JPS63187331A - Data displaying system by multi-window - Google Patents

Abstract

PURPOSE:To display a reduced picture of high quality by editing a data which is brought to an enlargement/reduction processing by each different method in accordance with a kind of data such as a character, a graphic, an image, etc. constituting a document picture and preparing a whole layout picture. CONSTITUTION:As for a character part in a whole layout picture, whole font is the nearest to a size of a reduced character is selected among plural kinds of fonts of different sized prepared in advance referring to a table, etc., for instance, and it is enlarged or reduced. A graphic part is stored in a form of vector information of a coordinate, a direction of a segment, a radius of a circle, etc., and as for a graphic reduction processing, the reduction processing in a stage of vector information such as, reduction of a coordinate value etc., for instance, is performed. Also, an picture part is reduced by a thinned-out processing of a picture element on an image which is brought to a bit development. In such a way, each of part which is brought to a reduction processing in accordance with a kind of data is edited, developed to a bit map memory, and displayed as a whole layout picture 1. As for a partial image 2, each data part is edited by a size of an original document and displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multi-window data display system, and particularly to a display system suitable for interactive document processing.

[Conventional technology]

The conventional multi-win I shoe device develops the entire document data on an image memory and displays it in parallel when displaying an image showing the entire layerer 1~ of the document data and a detailed partial image in parallel. By reducing the size at a predetermined ratio, an image showing the entire layout 1~ is created and displayed in a window.

[The point that the invention is trying to solve]

However, in the conventional technology, no consideration is given to the image quality of the overall layout image of document data.
If you create an overall layout image at a high reduction rate in order to display a large document in a window of a certain size, the text may become blurred and unreadable, or some of the shapes drawn with thin lines on the original document may be cut out. There was a problem in that inconveniences such as falling and disappearing occurred.

An object of the present invention is to divide document data in which one character, one figure, two images, etc. are mixed into an entire layer image with no missing information, and a partial image that displays a part in detail, and to display the document data in parallel. An object of the present invention is to provide a document data display method that allows efficient data interaction processing.

[Means for solving problems]

In order to achieve the above object, in the present invention, when creating a reduced image showing the entire layout of document data, character 9
Data with mutually different properties, such as graphics 9 images, are enlarged/reduced independently for each type of data. For example, for one character data, prepare multiple types of fonts with different sizes for each character code in advance, and use the entire layout image (
Image after reduction) Select the character font closest to the size of the characters above and scale it to obtain the final image. Furthermore, for graphic data defined by vector information such as coordinates and line widths, the final image is obtained by scaling the vector information.

[Effect]

According to the present invention, by changing the reduction processing for obtaining the entire layout screen according to the type of data composing the document image, it is possible to reduce the amount of clutter in the text portion and eliminate thin lines in the graphic portion. It is possible to display a reduced image with high image quality without any loss of image quality. Furthermore, in the present invention, since data having different properties such as characters, figures, and images are treated independently of each other, only the image data is required to be developed into a bitmap as an image for processing during reduction. Therefore, compared to the conventional method in which the entire Go document is expanded into a bitmap and then reduced, the image memory used can be made smaller.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 conceptually shows the gist of the present invention. In the figure, 1 is the entire layout image of a document consisting of three types of data: 9 characters, 9 figures, and 9 images, and the portion corresponding to the broken line frame 3 in the overall layout image 1 is displayed in parallel on the screen as partial image 2. There is.

For the text part in the overall layout image, select one of several pre-prepared fonts of different sizes, for example by referring to a table, etc., and select the font closest to the reduced text size. Scale this up or down. The figure part is the coordinates and direction of the line segment.

It is stored in the form of vector information such as the radius of a circle, and the graphic reduction process is performed, for example, at the stage of the vector information of the hat, which reduces the coordinate values. Further, the image portion is reduced by pixel thinning processing on the bit-expanded image. In this way, each part that has been reduced according to the type of data is edited, developed into a bitmap memory, and displayed as overall layout 1 to image 1. In the partial image 2, each data portion is edited and displayed in the size of the original document.

FIG. 2 shows an example of the overall configuration of a processing device implementing the present invention. In the figure, 21 is a processor, 22 is a main memory that stores programs, data tables, etc., 23 is an input keyboard, 24 is a file device that stores document data of 9 characters, 9 graphics, and 2 images, and 25 is a font-developed character or image. , or a device for enlarging and reducing graphic data of vector information at a specified magnification, 26 a segment buffer for storing data and instructions for editing document information, 28 a display, 27 holding bit data to be displayed. A bitmap memory 29 is a font memory that stores a plurality of types of character fonts of different sizes.

For example, a search table shown in FIG. 3 is prepared in the main memory 22. The search table stores the document name, data storage address, data length, etc. necessary for searching each document data stored in the file device 24.

Each document data stored in the file device 24 is composed of format information, nine character data, graphic data, and image data, as shown in FIG. 4, for example. The format information defines the format of the document, such as character pitch (row and column spacing), top, bottom, left and right margins, and document size such as A4 and B4. The character data section includes the code storage address of the character to be displayed, its data length, character size specifications such as 24 x 24 dots, ], 6 X] - 6 dots, and data indicating the position of the document. .

The figure data section contains the storage address of information such as the coordinates of vertices and the direction of line segments that define each figure, its data length, and data indicating the position on the document that is used as a reference when drawing the figure. include. The image data section includes data indicating the storage address of the image data consisting of the density value of each pixel, the M1 horizontal size of the data length 2 image, and the position on the document.

FIG. 5 shows an example of a screen definition table prepared in the main memory 22 to define the screen configuration of the display 28. This screen definition table describes the position and size on both sides of each window for displaying the partial image 2 and the entire layout image 1, and the cutout of the visible area of the document data displayed in each window. Defines the location.

FIGS. 6 and 7 are explanatory diagrams of parameters set in the screen definition table. In FIG. 6, 60 indicates a display screen, and 61 indicates a displayed window. The position of the window 61 is indicated by coordinates (x, y) with the upper left corner of the screen 60 as the origin. 70 in FIG. 7 indicates the entire document, and 71 indicates a partial area (
(cut out part) is shown. The position of the cutout portion 71 is the coordinate (s, t) with the left-I corner of the document 70 as the origin. Here, the size of the window 61 and the cutout portion 71 are equal.

FIG. 8 shows a flowchart of image display processing according to the present invention, which is realized using the above data. This process consists of steps 101 to 111 below.

Step 101: Display 28 from keyboard 23
Enter the name of the document data to be displayed.

Step] 02: Search table on main memory 22 (third
2) and read the storage address of the corresponding document data.

Step 103: Read the corresponding document data (Fig. 4) from the file device 24, and match the characters to the stored character codes on the segment buffer 24 by referring to the character size specification and the position of the document. Generates character font expansion instructions.

The figure is subjected to processing such as coordinate transformation with reference to the drawing base 7<1i position, etc., and a figure drawing command is generated. Furthermore, an image drawing command is generated based on the position and size of the image. These commands are edited and made into document data 70.

Step 104: The document data 70 on the segment buffer 26 is subjected to clipping processing at the portion corresponding to the cutout portion 71, and the data is stored in the p1 to map memory 27.
Display data is written according to the position and size determined in the screen definition table (Fig. 5). Thereby, partial image 2 can be displayed. Here, if you want to change the display content or size of partial image 2, just input the size and cropping position parameters in the screen definition table shown in Figure 5 using the keyboard, etc., and reset them. .

Step 105: Select whether to display the entire image 1 showing the entire layout of the document. If it is not displayed, the process ends.

Step 106: From the keyboard 23 etc., the whole image 1
Enter the horizontal and vertical dimensions of the window that will be displayed. At the same time, the size of the document is checked from the format information of the document data (FIG. 4), and the ratio between the size of the document and the size of the entire display window is determined. At this time, this ratio α represents the height of the document data as I]. ,W on the side. When binding, let the height of the entire display window be 2 and the width be W, then h 1/ho and w 1. /w Obtain as the smaller of O. Furthermore, the vertical and horizontal dimensions of the screen definition table (Fig. 5) of the entire display window are set to aX (h 1/
h o) + aX (w3./wo>).

This expansion determines the size of the entire display window and the reduction rate α of one document data.

Step 107: From the reduction ratio α determined in process 4.06 and the character size of the document data (FIG. 4), the size of the reduced character is determined as (character size Xα). In addition, the font memory 29 is prepared with multiple phono 1s of different sizes such as 24 x 24 dots, 16 x 16 dots, 12 Select a text font and enlarge or reduce it.

For example, if a font of size n is selected, the character size of the entire image will be phono 1~ of size n multiplied by (character size Xα)/n. The scaling processing section 25 performs the scaling processing on the font read from the font memory 29 by using the font as an image on the segment buffer 26 by thinning out pixels or using various interpolation algorithms. Furthermore, the font size and position of the document data (Figure 4) are multiplied by α, and each is reduced to 4-
The size and position of the characters in the font image. Furthermore, the storage address and data length of this reduced font image on the segment buffer 26 are calculated, and an image drawing command is generated on the segment buffer 26.

Step I08: From the reduction ratio α obtained in process 106 and the storage address of one document data (FIG. 4), vector information such as the coordinate value of the figure stored at the address indicated by the storage address and the radius of the arc is extracted, The data of the reduced figure is obtained as (data x α). At this time, attribute information such as line width and line color is not changed. In addition, document data (fourth
Multiply the position of the figure in Figure) by α to find the position of the reduced figure.

In this way, graphic data for the reduced image is obtained, and graphic drawing commands are generated in the segments 1 to 26.

Step 109: Based on the reduction ratio α obtained in process 106 and the storage address of the document data (FIG. 4), the image data stored at the address indicated by the storage address is extracted. The extracted image data is reduced by α times on the segment buffer 26 by the enlargement/reduction processing unit 25. In addition, the size and position of the image in the document data (Fig. 4) are multiplied by α to obtain the size and position of the reduced image, the data length is also calculated, and the storage address of the reduced image on the segment buffer 26 is calculated. Calculate. Then, an image drawing command is generated on the segment buffer 26.

Step 110: Process 107. Processing 108. Processing 1]
, O, each command newly generated on the segment buffer 26 is edited, and the document data 70 of the entire image 1 is created.

Step 111: Display data for the document data 70 of the whole image 1 generated in the process 110 according to the position, size, and cropping position determined in the screen definition table (Fig. 5) of the whole display window obtained in the process 106. Write. Thereby, the entire image 1 can be displayed. At this time, the cutout position of the screen definition table (FIG. 5) of the entire display window is φ both vertically and horizontally. Furthermore, the designation of the display position may be fixed by the system or may be changed by input.

When the entire image 1 is generated by performing the above processing, the 9th
There are effects as shown in the figure. 91 is an original image corresponding to the partial image 2, and 92 is an entire layout image (reduced image) according to the present invention, which corresponds to the entire image 2. Reference numeral 93 is an entire layout image (reduced image) obtained by a conventional method in which the entire document is converted into image data and then subjected to reduction processing.

For example, in the conventional method, the image of a thin line 94 with a line width of 1 pixel that exists in the original document is reduced by a method such as pixel thinning, so that the thin line 94 disappears from the display screen. . Also, in the text portion, the reduction ratio is large, so the text is blurred. However, according to the present invention, the character part 1, figure part, and image part of the original image 91 are each subjected to optimal reduction processing, so that the reduced image 92 is clear and has no omissions.
is obtained. For example, the character part is 8×8 dots, 1.2X
1. Prepare multiple types of fonts such as 2 dots, 16 x 16 dots, and 24 x 24 dots, and create a reduced image 92.
The font size to be displayed is calculated from the reduction ratio of , and the font closest to that size is selected. For example, if the calculated display font size is 13 x 13 dots, select a font with a size of 12 x 12 dots, which is close to this, and reduce or enlarge the character pattern generated using this font to create characters of the display size. obtain. In the above example, 12X
Characters obtained from a 12-dot font are enlarged to 13/12 times. In this way, when a character font close to the final display character is used, the magnification for enlargement or reduction can be small, and blurring of the characters can be suppressed. Normally, the size of the font used in word processors etc. is 24 x 24 dots, but if you also prepare 16 x I 6 dot and 8 x 8 dot fonts, the overall size will be reduced to 1/4 to 3/4. In the reduced document, the text is 3/3 of the font used.
It can be obtained by enlarging and reducing at a small magnification of 4 to 5/4.

In addition, the figure section holds data in the form of flat information such as coordinate points and the radius of circular arcs, and performs reduction processing at the stage of the round information, such as a circle with a radius of 20. In the 1/2 scaled figure, by setting the data value of the radius to 10 and leaving the attributes such as the width and color of the line segments as the original size data, it is possible to obtain a drawn figure with no missing line segments.

〔Effect of the invention〕

According to the present invention, when creating a reduced direct image showing the entire layerer 1~ of document data, the data of the character part is selected from a plurality of types of character phonographs 1~ prepared in advance, and the character size of the reduced image is By selecting the character font that is closest to the original character and reducing it, and by reducing the shape data while keeping the vector information, you can create high-quality images without blurring the characters or missing fine lines in shapes or ruled lines. You can get the image.

In addition, because independent reduction processing is applied to data with different properties such as two characters, two figures, and two images, there is no need to retain the entire image of the original document, the image memory can be made smaller, and images of the same size can be Using memory has the advantage of being able to process large document images.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining the concept of the data display method according to the present invention, FIG. 2 is a block diagram showing the overall configuration of a processing device for implementing the present invention, and FIG. 3 is a diagram showing one part of the search table.
Figure 4 is a diagram showing an example of the structure of document data stored in the sentence 7 file. Figure 5 is a diagram showing an example of the screen definition table. Figures 6 and 7 are Figure 8 is a flowchart showing an example of a control processing procedure; Figure 9 is a diagram for explaining the relationship between parameters used for screen definition and images;
The figure is a diagram showing an example of a display screen for explaining in detail the present invention in comparison with a conventional method. 21-Processing device, 22... Main memory, 23... Keyboard, 24-... File device, 25... Enlarging/reducing processing section, 26... Segment 1 hepasofa, 27゛ Bit map memory, 28 ...Display, 29 Font memory. Do〉＼ ,ノ□□〆3rd country Figure 4(,i
W 3rd eye

Claims (1)

[Claims] 1. Set up multiple windows on the display screen,
In a multi-window data display method that simultaneously displays a reduced image showing the entire layout of a document image and an image corresponding to a portion of the document image,
A multi-window data display method characterized in that the overall layout image is created by editing data that has been enlarged or reduced in different ways depending on the type of data such as characters, figures, images, etc. that make up the document image. .