JPH06102851A - Plural screens display device - Google Patents

Abstract

PURPOSE:To realize the same operability as that of a singe display screen by scrolling each display screen in linking state, while moving a cursor across boundaries between respective display screens. CONSTITUTION:In a plural screens display device which receives a instruction for screen display of an object screen and displays display data of the object screen with plural display screens, this device is provided with a screen memory in which display data of the object screen is divided so as to correspond to plural display screens and stored as unit display data respectively, a picture making section 3 which writes and updates each unit display data in the screen memory based on data inputted externally, a display data fetching section 5 which fetches each unit display data from the screen memory based on the instruction for screen display, and screen display sections 6a-6c which receives individually each unit display data fetched from the display data fetching section 5 and performs display processing in each display screen.

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 used in, for example, an instrumentation control system for displaying and monitoring necessary points and process states of process instrumentation on a plurality of display screens. The present invention relates to a multi-screen display device provided with a technique of scrolling each display screen in conjunction with each other and freely moving a cursor between the display screens.

[0002]

2. Description of the Related Art Conventionally, in the field of instrumentation control, it has not been performed to monitor a change in the state of a plant using a large screen. However, since the announcement of large-screen televisions using projectors in the field of home appliances, there has been a growing demand for monitoring using large screens in the field of instrumentation control.

In the case of such a large screen for instrumentation control, it is possible to provide necessary information to a plurality of operators at the same time, and the plant flow and the related information displayed on a small screen until now. It has the advantage that the screen can be displayed in large detail. By the way, as a large screen of this kind is used, a demand for displaying more plant flows and related screens gradually arises.

Recently, as a technique for satisfying this demand, in order to display a screen to be displayed (hereinafter, referred to as a target screen) in a large size, a plurality of display screens for displaying the target screen in several parts are used. By controlling each display screen individually by each screen controller, a multi-screen display device that displays a large target screen has been used.

In such a multi-screen display device, the size of the display screen of the conventional system can be increased and at the same time, the number of display screens can be combined in accordance with the user's request and the like, which facilitates the realization of a large-scale system. .

[0006]

However, in the multi-screen display device as described above, each screen controller individually controls the display screens, and therefore the scroll operation can be performed only for each display screen, and the display screens are combined. There is a problem that the target screen cannot be scrolled in conjunction with each other.

Further, when the cursor is desired to be moved, this multi-screen display device is a mere collection of the display screens, and therefore the cursor can be moved only within one display screen, so that the target can be moved on a single display screen. There is a problem that the operability is poor compared to the case of displaying a screen.

Further, in this multi-screen display device, since each screen controller does not support a plurality of screens, when the display screens are connected, the edges of the display screens are displaced, and the connected target screens are accurately displayed. There is a problem in that it is technically difficult to display in.

Further, this multi-screen display device is technically difficult to display the target screen and the interlocked scrolling of the screen when the double screen or the quadruple screen is displayed for the same reason, and the target screen is displayed. When switching, there is a problem that it takes time and labor because switching is performed for each display screen.

The present invention has been made in consideration of the above situation, and a plurality of display screens can be interlocked with each other to be scrolled, and the cursor can be moved across a boundary between the display screens to display a single display screen. An object is to provide a multi-screen display device that realizes equivalent operability. Another object of the present invention is to provide a multi-screen display device capable of easily switching the display of a target screen by controlling a plurality of screen controllers.

[0011]

According to a first aspect of the invention, in a multi-screen display device for displaying display data of a target screen on a plurality of display screens, the display data of the target screen corresponds to the plurality of display screens. When the screen memories are divided correspondingly and are respectively stored as unit display data, and the update display data belonging to the display data is received from the outside, each unit display in the screen memory is based on the update display data. Screen creating means for writing and updating data, display data fetching means for fetching each unit display data from the screen memory when a screen display command is received from the outside, and each unit fetched by the display data fetching means A multi-screen display device provided with a plurality of screen display means for individually receiving display data and executing display processing on each display screen. It is.

According to a second aspect of the invention, a plurality of command input means for individually inputting a screen display command and a screen selection command, a plurality of data input means for individually inputting display data received from the outside, Based on the screen display command from the command input means and the display data from the data input means, a plurality of unit display data corresponding to each display screen of the target screen stored in advance are written and updated, and each unit display data is Based on a screen selection command for selecting a target screen, which is given from a plurality of screen controllers for individually transmitting the screens, and a command input unit of the command input units or a screen controller of the screen controllers. , Select one of the screen controllers, and select each unit display data given from this selected screen controller. And display data selection means for a plurality of screens display device in which a plurality of selection screen display means for individually displaying the respective unit display data selected on the display screen by the display data selection means.

[0013]

Therefore, in the invention according to claim 1, by taking the above means, in the screen memory in the screen controller, the display data of the target screen is divided in advance corresponding to each display screen, and each unit is divided into units. Since it is stored as display data, the screen creating means writes and updates each unit display data in the screen memory based on the update display data received from the outside, and the display data extracting means,
Each unit data can be retrieved from the screen memory based on the screen display command.

As a result, the plurality of screen display means receives each unit display data extracted by the display data extracting means and individually displays the display data on each display screen, so that a plurality of display screens can be displayed by the screen controller corresponding to the plurality of screens. Can be scrolled in conjunction with each other, and the cursor can be moved across the boundaries between the display screens, so that operability equivalent to that of a single display screen can be realized.

Further, in the invention corresponding to claim 2, a plurality of screen controllers are provided, and the display data selection means is based on a screen selection command of the target screen given from a certain command input means or a certain screen controller. Of the screen controllers, one of the screen controllers is selected, and each display data given from the selected screen controller is selected. In each of the plurality of selection screen display means, each display data selected by the display data selection means is individually displayed on each display screen. Therefore, it is possible to easily switch the display of the target screen by controlling the plurality of screen controllers. You can

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a first embodiment of a multi-screen display device according to the present invention. In this multi-screen display device, the target screen is divided into the same number of unit screen areas as the display screen in advance, and the display data of the target screen is divided corresponding to each unit screen area and stored as unit display data. A screen memory 1 is provided. Note that, here, for convenience of description, three display screens are illustrated, and for example, a schematic diagram of the control system as shown in FIG. 2 is stored in three unit display areas.

Further, the multi-screen display device is provided with a predetermined screen memory 1 for each of the update display data 2a to 2c such as the monitoring data of the control system received from the data input unit 2 and each of the update display data 2a to 2c. Screen creating section 3 for writing and updating each unit display data in the screen memory 1 based on the address number of the screen memory, and command input section 4 for inputting various commands such as a screen display command for displaying the target screen.
And a display data extracting unit 5 for extracting each unit display data from the screen memory 1 based on the screen display command received from the command input unit 4.

Further, the multi-screen display device performs a process of individually receiving each unit display data from the display data extracting unit 5 and sending it out as an image signal.
a to 6c and a plurality of large screen display devices 7a to 7c for individually receiving the image signals from the screen display units 6a to 6c and displaying the image signals on the respective display screens to display one target screen for each part. It is configured with and. Therefore, one target screen is accurately linked and displayed on the plurality of large screen display devices 7a to 7c. The screen memory 1, the screen creation unit 3, the display data extraction unit 5, and the screen display units 6a to 6c constitute a screen controller 8. Next, the operation of such a multi-screen display device will be described.

First, in the screen memory 1, each unit display data representing each part of the target screen is individually stored in each unit screen area in advance. The unit display data of these unit screen areas is stored in the data input section 2. Update display data 2 given by
It is designed to be sequentially updated based on a to 2c.

In this state, when a screen display command is input from the command input unit 4, the display data fetching unit 5 sequentially fetches unit display data from each unit screen area of the screen memory 1 and corresponding screen display units 6a to 6a. 6c.

Here, when each of the screen display units 6a to 6c receives the unit display data from the display data extracting unit 5, after converting the unit display data into an image signal, the corresponding large screen display devices 7a to 7c.
Send to. The large screen display devices 7a to 7c individually receive image signals from the corresponding screen display units 6a to 6c,
Display on each display screen.

That is, a plurality of large screen display devices 7a-7
c individually displays each unit display data stored in one screen memory 1 to display one target screen.

As described above, in the multi-screen display device of the first embodiment, the screen memory 1 is divided in advance into the same number of unit screen areas as the display screens, and the display data of the target screen is divided into the unit screen areas. Each unit display data in the screen memory 1 is written in the screen creation unit 3 based on the input of the update display data 2a to 2c from the data input unit 2 in correspondence with each unit. On the other hand, while updating, the display data extracting unit 5 extracts each unit data from the screen memory 1 based on the screen display command and sends it to each screen display unit 6a to 6c.

Here, since the screen display units 6a to 6c execute the display processing on each display screen based on each unit display data individually received from the display data extracting unit 5,
You can scroll by linking multiple display screens,
The cursor can be moved across the boundaries between the display screens, and operability equivalent to that of a single display screen can be realized.
Moreover, since this multi-screen display device has a plurality of display screens, it has a single screen memory, so that it is possible to easily display the correctly connected target screens.

Next, a second embodiment of the multi-screen display device according to the present invention will be described with reference to FIG. This multi-screen display device has a plurality of command input units 11a to 11g for individually inputting various commands and a plurality of data input units 12a to 12c for individually inputting various data such as display data of a target screen. It is provided.

This command input unit is, for example, the mouse 11a,
Trackballs 11b and 11c, touch panel 11d-
11f, remote control transmitter 11g, and remote control receiver 1
1h or the like is used. Among them, touch panel 11d ~
11 f is provided on the screen of the CRT, the mouse 11 a and touch panel 11 f are on the screen controller 13 a, the trackball 11 b and touch panel 11 e are on the screen controller 13 b, and the trackball 11 c and touch panel 1 are.
1d includes a screen controller 13c and a remote control receiver 11
Each h is connected to the screen selection unit 14.

Further, the screen controllers 13a to 13c
As shown in FIG. 4, the screen memory 21a shown in FIG.
The screen creation unit 22a, the display data extraction unit 23a, and the screen display units 24a, 24b, and 24c are added with a status detection unit 25a, and the command input units 11a to 1a.
Based on the command from 1g and the data from the data input sections 12a to 12c, the unit display data for displaying the target screen to be stored in advance in each unit display area in association with the divided display on each display screen is updated. A status in which each of these unit display data is individually transmitted as each image signal, and the screen state can be identified by specifying the screen content, the presence or absence of screen enlargement, etc., and the screen display content such as the enlarged location from each image signal. It has the function of transmitting signals.

Here, the status detecting section 25a has a function of detecting the screen state from the image signal of the display data extracting section 23a according to the screen display command given from the mouse 11a and the touch panel 11f, and the detected screen state is It is given to the screen selection unit 14 as a signal.

Further, the peripheral structure of such a screen memory in the screen controller can be explained with a schematic diagram shown in FIG.
That is, the screen controller 13a uses the graphic LS
When the screen display command is given to the display data extracting section in I30 by a mouse or the like, the DT / OE of the screen memory 21a is displayed.
A data transfer signal is applied to the terminals 31a to 31c. As a result, the display data fetching section is able to
Each unit display data in 2a to 32c is taken out. Then, each of these unit display data is converted into an image signal through any one of the color palettes 33a to 33c for adjusting the color tone, and is given to the screen selection unit 14 through any of the connectors 34a to 34c. . In addition,
Each screen display unit is provided in the graphic LSI 30.
Each of these screen display parts has color palettes 33a to 33c.
Control individually.

The status detecting section in the graphic LSI 30 gives a status signal to the screen selecting section 14 together with these image signals. That is, when viewed from the graphic LSI 30, the number of screen memories 21a is one, and each image signal and status signal are transmitted from one screen memory 21a.

A video RAM or the like is used as the screen memory 21a. Further, the other screen controllers 13b and 13c are also the screen controller 1
It has the same configuration as 3a.

Further, the screen selection unit 14 selects one of the screen controllers 13a to 13c based on the screen selection command received from a certain command input unit and the status signal.
It has a function of selecting any one of the screen controllers and selecting each unit display data as each image signal given from the selected screen controller.

The large screen display devices 15a to 15c and the CRTs 16a to 16c individually display the respective unit display data as the respective image signals selected by the screen selection unit 14 on the respective display screens. Next, the operation of such a multi-screen display device will be described.

First, the mouse 11a and the trackball 1
A screen display command is input to the screen controllers 13a to 13c by a command input unit such as 1b or 11c. Also, each unit display data in the screen controllers 13a to 13c is
The display data is written and updated by inputting display data from the data input units 12a to 12c, and sent to the screen selection unit 14 as each image signal. Furthermore, the screen controller 13a
In 13c, a status signal is sent to the screen selection unit 14 together with the image signal.

In this state, an operator's operation gives a screen selection command from the remote controller transmitter 11g to the screen selector 14 via the remote controller receiver 11h. Here, when the screen selection unit 14 receives a screen selection command from the remote control receiver 11h, each of the screen controllers 13a to 13a.
By referring to each status signal given from 13c, for example, the screen controller 13c designated by the screen selection command is selected.

Further, the screen selecting section 14 selects the screen controller 13c and also selects each unit display data as each image signal from the screen controller 13c. Then, the large screen display devices 15a to 15c and C
In the RTs 16a to 16c, each unit display data as each image signal selected by the screen selection unit 14 is individually displayed on each display screen, and the target screen represented by each unit display data is displayed. indicate.

In this state, when a screen selection command for selecting another screen is given from the remote control transmitter 11g to the screen selection unit 14 via the remote control receiver 11h by the operator's operation, this screen selection unit At 14, for example, the screen controller 13a having a screen memory having the contents designated by the screen selection command is selected by referring to each status signal.

Therefore, the large screen display devices 15a to 15c and C which are displaying the image signal from the screen controller 13c.
In RTs 16a to 16c, the target screen based on each image signal from the screen controller 13a newly selected by the screen selection unit 14 is displayed instead of the current display.

As described above, the multi-screen display device of the second embodiment is provided with a plurality of screen controllers, and the screen is displayed based on the screen selection command given from the remote control transmitter 11g through the remote control receiver 11h. The selection unit 14 selects a screen controller 13a among the screen controllers 13a to 13c, selects each unit display data given as an image signal from the selected screen controller 13a, and selects each large screen display device 15a to 15c. As a result, since each unit display data as the image signal selected by the screen selection unit 14 is individually displayed on each display screen, it is possible to easily switch the target screen by controlling the plurality of screen controllers 13a to 13c. it can.

Further, since this multi-screen display device uses the screen memory described in the first embodiment, each display screen can be scrolled in conjunction with each other and the respective displays can be scrolled as in the first embodiment. You can move the cursor across the boundaries between screens.

In the first embodiment, the update display data 2
Although the case where a to 2c are part of the unit display data in the screen memory 1 has been described, the present invention is not limited to this, and the update display data and the unit display data in the screen memory 1 are the same, such as in a captured image. However, the present invention can be implemented in the same manner.

Further, the second embodiment is a large screen display device 1.
5a to 15c and CRTs 16a to 16c with a touch panel
Although the case where the same screen is displayed has been described above, the present invention is not limited to this, and in order to facilitate the monitoring control of the system, the large screen display devices 15a to 15c are displayed by the screen selection command input to the screen selection unit 14. CRT1 with touch panel
The present invention can be implemented in the same manner even when 6a to 16c are configured to display different screens such as a related screen and an enlarged screen.

In the second embodiment, the screen controller 1 refers to the status signal by inputting the screen selection command.
Although the case of selecting 3a to 13c has been described, the present invention is not limited to this, and a screen selection command for directly designating the screen controllers 13a to 13c is input to the screen selection unit 14 without referring to the status signal. The present invention can be similarly implemented with a configuration in which each image signal is switched.

The second embodiment has been described with respect to the case where the remote control receiver 11h as the command input unit inputs a screen selection command to the screen selection unit 14, but the present invention is not limited to this, and the mouse 11a or the like may be used. The present invention can be implemented in the same manner even if the screen input command is input from the command input unit to the screen selection unit 14 via the screen controller 13a or the like.

In the second embodiment, the case where the screen selection unit 14 selects each image signal as each unit display data has been described, but the present invention is not limited to this, and the screen selection unit 14 selects each unit display data. The present invention can be implemented in the same manner even when each screen display unit converts each unit display data into each image signal after selection.

In the second embodiment, the case where the screen controller of the first embodiment is used has been described, but the present invention is not limited to this, and even if a screen controller having another configuration is used, the screen can be easily displayed. Can be switched, and the present invention can be similarly implemented. In addition, the present invention can be variously modified and implemented without departing from the scope of the invention.

[0048]

As described above, the present invention has the following effects.

According to the invention of claim 1, the display data of the target screen is divided and stored in a single screen memory, and each of the stored unit display data is individually displayed on a plurality of display screens. Since the target screens are linked and displayed, multiple display screens can be linked and scrolled, and the cursor can be moved across the boundaries between each display screen to achieve the same operability as a single display screen. It is possible to provide a multi-screen display device.

According to the second aspect of the present invention, when a screen selection command for selecting a desired target screen is input, the display data selection means selects a screen controller corresponding to the target screen from a plurality of screen controllers based on the screen selection command. Is selected, and each unit display data from the selected screen controller is individually displayed on multiple display screens and the target screens are linked and displayed, so multiple screen controllers are controlled to display the target screens. It is possible to provide a multi-screen display device that can be easily switched.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram of a screen memory according to the same embodiment.

FIG. 3 is a configuration diagram showing a second embodiment of a multi-screen display device according to the present invention.

FIG. 4 is a configuration diagram of a screen controller in the embodiment.

FIG. 5 is a schematic diagram of a peripheral configuration of a screen memory in a screen controller in the same embodiment.

[Explanation of symbols]

1, 21a ... Screen memory, 2, 12a-12c ... Data input section, 3, 22a ... Screen creation section, 4 ... Command input section,
5, 23a ... Display data extracting section, 6a to 6c, 24a to
24c ... Screen display unit, 7a to 7c, 15a to 15c ... Large screen display device, 8, 13a to 13c ... Screen controller, 14 ... Screen selection unit, 25a ... Status detection unit.

Claims (2)

[Claims] 1. A multi-screen display device for displaying display data of a target screen on a plurality of display screens, wherein display data of the target screen is divided so as to correspond to the plurality of display screens, and each is stored as unit display data. And a screen creating means for writing and updating each of the unit display data in the screen memory based on the updated display data when the updated display data belonging to the display data is received from the outside. When a screen display command is received from the display memory, display data extracting means for extracting each unit display data from the screen memory and each unit display data extracted by the display data extracting means are individually received, A multi-screen display device comprising: a plurality of screen display means for executing display processing. 2. A plurality of command input means for individually inputting a screen display command and a screen selection command, a plurality of data input means for individually inputting display data received from the outside, and a screen display from the command input means. A plurality of unit display data corresponding to each display screen of the target screen to be stored in advance based on the command and the display data from the data input unit are written and updated, and a plurality of unit display data which are individually transmitted. Based on a screen controller and a screen selection command for selecting a target screen given from a command input unit of the command input units or a screen controller of the screen controllers. Display data selecting means for selecting and selecting each unit display data given from the selected screen controller And a plurality of selection screen display means for individually displaying the respective unit display data selected by the display data selection means on each display screen.