JPH0219462B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a document editing device, such as a Japanese word processor, which is used for inputting, editing, and editing documents, such as a Japanese word processor.
A document editing device equipped with functions such as printing, and in particular, a document editing device equipped with a dot matrix character generator and a function to display characters composed of dot matrices stored in this character generator. The present invention relates to a document editing device capable of performing various layouts including document layout display using reduced characters obtained by reducing the characters.

[Prior art]

In general, the above-mentioned document editing device uses characters,
An input section for inputting symbols, etc., a display section for displaying characters and symbols entered from the input section and documents created and edited, a temporary storage section for storing information such as control programs and already created documents, and a display section for storing information such as control programs and already created documents. It is roughly divided into a printing section that prints documents, and a control section that includes a computer and the like that controls each of the above sections. Its functions can be broadly divided into document input, editing of input documents, and saving and printing of completed documents.

Among these functions, the functions related to the operability of the document editing device are mainly the functions of inputting documents and editing the inputted documents, and the following three conditions are required for a document editing device with excellent operability. It is a point.

(1) Quickly perform document input and editing operations.
Ability to change document display on CRT monitor.

(2) The layout of an entire page of the created document (hereinafter referred to as layout) can be easily confirmed.

(3) The content of the document must be legible on the layout display screen, and editing can be performed on the layout display screen.

Therefore, the first condition mentioned above is that the shorter the time required to input a document, the better.As the operator becomes accustomed to operating the document editing device, it is possible to Considering that there are devices that can input characters, and that the operator uses the characters displayed on the CRT monitor to check whether the characters he or she has entered or the editing operations are correct, document editing In order to further improve the operability of the device, it is desirable to provide this first condition.

The second condition is that when editing or rearranging a created document, it is necessary to have an image of the layout of the document. ~20 lines, which only displays a small portion of a document page of about 40 lines, and the display does not change even when formatting changes such as line spacing or character spacing, Considering that it is difficult to imagine the layout of a document from the display screen of a conventional document editing device, it is desirable to also provide the second condition.

The third condition is to simply type the character "*" on the layout display screen, as is done in conventional document editing devices that use the code refresh method, for example.
Alternatively, simply displaying the layout of the document by replacing it with an alternative symbol that is far different from the actual character, such as "★", is not enough to make it difficult to check the layout and the contents of the document when editing the document with the layout in mind. For editing and editing work, it is necessary to frequently switch between the layout display screen and the normal display screen where document editing work can be performed, and considering that the operation is very complicated, this third It is also desirable to provide the conditions in order to further improve the operability of the document editing device.

However, there is no existing document editing device that satisfies all of the above three conditions, and in particular, there is no existing document editing device that performs editing processing on a layout display screen on which an entire page of a created document is arranged.

A document editing device that satisfies the first condition of high-speed display response stores display character information as a character code in a code refresh memory as a display method on a CRT, and changes the character code. A code refresh method is used to change the characters displayed on the CRT.

This code refresh method satisfies the condition of high-speed display response, but regarding the second condition of layout display, it has a character pattern for layout display as shown in Figure 1. In the case of documents, a pseudo layout display is only performed by writing the character code of the character pattern into the code refresh memory, and it is not possible to display a complete layout that shows the line spacing and character spacing of the document. , does not satisfy the second and third conditions above.

A document editing device that satisfies the second condition of layout display uses, for example, a dot refresh memory that associates one bit of a dot refresh memory with each pixel (dot) of the CRT, as a display method on a CRT. The Tsushiyu method is used. This dot refresh method can display any shape at any position on the display screen, so it satisfies the layout display conditions, but for example, in order to display a 24 x 24 dot character, 72 bytes of information are required. It has to be written to the dot refresh memory, and compared to the code refresh method where character changes generally only require a change of about 4 bytes, a simple calculation requires about 18 times as much processing time. Does not satisfy the high-speed response of display conditions. Furthermore, the layout display of a document editing device using the conventional dot refresh method simply involves replacing characters with alternative symbols such as "*" and "★" on the layout display screen.
There is no one that satisfies the third condition of being able to check and edit the contents of a document on a layout display screen.

[Purpose of the invention]

In addition to being able to change document display in a short time, easily confirm the layout, and decipher document content on the layout display screen, the present invention also enables the user to change the document display in a short time, easily check the layout, and decipher the document content on the layout display screen.
It is an object of the present invention to provide a document editing device with good operability that allows editing processing to be performed on the layout display screen.

[Summary of the invention]

The object is to perform editing processing while displaying only character information in the document data, in a document editing device equipped with a dot matrix character generator and a monitor. a first editing mode in which editing is performed, a second editing mode in which editing is performed while displaying a layout using a reduced character pattern representing a document image at the time of printing based on the document data, and the first editing mode during editing. This is achieved by including an editing mode changing means for changing the second editing mode.

[Embodiments of the invention]

Next, one embodiment of the present invention will be described with reference to the respective figures.

Here, FIG. 2 is an external perspective view of a document editing device according to an embodiment of the present invention, FIG. 3 is a block diagram of its control circuit, and FIG. 4 is an outline of an operating program of the document editing device. Flowchart diagram, FIG. 5 is a flowchart diagram showing the input process in detail, FIG. 6 is a flowchart diagram showing the editing process in detail, and FIG. 7 is a flowchart diagram showing the input process in detail. FIG. 8 is a flowchart showing the details of the layout display process, FIG. 8 is a flowchart showing the reduced character writing process in the layout display process of FIG. 7, and FIG. 9 is a flowchart showing the editing process in FIG. 8 in detail. 10 and 11 are flowcharts showing a conversion method for character pattern reduction conversion, FIG. 12 is a 24×24 dot character pattern diagram, and FIG. 13 is a diagram of the character pattern according to the present invention. FIG. 3 is a diagram of a reduced character pattern that has been reduced and converted by a device according to an embodiment of the present invention;

That is, as shown in FIG. 2, the document editing device according to an embodiment of the present invention includes a main body 121 that includes a temporary storage section, a display section, and a control section as described below.
, a keyboard 122 which is an input section, and a printer 124 which is a printing section as shown in FIG.
These main body 121, printer 124, and keyboard 122 exchange control signals or information signals through cables 130 and 131, respectively, as shown in FIG.

In FIG. 2, 123 is a CRT related to a CRT monitor, and 125 is a flexible disk device (hereinafter referred to as FDD).

In the main body 121, a control section of the control circuit shown in the block diagram of FIG. 3, which is indicated by a dashed line, is installed.

That is, a program storage type computer unit (hereinafter referred to as CPU) 301, a boot ROM 302 made of non-volatile memory and having a program executed when the power is turned on, and a boot ROM 302 for storing programs and information for executing the function as a document editing device. A program memory 303 that can be read and written at any time, a character generator (hereinafter referred to as CG) 304 that stores dot data representing characters and symbols in a dot matrix as an index of character and symbol codes, and a display of documents, etc. A code refresh memory 310 and a dot refresh memory 311 that can be read and written at any time to store information such as characters to be displayed on the CRT 123 that performs display);
Code refresh memory 3 according to command 01
The dot data is read from the CG 304 according to the character code read from 10, or the dot data is read from the dot refresh memory 311, converted to a video signal, and sent to the CRT 1 along with a synchronizing signal.
23 CRT controller 305, CPU
A flexible disk control circuit (hereinafter referred to as EDC) 306 controls the FDD 125 according to instructions from the CPU 301, and outputs signals and print signals to the printer 1 to control the printer 110 according to instructions from the CPU 301.
a printer controller 307 and CPU 3 that receive signals from the printer 124 and send signals indicating the status of the printer 124 to the CPU 301;
control the keyboard 122 according to the command of 01;
The input signal from the keyboard 122 is sent to the CPU 301.
a key input controller 308, the CPU 301, the boot ROM 302, the program memory 303, and the code refresh memory 31.
0, CG304, dot refresh memory 31
1. CRT controller 305, CRT123,
A control unit is installed, which includes an internal wiring path 309 connecting the FDC 306, FDD 125, printer controller 307, and key input controller 308.

Here, the FDD 125 drives a flexible disk, which is a magnetic storage medium, and records information on the flexible disk and reads information from the flexible disk. A CRT 123 related to a display section and an FDD 125 related to a temporary storage section are installed substantially at the front of the main body 121.

The overall operation of the document editing device configured as above will be described next.

That is, in the above configuration, when the power is turned on, the program that operates as a document editing device having the flow shown in FIG. 4, which is stored in the flexible disk in the FDD 125, follows the program in the boot ROM 302. is transferred to the program memory 303, and then the document editing device starts operating according to the program having the flow shown in FIG. 4 that has been transferred to the program memory 303.

Note that in FIG. 4, the auxiliary function indicates a process in which the user designs a character shape separately and inputs it, for example.

When input processing or editing processing is selected from each process by the work selection input, a document creation program or document editing program having a flow similar to that shown in FIG. 5 or 6 is executed. . A document being created or edited by a document creation program or a document editing program is code refreshed according to the input processing or editing processing program having the flow shown in FIG. 5 or 6 in the program memory 303. The image is displayed on the CRT 123 by a code refresh method using the memory 310.

Commands for processing associated with inputting and editing characters in the document are input from the keyboard 122 and detected by the CPU 301 via the key input controller 308. According to the input, the CPU 301 stores the character code of the input character in the code refresh memory 3.
10 and display the input characters on the CRT 123, or change the character code in the code refresh memory 310 according to the commanded editing process, and change the displayed document on the CRT 123. At this time, the CPU 301 also changes the document information in a portion of the program memory 303 in which document information is stored (referred to as a document buffer).

Further, when a layout display command is input from the keyboard 122, the key input controller 308
The CPU 301 detects the execution of layout display via the program memory 303.
A layout display program having a flow as shown in FIG. 7 stored in the computer is executed.

When layout display processing starts, CPU3
01 gives a command to the CRT controller 305,
The code refresh method document display by the input processing or editing processing programs shown in FIGS. 5 and 6, respectively, is erased from the CRT 123.

Next, the dot refresh memory 311 is initialized, and after this process is completed, a command is given to the CRT controller 305 to display the contents of the dot refresh memory 311 on the CRT 123.
Display it on CRT123.

Next, the character codes are sequentially read from the document buffer in the program memory 303, and the display position of the character when displaying the layout is calculated by the CPU 301. Based on the display position information and the character code, the character code is read as shown in FIG. A reduced character pattern is written in the dot refresh memory 311 by a reduced character writing program having the following flow.

By repeating this process until the layout display for one page is completed, a layout with reduced characters is displayed on the CRT 123.

When the layout display for one page with reduced characters is completed, select whether to perform editing processing on the layout display screen. When performing editing processing, use the keyboard 122 in the same way as editing processing on the document display screen using the code refresh method. The user then inputs an editing command to update the contents of the document buffer.

The program flow of the editing process is as shown in FIG.
It determines whether the command input from step 2 corresponds to editing processing, such as character deletion/correction, movement, format change, or document layout change, and performs each of the following processes. If the result is not correct, the process returns to inputting instructions for the editing contents, and a new instruction is provided.

In the case of character deletion, by instructing the deletion range from the keyboard 122, the CPU 301 deletes the corresponding character code in the document buffer according to the program and rearranges the new character code.

In the case of correction, by specifying the correction range from the keyboard 122 and inputting the characters to be corrected,
The CPU 301 replaces the corresponding character code in the document buffer with a new character code according to the program, and rearranges the character codes in the document buffer.

In the case of movement, by specifying the movement string range and movement destination from the keyboard 122, the CPU
01 moves character codes within the document buffer according to the program and rearranges the character codes.

In the case of a format change, by instructing a new format from the keyboard 122, the CPU 301 rewrites the format information in the document buffer according to the program.

When changing the layout, such as opening a frame or setting an input-prohibited area, when instructions for the new layout are input from the keyboard 122, the CPU 301
According to the program, frame information and display prohibited area information in the document buffer are rewritten.

In the manner described above, the character code in the document buffer is rewritten with new document information.

When the editing process is completed in this way, the flow returns to the point where the character display of the layout display program starts, as shown in the flowchart of FIG. 7, and the layout after the editing process is displayed on the CRT 123 by repeating the layout display process. do.

When the editing process is finished or when no editing process is to be performed, the layout display continues until the layout display is finished, and in response to an instruction to finish the layout display, the CPU 301 stops displaying using the dot refresh method to the CRT controller 305. This command instructs display using the code refresh method and returns to the document creation or document editing program.

Although it was a bit different, CRT12 in a layout display program with a flow similar to that shown in Figure 7 above.
Characters are displayed on the screen 3 by executing a reduced character writing program having the flow shown in FIG.

The reduced character writing program is generally as follows, with k, j, m, and n as constants, as shown in FIG.
A character pattern D expressed by a dot matrix of km×jn is D'(x,y)=D(kx,jy)+D(kx+1,jy)+...
...+D[k(x+1)-1,jy] +D(kx,jy+1)+...+D[k(x+1)-
1, jy+1]...+D[kx,j(y+1)-1]+...+D[k
(x + 1) - 1, j (y + 1) - 1] (However, + indicates a logical sum.) According to the algorithm indicated by This is a process of writing to the corresponding location in the refresh memory 311.

Conventionally, methods for obtaining a reduced character pattern from a character pattern represented by a dot matrix pattern of km x jn include methods for obtaining a reduced character pattern by thinning out appropriate rows and columns of the character pattern represented by a dot matrix. , take the logical sum of two appropriate rows or columns in one direction of the row or column, and replace the newly obtained row or column with the previous two rows or columns to obtain a reduced pattern that is reduced in one direction. , and then performs two processes of reducing in the same way in the remaining directions.
Methods for obtaining the final reduced character pattern are known.

However, in the former, the character pattern changes,
Characters may not be recognized, and in the latter case, to obtain the final reduced character pattern, reduction processing must be performed twice, once in each column and row direction, resulting in a long processing time. There is.

As shown in Figure 10, the algorithm-based reduction method has a remarkable effect as a reduction method alone, in that the final reduced character pattern can be obtained in one reduction process, and the processing time is halved compared to the conventional method. be.

In this embodiment, each constant in the conversion formula is j=k=2 m=n=12, and a reduced character writing program having the flow shown in FIG.
As shown in the figure, the character pattern displayed on the CRT123 in a 24 x 24 dot matrix pattern is
Two lines at a time are read out from the CG 304, and the character pattern is read out from the CG 304 as shown in FIG.
2 dots vertically and horizontally for 402 in the “1” line,
A total of 4 dots can be expressed using the logical formula D' (x, y) = D (2x, 2y) + D (2x + 1, 2y) + D (2x, 2y + 1) + D (2x + 1, 2y +
1) (In Figures 11 to 13, the shaded area is logic "1".) By sequentially converting to one dot according to the following, a reduced pattern for one line of 403 is created, and the dot reflex is By repeating writing to the storage memory 311, the first
Displays reduced characters in a 12 x 12 dot matrix pattern as shown in Figure 3.

By using a document editing device that has the structure and operation described above, you can change characters on the layout display screen to conventional "*" or "★" characters without agreeing to the dot matrix pattern of characters for layout display. ” rather than alternative symbols such as
It becomes possible to display the characters as readable characters as shown in Fig. 3.

Of course, not all character patterns are legible even after reduction conversion according to this embodiment. However, according to experiments, almost all characters such as hiragana, katakana, numbers, etc., in which the area of the diagonal line in the 24 x 24 dot pattern in Figure 12 is relatively small, can be read with just one character even after reduction conversion. To the extent that it is difficult to distinguish between semi-voiced characters such as ``po'' and ``bo'' and diacritic characters. However, the probability that these half-voiced or voiced characters will appear in a document is low, and even if they do appear, they can be read depending on the context of the document.

In addition, many of the reduced characters obtained by reducing the size of Kanji characters can be read as just one character, as shown in FIG. 13, based on the font. The probability that a kanji appears in a document is 40-50%
Considering that and the above, even one character in a document is legible.
It can be estimated that it is around 70-80%. It is also important to consider that it is rare for a single character that cannot be read in sequence to appear in a document after reduction conversion, and even if they do appear, almost all of them can be read depending on the context. Taken together, it can be concluded that the document on the layout display screen according to this example is legible.

Therefore, by displaying the layout of a document using reduced characters that have been converted to a reduced size, it becomes possible to read the document displayed on the layout display screen, and to check the arrangement of the document according to the content of the document. It becomes possible to do this. In addition, since the content of the document is readable on the layout display screen, editing processes such as correction, insertion, and movement of the document can be performed on the layout display screen using a program with the flow shown in Figures 7 to 9 described above. be able to do it.

As described above, according to this embodiment, the document editing device is equipped with a code refresh memory and a dot refresh memory, so that the code refresh method with excellent high-speed response and the dot refresh method with a high degree of freedom in display can be used as display methods. It is possible to switch and select as needed.

As a result, when inputting or editing documents that require high-speed display response, the code refresh method with excellent high-speed response can be used.
By satisfying the first condition of the above-mentioned conditions for a document editing device with excellent operability, and using the dot refresh method with excellent display flexibility when displaying a layout that requires display flexibility, It performs a complete layout display where the layout display screen changes depending on the line spacing and character spacing, satisfies the second condition of the conditions for a document editing device with excellent operability, and furthermore, the characters used in the layout display are reduced in size as described above. By using characters, in addition to being able to read the contents of the document on the layout display screen as described above, it is also possible to perform editing processing on the layout display screen without frequently switching between the layout display screen and the normal display screen. This makes it possible to satisfy the third condition among the conditions for a document editing device with excellent operability.

Further, according to this embodiment, since a character generator having a character pattern for displaying a layout is not required, the price of the document editing device is also lower than that of a document editing device having a separate character generator exclusively for reduced characters. Become something.

In addition to the document editing device according to the embodiment described above, the reduced character display program shown in FIGS. One dot conversion, storage as information for one line of reduced characters, and writing of one line of reduced characters to display memory, etc., are configured by hardware, or the above-mentioned in the flow of Fig. 8 is used. It is conceivable that the program for generating the dot matrix pattern of the reduced characters involved in the conversion could be constructed using hardware such as a conversion element such as a similar LSI.
It is clear that this is also included in the present invention.

If the above program is configured using hardware, the processing time will be shorter than if everything is processed by software as in this embodiment, so the effect is that the time required to complete the layout display will be shortened. There is.

Further, in the above embodiment, the dot refresh memory is used for displaying a layout based on the generated reduced character pattern.
For example, it indicates the presence of various characters, symbols, figures, or standard objects stored in CG.
It can be configured to be used for layout display using a separate pattern or a pattern generated by the CPU using a calculation formula.

In addition, Japanese Patent Application Laid-open No. 141692/1983 discloses that in addition to a first area in which display character data is stored in the memory, there is also a second area in which pixel signals for the display screen are stored from the CPU, and Address input and readout output to character generator by CPU
Or, by having a switching circuit on either side of the display control circuit, it has two display modes: a first mode that displays only characters, and a second display mode that displays a mixture of characters and graphic patterns. A cathode ray tube display device, that is, a cathode ray tube display device in which the CPU can also use a character generator to display a mixture of characters and graphic patterns, has been proposed. A technology for performing editing processing on a layout display screen in which an entire page of a document is arranged in a reduced size, in other words, a technology for performing editing processing on the layout display screen without frequently switching between the layout display screen and the normal display screen. is not disclosed.

〔Effect of the invention〕

The present invention is as described above, and as is clear from the description of the illustrated embodiments, according to the present invention, (1) the display on the monitor can be changed in a short time in response to document input and editing operations;

(2) The layout of an entire page of a created document can be easily confirmed.

(3) In addition to being able to read the contents of the document on the layout display screen, there is also an operation that allows editing processing to be performed on the layout display screen without frequently switching between the layout display screen and the normal display screen. A document editing device with excellent performance can be obtained.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of character patterns when a layout is displayed by a conventional document editing device that employs a code refresh method, and FIG. 2 is an external perspective view of a document editing device according to an embodiment of the present invention. , FIG. 3 is a block diagram of its control circuit, FIG. 4 is a schematic flowchart of its document editing device operation program, FIG. 5 is a flowchart showing its input processing in detail, and FIG. 7 is a flowchart showing the editing process in detail.
The figure is a flowchart diagram showing in detail the layout display processing in the flowcharts of Figures 5 and 6;
8 is a flowchart showing details of the reduced character writing process in the layout display process of FIG. 7, FIG. 9 is a flowchart showing details of the editing process of FIG. 8, and FIGS. The figure is an explanatory diagram of the conversion method for character pattern reduction conversion. Figure 12 is a diagram of a 24 x 24 dot character pattern.
FIG. 3 is a diagram of a reduced character pattern obtained by reducing and converting the character pattern using an apparatus according to an embodiment of the present invention. 123...CRT, 301...Program storage type computer unit, 302...Boot ROM, 303...
Program memory, 304...Character generator, 305...CRT controller, 309...
Internal wiring path, 310... code refresh memory, 311... dot refresh memory.

Claims (1)

[Scope of Claims] 1. A document editing device comprising a dot matrix character generator and a monitor, comprising: a document data storage means; a document data changing means; a first editing mode in which an editing process is performed; a second editing mode in which an editing process is performed while displaying a layout using a reduced character pattern representing a document image at the time of printing based on the document data; A document editing device comprising an editing mode changing means for changing a first editing mode and a second editing mode. 2. In the invention described in claim 1, the document editing device has a code refresh memory and a dot refresh memory as display memories, and at least one of the two memories. In the first editing mode, in which editing is performed while displaying only character information in document data, the code refresh memory is used to perform display, and the document data is also displayed. In a second editing mode in which editing processing is performed while displaying a layout using a reduced character pattern representing a document image at the time of printing, the document editing device is configured to perform display using the dot refresh memory.