JP3204502B2 - CRT display screen switching method, display screen switching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method and an apparatus for switching a CRT display screen, and in particular, to a CRT display screen which is suitable for a system in which the display screens are arranged in multiple layers. The present invention relates to a switching method and a switching device.

[Prior art] CRT operation is common for plant operation monitoring and operation, and keyboards and light pens are used as operator console operating devices, and recently there are many mice and touch panels. Has been adopted. As described in Japanese Patent Application Laid-Open No. 60-227294, a two-stage display of an overview screen and a detail screen as a menu screen is mainly used for display operations of an operator console for performing CRT operations. It is systematized by structure. Screen switching is performed by selecting a detailed screen from the menu screen to display a detailed screen, displaying the menu screen on the same screen as a reduced list screen, and selecting a desired display screen from the list screen. I was

In recent years, workstations have been introduced, which have a multi-window function, so that multiple screens can be displayed simultaneously. By using this function, screen display switching using a multi-stage tree structure with two or more stages is performed, but in this case the CRT operation becomes complicated, and it is necessary to provide the operator's operation guidance information. I have. As a conventional example for this purpose, as described in JP-A-64-88607, an overview before expansion is displayed on a part of a screen on which detailed data is displayed, thereby confirming the detailed data and verifying the plant. The entire operation status can be monitored on the same screen.

[Problems to be Solved by the Invention] Fig. 6 shows an example of a screen configuration of a multi-tiered tree structure, in which (flat) circles each indicate a display screen. When each screen is connected by a line (a side of a tree structure),
The transition can be made with a single operation command. Here, for example, the screen 600 is a menu screen serving as a starting point for the entire screen,
606 is a plant process monitoring screen, screens 620 to 627 are screens for data editing, drawing, program creation / change, simulation, etc., connected by a straight line and can be moved by one operation Screens are related to each other in their display purpose. Normally, the switching operation is easy because there are many transitions to such related screens.However, for example, if a plant abnormality occurs during simulation or program change using the CRT display device of the plant monitoring system, It is necessary to quickly switch from the screen 627 to the screen 604 in FIG. 6 and return to the screen 627 again after the abnormality countermeasure processing under the screen 604 is displayed (arrow). In such a case, returning from the screen 604 to the screen 627 along the route with the solid arrow requires the number of operations equal to the number of the solid arrows, which is extremely inefficient.
Further, the processing data input under the display of the screen 627 before the occurrence of the plant abnormality is also lost, and it is necessary to return to the screen 627 and input again after the abnormality processing. These problems are the same even when a command for returning from an arbitrary screen to the top screen 600 by one operation is provided, for example.

An object of the present invention is to provide a method in which a display is switched to an arbitrary screen which cannot be shifted by one normal command operation.
An object of the present invention is to provide a method and a device for switching a CRT display screen which can return to the original display screen by a simple operation.

Means for Solving the Problems In order to achieve the above object, in the present invention, a sequence of switching commands necessary from the top screen of the tree structure to the screen currently being displayed and the current display screen First storage means for storing history information consisting of corresponding input data by always taking in an input command and input data, and second storage means for registering history information stored in the storage means; A registration command and a re-display command are provided, and when the display is switched from the current display screen to another screen having less relation to the contents of the screen, the display time is stored in the first storage means by the registration command prior to the switching. When the history information is stored in the second storage means and the process on the screen displayed by the switching is completed and the screen returns to the screen display before the switching. The display switching from the history information stored in the second storage means to the screen before the switching and the recovery of the input data are performed by the redisplay command.

[Operation] Since the first storage means stores history information necessary for redisplaying the screen being displayed at that time, a screen requiring many other operations from a screen requiring redisplay is displayed. If the history information is registered in the second storage means at the time of moving to step 2, redisplay and recovery of input data up to that time can be easily performed by issuing a redisplay command once using this information. Redisplay of this screen and recovery of input data can be performed between any screens. Further, if history information of a plurality of screens is registered in the second storage means, the redisplay of the plurality of screens can be easily performed.

EXAMPLES Hereinafter, the present invention will be described in detail with reference to Examples. FIG. 2 is a block diagram showing the configuration of a system for realizing the method of the present invention. The CPU 201, main memory 202, file device 203, input / output device 204, CRT control device 205, CRT display device 101, keyboard 206, It consists of mouse 102 and the like. The main memory 202 is provided with a command history stack 105 and a registration screen management table 107 which are features of the present invention.

FIG. 3 shows an example of a display screen of the CRT display device 101. The screen configuration is divided into a CRT operation column 301 and various graphic / graph display screens 302. When a command in the CRT operation column 301 is selected by a function key on the mouse 102 or the keyboard 206, the various graphic / graph display screens 302 are switched correspondingly. Among these commands, a screen registration command and a redisplay command, which are features of the present invention, are provided. When the registration command is issued, it is necessary to redisplay the screen displayed at that time as described later. Information is stored in the stack 105 in the main memory 202.
The registration screen is redisplayed.
It is displayed on one of 303 and 304. When information of a plurality of screens is registered, redisplay icons (only two icons are shown in FIG. 3) are displayed by the number of the registered information.

FIG. 1 is a functional block diagram showing an embodiment of a switching method according to the present invention. The processing of each of the processing units 103, 104, 106, 108, and 109 is performed by executing each program by the CPU 201. Data 110, operation column data 111
Are stored in the file device 203. Screen switching operation is C
The command in the display screen of the RT display device 101 is performed by instructing with the mouse 102 or the like.The instructed command is first decoded by the command interpretation unit 103,
It is classified into a general screen switching command (a conventional command for shifting between screens connected by a straight line in FIG. 6), a screen registration command, or a redisplay command. When this is a general screen switching command, the command history registration processing unit 104 registers and deletes the command in the command history stack 105. Here, since a screen system managed by a tree structure having a large number of components as shown in FIG. 6 is used, a transition to a lower layer which is a forward direction (a transition to a lower direction in FIG. 6) is performed. In the history stack 105
When the command is pushed onto the stack 105 (PUSH of the stack), or moved to the upper position, which is the reverse return direction (moved in the upward direction in FIG. 6), the command was loaded on the stack 105 by the previous operation. Remove it from there (stack POP). By the processing in the processing unit 104, the minimum sequence of the switching commands from the top screen of the tree structure (the screen 600 in FIG. 6) to the screen currently being displayed is always stored in the stack 105. When the stack operation is completed, the corresponding screen data is taken out from the screen data file 110 in the screen display data index / editing unit 109, and the CRT control unit 202
It is displayed on the screen of the CRT display 101.

Next, when there is a need to move from the currently displayed screen to an unrelated screen or to return to the previous screen, a screen registration command is first instructed. This is decoded by the command interpretation unit 103, and a screen registration request is issued to the screen registration processing unit 106. The screen registration processing unit 106 secures the screen registration number in the registration screen management table 107 and stores the command history stack 10
The command sequence stored at that time is retrieved from 5 and stored. Here, it is assumed that each command is represented by, for example, a screen signal in the operation column 301 in the screen (the operation column differs for each screen) and the number from the left (or right). Also, since the input data for the screen at this time is in the main memory 202, it is also registered in the bullet 107 as history information. When the storage of the history information is completed, a request for displaying the registration screen redisplay icons 303 and 304 is issued to the screen display data index / editing unit 109, and one of the redisplay icons is displayed. For example, the display screen of FIG.
When this screen is registered at the time of 302, one icon 304 is displayed as shown by the diagonal lines in FIG. 4 to indicate that the screen in FIG. 3 is registered.

It is assumed that after the screen registration as described above, the display screen is switched to a completely unrelated screen. For example, assume that the screen 627 in FIG. 6 is that of FIG. 3 and the screen 604 is that of FIG. When the processing on this screen is completed and a return to the screen 627 is desired, a redisplay command is issued. The command interpreting unit 103 decodes this, and issues a request to redisplay the registration screen to the screen redisplay processing unit 108. As a result, the registered redisplay icon is indicated by blinking or the like, and when one of the icons is designated by a mouse or the like, the screen redisplay processing unit 108 extracts the corresponding history information corresponding to the registered screen from the registered screen management table 107, and The screen display data index / editing unit 109 retrieves the desired screen data by searching the operation column data file 111 and the screen data file 110, edits the screen data, and displays the screen data on the CRT display device 101. Thus, for example, the screen 627 in FIG. 6 is displayed again by a simple operation. In this redisplay, the history information of the screen 604 before redisplay is stored in the stack 105 at the time of the display. The two screens 604 and 627 can be alternately displayed by a simple operation.

[Effects of the Invention] According to the present invention, an arbitrary screen can be registered and redisplayed, so that the currently displayed screen and the accompanying operation can be temporarily displayed and operated without terminating or interrupting the operation. This makes it possible to improve the operability of the operator.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing an embodiment of the switching method of the present invention, FIG. 2 is a hardware configuration diagram of an example of a system for realizing the present invention, and FIGS. FIG. 6 is a diagram showing an example of a screen system managed by a tree structure. 101 …… CRT display device, 102 …… Mouse, 104 ……
Command history registration processing unit, 105 Command history stack, 106 Screen registration processing unit, 107 Screen registration management table, 108 Screen redisplay processing unit, 109 Screen display data index / editing unit, 303 , 304 ... Register icon redisplay icon.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-64-18817 (JP, A) JP-A-2-133868 (JP, A) JP-A-61-11841 (JP, A) “FACOM OS IV SIMP LE / ACS APG Manual, COBO L85 ”, Fujitsu Limited, 1988, p19, p149-p153, p224-p238 (58) Fields investigated (Int. Cl. ⁷ , DB name) G09G 5/00-5 / 42 G06F 3/14-3/153 G06F 15/40

Claims (3)

(57) [Claims] 1. A screen to be displayed on a CRT is systematized by a tree structure, and one display screen is connected to the screen by the side of the tree structure by specifying one of the switching commands specified corresponding to the screen. CRT that switches the display to a different screen
In the display screen switching method, each time the above switching command is specified, the switching command is taken in, so that a sequence of switching commands necessary for displaying the screen currently displayed from the top screen of the tree structure to the currently displayed screen is stored. A first storage unit, a second storage unit for registering a sequence of the switching commands for an arbitrary screen and input data for the screen input during display of the screen, a registration command, a redisplay command, When temporarily switching from the first screen currently being displayed to another second screen and then returning to the display of the first screen again, the registration command is first issued and the first storage means is issued. The sequence of the switching command stored in the first storage unit and the input data for the screen input during the display of the first screen are registered as history information in the second storage unit. The above process is the end switches the display to the second screen, when once again return to the first screen display of,
The redisplay command is issued to retrieve the history information registered in the second storage means, and the first screen and the data input to the screen are redisplayed using the history information. A method for switching a CRT display screen, characterized in that: 2. When the history information is registered in the second storage means, an icon indicating that a screen corresponding to the history information is being registered is provided on a display screen. The method for switching a CRT display screen according to claim 1. 3. A screen to be displayed on a CRT is systematized by a tree structure, and one display screen is connected to the screen by the side of the tree structure by specifying one of the switching commands specified for the screen. CRT display screen switching device that switches the display to a screen that has been displayed. Each time the above switching command is specified, it is necessary to capture the switching command to display the currently displayed screen from the screen at the top of the tree structure. A first storage unit for storing a series of switching commands, and a series of switching commands stored in the first storage unit when registration is designated from the input unit and input during display of the display screen at that time. Second storage means for registering the input data for the screen as history information, and the history information registered in the second storage means when redisplay is designated by the input means. The CRT display screen of the switching device, characterized in that a control means for the redisplay of the data input to the subsequent history information corresponding screen and the screen removed.