JPH0143338B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a character processing device that processes documents.

[Prior art] Conventionally, for example, Japanese Patent Application Laid-open No. 19618/1983,
In Japanese Patent Publication No. 55-9743, various techniques have been proposed in which an arbitrary area is provided on a display screen and a cursor is moved within the area, and editing such as line deletion within the area is performed.

However, no technology has been proposed that allows the area information itself to be visually displayed together with text information, and the technology that allows text data to be input and displayed within a desired area, as well as the ability to change the display form of area data. There was a drawback.

[Objective] In view of the above points, an object of the present invention is to make it possible to visually display area information, input and display character data in a desired area, and change the display form of area data. The object of the present invention is to provide a character processing device that can perform the following functions.

[Example] Before describing an example according to the present invention, terms used in this example will first be explained.

1 Indent code Ind Displayed as a '◇' mark on the CRT. When entering characters etc. from the keyboard, a framework is created in advance using this indentation code.

2 Left margin code LMM Displayed as a '' mark on the CRT. Displays the leftmost possible input from the keyboard.

3 Right margin code RMM Displays the rightmost edge that can be entered from the keyboard, which is displayed as a '〓' mark on the CRT.

4 Indent Block Inb Refers to the area framed by indent marks, left margin marks, right margin marks, etc. Correctly, it is defined as follows.

Horizontal direction: The smallest area surrounded by indent marks, left margin marks, right margin marks, etc. Vertical direction: The range where the margin and indent settings are the same. However, for indent blocks defined only by the left and right margins, the range is defined as a continuous line in which characters are written. (However, if a cursor exists, it is considered to be equivalent to writing characters.) Figure 2 a, b, and c show indent blocks displayed on a CRT.

Characters entered from the keyboard are processed within this indentation block Inb.
This indentation block Inb plays an important role in creating formatted texts such as tables.

In this embodiment, in order to perform various processing of indent block Inb after the position of the cursor CM displayed on the CRT,
In the indent block Inb defined above, the line after the cursor CM is sometimes expressed as an indent block Inb.

5 Frame code Indent code Ind, left margin code
A general term for three types of codes: LMM and right margin code RMM. These codes are mapped to the framework patterns, 〓, ◇. (See Figure 3a) 6 Ruled line code Coded line pattern as graphic characters. As shown in FIG. 3a, 11 types of ruled line patterns are associated with ruled line codes.

Next, an overview of one embodiment of the present invention will be explained.

The device shown in the embodiment includes a keyboard, a processing section display device, and a printer.

All operations are performed using letter keys or function keys on the keyboard.

First, all states are initialized by the initialize key, and each function of this embodiment becomes executable.

By pressing the initialize key, left and right margin marks LMM and RMM are displayed on the display device, and all others are cleared. cursor
CM is located in the second column of the top row, and allows input of characters, etc. from the keyboard. The input mode, insert or overwrite, is selected by using the insert key or the overwrite key. Characters entered from the keyboard are
In insert mode or overwrite mode, an input is made at the position where the cursor CM is displayed on the display device. The cursor CM advances one by one in accordance with the input of characters, etc. from the keyboard.
If an incorrect entry is made, it can be deleted using the delete key, in which case the following string will be moved forward one by one. The cursor is the character you want to delete.
Specify in CM. The cursor CM can be advanced one by one using the cursor keys. The inputted character string can be output to the printer by pressing the print key. The input/output control described above can be easily realized using known techniques.

The operating methods for the functions of the present invention will be described below.

First, a method for forming the indent block Inb will be described. Indent block Inb is an indent mark on the display device using the indent key.
Can be shaped by overwriting or inserting Ind. Once the indent block is created, all information such as characters input from the keyboard will be processed within this indent block Inb. This makes it easier to create formatted texts such as tables. Also, this indent block
Inb can be freely expanded and contracted horizontally. This situation will be explained using FIGS. 4a, b, and c.

Assume that a plurality of characters have already been input in the indent block as shown in FIG. 4a. If you use the cursor keys to move the cursor CM to the position of the 8th column of the 1st line, which is already 'B', and then press the indent right movement key, the indent block where the cursor CM was located will be moved horizontally. reduced,
It is enlarged in the vertical direction by that amount, and becomes as shown in FIG. 4b. Next, as shown in Figure 4b, place the cursor CM at the position of the indent mark Ind and press the indent right movement key.The second indent block Inb counted to the left of the cursor CM position will be enlarged, as shown in Figure 4c. It becomes like this.

That is, if the indent right key is pressed once in FIG. 4a, the result will be as shown in FIG. 4b, and if the indent right key is pressed twice in FIG. 4a, the result will be as shown in FIG. 4c.

When the indent left movement key is used to move the indent mark Ind, an operation similar to that described above is performed.

Next, inputting characters, etc. into the indent block Inb will be explained using FIGS. 5a, b, and c. As shown in Figure 5a, the indent block
Suppose that a character etc. is input into Inb and the cursor CM is positioned at the end of the indent block Inb.
If the character 'L' is input in the overwrite mode in Fig. 5a, the result will be as shown in Fig. 5b.
That is, the indent block is automatically expanded in the vertical direction (arrow A) to prepare a storage area for the next input character, etc. Further in Figure 5b
If you continue to input MNOP', the same expansion will continue as shown in Figure 5c.

In FIG. 5b, if an attempt is made to further enlarge the indent block, the downwardly adjacent indent block Inb must be shifted downward one line at a time. An example is shown in FIG. 5c.

Next, a method for deleting characters within an indent block will be explained. Assume that a character is input into the indent block Inb as shown in FIG. 6a, and the cursor CM is positioned below 'W'. By pressing the delete key, the following characters are moved forward one by one. As a result, the line where the character 'Y' used to exist now becomes a line consisting only of a space code, left margin code, right margin code, and indent code. In this embodiment, the line L is automatically deleted, and all subsequent lines are set to 1.
shall be incremented line by line.

Next, we will discuss how to delete the indent mark Ind.

One method is to use the delete key, and the indent mark is replaced with a space code.

Next, the function of switching between indent marks and ruled line patterns will be explained. Assume that an indent block Inb is now formed as shown in FIG. 3b. If you press the indent ruled line conversion key here, the third
It is converted as shown in Figure c. If the ruled line indent conversion key is pressed in FIG. 3c, the line will be converted as shown in FIG. 3b. Indent mark like this
Mutual conversion between Ind and ruled line pattern RPM becomes possible. By using this function, it is possible to extremely easily create a text having the ruled line pattern KPM by inputting the text into the area framed by the indent mark Ind and then changing it to the ruled line pattern. This is very convenient for tabulation.

FIG. 3d specifically shows a correspondence table when changing an indentation pattern to a ruled line pattern. In this embodiment, when performing functions such as inputting characters, moving and deleting indentation, and inputting the carriage return key, the cursor is positioned to the right of the line where the carriage return code exists in indent block units. shall not be allowed to do so.

The document that has been input and edited above is output to the printer by pressing the print key.

FIG. 1 is a block diagram showing an embodiment of a character processing device according to the present invention. Each component will be explained below. The KB is a keyboard consisting of text input keys (for example, keys arranged on a JIS keyboard) and function keys for realizing various functions of this device. The above function keys include the following function keys: an indent key for setting an indent, an indent right movement key for moving an indent to the right, an indent left movement key for moving an indent to the left, Insert the character you are about to enter,
Insert key, Delete key, Overwrite key for instructing deletion and overwriting, Cursor key for moving the cursor on CRT, Initialize key for instructing start of work, Carriage return key for instructing line feed , an indent and ruled line conversion key that converts an indent mark to a ruled line mark, a ruled line indent conversion key that converts a ruled line mark to an indented mark, and a print key that instructs printing. The keyboard KB has an encoder function, and the information of the pressed keys is read by the processing unit CPU, which will be described later.

CR is the cursor register. The processing unit CPU, which will be described later, can read and write the contents of the cursor register CR. The CRT controller CRTC, which will be described later, has a function of displaying a cursor at a position on the display device CRT corresponding to the address stored here. The information stored in the cursor register CR is a serial number from 1 to 128, and the CRT controller CRTC changes this serial number to the number of lines and digits and displays them.

WB is work buffer, indent block
This is a buffer for temporarily storing information in Inb, and a 7W parameter is placed in the header of the buffer. The capacity is 16×9W+α. It can be read and written freely by the processing unit CPU described later.

DBuF is a data buffer, which is a memory for storing text information input from the keyboard KB, and the information stored here is displayed on the display device CRT by the CRT controller CRTC, which will be described later. Used as refresh memory for CRT display devices. It can be read and written freely by the CPU. Data buffer DBuF is 16×
It has a capacity of 9W, of which only the first half of 16×8W is displayed on the display device CRT.

CRTC is a data buffer using a CRT controller.
Control is performed to display characters, etc. on the display device CRT according to the information stored in the DBuF, and to display a cursor on the display device CRT according to the information stored in the cursor register CR.

The display of characters, etc. is 16 characters horizontally and 8 lines vertically.
It is assumed that they are correlated in order with the contents of the data buffer DBuF.

When displaying characters, etc., character codes are changed into character patterns with reference to a character generator CG, which will be described later. Specific methods are publicly known.

CRT is a display device, CRT controller
Characters and cursor can be displayed by CRTC.

CG is a character generator and is used to display characters on a display device CRT and output characters to a printer PRT. CRT controller
CRTC and printer controller (described later)
Used by PRTC.

PRTC is a printer controller, converts character code information from a processing unit CPU (described later) into a pattern by referring to a character generator CG, and outputs the pattern to the printer PRT.

The printer controller PRTC converts the ruled line code into a ruled line pattern and outputs it. It is even more desirable to have a function of filling the line spacing and character spacing with continuous straight lines when outputting a pattern.

PRT is a printer that prints out characters, etc. according to information from the printer controller PRTC.

The CPU is a microprocessor that performs calculations, logical judgments, etc. This will be explained later. Control AB, CB, DB.

AB transfers signals indicating the control target using the address bus.

CB is a control bus that applies control signals to various control targets.

DB transfers various data using a data bus.

The ROM is a control memory that stores control procedures and the like shown in FIG. 7 and subsequent figures.

RAM is a random access memory that stores various data such as the carriage return flag CRFG,
Overwrite flag OWFG, new data line count register NDL cursor save register CSR Used for temporary storage.

Next, the operation of this embodiment will be explained.

This embodiment assumes that the keyboard processing is configured to operate automatically when the power is turned on. Each process will be specifically explained below with reference to the flowcharts from FIG. 8 onwards.

First, when a key on the keyboard KB is operated, the operating key is determined according to the following order, processing is performed for each key, and the system enters a key wait state.

In step KB1, determine whether there is an input from the keyboard KB. If there is no input, the process returns to waiting for a key, and if there is input, the program moves to step KB2 and takes in the data from the keyboard KB. Step KB3
Then, it is determined whether the imported data is a carriage return key. If YES, perform carriage return input processing, set flag CRFG to 1 at step KB5, and return to key wait. On the other hand, if step KB3 is NO, step
Use KB6 to reset the flag CRFG to 0 and move on to the next key determination step. Here, the carriage return key input process in step KB4 will be further described.

FIG. 8 is a diagram showing details of the carriage return key input process. By performing such processing, that is, by continuously operating the carriage return key in this embodiment, the framework can be expanded. The processing of each step of such processing is shown below.

Step 4.1 Is CRFG set? Step 4.2 Is the current cursor position immediately to the right of the indent mark? Step 4.3 Change the indent mark immediately to the left of the current cursor position to a space code.

Step 4.4 Write the corresponding number in the cursor register to move the cursor to the position immediately to the right of the nearest indent mark or left margin mark to the left of the current cursor position.

Step 4.5 Character Key Input Processing 16 As described above, in the present invention, the framework is changed using the carriage return key, but other keys may have this function.

Now, we will turn to the explanation of the keyboard processing shown in FIG. 7 again.

After the flag CRFG is reset in step KB6, the process moves to step KB7, where it is determined whether the indent key has been operated. If YES, perform indent key input processing in step KB8. That is, an indent mark is written at the position where the current cursor is. When this processing is completed, the process returns to waiting for a key. If NO in step KB7, the process moves to step KB9, and it is determined whether the overwrite key has been operated. If there is a key operation, the step
Set the overwrite flag OWFG to 1 in KB10 and return to waiting for the key. If NO, the process moves to step KB11 and it is determined whether the insert key has been operated.

If YES, insert key input processing is performed.
That is, reset the overwrite flag OWF,
Waiting for the key.

If NO, the process moves to step KB13, and it is determined whether the cursor key has been operated. If YES, the process moves to step KB14 and the cursor is sequentially advanced on the CRT screen. When the cursor reaches the last column of the last line, return it to the upper left position. Such processing is performed in the following steps.

14.1 Cursor register CR increment 14.2 Does the value of cursor register CR exceed 128? 14.3 Set the value of cursor register CR to 1 When this process is completed, the program returns to waiting for a key. if
If NO, move to step KB15. Determine whether a character key has been operated in such a step,
If YES, the process moves to step KB16 and the following control is performed.

16.1 Are there indent marks and left and right margin marks at the current cursor position? 16.2 Indent block SAVE processing 16.3 Overwrite mode? (See overwrite flag) 16.4 Overwrite processing 16.5 Insertion processing 16.6 Indent block RESTORE processing Each of the above steps performs the following contents.

16.1 Character key input processing is valid only when the cursor is within the indent block.
That is, when the cursor is located at the position of the indent mark and left and right margin marks, this process is not performed.

16.2 All input processing is performed within the work buffer WB, so all information in the indent block where the cursor is located is moved to the work buffer WB. (However, all processing must be done after the line where the cursor is. Also, in this case, the work buffer WB
Set various parameters in the HEADER section.

16.3 to 16.4 If it is in overwrite mode, perform overwrite processing in the work buffer WB.

16.5 Work buffer WB if in insert mode
Perform the insertion process within.

16.6 Work buffer that has finished character input processing
Returns the information in the WB to the original indentation block.

The above processing will be further explained.

FIG. 13b is an example of character overwriting. Let the diagram shown in 16.0 be the initial state in the data buffer DBuF. Here, due to space constraints, a data buffer DBuF of 8 horizontal columns and 4 vertical lines is shown displayed on the display device CRT. The steps in 16.2 were executed on the data buffer shown in 16.2.
This is a picture of DBuF and Work Buffer WB. The data in the data buffer DBuF is stored in the work buffer
It has been moved to WB. Next, the overwrite process in step 16.4 is performed in the work buffer WB. 16.2 and
The difference in the work buffer WB shown in 16.3 is the letter C.
The addition of the letter D after the work
The first W (DATA LENGTH) of the WB has been incremented, and the fourth W (cursor address) of the work buffer WB has been incremented. In step 16.4, it is determined whether all of the information stored in the work buffer WB can be returned to the corresponding indent block without any omissions. in this case
The capacity of the indent block shown in 16.0 is
2character and the amount of information stored in the work buffer WB is due to the movement of the cursor.
It has been increased to 3character. Therefore, the indent block is expanded vertically and the work buffer WB
16.4 was able to store all the information in
The data buffer DBuF is shown in . In step 16.6, all information of the work buffer WB after overwriting processing is returned to the expanded indent block. The diagram shown in 16.6 shows this situation.

In the above process, the indent block save process in step 16.2 will be further explained using FIG. 14a. Such steps do the following:

16.2.1 Fill all data storage areas of the work buffer WB with space codes.

16.2.2 Move the contents of the data buffer DBuF after the line where the cursor exists in the indented block where the cursor exists to the work buffer WB. (However, the space code following the carriage return code is excluded.) 16.2.3 Fill all of the indented blocks with space codes.

16.2.4 Enter the following parameters in the HEADER section of the work buffer WB.

1 Length of data written to the work buffer WB.

However, it must be included up to the position where the cursor is located.

2 Width of the indent 3 Width of the indent (number of lines in the indent block) 4 Address in the work buffer corresponding to the cursor register 5 Column number on the data buffer DB at the beginning of the indent block 6 Column number at the beginning of the indent block Line number on the data buffer DB 7 Number of data lines (excluding the number of consecutive space lines at the end from the width) Each of the above steps has the following purpose.

16.2.1 Initialize the work buffer WB with a space code.

16.2.2 Move the information in the indent block to the work buffer WB.

16.2.3 Fill all indented blocks with space codes after the transfer is complete.

16.2.4 Write down all the characteristics of the indent block in the HEADER section of the work buffer WB. The parameters of this HEADER section are changed at the same time when the contents of the work buffer WB are changed in various processes.
This is useful when returning the contents of WB to the data buffer DBuF.

FIG. 14b shows an example of this process. The parameters to be saved in the work buffer in 16.2.4 are as follows.

1st W data length Length of data written to the work buffer.
The space code following the carriage return code is excluded. Also exclude the space code following the end of the indented block. Furthermore, even if a space code exists at the position where the cursor is located, it is assumed that a code other than the space code exists there.

2nd W Width Width of the indented block 3rd W Height 4th W of the vertical width of the indented block Cursor The data indicated by the current cursor is in the work buffer.
Indicates the location stored in WB. The minimum value is 1, and the maximum value is the same as the 1st W.

5th W First digit of the indent block.

Defines the position on the data buffer DBuF where the indented block exists. Indicates the position of the first character of the indented block in the data buffer DBuF.

6th W First line of the indented block Defines the position on the data buffer DBuF where the indented block exists. Indicates in which line of the data buffer DBuF the first character of the indented block exists.

7th W data line Width within the indented block, excluding the last consecutive space line. However, even if a space code exists at the position where the cursor is located, the position is considered to be equivalent to the presence of a character code. The minimum value is 1 and the maximum value is the same value as the 3rd W.

The control procedure for the overwrite process in step 16.4 is shown below.

16.4.1 Overwrite the DATA to be overwritten at the DATA position in the work buffer WB indicated by the 4th W (cursor) of the work buffer WB,
Update the value of the 4th W (cursor) of the work buffer WB.

16.4.2 The value of the work buffer WB 4th W (cursor) is the value of the work buffer WB 1st W (DATA
Is it larger than LENGTH? 16.4.3 Work buffer WB 1st W (DATA
4th W of work buffer WB
Replace with the value of (cursor).

Each of the above steps will be further explained.

16.4.1 Write data to the corresponding position in the work buffer WB. Also, in order to advance the cursor, the value of the 4th W of the work buffer WB is updated.

16.4.2 to 16.4.3 If the cursor position is larger than the data length of the 1st W of the work buffer WB, the cursor value, that is, the work buffer WB
Transfer the value of the 4th W to the 1st W of the work buffer WB. That is, the data length is determined by including the space at the cursor position in the data.

Step 16.5 above will be further explained.

This step is the 4th W of work buffer WB.
Insert the data to be inserted into the data position in the work buffer WB indicated by (cursor), and update (+1) the values of the 1st W (DATA LENGTH) and 4th W (cursor) of the work buffer.

Through these steps, the insertion process is performed in the work buffer WB, and the first W of the work buffer WB is
Increment the values of (DATA LENGTH) and the 4th W (cursor).

Next, the indent block restoring process 16.6 shown in FIG. 13a will be further explained. FIG. 17 is a diagram showing this.

16.6.1 When the width is set as the value of the 2nd W of the work buffer WB, find the number of rows required to store the amount of DATA specified in the 1st W of the work buffer WB, and use it as the new number of DATA rows. . If there is a CR code in the middle, you must consider the increase in the number of lines due to line breaks.

16.6.2 New DATA line count is work buffer WB 3rd W
Is it larger than (width)? 16.6.3 Indent block expansion processing 16.6.4 New data in new data line number register NDR
Is the number of rows smaller than the 7th W (number of DATA rows) of the work buffer WB? 16.6.5 Indent block reduction processing 16.6.6 Data buffer DBuF writing processing The above steps 16.6.1 to 16.6.6 will be further explained.

16.6.1 Refer to the HEADER section of the work buffer to find the number of rows required to store the data in the work buffer WB to the data buffer DBuF.

When calculating the number of lines, use the work buffer
Refers to the indent block width value stored in the second W of WB.

Also, if a carriage return CR code exists, consider the increase in the number of lines due to line breaks.

16.6.2 - 16.6.3 Compare the calculated number of lines with the original vertical width of the indent block, and if the number of lines exceeds the vertical width, expand the indent block vertically to secure the data area. do.

16.6.4~16.6.5 The number of rows found and the number of rows in the original data (not the original width of the indented block,
If the number of rows is less than the original number of data rows, the indent block is reduced vertically by that amount. conduct.

16.6.6 Move the contents of the work buffer to the newly created indented block. At this time, this is done by referring to the parameters of the HEADER section of the work buffer.

The indent block enlargement process in step 16.6.3 above will be further explained with reference to FIG. 18a.

16.6.3.1 Row insertion processing 16.6.3.2 SPACE row movement processing 16.6.3.3 [Number of new DATA rows - Work buffer 3rd W
Did you repeat it for the size of (width)? Performs step control. The purpose of each step is shown below.

16.6.3.1 Performing a so-called row insert on the row where the cursor is located. Row DATA inserted at this time
Of course, there are left margin marks and right margin marks, but it is assumed that the indent mark is set exactly the same as the line one line above. Others are assumed to contain space codes.16.6.3.2 As a result of inserting a line, the string of characters that had been continuous until now is cut off, and the connection as a sentence can no longer be maintained. Therefore, the data after the inserted line is created line by line in indented units.

16.6.3.3 Repeat steps 16.6.3.1 and 16.6.3.2 for as many lines as you want to expand the indentation block.

The data arrangement resulting from the above processing is shown in Figure 18b.
Shown below.

FIG. 18b is an example of indent block enlargement processing. The figure shown in 16.6.3.1 shows how a line is inserted, and the figure shown in 16.6.3.2 shows how a space line inserted in an indent unit is shifted down. As you can see in the diagram in 16.6.3.2, the result is that the space lines are placed at different positions for each indentation, and are not grouped together on a single line. As a result, the indent blocks are expanded in a manner that maintains the continuity of the text in each indent block unit.

The row insertion process in step 16.6.3.1 described above will be further explained using FIG. 19a. This process consists of the following steps.

16.6.3.1.1 Move all lines after the cursor in the data buffer by one line and fill the newly generated line with a space code.

16.6.3.1.1 Copy the left margin code, indentation code, and right margin code of the previous line to the newly generated line in the same position.

The above steps insert a line consisting only of space codes at the position indicated by the current cursor, and then write the left margin mark, right margin mark, and indent mark at exactly the same positions as the previous line.

The space line movement process in step 16.6.3.2 above will be further explained. In this process, each step shown in FIG. 20a is performed.

16.6.3.2.1 Insert the leftmost indent block on the line where the cursor is.

16.6.3.2.2 Were there any indentation blocks?

16.6.3.2.3 Move the cursor to the beginning of the indented block 16.6.3.2.4 Are all the lines where the cursor is located in the indented block a space code? 16.6.3.2.4 Delete the line where the cursor is in the indented block and move all lines up one line. Executes to the end of the indented block and fills the bottom with a space code.

16.6.3.2.5 Insert next indent block to the right.

By executing the above steps, for example, steps 16.6.3.2.1, 16.6.3.2.2, and 16.6.3.2.6 will execute the process for each indented block sequentially from the left, and all indented blocks will be processed. Continue until finished.

Steps 16.6.3.2.3 to 16.6.3.2.5 move the space line in each indent block to the bottom line of each indent block. Since this process is executed for each indent block, the position of the SPACE line moved to the bottom line differs for each indent block.

The details of the indent block reduction process in step 16.6.5 described above are shown in FIG. These steps will be explained.

16.6.5.1 Is there anything other than a left margin mark, right margin mark, space code, or indent code on the last line of the indent block? 16.6.5.2 Delete the last line of the indented block and move all subsequent DATA forward by one line. (Not in indent block units) 16.6.5.3 Fill in all space codes in the positions corresponding to the last line of the data buffer DBuF 16.6.5.4 Fill in the left margin code and right margin code in the last line of the data buffer.

16.6.5.5 [Work buffer 7th W (Number of DATA lines) -
Did you repeat it for the size of [New DATA row count]? Perform steps 16.6.5.1-16.6.5.5 above to accomplish the following purposes:

16.6.5.1 In the last line of the indented block, all including the adjacent indented blocks, the left margin code, right margin code,
Checks whether anything other than indent marks and space codes exists. If it does not exist, proceed to the next step.

16.6.5.2 Delete the line checked in 16.6.5.1 and move the following line up.

(It shall be executed including the left and right margins, not in indent block units.) 16.6.5.3 to 16.6.5.4 Fill in the data buffer position, left and right margin codes, and space codes corresponding to the last line.

16.6.5.5 Repeat the reduction as many times as necessary.

The data buffer write process in step 16.6.6 described above will be explained with reference to FIG.

16.6.6.1 Move DATA in the work buffer to the data buffer according to the HEADER section parameters of the work buffer WB. (However, if there is a CR code in the middle, a line break will be performed.) Anything that exceeds the indentation block will be discarded.

16.6.6.2 Write the address in the DATA BUFFER corresponding to the 4th W (cursor) of the work buffer to the cursor register. (The value is 128
(If it exceeds, set it to 1) Execute steps 16.6.6.1 to 16.6.6.2 above and do the following.

16.6.6.1 Move the contents of the work buffer to the data buffer.

The length of the data to be transferred is in the 1st W. The width of the indent block to be transferred is in the 2nd W.
The position of the indent block to be moved in the data buffer DBuF is shown in the 5th and 6th Ws. No.
5W is the digit number and 6th W is the line number, and the first character of the indent block will be at this position.

16.6.6.2 Writing the cursor address to the cursor register The address where the cursor should exist is written in the 4th W of the work buffer WB. Convert this value to an address on the actual data buffer and write it to the cursor register CR.

When the above processing is completed, the steps shown in Fig. 7 are executed.
KB16 character processing ends and returns to waiting for keys. If NO, the process moves to step KB17, where it is determined whether the delete key has been operated. If YES, the delete key input processing control shown in FIG. 23a is performed. The contents of each step are as follows.

18.1 Is there an indent mark at the current cursor position? 18.2 Change the contents of the inner address corresponding to the current cursor position to a space code.

18.3 Indent block save processing (16.2) 18.4 Delete processing 18.5 Indent block restore processing (16.6) <Note> This processing does not work when the cursor is on the left and right margins.

The steps described above will do the following:

18.1 If the cursor is on the indent mark, proceed to step 18.2. If the cursor is not on the indent mark, proceed to step 18.3.

18.2 Change the code at the cursor position to a space code.

18.3 Save the indented block to the work buffer (16.2) 18.4 Perform deletion processing on the work buffer.

18.5 Return the contents of the deleted work buffer WB to the data buffer DBuF.

FIG. 23b is an example of the above-mentioned deletion key input process. Processing step numbers are assigned corresponding to each process. The indent block save process in 18.3 and the indent block restore process in 18.5 were described in steps 16.2 and 16.6, respectively. 18.4
is the deletion process on the work buffer WB.

This deletion process consists of three steps as shown in FIG. 24, and each step is described below.

18.4.1 Delete the DATA indicated by the 4th W (cursor) of the work buffer WB. (In other words, move all DATA existing after the specified position forward one by one.

18.4.2 Are the values of work buffer WB 4th W (cursor) and 1st W (DATA LENGTH) equal? 18.4.3 Work buffer WB 1st W (DATA
LENGTH) is reduced by 1.

The steps described above perform the following:

18.4.1 Delete the data in the work buffer WB indicated by the 4th W of the work buffer WB and move all subsequent data to the front.

18.4.2 - 18.4.3 The cursor position shall not be moved during deletion processing. Therefore, the value of work buffer WB 1st W (DATA LENGTH) is
The value shall be decreased by 1 as long as it does not become smaller than the value of the 4th W (cursor) of the work buffer.

Once the above process is completed, the process moves to waiting for a key.
If NO, move to step KB19. step
Determine if it is an indent right movement key in KB19. If YES, the indent right movement key input process whose details of Y are shown in FIG. 25a is performed.

20.1 Save the current cursor position.

20.2 Is the current cursor at the indentation code? 20.3 Indent block save processing (16.2) 20.4 Indent block horizontal reduction processing 20.5 Is there another indent code further to the left of the current cursor? 20.6 Are the heights of the first indent block immediately to the left of the current cursor equal to the height of the second indent block further to the left? (However, the line after the cursor is compared is compared.) 20.7 Move the current cursor to the leftmost edge of the second indent block.

20.8 Indent block save processing (16.2) 20.9 Indent block horizontal expansion processing 20.10 Indent block restore processing (16.6) 20.11 Return the current cursor position to the saved cursor position.

<Note> Indent key left movement key input process 22
is the same as the above explanation with all left and right reversed.

<Note> This process assumes that the cursor is not on the left and right margins.

The purpose of each step described above is as follows.

20.1 Save the current cursor position in the cursor position save register 20.2 When the cursor is on a character, step 20.3
When the cursor is on the indent, step
Proceed to 20.5.

20.3 SAVE an indent block (16.2) 20.4 Reduce the indent block on the work buffer. Proceed to step 20.10 20.5, 20.6 If there are two indent blocks to the left of the cursor position and the vertical widths of the two indent blocks are equal, proceed to step 20.7 20.7 Move the cursor to the first character.

20.8 Indent block save processing (16.2) 20.9 Extend indent block in the work buffer.

20.10 Indent block restoration processing (16.6) 20, 11 Return the cursor position address saved in the cursor position save register CSR to the cursor register CR.

FIG. 25b is an example when the cursor is placed on a character. In this case, the indent block is shrunk horizontally using the indent right movement key.
The figure shown in 20.4 is an example of reducing an indent block using the work buffer WB.

FIG. 25c is an example when the cursor is on the indent. In this case, the indent block is expanded horizontally by the indent right movement key.
The figure shown in 20.9 is an example of indent block enlargement processing using the work buffer WB.

To further explain step 20.4 above, the second
As shown in Figure 6, it consists of 5 steps.

20.4.1 The indent block where the current cursor is located is vertically divided into two equal parts by writing an indent code vertically at the position where the current cursor is located.

20.4.2 Shift the current cursor position one position to the right.

20.4.3 Write the width of the newly created indent block where the current cursor is located in the 2nd W (width) of the work buffer WB.

20.4.4 Change the value of the work buffer WB 4th W (cursor) to 1.

20.4.5 Change work buffer WB 5th W (first digit of indent block) to the first digit number of the newly created indent block. <Note> When moving the indent to the left, change the right in the above description to the left in 22.4.

Each of the above steps will be further explained.

20.4.1 First, create a reduced indent block by dividing the indent block in the data buffer into two equal parts. The information that has been there so far will be pushed into the right side of the indented block, which is divided into two equal parts in the vertical direction.

20.4.2 Move the current cursor one position to the right. That position becomes the position of the first character of the new indent block.

20.4.3~20.4.5 Work buffer WB HEADER
Replace the parameters of the section with the parameters of the new indentation block.

The indent block horizontal enlargement process in step 20.9 described above will be explained with reference to FIG.

20.9.1 Change all indent marks that define the right edge of the indent block where the cursor is located to space marks.

20.9.2 Write the width of the newly enlarged indent block in the work buffer WB 2nd W (width).

The steps are as follows:

20.9.1 First, expand the indent block of the data buffer by removing the indent mark at the right end of the indent block.

20.9.2 Change the value of work buffer WB 2nd W (width).

When the above processing is completed, the process moves to wait for a key. If NO, the process moves to step KB21 to determine whether it is an indent left key. in this step
If YES, the process moves to step KB22 for input processing.

This process is equivalent to exchanging the right and left in the figure explanatory text and replacing the number 20 with 22 in FIG. 25a.

Also, the indent block horizontal reduction process is 26th in width.
In the figure, swap the right and left in the figure legend,
And it is equivalent to replacing the number 20 with 22.

Furthermore, we will discuss horizontal indentation block expansion processing.

This process consists of the steps shown in FIG. 28, and these steps will be explained.

22.9.1 Change all indent marks that define the left edge of the indent block where the cursor is located to space marks.

22.9.2 Enter the width of the newly enlarged indent block in the work buffer WB 2nd W (width).

22.9.3 Change the work buffer WB 5th W (first digit of the indent block) to the first digit of the newly enlarged indent block.

Each of the above steps accomplishes the following objectives:

22.9.1 First, expand the indent block by removing the indent mark at the left end of the indent block in the data buffer.

22.9.2, 22.9.3 Work buffer WB 2nd W (width),
Change the work buffer WB 5th W (first digit) to the value corresponding to the new indent block.

Once the above process is completed, the process moves to waiting for a key.
If NO, move to step KB23. step
KB23 is a step to determine if it is an indent ruled line conversion key. If the answer is YES in step KB23, the process moves to step 24, which is indent ruled line conversion key input processing. FIG. 29a is a flow showing the details. The contents of each step are shown below.

24.1 Move all contents of the data buffer to the work buffer up to the line before the current cursor.

24.2 Move the contents of the data buffer from the line where the current cursor is located to the work buffer WB while referring to the conversion table (d) in Figure 3 and converting the indentation code to the ruled line code. At this time, the conversion table is referred to as if the line immediately before the cursor does not exist.

24.3 Return all contents of the work buffer to the data buffer.

The purpose of each step is shown below.

24.1 Here we will use a work buffer format that is completely different from the one we have defined so far.
That is, the concept of an indent block is not treated here at all, and therefore an indent mark is considered to be completely equivalent to a simple character.

First, all information up to the line before the line where the cursor is located is stored from the beginning of the work buffer WB.

24.2 Next, the remaining information in the data buffer is successively stored in the work buffer while converting the indent code into a ruled line code while referring to the conversion table shown in FIG. 3(d). At this time, the conversion table is referred to as if the row before the current cursor does not exist.

When referring to the conversion table, the converted ruled line code changes depending on whether or not there is an indent code above, below, left, or right of the indent code, so it is necessary to always recognize the top, bottom, left, and right states. .

24.3 Return all contents of the work buffer WB to the data buffer starting from the beginning.

FIG. 29b is an example of indent ruled line conversion.

When the above processing is completed, the process returns to waiting for a key.
If NO, move to step KB25. In step KB25, it is determined whether the ruled line indent conversion key has been operated. If YES, the process moves to step KB26 and the process shown in FIG. 30 is performed.

26.1 Change all border codes after the line where the current cursor is located to indent codes.

By the above steps, all lines after the current cursor in the data buffer are changed from ruled line code to indent code.

When the above-mentioned processing is completed, the system waits for a key. If NO, move to step KB27. In step KB27, it is determined whether the initialize key has been operated. If YES, initialize processing is performed. FIG. 30 shows the flow.

1 Fill in all space codes in the data buffer.

2 Fill in the left margin code and right margin code in the locations corresponding to the left and right margin positions of the data buffer.

By setting initial values in the data buffer using the steps described above, the character string displayed on the CRT is initialized. This causes the left and right margins to be displayed on the CRT and all remaining spaces to be displayed. All input can be started by first pressing this INT key.

When the above-mentioned processing is completed, the system waits for a key. If NO, move to step KB29. Step KB29 determines whether the print key has been operated. If YES, the process moves to step KB30 of print key processing shown in FIG. This step performs the following processing.

Output the contents of the data buffer to the printer.

The above processing prints out all the contents of the data buffer. It is even more desirable to have the function of vertical and horizontal printing.

When the above process is completed, it will wait for the key, but if
If NO, the process returns to waiting for the key.

[Effects] As detailed above, according to the present invention, area information can be displayed visually, character data can be input and displayed in a desired area, and furthermore, the display form of area data can be changed. It has become possible to provide a character processing device that can.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing one embodiment of the present invention, Fig. 2 a, b, and c are diagrams explaining an indent block, and Fig. 3 a, b, c, and d are diagrams explaining the conversion of indent marks and ruled line patterns. Figures 4a, b, and c are diagrams explaining changes in the framework. Figures 5a, b, and c are diagrams explaining changes in the framework. Figures 6a and b are diagrams explaining changes in the framework. 7 is a diagram showing the control procedure for key processing, FIG. 8 is a diagram showing carriage return processing, FIG. 9 is a diagram showing indent input processing, and FIG. 10 is a diagram showing overwrite key input processing. 11 is a diagram showing insert key input processing, FIG. 12 is a diagram showing cursor key input processing, FIG. 13a is a diagram showing character key input processing, and FIG. 13b is a diagram showing character overwrite processing. Figure 14a is a diagram showing the indent block save process, Figure 14b is a diagram showing the data flow, and Figure 15 is a diagram showing the data flow.
The figures show overwrite processing, Fig. 16 shows insertion processing, Fig. 17 shows indent block restore processing, Fig. 18a shows indent block enlargement processing, and Fig. 18b shows data. Figure 19a is a diagram showing the row insertion process; Figure 19b is a diagram showing the data flow;
Figure 20a is a diagram showing space line movement processing, Figure 20b is a diagram showing data flow, Figure 21 is a diagram showing indent block reduction processing, Figure 22a is a diagram showing data buffer writing processing, Figure 22 Figure b is a diagram showing the data flow, Figure 23a is a diagram showing the deletion key input process, Figure 23b is a diagram showing the data flow for character deletion, Figure 24 is a diagram showing the deletion process, FIG. 25a is a diagram showing the indent right movement key input process, FIG. 25b is a diagram showing the data flow,
Figure 25c is a diagram showing the flow of data, Figure 26 is a diagram showing indent block horizontal reduction processing, and Figure 27 is a diagram showing the flow of data.
Figure 28 shows indent block horizontal enlargement processing, Figure 28 shows indent block horizontal enlargement processing, Figure 29a shows indent ruled line conversion key input processing, and Figure 29b shows data flow. , FIG. 30a is a diagram showing the ruled line indentation conversion key input process, FIG. 30b is a diagram showing the data flow, FIG. 31 is a diagram showing the initialization process, and FIG. 32 is a diagram showing the print key input process. be. KB...Keyboard, ROM...Control memory,
RAM...memory, WB...work buffer,
DBuF...Data buffer, CR...Cursor register.

Claims (1)

[Scope of Claims] 1. A character processing device that displays boundaries of document areas using the same pattern, comprising: input means for inputting area data and character data for the same pattern; display means for displaying area data and character data inputted through the input means, and a cursor indicating a display position of character data newly inputted from the input means; , and if the cursor exceeds an area defined by the area data input by the input means, the cursor is moved to the beginning of the next line within the area. means, instruction means for instructing to change the display form of the area data displayed by the display means, based on the instruction from the instruction means, changing the display form of the area data to the same pattern. and display control means for controlling the display means to change the ruled line pattern to a different ruled line pattern.