JPS6337735A - Data conversion system in communication processor - Google Patents

Abstract

PURPOSE:To cope with the alteration of a connection line and a control procedure by modifying a data conversion table by storing data after conversion in a storage area for converted data which is specified with data conversion definition information. CONSTITUTION:A communication control part 2 stores received data temporarily in a storage part 4 for data to be converted, registers conversion definition information including the base address of the data conversion table 5 where the storage start address of the data storage part 4, the number of characters, the storage start address of the storage part 6, and a conversion method to be applied to the data to be converted are registered, and then starts a conversion processing part 1. The conversion processing part reads the data to be converted, character by character, based on corresponding information read out of a data conversion definition information storage part 3 to convert or delete codes or perform data conversion including the addition of a specific code according to the data conversion table, and stores the converted data in the storage area for the converted data specified by the data conversion definition information.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a data conversion method used within a communication processing device installed between a host computer and a communication line.

2. Description of the Related Art In a data processing system configured by connecting a host computer and a terminal device via a communication line, a communication processing device is installed between the host computer and the communication line.

One of the functions of this communication processing device is code conversion for data received from a communication line, deletion of predetermined characters such as time matching characters, code conversion for data sent from a host computer, and time required for non-procedural terminals. It has data conversion functions such as adding matching characters.

Conventionally, the data conversion function has been realized in hardware in an interface section with a line, such as a line connection section.

Problems to be Solved by the Invention In the conventional data conversion method in the communication processing device described above, the data conversion function is implemented in hardware at the interface with the line, so it is difficult to change the accommodated line or change the control procedure. There is a problem that it is not possible to respond flexibly to such matters.

According to the data conversion method in the communication processing device according to the present invention, it is possible to specify the storage area and number of characters for data to be converted, specify the storage area for converted data, and use a data conversion table. Corresponding information is written in an area in which data conversion definition information including storage area specification is written, a data conversion table in which a predetermined data conversion method is registered, a data conversion processing section, and an area for the above data conversion definition information. A communication control unit is provided in the main storage device to start the data conversion processing unit after the data is input.

When activated by the communication control unit, the data conversion processing unit reads data to be converted character by character based on the corresponding information read from the storage area of the data conversion definition information, and performs code conversion and deletion according to the data conversion table. , or by performing data conversion processing that includes adding a predetermined code and storing the converted data in the converted data storage area specified by the data conversion definition information above, the connection lines and control procedures can be improved. It is configured to enable flexible response to changes by changing the data conversion table.

Hereinafter, the operation of the present invention will be explained in detail together with examples.

Embodiment FIG. 1 is a conceptual diagram of a data conversion method according to an embodiment of the present invention, where l is a conversion processing section, 2 is a communication control section, 3 is a conversion definition information storage section, and 4 is a conversion target data storage section. , 5 is a data conversion table, and 6 is a converted data storage unit, all of which are provided on the main memory in the communication control device installed between the host computer and each line. 1 includes a conversion target data reading section 11, a conversion section 12, and a converted data registration section 13.

First, the communication control unit 2 temporarily stores received data from a communication line or terminal device, or transmitted data from a host computer in the conversion target data storage unit 4. Next, the communication control unit 2 determines the storage start address and number of characters of the conversion target data storage unit 4, the storage start address of the converted data storage unit 6 for storing the converted data, and the conversion to be applied to the conversion target data. After registering the conversion definition information including the base address of the data conversion table 5 in which the method is registered in the storage section 3, the conversion processing section 1 is activated.

The data conversion table 5 includes instructions for code conversion, deletion, or addition of a predetermined code for each data to be converted, a code to be converted in the case of code conversion, and a predetermined code to be added in the case of code addition. and the number of characters are registered in advance. Generally, a plurality of data conversion tables are prepared for each different type of control procedure or terminal device, and the communication control unit 2 specifies which data conversion table to use based on its storage start address.

The conversion processing unit l activated by the communication control unit 2 first activates the conversion target data reading unit 1. The activated conversion target data reading unit 1 starts data reading processing according to the procedure illustrated in the flowchart of FIG.

First, in step 21, the conversion target data reading unit 2 reads the storage start address of the conversion target data storage unit 4 from the conversion definition information storage area 3, and then proceeds to the next step 22, in which the converted data is loaded. The address of the new data to be read is determined by adding the addresses for the number of characters. The conversion target data reading unit 2 performs the next step 23.
After reading the corresponding character from the storage address of the new data to be read, the process advances to step 24, activating the converting section 2, passing the data to be converted, and terminating the data reading process.

Note that, in step 22, the conversion target data reading unit 2 determines that the number of characters of the converted data is equal to the number of characters in the conversion definition information storage unit 3.
If it is determined that the number of characters exceeds the number of characters of the conversion target data registered in the conversion target data, the process proceeds to step 25, where the communication control unit 2 is notified of the end of the conversion process and the entire conversion process is ended.

When the conversion unit 12 is activated by the conversion target data reading unit 11, it starts conversion processing according to the procedure illustrated in the flowchart of FIG.

First, in the first step 31, the conversion unit 12 reads the base address of the data conversion table registered in the conversion definition information storage unit 3, and then in the next step 32.
Then, correspondence information such as the processing type corresponding to the code of the conversion target data passed from the conversion target data reading unit 11 is read from the data conversion table 5. Next, the converter 12
, the process proceeds to step 33 to determine the processing type, and if it is code conversion processing, proceeds to step 34, obtains the converted code, and then proceeds to step 36, starts the converted data registration unit 13, and processes the converted data. Pass the code and finish the conversion process.

On the other hand, if the processing type is addition of a predetermined character code, the conversion unit 12 proceeds from step 33 to step 35, acquires the character code and number of characters to be added, starts the converted data registration unit 36, and adds the predetermined character code. Pass the character code and number of characters to complete the conversion process. Further, if the processing type is character code deletion, the conversion unit 12 proceeds from step 33 to step 37, starts the data reading unit 1, and ends the conversion process.

When the converted data registration unit 13 is activated by the conversion unit 12, it starts data registration processing according to the procedure illustrated in the flowchart of FIG.

First, the converted data registration unit 13 performs the first step 4.
1, the start address of the converted data storage section 6 is read from the conversion definition information storage area 3, and then step 4
Proceeding to step 2, a new storage address for the converted data is calculated by adding the address for the number of registered characters to the storage start address. The converted data registration unit 13 proceeds to the next step 43 and stores the corresponding converted data at the new converted data storage address. Finally, in step 44, the conversion target data reading unit 11 is activated,
The registration process of converted data ends.

The data conversion process by the conversion processing unit 1 is completed by repeating the above operation for the number of characters to be converted.

Effects of the Invention As explained in detail above, the data conversion method of the present invention has a configuration in which data conversion is executed centrally in the data conversion processing unit in the communication processing device, so there is no need for hardware in the line interface unit, etc. Unlike the conventional method,
It is possible to flexibly respond to changes in control procedures and accommodation lines by changing the data conversion table.

In addition, compared to the conventional method in which data conversion is performed in a distributed manner at the interface with each line, there is also the advantage that costs can be reduced due to centralization.

[Brief explanation of drawings]

FIG. 1 is a conceptual diagram of a data conversion method in a communication processing device according to an embodiment of the present invention, and FIGS. 2 to 4 are flowcharts illustrating processing procedures of each part of the conversion processing unit 1 of FIG. 1. be. 1. Conversion processing unit, 2. Communication control unit, 3. Conversion definition information storage unit, 4. Conversion target data storage unit, 5. Data conversion table, 6. Converted data storage unit, 11.
- Conversion target data reading section, 12... Conversion section, 13...
Converted data registration section.

Claims (1)

[Scope of Claims] In a communication processing device installed between a host computer and a communication line, specifying a storage area and number of characters for data to be converted, specifying a storage area for converted data, and specifying a data conversion table storage area. After writing the corresponding information into the area where the data conversion definition information containing is written, the data conversion table where the predetermined data conversion method is registered, the data conversion processing section, and the storage area of the data conversion definition information, and a communication control section for activating the data conversion processing section in the main storage device, and when the data conversion processing section is activated by the communication control section, the data conversion processing section converts the data into the corresponding information read from the storage area of the data conversion definition information. Read the data to be converted character by character based on the
Perform data conversion including code conversion, deletion, or addition of a predetermined code according to the data conversion table, and execute data conversion processing to store the converted data in the converted data storage area specified by the data conversion definition information. A data conversion method within a communication processing device, characterized in that: