JPH0310982B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an editing device that displays and edits character data on a display unit such as a CRT before outputting characters with a computer typesetting machine or other various printers. Specifically, it relates to registration of character data in a plurality of fonts to be displayed on the display unit, access to character data, and the like.

[Background of the Invention] Recently, in fields such as newspaper typesetting and general printing, systems using computerized typesetting and various other printers have been used to quickly assemble and correct texts, as well as perform various editing processes. In such a system, many articles, texts, and typesetting data are input using an input device, stored on a floppy disk, magnetic disk, or computer storage device, and then displayed on the display of an editing device. They perform various corrections and editing tasks, and output the results using computer phototypesetting machines and other various printers.

The editing device generally consists of a display section 1, a keyboard 2, a coordinate input section 3, a floppy disk device 4, etc. as shown in Fig. 2, and displays already input character data based on typesetting data, and edits the text on the display screen. It performs various editing operations such as correcting and deleting documents, changing the formatting format, and moving documents.

Since the text output from the system is displayed on a monitor, it is desirable that at least two fonts, Mincho and Kuretake, be displayed on the editing device. In addition, in order to perform precise typesetting in printing, for example, as shown in Fig. 3, even if the same alpha alphabet "I" is in the center of the virtual body 5 (Fig. 3 A), it is necessary to place it in the center of the virtual body 5 (Fig. (Fig. 3 B) etc., and in order to perform proofreading on the screen, it is necessary to include a pattern to accurately indicate where the characters are located in the virtual body, as shown as dotted line 6 in Fig. 3. It is essential to display the information in a tangible form. If a character including such a pattern is defined as a "proofreading" typeface here, the editing device needs to store at least the aforementioned three typefaces, Mincho, Kuretake, and proofreading, in the character storage device.

However, the characters and symbols used in general printing are
For example, JIS that can be displayed on a Japanese word processor
Compared to the approximately 7,200 characters in the second level, each of the three fonts above required approximately 30,000 character types, for a total of approximately 100,000 characters, and had an enormous memory capacity. However, in the proofreading, Mincho, and Kuretake typefaces, there are symbols, numbers, and punctuation marks, such as dots and maru.
,...,,,...,(1),(2),(3)..., etc.There are many characters whose character patterns do not change even if the font changes, but due to handling problems, conventionally Even if the character patterns are the same, they are registered in duplicate for each typeface.

Furthermore, even if this character/symbol pattern is stored in a storage device such as a magnetic disk, it has the disadvantage that it requires a considerable amount of access time to display a desired character due to the huge number of characters.
Furthermore, even if a method is adopted in which a part of the character pattern is read from a magnetic disk and expanded onto the main memory, and a desired pattern is accessed from among the expanded character patterns, only part of the character pattern is accessed. However, characters that are used frequently are not always stored in the main memory, and character patterns other than those stored in the main memory are read from the magnetic disk and newly stored in the main memory. There are problems such as the need to frequently perform data transfer such as expansion into 2 characters, and that it cannot be expected to be very effective in shortening the access time for displaying desired characters.

[Object of the Invention] The present invention has been made based on the above points, and it is possible to develop a part of character data stored in a character storage device onto a main memory, access the main memory, and display a desired character on a display section. When displaying, we manage the frequency,
To provide an editing device which minimizes the use of main memory and minimizes data transfer between a character storage device and the main memory. The feature is that the editing device stores character pattern information of multiple fonts in the storage section, displays the characters on the display section, and performs various editing operations. a character data file in which character patterns are registered; a file management table storing information indicating a unique file address for each file of the character data file and data for managing frequency information; and a file management table storing data for managing frequency information. Information unique to each character pattern that indicates the location of information to be referenced in the management table,
and information indicating the addresses of character patterns in each file are divided into a plurality of index sections and registered therein, and a plurality of said files are registered in which character patterns are registered in units of a plurality of characters. A main memory that expands two of the index parts of the index file divided into multiple parts and a file management table, and a main memory that supplies character codes and character type information from the outside to display characters on the display part. and a character data access unit that performs an operation of accessing desired character data, and the character data access unit, when accessing the character data,
When a file containing the desired character is not expanded in the main memory, the frequency information indicated by the file management table of multiple expanded files is compared, and the location where the file with the lowest frequency is expanded is determined. The process involves transferring data from a character data file to a file containing desired characters and developing it.

[Structure and Operation of the Invention] FIG. 1 is a diagram showing an embodiment of the present invention, in which the part indicated by A is a character data registration system, and the part indicated by B is a display system.

First, registration of character data will be explained.
In the character data registration system A, 7 is a character data registration unit that performs various controls when registering character data, 8 is a character data file for registering character data, and 9 is an index for registering the index of each character data. File 10 is a file management table. FIG. 4 is a flowchart for explaining the operation of the character data registration section 7 in the character data registration system A of FIG.

The operation of registering character data will be described below with reference to the flowcharts of FIGS. 1 and 4.

First, character pattern information to be registered from the outside is sent to the character data registration section 7, and it is determined whether the character pattern is the same as a previously registered character pattern.

The same thing has not been registered before,
When the character pattern is registered for the first time, the character pattern is registered in the character data file 8.

Here, the character data file 8 will be explained. FIG. 5 is a diagram schematically showing the character data file 8. As can be seen from the figure, the character data file 8 stores a certain number of characters, for example, 128 characters.
Multiple files 11 stored as one unit
It consists of

On the other hand, if the character pattern is the same as the previously registered one, the character pattern is not registered in the character data file 8 and the process proceeds to the next step.

Here, the index file 9 and file management table 10 will be explained. 6th
The figure is a diagram schematically showing the index file 9. 9a is for proofreading, 9b is for Mincho, 9
c is Kuretake's index file, which is divided into four index sections each, for a total of 12 index sections. Each index in each index section includes file management No. 10 in the file management table 10, which will be described later.
a. In-file addresses 92 in the file 11 in which each character pattern in the character data file 8 is registered are written.

FIG. 7 is a schematic diagram of the file management table 10. File management table 10
is file management No. 10-1 (10 in Figure 6).
a), a file ID 10-2 indicating from which address in the character data file 8 the file 11 in which the character pattern is registered is registered;
Segment 1 used indicates the segment used when expanding file 11 onto the main memory, which will be described later.
0-3, and an access counter 10 that indicates the number of times the file 11 has been accessed.
-4. A set of file management No., file d, used segment, and access counter in this file management table 10 is 1.
One file corresponds to one file 11.

In the step, character type information and character code information indicating whether the font is for proofreading, Mincho, or Kuretake are sent from an external source, and dual-purpose characters indicating whether to use the previously registered character pattern as is. Among the three types of information (FIGS. 1 and 4), it is determined whether or not the previously registered character pattern is to be used in combination with the shared character information.

If they are not used together, the file 11 in which the character pattern is registered in the file d column of the file management table 10 that has a unique file management number to the file 11 in which the character pattern was registered first.
Information indicating from which address in the character data file 8 the character pattern is registered is written, and furthermore, the file management number and the address in the file 11 of the character pattern are written in the corresponding index area of the index file 9.

If it is determined that a character pattern is to be shared, copy the contents of the index section of the character pattern that is already registered in the character data file, that is, the file management number and the address in file 11, and copy those data. is written in the index area determined by the character code information in the index section determined by the character type information.

All of the character data registration operations described above are performed by the character data registration section 7.

As described above, character data is registered sequentially.

[Configuration and operation of the invention] Next, a case will be described in which characters are displayed on the display unit using the character data registered as described above.

In the display section B of FIG. 1, 12 is a main memory in which a plurality of files 11 registered in units of, for example, 128 characters of the character data file 8 are stored, and 2 of the 12 divided index sections of the index file 9 are stored. This is a memory in which the data of the file management table 10 and the file management table 10 are expanded.
13 is a character data access unit that accesses the main memory 12 based on information such as the specified character code and character type, and sends a desired character pattern to the display control unit 14; 14 is a display control unit; and 15 is a display unit. It is.

FIG. 8 is a flowchart for explaining the operation of the character data access section 13 of the display system B shown in FIG.
Below, the operation of displaying character data on the display section is explained in the first section.
This will be explained according to the flowchart shown in FIG.

First, character information (character code, character type, etc.) constituting the document to be displayed is sent to the display control section 14. The display control unit 14 sends the character code and character type information of the first character to the character data access unit 1.
Send to 3.

The character data access unit 13 identifies whether the font is proofreading, Mincho, or Kuretake based on the received character type information. Then, based on the character code, each typeface is divided into four parts and is registered in the index file 9. Among the index parts registered in the index file 9, which index part is registered is specified, and the specified index part is stored in the main memory Determine whether it has been expanded to.

If the corresponding index section is not developed on the main memory 12, the corresponding index section is loaded from the index file 9 into the main memory 12.
Expand on top.

If the corresponding index section is developed on the main memory 12, the process advances to the next step.

The index of the corresponding character in the index section developed on the main memory 12 is referred to. As shown in Figure 6, the index is file management No. 10a and file address 9.
It is composed of 2. Therefore, the used segment 1 stored in the corresponding table of the file management table 10 expanded on the main memory 12 based on the file management number of the index
By referring to 0-3, it is determined whether the file 11 containing the desired characters has been developed in the main memory 12.

If it is expanded, proceed to the next step.

If the file 11 has not been expanded, it is determined whether the file 11 has been expanded as fully as possible on the main memory 12.

If not fully expanded, main memory 1
File management table 1 expanded on 2
The file 11 starting from the address on the character data file 8 indicated by the file d of 0 is expanded into the segment on the main memory 12 indicated by the used segment of the file management table 10.

If the file 11 is expanded to the maximum, frequency information of the file 11 stored in the access counter of the file management table 10 also expanded in the main memory 12 corresponding to each of the multiple expanded files 11 is read. The comparison is made, and the file 11 containing the desired characters is developed at the position of the file 11 least frequently used.

By the above operations, the index of the desired character and the file 11 are developed on the main memory 12.

Finally, access the corresponding index using the received character type information and character code information,
As a result, the file management number of the file management table 10 to be accessed can be determined, and by accessing the used segment column of the file management table 10 having that file management number, the main memory 1 can be accessed.
The location of the file 11 containing the desired character on 2 can be found. Therefore, by using this information and the address information in the file when accessing the index, it is possible to know in which position in the file 11 the character pattern data of the desired character is located, and the display control unit accesses the character pattern data at that position. Send to 14. At the same time, by accessing file 11,
The value of the access counter of the file management table 10 is incremented by one.

The character pattern data sent to the display control section 14 as described above is displayed as desired characters on the display section 15 under the control of the display control section 14.

With respect to the character information sent one after another in this way, desired characters are accessed and displayed on the display section as described above.

The embodiments of the present invention have been described in detail above. Although the above description has been made regarding an editing device, the present invention is not limited to this, and it goes without saying that it can be implemented in devices that store a plurality of fonts, such as computer phototypesetting machines and various printers.

[Effects of the Invention] As explained above, according to the present invention, when accessing registered data and displaying it on the display unit,
For example, each time a file registered in units of 128 characters is accessed, the access counter in the file management table is counted up, and the desired file is placed in the position of the least frequently used file among the multiple files expanded on the main memory. By performing frequency management by expanding files in which characters are registered, files with high frequency are made to reside in the main memory. As a result, the access time for displaying desired characters can be significantly increased.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing a general editing device, FIG. 3 is a diagram showing an example of a character pattern for proofreading, and FIG. A flowchart explaining the operation of the character data registration unit 7 in the character data registration system A, FIG. 5 is a diagram schematically showing the character data file 8, FIG. 6 is a diagram schematically showing the index file 9, FIG. 7 is a diagram schematically showing the file management table 10,
FIG. 8 is a flowchart illustrating the operation of the character data access section 13 of the display system B shown in FIG. 7... Character data registration section, 8... Character data file, 9... Index file, 10...
File management table, 12...Main memory, 13
. . . Character data access section, 14 . . . Display control section, 15 . . . Display section.

Claims (1)

[Scope of Claims] 1. In an editing device that stores character pattern information of multiple fonts in a storage unit, displays characters on a display unit, and performs various editing operations, the multiple character data is divided into multiple files as one unit. a character data file in which character patterns are registered; a file management table storing information indicating a unique file address for each file of the character data file and data for managing frequency information; An index file in which unique information for each character pattern indicating the position of information to be referenced in the management table and information indicating the address of the character pattern within each file are divided into multiple index sections and registered. and a main memory that stores a plurality of the files in which character patterns are registered in units of a plurality of characters, two index parts of the plurality of index parts of the index file, and a file management table. and a character data access unit that performs an operation of accessing desired character data by externally providing a character code and character type information in order to display characters on the display unit, the character data access unit comprising: When accessing character data, if a file containing the desired character is not expanded in the main memory, the frequency information indicated by the file management table of multiple expanded files is compared, and the file with the lowest frequency is An editing device that transfers data from a character data file and develops a file containing desired characters at a position where the file is developed.