JPS61180283A - Word processor - 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 [Field of Industrial Application] The present invention relates to a word processor with an improved cursor display method.

[Conventional technology] In order to deal with cases where it is desired to create sentences using characters of various sizes, word processors display the created sentences in full-width, half-width, and double-width characters on the screen, and then change the size of these characters. There was one that reflected this in the printing results.

Conventionally, in such word processors, for example, the cursor for specifying any character on the display screen has the width of a half-width character. In this word processor,
The relationship between the sizes of full-width characters, half-width characters, single-width characters, and the cursor is shown in FIG. 6 (a).

As shown in (b), (c) and (d).

[Problem that the invention seeks to solve]

However, such word processors have the following problems.

■ Since the cursor is displayed in the size of a half-width character, if you want to move the cursor left or right after pointing to a full-width character, there are two ways to move it, as shown in Figure 7.
A passing occurs.

(2) When moving up and down, the cursor always moves in the vertical direction, so the position of the cursor relative to the displayed characters is not fixed as shown in FIGS. 8 and 9.

For this reason, there was a problem in that the correspondence between characters and the cursor was not determined, causing confusion for the user.

The present invention was made in order to solve the above-mentioned problems, and an object of the present invention is to realize a word processor in which the width of the cursor changes according to the width of the specified character, making it easier to perform various tasks on the display screen. do.

[Means for Solving the Problems] The present invention provides a word processor that displays a created sentence on a screen using characters of various widths and that has a means for indicating an arbitrary character on the display screen with a cursor. The first means calculates the integrated value of the character address and character width from the start of a line to the position indicated by the cursor, and the second means determines the direction of movement when the cursor is moved one step in the up, down, left, or right direction. and according to the movement direction determined by the second means, add up the character address or character width from the starting end of the line where the cursor is placed after movement, and combine this integrated value with the one determined by the first method. A third means for determining a character to place the cursor after movement based on the magnitude relationship of the integrated value, and updating the contents of the cursor information memory based on the character determined by the sixth means, and updating the determined character. , and a fourth means for instructing with a cursor whose display width is approximately the same as that of the word processor.

〔Example〕

The present invention will be explained below using the drawings.

FIG. 1 is a block diagram of an embodiment of a word processor according to the present invention.

In FIG. 1, 10 is a keyboard, 20 is a display device,
30 is a memory, and 40 is a CPU.

Characters corresponding to the sentence to be created are input from the keyboard 10. In the keyboard 10, reference numeral 11 is an indicating means for indicating an arbitrary character on the display screen with a cursor and indicating a character in a text memory (described later) corresponding to this character.

The display device 20 displays the sentence to be created.

The memory 30 stores programs and necessary information.

In the memory 30, 31 is a program memory;
A program showing the processing procedure performed by the word processor is stored. Reference numeral 32 denotes a text memory, in which text corresponding to the sentence desired to be created is stored. A cursor information memory 33 includes a position information memory 34, an address pointer memory 35, and a frame information memory 36.

The position information memory 34 stores position information on the display screen. The location information is (row 9 column).

It is composed of six elements: The rows and columns are
This corresponds to the address of the screen divided into double-byte character units like the grid of the board as shown in Figure 2. It is determined that the deviation occurs when the characters following an odd number of half-width characters are displayed with a deviation from the heavy weight of the matrix to the half-width character distribution, as shown in FIG. If 1 and 0 are assigned to the information indicating the presence and absence of a shift, respectively, the position information of the character located in the diagonally shaded area in FIG. 3 (1 row, 6 columns, shift) becomes (2, 2, 1).

The address pointer memory 35 stores an address pointer indicating which character of the character string in the text memory the cursor is pointing to.

The attribute information memory 36 stores the character information of the character pointed by the cursor. The attribute information includes full-width, half-width, and double-width information, and one of these is selected depending on the type of character indicated by the cursor.

The CPU 40 controls read and write operations for the memory section 30 in response to signals from the keyboard 10;
The display on the display device 20 is controlled. The CPU 4Q is provided with first to fourth means 41 to 44. The specific operations of these means will be described later.

Next, the operation of such a word processor will be explained.

FIG. 4 is a flowchart showing the processing procedure of the word processor of FIG.

The case of the display example shown in FIG. 5 will be explained.

The cursor is currently pointing to the character "LJ."

In this state, the first means 41 calculates the integrated value of the character address C and character width W from the start of the line t2 where the cursor is currently located to the position indicated by the cursor.

When a command is issued to move the cursor one step in either the up, down, left or right direction, the second means 42 determines the direction of movement. This is wlTD in the flowchart.

When moving the cursor upward, the character width is accumulated from the starting end of the line t where the cursor is placed after one movement. Then, assuming that the cumulative value S of the character width has become equal to or greater than the previously described cumulative value W, the last character that has been cumulative is determined to be the character to be moved. In the display example shown in FIG. 5, "m" becomes the character after the movement.

The same process is performed when moving the cursor downward.

When moving the cursor to the right, character addresses are accumulated from the start of the line t2 where the cursor is placed after the movement. Then, when the integrated value P of the address becomes larger than the above-mentioned integrated value C, the last integrated character is determined as the character to be moved. In the display example shown in FIG. 5, "M" becomes the character after the movement.

The same process is performed when moving the cursor to the left.

The third means 43 performs such integration and comparison/determination processing.

Next, the type of character after the movement is set in the attribute information memory 36. Further, from the integrated value S, the character string and the shift after the movement are calculated. As a result, the position information, address pointer, and attribute information are updated to those of the moved characters. These pieces of information are sent to the CPU 40, and the character after the movement is indicated with a cursor whose display width is approximately the same as that of the character. Such processing is performed by the fourth means 44.

[Effects of the Invention] According to such a word processor, the following effects can be obtained.

That is, since the width of the cursor changes depending on the width of the designated character, the correspondence between the cursor and the character is clear even if the cursor is moved up, down, left, or right. This makes it possible to easily perform operations on the display screen, such as character insertion and nine character correction.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the configuration of an embodiment of the word processor according to the present invention, FIGS. 2 and 6 are illustrations for explaining the display of processing information, and FIGS. 4 and 5 are illustrations for explaining the operation of the word processor in FIG. 1. , FIGS. 6 to 9 are explanatory diagrams of the operation of a conventional word processor. 10...keyboard 11...instruction means 20,
...Display device 3o...Memory 33...Cursor information memory 34...Position information memory 35...Address pointer memory 36...Attribute information memo IJ 40...CP
U41-44...First to fourth means Figure 7 Figure ε Figure q

Claims (1)

[Claims] In a word processor that displays a created sentence on a screen using characters of various widths, and has means for pointing a cursor to any character on the display screen, the cursor is pointed from the beginning of the line where the cursor is currently located. a first means for calculating an integrated value of a character address and a character width up to a position; a second means for determining a moving direction when moving a cursor by one step in either the up, down, left or right direction; Depending on the movement direction determined by the means, the character address or character width is accumulated from the starting end of the line where the cursor is placed after the movement, and based on the magnitude relationship between this integrated value and the integrated value obtained by the first means, a third means for determining a character to place the cursor on; and updating the contents of the cursor information memory based on the character determined by the third means, and placing the determined character as a cursor whose display width is approximately equal to that of the character. A word processor characterized by comprising: a fourth means for instructing.