JPH0679213B2 - Character processor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a character processing device, and more particularly to a character processing device capable of inputting document information including half-width characters.

[Prior Art] In a conventional character processing device of this type, for example, a character processing device for processing Japanese sentences, half-width characters are numbers or letters, for example, superscripts such as " ² " in "X ² " (superscript). , for example, it is required to enter the "H ₂ 0" subscript (subscript), such as in the "2" or the like, the character width is a half of normal characters (full width characters) Therefore, when there are an odd number of half-width characters in one line, the characters after that may be out of alignment with the lines above or below. If the characters are misaligned in this way, it may be difficult to specify a range that constitutes a part of the document and extends over several lines when the document is edited, for example.

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

In FIG. 3A, DISP is a display screen. When the operator desires to perform the editing work by designating the area A while referring to the display screen DISP, the area A relating to the editing has a line 1 including an odd number of half-width characters. There are cases where there is a character such as the full-width character C that is applied and it is not clear whether or not it is included in the area A. That is, the area A cannot be designated.

Further, in FIG. 1 (B), P is a recording medium. That is, as shown in this figure, the 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, conventionally,
Several methods have been adopted.

For example, one of them is a method in which the deviation of characters is left as it is and a special rule is set when the editing range is specified. Specifically, reference numeral C in FIG. 1 (A)
For the problem of whether or not to include the full-width character indicated by in the area indicated by the boundary line A, no correction is made when the character is input, and it is left displaced as indicated by the diagonal line in FIG. 1 (A). In addition, when the range is designated at every time, for example, when editing, the rule of "include" or "not include" the character on the boundary line A indicating the frame is designated in advance or each time. However, this method has a drawback in that the operator must be aware of this rule when designating the range or at the time of printing, so that it is not possible to perform a unified editing.

In addition, as another method, there is a method in which half-width characters are handled in units of two characters to prevent the characters from being misaligned. However, according to this method, when the half-width character being input is an odd-numbered half-width character, the odd-numbered half-width character is input until the next half-width character, that is, the even-numbered half-width character is input. Since the characters are not displayed, it is difficult to insert another character between the set of half-width characters when editing.

[Purpose] The object of the present invention is to eliminate the conventional drawbacks associated with the processing of inputting half-width characters, to enable input of half-width characters character by character, and to prevent deviation from the upper line or the lower line. Therefore, it is to provide a character processing device and a character processing method that enable unified editing.

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

FIG. 2 shows an example of the entire configuration of an apparatus to which the present invention is applied. Here, input means 1 for inputting full-width characters having a predetermined width and half-width characters having a width half the predetermined width, With respect to the input character string having full-width characters and half-width characters, a correction unit 2 that corrects a misalignment of the character strings due to a mixture of full-width characters and half-width characters, and a storage unit 3 that stores the corrected character string. Equipped with.

FIG. 3 shows an embodiment of the character processing device of the present invention. Here, the CPU is, for example, a central processing unit in the form of a microprocessor, and performs arithmetic operations for character processing, logical judgments, etc., and an address bus AB, a control bus CB, a data bus.
Control each component connected to those buses via DB. The CPU functions as a display control unit together with a CRT controller described later by executing a control procedure stored in a ROM described later.

The address bus AB transfers address signals which indicate components which are symmetrical to the control of the microprocessor CPU. The control bus CB transfers and supplies control signals of the respective constituents which are symmetrical to the control of the microprocessor CPU. The data bus DB transfers data between the constituent devices.

Next, the ROM is a read-only fixed memory,
The procedure of control by the microprocessor CPU, which will be described later with reference to the drawings, is stored.

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

DISK is a magnetic disk device as an external storage of created documents.

KB is a keyboard that is an input means, and instructs various functions for the character processing device, including alphanumeric keys, hiragana keys, katakana keys, and other character symbol input keys, and keys that specify the start and end of kanji conversion. With various function keys for.

FIG. 4 shows an example of the structure of the key code of the character input from the keyboard KB. In this example, the key code is 16 bits per character. When the character is a full-width character, the most significant bit MSB is set to 0 and the 14th bit from the least significant bit LSB, that is, the 3rd to 1st bits, as shown in FIG.
The code of the full width character is stored in 6 bits. In the case of half-width characters, the most significant bit MSB is set to 1 as shown in (B) of the figure, and 7 from the least significant bit LSB.
The bit, that is, the 10th to 16th bits, stores the code of the half-width character, and the 2nd to 9th bits store dummy data, for example, "0".

Further, in FIG. 3, DBUF is a buffer memory,
It stores the 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. That is, one data D consists of 16 bits, and the most significant bit MSB stores "0" or "1" for distinguishing between full-width character and half-width character, and in the case of full-width character ASC. Least significant bit L
The character code is stored in the 14th bit from the SB, that is, in the 3rd to 16th bits. Regarding the half-width character HSC, the third to ninth bits are assigned to the left half-width character, and the tenth to 16th bits are assigned to the right half-width character, and the respective codes are stored.

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

CRT is a display device using a cathode ray tube, and the display device C
CRT controller CRTC controls the display pattern of the dot configuration such as characters on RT and the display of the cursor.

The CRT controller CRTC displays the contents stored in the cursor register CR and the buffer DBUF 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 according to the present embodiment, which includes the respective constituent elements,
It operates according to various inputs from the keyboard KB, and when an input is made from the keyboard KB, first, an interrupt signal is sent to the central processing unit CPU, and the central processing unit CPU is stored in the ROM. Various control signals that are present are read out, and various types of control are performed according to those control signals.

It should be noted that display means for displaying the contents of the buffer DBUF in correspondence with the position on the display device CRT is publicly known, and therefore its explanation is omitted, and the display is performed by simply storing the document data and the like in the buffer DBUF. And

Next, the outline of the display processing by the character processing apparatus of this embodiment will be described with reference to FIG.

FIG. 6 shows a part of the screen when creating a document. First, in (A) in the figure, the characters entered up to the L-th line are displayed on the display CRT, and some full-width characters are entered on the (L + 1) th line, and then four half-width characters are entered. It shows that.

Next, FIG. 6B shows a state in which one more half-width character is input. At this time, a half-width blank indicated by SPC is added next to the input character, that is, "O" in this case, and the cursor CM is positioned below this blank.

Next, FIG. 6C shows a state in which one half-width character is further input after the state shown in FIG. At this time, the newly input character "KA" is displayed at the position of the blank portion SPC added in the same figure (B), and the cursor CM is a half-width character "KA".
Moved to the position next to, and the blank SPC added in (B) in the figure has been removed.

Then, (D) in the figure shows a case where one full-width character is input after the state shown in (B) of the figure. In this case, the blank SPC added in (B) in the figure is saved as it is, and the newly input full width character "K" is displayed next to the blank SPC.

Further, (E) in the figure shows a case where one full width character is input after the state shown in (C) in the figure. In this case the cursor
The newly entered character "K" is displayed at the position indicated by the CM. The same applies when full-width characters are input after the state shown in FIG.

Also, when a double-width character is input in (D) and (E) in the figure, it is processed in the same manner as in the case of a full-width character.

That is, when the number of input half-width characters is an odd number, a half-width blank is added to correct the misalignment of subsequent characters.

This processing will be described in detail with reference to FIGS. 7 to 10.

FIG. 7 is a flow chart showing an example of a processing procedure by the character processing device of this embodiment when a character is input from the keyboard, and FIGS. 8 and 9 are explanatory views showing a storage state when a half-width character is input. , FIG. 10 is an explanatory view showing a state in which a half-width blank portion is added.

First, in step S7-1, a character is input from the keyboard. The key code obtained by this input has information on full width or half width as shown in FIG.

Next, it is determined whether the character input in step S7-2 is a full-width character or a half-width character. That is, this determination can be made by referring to the most significant bit MSB of the key code shown in FIG. If it is determined that the input characters are half-width characters, the process proceeds to step S7-3, and if it is determined that they are full-width characters, the process proceeds to step S7-7.

In step S7-3, the entered half-width character is also the cursor
Store in the position on the buffer DBUF corresponding to the position where CM exists. If the value of the cursor register CR is an even number, that is, if the cursor CM is at the left half position with respect to the full width character as shown in FIG. 8 (A) or FIG. 10 (A), As shown in FIG. 8 (B) or FIG. 10 (B), input the code of the half-width character “X” in the third to the ninth of the buffer DBUF.
It is stored in bits and the most significant bit MSB is set to 1. When the value of the cursor register CR is odd, that is, when the cursor CM is at the right half position with respect to the full width character as shown in FIG. 9 (A), as shown in FIG. 9 (B). To
Stores the code for the half-width character “X” that was entered in the 10th to 16th bits of the buffer.

In step S7-4, the value of cursor register CR is set to +
By moving one step, the cursor is moved to the position of the next character.

In step S7-5, in step S7-3 the buffer DBUF
It is determined whether the storage position of the half-width character stored above is an odd number, and if it is an odd number, step S7.
-6. On the other hand, if the number is an even number, the process ends. When making this determination, the value of the cursor register CR is referred to, but since the value of the cursor register CR is incremented by 1 in step S7-4, if the value of the cursor register CR is an odd number, the process proceeds to step S7-6. To do so.

In step S7-6, a half-width blank (space) SPC is added to the input half-width character. The half-width blank SPC is added by storing the code of the half-width blank SPC in the 10th to 16th bits of the buffer storing the input half-width character, as shown in FIG. 10 (C). That is, step S7-6
The process when one half-width character is input is completed.
If half-width characters are continuously input, step S7-6
Since the value of the cursor register CR points to the code position of the half-width blank SPC stored in, the half-width blank SP
The half-width character code entered in the C code will be overwritten.

If it is determined in step S7-2 that full-width characters have been input, it is determined in step S7-7 whether or not full-width characters have been input after an odd number of half-width characters have been input, and a positive determination is made. If so, the process proceeds to step S7-8, and if negative determination, the process proceeds to step S7-9. This determination is made by checking the value of the cursor register CR, which is an odd number, when the number of half-width characters continuously input is an odd number.

In step S7-8, the cursor is advanced to the next character position. This is because after an odd number of half-width characters has been input, the cursor CM is located on the right half position with respect to the full-width character, and when the full-width character is displayed from that position, the character alignment with the upper line or the lower line is displayed. This is because they are out of alignment. Furthermore, due to the structure of the buffer DBUF adopted in this embodiment, full-width characters cannot be stored from the right half position. cursor
The process of advancing the CM is performed by incrementing the value of the cursor register CR by one.

In step S7-9, buffer the input full-width characters.
Store in DBUF. Cursor CM is stored in the buffer DBUF.
The most significant bit MSB of the buffer at the position corresponding to is set to 0, and the input full-width character code is stored in the lower 14 bits.

In step S7-10, the cursor CM is advanced to the next character position. Since the input character is a full-width character, the value of the cursor register CR is incremented by +2 and the process ends.

In addition, in the above-described embodiment, the input is performed from the keyboard, but the input device is a tablet, an optical character reader (OCR), an online character recognition device, etc., in which the input characters can be obtained together with the character width information. However, any form can be used.

Further, in the embodiment, only the process related to the input is shown, but it goes without saying that this process can be easily applied to the editing of the document.

Further, in the embodiment, a half-width blank space following the half-width character is added, but this may be any form as long as it is a character that is not displayed or printed. In addition, the space was added each time an odd-numbered half-width character was entered.However, it is not added until a non-half-width character is entered, and a non-half-width character is entered, and the sequence is changed accordingly. You may make it add only when it shifts. In addition, a code that represents a space may be present in the internal data, or a code that represents a space may not be present in the internal data and may be added in a pseudo manner when displaying. May be.

[Effect] As is apparent from the above description, according to the present invention, even if a half-width character is input and displayed one by one like the full-width character, it is possible to confirm half-width characters when inputting. Even if half-width characters and full-width characters and double-width characters are mixed, the upper line or the lower line will not be misaligned with the characters, so it is possible to uniformly specify the range when editing. Like

[Brief description of drawings]

FIGS. 1 (A) and 1 (B) are line diagrams showing a display state and a printing state, respectively, when a character string is displaced due to a mixture of full-width characters and half-width characters in a conventional character processing device, 2 is an overall configuration diagram of character processing to which the present invention is applied, FIG. 3 is a block diagram showing one embodiment of the device of the present invention, FIG. 4 is a diagram showing one configuration example 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 view for explaining the outline of the display processing by the apparatus of this embodiment, and FIG. 7 shows an example of the display processing procedure. Flowcharts, FIGS. 8 and 9 are explanatory views for explaining the storing process when half-width characters are input, and FIG. 10 is an explanatory diagram for explaining the correction process when half-width characters are input. 1 ... Input means, 2 ... Correction means, 3 ... Storage means, CPU ... Central processing unit, KB ... Keyboard, DBUF ... Buffer memory, ROM ... Read only memory, CRT ... Display device, CR ... Cursor register.

Claims (1)

[Claims] 1. Input means for inputting full-width characters and half-width characters, designating means for designating the display position of the input characters in units of half-width characters, and said designating unit corresponding to full-width characters. In the case where the position of the latter half portion of is designated, when half-width characters are instructed from the input means, the half-width character input by the instruction is displayed at the designated rear half position, and the input is performed. And a display control means for displaying the full-width character input position by the instruction by shifting the display position of the full-width character by a half width backward from the designated latter half position. A character processing device characterized by the above.