JPH0264696A - Character processor - Google Patents

Abstract

PURPOSE:To efficiently use a font cache memory by checking up in advance a character kind which is used within a designated range of a document and registering a character set of the character kind which is used most frequently in the font cache memory. CONSTITUTION:First of all, the use frequency of a character kind which is used within a desired range for executing a retrieval of the character kind is decided. That is, a CPU 3 counts the number of characters of every character kind of a document which is inputted and determines the character kind to be registered in a font cache memory 4 from its result, develops a character set of the character kind of the largest value of a character classification counter to a dot format and registers it in the font cache memory 4. Subsequently, in accordance with an inputted instruction, shaping of the document is executed and an output of the character is executed. In such a way, the character can always be outputted efficiently.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a memory for developing characters expressed in stroke format into dot format and storing the results.
The present invention relates to a character processing device having a font cache memory (hereinafter referred to as a font cache memory).

[Conventional technology]

Displaying characters expressed in stroke format on a display or printing them on a printer generally takes more time than displaying or printing characters expressed in dot format. Therefore, if you temporarily store dot-format characters in the font cache memory and display or print the characters in the font cache memory when you want to output the characters again, you can convert the stroke-format characters to dot-format again. It is possible to save the work of developing characters into characters, and to display or print them at high speed.

However, the capacity of the font cache memory is limited, and it is impossible to register all kanji characters, and it is also difficult from a capacity standpoint to register all characters that appear twice.

Therefore, we devised ways to register as many characters as possible by specifying the size of the characters to be registered, or by deleting characters that are used less frequently when the font cache memory is full. was going on.

In general, a document is written in one character type (hereinafter, in the detailed description of the present invention, the meaning of character size will also be included; in other words, characters with different sizes are also referred to as different character types). many. Therefore,
Even if a character has not appeared in a document until now, if it is of that character type, there is a high possibility that it will appear in the future. In addition, the number of places where character types differ within a single document is usually only within a very narrow range.

However, with the conventional method, once the font cache memory capacity is full, the next time you register a character, the frequently appearing character types are deleted, and other character types that are only used in narrow @ brackets are deleted. There was a possibility that I would have left it there forever. In other words, there was a problem in that the font cache memory could not be used efficiently.

〔the purpose〕

In view of the above points, an object of the present invention is to check in advance the character types used within a specified range of a document, register the character set of the most used character types in the font cache memory, and store the remaining character sets in the font cache memory. An object of the present invention is to provide a character processing device that can be used for characters.

〔Example〕

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

FIG. 1 is a block diagram showing the configuration of the system in this embodiment, where 1 is a keyboard for inputting documents and instructions, and 2 stores character data expressed in stroke format and documents input from the keyboard I. 3 is a CPU that performs main processing in the present invention, such as developing stroke data on the external storage device 2 into dot-form characters, and stores programs etc. shown in FIGS. 2 and 3. This includes a ROM that stores data, and a RAM that stores data such as count data, which will be described later. 4 is a font cache memory for registering characters expanded into dot format by the CPU 3, and 5 is a dot display for displaying characters. In addition to converting characters into dot format, the processing of the CPU 3 includes counting the number of characters of each character type in the input document, determining the character type to be registered in the font cache memory 4 from the result, controlling the dot display 5, etc. I do.

FIG. 2 is a flowchart for explaining the operation of this embodiment, and S1 to S13 represent each step.

First, a range for viewing the usage status of character types in an input document is specified (Sl). This may be set in the program or by the user. In this embodiment, the range is one page. Then, enter one character or l instruction from the beginning of the first page (S2)
, it is determined whether this is the end of one page (S3). If not, it is determined whether it is a character or not (S4), and if it is a character, the value of the character type counter corresponding to the current character type is increased by 1 (S5), and the process returns to S2. If it is determined in S4 that it is not a character, it is determined whether or not it is a character type designation instruction (S6), and if it is not a character type designation instruction, the process directly returns to S2. If it is determined in S6 that it is a character type designation instruction, then it is determined whether a character type counter corresponding to the designated character type has already been installed (S7). If it has been set, go to S9. If it has not been set, a character type counter corresponding to the newly specified character type is installed and its value is initialized (S8).Then, the specified character type is set as the current character type. (S9), then return to S2. S3
When the end of one page is detected in , the character set with the largest character type counter value is expanded into dot format and registered in the font cache memory 4 (5IO), and the location where other characters are registered (user registration area) (Sll). Then, according to the input instructions, the document is formatted (S12) and characters are output (S13).

The process of S12 is not mentioned in this patent (it is a process performed by conventional document formatting application programs, word processors, etc.).

FIG. 3 shows the character output operation of 313 in detail. The routine shown in this flowchart is called for each character,
It operates by passing the character type and character code of the character to be output as arguments. 5131 to 5139 represent each step. First, it is determined whether the current character type is the specified character type (5131), and if so, 51
Go to 38. If the character type is different from the character type specified in 5131, it is checked whether the corresponding character exists in the user registration area in the font cache memory 4 (S132). If it exists, go to 5138.

If it does not exist, a character is generated from the character information stored in the external storage device 2 and converted into a dot-format character (S
133). Next, it is determined whether the character is to be registered in the font cache memory 4 (5134), and if the character is to be registered, it is checked whether there is still space left in the user registration area (S135). If there are any remaining characters, register the characters in the unregistered portion (5136), and if no characters remain, delete the registered characters sequentially from the beginning of the user registration area and register new characters there (S137). And output characters from font cache memory 4 5138
), return to the main routine. If it is determined in 5134 that the character is not to be registered in font cache memory 4, 5
The characters created in step 133 are displayed on the dot display (5139), and the process returns to the main routine.

[Other Examples]

In the above embodiment, one page was specified as the range to search for the status of the character types used, but in this way, it is possible to specify one page or one page in the input document.
This is fine if the specified range can be clearly indicated, such as a chapter, and the end of the range is known, but there are cases where it is not possible to clearly indicate one page or one chapter in the document (for example,
The document formatting program TeX automatically breaks pages, so the user does not know where one page ends when inputting), in such cases, specify a range such as the number of lines or bytes in the input document. It is also possible.

Further, although only one character set is registered in the font cache memory 4 in the above example, it is also possible to register a plurality of character sets as long as the font cache memory 4 has sufficient capacity. At this time, in the above example, the character types are registered in order of the number of characters with the highest value in the character type counter, but this does not have to be the case (for example, the number of characters in the character type with the highest number and the number of characters with the second highest number of characters in the character type If the difference in the number of characters is large, you can widen the user registration area (by not registering the second character type, etc.) to obtain more efficient results.Also, in the above example, if the user registration area is filled Sometimes, characters are deleted in order from the beginning of the user registration area, but this can also be done by, for example, a conventional method such as prioritizing and deleting characters that appear less frequently.

[Effects] According to the present invention, by checking the character types that appear in a document, registering the character set of that character type in advance in the font cache memory, and registering other characters in the remaining part of the font cache. , the character set of character types that frequently appear in a document is not erased, and characters can always be efficiently output.

According to the present invention, the frequency of character types within a desired range can be determined and the characters can be registered in advance in the font cache memory.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a flowchart for explaining the operation of the embodiment, and Fig. 3 is an explanation of the operation of the part that outputs characters in the embodiment. This is a flowchart for

Claims (2)

[Claims] (1) An input means for inputting instructions for setting a document to be output and the output format of the document; and a first storage means for storing data of characters and other figures displayed in stroke format. , a character development means for developing the stroke data of the characters, etc., figures stored in the first storage means into dot-format character data; and a character development means for temporarily developing the characters, etc., figures developed into dot-format by the character development means. a second storage means for storing; determining the frequency of use of character types used in a desired range in which character types are to be searched; and converting characters of frequently used character types into stroke form by the character development means; A character processing device characterized in that the character processing device outputs a document after expanding the data into a dot format and storing it in the second storage means. (2) In claim (1), the remaining area after dot-format character, etc. graphic data is registered in the second storage means is an area in which other character types can be arbitrarily registered. A character processing device characterized by: