JPS60198635A - Data input controller for crt display - Google Patents

Abstract

PURPOSE:To simplify an input operation for instructions similar to each other by transferring the contents of a buffer when a recall key is produced from a key input means to a video memory and copying the input data stored in the video memory to the buffer when a key input operation is through. CONSTITUTION:A recall means 9 and an end means 10 are connected to an identification means 7 connected to a key input means 1. The input signal given from the means 1 is identified by the means 7. If said input signal is set with a recall key, a signal is sent to the means 9. Then a cursor is set at a prescribed position, and a character string in a buffer 8 is copied to a video memory 4. When an input end key is pushed by the means 1, a signal identified by the means 7 and sent to the means 10. Then the contents of the memory 4 are copied to the buffer 8. Furthermore, the recall key of the means 1 is pushed to shift the cursor to a desired area. Thus an instruction of a prescribed position can be rewritten.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention provides a method for transferring data manually stored in a video memory to a 'CRT.
This relates to a data manual control device that allows the next command to be input manually with a simple operation when displaying the data on a display.

When displaying data manually entered into video memory on a CRT display, similar operations may be repeated.

For example, if there is a video memory in which data is input from addresses 0 to 100 as shown in Figure 2, then addresses 0 to 20, 3
There is a desire to display data such as addresses 0 to 50 and addresses 70 to 90 on a CRT.

In such a case, enter the command as shown in Figure 3, but
As is clear from FIGS. 3(a) to 3(ri), the expressions are almost the same, and only the address display is different.

(b) Purpose of the Invention This invention provides the following advantages: ``When inputting a similar command as shown in Figure 3, if only the address part in Figure 3 is corrected, the contents of the corrected address will be displayed on the CRT screen. The purpose is to make it easier to operate.

(c) Embodiment of the Invention First, a block diagram of an embodiment of the invention is shown in FIG.

In FIG. 1, 1 is a key manual means, 2 is a character writing means, 3 is a cursor position storage means, 4 is a video memory, 5 is a display control section, 6 is a CRT, 7 is an identification means, 8 is a buffer, and 9 is a Recall means and 10 are termination means.

Next, the operation of FIG. 1 will be explained with reference to the flowcharts of FIG. 4 and subsequent figures.

FIG. 4 is a flowchart of the key human power means 1.

In step 11 of FIG. 4, it is determined whether a key has been pressed.

If a key has been pressed, the process proceeds to step I2, where the code of the pressed key is entered manually.

In step 13, the human power signal of the key human power means 1 is transmitted to the identification means 7.

Next, a flowchart of the identifying means 7 is shown in FIG.

In step 21 of FIG. 5, it is determined whether the recall key has been pressed.

If the recall key is pressed, a signal is sent to the recall means 9 in step 22.

If the recall key has not been pressed, it is determined in step 23 whether the entry key has been pressed.

If the entry key is pressed, a signal is sent to the termination means 10 in step 24.

If the key is not pressed manually, a signal is sent to the character writing means 2 in step 25.

Next, a flowchart of the character writing means 2 is shown in FIG.

In step 31 of FIG. 6, it is determined whether the input signal is a cursor movement key.

If the human input signal is a cursor movement key, the process proceeds to step 32, where the cursor is moved one digit upward, downward, leftward, or rightward depending on the content of the pressed cursor key.

If the input signal is not a cursor movement key, step 3
3, the character code corresponding to the pressed key is written at the cursor position in the video memory 4.

In step 34, the cursor position is set to +1.

Next, a flowchart of the recall means 9 is shown in FIG.

In step 41 of FIG. 7, the cursor is set at the cursor position at the beginning of the record.

In step 42, the character string in buffer 18 is copied to video memory 4 starting from the cursor position.

In step 43, it is determined whether the end of the record is blank,
If the character string is not blank, a blank is written in the character string in step 44.

If the end of the record is blank, step 45 sets the cursor to the cursor position at the beginning of the record.

Next, a flowchart of the termination means 10 is shown in FIG.

In step 51 of FIG. 8, the cursor is set at the cursor position at the beginning of the record.

In step 52, the contents of video memory 4 starting from the cursor position are copied into buffer 18.

In Stella 53, the cursor position at the beginning of the record is set to the beginning of the next line.

In step 54, the cursor is positioned at the beginning of the record.

As is clear from FIGS. 5 and 8, the contents of the video memory 4 are copied to the buffer 8 after the input key is pressed.

That is, input the command as shown in Fig. 3 (a) and display the CRT.
Ei, and when the manual key of the key manual means 1 is pressed, the termination means 10 copies the command shown in FIG. 3(A) to the buffer 8.

In this state, when you press the recall key of the key manual means 1, the command shown in Figure 3 (a) will be displayed on the CRTE 3 first, so move the cursor to the required location and type the command as shown in Figure 3 (b). It can be rewritten as a command.

(d) Effects of the Invention According to this invention, the commands input to the CRT display are stored in the buffer 1, and when the recall key is pressed, the commands stored in the buffer are displayed on the CRT, so that the commands can be input only where necessary. By modifying the command, the next command can be executed, making the operation easier.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment according to the present invention, FIG. 2 is a diagram showing an example of data manually entered into a video memory, FIG. 3 is a diagram showing an example of commands input to a CRT display, and FIG. 4 is a key diagram. The flowchart of the manual means 1, FIG. 5 shows the flowchart of the identification means 7, and FIG. 6 shows the character writing means 2.
7 is a flowchart of the recall means 9, and FIG. 8 is a flowchart of the termination means 10. 1...Key manual means, 2...Character writing means, 3...Cursor position storage means, 4...
...Video memory, 5...Display control section, 6...
...CRT, 7...Identification means, 8...
・/itsufu 1.9...Recall means, 10...
...Termination means. Agent Patent Attorney Kin Tsukasa Komata Figure 1 Figure 2 (A)
) Guri 3Q TO! ;0 (Ts2 Ri // 70 TO110

Claims (1)

[Scope of Claims] 1. A CRT display having a key manual means, a character writing means, a cursor position storage means, a video memory, and a display control section, comprising: an identification means for classifying a recall key signal from the key manual means; , characterized by comprising a recall means for transferring the contents of the buffer to the video memory when the recall key (i) occurs, and a termination means for copying input data in the video memory to the buffer 1 when the key manually ends. CRU
Display data human horn control device.