JPS6223329B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to a cursor display control device for a personal computer having a semi-graphic display function.

<Prior art> In general, in a personal computer with a semi-graphic display function, alphanumeric characters, kana characters, numbers, etc. are displayed on the display by key input on the keyboard, and the cursor is moved to the right one digit at a time. Indicates the next display position. Furthermore, by simultaneously pressing the key "GRAPH" which instructs semi-graph pattern display and each key, a semi-graphic pattern can be displayed. However, although alphabets, kana characters, numbers, etc. are displayed on the key tops of the keyboard, it is usually not possible to represent graphic patterns, and the operator inputs keys while referring to a semi-graphic pattern key layout diagram. Because the cursor has to be manually operated, it is easy to make a mistake, and at that time, the cursor moves, making it a cumbersome operation such as using the cursor movement key to move back one character and then redoing the semigraphic pattern key operation. required.

This will be specifically explained with reference to the drawings. FIG. 1 shows an example of the arrangement of keys on a keyboard. The input key 1 functions to input lower-shifted kana characters when the "kana" key 2 is pressed, and functions to input upper-shifted alpha characters when the "kana" key 2 is not pressed. Furthermore, when the “GRAPH” key 3 is pressed, the second
It functions to input various semigraphic patterns as shown in the figure. In Figure 2, the two-digit number (EF
) represents the input code, which is shown in Table 1. Note that code E represents (1110) and code F represents (1111). for example,
If you press key 4 without pressing the "GRAPH" key, "T" or "t" or "ka" will be displayed.
When pressing the "GRAPH" key at the same time, ""
Ceramic pattern is displayed.

<Problem to be solved> In order to input semigraphic patterns accurately and quickly using such a keyboard, it is necessary to fully understand the functions of the keys corresponding to various semigraphic patterns. However, this requires considerable skill, and key input of semi-graphic patterns has become troublesome for ordinary operators.

If the operator makes a mistake in entering a key in a semigraphic pattern, he or she can enter the correct key again, but the problem here is that most keys, except for special keys such as dakuten and handakuten, When a key is pressed, the cursor on the display device is shifted to the right by one character. Therefore, troublesome key operations were required to correct erroneous operations.

<Object of the Invention> An object of the present invention is to prohibit the movement of the cursor during key input of a semi-graphic pattern, thereby making it possible to easily and quickly correct erroneous key input of a semi-graphic pattern. An object of the present invention is to provide a cursor display control device.

<Structure of the Invention> The present invention provides a detection means for detecting simultaneous pressing of a first key for instructing semigraphic pattern display, another specified second key, and the first and second keys. The present invention is characterized in that it has a cursor movement prohibition means that prohibits movement of the cursor during key operation when simultaneous pressing of the keys is detected.

In the present invention, a personal computer means a desktop or portable microcomputer.

<Embodiment> FIG. 3 shows a block diagram of a personal computer to which the present invention is applied.

Key input data on the keyboard 5 is input to a CPU (central processing unit) 6, and its contents are displayed on a display 7. The key arrangement of keyboard 5 is the first
As shown in the figure, key group 1 is for inputting alphanumeric characters or kana characters, and key group 8 is for inputting numbers.
In addition to the function keys, a "GRAPH" key 3 for instructing display of a semi-graphic pattern and a "CTRL" key 9 for instructing a specified semi-graphic pattern are provided.

FIG. 4 shows a circuit added to the conventional circuit according to the present invention. In the figure, 10 is a NAND gate, 11
indicates the ADN gate, and the cursor address increase signal moves the cursor position on display 7 to 1.
Acts to shift the digit to the right. When “GRAPH” key 3 and “CTRL” key 9 are pressed at the same time, the output of NAND gate 10 becomes “0”.
AND gate 11 is inhibited and no cursor address increase signal is output no matter what key is input on the keyboard. Therefore, the cursor display position is not shifted to the right despite the semigraphic pattern input operation. Therefore,
If you hold down the "GRAPH" and "CTRL" keys at the same time, patterns will be displayed one after another in the same position by simply pressing the semi-graphic key, making it easy to search for patterns. When a desired pattern is displayed, the cursor can be moved in a desired direction by operating a cursor movement key.

FIG. 5 shows a CPU as another embodiment of the present invention.
A flowchart is shown when the control program is used.

When any key input is detected in step 12, it is determined in step 13 whether or not the "GRAPH" key is pressed. If the "GRAPH" key is pressed, the process proceeds to step 14. , it is determined whether the "CTRL" key is pressed. If the "CTRL" key is pressed, proceed to step 15 and display the semi-graphic pattern on the display without incrementing the cursor address; on the other hand, if the "CTRL" key is not pressed, the cursor address is advanced by +1 step and a semi-graphic pattern is displayed on the display.

<Effects of the Invention> According to the present invention, when the input key is pressed while the "GRAPH" key (first key) and the "CTRL" key (second key) are pressed simultaneously, the cursor display position changes. The semigraphic patterns are displayed in the same position without changing, so by changing keys and hitting them one after another, the semigraphic patterns corresponding to each key will appear in the same position one after another. Pattern searches can be easily performed and desired patterns can be quickly created.

Furthermore, according to the present invention, it is possible to instruct the prohibition of cursor movement simply by combining existing keys, so it is possible to prohibit cursor movement by simply adding hardware or changing software without changing the conventional keyboard. The invention can be practiced.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of the key arrangement of a keyboard to which the present invention is applied, and FIG. 2 is an explanatory diagram showing the operation of the semi-graphic pattern displayed in the key arrangement of FIG. 1 on the key top. Third
The figure is a block diagram showing the configuration of a personal computer to which the present invention is applied, FIG. 4 is a circuit diagram showing the main part of an embodiment of the invention, and FIG. 5 is a main part of a program of another embodiment of the invention. This is a flowchart. 5...Keyboard, 7...Display, 3...
"GRAPH" key (first key), 9..."CTRL"
key (second key), 10...NAND gate (detection means), 11...AND gate (cursor movement prohibition means).

Claims (1)

[Claims] 1. In a personal computer that has a semi-graphic display function and does not display a semi-graphic pattern that can be entered on the key tops of the keyboard, the first key that instructs to display a semi-graphic pattern and other specified A second key, a detection means for detecting simultaneous pressing of the first and second keys, and a cursor movement prohibition means for prohibiting movement of the cursor during key operation when the simultaneous pressing is detected. A cursor display control device for a personal computer.