JPS58117590A - Screen control system - 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 (1) Technical details of the invention The present invention relates to a function key with a protection function for easily erasing a portion of a display or a word processor.

(2) Prior Art and Problems Conventionally, erasing a part of the screen in TisFrei or word processors has been done line by line or character by character using the space key, and in some cases it has been difficult to perform quick operations.

(3) Purpose of the Invention In view of the above-mentioned drawbacks of the conventional art, it is an object of the present invention to provide an efficient screen control method with simple operation.

(4) Structure of the Invention According to the present invention, the invention is composed of a keyboard, a display section, a control section, and a buffer memory, and the buffer memory contains character-to-bottom information corresponding to the character string displayed on the display section. In a display device in which the erasure protection mark is stored, the keyboard sets the start and end points of the erasure protection mark, and pressing the screen erase key clears the area other than the protection mark. , it memorizes the address of the erasure protection mark, fills a space outside the protection mark, and outputs an error message to the display in case of an error such as when the start and end points of the protection mark are not paired. This is achieved by providing a screen control method that allows

(5) Examples of the invention Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a diagram showing the internal configuration of a screen control method according to the present invention.

In the figure, 1 is a keyboard, 2 is a display section, 3 is a control section, and 4 is a buffer memory.

In addition to the normal keys, the keyboard l has an erase protection mark and a screen erase key to set the start and end points of the data or screen that you want to keep.You can set the start and end points of the erase protection mark and press the screen erase key. By pressing down, you can erase all data or screen outside of that range.

The control unit 3 stores the address of the erasure protection mark when data or screen information is stored in the buffer memory,
In the event of an error such as when a space is filled in outside the protection mark and the start and end points of the protection mark are not paired, the control unit outputs an error message to the display unit 2, and the number of characters to be erased is the number of characters to be protected. and PARTI
ALWRITE or ERASE WRI
Determine whether to select TE or not and display it.

FIG. 2 is a 70-chart of the processing functions of the control unit according to the present invention.

5TART: Set the erase protection mark from the keyboard and press the erase key.

■: Memorize the position of the erase protection mark.

■:■ If there is an error such as the erasure protection mark is not set, @, the erasure protection mark is not paired, or the start and end points of the θ1 erasure protection mark are not in the same position, the error message of ■ is output. If not, then the following ■
go to

■: Fill the space outside the protective margin.

■: Calculate the amount of space filled.

Determine whether the amount of space is large.

If there are not many, ■: Output using partial write. If there are many, ■: Output with erase write.

Note that partial write refers to partial transfer (in this case, only the protected portion is transferred) and display, and 1-erase write refers to transfer and display of the entire screen information.

FIG. 3 shows an example of the operation according to the present invention on a display section. 21 is unerased data (screen), 22 is a screen in which the start point 24 (indicated by a black circle) and the end point 25 (indicated by a black triangle) of an erasure protection mark are set for the data or screen 21;
3 indicates a screen in which all parts other than the portion set with the lover protection mark are erased by pressing the screen erase key.

(6) Effects of the Invention As described above in detail, the screen control method of the present invention has great effects in that data or screen changes can be made quickly and efficiently.

[Brief explanation of the drawing]

Figure 1 is a block diagram explaining the internal configuration of the screen control system. Figure 2 is a 70-chart of the processing functions of the control unit.
The figure is a diagram for explaining an example of operation. In the drawings, l is the keyboard, 2 is the display section, 3 is the control section, and 4 is the buffer memo.

Claims (1)

[Claims] In a display device that consists of a keyboard, a display section, a control section, and a buffer memory, the buffer memory stores code information corresponding to the character string displayed on the display section. is set, and by pressing the screen erase key, all other than the protection mark is erased, and when the screen information is stored in the buffer memory, the controller memorizes the address of the erase protection mark, fills a space outside the protection mark, A screen control method characterized by outputting an error message to the display section in the event of an error such as when the start and end points of a protection mark are not paired.