JPH06102859A - Picture display control device - Google Patents

Abstract

PURPOSE:To provide a picture display control device which can change displaying at high speed and effectively with simple processing procedure. CONSTITUTION:A picture display control device which superimposes a sub-screen on a base screen displayed is provided with a first memory plane 4a which has capacity being capable of storing display data of one screen and from which stored data is outputted to a display device, a memory 4 for display including a second memory plane 4b which has capacity being capable of storing display data of one screen, a display control means which stores the display data in the first and the second memory plane when display about the base screen is performed and stores the display data in the first memory plane when display about the sub-screen is performed, and a deletion control means which transfers and stores stored data of the second memory plane corresponding to a deletion region of sub-screen to a corresponding storing region of the first memory plane and performs deletion processing when after the sub-screen is displayed on the base screen and it is deleted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a display such as a CRT, a plasma display, an EL element, etc., and displays graphics, graphs, characters, images, etc. on a display screen according to information input from the outside or internal processing information. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display control device capable of changing a part or all of a display image, and particularly to a technique for changing an image at high speed and efficiently.

[0002]

2. Description of the Related Art Recently, CRTs, plasma displays,
An intelligent operation panel having a display function using a display such as an EL display, a communication function with a host computer, and an input function such as a touch panel has been put into practical use, and has been widely used in various fields including an information terminal in a production site. Used in the field.

One of these intelligent type operation panels
As one of the features, there is a function that the whole or a part of the figure once drawn can be easily changed by the data input by the communication function or the operation of the touch panel by the operator, and the calculation by the CPU inside the apparatus ( For example, JP-A-61-148489).

[0004]

By the way, in such a conventional technique, after changing a part of the screen initially displayed,
In order to display the first screen again, it is necessary to redraw the entire first screen from the beginning.

Further, after drawing the entire base screen first, the display of the partial small area is changed, and the whole screen is redrawn in order to return a part of the small area to the initial base screen. There is a need to.

Furthermore, after the display of the entire base screen is first drawn, the display change is executed twice for a part of the small area, and then the state where the change is made once is restored,
It is necessary to redraw the entire screen, and then to execute the first display change again. Here, in general, the drawing speed is proportional to the area of the drawing unit. Therefore, according to the above-described conventional method, it is necessary to redraw the first base screen when changing the display. There is a problem that it does not improve. Further, since the display change consisting of the above-mentioned plurality of processing steps usually has to be performed by the host computer to which the operation panel is connected, there is an adverse effect that the program of the host computer becomes complicated and there is a problem between the host computer and operation panel. There is a problem that the number of times of communication increases.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an image display control device capable of performing high-speed and efficient display change by a simple processing procedure.

[0008]

According to the present invention,
In an image display control device for displaying a sub screen in an overlapping manner on a base screen displayed on a display, the display data displayed on the display has a capacity capable of storing one screen, and the stored data is stored on the display. First output and display
A display memory including a memory plane and a second memory plane having a capacity capable of storing one screen of display data to be displayed on the display, and a display for the base screen when a display related to the base screen is performed. Display control means for storing data in the first and second memory planes and storing display data for the sub-screen in the first memory plane when a display relating to the sub-screen is performed; When erasing the sub-screen after displaying the sub-screen on the screen, the storage data of the second memory plane corresponding to the erasing area of the sub-screen is stored in the storage area corresponding to the erasing area of the first memory plane. An erasing control means for carrying out the erasing processing by transferring and storing is provided.

According to the invention, in addition to the first memory plane corresponding to the display contents of the display device on a one-to-one basis, the second memory plane for storing only the display data relating to the base screen is provided, and the erasing side relating to the sub-screen is provided. When the display change is performed, the erasing process is performed by transferring the storage data of the second memory plane corresponding to the erasing area of the sub-screen to the storage area of the first memory plane corresponding to the erasing area. I'm trying to do. That is,
The erasing process is performed by copying the required area of the base screen stored in the second memory plane to the first memory plane instead of redrawing the base screen from scratch as in the conventional technique.

Further, according to the present invention, a display including a base screen, a sub-screen superposed on the base screen, and a sub-sub-screen superposed on the base screen or the sub-screen is provided. In the image display control device performed as described above, a first memory plane having a capacity capable of storing one screen of display data to be displayed on the display unit and outputting the stored data to the display unit for display. A display memory including three memory planes, that is, a second memory plane and a third memory plane having a capacity capable of storing one screen of display data to be displayed on the display unit, and the base when the display related to the base screen is performed. The display data for the screen is stored in the first, second and third memory planes, and when the display related to the sub screen is performed, the display data for the sub screen is stored in the first And stored in the second memory plane,
Display control means for storing the display data of the sub-subscreen in the first memory plane when a display relating to the sub-subscreen is performed, and for erasing the subscreen after displaying the subscreen on the base screen A first erasing control means for performing the erasing operation by transferring and storing the storage data of the third plane corresponding to the erasing area of the sub-screen in a storage area corresponding to the display area of the first memory plane. When the sub-screen is displayed on the base screen and then the sub-screen is displayed on the sub-screen, and then the sub-screen is erased, the second area corresponding to the erase area of the sub-subscreen is displayed. A second erasing control means is provided for carrying out the erasing process by transferring the stored data of the plane to a storage area corresponding to the erasing area of the first plane.

According to the present invention, the display contents of the display device
Other than the first memory plane corresponding to 1 to 1
The second memory that stores the display data related to the surface and sub screen.
Only the display data related to the moly plane and base screen are recorded.
A third memory plane to be remembered is provided and related to the sub screen.
If the display on the erasing side is changed, the sub screen disappears.
The stored data of the third plane corresponding to the left area
Storage area corresponding to the display area of the first memory plane
The erase operation is performed by transferring and storing the
Before when the display change on the sub-sub screen is made on the erase side
Description of the second plane corresponding to the erase area of the sub-sub screen
Storage data corresponding to the erased area of the first plane
The erase process is performed by transferring and storing the data in the storage area.
I am trying to do it.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings.

FIG. 1 shows an example of the configuration when the present invention is applied to an intelligent operation panel. The intelligent operation panel 1 is connected to an external device 2 for controlling / monitoring a production line, controlling / monitoring a physical distribution, controlling / monitoring a disaster prevention / security system, monitoring a process of a plant, and displaying various statuses. It functions as an operation terminal for performing switch input.

The display unit 3 includes a CRT, a liquid crystal display,
Plasma displays, EL displays, etc.,
A display screen is displayed on the display unit 3 in which screen elements for displaying various states and inputting signals are arbitrarily combined. The display screen is composed of various graphics such as characters, figures, numerical values, and graphs.

The display memory 4 stores display data to be displayed on the display unit 3 in a bitmap format. In this case, the display memory 4 includes the first plane 4a, the second plane 4b, and the third plane. 4c has a memory capacity for 3 display screens.

These first to third planes have the following features.

(1) Each of the first to third planes has a memory capacity corresponding to each pixel of the display section 3 in a one-to-one relationship, and each memory stores dot data in bitmap format.

(2) The first to third planes are independent of each other and do not share the screen area. In addition, the roles of the screens described later do not change.

(3) The data stored in the first plane among the first to third planes is displayed on the display unit 3. That is, the stored content of the first plane and the display content of the display unit 3 are 1
It corresponds to one-to-one.

The image data displayed on the display unit 3 is classified into the following three categories. -Category A ... Base screen ..... The screen that is first displayed to perform a series of display operations and is generally displayed on the entire screen-Category B ... Sub screen ..... ... Display coordinates after the base screen is displayed Is reserved, or is displayed so that the whole or part of the base screen is changed at some timing in the form in which the display coordinates are indicated at the time of display.-Category C ... Sub-sub screen ... After the base screen is displayed or What is displayed so as to change a part of it after the sub-screen is displayed. Then, when the display content of the display unit 3 is changed, if the display or display change relating to the base screen of category A is performed, the display data is It is stored in all the first to third planes.

Further, when the display or display change regarding the sub-screen of category B is performed, the display data is the above-mentioned first data.
And stored in the second plane.

Further, when the display or display change regarding the display device of category C is performed, the display data is stored only in the first plane.

That is, the stored contents of the first plane are updated with the display data after the display change regardless of which display change of the categories A, B and C is performed.

When the display of the category A or B is changed, the second plane has its stored contents updated with the display data after the display change.

The stored contents of the third plane are updated with the display data after the display change only when the display of the category A is changed.

Next, a touch panel switch 5 is laminated on the display unit 3. The touch panel switch 5 has a plurality of small film-shaped switches that respond to pressure arranged in a matrix on the effective surface of the switch, and inputs the input position information indicating which switch is designated by the operator to the arithmetic processing unit 6. Output to.

The interface 7 is RS232C, RS
It has a communication interface such as 422, RS485, Ethernet, GP-IB, parallel I / O, etc., and executes data transmission / reception with the external device 2.

The control memory 8 stores user screen data created by the user, an operation program for performing a desired display operation, and the like.

The arithmetic processing unit 6 receives an operation request from the external device 2 or a request from the operator via the touch switch 5 and refers to the data stored in the control memory 8 to execute the arithmetic processing corresponding to the request. Depending on the execution result, it issues a command to the graphic control unit 9 to control the display of the display unit 3, or issues a command to the external device 2 via the interface 7.

The graphic control section 9 executes display control on the display section 3 in accordance with an operation command from the arithmetic processing section 6.

That is, in the apparatus of the embodiment shown in FIG. 1, basic display control is managed by the arithmetic processing unit 6, and data input from the external device 2, operation of the touch switch 5 and arithmetic processing of the arithmetic processing unit 6 are performed. When the contents and timing of the screen change are given by the result, the arithmetic processing unit 6 reads the stored screen display data from the control memory 8 and displays the display data to be displayed by the cooperation operation with the graphic control unit 9. Is created and stored in the display memory 4 including the first to third planes. The first of the stored data of the first to third planes
The data stored in the plane is read by the graphic control unit 9, and the read data is supplied to the display unit 3 to display the display data on the display unit 3.

When changing the display, the arithmetic processing unit 6
As shown in the flowchart of FIG. 2, when the display change belonging to category A is performed, the generated display data is
All are similarly stored in the third plane (step 100
~ 130), the generated display data is similarly stored in the first and second planes when the display change belonging to the category B is performed (step 140), and the generated display data is performed when the display change belonging to the category C is performed. Is stored only in the first plane (step 15).
0).

Next, the erase operation of the changed portion will be described.

(1) Erase operation of display portion belonging to category A When such an erase operation is instructed, the arithmetic processing unit 6 refers to the corresponding area of the control memory 8 or the like to determine the coordinate area where the erase operation is required. After confirming, the memory contents of all the planes of the display memory 4, that is, the first to third planes are erased in cooperation with the graphic control unit 9. By this processing, the corresponding area of the display unit 3 is erased.

(2) Erase operation of display change portion belonging to category B (step 170) When such an erase operation is instructed, the arithmetic processing section 6 refers to the corresponding area of the control memory 8 to perform the erase operation. After confirming the required coordinate area, the memory content of the coordinate area of the third plane of the display memory 4 is copied to the same area of the first plane in cooperation with the graphic control unit 9.

That is, since the display contents of the category A (the state before displaying the display data of the category B) are stored in the third plane, the memory contents of the corresponding coordinate area of the third plane are stored in the first plane. By copying to the same area, the display portion of category B is erased in the corresponding area and the display data of category A is restored.

(3) Erase operation of display change portion belonging to category C (step 180) When such an erase operation is instructed, the arithmetic processing section 6 refers to the corresponding area of the control memory 8 to perform the erase operation. After confirming the required coordinate area, the memory content of the coordinate area of the second plane of the display memory 4 is copied to the same area of the first plane in cooperation with the graphic control unit 9.

That is, since the display contents of the category A or the display contents of the categories A and B (when the display changing process belonging to the category B is being performed) are stored in the second plane, the second plane is stored. By copying the memory content of the corresponding coordinate area to the same area of the first plane, the display portion of category C is erased in the corresponding area and the display content of category A or the composite display content of categories A and B is restored.

Next, a specific operation in the case of displaying the sub screen on the base screen and then deleting the sub screen will be described with reference to FIG.

FIG. 3 is an operation management screen of the unmanned carrier truck in the factory, FIG. 3 (a) shows an example of a base screen showing the operation route of the unmanned carrier truck, and FIG. 3 (b) is a carrier truck. 3C is an example of a sub-screen showing that the figure of the carriage is overwritten on the base screen showing the travel route, and FIG. 3D is a constant figure of FIG. 3C. It is a display after the passage of time (the carriage is moving).

Here, FIG. 3 (c) to FIG. 3 (d)
In order to change the display to, the carrier vehicle displayed in FIG. 3 (c) is erased, the operation route hidden under the carrier vehicle is restored, and the position in FIG. 3 (d) is further restored. You must display the carrier truck in. In addition, FIG.
In (d), the broken line on the rectangle around the carrier indicates the figure size and is not actually displayed.

The display change control is performed as follows.

First, in order to perform the display of FIG. 3C, the arithmetic processing unit 6 displays the data relating to the display screen stored in the control memory 8 so as to display the base screen of FIG. The display dot data corresponding to this display screen is created by reading and linking operation with the graphic control unit 9. Since the created display dot data is the base screen, it is stored in the first to third planes of the display memory 4. Next, the arithmetic processing unit 6 generates the sub-screen data of FIG. 3B in the same manner as described above, and then stores the sub-screen data in the required coordinate areas of the first and second planes of the display memory 4. Of course, the storage coordinates of the first plane and the storage coordinates of the second plane are the same. In this way, the screen of FIG. 3 (c) in which the carrier truck is overwritten at a predetermined position on the operation route is displayed.

In order to change such a display to the display of FIG. 3D, if the command for erasing the carrier of FIG. 3C is input, the arithmetic processing unit 6 and the graphic control unit 9 are connected. The stored data corresponding to the coordinate area K of the carrier is read out from the stored contents of the third plane of the display memory 4 by the linking operation and transferred to the same coordinate area of the first plane to be stored therein. As a result, the carrier truck is erased from the display screen of the display unit 3, and
An image of only the operation route as shown in (a) is displayed.
Then, after that, if a command to display the transport vehicle at the position shown in FIG. 3 (d) is input, the arithmetic processing unit 6 reads the data relating to the transport vehicle from the control memory 8 as described above, Display dot data displayed at the position shown in FIG. 3C is created, and this is displayed in the display memory 4
Are stored in the first and second planes. As a result, on the display screen of the display unit 3, as shown in FIG. 3D, the carrier truck is displayed at the required position on the operation route.

If the above-mentioned erasing and displaying operations are continuously and promptly executed, it is possible to display the carrier truck as if it were a moving picture. As described above, according to this embodiment, since it is not necessary to redraw the entire display when changing the display, it is possible to minimize the flicker of the display and perform a series of display changing operations at high speed. be able to. Next, the operation in the case where the sub screen is displayed on the base screen, and the sub sub screen is displayed on the display screen and then a part of the sub sub screen is deleted will be described with reference to a specific example of FIG.

The screen shown in FIG. 4 is an example of a numerical table display of the production situation at the production site in the factory. (A) shows the base screen, and (b) has colored the inside in red (hatching is used instead. (C) shows a sub-screen used as a background for improving the visibility of a rectangular shape, (c) shows a sub-screen of a bar graph, and (d) shows a composite display state of these base screen, sub-screen and sub-sub-screen. (E) shows the display state of the figure of (c) after a certain period of time (a part of the bar graph is shortened), and (f) shows a display on the base screen without displaying the sub-screen. Shows an example of displaying.

First, in order to perform the display of FIG. 4D, the arithmetic processing unit 6 displays the data relating to the display screen stored in the control memory 8 so as to display the base screen of FIG. 4A. The display dot data corresponding to this display screen is created by reading and linking operation with the graphic control unit 9. Since the created display dot data is the base screen, it is stored in the first to third planes of the display memory 4. Next, the arithmetic processing unit 6 generates the sub-screen data shown in FIG. 4B in the same manner as described above, and then stores the sub-screen data in the required coordinate areas of the first and second planes of the display memory 4. Further, the arithmetic processing unit 6 is similar to the above-described one, and is shown in FIG.
After the sub-subscreen data of (c) is generated, it is stored in the required coordinate area of the first plane of the display memory 4. In this way, as shown in FIG. 4D, the bar graph with the background highlighted in red is overlaid on the base screen for displaying the number table. In the case of FIG. 4D, the sub-screen data is made to enter the background portion other than the bar graph in the display area P of the bar graph. Whether or not this processing is performed can be selected.

Next, in order to display the display shown in FIG. 4 (d) as a short bar graph as shown in FIG. 4 (e), the display area of the shortened portion J is shown in FIG. 4 (b). )
It may be replaced with the sub-screen data of.

Therefore, when a command for changing the display of the bar graph is input, the arithmetic processing unit 6 cooperates with the graphic control unit 9 to shorten a part of the bar graph, so that the coordinates must be restored. The sub-screen data of the area J is read from the same area of the second plane of the display memory 4 and transferred and stored in the same coordinate area of the first plane. That is, since the image composed of the base screen and the sub screen before the sub sub screen is displayed is stored in the second plane, the stored data in the area of the second plane is stored in the first plane. By transferring and storing the same in the same area, the display can be changed as shown in FIG.

At this time, in this embodiment, since it is not necessary to redraw the base screen and the sub screen as the base,
High-speed processing is possible, and display flicker can be minimized.

Next, as shown in FIG. 4 (f), when the sub screen (category C) is displayed directly on the base screen (category A) without displaying the sub screen (category B), the base screen is displayed. The screen is stored in all the planes of the display memory 4, that is, the first to third planes. The sub-sub screen is stored only in the first plane of the display memory 4.
Therefore, in this case, when shortening the bar graph, the base screen data corresponding to the coordinate area to be erased is read from the same area of the second plane of the display memory 4 and is read in the same coordinate area of the first plane, as described above. It may be transferred to and stored in.

In the embodiments of FIGS. 3 and 4, the base screen, the sub-screen, and the sub-subscreen are merely examples, and the present invention may be applied to other arbitrary screens. good. For example, as an example of the sub screen, a digital meter, a line graph, a pie graph, a character string display, a chart graph, etc. can be considered.

In the above embodiment, when the data of the second or third plane is transferred and stored in the first plane during the erasing process, the data of the second or third plane is overwritten on the first plane. However, in addition, the above processing is realized by performing a logical operation such as an OR operation, an XOR operation, an AND operation, and a bit inversion operation between the already stored data of the first plane and the data of the second or third plane. It is also possible to do so.

Further, although the present invention is applied to the intelligent type operation panel in the above-mentioned embodiments, the present invention is applied to other equipment having a display for displaying various status displays and screens for signal input. You may make it apply.

[0055]

As described above, according to the present invention,
When changing or erasing the display contents, these operations can be performed by transferring data between a plurality of display planes of the display memory, so that the above processing can be performed at high speed and efficiently. . Also, at the time of the above transfer, only some areas that need to be changed are transferred.
Flicker on the display can be minimized, and the display quality can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing the operation of an embodiment of the present invention.

FIG. 2 is a flowchart showing the configuration of the embodiment of the present invention.

FIG. 3 is a diagram showing a specific example of screen change according to the present invention.

FIG. 4 is a diagram showing another specific example of screen change according to the present invention.

[Explanation of symbols]

 1 ... Intelligent type graphic operation panel 2 ... External device 3 ... Display unit 4 ... Display memory 5 ... Touch switch 6 ... Arithmetic processing unit 7 ... Interface 8 ... Control memory 9 ... Graphic control unit

Claims (2)

[Claims] 1. An image display control device for displaying a sub screen on a base screen displayed on a display device in an overlapping manner, the display data being displayed on the display device having a capacity capable of storing one screen. Is output to the display unit for display, and a second memory plane having a capacity capable of storing one screen of display data to be displayed on the display unit.
A display memory including a memory plane, and when a display related to the base screen is performed, display data for the base screen is stored in the first and second memory planes and a display related to the sub-screen is performed. In this case, display control means for storing the display data for the sub-screen in the first memory plane, and when the sub-screen is erased after the sub-screen is displayed on the base screen, an erase area of the sub-screen is displayed. An image display control, comprising: erase control means for performing the erase processing by transferring and storing the corresponding stored data of the second memory plane to a storage area corresponding to the display area of the first memory plane. apparatus. 2. A display including a base screen, a sub screen superimposed and displayed on the base screen, and a sub sub screen superimposed and displayed on the base screen or the sub screen is displayed on the display unit. In the image display control device described above, a first memory plane having a capacity capable of storing one screen of display data to be displayed on the display, and outputting the stored data to the display for display, and the display. Second, which has a capacity capable of storing one screen of display data to be displayed on
And a display memory including three memory planes including a third memory plane, and display data for the base screen is stored in the first, second and third memory planes when a display regarding the base screen is performed. When the display related to the sub screen is performed, the display data for the sub screen is stored in the first and second memory planes, and when the display related to the sub sub screen is performed, the display data of the sub sub screen is displayed. Display control means for storing in the first memory plane; and when the sub screen is erased after the sub screen is displayed on the base screen, the stored data of the third plane corresponding to the erase area of the sub screen is stored. First erasing control means for performing the erasing operation by transferring and storing in a storage area corresponding to the display area of the first memory plane, and on the base screen When the sub-sub-screen is displayed on the sub-screen after the sub-screen is displayed and then the sub-sub-screen is erased next, the stored data of the second plane corresponding to the erase area of the sub-sub-screen is stored in the second sub-screen. An image display control device comprising: second erasing control means for performing the erasing process by transferring and storing the data in a storage area corresponding to the erasing area of one plane.