JPH04297923A - Character coder converting system - Google Patents

Abstract

PURPOSE:To reduce a code conversion table to be prepared in advance by first converting an input character string to an intermediate code train and next converting the intermediate code train to an output character code train. CONSTITUTION:A preconverting means 1 executes preconversion to the intermediate code train while referring to a code conversion table 3 from a JIS code to an intermediate code. Next, a post-converting means 2 executes post- conversion to an objective output character code train while referring to a code conversion table 4 from the obtained intermediate code to an EBCDIC square form of Japanese syllabary (KANA) code. For example, when an X code system is added to the input character code, conversion to all the output character codes is enabled only by adding a conversion table from an X code to the intermediate code and for example, when a Z code system is added to the output character code, conversion from all the input character codes to Z codes is enabled only by adding a conversion table from the intermediate code to the Z code.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character code conversion method, and more particularly to a character code conversion method for an information processing device.

0002

[Prior Art] Conventionally, this type of character code conversion method was
The input character code string is directly converted to the output character code string by referring to the input character code to output character code conversion table.

0003

[Problem to be Solved by the Invention] The conventional character code conversion method described above uses a code conversion table that directly converts input character codes to output character codes. Since the code conversion table that had been used until then cannot be used, a code conversion table for all possible input/output code combinations, for example, JIS code, EBCDIC Katakana, ASCII code, and EBCDIC code, is created. There is a drawback in that 12 types of conversion tables must be prepared as shown in FIG. 3, which shows the types of code conversion tables.

0004

[Means for Solving the Problems] The character code conversion method of the present invention includes a plurality of conversion tables having correspondences between character codes and predetermined intermediate codes, and converts an input character code string to the above by referring to the conversion tables. The apparatus includes a pre-conversion means for converting into an intermediate code string, and a post-conversion means for converting the intermediate code string into a designated output character code string by referring to the conversion table.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a diagram showing the types of code conversion tables used in the embodiment of FIG. The types of code conversion table in Figure 2 are for four types of input character code and output character code: JIS code, EBCDIC Katakana, ASCII code, and EBCDIC code, and are shown in item numbers 1 to 8. .

[0007] The code conversion process in FIG.
To explain the case of conversion from a code string to an EBCDIC katakana code string as an example, first, the pre-conversion means 1 is a JI
Pre-conversion from S code to intermediate code is performed with reference to the code conversion table 3 indicated by item number 1 in FIG. 2. Next, the post-conversion means 2 performs post-conversion from the obtained intermediate code to the EBCDIC katakana code into a target output character code string by referring to the code conversion table 4 shown by item number 6 in FIG.

[0008] If, for example, the X code system is added to the input character code, just by adding a conversion table from the X code to the intermediate code, conversion to all output character codes becomes possible, and the output character code For example, if a Z code system is added, all input character codes can be converted to Z codes simply by adding a conversion table from intermediate codes to Z codes.

[0009]

Effects of the Invention As explained above, the present invention first converts an input character string into an intermediate code string, and then converts the intermediate code string into an output character code string, thereby providing a code conversion table prepared in advance. This has the effect of significantly reducing the number of types compared to the conventional method.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a diagram showing types of code conversion tables used in the embodiment of FIG. 1;

FIG. 3 is a diagram showing an example of the types of code conversion tables used in a conventional character code conversion method.

[Explanation of symbols]

1 Pre-conversion means 2 Post conversion means

Claims (1)

[Claims] 1. A plurality of conversion tables having correspondences between character codes and predetermined intermediate codes, pre-conversion means for converting an input character code string into the intermediate code string by referring to the conversion tables, and the conversion table. A character code conversion method comprising post-conversion means for converting the intermediate code string into a specified output character code string with reference to a table.