JP2011154495A - Character code conversion device, character code conversion method and character code conversion program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a character code conversion device or the like rapidly and normally converting a character string including a special character or an external character. <P>SOLUTION: This character code conversion device 10 includes: an external storage means 14 storing a dictionary file 42 for defining a conversion rule wherein a first code conversion table group 41 including a plurality of code conversion tables and an optional character string between character codes before and after the conversion are associated; a code conversion processing part 51 storing one or more necessary code conversion tables from the first code conversion table group in a previously equipped main storage means 12 as a second code conversion table group 41B when started; and a dictionary conversion processing part 52 reading the dictionary file 42 when started, and updating a code conversion table corresponding to the conversion rule inside the second code conversion table group 41B based on the conversion rule defined inside the dictionary file. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a character code conversion device, a character code conversion method, and a character code conversion program, and in particular, a character code conversion device, a character code conversion method, and a character code conversion method that can quickly convert a character string including special characters and external characters. It relates to a character code conversion program.

  There are many systems for character codes for using characters on a computer. Particularly in Japanese, EUC (EUC_JP), JIS (7 bits), Shift JIS (SHIFT_JIS), Unicode (UTF-8), etc. are often used. In addition to many standards for character codes, there are also character codes specific to specific vendors, such as NEC Corporation's JIPS (JIPS (J), JIPS (E)). is there.

  FIG. 9 is an explanatory diagram illustrating an example of a situation in which character code conversion is used in a computer network. In a general computer network 501, a client computer 510 as a terminal device and an application server 520 are connected via the Internet 530, and the application server 520 is further connected to a host 540 by a mainframe. Inside the application server 520, a web application 521, an EJB (Enterprise JavaBeans) 522, and a character code conversion unit 523 are operating.

  The client computer 510 transmits a character string described in a character code such as Shift JIS or Unicode to the web application 521. The character code conversion unit 523 converts this character string received from the web application 521 via the EJB 522 to JIPS, and transmits the character string to an existing online business system operating on the host 540 for processing. The processing result described in JIPS returned from the host 540 is converted into shift JIS or Unicode by the character code conversion unit 523, and returned to the client computer 510 through the EJB 522 and the web application 521. This conversion of character codes is necessary so that existing online business systems need not be changed.

  In addition to this example, there are many scenes in which character code conversion is required when using a computer. For example, JIS (7-bit) is the de facto standard character code for Japanese e-mail, and many computers use JIS (7-bit) for e-mail created with character codes such as Shift JIS and Unicode. It is sent after being converted to.

  In some cases, a character defined in one character code is not defined in another character code (or divided into a plurality of types of characters). For example, special characters (vendor-defined characters) and external characters (user-defined characters) correspond to this. Such special characters and external characters are often included in names of people and places. When a character string described in a certain character code is converted into another character code, if the character string includes those special characters or external characters, there is a problem that the character string is not converted into a normal character string.

  As technical documents related to character code conversion of character strings including special characters and external characters, for example, there are the following patent documents. Among them, Patent Document 1 discloses a character code conversion method in which code conversion of special characters and external characters is performed by a device different from a code conversion device for normal character codes, and then passed to a code conversion device for normal character codes. Is described.

  Patent Document 2 describes a character code conversion method that enables high-speed conversion and memory capacity reduction by having a conversion table only in one direction. Patent Document 3 describes a character code conversion method in which a new character font is created or a conversion table is added when a character code not previously associated with a conversion table is generated.

JP 2001-243217 A JP 2006-252330 A JP 2006-338223 A

  Although the techniques described in each of the above-mentioned patent documents can normally convert a character string including special characters and external characters, there is a problem that the conversion process takes a lot of time and effort.

  For example, the technique described in Patent Document 1 requires a two-stage process in which only special characters and external characters are first subjected to code conversion and then code conversion is performed on a normal character code. Further, the technique described in Patent Document 1 has a problem that it is necessary to modify the conversion table itself used for conversion of normal character codes even when only the special character or external character code conversion rules are to be changed. .

  Since the technique described in Patent Document 2 has only a conversion table in one direction, conversion in the opposite direction is impossible, or the processing is significantly slowed down. In the technique described in Patent Document 3, since new character font creation and conversion table addition work are performed at the time of conversion processing, it takes time for the processing.

  Furthermore, the standards related to each character code are frequently revised, and the revision may add characters used in personal names, place names, etc., and change or replace the fonts (in fact, the JIS standards ( (In some cases, the use of external characters was prohibited in principle due to the revision of JIS X 0208). In such a case, these methods also have a problem that the entire conversion table needs to be corrected. The techniques described in Patent Documents 1 to 3 cannot cope with this problem.

  An object of the present invention is to provide a character code conversion device and a character code conversion which can quickly and normally convert a character string including special characters and external characters and can easily cope with a change or replacement of a character font. A method and a character code conversion program are provided.

  In order to achieve the above object, a character code conversion apparatus according to the present invention is a character code conversion apparatus that converts input character string information before conversion into a converted character string having a different character code, and outputs the converted character string information. A first code conversion table group including a plurality of code conversion tables that define a correspondence relationship between only character codes, and a dictionary file that defines conversion rules that correspond to arbitrary character strings between character codes before and after conversion External storage means for storing, and code stored as a second code conversion table group in main storage means provided in advance with one or more necessary code conversion tables from the first code conversion table group when activated Reads the dictionary file when activated with the conversion processing unit, and converts it in the second code conversion table group based on the conversion rules defined in this dictionary file It characterized by having a dictionary conversion processing unit for updating the code conversion table corresponding to the law.

  In order to achieve the above object, a character code conversion method according to the present invention is a character code conversion device that converts input character string information before conversion into a converted character string having a different character code and outputs the character code. When the conversion device is activated, a first code conversion table group including a plurality of code conversion tables defining a correspondence relationship between character codes in only one direction is read from an external storage means provided in advance with a code conversion processing unit. One or more necessary code conversion tables from the read first code conversion table group are stored as a second code conversion table group in the main storage means provided in advance in the code conversion processing unit, Following the code conversion table group, a dictionary file defining a conversion rule corresponding to an arbitrary character string between character codes before and after conversion is converted from the external storage means to the dictionary conversion process. Department reads the code conversion table corresponding to the conversion rule in the second code conversion table group based on the defined conversion rule into the dictionary file dictionary conversion processing unit and updates.

  In order to achieve the above object, a character code conversion program according to the present invention is a character code conversion apparatus that converts input character string information before conversion into a converted character string having a different character code and outputs the character code. When the character code conversion device is activated, the computer provided in the conversion device is preliminarily provided with a first code conversion table group including a plurality of code conversion tables that define correspondences between character codes in only one direction. A procedure for reading from the external storage means, and a procedure for storing one or more necessary code conversion tables from the read first code conversion table group as a second code conversion table group in a main storage means provided in advance. A dictionary file that defines a conversion rule that corresponds to an arbitrary character string between character codes before and after conversion following the first code conversion table group A procedure for reading from the partial storage means, and a procedure for updating the code conversion table corresponding to the conversion rule in the second code conversion table group based on the conversion rule defined in the dictionary file. To do.

  As described above, the present invention is configured to update the code conversion table according to the conversion rules defined in the dictionary file when the character code conversion apparatus is started up. Conversion processing can be performed with the same effort as character code conversion in only the direction. This makes it possible to quickly and normally convert character strings including special characters and external characters, and to easily change and replace fonts. A character code conversion method and a character code conversion program can be provided.

It is explanatory drawing which shows the structure of the character code converter based on the 1st Embodiment of this invention. It is explanatory drawing which shows the more detailed data structure of the character string information before conversion shown in FIG. 3 is a table showing an example of conversion directions that are possible in a plurality of code conversion tables included in the code conversion table group shown in FIG. 1. It is explanatory drawing which shows an example of the definition of the conversion rule by the dictionary file shown in FIG. 1, and reflection to this code conversion table group. It is a flowchart shown about the process at the time of the code conversion means shown in FIG. 1 being started. It is a flowchart shown about the process at the time of the code conversion means shown in FIG. 1 converting a character code. It is explanatory drawing which shows the structure of the character code conversion apparatus which concerns on the 2nd Embodiment of this invention. It is a flowchart which shows operation | movement of the dictionary update process part shown in FIG. It is explanatory drawing which shows an example of the scene where conversion of a character code is utilized in a computer network.

(First embodiment)
Hereinafter, the structure of the 1st Embodiment of this invention is demonstrated based on attached FIG.
First, the basic content of the present embodiment will be described, and then more specific content will be described.
The character code conversion device 10 according to the present embodiment is a character code conversion device that converts input character string information 31 before conversion into a converted character string 32 having a different character code and outputs the converted character string information 31. The character code conversion device 10 includes a first code conversion table group 41 including a plurality of code conversion tables that define a correspondence relationship between character codes in only one direction, and an arbitrary character string between character codes before and after conversion. A main memory preliminarily provided with external storage means 14 for storing a dictionary file 42 that defines corresponding conversion rules and one or more necessary code conversion tables from the first code conversion table group when activated. The code conversion processing unit 51 stored in the means 12 as the second code conversion table group 41B, and the dictionary file 42 is read when activated, and the second code conversion table based on the conversion rule defined in the dictionary file. And a dictionary conversion processing unit 52 for updating a code conversion table corresponding to the conversion rule in the group 41B.

  Here, the pre-conversion character string information 31 includes a pre-conversion character string 31A and conversion direction information 31B that defines the character code types before and after conversion, and the code conversion processing unit 51 inputs the pre-conversion character string information 31. When this is done, a code conversion table corresponding to the conversion direction information 31B is retrieved from the second code conversion table group 41B, and a post-conversion character string corresponding to the pre-conversion character string is output.

  The second code conversion table group 41B includes a first code conversion table and a second code conversion table that defines the correspondence between the first code conversion table and the character code in the reverse direction.

With this configuration, the character code conversion device 10 can quickly and normally convert a character string including special characters and external characters.
Hereinafter, this will be described in more detail.

  FIG. 1 is an explanatory diagram showing a hardware configuration of the character code conversion apparatus 10 according to the first embodiment of the present invention. The character code conversion device 10 is a general computer device, and is a main operation control means (CPU: Central Processing Unit) 11 which is a main body for executing a computer program, a main storage means (RAM) 12 for storing data, Application state storage means 13 for storing the operating state of the application software being operated, external storage means 14 and 15 such as a hard disk, input means 16 such as a keyboard for accepting an input operation from the user, and processing results to the user And an output means 17 such as a display for displaying. The main storage unit 12 and the application state storage unit 13 may be physically the same storage unit. Similarly, the external storage units 14 and 15 may be physically the same storage unit.

  The main arithmetic control unit 11 operates general application software 21 such as a word processor, spreadsheet, web browser, and the like, and stores the operation state in the application state storage unit 13. The application software 21 is operated by the user via the input unit 16 and the processing result is displayed on the output unit 17. The code conversion unit 22 is used as necessary in the course of the processing. In response to the call from the application software 21, the code conversion means 22 operates on the main arithmetic control means 11, and the application software 21 inputs the pre-conversion character string information 31 thereto. The code conversion means 22 is software that converts the pre-conversion character string information 31 into a post-conversion character string 32 having a different character code and returns it to the application software 21. The application software 21 that has received the converted character string 32 returns from the application state storage unit 13 to the main arithmetic control unit 11 and continues its operation.

  The external storage unit 14 stores a code conversion table group 41 that is data to be referred to when the code conversion unit 22 performs processing described later. Similarly, the external storage means 15 stores a dictionary file 42 that is data to be referred to when the code conversion means 22 performs processing described later. The contents of the code conversion table group 41 and the dictionary file 42 will be described later.

  The code conversion means 22 is composed of functional units, a code conversion processing unit 51 and a dictionary conversion processing unit 52. The code conversion processing unit 51 reads the code conversion table group 41 from the external storage unit 14 and stores it in the main storage unit 12 as the code conversion table group 41B. When the pre-conversion character string information 31 is input from the application software 21, the code conversion processing unit 51 refers to the data in the code conversion table group 41 to acquire the converted character code, and thereby converts the converted character string. The process of converting to 32 is performed.

  The dictionary conversion processing unit 52 reads the data of the dictionary file 42 from the external storage means 15, refers to this, and updates the code conversion table group 41B on the main storage means 12 based on the information defined therein. . Details of this processing will also be described later.

  FIG. 2 is an explanatory diagram showing a more detailed data structure of the pre-conversion character string information 31 shown in FIG. The pre-conversion character string information 31 includes a pre-conversion character string 31A and conversion direction information 31B that defines a character code type before and after conversion, for example, “Unicode → Shift JIS”. The post-conversion character string 32 is a character string after the pre-conversion character string 31A is converted according to the conversion direction information 31B.

  FIG. 3 is a table showing examples of possible conversion directions in the respective code conversion tables of the code conversion table groups 41 and 41B shown in FIG. One code conversion table can be converted only in one direction, for example, “Unicode → Shift JIS”. For this reason, the code conversion table group 41 includes a plurality of code conversion tables for performing conversion in only one direction, such as “Unicode → Shift JIS”, “Shift JIS → Unicode”, “Unicode → EUC”, “EUC → Unicode”, and the like. . In FIG. 3, even if the character code types before and after conversion are the same, if the JIS year type is different, the character shape and the like may be different. Therefore, the character code types before and after conversion and the JIS year type are shown together.

  The code conversion table group 41B is obtained by extracting only the necessary code conversion table defined in advance from the code conversion table group 41. Here, only “Unicode → Shift JIS” and “Shift JIS → Unicode” are extracted.

  FIG. 4 is an explanatory diagram showing an example of the conversion rule definition by the dictionary file 42 shown in FIG. 1 and the reflection of this definition on the code conversion table group 41B. In the dictionary file 42, arbitrary conversion rules can be defined, and conversion rules concerning a plurality of code conversion tables can be defined. Note that the dictionary file 42 here is a Japanese input method such as MS-IME manufactured by Microsoft Corporation or ATOK (registered trademark) manufactured by JustSystems Corporation. It is not particularly related to the dictionary file used when converting to a column.

  For example, in the example shown in FIG. 4, a definition that associates Unicode 3042 “A” with the shift JIS 82A9 “ka” or a definition that associates Unicode 3055 “sa” with the shift JIS 82BD “ta” is described. Yes. This association of “A” → “ka”, “sa” → “ta” is only described as an example. Actually, between the Unicode side and the shift JIS side, any character including special characters, external characters, etc. Can be defined as a conversion rule. The dictionary conversion processing unit 52 reflects the conversion rule defined in the dictionary file 42 in the code conversion table corresponding to this conversion direction (here, “Unicode → Shift JIS”) in the code conversion table group 41B.

  FIG. 5 is a flowchart showing processing when the code converting means 22 shown in FIG. 1 is activated. At the time of activation, the code conversion processing unit 51 reads the code conversion table group 41 from the external storage unit 14 and stores it in the main storage unit 12 as the code conversion table group 41B (step S101).

  At that time, the code conversion processing unit 51 does not read out all the data of the code conversion table group 41 and stores it as the code conversion table group 41B, but reads only necessary data in advance. Can do. In the present embodiment, a code conversion table corresponding to a certain conversion direction and the opposite direction is extracted from the code conversion table group 41 and stored as a code conversion table group 41B. This enables character code conversion processing between specific character codes.

  After the code conversion processing unit 51 stores the code conversion table group 41B in the main storage unit 12, the dictionary conversion processing unit 52 checks whether the dictionary file 42 exists on the external storage unit 15. (Step S102). If the dictionary file 42 exists, the dictionary conversion processing unit 52 reads the definition of the conversion rule shown in FIG. 4 defined in the dictionary file 42 (step S103), and continues the processing after step S104. If the dictionary file 42 does not exist in step S102, the process ends there.

  Thereafter, the dictionary conversion processing unit 52 determines which code conversion table definition content is to be updated among a plurality of code conversion tables read by the code conversion table group 41B (step S104).

  Here, the code conversion table for updating the definition content is determined by searching the code conversion table group 41B for a code conversion table that matches the conversion direction defined in the dictionary file. For example, when “unicode → shift JIS” is defined in the dictionary file 42, a code conversion table in the conversion direction of “unicode → shift JIS” is searched from the code conversion table group 41B.

  After detecting the code conversion table to be updated, the dictionary conversion processing unit 52 updates the code conversion table group 41 </ b> B with the contents defined in the dictionary file 42. (Step S105) This completes the activation process of the code conversion means 22.

  In the update of the code conversion table group 41B performed in step S105, the dictionary conversion processing unit 52 reads a plurality of definitions defined in the dictionary file 42, and the code conversion table held in the code conversion table group 41B with the contents thereof. Update the contents of.

  At this time, the code conversion table group 41B has a plurality of code conversion tables holding only one-way conversion such as “Unicode → Shift JIS” as shown in FIG. Searches the code conversion table group 41B for a code conversion table that matches the conversion direction defined in the dictionary file.

  For example, when the correspondence relationship of the characters “Unicode → Shift JIS” is defined in the dictionary file 42, the code conversion table of the conversion direction of “Unicode → Shift JIS” is retrieved from the code conversion table group 41B and acquired. After acquiring this code conversion table, the contents of this code conversion table are updated with the contents defined in the dictionary file 42.

  FIG. 6 is a flowchart showing processing when the code conversion means 22 shown in FIG. 1 converts character codes. When pre-conversion character string information 31 (pre-conversion character string 31A and conversion direction information 31B) is input from the application software 21 to the code conversion means 22 (step S201), the code conversion processing unit 51 inputs the pre-conversion The process of converting the character string 31A according to the conversion direction information 31B is started.

  At this time, with respect to the code conversion table held in the code conversion table group 41B by the code conversion processing unit 51, conversion direction information 31B input from the application, for example, a code corresponding to the conversion direction such as “Unicode → Shift JIS”. A conversion table is searched from the code conversion table group 41B (step S202).

  Thereafter, the code conversion processing unit 51 refers to the code conversion table acquired, acquires the character code corresponding to the character code before conversion from the code conversion table (step S203), and corresponds to the acquired character code after the acquisition. The converted character string 32 is output to the application software 21 (step S204). The processing described in FIG. 6 is the same as the character code conversion processing for a normal character string that does not include special characters or external characters.

(More specific operation example)
Next, the present embodiment will be described with a more specific operation example. In the process when the code conversion means 22 shown in FIG. 5 is activated, the dictionary file 42 exists on the external storage means 14 and the conversion direction “Unicode → Shift JIS” is defined in the dictionary file 42. It shall be. The code conversion means 22 reads the code conversion table group 41 from the external storage means 14 and stores it in the main storage means 12 as the code conversion table group 41B (step S101).

  One code conversion table can be converted only in one direction, for example, “Unicode → Shift JIS”. Therefore, the code conversion table group 41 performs unidirectional conversion such as “Unicode → Shift JIS”, “Shift JIS → Unicode”, “Unicode → EUC”, “EUC → Unicode”, etc., as shown in FIG. Holds multiple code conversion tables.

  Since the code conversion processing unit 51 does not read out all the data of the code conversion table group 41 and stores it as the code conversion table group 41B, it can define and read only necessary data in advance. Here, only “Unicode → Shift JIS” and “Shift JIS → Unicode” are stored in the main memory 12 as the code conversion table group 41B.

  If defined in this way, a character code conversion process can be performed between Unicode and Shift JIS. As described in FIG. 9, when a character string is converted into another character code and passed to another device for processing, in many cases, the returned character string of the processing result is converted in the reverse direction. Therefore, it is desirable to enable conversion processing between specific character codes.

  After the code conversion processing unit 51 stores the code conversion table group 41B in the main storage unit 12, the dictionary conversion processing unit 52 checks whether the dictionary file 42 exists on the external storage unit 14. (Step S102). Here, since the dictionary file 42 exists, the dictionary conversion processing unit 52 reads the definition content defined in the dictionary file 42 (step S103), and continues the processing after step S104.

  Thereafter, the dictionary conversion processing unit 52 determines which code conversion table definition content is to be updated among the plurality of code conversion tables read by the code conversion table group 41B (step S104). Here, as defined in the dictionary file 42, a code conversion table in the conversion direction “Unicode → Shift JIS” is searched from the code conversion table group 41B.

  The dictionary conversion processing unit 52 detects the “Unicode → Shift JIS” code conversion table from the code conversion table group 41B, and then updates the code conversion table group 41B on the main storage unit 12 with the contents defined here. (Step S105).

  In the process when the code conversion means 22 shown in FIG. 6 converts the character code, the conversion direction information 31B “Unicode → Shift JIS” is sent from the application software 21 to the code conversion means 22 in the same manner. It is assumed that the pre-conversion character string information 31 including is input (step S201).

  When the pre-conversion character string information 31 is input from the application software 21, the code conversion processing unit 51 converts the pre-conversion character string 31A according to the conversion direction information 31B = “Unicode → Shift JIS”. At this time, with respect to the code conversion table held by the code conversion processing unit 51 in the code conversion table group 41B, the code conversion table corresponding to the conversion direction information 31B = “Unicode → Shift JIS” input from the application is subjected to code conversion. A search is made from the table group 41B (step S202).

  After that, referring to the “Unicode → Shift JIS” code conversion table acquired by the code conversion processing unit 51, the character code corresponding to the character code before conversion is acquired from the code conversion table (step S 203). The converted character string 32 corresponding to the acquired character code is output to the application software 21 (step S204).

(Overall operation of the first embodiment)
Next, the overall operation of the above embodiment will be described. The character code conversion method according to the present embodiment is a character code conversion device 10 that converts input character string information before conversion into a converted character string having a different character code and outputs the converted character string information. A first code conversion table group including a plurality of code conversion tables defining a correspondence relationship between character codes in only one direction is read from an external storage means provided in advance with a code conversion processing unit. One or more necessary code conversion tables from one code conversion table group are stored as a second code conversion table group in a main storage means provided in advance with a code conversion processing unit (FIG. 5, step S101). Following the first code conversion table group, a dictionary file defining a conversion rule that is a correspondence of an arbitrary character string between character codes before and after conversion is stored from the external storage means. The book conversion processor reads the code conversion table corresponding to the conversion rule in the second code conversion table group based on the conversion rule defined in the dictionary file (step S103 in FIG. 5). Is updated (FIG. 5, step S105).

Here, each of the above-described operation steps may be programmed to be executable by a computer, and may be executed by the character code conversion apparatus 10 which is a computer that directly executes each of the steps.
With this configuration and operation, the present embodiment has the following effects.

  In this embodiment, code conversion is not performed in a two-stage process as in the technique described in Patent Document 1, but based on the contents defined in the dictionary file 42 when the code conversion means 22 is activated. Since the code conversion table group 41B is updated, the code conversion can be performed in the same one-stage process as the code conversion process for a normal character string that does not include special characters or external characters while the code conversion means 22 is operating. This makes it possible to perform code conversion processing at high speed. In addition, since any conversion rule can be defined as long as it is defined in the dictionary file 42 instead of making a change to the code conversion table group 41, it can easily cope with a change or replacement of a font due to a change in the standard. It becomes possible.

(Second Embodiment)
The character code conversion device 310 according to the second embodiment periodically checks whether or not the dictionary file has been updated in the configuration of the character code conversion device 10 according to the first embodiment. For example, a dictionary update processing unit 353 for updating the code conversion table corresponding to the conversion rule in the second code conversion table group is added.

As a result, conversion rules can be changed without restarting the character code conversion device 310.
Hereinafter, this will be described in more detail.

  FIG. 7 is an explanatory diagram showing the configuration of the character code conversion apparatus 310 according to the second embodiment of the present invention. In addition to the code conversion processing unit 51 and the dictionary conversion processing unit 52, the character code conversion device 310 adds the code conversion means 22 of the character code conversion device 10 according to the first embodiment shown in FIG. It is set as the structure changed into the code conversion means 322 which has. Other configurations are the same as those of the character code conversion apparatus 310 according to the first embodiment.

  FIG. 8 is a flowchart showing the operation of the dictionary update processing unit 353 shown in FIG. The dictionary update processing unit 353 checks at regular intervals whether the update date of the dictionary file 42 has changed (step S401), and if the update date has changed, reads the dictionary file 42 from the external storage means 14 ( In step S402, the code conversion means 22 updates the code conversion table group 41B stored on the main storage means 12 with the read content (step S403).

  The processing for updating the code conversion table group 41B by the dictionary update processing unit 353 is the same as the processing by the dictionary conversion processing unit 52 described in the first embodiment. However, this processing is performed independently of the processing by the code conversion processing unit 51 and the dictionary conversion processing unit 52 shown in FIGS.

  Except for this point, the operation of the code conversion unit 322 is the same as that of the code conversion unit 22 described as the first embodiment. Thereby, the character code conversion device 310 has an effect that the conversion rule can be changed without restarting the character code conversion device 310 in addition to the effect described in the first embodiment.

  The present invention has been described with reference to the specific embodiments shown in the drawings. However, the present invention is not limited to the embodiments shown in the drawings, and any known hitherto provided that the effects of the present invention are achieved. Even if it is a structure, it is employable.

  The present invention can be widely applied to computer devices or computer networks that perform character code conversion.

DESCRIPTION OF SYMBOLS 10,310 Character code converter 11 Main calculation control means 12 Main storage means 13 Application state storage means 14, 15 External storage means 16 Input means 17 Output means 21 Application software 22, 322 Code conversion means 31 Pre-conversion character string information 31A conversion Previous character string 31B Conversion direction information 32 Converted character string 41, 41B Code conversion table group 42 Dictionary file 51 Code conversion processing unit 52 Dictionary conversion processing unit 353 Dictionary update processing unit

Claims (6)

A character code conversion device that converts input character string information before conversion into a converted character string having a different character code and outputs the converted character string information,
A first code conversion table group including a plurality of code conversion tables that define a correspondence relationship between character codes in only one direction and a conversion rule that is a correspondence of an arbitrary character string between the character codes before and after the conversion are defined. An external storage means for storing dictionary files;
A code conversion processing unit for storing one or more necessary code conversion tables from the first code conversion table group as a second code conversion table group in a main storage unit provided in advance when activated;
Dictionary conversion processing that reads the dictionary file when activated and updates a code conversion table corresponding to the conversion rule in the second code conversion table group based on the conversion rule defined in the dictionary file And a character code conversion device. The pre-conversion character string information includes a pre-conversion character string and conversion direction information defining character code types before and after conversion,
When the pre-conversion character string information is input, the code conversion processing unit searches the code conversion table corresponding to the conversion direction information from the second code conversion table group and corresponds to the pre-conversion character string. The character code conversion device according to claim 1, wherein the converted character string is output.   The second code conversion table group includes a first code conversion table and a second code conversion table that defines a correspondence relationship between character codes in the reverse direction of the first code conversion table. The character code conversion device according to claim 1.   A dictionary update processing unit that periodically checks whether or not the dictionary file is updated, and updates the code conversion table corresponding to the conversion rule in the second code conversion table group if updated. The character code conversion device according to claim 1, wherein the character code conversion device is a character code conversion device. In the character code conversion device for converting the input pre-conversion character string information into a post-conversion character string with a different character code and outputting the converted character string information,
When the character code conversion device is activated, an external storage in which a code conversion processing unit is preliminarily provided with a first code conversion table group including a plurality of code conversion tables that define a correspondence relationship between character codes in only one direction. Read from means,
One or more necessary code conversion tables from the read first code conversion table group are stored as a second code conversion table group in the main storage means provided in advance in the code conversion processing unit,
Following the first code conversion table group, the dictionary conversion processing unit reads a dictionary file defining a conversion rule that is a correspondence of an arbitrary character string between the character codes before and after conversion from the external storage unit,
Character code conversion characterized in that a dictionary conversion processing unit updates a code conversion table corresponding to the conversion rule in the second code conversion table group based on the conversion rule defined in the dictionary file. Method. In the character code conversion device for converting the input pre-conversion character string information into a post-conversion character string with a different character code and outputting the converted character string information,
In the computer provided with the character code converter,
A procedure of reading a first code conversion table group including a plurality of code conversion tables defining a correspondence relationship between character codes in only one direction when the character code conversion device is activated from an external storage means provided in advance;
A procedure for storing one or more necessary code conversion tables from the read first code conversion table group as a second code conversion table group in a main storage means provided in advance;
A procedure for reading from the external storage means a dictionary file that defines a conversion rule corresponding to an arbitrary character string between the character codes before and after conversion following the first code conversion table group;
And a procedure for updating a code conversion table corresponding to the conversion rule in the second code conversion table group based on the conversion rule defined in the dictionary file. program.

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