JPS5830788A - Setting of scrutch pad display area - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of setting a scratchpad display area for a display.

Some conventional cathode ray tube display devices (hereinafter abbreviated as display devices) of the Rusk scanning method have a main screen display area (MDA) and a screen pad display area (8DA) on the screen of the device, as shown in Figure #I1 (1).
) as shown at the top of the screen J (8D people, MD at the bottom)
Examples are known in which A is displayed fixedly, or JCSD is fixedly displayed at the armpit or at the bottom of the screen as shown in FIG. 1(b), and MDA is fixedly displayed at the top of the screen. Generally, information that spreads two-dimensionally on the MDA, such as a plant configuration diagram.

Graphs, numerical tables, etc. are displayed, and message information such as alarm information 9 time information and key-in information from the keyboard is displayed on the SDA.

FIG. 2 is a block diagram of a conventional display system, in which 12 is a display control device, which includes a device control circuit 13, an MDA! J Fresh Memory 4. Character generator 5.8D person refresh memory 6, character generator 7. It has a built-in video control circuit 18, and also includes a central processing unit 1l (CPU) 1, a display device 19. Consists of 1G keyboard. Processing procedures associated with CPU1,
It goes without saying that a storage device for storing data is required, but it is not shown.

In this configuration, display data signals such as the ePU1, control signals from the keyboard 1°, one numeric character, and nine colors of symbols are sent via the control circuit 13, and the data to be displayed on the MD is stored in the refresh memory 4 in code format. Then, it is converted into dots by the character generator 5, sent to the control circuit 18, and sent to the SD
The data to be displayed on A is stored in the refresh memory 6 in code form, converted into dots by the character generator 7 and sent to the control circuit 18, and displayed on the display device 19 upon receiving a synchronization signal from the circuit 13.

The refresh memory 4 in FIG. 2 has an MD in FIG. 3(a).
A information and the 8DA information shown in FIG. 3(b) are stored in the memory 6, and the position of SDA is adjusted so that the MDλ information and SDA information do not overlap on the screen and the position of SDA is set as shown in FIG.
The composite display result when fixed as shown in b) is M3.
As shown in figure (d), I, J, K.

The MDA area on the screen becomes narrower by the amount that L disappears.

On the other hand, if the MDA information and 81) A information are overlapped on the screen, the MDA area does not become narrower, but as shown in Figure 3 (
1.2, 3.4 and I, J like C1.

There was a drawback that if K and L were 1, it would be difficult to distinguish between regions.

The present invention has been made to eliminate the above-mentioned drawbacks, and M
The entire area of the screen is allocated to DAJ, and a part of the screen is allocated to 8DA, but the position on the screen of SDA (its starting position) can be set from the outside, and the refresh memory 6 is allocated according to the set starting position information. Contents can now be displayed at a predetermined position on the screen. For areas that conflict with the refresh memory 4, the information in the refresh memory 6 is given priority 1, and 8DA information is always displayed somewhere on the screen by simply fixing or periodically updating the position information from the outside. The purpose is to make it possible to view MDA information across the entire screen.

The present invention will be explained in detail below with reference to the drawings.

FIG. 4 shows a block diagram of the configuration of an embodiment of the present invention using a display control device f$2, in which CPU1. keyboard 10
An 8DA first row setting circuit 9 is provided, which can be set from either of the two, and the output of the circuit 9 is guided to the device control circuit 3.

βm of the information given to the control device 2 from the CPUI and the keyboard 10.

Figure 5 (Jil's MDA specified order and information, Figure 5 (bl's 8DA specified order and information are transferred to I [(contact control (b) @ 31
The data is divided and stored in the refresh memory 4.6 and converted into dots by the character generators 5 and 7.

When the setting circuit 9 receives the SDA first row information from the CPUI or the keyboard 10 and sends the value to the circuit 3,
Circuit 3 then receives and holds new first row information. When the desired circuit 3 receives the first row information, it sends a control signal to the video control circuit 8 to display the information in the refresh memory 6 from the first row, and as a result, the position of 8DA on the screen is Move to the specified next line.

Next, regarding the meaning of "previous line", it is not possible to display a character at an arbitrary dot line in the physical display line of the display device 19, even if it is a dot. shall be the minimum unit of

To explain this in more detail, the L character is an R dot in the row direction, as shown in Figure 6 (a).

If the column direction L dot configuration is used, 0 as shown in Figure 6(b).
The character in the row occupies rows 0 to R-1 in the dot row,
The i-th character occupies rows R to 2R-1 in the dot row, and in the same way, the i-th character occupies 1 dot (1-4-1) R-1 row in the dot row, and there are two types of characters. There are differences in line representation.

Therefore, in the configuration example shown in FIG. 4 using the display control device 2, a character line is used as the first line set from the CPUI and the keyboard 10, and the circuit 3 processes the information received from the input wI9 as a character line.

Figure 7 shows the positioning of 8D'A on the screen when the width of 81) A is fixed to α rows in the vertical direction, fixed to 1 column in the horizontal direction same as the size of the screen, and the first row of 8DA is set to r row. It is a schematic diagram, in particular, the total number of lines on the screen is 3×σ
The number of lines in 8DA is σ, and the first line in 8DA is 0. σ,
When specifying 2σ, etc., the respective arrangement situations are as shown in Fig. 8 (a3, (b), (C). As is clear from the figure, in Fig. 8 < 1), (C), 8DA on the screen is The main surface display area excluded is MDA, MDM.
4, and in Figure 8 (b) MDA
It is divided into two reviews: 2 and MDA 3. and the eighth
Even if the DA arrangement is shifted by 1 to 8 as shown in Figures (B) and (C), the SDA information remains displayed somewhere on the screen, while the main screen display area is also MDA 7 MDA 1.
By combining MDA3, MD, and A4, the entire area display of the main 111w information is completed.

8D If you don't move the person, you can get the same effect as the conventional method.
Needless to say, various display modes can be realized by shifting the aDA level intermittently or periodically.

As described above, according to the present invention, when the screen of a display device is divided and displayed into the main screen area and the scratch pad display area, a circuit for setting the first line of the scratch pad display area is provided, and the CPU or the
By supplying the first row information from the keyboard to the first row setting circuit at an appropriate timing, the main surface area can be displayed over the entire screen along with the scratch bat display. If only the first line is provided in addition to the display information, the display control device is responsible for controlling the narrow display on the screen, and the burden on the CPU can be significantly reduced.

[Brief explanation of drawings]

2 Figures 1 (al and b) are diagrams of the main screen display area 5. scratch pad display area on the conventional screen, and Figure 2 is a block diagram of the configuration of a display system using a conventional display control device. Figure 3 (
at * (bl' e (c', (dl is a diagram of the composition of characters in the main screen display area and scratch pad display area on the screen, and FIG. 4 is a diagram of a display system using a display control device according to an embodiment of the present invention. 5(a) and 5(b) are MDA designation and display information diagrams according to the present invention, and 8DA designation and display information diagrams, Figure 6) is a dot configuration diagram of one character, and Figure 6 (bl is A comparison diagram of character lines and dot lines, Figure 7 is a diagram of 81+A positioning on the screen, Figure 8 (a), (bl
. (C) is a mutual relationship arrangement diagram of MDA and 8DA on the screen. 1., CPU, 2.. Display control device according to the present invention, 3.13.. Device control circuit diagram, 4, 6-.. Refresh memory, 5.7.. Character generator, 8.1
8-video control circuit, 9--first row setting circuit, 10...
・Keyboard, 12... Conventional display control device, 19... Display device, MDA-main screen display area, 8DA... Scratch pad Tt
Mouth 2 /θ f'2 Month 7 S Mouth (cL) (b) Year 6 Figure 4 Column 77 Sub-78 Figure

Claims (1)

[Claims] A display control device that divides and displays the screen into a main screen area and a scratch pad display area - A scratch pad display area first line setting circuit is provided, and the first line information is set from the central processing unit or the keyboard in character line units. A method for setting a scratchpad display area, which is characterized by setting it in a circuit.