JPH0334014A - Management reference method for screen format data - Google Patents

Abstract

PURPOSE:To shorten the display time and to attain the effective use of a semiconductor memory by transcribing and holding a part of the screen format data stored in a 2nd data memory into the idle area of a 1st data memory. CONSTITUTION:A 1st data memory (semiconductor memory) includes 6 areas 1 - 6 as shown in a figure (a), and the 2nd data memory (disk) includes the areas 7 as shown in a figure (b) respectively. The screen format data stored in the 2nd data memory is bisected into the disk variable data DV and the disk fixed data DF. Then it is automatically decided according to the size of an unused area of the 1st data memory whether the data DV is used as the data MV of the 1st data memory or not. Then the data DV is held in the 1st data memory as long as this memory has a room. Thus, the display time is shortened and the availability of the memory is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a screen format data management reference method in which screen format data stored in two memories in units of screens is displayed with reference to a management table. In particular, when one memory is a semiconductor memory and the other memory is a disk, for example, and screen format data stored in the other memory is to be displayed, the data transferred to one memory should be used. This document relates to a method for managing and referencing screen format data.

(Prior art) A conventional screen format data management reference method divides screen format data into screen units and stores them fixedly in a first data memory (semiconductor memory) and a second data memory (for example, a disk). However, when displaying the request screen by referring to the management table set in the semiconductor memory, if the screen format data of the request screen is to be stored on disk, it is transferred to the area secured in the semiconductor memory. Then, the transferred data is used as display data, and after displaying, the secured area is released.

(Problem to be Solved by the Invention) However, in the conventional screen format data management reference method described above, the screen format data is fixedly stored and held in the semiconductor memory and the disk, respectively. There is a problem in that the disk must be accessed each time the screen is displayed, and it takes a long time to display the screen.

As is well known, semiconductor memory is used for various purposes as the main memory of a CPU (central processing unit), and there is often a surplus of semiconductor memory at the operational stage.

The present invention has been made by focusing on such characteristics of the semiconductor memory which is the first data memory, and its purpose is to store the screen format on the disk which is the second data memory in the spare area of the semiconductor memory. An object of the present invention is to provide a method for managing and referencing screen format data that can shorten display time and effectively utilize semiconductor memory by transcribing and retaining part of the data.

(Means for Solving the Problems) In order to achieve the above object, the screen format data management and reference method of the present invention has the following configuration.

That is, in the screen format data management reference method of the present invention, screen format data is divided into screen units, stored in a first data memory and a second data memory each comprising a different storage medium, and set in the first data memory. When displaying the request screen by referring to the management table that is provided, if the screen format data of the request screen is to be stored in the second data memory, it is transferred to the area secured in the first data memory. , in a screen format data management and reference method in which the transcribed data is used as display data; the transcribed data after displaying the screen format data stored in the second data memory may remain in the first data memory as it is; Separately provide data with a certain possibility (second variable data) and data with no possibility, and register this in the management table;
When the transcription data is second variable data, the registered contents of the management table are changed from the second variable data to the first variable data to indicate that the transcription data is data to be stored in the first data memory (first variable data). 1 Change to variable data;
When the unused area generated in the first data memory is equal to or greater than a predetermined threshold, the secured area is continued to be reserved, and the registered changes are maintained as is, and when the unused area is equal to or less than the predetermined threshold, the secured area is released. At the same time, cancel the above registration changes and return to the original registration contents:
It is characterized by this.

(Operation) Next, the operation of the screen format data management reference method of the present invention configured as described above will be explained.

In the present invention, the screen format data stored in the second data memory is divided into two types according to their characteristics, etc., and this fact is registered in the management table, and the screen format data related to display is stored in the second data memory. If the data is variable, the registered contents of the management table are changed, and if the unused area in the first data memory is equal to or greater than the threshold, the second data memory is changed.
The variable data is treated as data in the first data memory (first variable data).

As a result, when the data to be displayed is related to the second data memory and is present in the first data memory, it is possible to display the screen format data at a faster speed than when reading the screen format data from the second data memory. Display time can be shortened. Moreover, in the first data memory,
The generated unused area can be effectively used as an area for screen format data, and memory usage efficiency can be improved.

(Example) Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows the configuration of a semiconductor memory as a first data memory (FIG. 1(a)) and the configuration of a disk as a second data memory (FIG. 1(a)) for implementing a screen format data management reference method according to an embodiment of the present invention. Figure 1 (b)) is shown.

The semiconductor memory is provided with six areas, as shown in FIG. 1(a). Area 1 stores the unused area size. The unused area is generated during the operation stage, and its search is executed by O8 (operating system), and the results are stored in area 1. Area 2 stores the upper and lower thresholds for the unused area size, respectively. A variable flag is set in area 3. This variable flag turns ON when the unused area size exceeds the upper limit of the threshold, and turns OFF when the unused area size falls below the lower limit of the threshold. A management table is set in area 4. As shown in the example, this management table includes a "Screen Number" column, a "Memory/Disk" column indicating whether screen format data, which is display data corresponding to the screen number, exists in semiconductor memory or disk, and "address"
A column is provided.

Here, in the "Memory/Address" column, rMFJ means so-called memory fixed data that is fixedly stored and held in a semiconductor memory, and this is stored in area 5.

In addition, rMVJ means so-called memory variable data (first variable data) that remains in the semiconductor memory under certain conditions even after display, among the screen format data stored on the disk, and this is stored in area 6. Stored.

rDFJ means so-called disk-fixed data that no longer exists in the semiconductor memory after display, among the screen format data stored on the disk.

Finally, rDVJ means so-called disk variable data (second variable data) that can be the memory variable data among the screen format data stored on the disk.
, DF and DV are stored in area 7 of the disk.

Note that area 6 is also used as a temporary storage area when displaying DF or DV.

Next, the operation of the method of the present invention will be explained with reference to FIGS. 2 and 3.

First, display control is performed as follows. In FIG. 2, when there is a request to display a screen, the management table set in area 4 is referred to and it is determined whether the screen format data for the display request screen exists in the semiconductor memory (
Step 21>, this is if the notation in the "Memory/Disk" column is MP or MV, or DF or DV.
If the result of the determination is affirmative (YES), the process proceeds to step 23, and if the result is negative (NO), the process proceeds to step 23 via step 22.

In step 22, since the corresponding format data does not exist in the semiconductor memory, a temporary storage area (that is, area 6) is first secured in the semiconductor memory, and then the corresponding screen format data (either DF or DV) on the disk is saved. Load into area 6. Furthermore, if the "memory/disk" column of the management table is DV, it is changed to MV.

In step 23, the corresponding screen format data is read from area 5 or area 6 and a predetermined screen display is performed.

Next, in step 24, it is determined whether the screen format data used for display is MV.

If the judgment result is affirmative (YES), the process proceeds to step 26, and if the judgment result is negative (no), the process proceeds to step 25.

In step 25, it is determined whether the screen format data used for display is MP (memory fixed data) or DF (disk fixed data). In other words, when it is MF, judge.

The result is affirmative (YES) and this program ends.

If it is DF, the determination result is negative (NO) and the program is terminated after the secured area is released (step 28).

In step 26, it is determined whether the variable flag is ON. This variable flag is operated as described below,
It is determined whether or not the change operation performed in step 22 is valid, that is, whether or not the disk variable data DV transferred to the semiconductor memory is retained in the semiconductor memory as it is. Therefore, if the variable flag is ON, the determination result is affirmative (YES) and the program ends. The change operation has become valid. As a result, screen format data is read directly from the semiconductor memory in subsequent display, and display can be performed at a faster speed than when reading from a disk. On the other hand, if the variable flag is OFF, the judgment result in step 26 is negative (No), so the change made in step 22 is canceled and the MV is changed to DV in step 27).
, the secured area is released (step 28), and the program is terminated.

Then, the variable data is held on the disk as a disk variable data DV, or the variable data is stored as a memory variable data MV.
The third step is to determine the holding position of whether to hold it in the semiconductor memory as
The zero program executed as shown in the figure is executed at regular intervals (for example, every minute).

In the first step 31, it is determined whether the size of the unused area, which is the content of area 1, exceeds the upper limit threshold set in area 2. If the result of the determination is affirmative (YES), the process proceeds to step 32. and turn on the variable flag,
If it is already ON, it continues and this program ends. On the other hand, if the diagnosis result is negative (NO), the process proceeds to step 33, where it is determined whether the size of the unused area is below the lower threshold value.The judgment result is negative (NO).
If so, end this program without operating the variable flag 8. If the judgment result is affirmative (YES), in step 34, turn off the variable flag that was ON until the previous time.
Set it to FF and proceed to step 35.

In step 35, all or part of the area reserved in the semiconductor memory for memory variable data MV (that is, area 6) is released until the unused area exceeds the upper limit threshold, and the memory related to the release is Change variable data MV to disk variable data DV. This is based on the purpose of using an unused area of the semiconductor memory for screen format data while avoiding conflict with other processing by the CPU.

In step 36, if the execution result of step 35 is negative (No), which is a determination as to whether the unused area exceeds the upper limit threshold value, the program is terminated. Also, if the judgment result is affirmative (YES), the variable flag is set to O.
At step 37), the program ends.

(Effects of the Invention) As explained above, according to the screen format data management reference method of the present invention, the screen format data stored in the second data memory is divided into second variable data and non-variable data. and automatically determines whether or not to treat the second variable data as the first variable data in the first data memory, depending on the size of the unused area of the first data memory. as long as 1st
Since it is held in the data memory, when the display target is the first variable data, it can be displayed at a faster speed than reading from the second data memory as in the past, and the display time can be shortened. .

Further, in the first data memory, the generated unused area can be effectively used as an area for screen format data, which has the effect of improving memory usage efficiency.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a semiconductor memory (FIG. 1(a)) that is a first data memory that implements a screen format data management reference method according to an embodiment of the present invention, and a configuration diagram of a disk that is a second data memory. (FIG. 1(b)), FIG. 2 is a flowchart of display control, and FIG. 3 is a flowchart of holding position determination. l: Size storage area of unused area, 2
...Threshold storage area, 3..Variable flag storage area, 4..Management table storage area, 5..Memory fixed data MF storage area, 6.・・・・・・Area for temporary storage of disk fixed data DF, storage of memory variable data MV,
7... Storage area for disk data (DF, DV).

Claims (1)

[Claims] When screen format data is divided into screens and stored in a first data memory and a second data memory each consisting of a different storage medium, and a requested screen is displayed by referring to a management table set in the first data memory. When the screen format data of the requested screen is to be stored in the second data memory, the screen format is such that it is transcribed to an area secured in the first data memory and the transcribed data is used as display data. In the data management reference method; the screen format data stored in the second data memory is divided into data (second variable data) in which the transcribed data after display may remain in the first data memory as is and that possibility. and register the fact in the management table; when the transcription data is second variable data, the transcription data is data stored in the first data memory (first variable data). In order to show that the registered contents of the management table are changed from the second variable data to the first variable data; when the unused area generated in the first data memory is equal to or larger than a predetermined threshold, the secured area is secured. The screen format is characterized in that: the content of the change in the registration is maintained as it is, and when the value is below a predetermined threshold, the secured area is released, and the change in the registration is canceled and the content is returned to the original registration content; How to manage and reference data.