JP3115068B2 - Screen display control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen display control device for a process console, which is positioned as a man-machine interface of a process control device for controlling and monitoring various plants such as a steel manufacturing plant, a food manufacturing plant, and a pulp and paper manufacturing plant. About.

[0002]

2. Description of the Related Art Conventionally, in various plants, the operating state of the plant is generally monitored by a process console equipped with a CRT display device.

[0005] A process console used for monitoring such a plant has a configuration shown in FIGS. 5 and 6. A console housing 1 is provided with a CRT display device 2, a keyboard 3, and a control unit 4. And on the keyboard 3,
As shown in FIG. 7, a scroll key 5, a freely assigned numeric keypad 6, a numeric input numeric keypad 7, an enlarged display key 8, a reduced display key 9, and the like are provided.

[0004] Since a plant managed by such a process console is large-scale, it is often difficult to display the entire process flow on one CRT display device 2. Conventionally, the entire process flow screen is divided and created, or a screen of 2 to 4 times size and an interrupt screen of a fixed size are created, and the normal display 10 and the normal display 10 are displayed on the screen of the CRT display device 2 as shown in FIG. An interrupt display 11 is provided.

[0005]

However, in the conventional screen display control device of the display device, when the interrupt display 11 is performed, the display size is determined from the beginning regardless of the configuration of the normal screen 10. Since the image is displayed at the determined coordinate position, there is a problem that a part of the original normal screen 10 behind the interrupt screen 11 becomes invisible due to the display of the interrupt screen 11 as shown in FIG.

Further, since the back screen becomes invisible, there is also a problem that when the back screen is desired to be viewed, a troublesome operation of moving the interruption screen 11 or scrolling the back normal screen 10 is required. Was.

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem. When a display is performed in an interrupt display format, the configuration of the screen currently being displayed is automatically recognized and the display size of the interrupt screen is displayed. It is another object of the present invention to provide a screen display control device in which a display position can be displayed according to the size and position of an empty area of a normal screen.

[0008]

A screen display control device according to the present invention includes a display device for displaying process information on a screen, a screen display control unit for generating screen information to be displayed on the display device, and an interrupt screen display command. On the other hand, the display screen of the process information displayed by the display device is divided and divided.
Calculate the screen density of the screen, the screen density is less than a predetermined value
Repeat the screen density calculation until a low area is found.
Screen when the screen density falls below the reference value
A screen recognition control unit that uses the size and display coordinates as an empty area, and an interrupt screen display control unit that processes the empty area determined by the screen recognition control unit into a size that matches the area and displays an interrupt screen. It is provided.

[0009]

In the screen display control device according to the present invention, when an interrupt screen display command is input, the screen recognition control unit displays a normal process information table displayed on the screen of the display device.
To divide the shows screen, to calculate the screen density of the divided screen, this
Until an area where the screen density is lower than the predetermined value is found.
Repeat the calculation of the screen density with
Determine the screen size and display coordinates when it becomes a free area
Then , the interruption screen display control unit enlarges or reduces the interruption screen to fit the area of the empty area,
It is displayed at the position of the empty area.

[0010] In this way, when it is necessary to display an interrupt screen on the process information display screen, the interrupt screen is displayed so as not to overlap the original display screen.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

The screen display control device of the present invention is a function realized by a software program incorporated in the control unit 4 in the console 1 for process monitoring shown in FIGS. 5 to 7 as a general layout. FIG. 1 shows a functional block diagram of one embodiment.

As shown in FIG. 1, the screen display control device of this embodiment comprises a CRT display device 21, a CRT display control CPU 22 for controlling the display of the CRT display device 21,
A video RAM 23 for storing image information of the display screen of the RT display device 21; a screen recognition control unit 24 for recognizing a free area of the display screen from the information stored in the video RAM 23; The CRT display device 21 includes a magnification calculation control unit 25 that calculates a magnification required to enlarge or reduce the interrupt display screen, and a screen display control unit 26 that performs overall control of the screen display of the CRT display device 21.

Next, the operation of the screen display control device having the above configuration will be described.

As shown in the flowchart of FIG. 2, when an interrupt screen display request is input by an operation command from the operator, the CRT display control CPU 22 inputs the image of the currently displayed process monitoring screen including the interrupt screen. Then, the lit portion is set to "1", and the unlit portion is set to "0", stored in the video RAM 23 as screen display image data in a bit format, and outputs a screen recognition command to the screen recognition control unit 24 (step). S
1).

The screen recognition control unit 24 includes a video RAM 2
3. Based on the bit-format screen display image data stored in 3, the currently displayed screen is divided into two so as to have an interrupt display arrangement as shown in FIG. Calculate the screen density of both, and further divide the lower screen density into two, and calculate the screen density in the same way until the area where the screen density is lower than the reference value is found. Iteratively, the screen size and the display coordinates when the value becomes equal to or less than the reference value are automatically found as empty areas (steps S2 and S3).

Subsequently, the screen display area size of the empty area is compared with the actual display size of the interrupt display screen, and a reduction ratio or an enlargement ratio is calculated so that the interrupt display screen becomes the area size of the empty area. And the magnification calculation control unit 25
A display screen creation command is output to the user (step S
4).

The magnification calculation control unit 25 enlarges or reduces an arbitrary display screen specified by the screen recognition control unit 24 at a specified screen display scale, and automatically changes an interrupt display screen of a specified screen size. The display command is created and output to the screen display control unit 26 together with the display coordinates (step S5).
S6).

As a result, the screen display control unit 26
Alternatively, as shown in FIG. 4, the interruption process 11 is displayed on the normal process monitoring screen 10 of the CRT display device 2 by processing the designated space into the designated size (step S7).

In the above embodiment, the interrupt screen 11 is displayed at two places on the normal screen 10. However, the number of the interrupt screen 11 may be one, or three or more. Not something.

The display device is not limited to a CRT display device but may be a flat display such as a liquid crystal display device.

[0022]

As described above, according to the present invention, when an interrupt display is performed on the normal display screen for process monitoring, the configuration of the screen currently displayed is automatically recognized, and the size and position that can be displayed are automatically determined. It is possible to determine and display the interrupt screen so that the layout becomes the most effective screen layout, and to solve the problem of displaying the interrupt screen by overlapping the original screen as in the conventional case. Can,
In addition, the inconvenience of having to perform a scroll operation to view the hidden original screen can be eliminated, and a process monitoring function can be improved and operability can be improved.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of one embodiment of the present invention.

FIG. 2 is a flowchart illustrating the operation of the embodiment.

FIG. 3 is an explanatory diagram showing one mode of an interrupt screen display according to the embodiment.

FIG. 4 is an explanatory diagram showing another aspect of the interrupt screen display according to the embodiment.

FIG. 5 is a front view of a general process monitoring console.

FIG. 6 is a side view of the process monitoring console.

FIG. 7 is a layout of a keyboard of the process monitoring console.

FIG. 8 is an explanatory diagram showing a conventional interrupt screen display mode.

[Explanation of symbols]

 Reference Signs List 1 console housing 2 CRT display device 3 keyboard 4 control unit 10 normal screen 11 interrupt screen 21 CRT display device 22 CRT display control CPU 23 video RAM 24 screen recognition control unit 25 magnification calculation control unit 26 screen display control unit

Claims (1)

(57) [Claims] 1. A display device for displaying process information on a screen, a screen display control unit for generating screen information to be displayed on the display device, and process information displayed on the display device in response to an interrupt screen display command Split the display screen of
Screen density is calculated, and said screen density is lower than a predetermined value.
Repeat the calculation of the screen density until an area is found
The screen size when the screen density falls below the reference value
A screen recognition control unit for setting the size and display coordinates to an empty area, and an interrupt screen display control unit for processing the empty area determined by the screen recognition control unit to a size corresponding to the area and displaying an interrupt screen. Screen display control device provided.