JPH0756708A - Japanese code converting device - Google Patents

Abstract

PURPOSE:To easily and quickly execute code conversion between respectively different Japanese systems and to prevent the processing speed of an external device from being dropped by converting a converting Japanese code into a specified converted Japanese code based upon a code conversion table stored in a storage means. CONSTITUTION:An external computer 50 checks the set state of a DIP switch 30 in this Japanese code converting device before sending a Japanese code. In the case of sending a Japanese code based upon a Japanese code system different from a converting Japanese code system previously set up by the DIP switch 30, a code conversion processing changing signal is outputted prior to the Japanese code. A judging means 11 judges the changing Japanese code system based upon the inputted code conversion processing changing instruction. A switching means 13 switches the converting Japanese code system registered in a Japanese code conversion table stored in a Japanese code conversion table storing part 20 based upon the judged result.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to Japanese code conversion processing in an information processing system, and more particularly to a Japanese code conversion device for independently performing code conversion between different Japanese code systems.

[0002]

2. Description of the Related Art In current information processing systems that use Japanese, JIS, shift JIS, EBCDIC,
Several Japanese code systems such as EUC are used.
In such a Japanese code system, the codes assigned to the same Japanese are different from each other, and in many cases, a different Japanese code system is used for each information processing system. Therefore, in order to use Japanese used in one information processing system in another information processing system,
It is necessary to perform code conversion between the Japanese code systems used.

By the way, conventionally, for code conversion between Japanese code systems, a person who wants to use Japanese information has
A conversion program suitable for the Japanese code system to be converted is created individually, and the OS (operating system) of the information processing system is created.
CPU (central processing unit)
) Was used to perform code conversion.
Further, a conversion program for converting the specific Japanese code system of the conversion source and the Japanese code system of the conversion destination on a one-to-one basis is created in advance, and this is recorded in advance on, for example, a floppy disk or the like. Then, when necessary, the floppy disk may be set in a disk device, and a specific conversion program recorded on the floppy disk may be read into the main memory of the computer and started up and executed.

[0004]

However, in order to individually create a conversion program, the code conversion system of the conversion source is checked one by one, and the code conversion system of the conversion destination is further checked, and then a specific programming language is selected. It is necessary to select and use it. For this reason, the burden on the person who uses the Japanese information is large, and it takes a long time before the Japanese information can be used. Further, since the CPU on the side of the information processing system is used, there is a drawback that the operation processing speed of other processing programs is reduced. On the other hand, if you want to prepare a code conversion program that converts between the specific Japanese code system of the conversion source and the specific Japanese code system of the conversion destination beforehand, if you create the individual code conversion program It is possible to reduce the time compared to. However, in this case, complicated work such as selecting a floppy disk or the like in which the code conversion program is recorded and starting it up is required. Furthermore, since the CPU on the side of the information processing system is used in the same manner as described above, problems such as slowing down the operation processing speed of other processing programs remain unsolved.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a Japanese code conversion device which can easily perform code conversion between different Japanese code systems in a short time and which does not reduce the processing speed of an external device. .

[0006]

[Means for Solving the Problems] A Japanese code converter according to claim 1 for achieving the above-mentioned object is provided between a plurality of Japanese code systems in which different codes are added to the same Japanese. In a Japanese code conversion device that performs code conversion, a specifying means for specifying the conversion source Japanese code system and the conversion destination Japanese code system in advance, and the code conversion table between the plurality of Japanese code systems described above are provided. The storage means is stored, and the conversion means performs code conversion between the designated Japanese code systems based on the code conversion table stored in the storage means.

According to a second aspect of the present invention, there is provided a Japanese code conversion device, wherein the specifying means described in the first aspect is used to convert a source Japanese code system and a destination Japanese code system. It is a DIP switch that is set in advance.

In order to achieve the above-mentioned object, a Japanese code conversion device according to a third aspect of the present invention is the Japanese code conversion device according to the first or second aspect of the present invention. And as a result of this determination, when the Japanese code system of the conversion source is different from the one specified by the above-mentioned specifying means, a switching means for switching the Japanese code system of the conversion source to another Japanese code system is provided. I am supposed to.

[0009]

In the Japanese code converter according to the first aspect, when the Japanese code of the Japanese code system designated by the designating means is input, the converting means stores the code conversion table stored in the storing means. Based on, convert the source Japanese code to the specified destination Japanese code.

In the Japanese code conversion device according to the second aspect, when the Japanese code of the Japanese code system set by the DIP switch is input, the conversion means stores the code conversion table stored in the storage means. Based on, the conversion source Japanese code is converted to the set conversion destination Japanese code.

In the Japanese code conversion device according to the third aspect, the discrimination means discriminates the conversion source Japanese code system, and as a result of the discrimination, the conversion source Japanese code system is designated by the designating means. When it is different from the above, the conversion source Japanese code system is switched to another Japanese code system by the switching means.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an electrical configuration of a Japanese code conversion device as one embodiment. The illustrated Japanese code conversion device is provided in a Japanese code conversion processing unit 10, a storage unit 20 connected to the Japanese code conversion processing unit 10, and a part of a casing or substrate (not shown) of the device. A data input / output processing unit 4 having an I / O circuit for sending and receiving Japanese codes and the like between the DIP switch 30 and an external computer 50 having a central processing unit and an input / output control unit built-in.
It has 0 and.

The storage unit 20 is, for example, a ROM (read only memory) in which a Japanese code conversion table and a Japanese code conversion program (not shown) are stored. The above-mentioned Japanese code conversion table stores, for example, a table in which the codes unique to each Japanese code system are associated with specific Japanese, and the codes between the respective Japanese code systems are stored. It is a conversion formula to be associated, and when a Japanese code of one Japanese code system is designated by this, the Japanese codes of all other Japanese code systems are uniquely determined. The above Japanese code conversion program is stored in the above Japanese code conversion processing unit 10.
A specific Japanese code system is read from the Japanese code conversion table storage unit 20 and a specific function is executed.

The Japanese code conversion processing unit 10 includes a CPU (not shown), has a function as a control center of the apparatus, and has a conversion source Japanese code system input through the data input / output processing unit 40. Determination means 1 for determining
1. As a result of this discrimination, when the conversion source Japanese code system is different from the one designated by the dip switch 30, the switching means for switching the determined conversion source Japanese code system to another Japanese code system. 13. By referring to the Japanese code conversion table stored in the storage unit 20, the Japanese code according to the conversion source Japanese code system discriminated by the discriminating unit 11 is converted into Japanese according to another Japanese code system. Each function as the conversion means 12 which converts into a word code is provided.

As described above, the DIP switch 30 is provided in a part of the casing or the board (not shown) of the present apparatus, and the user of the apparatus can arbitrarily switch the switch. This DIP switch 30
The initial values of the conversion source Japanese code system (for example, JIS) and the conversion destination Japanese code system (for example, EUC) input via the data input / output processing unit 40 are set.

The external computer 50 reads the setting state of the DIP switch 30 and sends the Japanese code if the Japanese code system is different from the Japanese code system set by the DIP switch 30. A change command signal for code conversion processing is sent prior to sending the Japanese code.

Next, the operation of the Japanese code converter having the above structure will be described. When the power of the apparatus is turned on, after initialization of each unit, the Japanese code conversion processing unit 10 executes the reading operation of the Japanese code conversion program from the storage unit 20 and writes it in the main memory (not shown). Be done. Next, the Japanese code conversion processing unit 10 reads the setting state of the dip switch 30 and determines the Japanese code system of the conversion source and the conversion destination.
A state of waiting for an input from the data input / output processing unit 40 is entered. On the other hand, the external computer 50 checks the setting state of the DIP switch 30 of this device before sending the Japanese code. When a Japanese code based on a Japanese code system different from the conversion source Japanese code system preset by the DIP switch 30 is transmitted, the code conversion process is changed prior to the Japanese code. Output a command signal.

The discriminating means 11 discriminates the Japanese code system of the change source according to the input change command of the code conversion process. Based on this determination result, the switching unit 13 switches the Japanese code system of the conversion source of the Japanese code conversion table of the Japanese code conversion table storage unit 20. On the other hand, if there is no code conversion process change command, the conversion source Japanese code is sent as it is from the external computer 50 without outputting the code conversion process change command.

In this way, the data input / output processing unit 40
When a Japanese code is input to the Japanese code conversion processing unit 10 via the, the Japanese code conversion processing unit 10 reads the input Japanese code byte by byte, and the Japanese code is converted into a Japanese code conversion table. Match with the Japanese code of the conversion source. If there is a corresponding Japanese code, the corresponding Japanese code of the conversion destination is read, and this Japanese code is buffered in the buffer memory set in the main memory (not shown). On the other hand, if there is no corresponding Japanese, the Japanese code of the conversion source is returned to the external computer 50 as it is through the data input / output processing unit 40. Such code conversion processing is performed for all the input Japanese codes, and if there is a corresponding Japanese code, it is sequentially buffered in the buffer memory in the same manner as above. After the code conversion process is completed, the buffered Japanese code after conversion is output to the external device via the data input / output processing unit 40.

In the above-mentioned device, since the code conversion is performed by referring to the code conversion table between the plurality of Japanese code systems, the conversion of the Japanese code system of the conversion source and the Japanese code system of the conversion destination can be performed. Code conversion can be performed easily and quickly without considering the type. Also,
In this embodiment, a Japanese code conversion processing unit 1 provided in the device
0, the conversion process is performed and the external computer 50
Since the conversion processing can be performed without going through the CPU on the side, the processing speed on the external computer 50 side can be improved. Furthermore, if a DIP switch is used as the designation means, it is possible to easily switch and set the Japanese code system of the conversion source and the conversion destination. Furthermore, when the discrimination means 11 and the switching means 13 are provided, even if the conversion source Japanese code system is changed, the changed Japanese code system is automatically switched. It becomes possible to perform code conversion. The present invention is not limited to the illustrated or described embodiments, but various modifications can be made within the scope of the invention. For example, in the above embodiment, an example in which the Japanese code conversion processing unit 10 is provided with the functions of the discrimination unit 11 and the switching unit 13 has been described, but these functions are not always necessary. In this case, if the Japanese code system sent from the external computer is not the designated conversion source Japanese code, the conversion source Japanese code may be transmitted as it is without performing the code conversion process.

[0021]

According to the Japanese code converter according to the first aspect of the present invention, the code conversion is performed by referring to the code conversion table between a plurality of Japanese code systems, and the Japanese provided in this apparatus is also used. Since the conversion processing is performed independently by the code conversion processing unit, code conversion between different Japanese code systems can be performed easily and in a short time, and the processing speed of external devices can be prevented from decreasing. You can

According to the Japanese code conversion device described in claim 2, in addition to the effect obtained in claim 1, the Japanese code system of the conversion source and the conversion destination can be easily switched and set.

According to the Japanese code conversion device described in claim 3, in addition to the effect obtained in claim 1 or 2, even when the conversion source Japanese code system is changed, It will be possible to automatically switch to the Japanese code system of to perform code conversion.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a Japanese code conversion device as one embodiment.

[Explanation of symbols]

 10 Japanese Code Conversion Processing Unit 11 Discrimination Means 12 Conversion Means 13 Switching Means 20 Storage Unit 30 DIP Switch 40 Data Input / Output Processing Unit 50 External Computer

Claims (3)

[Claims] 1. A Japanese code conversion device for converting a code between a plurality of Japanese code systems in which different codes are added to the same Japanese, and the Japanese code system of the conversion source and the Japanese system of the conversion destination. Based on the specifying means for specifying the code system in advance, the storage means storing the code conversion table between the plurality of Japanese code systems, and the code conversion table stored in the storage means,
A Japanese code conversion device comprising a conversion means for performing code conversion between the specified Japanese code systems. 2. The Japanese code conversion device according to claim 1, wherein the designation means is a DIP switch for setting a conversion source Japanese code system and a conversion destination Japanese code system. 3. A discriminating means for discriminating the Japanese code system of the conversion source, and when the discrimination shows that the Japanese code system of the conversion source is different from the one designated by the designating means, the Japanese language of the conversion source is concerned. 3. The Japanese code conversion device according to claim 1, further comprising switching means for switching the code system to another Japanese code system.