JPS62186377A - Picture display system - Google Patents

Abstract

PURPOSE:To relieve the load by storing a data identifying a picture image or a picture displayed in the preceding time or N-time preceding into a memory device and displaying the picture before an optional number of times stored in advance in response to the picture display request thereby decreasing the number of times of operations of the user of a man-machine device. CONSTITUTION:In receiving a picture display request from an input section 3, a CPU 1 executes a picture display pre-processing program 5. In the picture display pre-processing program 5, a picture image or a data identifying the picture displayed at the preceding time or before N-time stored in a storage area 6 as necessary is utilized and the picture to be displayed is decided and a picture display program 7 is started. An object picture is displayed on a picture display device 2 by the picture display program 7. Thus, the trouble of the operation in the input section 3 for the picture display is reduced in comparison with a conventional picture display. Thus, in the case of alternate display of several specific screens, the operation for the picture display is facilitated and the load of the user of the man-machine device is relieved.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for displaying various screens on a display device,
The present invention relates to a screen display method for redisplaying a screen that was displayed last time or up to N times in response to a screen display request from an input unit of a man-machine device.

[Technical Background of the Invention] A man-machine device in a computer-based supervisory control system has a screen display device typified by a CRT, and many display more than 100 types of screens. As the number of display screens increases, each screen is required to be displayed, so it is necessary to provide a dedicated switch for each screen as the input section of the man-machine device, or to operate a combination of a limited number of switches, coordinate input devices, etc. A method was used to display the screen.

In this case, the method of providing a dedicated switch would result in a large number of switches and there is a risk of erroneous operation by the user. Therefore, a dedicated switch should be provided only for a specific screen, and most other screens should be used with other switches or coordinate input devices, etc. A method of displaying by combining operations was used.

In supervisory control systems, it is often the case that specific data is compared and examined by repeatedly displaying any number of screens alternately depending on the status of the supervisory control target. The number of screens to which dedicated switches are assigned is limited, and therefore the number of operations required to display the screen increases in many cases, which increases the burden on the user of the man-machine device.

[Object of the Invention] In view of the above-mentioned problems, the present invention regenerates the screen that was displayed last time or N times ago by a combination operation or a single operation that is simpler than the combination operation for normal screen display. An object of the present invention is to provide a screen display method that reduces the number of operations and the burden on a user of a man-machine device.

[Summary of the Invention] In order to achieve the above object, the present invention stores in a storage device data identifying screen images or screens displayed last time or up to N times on a screen display device such as a CRT. , the previous display screen or the screen displayed up to N times ago is displayed using the screen image or screen identification data stored in advance in the storage device in response to a screen display request from the input unit of the man-machine device. It is characterized by displaying any screen of your choice. Here, the screen image refers to the data and display device displayed on the screen, and the data for identifying a screen refers to data for identifying a specific screen from among a large number of screens.

[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of the main part of the man-machine system according to the embodiment of the present invention, and FIG. 2 is a diagram of the screen image before display of the embodiment of the present invention when storing screen images of both sides of the previous display or data identifying the screen. Processing Flowchart FIG. 3 is a flowchart of screen display preprocessing according to an embodiment of the present invention in the case of storing screen images of screens displayed up to N times before or data for identifying screens.

In Figure 1, 1 is a processor (hereinafter referred to as CPU)
, 2 is a screen display device, 3 is an input unit, 4 is a memory, 5 is a screen display preprocessing program area, 6 is a storage area for storing screen images and data for identifying the screen, and 7 is a conventional screen display program area. shows.

When the CPU 1 receives a screen display request from the input unit 3, it skips execution of the screen display preprocessing program 5.

In the screen display preprocessing program 5, after determining the screen to be displayed using the screen image of the screen displayed last time or N times ago or the data identifying the screen stored in the storage area 6 as necessary, Start the screen display program 7. A target screen is displayed on the screen display device 2 by the screen display program 7.

Next, the processing procedure in the screen display preprocessing program 5 when storing the screen image of the previous display screen or data identifying the screen will be explained with reference to FIG. Step 21
In step 22, the user inputs the operating procedure through the input unit 3, and in step 22, it is determined whether the operating procedure is the display operating procedure for the previous display screen.

If it is determined in step 22 that the display operation procedure is for the previously displayed double-sided display, step 23 is executed. In this step 23, the screen image of the previous display screen or data identifying the screen is retrieved from the storage area 6, and based on this retrieved data, which screen is to be displayed is determined.

On the other hand, if it is determined in step 22 that the display operation procedure is not for the previous display screen but for another screen, the screen determined according to the procedure becomes the newly displayed screen (step 24) . In step 25, the screen image of the currently displayed screen or data identifying the screen is stored in the storage area [6. Step 23 or Step 2
The display screen determined in step 4 is notified to the screen display program 7 in step 26, and is displayed on the screen display device 2.

Next, the processing procedure in the screen display preprocessing program 5 when storing the screen image of the screen displayed N times before or the data identifying the screen will be described with reference to FIG. Steps 21.22.24.25 and 26 are the same as the corresponding steps 21.22.24 and 26 in FIG. 2, respectively. In step 31, i (1≦i≦
N) Data identifying the previous screen image or screen is retrieved from the storage area 6, and the display screen is determined based on this retrieved data. In step 31, the data identifying the double-sided images or screens of the display screens from 1 to N-1 times before become the screen images or data identifying the screens of the display screens from 2 times before to N times ago, respectively. The contents of the storage area 6 are updated. In step 25, the screen image of the currently displayed screen or data identifying the screen is stored in the storage area 6 as the previously displayed screen.

According to this method, the complexity of operations on the input unit 3 for screen display is reduced compared to normal screen display.

Therefore, when displaying a specific number of screens alternately,
The operation for screen display becomes easier and the burden on the user of the man-machine device is reduced.

[Effects of the Invention] As described in detail above, according to the present invention, when displaying a specific number of screens alternately, the operation for displaying the screens does not become complicated, and as a result, it is easier for the user of the man-machine device. This reduces the burden and allows operations to be performed more quickly.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the main parts of the man-machine system according to the embodiment of the present invention, and Fig. 2 is a screen display of the embodiment of the present invention when storing a screen image of the previous display screen or data identifying the screen. Screen Processing Flowchart FIG. 3 is a screen display preprocessing flowchart according to an embodiment of the present invention in the case of storing screen images of screens displayed up to N times before or data for identifying screens. 1... Processor (CRT) 2... Screen display device 3... Input unit 4... Memory 5... Screen display pre-processing program area 6... Storage of screen image and data identifying the screen region

Claims (1)

[Claims] In a screen display method that displays various screens on a display device in response to a screen display request from an input section of a man-machine device, a storage device stores the screen image or data identifying the screen displayed the last time or N times before. A screen display method characterized in that the screen is displayed an arbitrary number of times previously stored in advance in response to a screen display request.