JPH0554149B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a character processing method, and particularly to a character processing method that can input document information including half-width characters.

[Prior Art] In conventional character processing devices of this type, for example, character processing devices that process Japanese characters, half-width characters are numbers, alphabetic characters, and superscripts (superscripts) such as “2” in “X ² ”. , for example, is required to input subscripts such as "2" in "H ₂ O", but the character width is 1/2 of the normal character (full width character). Therefore, if there is an odd number of half-width characters in one line,
Subsequent characters may be misaligned with the line above or below. If the characters are misaligned in this way, for example, when editing a document,
It may be difficult to specify a range that is part of a document and spans several lines.

FIGS. 1A and 1B show the display state on the display screen and the printing state on the recording medium, respectively, when a shift occurs. In these figures, small squares and small rectangles represent full-width characters and half-width characters, respectively.

In FIG. A, DISP is a display screen. When the operator wishes to perform editing by specifying area A while referring to the display screen DISP, there is a line l containing an odd number of half-width characters in area A, so the diagonal line is There are cases where it is unclear whether or not a character is included in area A, such as full-width character C. In other words, area A cannot be specified.

Further, in FIG. 1B, P is a recording medium. That is, as shown in this figure, characters are misaligned during printing, which not only impairs the aesthetic appearance of the printed document but also makes it difficult to read.

In order to deal with such misalignment of characters, several methods have been adopted in the past.

For example, one method is to leave the misalignment of characters as is, and to set special rules when specifying an editing range. However, this method has the disadvantage that unified editing cannot be performed because the operator must be aware of these rules when specifying a range or when printing.

Further, as another method, there is a method in which two half-width characters are handled in units of characters to prevent the characters from being misaligned. However, according to this method, if the half-width character being input is an odd-numbered one, the odd-numbered half-width character is Since the characters are not displayed, it is difficult to insert another character between a set of half-width characters during editing.

[Objective] The object of the present invention is to solve the conventional problems related to editing processing, namely, replacing full-width characters with half-width characters;
To provide a character processing method that eliminates misalignment of character strings due to insertion of full-width characters or half-width characters, etc., and enables unified editing.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 2 is an overall configuration diagram of a character processing device to which the present invention is applied. That is, the device of the present invention includes an input means 1 for inputting full-width characters having a predetermined width and half-width characters having a width of one half of the predetermined width, a storage means 2 for storing character string data, Editing means 3 for correcting and editing the stored character strings
and a storage means 4 for correcting the alignment deviation of the character strings due to the mixture of full-width characters and half-width characters with respect to the edited character strings and the character strings inputted by the input means, and storing the corrected character strings in the storage means 3. I can do it.

FIG. 3 shows one of the character processing devices to which the present invention is applied.
An example is shown. Here, the CPU is, for example, a central processing unit in the form of a microprocessor, which performs calculations for character processing, logical judgments, etc., and is connected to the address bus AB, control bus CB, and data bus DB.
control each component connected to those buses.

Address bus AB transfers address signals indicating the components to be controlled by the microprocessor CPU. The control bus CB transfers and supplies control signals for each component controlled by the microprocessor CPU. The data bus DB transfers data between each component.

Next, the ROM is a read-only fixed memory, and stores control procedures and the like by the microprocessor CPU, which will be described later with reference to FIG. 6 and subsequent figures.

Further, the RAM is a writable random access memory having a configuration of 1 word and 16 bits, and is used for temporary storage of various data from each component.

DISK is a magnetic disk device that serves as external storage for created documents.

KB is a keyboard with various keys for instructing various functions to the character processing device, including alphanumeric keys, character symbol input keys such as hiragana keys, katakana keys, keys for specifying the start and end of kanji conversion, etc. Equipped with a funktion key.

FIG. 4 shows an example of the structure of the key code of characters input from the keyboard KB. In this example, the key code is 16 bits per character. and,
If the characters are full-width characters, as shown in A in the figure,
The most significant bit MSB is 0, the least significant bit LSB
The code of the full-width character is stored in the 14 bits from , that is, the 3rd to 16th bits. Also,
In the case of a half-width character, the most significant bit MSB is set to 1, as shown in B in the figure, and the lower seven bits represent the code of the half-width character.

Further, in FIG. 3, CBUF is a buffer memory that stores document data etc. input from the keyboard KB.

FIG. 5 shows an example of the data structure of the buffer memory DBUF. In this example, the buffer memory
DBUF has a data structure corresponding to the key code shown in FIG. In other words, one data D is 16
The most significant bit MSB is “0” or “1” to distinguish between full-width characters and half-width characters.
In the case of full-width character ASC, the 14 bits from the least significant bit, that is, the 3rd to
Stores the character code in 16 bits. For half-width characters HSC, the 3rd to 16th bits are for half-width characters on the left half, and the 3rd to 16th bits are for half-width characters on the right half.
Allocate 10 to 16 bits to store each code.

In FIG. 3, CR is a cursor register, the contents of which can be read and written by the CPU. A CRT controller CRTC, which will be described later, displays a cursor at a position on the display device CRT corresponding to the address stored in this cursor register CR.
Note that the cursor register CR expresses display coordinates in half-width units, and takes values of 0, 1, 2, 3, 4, . . . .

A CRT is a display device using a cathode ray tube, and the display pattern of dot structures such as characters and the display of a cursor on the display device CRT are controlled by a CRT controller.

CRT controller CRTC is cursor register
The contents stored in CR and buffer DBUF are displayed on the display CRT.

CG is a character generator, which generates character signals such as characters, symbols, and cursors to be displayed on the display device CRT.

The character processing device to which the present invention is applied, which includes each of these components, operates in response to various inputs from the keyboard KB.When an input is made from the keyboard KB, an interrupt signal is first sent to the central processing unit CPU. The central processing unit CPU reads various control signals stored in the ROM, and various controls are performed in accordance with these control signals.

In addition, the contents of the buffer DBUF can be displayed on the display device CRT.
Since the display means for displaying in correspondence with the upper position is well known, the explanation thereof will be omitted, and it will be assumed that the display is performed simply by storing document data etc. in the buffer DBUF.

Next, an outline of the first editing process performed by the character processing device to which the present invention is applied will be explained using FIG. Here, the first editing process is a process of replacing a character existing at the position indicated by the cursor with a full-width character (hereinafter referred to as an overwrite process) and an insertion process. Furthermore, in the following description, half-width characters on the left half and right half refer to half-width characters located on the left half and right half of a full-width character, respectively.

In FIG. 6, A to F show display examples in the case of overwrite processing.

A and B in the figure are cases in which the cursor CM points to a half-width character on the left half. In this case, when a full-width character "X" is overwritten from above a half-width character, two half-width characters, that is, Indicates that "B" and "C" are replaced by a single full-width character, ie, "X".

C and D in the figure are cases where the cursor CM is pointing to a half-width character on the right half, and if you overwrite the full-width character “X” from the cursor CM position, the character will be connected to the upper or lower line. The alignment of the cursor CM will be shifted, so replace the position where the cursor CM is with a half-width blank (space) SPC, and change the position of the next character, that is, from "E" to the full-width character "X"
Indicates to overwrite.

In the figure, E and F indicate cases in which a full-width character is overwritten on a full-width character, and are replaced in the same way as A and C in the figure, respectively.

In FIG. 6, G to L indicate the case where full-width characters are inserted.

In the figure, G and H indicate the case where a full-width character "X" is inserted before a half-width character, that is, "B" in the left half.

I in the figure indicates a case where a full-width character is inserted before a half-width character in the right half. In this case, if you overwrite the full-width character at the cursor position, the alignment of the characters will be shifted from the line above or below, so the half-width character, "C" in this case, and the full-width character, i.e. , in this case, add a half-width blank SPC between it and "X". Furthermore, since the number of half-width characters after the inserted full-width character “X” is an odd number, there is also a half-width character between the half-width character, “F” in this case, and the full-width character, “K” in this case. Add a blank SPC to correct the deviation.

In the figure, J indicates a case where a full-width character is inserted before a half-width character in the right half, and a blank is added after the half-width character for correction. In this case, as well as C, D and G in the figure, a half-width blank space is used.
SPC is added to insert a full-width character, but since the number of half-width characters after the inserted character is an even number, the half-width blank that existed before the insertion, in this case "E" The blank SPC that existed between "K" and "K" is removed.

In the figure, K and L indicate the insertion of a full-width character "X" when the cursor CM is on the full-width character, that is, in this case, the position of "B"; Indicates that it will be processed in the same way.

FIG. 7 is a flowchart showing an example of the first editing processing procedure.

First, in step S7-1, when one full-width character is input, in step S7-2,
Check whether the input character is to be overwritten or inserted, and if it is an overwrite process, go to step S7-13, and if it is an insertion process, go to step S7-
Proceed to step 3.

In step S7-3, it is determined whether the cursor is located on the left half or the right half of the full-width character. This determination is made using the cursor register CR.
This is done by referring to the contents of . That is, if the contents of the cursor register CR are an even number, that is, if the cursor is in the left half, step S7-
If the content of the cursor register CR is an odd number, that is, if the cursor is in the right half, the process goes to step S7-4.

In step S7-4, it is determined whether the character pointed to by the cursor is a full-width character or a half-width character. This determination is performed on the buffer corresponding to the cursor.
This is done by referring to the most significant bit MSB of DBUF. That is, if the character pointed by the cursor is a full-width character, the process advances to step S7-9, and if it is a half-width character, the process advances to step S7-5.

In step S7-5, one of the first full-width characters after the half-width character indicated by the cursor is
Determine whether the half-width character before the character is a blank SPC. If the character is a half-width blank SPC, the process proceeds to step S7-8, and if it is not a blank SPC, the process proceeds to step S7-6.

In step S7-6, from the first full-width character after the half-width character pointed to by the cursor,
Shifts the string up to the appropriate delimiter by one full-width character. Furthermore, the half-width characters up to the first full-width character are shifted one half-width character later.

Subsequently, in step S7-7, a half-width blank SPC is added to the gap for one half-width character created between the full-width character and the half-width character by this process. This gap is created to shift the half-width characters by one half-width character, and occurs at the beginning (cursor position) and the end of the string of half-width characters.

In step S7-8, the last blank in the string of half-width characters is removed, and the string of characters after the half-width character pointed to by the cursor up to one character before the removed blank is shifted one half-width character back, and the process advances to step S7-7. .

In step S7-9, the cursor is advanced by one half-width character. This is the cursor register
This is done by incrementing the contents of CR by +1 step.

In step S7-10, the character string from the character indicated by the cursor to an appropriate delimiter is shifted one full-width character later. The buffer corresponding to the gap at the position indicated by the cursor that results from this
Any character information may be stored in the DBUF.

In step S7-11, the input full-width character is stored in the buffer DBUF corresponding to the character position indicated by the cursor.

In step S7-12, the cursor is advanced by one full-width character. This is the cursor register
This is done by advancing the contents of CR by +2 steps. With this process, the process when one full-width character is input ends.

When performing overwrite processing, step
In S7-13, it is determined whether the character pointed to by the cursor is a full-width character or a half-width character. This determination is made by referring to the most significant bit MSB of the buffer DBUF corresponding to the cursor. If the character pointed to by the cursor is a full-width character, the step
Proceed to S7-11, and if it is a half-width character, step
Proceed to S7-14.

In step S7-14, it is determined whether the cursor is on the left half or the right half of the full-width character. This determination is made by referring to the contents of the cursor register CR. That is, if the contents of the cursor register CR are an even number, that is, the cursor is in the left half, the process proceeds to step S7-11, and if the contents of the cursor register CR are an odd number, that is, the cursor is in the right half, the process proceeds to step S7-15. move on.

In step S7-15, the half-width character indicated by the cursor is replaced with a half-width blank SPC.

In step S7-16, the cursor is advanced by one half-width character. This is the cursor register
This is done by incrementing the contents of CR by +1,
After this process is completed, the process moves to step S7-11.

Next, an outline of the second editing processing procedure performed by the character processing device to which the present invention is applied will be explained using FIG.

Here, the second editing process refers to a process of overwriting and inserting a half-width character into a full-width character or a half-width character existing at the position indicated by the cursor.

As shown in A in the figure, in the overwrite process when the cursor CM is on the left half of the full-width character "L", the half-width character input at the position indicated by the cursor, that is, "X" in this case, is Display it and add a half-width blank (space) SPC to the right half.

As shown in B in the figure, in the overwrite process when the cursor CM is on the right half of the full-width character "L", a half-width blank SPC is added to the left half, and the half-width character "L" input to the right half is added. Display “X”.

As shown in C in the figure, in the overwrite process when the cursor CM indicates a half-width character "M", the half-width character "X" inputted at the position indicated by the cursor CM is displayed. do.

As shown in D in the figure, when the cursor CM is on the left half of the full-width character "L", the insertion process is performed between the character "L" pointed by the cursor CM and the previous character "K". Then, a half-width blank SPC is added to the inserted half-width character “X”.

As shown in E in the figure, when the cursor CM is on the right half of the full-width character "L", the insertion process is performed between the character "L" pointed by the cursor CM and the next character "M". Then, a half-width space is added to the inserted half-width character “X”.

As shown in F in the figure, when the cursor CM points to a half-width character and the half-width character that is one character before the first full-width character after that half-width character, that is, the last half-width character of the half-width character string, is not blank. In the insertion process, the character "X" input between the character "L" pointed by the cursor CM and the previous character "K"
Insert a half-width blank SPC at the end of the half-width string
Add .

As shown in G in the figure, when the cursor CM points to the half-width character "L" and the last character of the half-width character string is a blank SPC, the blank SPC is removed and the cursor CM points to the blank SPC. The input character "X" is inserted between the character "L" and the previous character "K".

In any of these cases, after the overwrite or insert process, the cursor
CM moves one half-width character back.

Next, using FIGS. 9 to 12, the second
The editing process will be explained in detail. FIG. 9 is a flowchart showing an example of the second editing processing procedure; FIGS. 10 and 11 are explanatory diagrams illustrating the data storage state of buffer memory according to the cursor indicated position in half-width character overwrite processing; FIG. 12 is an explanatory diagram showing a state in which one full-width character is replaced with two half-width blank characters and stored in the buffer memory under a processing assumption.

First, when one half-width character is input in step S9-1, it is checked in step S9-2 whether that character is to be overwritten or inserted, and if it is overwritten, it is entered in step S9.
-3, and if it is an insertion process, go to step S9-4
Proceed to.

In step S9-3, it is determined whether the character pointed by the cursor CM is a full-width character or a half-width character. This determination is made using the buffer corresponding to the cursor.
This is done by referring to the most significant bit MSB of DBUF. If the character pointed to by the cursor CM is a half-width character, the process advances to step S9-9, and if it is a full-width character, the process advances to step S9-8.

In step S9-9, the input half-width character is stored in the buffer DBUF corresponding to the cursor position. If the value of the cursor register CR is an even number, that is, as shown in Figure 10, the cursor register
When CM is located at a position corresponding to the left half of the full-width character, the code of the input half-width character "X" is stored in the 3rd to 9th bits of the buffer DBUF. If the value of cursor register CR is an odd number, that is,
As shown in Figure 11, when the cursor CM is at a position corresponding to the right half of a full-width character, the code of the input half-width character "X" is transferred to the buffer DBUF.
Stored in the 10th to 16th bits.

In step S9-10, the cursor CM is advanced by one half-width character. This is done by incrementing the value of the cursor register CR by +1. With the processing of steps S9-10, the processing procedure when one half-width character is input is completed.

In step S9-8, the single full-width character indicated by the cursor CR is replaced with a half-width blank SPC character. This is as shown in Figure 12.
The most significant bit of the buffer corresponding to the cursor position
MSB is “1”, 3rd to 9th bits and 10th to 16th bits
This is done by storing a code corresponding to the half-width blank SPC in the bit.

When performing insertion processing, it is determined in step S9-4 whether the character pointed by the cursor is a full-width character or a half-width character. This determination is based on the most significant bit of the buffer contents corresponding to the cursor position.
This is done by referencing the MSB. Here, if it is determined to be a full-width character, proceed to step S9-5.
If it is determined that the character is a half-width character, the process advances to step S9-11.

In step S9-5, it is determined whether the cursor CM is at the right half position or the left half position of the full-width character. This determination is made using the cursor register.
This is done by referring to the contents of the CR. If the content of cursor register CR is an even number, that is, cursor CM
If it is in the left half, proceed to step S9-7;
If the contents of the cursor register CR are an odd number, that is, the cursor CM is in the right half, step S9-
Proceed to step 6.

In step S9-6, the cursor CM is advanced by one half-width character. This process is performed by incrementing the value of the cursor register CR by +1.

In step S9-7, the character string from the character indicated by the cursor CM to an appropriate delimiter is shifted backward by one full-width character. This is done by shifting the contents of the buffer DBUF one full-width character at a time. Note that after this process, any full-width character information may be stored at the position indicated by the cursor CM.

In step S9-11, it is determined whether the half-width character immediately before the first full-width character after the half-width character that indicates the cursor is a half-width blank SPC. If it is a half-width blank SPC, step S9
Go to −14, and if it is not a blank SPC, go to step
Proceed to S9−12.

In step S9-12, the character string from the first full-width character that exists after the half-width character indicated by the cursor CM to an appropriate delimiter is shifted one full-width character backward, and the half-width characters that exist up to that full-width character are Shifts a string of characters one half-width character back.

In step S9-13, the half-width character 1 generated between the full-width character and the half-width character by such processing is
Add a half-width blank SPC to the space between characters.

In step S9-14, one of the first full-width characters after the half-width character indicated by the cursor CM is selected.
Removes the blank SPC in front of the character, and shifts the character string one character before the removed half-width blank SPC one half-width character after the character pointed to by the cursor.

After steps S9-8, S9-13 and S9-14 are completed, the process advances to step S9-9.

In the above embodiment, input is performed from a keyboard, but the input device may be a tablet, an optical character reader (OCR), an online character recognition device, etc., as long as input characters can be obtained along with information on the character width. Any form can be used.

Further, in the embodiment, a blank space is added as necessary, but this can be done in any form as long as it is a character that is not displayed or printed. In addition, in the example,
When the cursor is on the right half of a full-width character, the cursor advances one position before insertion, but it is also possible to unify the method by inserting before (on the left side) the character pointed to by the cursor. .

Further, in the embodiment, the cursor is displayed with half width, but it goes without saying that if the cursor is full width, it may be regarded as the same as the cursor existing in the left half.

Further, in the above-described embodiment, only processing related to editing, such as overwriting or inserting characters, was described, but it can be easily applied to the case of inputting (creating) this document.

In addition, in the embodiment, in the overwrite process when the cursor is in the right half, input characters are positioned in the right half and added blanks are positioned in the left half. may be positioned. Similarly, regarding insert processing when the cursor is in the right half,
You can also position input characters on the right half and spaces on the left half.

In addition, in the overwrite process in the example, two half-width characters are replaced with one full-width character, but by adding a half-width space, etc., one half-width character is replaced with one full-width character. You can do it like this.

Furthermore, the insertion process can be reversed and applied to the process of deleting half-width characters.

[Effect] As explained above, according to the present invention, when inserting a half-width character, when shifting a full-width character, the full-width character is shifted in full-width units, so that the character string to be inserted and the line above or There will be no misalignment with the row below.

[Brief explanation of the drawing]

Figures 1A and 1B are diagrams showing the display and printing conditions, respectively, when a misalignment occurs in a character string due to a mixture of full-width characters and half-width characters in a conventional character processing device. An overall configuration diagram of a character processing device to which the present invention is applied, FIG. 3 is a block diagram showing one embodiment of a character processing device to which the present invention is applied, and FIG. 4 is a diagram showing one example of the configuration of a character key code. , FIG. 5 is a diagram showing an example of the data structure of a buffer memory as a storage means, FIG. 6 is an explanatory diagram illustrating the outline of the first editing process by the character processing device to which the present invention is applied, and FIG. 7 is an illustration thereof. A flowchart showing an example of the procedure of the first editing process, FIG. 8 is an explanatory diagram illustrating an overview of the second editing process by the character processing device to which the present invention is applied, and FIG. 9 is the second editing process. 10 and 11 are explanatory diagrams illustrating the state of data storage in the buffer memory according to the cursor indicated position in the half-width character overwrite process in the second editing process procedure, FIG. 12 is an explanatory diagram illustrating a state in which one full-width character is replaced with two half-width blank characters and stored in the buffer memory in the second editing processing procedure. 1... Input means, 2... Storage means, 3... Editing means, 4... Correction means, CPU... Central processing unit,
KB...Keyboard, DBUF...Buffer memory, ROM...Read-only memory, CRT...Display device, CR...Cursor register.

Claims (1)

[Scope of Claims] 1. A character processing method for displaying full-width characters and half-width characters inputted from an input means on a display screen of a display means, which comprises: Instructing a position, inserting a half-width character, and shifting the display position of a full-width character after the designated position by inserting the half-width character, shifting the full-width character by a full-width unit. Character processing method.