large-screen display combining a plurality of displays, 1121, 1122, 1123 are monitoring consoles, and 1131, 1132, 1133 are monitoring personnel.

Regular process system monitor 1131
A plurality of persons 1132 and 1133 perform monitoring work.
Each monitor is a separate monitoring console 1121,112
2, 1123 is in charge. At this time, commonly necessary information is displayed on the large screen display 1101.

The display is mainly a block diagram of the plant and information on control values from devices and sensors. The configuration diagram of the plant is displayed using graphic primitives across multiple displays so that it is easy to see.

During the surveillance work, the surveillance staff may want other people to see the screen he or she is looking at and hear his / her opinion. At this time, the screen number of the screen the user is looking at and the display coordinates on the large screen are specified and sent to the application program.

The application program searches the background graphic memory main file from the received screen number,
The graphic elements are taken out one by one, moved in parallel with the given coordinates, and sent to the upper drawing server. The upper drawing server allocates a drawing command to each drawing server.

As described above, an observer can display his or her own screen on a large screen, but using a large screen unnecessarily may cause a safety problem. In such a case, a mode in which the application program accepts the request to display the monitor screen and a mode in which the request is not accepted are provided. As a result, when the system is in an emergency state, it is possible to set the mode so that it is not accepted and not display it.

Next, another embodiment of the present invention will be described with reference to FIG. In this embodiment, the system configuration does not have the management server in the above embodiment. In the figure, each drawing server has its own local coordinate system in world coordinates in the coordinate management information storage units 1401-1403. Note that the world coordinates here indicate where the display object is displayed when the display group is regarded as one group. For example, a coordinate system in which the lower left corner of the display group is the origin and the upper right corner is the maximum point is possible. As the contents of the coordinate management information, the range of world coordinates (xw, yw), the origin of the local coordinate system when viewed from the origin of the world coordinates (xL0, yL0)
And the range (xL, yL) are set. When displaying, the application program sends drawing data to all drawing servers as drawing commands by using the broadcast mechanism. The drawing server refers to the coordinate management information storage unit, cuts out from its drawing range (xL0, yL0) to (xL, yL), which is its drawing range, by clipping and draws it. Execute as a command. According to this embodiment, it is possible to manage a plurality of displays without providing a centralized management mechanism called a management server. Further, with such a configuration, if the drawing server is instructed to change the clipping region after drawing once, the screen can be changed without sending the drawing data again.
For example, when a command is issued to each drawing server to shift all clipping regions to the left, the contents of the screen are scrolled to the right. By a method similar to this,
It is also possible to replace the display content of each display, display the same content, and add image processing such as mosaic processing.

Further, another embodiment of the present invention will be described with reference to FIG. In this embodiment, not only graphic data but also video moving images can be displayed on a plurality of screens. In the figure, image synthesizers 1501 to 15
Reference numeral 03 is provided for each display, and a video moving image sent from the image management device 1511 and drawing data sent from each drawing server are combined and displayed on each display. Several video sources 1521 and 1522 are connected to the video management apparatus, and the video management apparatus can freely select these and send them to the video composition apparatus. Since the video moving picture is combined with the drawing data in the image synthesizer, the parameters can be set. This is the display position, brightness, saturation, chromaticity, chroma value, etc. of the video moving image in the display. First, the case of a video moving image that is displayed only on a certain display will be described. For example, when the image is displayed only on the display 1, the upper drawing server is displayed from the application program.
The drawing data is specified in the bar, the image source is specified,
Sends the combination of drawing data and the display position in world coordinates. The upper drawing server allocates the drawing data corresponding to each drawing server, specifies the image source to the image management device, sets the parameters of the combination with the drawing data, and the world coordinates. Send the display position by. The video management device first selects the designated video source. Next, the drawing data passed from the upper drawing server to all video synthesizers.
Set the parameters in combination with the parameter. Next, referring to the drawing server management table of the upper drawing server, it is checked which display corresponds to what position in the whole. Based on this, the world coordinates of the image are converted into the local coordinates of each display and set in each image synthesizer.

[0075]

According to the present invention, when displaying on a plurality of displays, it is possible to save the trouble of preparing display data for a plurality of screens, and the display data is divided regardless of the number of displays. Such expandability is also guaranteed. Further, according to the present invention, display control for a large screen display becomes easy.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a display state of a screen according to an embodiment of the present invention.

FIG. 3 is a diagram showing a structure of a drawing server management table.

FIG. 4 is a diagram showing a structure of a tag database.

FIG. 5 is a diagram showing an example of performing communication from a higher-level drawing server using a plurality of network interfaces.

FIG. 6 is a diagram showing a structure of an importance level setting table.

FIG. 7 is a system configuration diagram when an importance setting table is used.

FIG. 8 is a diagram showing the structure of an importance setting table with count.

FIG. 9 is a configuration diagram of another embodiment of the present invention.

FIG. 10 is a configuration diagram when upper drawing servers are hierarchically connected.

FIG. 11 is a flowchart showing a processing flow when displaying graphic data.

FIG. 12 is a flowchart showing a processing flow when a control value is displayed on the screen.

FIG. 13 is a system configuration diagram when the present invention is applied to a plant monitoring system.

FIG. 14 is another embodiment having no management server.

FIG. 15 is a system configuration diagram illustrating another embodiment of the present invention.

[Explanation of symbols]

111-113 ... Display, 21, 122, 123
... drawing server, 103 ... network, 104 ... upper drawing server, 105 ... application program, 6 ...
External device / sensor group, 181 ... Background graphic storage local file, 182 ... Drawing server management table, 183 ... Background graphic storage main file, 184 ... Tag database, 2
01, 202, 203 ... Rectangular figure, 204, 205 ... Tag, 701 ... Importance setting local file, 702 ... Importance setting main file.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kimiya Yamafoot 4026 Kujimachi, Hitachi City, Hitachi, Ibaraki Prefecture Hitachi Research Laboratory, Ltd. (72) Masayasu Futagawa 4026 Kujicho, Hitachi City, Ibaraki Japan Hitachi Research Laboratory (72) Inventor Masato Hotta 4026 Kujicho, Hitachi City, Ibaraki Prefecture Hitachi Research Laboratory, Hitachi, Ltd. (72) Inventor Atsuhiko Nishikawa 5-2-1 Omikacho, Hitachi City, Ibaraki Hitachi, Ltd. Omika Plant (72) Inventor Atsuhiko Hirota 52-1 Omika-cho, Hitachi City, Ibaraki Prefecture Hitachi Ltd. Omika Plant, Hitachi, Ltd. (72) Inventor Shinya Yato 4026 Kuji-cho, Hitachi City, Ibaraki Japan Tachi Works Hitachi Research Laboratory

Claims (11)

[Claims] 1. A large-screen display capable of displaying a large amount of display information, a plurality of drawing servers that divide the large screen into a plurality of areas, and control the display of the divided areas, and a plurality of the plurality of drawing servers. A display control system comprising: a management server that manages a drawing server. 2. The display control system according to claim 1, further comprising a drawing server management table for holding a relationship between coordinate information indicating a position of each of the divided areas on the large screen display and each of the drawing servers. The display control system is characterized in that the management server divides information to be displayed on the large screen display by using the drawing server management table and transfers the divided information to each of the drawing servers. 3. A plurality of displays, a plurality of drawing servers for controlling the display of information on each of the displays, and a plurality of drawing servers for displaying at least a large amount of one piece of information using the plurality of displays. And a management server for managing the display. 4. The display control system according to claim 3, further comprising a drawing server management information storage unit for holding a relationship between coordinate information indicating a display area of each display and each drawing server, wherein the management server is A display control system, characterized in that a large amount of one piece of information is divided by referring to a management information storage unit and transferred to each of the drawing servers. 5. The display control system according to claim 4, further comprising an importance setting storage section for storing a preset importance for each piece of information to be displayed on the plurality of displays, wherein the management server is configured to execute the important information. If the importance of the display information to be transferred to each of the drawing servers is high and the information overlaps the boundaries of a plurality of displays, the display position is corrected and the divided display information is referred to by referring to the display setting storage unit. A display control system, wherein the display control system transfers to each of the drawing servers. 6. The display control system according to claim 5, wherein the degree of importance stored in the degree-of-importance setting storage unit depends on a frequency at which the information stored in the storage unit is transferred to the plurality of drawing servers. A display control system characterized by being updated. 7. A plurality of displays and a plurality of drawing servers for controlling display of information on each of the displays, one drawing server of the plurality of drawing servers using at least the plurality of displays. A display control system for managing the plurality of drawing servers so as to display a large amount of one piece of information. 8. The display control system according to claim 7, further comprising a drawing server management information storage unit for holding a relationship between coordinate information indicating a display area of each display and each drawing server, The display control system, wherein one of the drawing servers refers to the management information storage unit and divides the one large-capacity information and transfers it to each of the drawing servers. 9. A display control system for displaying information using a plurality of displays, wherein the position of a display object displayed on the plurality of displays based on information input from an external device connected to the system. A display control system characterized by determining a relationship. 10. A display control system comprising a plurality of displays and a display control device for controlling display of information on the display, wherein the display control device is aware that important information has been displayed. Based on the judgment result by the important information notifying means, the display object position recognizing means for judging at which position on the screen of the plurality of displays the information recognized by the important information notifying means is present, And a display object position changing means for changing the position of the information. 11. A large screen display comprising a plurality of displays for displaying a configuration diagram of a plant to be monitored or information on control values from sensors and the like in the plant, and inputting instructions to the plant to be monitored. A process monitoring system having a plurality of monitoring consoles, comprising a drawing server for controlling the information input from the respective monitoring consoles to be divided and displayed on the plurality of displays based on the position where the information should be displayed. A process monitoring system characterized in that