Screen display system

[Name of invention]

Screen display method and device

[Brief Description of Drawings]

1 is a block diagram showing the configuration of an apparatus for displaying mixed mode data according to an embodiment of the present invention;

Fig. 2 is a diagram for explaining the structure of a character data table;

Fig. 3 is a flowchart for explaining a process for displaying a rotating screen as it is in character standing;

Fig. 4 is a view for explaining an example of rotating a document created in the vertical and longitudinal direction on the screen as it is in character orientation step by step;

5 is a flowchart illustrating the processing operation of another embodiment of the present invention for rotating ruled lines and graphic data prior to developing them into a dot matrix;

Fig. 6 is a flowchart for explaining the processing operation of another embodiment of the present invention in the case of controlling the presence or absence of rotation for each character;

FIG. 7 is a diagram illustrating, step by step, an example of rotating a screen of a document created in the vertical and longitudinal direction by rotating only some characters; FIG.

Fig. 8 is a view for explaining a method of displaying image data and graphic data in an upright manner;

* Explanation of symbols for main parts of the drawing

101 : control unit 102 : document data file

103 : file input/output unit 104: layout control unit

105 : Text editing unit 106: Ruled line editing unit

107 : graphic editing unit 108: image editing unit

109 : screen buffer 110 : document data table

111 : Dot mattress rotation part 112 : Image reduction/enlargement part

113 : display 114 : keyboard

[Detailed Description of the Invention]

The present invention relates to a screen display method, and more particularly, to a screen display method and apparatus suitable for use in displaying a mixed mode document including text, drawings, figures, ruled lines, and the like.

In general, various documents such as office documents are created using paper in a vertical length, whereas a horizontal display of a document creation device occupies most of the market and is inexpensive.

In the case of displaying a vertical document on a horizontal display, the following method has been conventionally used. How to reduce the entire document so that the document's longitudinal orientation completely fits into the longitudinal direction of the display (reduced display) ° Rotating to display the entire document (rotation display), etc. However, in any method, especially, when the document is a chronological book or includes drawings, it is difficult to recognize and it is difficult to quickly grasp the contents of the document.

As a prior art for rotating a document, a conversion function in a word processor is widely known and, for example, there is a technique described in JP-A-63-250687.

However, the above method also changes only text data, and does not have a function of rotating a mixed-mode document including drawings, figures, ruled lines, etc. in addition to text.

In the prior art, when a document created in vertical length is displayed on a horizontal display, any one of a reduced display, a partial display, and a rotated (sideways) display is displayed, and in any method, comparison with the original document Therefore, it has a problem that it is remarkably difficult to read.

In addition, there is also known a device having a dedicated vertical display capable of displaying the entire vertical document as it is, but this type of device has a problem in that it is expensive.

An object of the present invention is to solve the problems of the prior art and to improve so that it can be easily recognized when a document written in a vertical length is displayed on a horizontal display or when a document written in a horizontal length is displayed on a vertical display An object of the present invention is to provide a screen display method, in particular, a screen display method capable of easily readable display of a mixed-mode document including a vertical length drawing, figure, etc. while using a generally circulating low-priced horizontal display.

In the present invention, a screen display device in a document creation device or the like has a function of managing a mixed mode document by dividing it into parts constituting the document, such as character data, ruled lines, and image data. After receiving an instruction to rotate the document from the operator, the screen display device determines the display position after rotation for performing coordinate transformation with respect to the display position of each part, and then adds the displayed content to the rotation of the document for each part except for the character data part and rotates it is displayed, and only the position is changed and displayed without rotating each character for the character data. According to the above method, the document can be rotated and displayed as it is in the upright position, and an easy-to-read document can be provided.

In the screen display device to which the present invention is applied, upon receiving an instruction to perform rotation display as it is in character standing, first, the layout control unit converts the position information of each part constituting the document into position information after rotation, and then the data editing unit excluding the character data The display contents of each component of the document are developed in a dot matrix. Thereafter, the image rotation unit rotates each component of the dot matrix-developed document, and the data editing unit edits the rotated dot matrix on the screen buffer again.

The character data is edited at the converted position as it is standing without rotation of the dot matrix of the data after the dot matrix expansion is performed.

However, for characters that are included in the entire document, such as arrows and parentheses, so that the meaning of the document is easier to understand, the dot matrix can be rotated and edited by the image rotation unit.

In addition, when half-width characters or double-width characters are used on the original, the aspect ratio of the rectangular region, which is the display region of one character after rotation, changes, but in this case, the image reduction/enlargement unit The vertical and horizontal reduction/enlargement of characters is performed, and processing of editing these characters in a display area corresponding to one character is performed.

Hereinafter, an embodiment of the screen display method according to the present invention will be described in detail with reference to the drawings.

1 is a block diagram showing the configuration of an apparatus for displaying mixed mode data according to an embodiment of the present invention, FIG. 2 is a diagram for explaining the configuration of a document data table, and FIG. is a flowchart for explaining a process for displaying , and FIG. 4 is a diagram illustrating, step by step, an example of rotating the screen of a document created in the vertical and longitudinal direction as it is in character orientation. 1 and 2, reference numeral 101 denotes a control device, reference numeral 102 denotes a document data file, reference numeral 103 denotes a file input/output unit, and reference numeral 104 denotes a layout control unit. , reference number 105 is a character editing unit, reference number 106 is a ruled line editing unit, reference number 107 is a graphic editing unit, reference number 108 is an image editing unit, reference number 109 is a screen buffer, and , reference number 110 is a document data table, reference number 111 is a dot matrix rotation unit, reference number 112 is an image reduction/enlargement unit, reference number 113 is a display, reference number 114 is is the keyboard.

In one embodiment of the present invention, as shown in FIG. 1, various functional elements are connected to the control device 101, and the control device 101 controls the entire device such as file input/output, screen editing, and screen display. is configured to do so.

The document data file 102 is an original document by mixed mode data displayed on the screen, and is stored in a fixed disk or a flexible disk. The document data file 102 is read by the file input/output unit 103 and stored in the document data table 110 .

The layout control unit 104 is a part that controls the position information on the screen buffer 109 of the data to be displayed, reads the data from the document data file, and displays position information indicating the position on the display screen among the data. It functions to transform along the direction to be transformed. The character editing unit 105 is a part that processes character data in the document data table 110, and edits character font data generated from character codes on the screen buffer 109 based on position information in the document data table 110. do the processing.

The ruled line editing unit 106 is a part that processes the ruled line data in the document data table 110 , and stores the dot matrix data generated from the ruled line control code on the screen buffer 109 based on the position information in the document data table 110 . Edit processing. The graphic editing unit 107 is a part that processes graphic data in the document data table 110, and stores the dot matrix data generated by the graphic command on the screen buffer 109 based on the position information in the document data table 110. Editing is performed in .

The image editing unit 108 is a part that processes image data in the document data table 110. If the data is uncompressed data, it is expanded, and if the data is compressed data, it is expanded, and then based on the position information in the document data table 110. Editing is performed on the screen buffer 109 .

The dot matrix rotation unit 111 rotates the display data required in accordance with the rotation processing of the screen. The image reduction/enlargement unit 112 reduces/enlarges the data according to the size of the display area when editing the dot matrix data in the screen buffer 109 .

Further, the display 113 displays document data and displays conversations with the operator, and the keyboard 114 inputs an instruction from the operator. For example, a message prompting input of the display document name is displayed on the display 113 , and the operator inputs the display document name by means of the keyboard 114 . Next, a message is displayed on the display 113 to ask whether the document is displayed as it is or whether it is changed vertically, a mode (to be described later) in case of performing vertical/horizontal conversion, a display magnification, etc., and the operator can use the keyboard 114 to Select or enter the information. Here, the display on the display 113 and input data from the keyboard 114 are controlled and processed by the control device 101 .

The document data table 110 is composed of data attributes 201, location information 202, and display contents 203, as shown by way of example in FIG.

In general, mixed mode data consists of text, ruled lines, graphic data, and image data. The graphic data is data representing a regular figure such as a circle, a square, or a triangle, and the image data is data representing an irregular figure other than graphic data. Graphic data is expressed in the command format of a circle with a radius of 20 dots, a side of 30 dots, and a square rotated by +15° from the horizontal axis. The image data retains the dot pattern of the image as it is or in a compressed form. In the document data table 110, the data attribute 201 encodes the types of these data. The position information 202 is obtained by digitizing the coordinates on the document page of the data to be displayed and the size information of the display area. In addition, the display content 203 is the content to be actually displayed. In the case of character data, a character code is stored, in the case of ruled line data, a ruled line control code is stored, in the case of graphic data, a graphic command is stored, and in the case of image data, image data is stored. do.

Next, a processing operation of displaying a rotated screen as it is in the upright position in the screen display device according to an embodiment of the present invention configured as described above will be described with reference to the flowchart shown in FIG. 3 .

(1) First, conversion is performed to change the positional information 202 in the document data table 110 into positional information after rotation. The above processing is performed by the layout control unit 104 .

Specifically, as shown in FIG. 4, the point M at the upper left of the original 401 is the point M' at the upper right of the mark 402 after rotation, x from the point M of the original 401 to the right, A point N at a distance of y downward is transformed from a point M' of the representation 402 after rotation to a point N' at a distance of x downward and y to the left. The above conversion processing is performed for all document data irrespective of data attributes. After the positional information conversion processing of all document data is finished, the edited contents are distributed according to the attributes of each part constituting the document (steps 301 to 303, 305, 308).

(2) When it is determined in step 303 that the data attribute is a character, the character editing unit 105 performs dot expansion processing of the character data using the working memory (step 304).

(3) When it is determined in step 305 that the data attribute is not a character but a ruled line in step 305, dot expansion processing of ruled line data is performed by the ruled line editing unit 106 using the working memory (step 306).

(4) When it is determined in step 308 that the data attribute is not a ruled line and not a graphic in step 305, dot expansion processing of graphic data is performed by the graphic editing unit 107 using the working memory (step 309).

(5) When the data attribute is none of the above in step 308, dot expansion processing of the image data is performed by the image editing unit 108 using the working memory (step 311).

(6) After the above processing is finished, the data of each attribute except for characters is subjected to dot matrix rotation processing by the dot matrix rotation unit 111 (step 310). Specifically, the dot-developed data according to (3) to (5) above is rotated at -90° (90° clockwise).

(7) According to the above (2) to (6), the data of each attribute is on the working memory in the form of a dot pattern, but the data editing units 105 to 108 are stored in the position information after the conversion of each data obtained in the above (1). Accordingly, the dot patterns are edited on the screen buffer 109 (step 307).

(8) After all data is edited on the screen buffer 109 as data constituting one page, the contents are output to the screen of the display 113 (step 312).

One embodiment of the present invention makes it possible to display the screen on which the rotation processing has been performed while the characters are standing by performing the processing as described above.

Next, a specific example of rotating the screen of a document written in a vertical direction according to an embodiment of the present invention as it is in the vertical direction will be described with reference to FIG. 4 .

4, there is a document having character data A, character data B including ruled lines, image data C, and graphic data D as shown as an original 401 in FIG. It is assumed that the screen rotates as it is erected.

In this case, first, the display positions of the display areas of each data A to D constituting the document are converted by logical rotation processing to receive address rotation, and as shown by reference numeral 402 in Fig. 4, the screen buffer Reconstructed on (109). Next, data other than characters is edited after rotation processing as shown by reference numeral 403 in FIG. 4 by editing processing of data other than characters. Finally, the character data is edited as it is, as shown by reference numeral 404 in FIG. 4 by the editing process of the character data.

In addition, the character display has full-width and half-width depending on the size of the character to be displayed. For full-width, the width and height of the text to be displayed are almost the same. For half-width, the vertical dimension is the same as full-width, but the horizontal dimension is half of the full-width. In the case where half-width characters are used in the original, the following processing is performed in order to make the character layout in the document the same before and after conversion when vertical and horizontal characters are used.

While half-width characters in the original have a vertical dimension, the characters after conversion need to be displayed in a special half-width with dimensions equal to full-width and half-width in height. For this reason, in the above embodiment of the present invention and other embodiments described below, in such a case, the size of the character in the vertical and horizontal directions is changed by the image reduction/enlargement unit 112 . Also, the same processing can be performed for double-width characters (characters having dimensions equal to full-width and twice as wide as full-width) and the like.

The above-described embodiment of the present invention has been described by performing rotation processing after developing data of all parts except characters in a dot matrix in order to clearly express the processing operation of the present invention. However, with respect to ruled lines and graphic data, performing rotation operation at the stage of ruled line control codes and graphic commands and then developing them in a dot matrix is often advantageous in terms of performance. The present invention can take such a method, which will be described below.

5 is a flowchart illustrating the processing operation of another embodiment of the present invention for rotating ruled lines and graphic data prior to developing them into a dot matrix.

(1) First, transformation is performed to change the position information in the document data table 110 into position information after rotation, and then, after an end check is performed, processing is divided according to the attributes of each part constituting the document (step 501). , 503, 506).

(2) When it is determined in step 501 that the data attribute is character data, the character editing unit 105 performs dot expansion processing of character data. The processing so far is the same as in the case of FIG. 3 (step 502).

(3) When it is determined in step 503 that the data attribute is not character data but ruled line data in step 503, the ruled line editing unit 106 rotates the ruled line control code and then performs dot expansion processing of the ruled line data by the control code do Therefore, in this case, the rotated dot matrix can be obtained without performing the dot matrix rotation process (steps 504 and 505). The rotation process is performed as follows. The ruled line control code of the ruled line data has information on the direction and length of the ruled line. The ruled line editing unit 106 changes the ruled line direction of the ruled line control code from vertical to horizontal, or from horizontal to vertical.

(4) When it is determined in step 506 that the data attribute is not ruled line data but graphic data in step 503, the graphic editing unit 107 performs the graphic command rotation processing and then the graphic data dot expansion processing is performed by the command. . Also in this case, the rotated dot matrix can be obtained without performing the dot matrix rotation process (steps 507 and 508). The rotation process is performed as follows. The graphic command of graphic data has information about the shape and size of the graphic and the angle (inclination) of the graphic. The graphic editing unit 107 rotates the angle of the figure of the graphic command to -90° (90° clockwise).

(5) If the data attribute is none of the above in step 506, dot expansion processing of the image data is performed by the image editing unit 108, and dot matrix rotation processing is performed by the dot matrix rotation unit 111 (step 510) , 511).

(6) The dot pattern created by rotation and expansion or expansion and rotation in steps 502, 505, 508, and 511 is position information after conversion of each data obtained in (1) by each data editing unit 105 to 108 is edited on the screen buffer 109 according to (step 509).

(7) After all data is edited on the screen buffer 109 as data constituting one page, the contents are output to the screen of the display 113 (step 512).

According to the above method, since the rotation processing of ruled line data and graphic data is performed at a stage before development into a dot image of a ruled line control code and graphic data, the amount of processing data is small compared to the method of developing into a dot image and then rotating, and the processing performance is reduced. improvement can be achieved.

In the above-described embodiment of the present invention, in the editing of characters, some characters, such as arrows, parentheses, and ruled lines, are more suitable for understanding the document by performing the rotation along with the rotation of the document. The present invention controls the presence or absence of rotation of each character in this way, so that the user can designate the mode as the mode at the start of document display. In this case, the code of the character to be rotated is stored in the memory, and when editing each character in the screen buffer, compare the character code in the memory with the character code to be edited and, if they match, perform -90° rotation processing before editing good to do

6 is a flowchart for explaining the processing operation of the character editing unit 105 in the case of controlling the presence or absence of rotation for each character, and FIG. It is a figure which shows and explains an example step by step.

(1) After it is determined that the processing on the character data has not ended, dot expansion of the character code is performed (steps 601 and 602).

(2) Next, it is determined whether the character code matches the code of the rotation target character held in the memory, and if it is the rotation target character, the dot matrix rotation unit 111 performs the dot matrix rotation process (step 603) , 604).

(3) After the processing of step 604 is finished, or when it is determined in step 603 that the character is not a target character to be rotated, editing processing is performed on the dot matrix buffer of the character. After the processing after step 602 for all character data is finished, the processing of character rotation and editing in the buffer is ended (step 605).

Next, a specific example of rotating the screen by rotating a part of the text of the document written in the vertical direction according to another embodiment of the present invention will be described with reference to FIG. 7 .

As shown in FIG. 7, there is a document including "parentheses" and "arrows" as shown as an original 701, and this document is divided into "parentheses" and Rotate with "arrow" to rotate the screen.

In this case, data other than the character data is controlled as described in Fig. 4, and when editing the character data into the buffer, only the specified characters such as "parentheses" and "arrow" are rotated as described in Fig. 6 A display as shown by reference numeral 702 in Fig. 7 can be obtained, and the display screen can be easily read compared to the case where the display screen is simply displayed while maintaining the sizing of the characters.

Next, some modifications of the above-described embodiment will be introduced.

Although the control device 101 controls all devices in FIG. 1 , the dot matrix rotation unit 111 or the image reduction/enlargement unit 112 may have a dedicated processor to distribute the load on the control device 101 .

Although the dot matrix rotation processing 310 and the screen buffer editing 307 in Fig. 3 are performed separately, by performing the rotation processing using the screen buffer 109, it is possible to perform screen buffer editing while rotating the dot matrix.

Similarly in FIG. 5, screen buffer editing can also be performed while dot expansion is performed by performing dot expansion 502, 505, 508, and 511 of each data using screen buffer 109.

In addition, as in the case of a histogram or some images, if rotation processing is performed, it may become difficult to recognize or lose meaning. For such a case, the upright mode can be installed for graphic data and image data as well. A flag indicating whether or not the setup mode is in the graphic data and image data is added so that the user can install this mode with a keyboard or the like before displaying the document. When the display object is image data, it is necessary to perform the processing shown in Fig. 8 (1) in order to display only a portion of the image data in an upright manner without disturbing the overall positional relationship while the other portions are rotated. That is, the image reduction/enlargement unit 112 performs enlargement or reduction processing of an original image of vertical a and horizontal b after position transformation by b/a times in the longitudinal direction and a/b times in the horizontal direction. . Similarly, in the case of graphic data, as shown in FIG. 8 (2), the graphic editing unit 107 performs scale conversion by b/a times in the vertical direction and a/b times in the horizontal direction at the stage of the graphic command. It can be realized by performing a position change after that.

Although the embodiment of the present invention described above has been described as displaying a document written in the vertical direction on a horizontal display, the present invention can also be applied to a case where a document written in the horizontal direction is displayed on a vertical screen. In addition, regardless of the horizontal or vertical length of the display, it is possible to change the orientation of the document to horizontal and vice versa.

As described above, according to the present invention, when a document created in a vertical direction is displayed on a horizontal display of the same size, ruled line data, graphic data, image data, and layout on the screen can be rotated while the characters are left standing. and the entire document can be easily displayed on the display without extreme reduction. According to the present invention, it is possible to make it easier to see as if displayed on an expensive vertical display, and to display a vertical document on an inexpensive horizontal display.