JP2570977B2 - Japanese code converter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

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

Conventionally, in the code conversion between Japanese code systems, a person who intends to use Japanese information creates a conversion program corresponding to the Japanese code system to be converted, and creates a conversion program. OS (opera
CPU (central processing u) under the control of the
The code conversion was performed using the processing power of nit).

Further, a conversion program for converting a specific conversion source Japanese code system and a conversion destination Japanese code system one-to-one is created in advance, and this is recorded in advance on a floppy disk or the like, for example. deep. 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 a main memory of a computer, started up and executed.

[0005]

However, in order to individually create a conversion program, a conversion source code conversion system must be checked, a conversion destination code conversion system must be checked, and a specific programming language must be changed. It is necessary to select and use. 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. Furthermore, since the CPU of the information processing system is used, there is a disadvantage that the operation processing speed of another processing program is reduced.

On the other hand, if a method for preparing a code conversion program for converting between a specific Japanese code system of a conversion source and a specific Japanese code system of a conversion destination in advance is used, the above-mentioned individual code conversion programs can be used. The time can be shortened as compared with the case of creating. However, in this case, complicated work such as selection of a floppy disk or the like on which a code conversion program is recorded and start-up thereof are required. Further, similarly to the above, the CP of the information processing system side
Since U is used, problems such as lowering the operation processing speed of other processing programs remain unsolved.

Accordingly, an object of the present invention is to provide a Japanese code conversion apparatus which can easily and quickly convert codes between different Japanese code systems and does not reduce the processing speed of an external device. .

[0008]

A Japanese code conversion apparatus according to the present invention converts a Japanese code of an input Japanese code system into a Japanese code of another Japanese code system different from the Japanese code system. The storage means 20 stores code conversion information between a plurality of Japanese code systems, and stores initial values of a Japanese code system of a conversion source and a Japanese code system of a conversion destination. The DIP switch 30 to be set and the initial value of the Japanese code system of the conversion source set by the DIP switch 30 are read, and a Japanese code of a Japanese code system different from the read Japanese code system of the conversion source is input. A change command output means 50 for outputting a change command for the code conversion process, and determining whether the type of another Japanese code system after the change is based on the change command. Means 11, a switching means 13 for switching the conversion source information Japanese language system to another determined Japanese language system, and a Japanese language of the conversion source Japanese language system initially set by the DIP switch 30. The code is converted to the Japanese code of the Japanese code system of the conversion destination initially set by the dip switch 30 based on the code conversion information. Word code,
The conversion means 12 is provided to convert the Japanese code of the conversion destination Japanese code system initially set by the dip switch 30 based on the code conversion information.

[0009]

When the Japanese code system of the conversion source is the system initially set by the dip switch, the change command output means does not output the change command of the code conversion process. As a result, without discriminating the type of the input Japanese code system, the Japanese code of the conversion source Japanese code system initially set by the DIP switch is replaced by the conversion destination Japanese code initially set by the DIP switch. Converts to the Japanese code of the code system based on the code conversion information.

If the Japanese code system of the conversion source is different from the system initially set by the dip switch, a change command for the code conversion process is output from the change command output means.
This determines the type of the other Japanese code system after the change, and switches the Japanese code of the other Japanese code system to the Japanese code of the conversion destination Japanese code system initially set with the DIP switch Is converted based on the code conversion information.

[0011]

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 apparatus includes a Japanese code conversion processing unit 10, a storage unit 20 connected thereto,
A dip switch 30 provided on a part of a housing or a board (not shown) and an external computer 50 for transmitting Japanese codes and the like, so that a user of the apparatus can arbitrarily switch settings. I send and receive the Japanese code
And a data input / output processing unit 40 having an / O circuit.

The storage unit 20 stores code conversion information for converting the Japanese code of the conversion source Japanese code system input from the external computer 50 into the Japanese code of the conversion destination Japanese code system. A word code conversion program is stored in the storage means.
ad only memory).

The above-mentioned code conversion information includes, for example, a code conversion table which stores, in a tabular form, a code corresponding to a specific Japanese language and a code unique to each Japanese code system. This is a conversion formula that associates each other's codes, so that when a Japanese code of one Japanese code system is specified, the Japanese codes of all other Japanese code systems are uniquely determined. I have.

The DIP switch 30 is input via the data input / output processing unit 40 and is, for example, a conversion source Japanese code system (for example, JI
S etc.) and the Japanese code system of the conversion destination (for example, EUC
Etc.) can be set.

The external computer 50 reads the initial value of the conversion source Japanese code system set by the DIP switch 30 and outputs a Japanese code of a Japanese code system different from the read conversion source Japanese code system. In this case, it has a function of outputting a change command of the code conversion process (change command output means), and has a built-in central processing unit (CPU) and an input / output control device.

The above-mentioned Japanese code conversion program causes the Japanese code conversion processing unit 10 to read a specific Japanese code system from the storage unit 20 and to execute a specific function.

A Japanese code conversion processing unit 10 serves as a control center of the apparatus, and realizes the following functions based on a Japanese code conversion program by a CPU (Central Proc).
essing Unit) (not shown).

(1) A function of determining the type of another Japanese code system after the change based on the change instruction of the code conversion process output from the change instruction output means 50 (determination means 11). (2) A function of switching the Japanese code system as the conversion source of the code conversion information to another Japanese code system determined by the determination means 11 (switching means 13). (3) The Japanese code of the conversion source Japanese code system initially set by the DIP switch 30 is converted to the Japanese code of the conversion destination Japanese code system initially set by the DIP switch 30 based on the code conversion information. Convert and also
A function (conversion) of converting a Japanese code of another Japanese code system switched by the switching means 13 into a Japanese code of a Japanese code system of a conversion destination initially set by the dip switch 30 based on the code conversion information. Means 12).

Next, the operation of the Japanese-language code converter having the above structure will be described. When the power of the apparatus is turned on, after initialization of each unit is performed, a reading operation of a Japanese code conversion program from a storage unit 20 is executed by a Japanese code conversion processing unit 10, and a main memory (not shown) is read. Is written to.

Next, the Japanese code conversion processing unit 10 reads the setting state of the DIP switch 30, sets the conversion source and conversion destination Japanese code systems, and waits for an input from the data input / output processing unit 40. Becomes

On the other hand, the external computer 50 checks the setting state of the DIP switch 30 of the present apparatus before transmitting the Japanese code. When transmitting a Japanese code based on a Japanese code system different from the Japanese code system of the conversion source initially set by the DIP switch 30, the code conversion process must be changed prior to the Japanese code. Send command.

The discriminating means 11 discriminates the conversion source Japanese code system in accordance with the input code conversion processing change instruction. On the basis of the result of this determination, the switching means 13 sets the storage unit 2
The conversion source Japanese code system of the code conversion table of 0 is switched.

On the other hand, when the external computer 50 sends out a Japanese code based on the same Japanese code system as the conversion source Japanese code system initially set by the DIP switch 30, a change instruction of the code conversion process is issued. The Japanese code of the conversion source is transmitted as it is without outputting.

As described above, 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 one byte at a time, and converts the Japanese code into a Japanese code conversion table. Check 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 a buffer memory set in the main memory (not shown). On the other hand, if there is no corresponding Japanese, the conversion source Japanese code is returned to the external computer 50 via the data input / output processing unit 40 as it is. Such a code conversion process 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 described above. After completion of the code conversion process, the buffered converted Japanese code is output to the external computer and other external devices via the data input / output processing unit 40.

In the above-described apparatus, since the code conversion is performed with reference to the code conversion information among a 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 is performed. Code conversion can be performed easily and quickly without being aware of the type.

The Japanese language code conversion processing unit 10 provided in the apparatus performs the Japanese language code conversion processing and can perform the conversion processing without the intervention of the CPU of the external computer 50. Side processing speed can be improved.

Since the initial values of the source and destination Japanese code systems are set by the dip switches, the user of the present apparatus can easily switch and set these Japanese code systems.

Since the discriminating means 11 and the switching means 13 are provided, even if the original Japanese code system is changed, the code is automatically switched to the changed Japanese code system. A conversion can be performed. In addition,
The invention is not limited to the illustrated or described embodiment,
Various modifications can be made within the scope of the gist. In the above description, an external computer connected to the outside of the apparatus has been described as an example of the change command output means. However, a configuration in which the means is provided inside the apparatus may be employed.

[0030]

According to the Japanese language code converter of the present invention, the following effects can be obtained. If the Japanese code system of the conversion source and the Japanese code system of the conversion destination are initially set with DIP switches, and the Japanese code of the initially set Japanese code system is to be converted, Since the code conversion is performed immediately without determining the type of the system, the conversion can be performed in a short time.

Even if the Japanese code system of the conversion source is different from the one initially set by the dip switch, the conversion source code of the conversion source is changed based on the code conversion processing change command sent prior to the Japanese code of the system. Since the type of the Japanese code system can be determined, code conversion can be performed by automatically switching to the determined other Japanese code system.

Since the initial values of the Japanese code system at the conversion source and the conversion destination are set by the dip switches, the user of the present apparatus can easily switch and set these Japanese code systems.

The Japanese code sent from the external device is
Since the conversion processing can be performed by the present apparatus without using the CPU of the external apparatus, the processing speed of the external apparatus can be improved.

Since the code conversion process is performed by the present device independently of the external device, the code conversion between different Japanese code systems can be performed in a short time.

[Brief description of the drawings]

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Japanese code conversion processing part 11 Judgment means 12 Conversion means 13 Switching means 20 Storage part (storage means) 30 Dip switch 40 Data input / output processing part 50 External computer (change command output means)

Claims (1)

(57) [Claims] 1. A Japanese code converter for converting an input Japanese code of a Japanese code system into a Japanese code of another Japanese code system different from the Japanese code system and outputting the converted Japanese code. A storage means for storing code conversion information between a plurality of Japanese code systems, a dip switch for setting initial values of a source Japanese code system and a destination Japanese code system, A change instruction that reads the initial value of the Japanese code system of the conversion source and outputs a code conversion processing change instruction when a Japanese code with a Japanese code system different from the read Japanese code system of the conversion source is input. Output means; determining means for determining the type of another Japanese code system after the change based on the change instruction; Switching means for switching the code system to another determined Japanese code system, and a conversion destination Japanese code initially set by the DIP switch to the conversion destination Japanese code set by the DIP switch. Based on the above code conversion information, the Japanese code of another Japanese code system switched by the switching means is converted into the Japanese code of the code system, and the Japanese code of the conversion destination initially set by the dip switch A conversion device for converting a Japanese code in a system based on the code conversion information.