JPH0850584A - Document data processor - Google Patents

Abstract

PURPOSE:To provide the document data processor making a reduction while changing the page data arrangement and the dimension according to the number of page data to be displayed. CONSTITUTION:The document data stored in a storage means 6 consists of plural page data arranged in the set order. The number of plural page data arranged in the set order is directed by an input means 3. With a control means 5, the arrangement of page data to be displayed on a display means 4 and the reduction rate are decided based on the number of pages to be displayed, the form size of the document data and the format. Thus, the plural pages are displayed at the same time on the display means 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document data processing apparatus which is suitable for use in a word processor for inputting, editing, and printing documents and which simultaneously displays a plurality of pages and has an editing function in page data units. .

[0002]

2. Description of the Related Art In general, a display device attached to or connected to a document processing device such as a word processor can display only a part of a page in a document being created due to restrictions such as a screen size for display output. In addition, in the normal document editing screen, the screen does not change at all even if the format such as the line spacing or the character spacing is changed. Therefore, until the actual printing, the composition of the page and the arrangement relationship of characters in the page are not known, and the composition must be changed or corrected after seeing the print result.

Some document processing apparatuses having a display device capable of displaying only a part of a page during normal input or editing have a so-called layout display mode in addition to a mode for performing normal input. In the layout display mode, a specific symbol or a reduced character that is different from the character used during normal input is used to display the entire page in which the sentence being created exists as if it were printed. By using the layout display mode, the configuration at the time of printing can be known without actually printing.

The layout display described above is performed only for one page. Therefore, even if you try to check the layout of multiple pages in a document, for example by comparing the composition of each page,
To view a page different from the page currently displayed because you cannot display multiple pages at the same time, return to the normal input screen once from the layout display screen and specify the page for which you want to display the layout. Layout display must be done. Also, since only one page is actually displayed, the same work must be repeated for the number of pages for which the layout is to be confirmed.

A technique for displaying a layout of a plurality of pages in a document is described in Japanese Patent Laid-Open No. 60-225971.
According to the above-mentioned publication, a layout output control means is provided in the document processing device, and the display area is reduced by replacing the character data of the page on which the layout display is performed with a specific dot pattern, etc. The layout is displayed across.

[0006]

In the document processing apparatus as described above, since the character used when displaying the layout of a plurality of pages is a specific dot pattern corresponding to the character in the document, a plurality of pages are displayed. It is not easy to check the document on the layout display screen. In addition, a memory for storing the dot pattern used for the layout display is specially required. Furthermore, since the dot pattern does not change with a fixed size, the size of the layout display does not change regardless of how many pages are displayed.

It is an object of the present invention to provide a document data processing apparatus for displaying a plurality of page data simultaneously by changing the layout and size of the page data depending on the number of page data to be displayed and reducing the size.

[0008]

SUMMARY OF THE INVENTION According to the present invention, print data printed in a predetermined format on a paper of a predetermined size is used as page data, and document data composed of a plurality of page data arranged in a predetermined order is stored. Document data storage means, display means for displaying document data in page data units,
Based on the selection means for selecting the number of page data to be displayed simultaneously on the display means, the output of the selection means, and the predetermined paper size and format, the arrangement and reduction ratio of the page data to be displayed on the display means are determined. And a display control means for controlling the document data processing device. Further, according to the present invention, from the page data displayed on the display means, 2
The display means and the display control means include a designating means for designating one page data.
It is characterized in that one page data is displayed with its display position switched and the order of two designated page data in the document data stored in the document data storage means is switched. Still further, the present invention includes an instruction means for instructing a change of page data displayed on the display means, wherein the display control means determines that the number of page data constituting document data is the page displayed on the display means. When the number of data is larger than the number of data, the page data to be displayed is changed in response to the instruction of the instruction means.

[0009]

According to the present invention, with respect to the document data stored in the document data storage means, the selection means is used to specify the number of page data to be simultaneously displayed on the display means, and the page specified by the selection means is designated. Based on the number and the paper size and format of the document data, the display control means determines the layout and reduction ratio of the page data displayed on the display means, and a plurality of pages are simultaneously displayed on the display means.

Therefore, a plurality of pages can be displayed on the display means at the same time, and the number of pages to be displayed can be selected by oneself. Further, the display size and layout are changed based on the paper size and format of the document data in addition to the selected page number.

Further preferably, the document data processing device is
There is provided a designating means for designating two page data out of the page data displayed on the display means, the two page data designated by the designating means are interchanged and displayed, and further stored in the document data storage means. Swap the order of each page data. Therefore, the page data can be exchanged only by designating any two pages.

More preferably, the document data processing device includes an instruction unit for instructing a change of page data displayed on the display unit, and changes the page data to be displayed when the instruction is instructed to change the page data. Therefore, it is possible to change the display contents while displaying multiple pages.
It is possible to display page data in the document data which is not displayed on the display means.

[0013]

1 is a basic block diagram of a document data processing apparatus 1 according to an embodiment of the present invention. The document data processing device 1 includes a main body 2, an input unit 3, and a display unit 4.

The main body 2 includes a control means 5, a storage means 6, and
It includes a character generator 7 and a bitmap image storage buffer 8. The input means 3 is for instructing operations such as character input, editing, and images, and is generally realized by a keyboard, a pen tablet, or the like. The display means 4 shows characters input with reference to the contents of a bitmap image storage buffer 8 described later and the result of work such as document editing, and is generally a CRT.
(Cathode Ray Tube) Display and liquid crystal display.

The control means 5 is a CPU (Central Process).
ssing Unit) and functional circuits arranged in the periphery, and performs processing such as control of the entire device, character input, document editing, and layout display of multiple pages. The storage unit 6 is for storing and holding document data being edited input by the input unit 2 and information necessary for a data processing process, and is a RAM (Random Access Memories).
mory) and other memories. In this embodiment, they are mainly used as the document buffer 9, the work buffer 10 and the save buffer 11.

FIG. 2 is a view showing the data structure of the document buffer 9 stored in the storage means 6. The document buffer 9 stores the document data input using the input means 3 as a character code corresponding to the document data, and an area R1 for storing the format information DS of the entire document data and the character data DL. Is stored therein, an area R2 for storing the ruled line data DK, and an area R4 for storing the figure / image data DI. Further, a reference symbol R is used to indicate the entire storage area of the document buffer 9. The editing process for the input document is performed on the data stored and held in the document buffer 9.

FIG. 3 is a diagram showing a data storage format when the format information DS is stored in the area R1 in the document buffer 9. The area R1 for storing the format information DS is composed of a plurality of areas S1 to S8. Information such as the paper size is stored in the area S1. The area S2 stores the number of characters in one line of the document data. Information about the line feed pitch is stored in the area S3. In the area S4, underline / shaded type information is stored. In the area S5, information on the number of dots of characters used and the type of points is stored. Area S6
Stores the number of dots between characters. Area S
Information of decorative characters is stored in 7. In the area S8,
A flag U1 indicating the presence / absence of document data is stored. The areas S1 to S8 forming the format information DS are each formed with a size of 1 byte. The area S1 includes a paper size storage area T1 having a size of about 3 bits, bits ON,
It is configured to include a print direction designation bit T2 that distinguishes vertical writing from horizontal writing by OFF, and a paper insertion direction designating bit T3 that distinguishes whether the paper is placed vertically or horizontally by turning the bit ON or OFF. The flag U1 indicates the presence / absence of document data by turning ON / OFF a predetermined bit.

The work buffer 10 temporarily stores information necessary for processing such as document editing, and the save buffer 11
Stores and holds document data for one page when moving a page. The character generator 7 provides the information of the character data corresponding to the character code stored and held in advance to the input from the input means 2. The bitmap image storage buffer 8 is
It is a storage memory for expanding the bitmap image data supplied to the display means 4.

FIG. 4 is a diagram showing a storage format of the bitmap image data which is expanded and stored in the bitmap image storage buffer 8. Areas K1, K2 for storing data forming one character on the display means 4
.., Km store 1-byte data in order from the most significant bit to the least significant bit. A data storage area L1 for storing one line of characters displayed on the display means 4 by the data storage areas K1, K2, ..., Km.
Is formed. Similarly, L2, L3, ..., Ln are formed. The number of characters (m) and the number of lines (n) in one line are changed depending on the size of the displayable area in the display means. In the present embodiment, the size of the area of the bitmap image storage buffer 8 is 128 kbytes as an example.

The character input from the input means 3 is stored in the document buffer 9 in the storage means 6 by the control means 5 as a character code, and the control means 5 converts the character data corresponding to the character code of the character into character data. The data is acquired from the generator 7, expanded in the bitmap image storage buffer 8, and output to the display means 4.

FIG. 5 is a flow chart showing a process for simultaneously displaying a plurality of pages in the document data processing device 1 configured as described above.

The process of the flowchart of FIG. 5 is started by a predetermined instruction input from the input means 3.
First, as step s1, preprocessing, which is a processing routine described later, is performed to acquire the number of pages for layout display and the reduction ratio. Next, in step s2, of the data stored in the document buffer 9, data for the number of pages to be layout-displayed is expanded in the save buffer 11 page by page. Step s2 is further composed of three steps. Step a1 in step s2
The character data DL is expanded in the save buffer 11, the ruled line data DK is expanded in the save buffer 11 in step a2, and the graphic / image data DI is expanded in the save buffer 11 in step a3.

In step s3, the bit map data expanded in the save buffer 11 is processed in step s1.
The data is reduced based on the reduction rate information acquired in the pre-processing, and display data is generated. Data reduction is
For example, the reduction processing disclosed in Japanese Examined Patent Publication No. 2-19462 is used. Thus, even in the layout display, it is possible to recognize what kind of content the data is. In the subsequent step s4, the start address of the page for which layout display is instructed among the respective data stored in the document buffer 9 is stored in the start address instruction pointer table 21. The start address instruction pointer table 21 is provided in a predetermined area in the storage means 6.

In step s5, it is judged whether or not the data for the number of pages to be layout-displayed has been expanded and compressed. If the expansion and compression of the data of the page to be displayed are completed, the process proceeds to step s7. When it is determined in step s5 that the expansion and compression of the data for the number of pages to be layout-displayed have not been completed, the process proceeds to step s6, and it is determined whether or not there is data on the next page and thereafter. If there is data on the next page and thereafter, the processing from step s2 is performed again. If there is no data on the subsequent pages, the process proceeds to step s7.

In step s7, the end address of the last page to be displayed is stored in the start address designating pointer 21. In the next step s8, the developed data for each page is displayed on the display means 4. The state of the screen displayed on the display means 4 will be described later. In step s9, a cursor is displayed at the portion displaying the page number of each page in order to instruct each page displayed on the screen on the screen. The cursor is hereinafter referred to as "data cursor". Step s
At 10, it is determined whether or not the movement of the data cursor is instructed by the input means 3. If the movement of the data cursor is not instructed, the process proceeds to step s11,
It is determined whether the input means 3 has instructed to return to the document edit screen. If it is instructed to return to the document edit screen, the plural page simultaneous display process is terminated and the process returns to the document edit process. If there is no instruction to return to the document edit screen in step s11, the process returns to step s10.

If the movement of the data cursor is instructed by the input means 3 in step s10,
The process proceeds to step s12, and the data cursor display position is corrected. In step s13, it is determined whether or not screen scrolling is necessary when correcting the display position of the data cursor.
If it is not necessary to move the screen, the process returns to step s8 and the subsequent processes are repeated. When it is necessary to move the screen in step s13, the process proceeds to step s14, the display start page and the end page are set again, and the processing from step s2 is performed again.

FIG. 6 shows how each data is stored in the document buffer 9 and the start address of each data page is stored in the start address instruction pointer table 21 described in step s4 of the above flow chart. It is a figure which shows the storage format at this time.

The pointer table 21 is composed of three pointer tables: a character data start address instruction pointer table PL, a ruled line data start address instruction pointer table PK, and a figure / image data start address instruction pointer table PI. Therefore, each data has a data storage area one more than the maximum displayable page and stores the start address of each page. In this embodiment, the maximum number of pages that can be displayed is eight, so nine pointer tables are prepared.

The area in which the character data DL1 of the first page is stored is defined as an area RL1, and the character data D of the fourth page will be described below.
Similarly, data names and area names are determined up to L4. The area in which the ruled line data DK1 of the first page is stored is the area RK.
In the same manner, the data name and the area name up to the ruled line data DK4 on the fourth page are set as 1. Also, with the area in which the figure / image data DI1 of the first page is stored as the area RI1, the data name and area name are similarly defined up to the figure / image data DI4 of the fourth page.

The top address of the storage area for each page in each data determined as described above is stored in the corresponding start address instruction pointer table 21. The first storage area PL1 of the character data start address instruction pointer table PL stores the start address of the area R1 in which the character data DL1 of the first page is stored. Similarly, the head address of the area RL2 in which the character data DL2 of the second page is stored is stored in the second storage area PL2. Further, the head address of the area RL3 in which the character data DL3 of the third page is stored is stored in the third storage area PL3, and the character data DL4 of the fourth page is stored in the fourth storage area PL4. The head address of the stored area RL4 is stored. 4 in the fifth region PL5
The ending address of the area RL4 in which the character data DL4 of the page is stored is stored. Similarly, addresses are stored in the ruled line data start address instruction pointer tables PK1 to PK5 and the figure / image data start address instruction pointer tables PI1 to PI5. In each pointer table, 0FFFFh is stored in the storage area in which the address is not stored to distinguish it from the page to be displayed.

FIG. 7 shows a state in which a plurality of pages are simultaneously displayed on the display means 4 and page data is stored in the page data storage table 40.
It is a figure which shows the storage format when it stores in. On the display screen 31, a display image 32 of each page, a page number display section 33 which is attached to the display image 32 and displays the page number of the display image 32 in the document, and a data cursor 34 for selecting a page are displayed. And a function display section 35 for displaying the functions assigned to the function keys provided in the input means 3. Page data storage table 40
, VPn (page numbers storage areas VP1, VP2, ..., VPn) and start address storage areas VS1, VS2, ..., VSn (collectively referred to by reference numerals VS) for each page. It is composed by. The value of n changes depending on the number of pages included in one document,
An area for the number of pages existing in the document is secured. The page number storage area VP has a length of 1 byte and stores the page number in the document. The start address storage area VS also has a length of 1 byte, and stores the start address of each page stored in the page number storage area VP.

FIG. 8 is a flow chart showing the processing performed in the pre-processing. First, in step b1, the number of pages to be displayed in one screen input from the input means 3 is stored in the work buffer 10. Unless otherwise specified, the work buffer 10 refers to information regarding the number of pages acquired last time. Then step b
As data 2, data about the paper size and paper orientation of the document to be layout-displayed is acquired from the format information storage area R1 in the document buffer 9 and stored in the work buffer 10.

Next, in step b3, steps b1,
Based on the number of pages to be displayed, which is acquired in step b2, and is stored in the work buffer 10 and the information on the paper size and the paper direction of the document to be displayed, the reduction ratio table in Table 1 below is displayed on the display means 4. The reduction ratio per page is acquired and stored in the work buffer 10.

[0034]

[Table 1]

Table 1 shows the reduction ratio depending on the paper size and the paper direction with respect to the number of pages to be displayed.
The part indicated by "-" in Table 1 is not set because it cannot be displayed by the display means 4 used in this embodiment. Further, the reduction rate information is stored in advance in the storage means 6.

Next, in step b4, step b3
If it is determined that the reduction is possible based on the reduction ratio acquired in step S5, the process proceeds to step b5. If the acquired reduction ratio is inappropriate, the processing from step b1 is performed again.

In step b5, the display image shown in the following Table 2 is obtained based on the number of display pages acquired in steps b1 and b2 and stored in the work buffer 10 and the information on the paper orientation of the document to be displayed. The arrangement information of the display image 32 to be displayed on the display means 4 is acquired from the arrangement table of 32 and stored in the work buffer 10. The arrangement information of the display image 32 is stored in the storage means 6 in advance.

[0038]

[Table 2]

Table 2 also shows how the pages are arranged according to the number of pages to be displayed and the document sheet direction, in correspondence with FIG. In Table 2, the portion indicated by "-" is not set because it cannot be displayed by the display means 4 used in this embodiment.

FIG. 9 is a view showing an arrangement example of the display image 32 displayed on the display means 4. In FIG. 9, FIG.
The same components as those of the above are given the same reference numerals. On each display screen 31, the display images 32 for the number of display pages are displayed.

On the display screen 31 shown in FIG. 9A, a vertically long display image 32 is displayed in the center of the display screen 31 for one page. On the display screen 31 shown in FIG. 9 (2), a display image 32 that is long in the vertical direction is displayed for two pages separately on the left and right sides of the display screen 31. On the display screen 31 shown in FIG. 9C, a display image 32 that is long in the vertical direction is displayed in two rows of two pages each. Display screen 3 shown in FIG. 9 (4)
1 has 2 vertically long display images 32 for 3 pages each.
Displayed across columns. Display screen 31 shown in FIG. 9 (5)
, A display image 32 that is long in the vertical direction is displayed in two rows of four pages each. On the display screen 31 shown in FIG. 9 (6), a display image 32 that is long in the lateral direction is displayed on the display screen 3 for one page.
It is displayed in the center of 1. Display screen 31 shown in FIG. 9 (7)
, A display image 32 that is long in the horizontal direction is displayed separately on the upper and lower sides of the display screen 31 for two pages. On the display screen 31 shown in FIG. 9 (8), a display image 32 that is long in the horizontal direction is displayed in two rows of two pages each.

Next, in step b6, it is determined whether the display image 32 can be displayed on the display means 4 based on the arrangement information of the display image 32 acquired in step b5.
If it is determined that the display is possible, the process proceeds to step b7, and if it is determined that the display is impossible, the process from step b1 is performed again.

At step b7, the page number of the document edit screen where the cursor is currently positioned is acquired, and the work buffer 1
Store in 0. In step b8, the start page and the end page to be displayed on the display means 4 are calculated with reference to the page number acquired in step b7. Expressions (1) and (2) shown below are for displaying the display images 32 for n pages on the display screen 31, respectively. Formula (1) is a formula for obtaining the start page, and formula (2) is a formula for obtaining the end page.

Start page = Page with cursor (1) End page = Page with cursor + n-1 (2) Example Page at cursor position = 1 Display page number = 4 Display start page → 1 Display end page → 4 Information on the calculated display start page and end page is stored in the storage means 6.

FIG. 10 is a diagram showing in stages the actual screen changes from the screen being edited to the layout display of a plurality of pages, which is the same as the multiple page simultaneous display screen shown in FIG. The same reference numerals are attached to the components. Figure 10
Since a document is being edited, a part of the document is displayed on the display screen 31 shown in (1). At this stage, by selecting the layout display execution key 36 prepared in the function display section 35, the processing shown in the flowchart of FIG. 5 is executed.

On the display screen 31 shown in FIG. 10 (2),
A window 37 for inputting the number of display pages is opened to prompt the user to input the number of display pages required for displaying the layout. A window is a certain range of display that is clearly distinguished from the display screen on the display screen so as to prompt the user to make a specific input. Will be deleted when is confirmed. Here, it is assumed that "8" is input as the number of display pages. After inputting the number of pages to be displayed, it is determined whether display is possible by referring to the paper size and paper direction stored in the work buffer 10 to determine whether display is possible based on the reduction ratio and display image layout information. Then, the start page and the end page of the display are determined. 8 is displayed on the display screen 31 shown in FIG.
A page display image 32 is displayed, and a data cursor 34 is displayed on the page being edited in FIG.

FIGS. 11 and 12 show how the data cursor 34 is moved when a plurality of pages are displayed on the display screen 31 at the same time.

FIG. 11 shows the movement of decreasing the page number selected by the data cursor 34, and FIG.
Shows the movement of increasing the page number selected by the data cursor 34.

In FIG. 11A, it can be confirmed by the page number display section 33 that the respective display images 32 from the second page to the ninth page in the document are displayed on the display screen 31, and the data is displayed. The cursor 34 is located on the second page which is the first page displayed on the display screen 31. Here, when the data cursor 34 is moved to the left side toward the display screen 31, the display start page is decremented by 1 from the page number currently indicated by the data cursor 34, and the display start page and the end page are set again, Display the screen. In FIG. 11 (2), the page numbers of the display start page and the end page are each decremented by 1, and the first to eighth pages are displayed. Data cursor 34
Is above the first page, which is the first page in the screen. Even if it is attempted to move the data cursor 34 further leftward from this state, the data cursor 34 cannot be moved leftward because the pages before the first page do not exist in the document.

In FIG. 12A, display images 3 of the first to eighth pages in the document are displayed on the display screen 31.
2 and the data cursor 34 is displayed on the 8th page which is the maximum page displayed on the display screen 31. Here, the data cursor 34 is displayed on the display screen 3
When it is moved to the right toward 1, the display end page is incremented by 1 from the page number currently indicated by the data cursor 34 only when the 9th page and subsequent pages are present in the document, and the display start page is restarted. And the end page are set and the screen is displayed. FIG.
In 2 (2), the page numbers of the display start page and the display end page are each incremented by 1, and the second to ninth pages are displayed.
The data cursor 34 is located on the 9th page which is the maximum page in the screen. If there are more successive pages in the document,
By moving the data cursor 34 to the right toward the display screen 31, the display image 32 of the next page can be viewed. If the display end page is the last page in the document,
The data cursor 34 cannot be moved to the right.

The screen movement due to the movement of the data cursor 34 is limited only by the number of pages in the document, and by repeating the screen movement, the data in the document can be confirmed one after another only on the layout display screen.

In the document data processing apparatus 1 according to the present invention, when a plurality of pages are displayed at the same time, it is possible to replace the pages by selecting any two pages with the data cursor 34. Pages that are simultaneously displayed on the screen in one document can be exchanged regardless of the data amount of each page, and can be repeated many times.

FIG. 13 is a diagram showing how pages are replaced. 13, the same components as those in FIG. 10 are designated by the same reference numerals, and the description of each component will be omitted. FIG.
In (1), the layout display of a plurality of pages is displayed on the display screen 31.
The data cursor 34 is located on the second page. When the input means 3 decides to select the second page, a selection mark 38 indicating the original page to be replaced is displayed above the display image 32. Fig. 13 (2)
In the display image 32a of page number "2",
The selection mark 38 is displayed and the data cursor 34 is located on the 7th page. When the 7th page is selected as the replacement destination by the input to the input means 3, the data of the 2nd page and the data of the 7th page are replaced.

In FIG. 13C, the second and seventh pages displayed on the display screen 31 at the time of FIG. 13B are replaced with each other, and the original display image 32a of the second page is displayed.
The display image 32b of the original seventh page is moved to the position where the second page is displayed, and the original display image 32b of the seventh page is moved to the position where the second page is displayed. The data cursor 34 is displayed on the display image 32b which is the original 7th page selected last when the pages are replaced. Here, the document edit screen key 3 displayed on the function display unit 35
Select 9 to return to the document screen. What is displayed on the document edit screen shown in FIG. 13 (4) is the second page after the change in which the data cursor 34 was positioned before returning to the document edit screen.

FIG. 14 is a flow chart showing the processing performed by the page replacement processing described above. FIG.
As shown in (2), when the replacement source page and the replacement destination page are selected, the page replacement process is started.

First, in step u1, the page number of the replacement original page is acquired. Next, in step u2, the page number of the replacement page is acquired. Since the page number of the page to be replaced can be obtained, the data is moved for each data. Step u3
Then, the character data is moved, the ruled line data is moved in step u4, and the figure / image data is moved in step u5.

FIG. 15 is a flow chart showing the data movement process in the page replacement process described above. When the data movement preprocessing is started, a data movement preprocessing routine, which is a predetermined processing routine as step r1, is executed. The processing executed in the data movement preprocessing routine is shown in the flowchart of FIG.

In the data movement preprocessing routine, first, in step q1, the start address and end address of the replacement source page PA are acquired. Next, in step q2, the original page P is replaced from the acquired start address and end address.
Calculate the amount of data in A.

At step q3, the start address and end address of the replacement destination page PB are acquired. Then step q
As 4, the data size of the replacement page PB is calculated from the acquired start address and end address. Since the respective data amounts of the replacement source page PA and the replacement destination page PB have been acquired, the data movement preprocessing routine ends.

At step r2 of the flow chart of the data movement processing, the size of the data area AA in which the data DA of the replacement source page PA is stored and the size of the area AB in which the data DB of the replacement destination page PB is stored are compared. ing. If the area AA is larger than the area AB or if the areas AA and AB have the same size, the process proceeds to step r3. At step r3, the data D of the replacement original page PA
Move A to the save buffer 11. In step r4,
The data DB of the replacement page PB is moved to the area AA containing the data DA.

Next, in step r5, the sizes of the areas AA and AB are compared again. Area AA is area AB
If it is larger, the process proceeds to step r6. Since the area AA is larger than the data amount of the replacement destination page PB, even if the data DB of the replacement destination page PB is stored in the area AA, there is an area in which no data is stored in the area AA.

At step r6, the data of other pages which are not the target of page replacement are sequentially packed in the area not containing the data. Since the start address of each page is changed because the data is moved, the value of the start address designating pointer is changed in step r7. By the process of step r6, the areas without data are gathered in one place, and the area with the data DA can be created. Therefore, in step r8, the data DA stored in the save buffer 11 is filled with the data. It is moving to a non-existent area. Since the data stored in the save buffer 11 has moved, the save buffer 11 is cleared in step r9.

If the determination in step r5 is negative, the area AA has the same size as the area AB, so the process proceeds to step r8, and the data DA of the replacement source page PA that has been moved to the save buffer 11 is moved to the area AB. Let Since the data stored in the save buffer 11 has moved, the save buffer 11 is cleared in step r9.

When the determination in step r2 is negative, that is, when the area AB is larger than the area AA, first, in step r10, the data DB of the replacement destination page PB is moved to the save buffer 11. Next, in step r11, the area A in which the data DB of the replacement destination page PB was included
The data DA of the replacement source page PA is moved to B. Since the area AB is larger than the data amount of the replacement source page PA, there is an area where no data is contained in the area AB.

In step r12, the data of other pages which are not the target of page replacement are sequentially filled in the area where the data is not contained. Since the start address of each page is changed because the data is moved, the value of the start address designating pointer is changed in step r13. Step r
By the processing of 12, the areas not containing data are gathered in one place, and the area where the data DB can be entered is created. Therefore, in step r14, the data DB stored in the save buffer 11 is filled with data. It is moving to a non-existent area. Since the data DB stored in the save buffer 11 has moved, the save buffer is cleared in step r9.

The processing performed in the flowchart of FIG. 15 is divided into three cases. The processing in each case will be described with reference to the conceptual diagrams shown in FIGS.

FIG. 17 is a conceptual diagram of the page replacement process when the data amount of the replacement source page and the data amount of the replacement destination page are the same. As shown in FIG. 17 (1), the data D1 of the replacement page and the data D2 of the replacement page are the document buffer 9
It is stored in. In the document buffer 9, the data D1 is stored in the storage area A1.
The data D2 is stored in each of the storage areas A2.

As shown in FIG. 17B, the data D1 is moved from the area A1 to the save buffer 11. Data D
Since 1 and the data D2 have the same size, the areas A1 and A2 storing the respective data also have the same size. Therefore, as shown in FIG. 17C, the data D2 can be moved to the area A1, and no free area is generated in the area A1. Free space A2 generated due to movement of data D2
Since the size of the data D1 is the same as the size of the data D1 stored in the save buffer 11, the data D1 can be moved to the area A2 as shown in FIG. 17 (4).

FIG. 18 is a conceptual diagram of the page replacement process when the data D11 of the replacement source page is larger than the data D12 of the replacement destination page. As shown in FIG. 18A, the data D10 including the data D11, D12, and D13 is stored in the area A10 of the document buffer 9. Further, the data D11 is stored in the storage area A11, and the data D12 is stored in the storage area A12.
Data D13 of a page that is not designated for page replacement is stored in the area A13. When the replacement of the replacement source page and the replacement destination page is instructed, the larger data D11 is moved to the save buffer 11 as shown in FIG. 18 (2). Area A where data D11 was stored
Since 11 is larger than the data D12, FIG.
As shown in (3), the data D12 can be moved to the area A15 in the area A11, but the area A11 has an area A16 containing no data.

Therefore, as shown in FIG. 18D, the empty area A16 is sequentially filled with the data D13, and the area A12 is filled.
And area A16 are added to create area A17. Since the data D13 has moved, the stored area also changes, and the data D13 is the area A1 following the area A15.
8 is stored. Since the size of the area A10 has not changed, the size of the area A17 is the same as the area A11. Therefore, since the data D11 can be stored, the data D11 is moved to the area A17 as shown in FIG. 18 (5).

FIG. 19 is a conceptual diagram of the page swapping process when the data D22 of the swapping destination page is larger than the data D21 of the swapping original page. As shown in FIG. 19 (1), the data D20 including the data D21, D22, and D23 is stored in the area A20 of the document buffer 9. Further, the data D21 is stored in the storage area A21,
The data D22 is stored in the storage area A22. The data D23 of the page that is not designated for page replacement is the area A
23. Here, when the replacement of the replacement source page and the replacement destination page is instructed, the larger data D22 is moved to the save buffer 11 as shown in FIG. Area A22 where data D22 was stored
Is larger than the data D21, the data D21 is stored in the area A25 within the area A22 as shown in FIG.
However, an empty area A26 containing no data is formed in the area A22.

Therefore, as shown in FIG. 19D, the empty area A26 is sequentially filled with the data D23 to obtain the area A21.
And area A26 are added to form area A27. Since the data D23 has moved, the stored area also changes, and the data D23 is the area A28 following the area A27.
Stored in. The storage area of the data D21 is the area A22.
The area A25 is obtained by subtracting the size of the area A26 from. Since the size of the area A20 has not changed, the size of the area A27 is the same as that of the area A22. Therefore, the data D22 can be stored, so that the data D22 in FIG.
The data D22 is moved to the area A26 as shown in FIG.

As described above, according to this embodiment, it is possible to display a plurality of pages at the same time, and it is possible to perform the page replacement process while simultaneously displaying a plurality of pages. Further, other pages that cannot be simultaneously displayed on one screen can be checked one after another without having to end the layout display screen once and redesignate the page to be displayed because the screen can be scrolled. Therefore, the layout of a plurality of pages in a document can be easily compared and the pages can be easily replaced, and the work efficiency can be improved.

In this embodiment, the reduction ratios shown in Table 1 are used, but when the device used as the display means is changed, the reduction ratio value is also newly set. Similarly, in the layout diagram of the display layout 32 shown in FIG. 9, the setting changes depending on the device.

In the present embodiment, the processes that can be executed when a plurality of pages are displayed simultaneously have been described individually. However, while the layout display is being performed, each process in one document is performed. Can be done after any processing.

[0076]

As described above, according to the present invention, a plurality of pages can be displayed at the same time, so that it is possible to compare each page in a form that is actually printed.

According to the present invention, the pages can be replaced by designating any two pages by the designating means while a plurality of pages are displayed at the same time, so that the page data can be easily replaced in the document data. You can do it.

Further, according to the present invention, the page data can be changed only by instructing the change of the page data being displayed by the instructing means while simultaneously displaying a plurality of pages.
There is no need to interrupt the layout display and specify the page again.

[Brief description of drawings]

FIG. 1 is a basic block diagram of a document data processing apparatus that is an embodiment of the present invention.

FIG. 2 is a diagram showing a data structure of a document buffer 9.

FIG. 3 is a diagram showing a data storage format of format information.

FIG. 4 is a diagram showing a storage format of bitmap image data.

FIG. 5 is a flowchart showing a process for simultaneously displaying a plurality of pages.

6 is a diagram showing a storage format of each data in the document buffer 9 and a storage format of a start address for each page of each data in the start address instruction pointer table 21. FIG.

FIG. 7 is a diagram showing a state in which a plurality of pages are displayed simultaneously and a storage format of a page data storage table 40.

FIG. 8 is a flowchart showing processing performed in preprocessing.

FIG. 9 is a diagram showing an arrangement example of a display image 32.

FIG. 10 is a diagram showing a change in screen until layout display of a plurality of pages is performed.

FIG. 11 is a diagram showing a state of movement for decreasing the page number selected by the data cursor.

FIG. 12 is a diagram showing a state of movement for increasing the page number selected by the data cursor.

FIG. 13 is a diagram showing how pages are replaced.

FIG. 14 is a flowchart showing a process performed in a page replacement process.

FIG. 15 is a flowchart showing a data movement process in the page replacement process.

FIG. 16 is a flowchart showing a data movement preprocessing.

FIG. 17 is a conceptual diagram of page replacement processing when the data amount of a replacement source page and the data amount of a replacement destination page are the same.

FIG. 18 is a conceptual diagram of page replacement processing when the data amount of the replacement source page is larger than the data of the replacement destination page.

FIG. 19 is a conceptual diagram of page replacement processing when the data amount of the replacement page is larger than the data of the replacement source page.

[Explanation of symbols]

 1 Document Data Processing Device 2 Main Body 3 Input Means 4 Display Means 5 Control Means 6 Storage Means 7 Character Generator 8 Bitmap Image Storage Buffer 9 Document Buffer 10 Work Buffer 11 Evacuation Buffer 21 Start Address Pointer Pointer Table 31 Display Screen 32 Display Image 33 page number display section 34 data cursor 35 function display section 36 layout display execution key 37 display page number input void 38 selection mark 39 document edit screen key 40 page data storage table

Claims (3)

[Claims] 1. A document data storage unit for storing, as page data, print data to be printed in a predetermined format on a sheet of a predetermined size and storing document data composed of a plurality of page data arranged in a predetermined order, and a document. Display means for displaying data in page data units, selecting means for selecting the number of page data to be simultaneously displayed on the display means, output of the selecting means, and display means based on the predetermined paper size and format. Arrangement of page data to be displayed,
And a display control means for determining a reduction ratio. 2. The display control means includes a designation means for designating two page data out of the page data displayed on the display means, and the display control means determines the display position of the two page data designated by the designation means. 2. The document data processing apparatus according to claim 1, wherein the order is changed and displayed, and the order of two designated page data in the document data stored in said document data storage means is exchanged. 3. The display control means includes an instruction means for instructing a change of page data displayed on the display means, and the display control means determines that the number of page data forming document data is the page data displayed on the display means. 2. The document data processing apparatus according to claim 1, wherein the page data to be displayed is changed in response to an instruction from the instructing means when the number is larger than the number.