JPH0531187B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] In interactive text editing processing, operations to delete one character or several characters are frequently performed. By pressing , the cursor is moved to the position of the first subsequent character, making it possible to significantly reduce the amount of cursor movement required to indicate the character to be deleted during a deletion operation.

[Industrial application field]

The present invention relates to a text editing device such as a Japanese word processor, and more particularly to a single character deletion method for a text editing device that greatly reduces cursor movement operations by enabling cursor movement using a single character deletion key.

Many text editing devices, such as program editing devices and Japanese word processors, are equipped with a single character deletion function in order to easily delete one to several characters or character strings. This is a function that deletes the character at the cursor position by pointing the desired character with the cursor and pressing the single character delete key or a key with an equivalent function.

Therefore, when editing text interactively,
This function is frequently used to delete characters one by one when correcting incorrectly input characters or unnecessary characters or character strings. Therefore, improvements in usability are required.

[Prior Art] The one-character deletion function allows the character present at the cursor position to be deleted by pressing the one-character deletion key once. Therefore, the conventional specification is that even if the one-character delete key is pressed when the cursor is located at a position where no character exists, this pressing operation becomes a no-op operation.

However, in interactive text editing processing, formatting functions such as tab alignment, centering, and right alignment can be used to place blank characters at predetermined positions on the display screen, as if inserting blank character data in front of characters or character strings. You can display characters and strings on the . For this reason, the cursor is often placed at a position where no character exists.

FIG. 3 is a diagram illustrating an example of displaying text on a conventional display screen.

Display characters ABC are displayed on screen 11 by right alignment.
The displayed characters DEFG are displayed in the center of the display screen 11 by centering, and the displayed characters HJK and LMN are displayed in tab alignment, and in either display format there is a blank character in front of them. Characters or character strings are displayed at specified positions within a line, as if data had been inserted.

Here, for example, if the cursor 12 is at the position shown and you want to delete the displayed character A, press the cursor movement key, move the cursor 12 exactly in the direction shown by the arrow to the position of the displayed character A, and You need to press the delete key.

[Problem that the invention seeks to solve]

As described above, conventionally, when deleting one character, it is necessary to move the cursor to the position of the character to be deleted using the cursor movement key, and then press the one character deletion key. Normally, the cursor movement key has the function of moving the cursor at high speed when kept pressed, but in order to accurately stop the cursor at the position of the character to be deleted, it is necessary to press the cursor movement key several times. .

Therefore, when deleting incorrectly input characters, unnecessary characters, etc., there is a problem in that the cursor movement operation until the single character deletion key is pressed is complicated and takes time.

[Means for solving problems]

FIG. 1 is a block diagram of a circuit showing one embodiment of the present invention.

1 is a processor that controls the entire text editing device, 2 is a ROM that stores programs that instruct the operations of processor 1, 3 is a memory that stores programs and data, and 4 is used to move the cursor to the next location by pressing a character delete key. This is a cursor movement function that moves the cursor to the first character position.

5 is a character generation circuit that generates a character pattern from a character code; 6 is a display control circuit that displays the character pattern read from the memory 3 on a display section 7; 7 is a display section that displays the character pattern; 8 is a keyboard;
9 is a disk control circuit that controls the disk 10;
10 is a disk for storing programs, data, etc.

When the one-character delete key on the keyboard 8 is pressed, the processor 1 transfers the cursor movement function 4 from the memory 3.
According to the instruction of this cursor movement function 4, check whether a character exists at the current position of the cursor or not. If a character exists, delete the character at the cursor position and position the cursor immediately after that character. , if a character does not exist, the cursor is moved to the position of the first subsequent character.

[Effect]

With the above configuration, the operator only has to press the one-character delete key on the keyboard 8 once, and the processor 1 can then, based on the instructions from the cursor movement function 4,
The cursor is moved from the current cursor position to the position of the first character that follows, so if you want to delete the first character that follows, press the single character delete key again to delete the single character. This makes it possible to improve the usability of the single character deletion key.

〔Example〕

FIG. 2 is a flowchart explaining the operation of FIG. 1.

In FIG. 1, a processor 1 starts operation by reading a program from a ROM 2, controls a disk control circuit 9, and stores a program from a disk 10 into a memory 3. At this time, the cursor movement function 4 is also stored in the memory 3. The processor 1 processes operator commands and character codes input from the keyboard 8 based on instructions from a program stored in the memory 3.

Processor 1 reads a character pattern corresponding to a character code input from keyboard 8 from character generation circuit 5 and stores it in a buffer area of memory 3. The display control circuit 6 reads the character pattern from this buffer area and displays it on the display section 7 as shown in FIG.

Here, when the operator presses the one character delete key on the keyboard 8, the processor 1 monitors the press of the one character delete key as shown in FIG. Checks whether a character exists at the cursor position based on .

The buffer area of the memory 3 corresponds to the display on the normal display section 7, and when characters are displayed as shown in FIG. It is possible to determine whether or not it exists.

If a character exists at the cursor position, delete the character at the cursor position and re-edit. Move the cursor to the character position immediately after the deleted character and move on to the next process. This process is the same as the conventional one.

If there is no character at the cursor position, the processor 1 calculates the distance from the cursor position to the first character position following the cursor position based on the character pattern storage position in the buffer area of the memory 3, and then selects the first character following the cursor position. Position the cursor at a location.

That is, the processor 1 moves the cursor 1 shown in FIG.
The distance from the position of 2 to the position of the displayed character A is
Calculate on the buffer area of memory 3 and move cursor 1
2 in the direction of the arrow and position it at the position of the displayed character A.

Here, when the one-character delete key is pressed, the operation shifts to deleting the character at the cursor position and re-editing. That is, the displayed character A in FIG. 3 can be deleted. If the character deletion key is not pressed, the process moves to the next step.

〔Effect of the invention〕

As described above, the present invention makes it possible to move the cursor to the position of the character to be deleted by pressing a key that instructs deletion of one character, thereby improving the operability of the text editing device. or,
This is particularly effective in reducing cursor movement operations when similar editing is performed over complex lines.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a circuit showing an embodiment of the present invention, FIG. 2 is a flowchart explaining the operation of FIG. 1, and FIG. 3 is an example of displaying text on a conventional display screen. This is a diagram. In the figure, 1 is the processor, 2 is the ROM, and 3 is the processor.
4 is a memory, 4 is a cursor movement function, 5 is a character generation circuit, 6 is a display control circuit, 7 is a display section, 8 is a keyboard, 9 is a disk control circuit, 10 is a disk, 11 is a display screen, and 12 is a cursor. .

Claims (1)

[Claims] 1. When text is displayed on a display screen and text is edited through interaction with an operator, a character to be deleted is indicated with a cursor and one character is deleted by pressing a key once. In a text editing device with a deletion function, when a key to instruct deletion of a character is pressed, the cursor position is in an area where no characters exist due to the formatting function that displays a character string at a predetermined position within a line. , cursor movement function 4 that moves the cursor from the current position to the first subsequent character position
When the key instructing deletion of one character is pressed, if a character exists at the cursor position, the character is deleted and the cursor is positioned immediately after the character, and when there is no character at the cursor position, the A text editing device characterized in that a cursor movement function positions the cursor at the position of the first subsequent character.