JPH07104858B2 - Document data processor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] Regarding processing of document data for displaying character strings of various typefaces, sizes and display forms on a display device, display attribute control data for each character is Displaying character strings according to specified display attributes for the purpose of a document data processing device that is easy to change, add, and delete, requires a small amount of memory, and is easy to control in accordance with international standards such as ISO-CGI. In a system that processes document data for display on a display device,
In the document data, a logical segment management block corresponding to each logical segment obtained by dividing the character string according to a predetermined condition, and a logical segment management block instructed by each logical segment management block, are provided for each line in the logical segment, and are mutually provided. Holds chained row management blocks, one or more coordinate control blocks and one or more character attribute control blocks that are instructed by each row management block and are chained to each other, and character codes of characters that form the character string. Code table
Each of the coordinate control blocks holds in-line relative display position information of a desired character, and each of the character attribute control blocks applies the display attribute information of a predetermined format and the display attribute defined by the display attribute information. It is configured to hold information indicating a character string on the table.

[Industrial application field]

The present invention relates to a document data processing apparatus for displaying character strings of various typefaces, sizes and display forms on a display device.

[Problems to be Solved by Conventional Techniques and Inventions]

When processing document data that is to be displayed as a character string in which characters of different character sizes and typefaces are mixed, such document data needs to determine all display attributes for each character. A structure having display attribute information that specifies the display attributes corresponding to each character code of each character is generally used.

On the other hand, document data that enables the output of high-quality printed matter,
Display on the CRT display etc. of the display device in the same way as the print result,
In order to satisfy the requirements of so-called WYSIWYG (What you see is what you get), not only the typeface, height, etc., but also the thickness of characters, surface painting, shadowing, italics, minute character position designation, Since other designations are required and the display attribute information becomes large, the above structure poses a problem of enormous storage capacity of document data.

In addition, in order to perform the detailed character string display as described above, it is necessary to enable not only the control based on the line and the column position but also the display function equivalent to the graphic even for the character. In that case, for example, it is desirable to configure the document data so as to be easily controlled by an interface with a display device according to the well-known ISO-CGI graphic device function set which is an international standard of the International Organization for Standardization.

In the ISO-CGI graphic device function set, information on display is divided into segments, each information such as display position, graphic, and size is managed as an element in the segment, and the element is identified by the segment identification name and the element number in the segment. It is possible to specify, change, add, delete, etc. for each element, and when the attribute information is notified to the display device, the device side retains the segment for the element with the same content as the previous graphic unit element. By doing so, notification can be omitted for the next graphic unit.

The present invention is a document data processing that configures document data such that the display attribute control data for each character can be easily changed, added, deleted, the required memory amount is small, and the control according to the ISO-CGI or the like is easy. Intended for the scheme.

[Means for Solving the Problems]

 FIG. 1 is a block diagram showing the configuration of the present invention.

The figure shows the structure of document data, 2 is a logical segment management block for each character string that is instructed from the page management block 1 for each page, and is delimited by a predetermined condition, 3 is a logical segment management for each line A line management block designated by the block 2 is a coordinate control block 4 which is in the control block chain designated by the line management block 3 and which indicates a display position of a character string, and 5 is a coordinate string which is in the same chain and its display attribute Is a character attribute control block that holds information designating the character string, and 6 is a code table that holds a character string.

[Work]

In a document data processing device for processing document data to be displayed on a display device, a logical segment management block 2 corresponding to each logical segment obtained by dividing a character string to be displayed by, for example, forced line feed within a page, and each logical segment management block A line management block 3 provided for each line of a character string is connected to a chain designated by 2, and one or more coordinate control blocks 4 and a character attribute control block 5 are connected to each control block chain designated by each line management block 3.
Also, each character code is held in the code table 6.

Each coordinate control block 4 holds relative display position information 44 within a line for starting display of a desired character, and for each of one or more character strings to be sequentially displayed from that, each character attribute control block following the coordinate control block 4. 5, the document data is configured such that display attribute information 54 to 56 in a predetermined format and information 58 and 59 indicating a character string on the code table 6 to which the display attribute should be applied are held, and this document data is stored. The data is held in the document data holding means of this device.

When displaying a desired line, the processing means of this device sequentially searches the logical segment management block 2 and the row management block 3 designated by the logical segment management block 2,
The row management block 3 of the required row is determined.

Next, in the chain of the coordinate control block 4 and the character attribute control block 5 designated by the line management block 3, the character code string on the code table 6 designated by each character attribute control block 5 is added to the character attribute control block. The command generated by adding the display control information generated based on the display attribute held in the display and the display position information on the display device generated from the coordinates of the coordinate control block 4 is output to the display device, and the character of the line is displayed. Display columns.

With the above document data configuration, display attributes are collectively held for each character string having the same attribute, so the data amount is compressed to the required minimum, and with the above chain configuration,
Change and addition / deletion of character codes and attribute information can be locally processed, and the above-mentioned configuration facilitates correspondence with the element number within a segment such as ISO-CGI.

〔Example〕

According to the present invention, the document data is configured as shown in FIG. 1 corresponding to each page of the document, for example.

In FIG. 1, the page management block 1 is control information that serves as a route for accessing all document data in one page by following a link from here.
Holds the number of logical segments in a page, the segment start pointer of item 11 indicates the head block of the chain of the logical segment management block 2, and the segment end pointer of item 12 indicates the end block of the chain of the logical segment management block 2. Give instructions.

Each logical segment management block 2 designated by the page management block 1 sequentially designates the logical segment management block 2 by the next pointer of item 20 to form a chain.
Further, for convenience of chain update processing, the chain is linked in the reverse direction by the front pointer in item 21.

A one-page document is divided into logical segments with, for example, forced line breaks (line breaks specified by the creator of the document being intentionally inserted) as delimiters, and logical segment management is performed for each logical segment thus delimited. Block 2
And the logical segment is identified by the segment identifier in item 22.

Each logical segment management block 2 indicates the number of lines of the logical segment by the number of lines in item 23, the head block of the line management block 3 by the head line pointer of item 24, and the end of the chain by the last line pointer of item 25. Instruct a block.

Each row management block 3 designated by the logical segment management block 2 sequentially designates the row management block 3 by the next pointer of item 30 to form a chain. For convenience of chain update processing, the chain is linked in the reverse direction by the previous pointer in item 31.

The line management block 3 is provided for each line of the logical segment, and uses the control block pointer of Item 32 to instruct the control block chain that holds the control information related to the character string of that line. It shows the aggregated value of the numbers, the absolute coordinate of item 34 indicates the coordinate on the display surface of the beginning of the line, and the first character of the character string of this line held in the code table 6 by the line code pointer of item 35. Instruct the code.

In addition, if necessary, as the unique information for each line after item 36, the instruction information about the beginning of the line, the prohibition process at the end of the line, the line descent, etc. is held.

The control block chain designated by the item 32 of the line management block 3 is constituted by connecting a required number of coordinate control blocks 4 and character attribute control blocks 5.

The coordinate control block 4 specifies the start display position of a character string within a line, that is, the start display position of a character string at the beginning of a line and a character string after a blank space continues in the line.
It is a control block shown as in-line relative coordinates that are relative to the absolute coordinates of the above item 34 by the relative coordinates of item 44, the type of block is indicated by the display of the coordinate control block of item 40, the next pointer of item 41 and the previous pointer of item 42 Constructs a link in both forward and reverse directions of the control block chain.

Item 43 is an in-line element number, and the element number of the relative coordinates of item 44 is shown as an in-line relative number. Here, the element is a unit of control information transmitted / received in an interphase using a segment with the display device.

That is, the coordinate of the character string display position, the typeface, the bold face, the face paint, and other various attribute values that form display attributes described below are each one element, and the character code string of one character string is also one element. In the case of the above ISO-CGI, etc.,
The element is managed by the element number in the segment (hereinafter simply referred to as the element number), and the display device can identify the element by the element number. Therefore, by designating the element number, the change, deletion, and deletion of the element sent to the display device can be performed. Since processing such as addition of elements can be executed by local processing, partial change of display can be efficiently processed.

The character attribute control block 5 is the coordinate control block 4 or the preceding character attribute control block 5 on the control block chain.
From the coordinate position specified by the preceding coordinate control block 4 or the coordinate position following the end of the character string specified by the preceding character attribute control block 5 It is a control block showing the display attribute, the type of the control block is shown by the display of the character attribute control block of item 50, and the next pointer and the previous pointer of items 51 and 52 are the pointers forming the reverse link as described above. .

The in-line element number of Item 53 indicates the in-line element number for the first element of the elements notified to the display device as described later among the internal attribute bundles held in Item 54, and the internal attribute bundle of Item 54 is Item 58. , 59 contains the display attribute of the character string indicated by 59, and holds the specified information for all the elements required as the display attribute.

However, when displaying on a display device according to ISO-CGI,
Since the notification of the same attribute value as the attribute notified by the preceding character attribute control block 5 can be omitted, the elements with different attribute values can be specified.
In the element information of 56, for example, it is shown in a bit corresponding format, the number of corresponding elements is shown by the number of elements of the item 55, and by configuring the display attribute information in this way, the display attribute of the character string in only this block You can know all about
It facilitates the control of notifying only the necessary attribute information to the display device.

Item 57 is the inline element number given to the character string specified in Item 58, 59, and, as described above, Item 58, 59 is the specification of the character string to which the internal attribute bundle of this control block is applied. The code table index of Item 58 indicates the first character code of the character string on the code table 6, and the number of codes of Item 59 specifies the length of the character string (the number of character codes).

The code table 6 is a table in which the character codes in the document data are arranged in the order of appearance, and the code field has a character code and the internal attribute field has attribute information for each character such as an underline that modifies the character.

FIG. 2 (a) is a diagram showing a configuration example of the internal attribute bundle of item 54 of the character attribute control block 5, and in the example of the figure, the display attribute of the character string is designated by the information of 11 items. ,
Each information is compressed and held in 2-byte index information to reduce and hold the required memory amount, and when notifying to the display device, it is restored to a predetermined command code and notified.

In the information of the internal attribute bundle shown in FIG. 2 (a), the character string typeface index is an index that specifies one of over 20 types of typefaces such as Mincho typeface, Gothic typeface, various European typefaces, and half-width typefaces thereof. . Also, the bold setting index specifies the thickness of the lines that make up the character, the character surface coating index specifies the solid filling of the character line, the white outline, etc., the shadowing index indicates the presence or absence of the shadow line of the character, and the italic index indicates Various italicized designations, the character alignment index is the designation of the rotation direction and orientation of the characters, and the character display index is the information indicating the transparency and non-transparency of the display of the overlapping part. It corresponds to 1 to 3 command elements to the display device.

Character height is the character height, character width ratio is the ratio of width to height, character spacing 1 and character spacing 2 are the display intervals of the characters, and character spacing is the character spacing specified by the document creator. Reference numeral 2 denotes a character space assigned to fill a space resulting from prohibition processing or the like.

FIG. 2B shows a configuration example of the element information of item 56, and 11 bits of 2 bytes correspond to each item of FIG. 2A as shown in FIG. Attribute inherited from preceding character attribute control block with bit value "0", bit value "1"
The attribute to be changed is indicated by, and the presence or absence of the changed attribute in the 11 items is generally indicated by the bundle index bit at the left end.

Therefore, the number of elements of the item 55 indicates the number of bits (excluding the bundle index) of the bit value "1" in the element information of FIG. 2 (b).

The document data processing device holds the document data having the above-described structure in the document data holding means, and the processing means issues a command for displaying the required document on the display device with reference to the document data. .

As is apparent from the link relationship between the control blocks of the document data and the meaning of the information of each block item described above, the processing of the processing means refers to the document data when displaying a certain line, Logical segment management block 2,
The row management block 3 designated by the logical segment management block 2 is sequentially searched to determine the row management block 3 of a desired row, and then the coordinate control block 4 and the character attribute designated by the row management block 3 are determined. Display control information generated based on the display attribute held in the character attribute control block in the character code string on the code table 6 instructed from each of the character attribute control blocks 5 in the chain of control blocks 5, and coordinate control. A command generated with the display position information on the display device generated from the coordinates of the block 4 is output to the display device to display the character string of the line.

At this time, in the present embodiment, as described above, the coordinate information to be instructed, the display attribute information, the character code string, etc. are each assigned the inline element number shown in the corresponding item of each control block and transferred to the display device. As described above, by specifying the element number and giving a necessary instruction later, it is possible to easily make a change locally.

Further, in the present embodiment, as described above, the display attributes instructed by each character attribute control block 5 are succeeded to the succeeding positions. Therefore, naturally, in the processing of each character attribute control block 5, the display attribute shown in FIG. The command is issued according to the attributes specified in the internal attribute bundle 54 only for the attributes that are shown to be different from the preceding by the element information 56 of the described contents.

〔The invention's effect〕

As is apparent from the above description, according to the present invention, the display attribute information of the character string is changed in the processing of the document data for displaying the character string having various typefaces, sizes and display shapes on the display device. Since the document data is configured so that it can be easily added and deleted, the required memory amount is small, and the control according to the international standard ISO-CGI, etc. is easy, the processing efficiency of the document data processing system can be improved and the economy can be improved. There is a remarkable industrial effect of improving the sex.

[Brief description of drawings]

 FIG. 1 is a block diagram showing the configuration of the present invention, and FIG. 2 is a diagram illustrating the configuration of an internal attribute bundle and the like. In the figure, 1 is a page management block, 2 is a logical segment management block, 3 is a line management block, 4 is a coordinate control block, 5 is a character attribute control block, 6 is a code table, 20-25, 30-36, 40- 44, 50 to 59 indicate items.

Claims (1)

[Claims] 1. A device for processing document data of a document to display a character string of the document on a display device for displaying the character string of the document at a specified display position according to a specified display attribute, A character string composed of one or more characters having the same character attribute, a line composed of one or more character strings, and 1
A code table (6) showing a string of character codes of the characters forming the character string for each of the necessary character strings divided into the above logical segments, and a logical segment for each logical segment Management block (2), row management block (3) for each row, character attribute control block (5) for each character string in the row, and necessary coordinate control block (4) for each character string And all the logical segment management blocks (2) of each said page
Chaining the row management blocks (3) of all the rows of each logical segment, and pointing the beginning of the chain with the pointer of the logical segment management block (2) The character attribute control block (5) and the coordinate control block (4) are chained, and the head of the chain is designated by the pointer of the line management block (3). Information (58, 59) indicating a position for holding a required character code string of the character string on the code table (6), and information (54 to 56) indicating a display attribute to be given to the character string. And each of the coordinate control blocks (4) holds document data holding means for holding as the document data data that holds the coordinates (44) indicating the in-row relative display position of the continuous character string, The logical segment management block (2 , The row management block indicated by the logical segment management block (3)
Are sequentially searched to determine the row management block of the required row, and each character attribute control of the chain of the coordinate control block (4) and the character attribute control block (5) instructed by the row management block Display control information generated based on the display attribute held in the character attribute control block in the character code string on the code table (6) designated by the block, and the display device generated from the coordinates of the coordinate control block. A document data processing device, comprising: a processing unit that outputs a command generated with the above display position information to the display device to display the character string of the line.