JPS58120289A - Character display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a character display device such as a document file or a Japanese document creation device.

In general, document files and Japanese document creation devices, etc.
The content of one page of paper according to a format, or a large amount of character information (hereinafter referred to as one page) that is easy to handle on a recording medium, is considered as one unit of information amount that can be handled simultaneously. However, in a typical CRT character display device, it is impossible to display all the character information for one page on one screen due to limitations in the number of display characters and resolution. Conventionally, therefore, a method has been adopted in which the contents of one page are sequentially displayed on a CRT screen by combining a read-through display that ignores the format and scrolling in the following direction or scrolling in the vertical and horizontal directions. However, with this method, it is difficult to see the character arrangement in the document, the empty space when inserting figures and tables, etc.
In particular, this was often inconvenient when inputting data into a document creation device or editing it.

Therefore, as one method to solve these drawbacks, a method has been devised in which layout information of one page's worth of displayed character arrays is roughly displayed (hereinafter referred to as "schematic screen display").

FIG. 1 shows an example of such a conventional schematic screen display. In the same figure, full-width characters such as kana and kanji are represented by ○, and half-width characters such as alphanumeric characters are represented by △. Layout information such as the sky can be seen at a glance. There are also devices that have a function of editing text in such a layout display state, and are configured to provide convenience to users.

However, such a conventional layout display is a display in a mode different from normal character display, and one of the modes must always be selected for screen display. Therefore, for example, in the state of layout display, even if the overall character arrangement is visible, it is difficult to correspond to the positions of individual characters. On the other hand, if you want to see the entire layout while inputting or editing text,
The mode has to be changed each time, which has a drawback in terms of usability.

In view of the above-mentioned drawbacks, the present invention divides the display screen into two, a main screen and a sub-screen, and allows normal character display and layout display to be performed at the same time, making it very convenient for the user. To provide a character display device that is easy to use.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram of a display device in one embodiment of the present invention. In the figure, 1 is a keyboard through which the user inputs document data, 2 is a document data storage unit that stores document data displayed on a single screen, and 3 is a document screen code refresh memory that creates a character code array for display. It is. Reference numeral 4 denotes a document display control circuit that accesses the character font pattern memory 6 according to the contents of the document screen code refresh memory 3, and creates a layout code from document data for character font pages by a method described later. The creation unit 8 is a layout code refresh memory into which information approximately displayed on the screen is inputted according to predetermined rules for document data and stored therein. 9 executes the layout according to the contents of layout code refresh memory 8.
A layout display control circuit that accesses the no-turn memory 10 serially converts the output of the layout pattern memory 1° and outputs a layout video signal. 1
Reference numeral 1 designates a window signal generation circuit which outputs a window signal to be described later in accordance with instructions from the keyboard 1, and reference numeral 6 designates a multiplexer which determines display positions of document/video signals and layout video signals based on window signals. 1λ is a CRT that displays images on the main screen and sub-screen by a video signal from a multiplexer 6, and the image is controlled by a CRT synchronization signal from a document display control circuit 4. A character display device configured as described above. The operation will be explained below.

First, the document data storage section 2 sequentially stores document data input from the keyboard 1, and sequentially transfers the document data displayed on one screen to the document screen code refresh memory 3. Then, the document screen/code refresh/i' memory 3 to which the document take is sequentially input creates a character code for document character display, and sends it to the character font association pattern memory 6 via the document display control circuit 4. The document display control circuit 4 is caused to output character font pattern information corresponding to the character code. The document display control circuit 4 performs parallel-to-parallel conversion of the character font pattern information to create a document video signal, and outputs the document video signal to the multiplexer 6.

On the other hand, the layout code/creation section 7 also inputs one page of document data from the document data storage section 2, and then displays the one page of document data according to predetermined rules on a simplified screen as described below. Convert the layout code to layout code Φ
It is output to and stored in the reflex memory 8. Then, the layout display control circuit 9 manually inputs the layout code from the layout code refresh memory 8, and then inputs the layout number (turn) corresponding to the layout code from the layout pattern memory 10. A layout video signal is created by performing parallel-to-serial conversion, and the layout video signal is output to the multiplexer 6.

On the other hand, the window signal generation circuit 11 generates a window signal according to instructions from the keyboard 1.

The window signal is supplied to the document display control circuit 4 and the layout display control circuit 9, and is also output to the multiplexer 6 to control the video screen. Then, the multiplexer 6 sends the document video signal and the layout video signal to the CRT 12 according to the instructions of the window signal.
Display on each main screen or sub screen. That is, as shown in FIG. 3, a document based on a document video signal can be displayed on the main screen of the CRT 12, and a layout based on a layout video signal can be simultaneously displayed on the subscreen. Alternatively, as shown in FIG. 4, the main screen of the CRT 12 can simultaneously display a layout using a video signal, and the subscreen can simultaneously display a document using a document video signal.

Next, the relationship between the screen display of the CRT 12 and the window signal will be explained in detail with reference to the drawings.

FIG. 5 is a diagram showing the relationship between the screen display and window signals. The sub-screen has window signals sA and sB in the horizontal and vertical directions depending on the position and shape, and the window signals in the horizontal and vertical directions are Signal esA.

The sub-screen area is determined by the logical product of 6B. That is, when displaying the layout display as a sub-screen as shown in FIG. 3, the sub-screen determined by the logical product of the horizontal and vertical window signals 5A and 5B as shown in FIG. The layout is shown in the screen area. On the other hand, if you want to display the layout on the main screen as shown in Fig. 4 and the document on the sub-screen, as shown in Fig. 6 (b)
), horizontal and
Vertical window signals sA, sB, sC, sD
After the layout and document are respectively displayed in the areas determined by the logical product of The configuration will be explained.

Figure 6 shows an example of layout compression display.0 As is clear from the figure, half-width characters such as English letters are
The characters are expressed as full-width characters such as kanji (○), and each character is compressed and displayed. Therefore, as shown in the table below, four types of layout codes are stored in the layout code creation section 7, and four types of layout patterns corresponding to the layout codes are stored in the layout pattern memory 10. Just remember it. In the case of document display, 11 uses the block area of two half-width characters for full-width characters, so in order to accommodate this when compressing the layout display, the left-hand space of full-width characters is as shown in the table below. and the right half are memorized.

〔table〕

The layout code creation unit 7 sequentially stores the layout code for one page character by character in the layout work code refresh memory 8, and then stores it in the layout pattern memory 10 as a layout code. The corresponding layout pattern is output to the layout display control circuit 9 to create a layout video signal, and then, for example, the amount of document for one page is converted into half-width characters, which is 100 characters x 60 lines. Assuming that, the layout code memory 8 is at least 10.
It is sufficient to prepare a memory of 0x60x2 bits.

On the other hand, as another method of displaying the layout, the simplest method of expressing only the presence or absence of character display, as shown in FIG. 7, may be used. In this method, it is not possible to distinguish between full-width and half-width characters, but the layout code only requires one bit of information, 1 or 0, and the layout code can be used as it is as a layout pattern, so the circuit configuration can be changed. It has the advantage of being simple.

Next, display control of document data and layout patterns will be explained with reference to FIG.

In the figure, 3 is a document screen code refresh memory, 5 is a character font pattern memory, 6 is a multiplexer, 8 is a layout code refresh memory, 10 is a layout pattern memory, and the second It has the same configuration as the one with the same number in the figure. Further, 4' and 9' are parallel-to-serial conversion circuits which are part of the document display control circuit 4 and layout display control circuit 9 shown in FIG. 2, respectively. Furthermore, 13 is an oscillation circuit that creates a dot clock, 14 and 15 are frequency divider circuits that divide the frequency of the dot clock by a specific value, and 16 is an AND circuit, which connects the oscillation circuit 13 and the frequency divider circuit 14.
, 15 and the AND'D circuit 16 control the display of document data and layout patterns.

The operation of the display control circuit configured as described above will be explained below.

The frequency divider circuit 14 divides the frequency of the dot clock generated by the oscillation circuit 13 to create a character clock. For example, if a half-width character is formed by a 12.times.24 dot pattern, the frequency divider circuit 14 divides the frequency by 12 to create a character clock. The character clock is given to the document im surface code refresh memory 3 as a read clock, and the character code is obtained according to the read clock. Next, via the document display control circuit 44 (not shown), the character font pattern memory 5 sequentially outputs the character font pattern to the parallel/serial conversion circuit 4' using the character code as an address. The parallel-to-serial conversion circuit 4' that inputs the character font pattern converts the character font pattern information into a document video signal, and converts the document video signal to the multiplexer 6.
On the other hand, like the frequency dividing circuit 14, the frequency dividing circuit 15 divides the frequency of the dot clock generated by the oscillation circuit 13 to create a layout character clock. At this time, the frequency dividing ratio of the frequency dividing circuit 150 differs depending on whether the layout is displayed on the main screen or on the sub screen. For example, when displaying the layout on the main screen, if the character arrangement of the original document data is compressed to 1/2 in both the vertical and horizontal directions and displayed on the screen, the frequency dividing circuit 15 divides the dot clock by 6. to obtain the layout character clock. on the other hand,
When displaying the layout on a sub-screen, 1/4 of the entire screen
．． In other words, if an area of 1/2 of the entire screen 16 in both the vertical and horizontal directions is used as a sub-screen, the rough screen display for layout needs to be further compressed to 1/2. As described above, the layout character clock obtained by the frequency dividing circuit 16 is input to the AND circuit 16. On the other hand, since the layout screen window signal is applied to the other end input of the AND circuit 16, the layout code refresh memory 1o lays out the layout code during the period when the layout screen window No. 916 is applied. Control circuit 9 (not shown)
output to the layout pattern memory 10 via
Furthermore, the compression ratio of layout display is controlled according to the period of the character clock. A diagram of the layout display is shown in FIG. In FIG. 9(,), (a) shows the horizontal display period of the CRT 12, (b) shows the layout screen window signal, (c) shows the character clock, and (b) shows the state of layout display. As is clear from the figure, the layout display () is controlled so that the display is performed during the period when the layout screen window signal (b) is applied, and the layout display is further compressed according to the character clock (c). The ratio is controlled to vary. FIG. 9(b) shows a layout display when the layout screen window signal (b) and character clock (c) are changed.

Next, at the timing shown in Figure 9, the layout code
From refresh memory 8 to layout display control circuit 9
The layout pattern memory 1o to which the layout code is inputted via the layout code sequentially converts the layout pattern into parallel to serial converter 9 using the layout code as an address.
The parallel-to-serial conversion circuit 9', which receives the layout pattern, performs parallel-to-serial conversion on the layout pattern information into a layout video signal, and outputs the layout video signal to the multiplexer 6.

Next, multiplexer 6 generates a window signal] r
, is controlled by a window signal from a circuit 11 (not shown) and a main/sub screen designation signal from a keyboard, etc., and sends the document video signal and layout video signal described above to the CRT 12.
By outputting to Figure 3.

As shown in FIG. 4, documents and layouts can be displayed on a CRT.

As described above, the document data storage section 2, document screen code refresh memory 3, document display control circuit 4, and character/font/pattern memory 6 are used to create a document, and the layout code/creation is used to create a document layout. section 7, layout code refresh memory 8,
Layout display control circuit 9 and layout/pattern/
A memory 10, a window signal generation circuit 11 for controlling the display of documents and layouts, and a multiplexer 6 for displaying documents and layouts on the main and sub screens of the CRT 12 by controlling the window signals of the window signal generation circuit 11. By providing this, the user can set the main and sub screens at any location on the screen of the CRT 12 and at any size.

In this embodiment, the main screen for layout is 6 x 12 dots, and the sub screen is 3 x 6 dots, so the output of the layout node memory 10 is not used unless the layout is displayed on the sub screen. There is a necessary woman that is thinned out and used at equal intervals. Therefore, as a layout book pattern, a layout like o [l rather than ○ or △... (It is better to use turns A (sometimes it is better).

On the other hand, when changing the dot clock for layout display to display a 1/2 compressed layout on the sub screen, use a dot clock that is, for example, a double frequency signal of the basic dot clock. If used, the output of the layout pattern memory 10 can be used as is.

Furthermore, by using layout patterns such as frame patterns that separate the main and sub-screens, frame patterns for tables in documents, layout patterns for special character codes such as turns and line feed symbols, It is possible to obtain a screen that is easy for the user to understand.

19. Also, in this embodiment, one page's worth of layout information is approximately displayed on the screen at one time, but one page's worth of layout information may be divided into several areas and displayed in layout.

As described above, the present invention includes a document creation means for creating a document based on input document information, and a layout creation means for creating a layout of a created document from the document information,
The control means divides the document of the document creation means and the layout of the layout creation means into different areas of the video means and displays them simultaneously, allowing the user to check the document layout while checking the input document. can be understood, and its practical effects are great.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a schematic screen display of layout information by a conventional display device, FIG. 2 is a block diagram of a character display device according to an embodiment of the present invention, and FIGS. 3 and 4 are the same character displays. A diagram showing the screen display of the device, Figure 5 is a diagram for explaining position control of the main screen and sub-screen, Figures 6 and 7 are diagrams showing compression of layout display, and Figure 8 is a diagram showing display control. The circuit block diagram and FIG. 9 are timing charts. 1. Fist...Keyboard, 2...Document data storage section, 3...Bunbara screen code refresh memory, 4...Document display control circuit, 5.
...Character/Font, Pattern, Memory 5 I
I@11+111@multiplexer, 7...
Layout code creation unit, 8e... Layout code refresh memory, 9... Layout display control circuit, 1o00000. layout,
Pattern, memory, 11... Window signal generation circuit, 12... CRT Agent's name Patent attorney Toshi Nakao and one other person 13 Figure 4 Figure 15, OC 6 Figure Kozue 7tl j CI R・T- ``1 person table size- 1,, I/T 11 yo 1 \g-

Claims (3)

[Claims] (1) A document creation device that creates a document based on input document information, a layout creation device that creates a layout of a created document based on the document information, and an output of the document creation device and an output of the layout creation device. A character display device comprising a control means for dividing and displaying a document and a document layout in different areas of a video means. (2) The document creation means includes a document data storage section that holds input document information, and a document screen code/screen code that converts one screen's worth of document data from the document data storage section into a document display character code array and stores it. The character pattern in the character font pattern memory is searched from the refresh memory, the character font pattern memory that stores character shapes, and the character code in the document screen code refresh memory, and the character pattern is and a document display control circuit for converting into a serial document video signal, and the layout creation means inputs document data for one page from the document data storage section, and a layout code for converting the document data into a layout code. The creation section and the layout/
A layout code that stores the layout code arrangement for one page by inputting the layout code from the code creation section.
a code refresh memory and a layout pattern memory that holds layout patterns;
a layout display control circuit that searches the layout pattern of the layout pattern memory from the layout code of the layout code refresh memory and converts the layout pattern into a serial layout video signal; The control means further comprises a multiplayer multiplexer for dividing the screen of the video means into main and sub-screen areas and displaying the document and document layout from the document video signal and the layout video signal. Character display device as described in Section. (3) The multiplexer is equipped with a window signal generation circuit that determines where on the video means the document and document layout are to be displayed.
Character display device as described in Section.