JPS62154168A - Sentence input device - Google Patents

Abstract

PURPOSE:To confirm characters inputted at each relevant time point with no shift of a display area even at a time point immediately after the replacement of the character of the final digit of the 1st line or the insertion of characters, by displaying both the character where a cursor is set and the character of the final digit of the line immediately preceding the line of said character where the cursor is set. CONSTITUTION:When characters are inputted, a sentence editing means 3 performs the replacement or insertion of those input characters and then given an instruction for the forward shift of a cursor. Thus the cursor moves forward up to the 7th digit from the final digit of a LCD display device 9 are then tries to move to the next digit. Here the displayed character is shifted by a digit. Then the cursor is moved to the 7th digit from the final one after the input of characters and therefore the characters within a display driver 5 are shifted by a digit. At the same time, the character data on the head digit of the 2nd line stored in a character buffer 8 is stored in the final digit of the driver 5 and then displayed. then the next characters are inputted.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a text input device for displaying input text and updating and editing the input text according to the display screen.

BACKGROUND OF THE INVENTION In recent years, with the spread of personal computers and word processors, opportunities to input text into machines have increased, and text input devices are increasingly required to be easier to use. Under these circumstances, screen editors are used in most input devices because they allow users to easily input and edit text while looking at the screen. Sentences output from such text input devices come in various formats and sizes, and the number of columns on the display screen does not necessarily match the number of columns in the output sentence. For this reason, a method is usually used in which the text near the cursor is displayed among the stored texts and added, changed, or deleted, and the display screen is changed as the cursor moves.

Conventionally, when a sentence of 40 characters per line as shown in FIG. ) is taken into a line buffer, and the character data of the necessary area from this line bar and sofa is stored in a display driver and displayed on an LCD display or the like. When displaying the contents of the next line, character data of the next line is newly imported into the sofa instead of the currently displayed line and displayed in the same manner. In this case, if the number of digits of the LCD display and the display driver that drives it is equal to the number of digits for one digit, the contents of the row bar sofa are stored as they are in the display driver, but If the number is small, for example, if it is about 26 digits, the display area output to the display driver side in the row buffer will be scrolled. and display
The line number of the line and the display area in the line buffer 7 are determined by the current cursor position, that is, the address in the text memory of the character where the cursor is placed, and are scrolled as the cursor position moves. . The character where the cursor is placed is always displayed.

The cursor position is moved by inserting or replacing small characters in the cursor movement command. That is, as shown in FIG. 16, "Th" displayed at the end of the line on the LCD display
If you want to replace ``1s'' with the characters ``5econd'', first set the replace mode and move the cursor to ``T''.
" and input the above characters. Then, the display screen will be updated as shown in Figure 16 (B), (C), (C), (E). Figure 16 (E) In this case, the cursor position is the last character of the first line (however, it is a space in this example), and in this state, the cursor position is the 5th character n.
”, the cursor position becomes the first digit character of the second line, and immediately after the input, the contents of the line Pa Sofa are rewritten to the contents of the second line, and the contents are shown in Figure 16 (F). The character string at the beginning of the second line is displayed.

Further, even when similar characters are input in the insert mode, immediately after inputting the sixth character "nn", the display screen is updated to the character string on the second line in the same manner as described above.

Problems to be Solved by the Invention However, in the text input device configured as described above, when replacing or inserting a character at the position of the last character in a line,
Because the display moves to the beginning of the next line, you cannot confirm the character that was replaced or inserted just before (n in this example). To confirm, move the cursor back once and display the previous line. There were problems in that it was not necessary and the work was complicated.

The present invention solves the above-mentioned problems, and even if processing such as character replacement, insertion, or cursor movement is performed at the last column of a line, the cursor is not moved to confirm the character immediately before the cursor position after processing. An object of the present invention is to provide a text input device that does not require moving the text.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has the purpose of solving the above problems.When the cursor position moves and reaches a predetermined digit at the end of the first row, the display driver displays Store the data at the end of the first row in the second row adjacent to row 1, store the data of the first row in the other digits of the display driver, and leave this state. The cursor position is moved to the end of the second line.

Effect With the above configuration, the cursor position is
If you insert or rewrite a character when it is in the last column of the first line, the cursor will move to the second line while the last column of the first line remains displayed on the display screen, and the cursor position will change. Even if is on the second line, you can display both the character where the cursor is placed and the character immediately before it belonging to the first line, that is, the character in the last column of the first line. Therefore, even after replacing the character in the last digit of the first line or immediately after inserting a character there, the character input at that time can always be confirmed without moving the display area.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 is a block diagram of a text input device according to a first embodiment of the present invention.

In the figure, 1 is a character input means that includes a keyboard and outputs characters input by the keyboard and codes of editing commands. 2 is a text storage means for storing the code string output from the character input means 1; 3 is for adding/already input character strings to the text storage means according to commands input by the character input means 1; Text editing means for changing the stored characters and instructing movement of the cursor position, 4 is a display line for storing the line to which the cursor is currently pointing among the texts stored in the text storage means 2. buffer; 6 is a display driver that extracts characters near the cursor from the line text stored in the line buffer 4 and drives the display means; 6 is a cursor that controls the cursor position according to the text editing means; control means,
Reference numeral 7 denotes an LCD display that displays part of a row under the drive of the display drivers.

In this embodiment, the number of digits of the row pad/sofa 4 is 132 digits, which is the number of digits of the row sentence. Also, the LCD display 7 has 4o
Since the digit display is used, the number of digits of the display driver is also 4.
Set to 0 digit. In this embodiment, a display character buffer 8 is newly provided to store the data of the first digit of the next line after the line stored in the line buffer 4, and the last digit of the LCD display 9 is It is configured to display characters stored in a character buffer 8.

In the character buffer 8, as shown in FIG. 2 (a),
For example, if the first line of characters is displayed, frame 1
The character data in the area surrounded by 0, that is, the character data for the first digit of the second line, is stored in advance. however,
In the figure, an area surrounded by a broken line frame 12 indicates an area of data stored in the display driver 5 within an area of one digit in the row buffer.

The operation will be explained below according to the flowchart shown in FIG. When a character is input, the text editing means 3 inserts or replaces the character, and then instructs the cursor to move forward. Then, the contents of the display driver 1 and driver 6 are newly rewritten, and the next character input is awaited. As characters are input one after another and the cursor position moves accordingly, the character data in the display driver also shifts one character at a time. In other words, the display screen is scrolled. in this case,
In this embodiment, the cursor is scrolled while leaving a display area for digits after the cursor. In other words, the cursor advances from the last digit to the seventh digit on the LCD display 9, and when it attempts to move to the next digit, the displayed characters are partially shifted.

However, when a certain character is input and the cursor position is instructed to move forward, if the last digit of the first line is already displayed, that is, the cursor position is the 7th line from the last digit of the first line. If so, the characters in the display driver S are nofted by one digit, and the character data of the first digit of the second line, which was previously stored in the character buffer 8, is
As shown in b), the character is stored in the last digit of the display driver 6, and the character is displayed in the last digit of the LCD display 9.

Then, wait for the next character to be input.

Thereafter, even if there is an instruction to move the cursor position, the displayed characters are not scrolled, and only the cursor position is moved. Then, when the cursor position is the first digit of the second line and the cursor is displayed on the last digit of the LCD display 9, the character is replaced or inserted there, and the cursor position is When there is an instruction to move , the character data of the second line is stored in the line buffer 74 instead of the character data of the first line, although this is not shown in the flowchart. Then, data for the first 4° digits is newly stored in the display driver 5, and characters for 40 digits from the first digit of the second line are displayed instead of the characters in the - line. In this case, the cursor position is of course the second digit of the second line.

Next, the case of moving the cursor backward will be explained based on the flowchart of FIG. First, when the cursor back key is pressed, the text editing means 3 issues a command to move the cursor position. Then, the cursor position is moved backward by the cursor control means 6. If the cursor position is still on the currently displayed line, the contents of the area including the current cursor position are displayed without rewriting the contents of the line/'1 buffer. However, when the cursor position moves to the previous line, the contents of the line bar and I file are rewritten to the data of the previous line, and at the same time, the character buffer 78 contains the data of the first line of the original line. Stored. Then, the last column of the display driver 6 stores the data of the first column of the original row, and the other columns store the data of the last column of the previous row.
It is displayed on the display 9.

A specific example of the operation of the text input device configured as described above will be described below. However, due to the drawing, LC
Assume that the D display has 725 digits.

An example of characters input from the character input means 1 “~.

Th1s is first 1ine of sam
ple text.

Th1s is 5 seconds 1ine of sa
mple text, --” is stored in the text storage means 2, and one digit of character data therein is stored in the line buffer 74.Then, as shown in FIG. When the first line is at the cursor control means, the first line of the text stored in the text storage means 2 is stored in the line buffer 4, and at the same time the second The first character of the line “i”
I+ is stored in character buffer 78. Then, part of the character string stored in the line buffer 14 and the characters stored in the character buffer 8 are simultaneously stored in the display driver 5, and displayed on the LCD display 9 as shown in FIG. Is displayed. Also, the cursor control means 6 displays the LCD display 9.
A cursor is displayed at the T” position.

Next, write the string after the cursor position for 5 seconds”
We will explain the case of replacing it with the character string . First, the character input means 1 informs the text editing means 3 that it is in the replacement mode, and then the character input means 1 then S
”, “e”, “c”, “o”.

When you input "n" or "d", each time a character is input, the character pointed to by the cursor among the sentences stored in the sentence storage means 2 is replaced with the input character, and at the same time, the line buffer 1 is
The input character is stored at the cursor position 4, the display on the display is changed, and the cursor is moved one column to the right by the cursor control means 6, as shown in FIG. 6(b). From then on, the display is updated in order as shown in Figure 5 (C), (E), (E), (E), and immediately after the first character of the next line is replaced, it changes to Figure 6 (G). The beginning of the next line is displayed as shown.

In this case, you can always check the characters immediately before and after the cursor, which is very convenient.

Next, the case where the character string "5econd" is inserted in the state shown in FIG. 5(a) will be explained with reference to FIG. 6. First, the character input means 1 instructs the text editing means 3 to be in insert mode. Next, when you first input (13++) from the character input means 1, each time a character is input, the input character is inserted at the cursor position of the text storage means 2,
At the same time, the contents of line buffer 4 and character buffer 8 are updated to change the display. Then, as shown in FIG. 9(b), the cursor is moved to 1 by the cursor III N means.
Move only the column to the right. From then on, each time a character was entered, the display was updated as shown in Figure 6 (c), ni), (e), and (v), and "d" was inserted at the beginning of the next line. Immediately after, the beginning of the next line is displayed as shown in Figure 6()), and even in this case, the line immediately before the cursor is always displayed.
You can check the characters immediately after.

Next, a case in which the cursor is moved to the right from the state shown in FIG. 5(a) will be described with reference to FIG. 7.

When a cursor advance code is input from the character input means 1, the cursor moves forward by one column by the cursor control means 6, and the display changes to the one shown in FIG. Figure 7 (c), ni), (
When the cursor moves forward as in (e) and (e) and a cursor advance code is further input, the character string in the second line of the sentence stored in the sentence storage means 2 is stored in the line barrif 74. The display is updated as shown in FIG. 7 (g), and even in this case, the characters immediately before and after the cursor can be confirmed.

Next, the case where the cursor is located at the fourth character on the second line and the cursor is moved back will be described with reference to FIG. When a cursor retreat code is input from the character input means 1, the cursor is moved back by one column by the cursor control means 6, and the display changes as shown in FIG. The cursor moves back as shown in Fig. 8 (c) and d). Furthermore, when the cursor retreat code is input, the character string in the first line of the text stored in the text storage means 2 is stored in the line buffer 74,
The first character of the second line is stored in the character buffer 8 and the display is updated as shown in FIG. 8 (e), allowing the user to confirm the first character of the next line.

As described above, according to this embodiment, the character buffer 8 and the LC
By providing the D display 9, even if you perform processing such as character replacement, insertion, or cursor movement at the end or beginning of a line, you can check the character input just before the cursor position after processing, that is, the character input at that time. can do. If you can always check the characters before and after the cursor while editing, you can edit sentences more accurately and quickly, which has a great effect in terms of ease of use.

Note that in this embodiment, a line buffer and a character buffer are used as display buffers, but a pointer pointing to the start address of the character string may be provided and the character string in the text storage means may be directly displayed by the display driver. . Furthermore, the display of the first character of the next line, that is, the number of characters stored in the character buffer, does not need to be just one character. Also, change the display to LC.
It is not necessary to limit the D display and the character input means to the keyboard, and other input/output means may be used.

A second embodiment of the present invention will be described below. In FIG. 9, the hardware configuration below the character input means 1 is the same as that of the first embodiment. However, in this embodiment, the program is configured so that the character buffer 8 stores the data of the first line before the line stored in the line buffer 74, and the character buffer 8 stores the first line data of the line stored in the line buffer 74. It is configured to display the characters stored in the bag 78.

When characters on the second line are being displayed, character data for the last digit of the first line is stored in the character buffer 8 in advance.

The operation will be explained below according to the flowchart in FIG. 1Q. First, when a character is input in the center of a line, the text editing means 3 inserts or replaces the character as in the first embodiment, and then instructs the cursor position to move forward. Then, the contents of the display driver 6 are newly rewritten, and an area of several digits including the cursor position is stored in the display driver. The text editing means 3 then waits for the next character to be input. As characters are input one after another, the display screen is scrolled accordingly in the same way as in the first embodiment. If a character is input while the cursor position is at the last digit of the first line, , the cursor position moves to the first technique on the second line,
It becomes necessary to display the characters on the second line. In this case, the data in the character buffer 78 is first stored in the first row of the display driver 5, and then the data in the row buffer 74, which has been rewritten from the character data in the first row to the character data in the second row, is stored in the other columns. The data of the first digit of is stored.

These characters are then displayed one after another on the LCD display 9.

The operation of the second embodiment configured as above will be specifically explained below. It is assumed that a character string similar to that in the first embodiment has been inputted and stored in the text storage means 2. When the cursor position is T# on the first line as shown in FIG. The first character string
The character string in the row is stored in the row buffer 4. Then, a part of the character string stored in the line buffer 4 including the above-mentioned "T" is stored in the display driver 5 and displayed on the LCD display 9. Further, the cursor control means 6 displays a cursor at the "T" position on the LCD display 9.

Next, the operation when replacing the character after the cursor will be explained. 1. Set it to replace mode and select S'", "e
'', ``C''', and ``0'', the display is updated as shown in Figure 11 (b), e→, ni), and (e), as in the first embodiment, and the first line Immediately after the character in the last digit of the eye is replaced, the next character string in the second line is displayed as shown in Fig.
It is the first digit of the line, and as mentioned above, it is the character buffer 7.
The character string at the end of the first line stored in 8 will be displayed on the first digit of the LCD display 9, and the character string on the second line will be displayed from the first digit after the second digit. You can check not only the character immediately after, but also the character immediately before.

Next, the case of inserting a character string in the state shown in FIG. 11(a) will be described with reference to FIG. 12.

First, if you enter insert mode and enter the same string as last time, the display will be updated as shown in Figure 12 (b), (c), ni), and (e), and the last digit of the first line will be Immediately after the characters are replaced, the character string on the second line is displayed as before, as shown in FIG. 12(f). In this case as well, the cursor position is naturally the first digit of the second line, and the last character of the first line is displayed on the first digit of the LCD display 9 as before, so the character immediately before the cursor You can check.

Furthermore, even if only the cursor is moved forward without entering any characters, the display screen will be as shown in Figures 13(f) and (b).

(C), (B), and (E), and as shown in Figure 13 (F), the character string at the end of the first line along with the character string in the second line (however, it becomes a space in the figure). ) can be displayed.

If you simply move the cursor backward, the display screen changes as shown in Figure 14 (A), (B), (C), (C), (E), and the cursor position is at the end of the first line. Even when the digit is reached, the second line is displayed. When the cursor moves further back, the first line will be displayed.

Effects of the Invention According to the present invention, when the cursor position moves and reaches a predetermined digit at the end of the first row, the end digit of the display driver is set to the first digit in the second row adjacent to the first row. The data of the character at the end of the row on the row side is stored, and the data of the first character is stored in other digits of the display driver.
The data of the line is stored, and the cursor position moves to the end of the second line in this state. The characters in the last column of a line can be displayed together, so even if you have just replaced the character in the last column of the first line or inserted a character there, you do not have to go out of your way to move the display area. You can always check the characters you entered at that time.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a text input device according to the first embodiment of the present invention, Fig. 2 is a diagram showing the data area stored in the display driver of the text input device, and Fig. 3 is the operation of the text input device. FIG. 4 is a flowchart showing the operation of the device, FIGS. 6, 6, 7, and 8 are views showing the display screen of the device, and FIG. A block diagram of the text input device in the embodiment, FIG. 10 is a flowchart showing the operation of the device, FIGS. 11, 12,
Figures 13 and 14 are diagrams showing the display screen of the device;
FIG. 5 is a diagram showing an example of a sentence input to a text input device in the explanation of the conventional example, and FIG. 16 is a diagram showing a display screen of the text input device in the conventional example. 1... text input means, 2... text storage means, 3
...Text editing means, S... Display driver, 6
...Cursor control means, 9...LCD display. @Figure 1 LC, DA * Figure 2 Figure 5 乃-SOLKU Otsu method Figure 6 Figure 7 Figure 8 Figure 9 LCD and Suqin Figure 1C Figure 1! Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 - Sol

Claims (1)

[Claims] A character input means for converting input characters and editing commands into electrical signals, a text storage means for storing character string data input by the character input means, and an edit command input by the character input means. Adding, deleting, updating character strings stored in the text storage means,
and a text editing means for moving a cursor, a display means for displaying characters stored in the text storage means, a display driver for storing character data to be displayed on the display means, and a display driver for storing character data to be displayed on the text storage means. and cursor control means for displaying a cursor on the display means according to the address number of the character on which the cursor is placed, and when the cursor position moves and reaches a predetermined digit of the first line, the end of the display driver The character data of the line end on the first line side of the second line adjacent to the first line is stored in column , and
Store the first data in other digits of the display driver,
In this way, the cursor position is further moved to the above-mentioned line end of the second line while the data of the first row and the data of the above-mentioned line end of the second line are both stored in the display driver. A text input device configured as follows.