JPH0820863B2 - Display control method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a display control method capable of displaying a pattern indicating the beginning of a new page area based on an instruction for editing processing from an operator.

[Prior Art] Generally, in a device for displaying a document, in order to know where the document is divided into two sheets when printed, the number of lines of data to be printed is counted and a serial number is set for each delimiter. Technology to be imparted (JP-A-53-64427)
One step forward, technology for displaying dots so that the page can be recognized on the display (JP-A-53-145424) and technology for automatically numbering pages on the display (JP-A-55-147775) Exists In addition, at the time of display, a page separation pattern (for example, a dotted line) is displayed between the last line of the page and the first line of the page (Japanese Patent Laid-Open No. 56-96325).

However, inexperienced operators do not know that such a display is a page break, so it is possible to enclose the page of the document with a certain frame in order to clearly understand the page break. That is, a page break pattern is displayed above the top line of the page, a page break pattern is below the end line of the page, a page break pattern is on the left margin, and a page break pattern is on the right margin. The display is as if there is a sheet of paper on which the letters of the document are placed.

However, there is still room for improvement regarding when to visualize the existence of adjacent pages regardless of whether they are surrounded by a certain frame around the page of the document or not. Conceivable.

[Purpose] In view of the above points, an object of the present invention is to perform the above-mentioned final processing according to the editing process based on the editing instruction from the operator in the state where the page end pattern indicating the end of the area of the last page of the document information is displayed. Determine whether it is necessary to create a new page next to the page, if it is determined that it is not necessary to create a new page next to the final page, the result of the editing process for the final page If it is determined that a new page needs to be created next to the final page, the area of the new page following the final page is displayed after the display position of the page end pattern. Since the control is performed so as to display a page head pattern having a shape different from that of the page end pattern, the operator provides a display control method capable of accurately recognizing the page end and page head displayed according to the editing. Especially.

FIG. 1 is a block diagram illustrating one embodiment of the present invention.

In the illustrated configuration, the CPU is a microprocessor, performs arithmetic operations for character processing, logical decisions, etc., and is connected to these buses via an address bus AB, a control bus CB, and a data bus DB. Control elements.

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 applies the control signals of the respective components to be controlled by the microprocessor CPU. The data bus DB transfers data between the constituent devices.

Next, the ROM is a read-only fixed memory, and stores the control procedure and the like as shown in FIGS. 9 to 26.

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

The KB is a keyboard, and has various types of function keys such as alphabet keys, hiragana keys, katakana keys, etc., and various function keys for instructing various functions for this character processing procedure such as Kanji part start / end specification keys. I have it.

The function keys include, for example, cursor movement keys (cursor up movement key, down movement key, right movement key, left movement key) line delete key, line insertion key, page break key, CR key and the like.

DOCMEM is a buffer that saves character data input from the KB (keyboard) as document data.

FIG. 4 (a) shows how the character string "ABC ... ......" Data is stored in the buffer DOCMEM. Figure 4 (a)
The relationship between the rows and the columns of the data shown in (1) is shown for convenience in order to correspond the relationship between the rows and the columns in displaying on the CRT described later.

LCONTREG indicates the characteristics of the data stored in the buffer DOCMEM in units of lines. It is a memory composed of a plurality of registers (registers and flags). LCON is shown in Fig. 4 (b).
An example of TREG is shown. The first W (W = Word) is the buffer DOCM
This shows the total number of rows EOD of the data stored in the EM, which is 4 in the example of FIG. 4 (a). 2nd W (W
= Word) and subsequent lines are flag FGs for indicating, for each line, whether or not to display a document frame (first frame FGH or last frame FGE) when displaying text data on a display device CRT which will be described later.

CURRFG is a pointer for identifying the location when editing the data in the buffer DOCMEM. Fifth
As shown in Figure (a), X coordinate (CURSOR_X) Y coordinate (CURSOR_X)
OR_Y) 2W (W = Word).

CURDISPREG represents the position of the data in the buffer DOCMEM indicated by the pointer CURREG in association with the display position of the display device CRT described later. Fig. 5 (b)
X coordinate (CURSOR_DISPLAY_X) and Y coordinate (CU
2W (W = Word) of RSOR_DISPLAY_Y). As will be described later, the display device CRT has an X coordinate for displaying a page frame together with document data in order to clarify the concept of a page.
CURSOR_DISPLAY_X, Y coordinates CURSOR_DISPLAY_Y value and CURS
It is different from the value of OR_X and CURSOR_Y. In this example, CURSO
R_DISPLAY_X is 1 larger than CURSOR_X. This is because the left frame is additionally displayed as a document frame (extra to the document data).

Also, CURSOR_DISPLAY_Y is one greater than CURSOR_Y. This is because the leading frame is displayed with one extra line between the beginning and the position of the cursor.

CHADISPBUF is a buffer that stores display data for displaying document data on a display device CRT described later as a character code or a pattern code. FIG. 2 (a)
It shows the state of the data stored in the buffer CHADISPBUF, and also shows the state of the data displayed on the display device CRT described later. Further, the buffer DOCMEM shown in FIG. 4 (a), LCONTREG shown in FIG. 4 (b), CURREG shown in FIG. 5 (a), and the data content of CURDISPREG shown in FIG. 5 (b) are displayed by the apparatus of this embodiment. This shows the contents of the buffer CH ADISP BUF that has been created.

The first line of the buffer DOCMEN is the first line of the memory LCONTREG
Since the first frame flag is set on the line, it is expanded to FIGS. 2 (b) and (f) and the first of the buffer CHADISPBUF is expanded.
It becomes the second line and the second line.

Similarly, the second line of the buffer DOCMEM is shown in FIG. 2 (g) and the third line of the buffer CHADISPBUF.

Similarly, the third line of the buffer DOCMEM is expanded to FIGS. 2 (c) and (d), and the fourth line of the buffer CHADISPBUF is fifth.
It depends on the line. In displaying the framework, as can be inferred from the above description, in the present embodiment, the partial pattern of the ruled line is coded in the same manner as the character code, and the partial pattern is connected to form the framework. It was done like this. FIG. 3 shows a partial pattern of character patterns and ruled lines.

The CRT CONT plays a role of displaying a cursor according to the contents shown in CURDISPREG and displaying a character pattern according to the contents of the buffer CHADISPBUF. FIG. 2 (a) shows the state of the character data and the frame displayed on the CRT. Also CRTCON
T has a pattern memory for displaying a character pattern and also has a function of converting code data in the buffer CHADISPBUF into a pattern.

Further, the CRT is a display device using a cathode ray tube or the like, and the display pattern of the dot configuration and the display of the cursor on the display device CRT are controlled by the CRT controller.

In the character processing device of the present invention comprising the above-mentioned respective components, it operates in response to various inputs from the keyboard KB, and when an input from the keyboard KB is supplied, first, an interrupt signal is sent to the microprocessor CPU. The microprocessor CPU reads out various control signals stored in the ROM, and various controls are performed in accordance with these control signals.

Next, the processing configuration in this embodiment will be described with reference to FIGS.

FIG. 6 shows a processing configuration of editing processing in this embodiment. The editing process is a key fetching process 1 for fetching data from the keyboard KB, a key sorting process 2 for classifying the data fetched by the key fetching process 1, and a bridge to various editing processes, such a key sorting process. Various editing processes 3 that actually execute the various processes classified by 2, and display process 4 that displays the results of the editing performed by the various editing processes 3.
It consists of and.

 FIG. 7 shows the processing configuration of various editing processes.

The various editing processes 3 include a cursor moving process 3 for moving the cursor 1, a line inserting process 3 for inserting a line,
2, line deletion processing for deleting lines 3, 3, page break processing for processing page break input 3, 4, character input processing for character input processing 3, 5, CR (line feed) input processing The CR input processing 3 and 6 and other various editing processing 3 and 7 (for example, character deletion and character insertion).

The delivery to each process is determined by the key classification process described above.

The various editing processes 3 further include the following processes commonly used in the processes of 3, 1, 3 and 7.

Page addition processing for expanding information stored in the buffer DOCMEM in page units 3, 0, 1 Page deletion processing for reducing information stored in DOCMEM in page units 3, 0, 2, controlling page frames It consists of line control processes 3, 0 and 3.

Next, the processing configuration directly related to the present invention will be described more specifically using the operation flows of FIGS. 9 to 26.

 This is the main processing in this embodiment.

 The editing process 0 will be described in detail with reference to FIG.

(1) Key acquisition processing 1 Input data from the keyboard is acquired. If there is no input data, wait until it is input.

(2) Key classification processing 2 According to the data acquired by the key acquisition processing, it is distributed to various editing processing.

(3) Various editing processes 3 Cursor movement, line insertion, line deletion, page break, character input, C
Performs various editing processes such as R input.

(4) Display process 4 The results of various editing processes are displayed. After the processing, proceed to step (1).

As is clear from the above description of each step, the editing process 0
Forms a main routine for performing various editing processes.

Next, the cursor down movement processing 3, 1, 2 which is one of the cursor movement processings 3, 1 will be described in detail with reference to FIG.

(1) Cursor Y coordinate check 3, 1, 2, 1 It is checked whether or not the cursor points to the last line of document data (sentence end line). If the cursor is on the last line of the sentence, that is, if the values of CURSOR_Y and the total number of lines EOD are equal, the process proceeds to step (2). If not, go to step (3).

(2) Page addition processing 3, 0, 1 A data area for one page is created under the last line of the sentence.

(3) Update cursor Y coordinate 3, 1, 2, 3 Increase cursor Y coordinate by 1. (CUROS_Y) As is clear from the above description of each step, the cursor down movement processing 3, 1 and 2 has a function of moving the cursor identifying one character in the sentence down one line. At that time, if there is no area that can be moved down, that is, if the cursor is in the last line of the document data, create a data area for one page further below and move the cursor down one line. I am trying to let you.

Next, the line insertion processing 3 and 2, which is one of the various editing processing 3, will be described in detail with reference to FIG.

(1) Move data 3, 2, 1 Moves all data existing after the line where the cursor is located down by one line. After moving, fill the space. (A code indicating a blank may be used instead of a space.) (2) Update of the total number of rows EOD 3, 2, 2 Increase the value of the total number of rows by 1.

(3) Line control processing 3, 0, 3 When displaying document data on the display device CRT,
Decide how to display the page frame of the document data,
The result is set in LCONTREG ,. This process is because the change in the total number of lines occurred in steps (1) and (2).
This is done because it is necessary to reset LCONTREG.

As is clear from the above description of each step, in the line insertion processing, a blank line for one line is inserted at the position where the cursor exists, and basic data for frame display is created.

As a result, the frame display of the inserted line becomes as follows.

That is, if a new page is created as a result of the line insertion, a new framework is created as the final page, and if the new page is not created, the framework of the final page expands the previous framework. Will result. In other words, if line insertion is repeated, the framework of the final page will be gradually expanded until a new final page is created, and when a new final page is created, a new framework will be created. The display device CRT
Will be displayed above.

Next, the line deletion processes 3 and 3 will be described in detail with reference to FIG.

(1) Data move processing 3, 3, 1 Move one line up from the line next to the line where the cursor is present to the last line of the document data.

A space is filled in the last line of the document data after the movement. (A space code may be used instead of the space code.) (2) Line control processing 3, 0, 3 LCONTREG is reset.

(3) Page deletion processing 3, 0, 2 If there is a blank page for one page at the end of the document data,
Delete the page.

As is clear from the above description of each step, in the line deletion processing, the line in which the cursor is present is deleted by one line, and the document data after that is moved by one line for all lines. As a result, if there is a page consisting only of space codes or a page consisting only of codes indicating blanks at the end of the document data, that page is deleted. Therefore, when the line deletion is repeated, the page existing at the end of the document data disappears at a certain point, and the final page frame also disappears at that point in the display.

Needless to say, it is assumed here that the document data exists in two or more pages.

 Another embodiment of the line deletion process will be described with reference to FIG.

(1) Data movement process 3, 3, 1 Same as FIG. 3, 3, 1 data movement process (2) Update of total number of rows 3, 3, 2 Total row number EOD is decreased by 1.

Here, it is assumed that the cursor does not exist in the last line of the document.

(3) Reset the line control process 3, 0, 3 LCONTREG.

As is clear from the above description of each step, the final page frame is gradually reduced by repeating the line deletion, and finally, the final page frame is reduced, and the line deletion is further repeated.
The new final page frame will become smaller again.

Next, the page break processing 3 and 4 will be described in detail with reference to FIG.

(1) Page break code writing process 3, 4, 1 Write the page break code at the position of DOCMEM corresponding to the position where the cursor exists. (2) CR process 3, 6 Move the cursor to the beginning of the next line.

At that time, if the current cursor position is at the end of the document data and the next line does not exist, a new page is added to the end of the document data and the cursor is moved.

As is clear from the above description of each step, by adding the document data area in page units, the editing process can be performed more easily for the operator.

Next, the character input devices 3 and 5 will be described in detail with reference to FIG.

(1) Cursor position check 3, 5, 1 If the cursor is at the end of the document, go to step (2). If not, go to step (3).

(2) Page addition processing Document data is added in units of pages 3, 10, and 1.

(3) Character writing process 3, 5, 3 Write the character data input at the position where the cursor exists. (4) Cursor advance process 3, 5, 4 Cursor is advanced. In this case, stepping means that when the cursor is at the end of X coordinate, that is, at the right end, the cursor is moved to the left end of the next line (CURSOR_X 1, CURSOR_Y CURSOR_Y + 1), and when it is in another position, move the cursor one position to the right (CURSOR_X CURSOR_X + 1) is meant.

As is clear from the above description of each step, when there is a character input, if it is necessary to expand the document data area, the document data area is expanded page by page and the processing is performed.

 Next, the CR processing will be described in detail with reference to FIG.

(1) Cursor position check 3, 6, 1 If the cursor is on the last line of the document data, go to step (2). If not, the process proceeds to step (3). (2) Page addition processing The document data area is added in units of 3, 0 and 1 pages.

(3) Cursor line feed processing 3, 6, 3 Moves the cursor to the beginning (left end) of the next line.

(CURSOR_X 1, CURSOR_Y CURSOR_Y + 1) As is clear from the above description, in CR processing,
When it is necessary to expand the document data, the processing is performed by expanding the page data in page units.

Next, the page addition processing 3, 0 and 1 will be described in detail with reference to FIG.

(1) Line addition processing 3, 0, 1, 1 A space code of a plurality of lines or a code indicating a blank is added to the end of the document data, and the value of the total number of lines OD is updated by the number of lines.

The number of lines added here is the number of lines estimated to be at least one page or more. For example, if one page consists of 28 lines, it is sufficient to add about 50 lines.

(2) Line control processing 3, 0, 3 LCOUTREG is set, and the concept of page is clarified for the line added in step (1).

(3) End-of-Page Search Process 3, 0, 1, 3 The end-of-page line is searched in order from the beginning of the line added in step (1). The search can be easily implemented by referring to the end frame FG of each page of LCONTREG.

(4) Total line number resetting processing 3, 0, 1, 4 The line number of the last page found first in step (3) is set to the total line number EOD.

As is clear from the above description of each step, the blank line (space line) for one page can be easily added to the end of the document by this process.

Next, the page deletion processes 3, 0 and 2 will be described in detail with reference to FIG.

(1) Last page recognition process 3, 0, 2, 1 Check which line in DOCMEM corresponds to the last page.

 See LCONTREG to find out.

The page unit is the first frame set and reset for each line FG
Also, the unit of page can be known by the end frame FG. That is, each page is formed such that the line in which the head frame FG is set is the head line and the line in which the tail frame FG is set is the tail line. Therefore, to recognize the last page, LCON
When the first frame FG of TREG is searched from the last line of the document data and the position where the first frame FG is set is found for the first time, the line below it can be recognized as the last page.

(2) Check in last page 3, 0, 2, 2 Check whether valid data exists in the last page.

In this embodiment, the valid data refers to a code other than the space code, but it may have another definition.

 For example, a code other than the blank code.

(3) Valid data existence check 3, 0, 2, 3 If valid data exists as a result of step (2),
This process (page deletion process) ends. If not, proceed to step (4).

(4) Total line number reduction processing 3, 0, 2, 4 Change the total line number EOD in order to delete all the pages recognized in step (1). The value to be changed is the value of the line immediately preceding the page to be deleted.

(5) Update of CURSOR_Y This process is performed to prevent the cursor from protruding outside the document area as a result of step (4).

That is, when the value of CURSOR_Y becomes larger than the total number of rows EOD, the value of CURSOR_Y is changed to the value of EOD.

As is apparent from the above steps, blank pages existing at the end of the document data can be deleted page by page by the page deletion process.

Next, the row control processes 3, 0 and 3 will be described in detail with reference to FIG.

(1) Initial setting of current parameters 3, 0,
3, 1 TLN 0 (Document data inline counter) CLN 0 (in-page line counter) TLN means a line counter as document data, and CLN means an in-page line counter.

(2) Document data inner line counter TLN increment 3, 0, 3, 2 (3) Page inner line counter determination processing 3, 0, 3, 3 The TLNth line in the document data corresponds to the number line of the corresponding page. Is calculated and a value is set in the page inner line counter CLN.

(4) Leading frame determination processing 3, 0, 3, 4 In-page counter CLN determined in step (3)
Depending on the value of, it is judged whether the line or the top of the page, and LCONTREG
Set and reset the top frame FG of (5) End frame determination process 3, 0, 3, 5 Step within line page CLN determined by step (3)
Refer to the value of, etc. to determine whether the corresponding line is the last line of the page, and set or reset the last frame FG of LCONTREG.

(6) End judgment 3, 0, 3, 6 It is judged whether or not the setting of LCONTREG has been completed for all the number of lines of document data.

If completed, this process (line control processes 3, 0, 3) ends. If no, go to step (2).

As is clear from the above description of each step, LCONTREG can be set by the line control process.

Next, the in-page counter determination processing 3, 0, 3, 3 will be described in detail with reference to FIG.

(1) Page in-line counter check 3, 0, 3, 3, 1 If the value of the page in-line counter CLN is 0, the process proceeds to step (5). If no, go to step (2).

(2) Page break line check 3, 0, 3, 3, 2 CLN line, that is, the line immediately preceding the line to be decided (TLN line)
-1 line) or a page break line.

 If it is a page break line, proceed to step (5).

If not, go to step (3). The page break line is a line including a page break code in the line.

(3) Page last line check 3, 0, 3, 3, 3 CLN line, that is, the line immediately preceding the line to be decided (TLN
-1 line) is the last line of the page.

In this embodiment, the value (1
If the CLN value matches the number of lines on the page), it is determined to be the last line on the page.

If the result of the determination is the last line of the page, go to step (5). If not, proceed to step (4).

(4) In-page counter increment processing 3, 0, 3, 3, 4, increments the value of the in-page counter CLN by 1. Then, the in-page counter determination process for the page ends.

(5) In-page counter initial value setting processing 3, 0, 3,
Set page in-line counter CLN to 1.

As is clear from the above description of the steps, the number of in-page lines of the TLNth line can be known by the in-page line counter determination processing.

Next, the leading frame determination processing 3, 0, 3, 4 will be described in detail with reference to FIG.

(1) Page in-line counter check 3, 0, 3, 4, 1 If page in-line counter CLN = 1, step (2)
Proceed to.

 If not, go to step (3).

(2) Leading frame FG set 3, 0, 3, 4, 2 It is determined that the TLN line is the leading line of the page, and the leading frame FG of the corresponding line is set. After that, the leading frame determination process ends.

(3) Leading frame FG reset 3, 0, 3, 4, 3 It is judged that the TLN line is not the leading line of the page, and the leading frame F of the corresponding line
Reset G.

As is clear from the above description of each step, the leading frame flag of the TLN-th line can be determined in this processing.

Next, the end frame determination process will be described with reference to FIG.

(1) Page break line check 3, 0, 3, 6, 1 Checks whether the line (TLN line) is a page break line. If it is a page break line, proceed to step (5).

 If no, go to step (2).

(2) Page last line check 3, 0, 3, 6, 2 Check whether the line (TLN line) concerned or the page last line.

Here, the last line of the page means that the value of the in-page line counter CLN coincides with a predetermined value (the number of lines on one page).

If it is the last line of the page, proceed to step (5). If not, go to step (3).

(3) Document end line check 3, 0, 3, 6, 3 It is checked whether the corresponding line (TLN line) is the document end line. Here, the last line of the document is the document data inline counter TL.
We say that the value of N matches the value of the total number of rows EOD.

If it is the last line of the document, go to step (5). If not, go to step (4).

(4) End frame FG reset 3, 0, 3, 6, 4 It is determined that the corresponding line (line TLN) is not the end line of the page, so the end frame FG is reset. After that, the end frame determination process is ended.

(5) End frame FG set 3, 0, 3, 6, 5 Set the end frame FG because the relevant line (line TLN) is judged to be the end line of the page.

As is clear from the above description of each step, this processing can set LCONTREG corresponding to the TLN line.

 Next, the display processing 4 will be described with reference to FIG.

(1) Clear the screen 4, fill all the space codes in 1 CHADISPBUF. This clears the CRT screen.

(2) Cursor display 4, 2 Displays the cursor.

(3) Character display 4, 3 Display data in DOCMEM.

The cursor and character data are displayed through the above steps.

Next, the cursor display processing 4 and 2 will be described with reference to FIG.

(1) X-coordinate determination processing 4, 2, 1 The value of CURSOR_X is obtained by adding 1 to the value of CURSOR_X.

This is because the corresponding position on the display is shifted to the right by 1 to display the left frame.

(2) Frame Line Number Calculation Processing 4, 2, 2 The total number of frame lines existing from the first line to the line where the cursor is present is calculated.

(3) Y coordinate determination processing 4, 2, 3 The sum of the number of frame lines obtained in step (2) and the value of CURSOR_Y is set as the value of CURSOR_DISPLAY_Y.

By the above steps, the values of CURSOR_DISPLAY_X and CURSOR_DISPLAY_Y corresponding to the values of CURSOR_X and CURSOR_Y can be calculated, and CURSOR_DISPLAY_X and CURSOR_DISPLAY_Y
The cursor is displayed at the position on the CRT indicated by.

Next, the frame line number calculation processing 4, 2 and 2 will be described with reference to FIG.

(1) Leading frame line number calculation processing 4, 2, 3, 1 The total number of leading frames from the leading line to the line where the cursor is located is calculated.

The total number is determined by finding the number of lines in which the first frame FG of LCONTREG is set.

(2) End frame line number calculation processing 4, 2, 3, 2 The total number of end frames from the first line to the line before the line where the cursor is located is calculated.

The total number is determined by finding the number of lines in which the last frame FG of LCONTREG is set.

(3) Total frame line number calculation processing 4, 2, 3, 3 The total frame line number is determined by summing the line numbers obtained in steps (1) and (2).

Through the above steps, the number of frame lines existing from the beginning to the line where the cursor is present can be obtained.

Next, the character display processes 4 and 3 will be described with reference to FIG.

(1) Current parameter initial value setting process 4, 3, 1 TLN 0 (Document data inline counter) (2) Document data inline counter increment 4,
3, 2 TLN TLN + 1 (3) Leading frame display check 4, 3, 3 Check whether or not the leading frame should be displayed when displaying the TLN line on the CRT by referring to LCONTREG.

If it is necessary to display the top frame, proceed to step (4). If not, proceed to step (5).

(4) Leading frame display processing 4, 3, 4 In order to display the leading frame, the leading frame pattern code string shown in FIG. 2B is written into CHADISP_BUF for one line.

(5) Line display process 4, 3, 5 CHADISP_BUF the line data (character code string) of the TLNth line
Write in.

At that time, a pattern code representing the side edge of the framework is added to the beginning and the end of the row data.

 For example, as shown in FIGS. 2 (f) and 2 (g).

(6) End frame display check 4, 3, 6 Check whether to display the end frame when displaying the TLN line on the CRT by referring to LCONTREG.

If it is necessary to display the end frame, proceed to step (7). If not, proceed to step (8).

(7) End frame display 4, 3, 7 In order to display the end frame, one line of the end frame pattern code string shown in FIG. 2 (d) is written in CHADISPBUF.

(8) Processing end check 4, 3, 8 If the value of TLN is equal to the value of EOD, that is, if display of all lines is completed, character display processing 4, 3 is ended. If no, go to step (2).

Through the above processing, the display of the data in DOCMEM is completed in the form displayed in the page frame.

In the present embodiment, the structure of DOCMEM, that is, the data format, is composed of fixed-length records with one record as one record. However, when one record is represented by a variable length, or when the concept of a record is not clear (serial The data format) does not defeat the purpose of the invention.

As described above, by providing the means for controlling the document data area page by page, it is possible to realize a display control method that is easy for the operator to understand.

When it is necessary to enlarge the document data area as described above, for example, when the cursor is located at the end line of the document data and the cursor is further lowered, the cursor is located at the end line of the document data. When the line feed key is typed in the presence of a line, an attempt is made to insert a line at an arbitrary position, or any other time when it is necessary to expand the document data area, the operator must be aware of the page. It becomes possible to do.

[Effect] As described above in detail, according to the present invention, in the state where the end-of-page pattern indicating the end of the area of the final page of the document information is displayed, the final page is accompanied by the editing process based on the editing instruction from the operator. It is determined whether a new page needs to be created next to, and when it is determined that a new page does not need to be created after the final page, the result of the editing process for the final page is displayed. However, when it is determined that a new page needs to be created next to the last page, it indicates the beginning of the area of the new page following the last page, following the display position of the page end pattern. Since the control is performed so as to display a page head pattern having a shape different from the page end pattern, the operator provides a display control method capable of accurately recognizing the page end and page head displayed according to the editing. Became possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment according to the present invention, FIGS. 2 (a) to 2 (g) are diagrams for explaining a buffer CHADISPBUF, FIG. 3 is a diagram showing a pattern, and FIG. 4 (a) is a buffer. FIG. 4 (b) is an explanatory diagram of the buffer LCONTREG, FIG. 5 (a) is an explanatory diagram of the pointer CURREG, FIG. 5 (b) is an explanatory diagram of the pointer CURDISPREG, and FIG. 6 is an editing process. FIG. 7, FIG. 7 is a diagram for explaining various editing processes, FIG. 8 is a diagram for explaining the cursor moving process, and FIGS. 9 to 26 are diagrams for showing a control procedure for explaining the embodiment of the present invention. , DOCMEM …… buffer LCONTREG …… buffer CURREG …… pointer

Continuation of front page (56) Reference JP-A-56-153443 (JP, A) JP-A-57-44185 (JP, A) JP-A-58-163990 (JP, A)

Claims (2)

[Claims] 1. In a state in which a page end pattern indicating the end of the area of the last page of the document information is being displayed, a new page is added next to the last page in association with the editing process based on the editing instruction from the operator for the document information. It is determined whether a page needs to be created, and if it is determined that a new page is not required to be created next to the final page, the result of the editing process for the final page is displayed, and the final page is displayed. If it is determined that a new page needs to be created next to, after the display position of the page end pattern,
A display control method characterized by controlling so as to display a head of a region of the new page following the last page and having a shape different from the end pattern of the page. 2. An editing instruction to the document information from an operator is a line feed instruction on the last page or an instruction to move the cursor on the last page beyond the page end pattern. The display control method according to item 1.