JPS59123047A - Converting system of character code - Google Patents

Converting system of character code

Info

Publication number
JPS59123047A
JPS59123047A JP57232390A JP23239082A JPS59123047A JP S59123047 A JPS59123047 A JP S59123047A JP 57232390 A JP57232390 A JP 57232390A JP 23239082 A JP23239082 A JP 23239082A JP S59123047 A JPS59123047 A JP S59123047A
Authority
JP
Japan
Prior art keywords
character
terminal
character code
characters
code
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP57232390A
Other languages
Japanese (ja)
Inventor
Daiji Hasegawa
大二 長谷川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP57232390A priority Critical patent/JPS59123047A/en
Publication of JPS59123047A publication Critical patent/JPS59123047A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Information Transfer Between Computers (AREA)
  • Computer And Data Communications (AREA)
  • Document Processing Apparatus (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE:To decrease the number of memories for character code conversion table by converting the characters received from a terminal into standard character codes and the standard character codes into the characters to be transmitted to the terminal respectively after defining the standard character codes within a data network through this network. CONSTITUTION:A character code converter 200 receives characters from a signal line 110 for received characters and converts character codes based on the character code conversion information given from a signal line 120 to send the characters through a signal line 130 for transmission characters. In a data network, the converter 200 receives characters from a terminal and then the using code type of the terminal and the standard code information from the line 120 and then converts the character code of the terminal into a standard code to transmit it through the line 130. On the contrary, the converter 200 receives the characters from the data network and then receives the character code type information of the terminal as well as the standard code information through the line 120. These information are converted into the character codes to be used by the terminal and sent to the terminal through the line 130.

Description

【発明の詳細な説明】 本発明は、データ通信網において異なる文字コードを使
用する端末間の通信を可能とする文字コード変換方式に
関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a character code conversion method that enables communication between terminals using different character codes in a data communication network.

従来、データ通信網において文字コード変換が行なわれ
る場合、該データ網で使用される全コード数をnとすれ
ばそれらのコードを使用している端末を収容しているノ
ードの文字コード変換装置は少なくとも八個の文字コT
ド変換テーブルをメモリ上に具備し通信を行う2つの端
末で使用される2種のコード情報に基づき直接コード変
換を行っていた。そのため文字コード変換装置は多量の
メモリを用いなければならず、さらに相手端末の使用コ
ード情報の受信の困難さにもかかわらず常に2つの端末
の使用コード情報を必要とする欠点があった。
Conventionally, when character code conversion is performed in a data communication network, if the total number of codes used in the data network is n, the character code conversion device of the node accommodating the terminal using those codes is At least eight letter T
A code conversion table was provided in the memory, and code conversion was performed directly based on two types of code information used by two communicating terminals. Therefore, the character code conversion device must use a large amount of memory, and furthermore, it has the disadvantage that it always requires usage code information of two terminals, even though it is difficult to receive usage code information of the other terminal.

本発明の目的は、自端末コードを直接相手端末で使用さ
れている文字コードへ変換するのではなくデータ網のノ
ードで収容している端末の使用文字コードとデータ網内
標準文字コードの変換テーブルを具備した文字コード変
換装置で、データ網が端末から文字を受信した時該端末
文字コードから網内用の標準コードに変換し、データ網
が端末へ文字を送信する時さらに標準コードから該端末
の文字コードに変換することにより、上記欠点を解決し
、文字コード変換テーブル用のメモリ量を文字コード変
換装置の対象端末の文字コード数に限定し該文字コード
変換装置の文字コード情報のみで文字コード変換が行え
るようにした文字コード変換方式を提供するところにあ
る゛。
The purpose of the present invention is not to directly convert the own terminal code to the character code used by the other terminal, but to create a conversion table between the character code used by the terminal and the standard character code within the data network, which is accommodated in a node of the data network. A character code conversion device equipped with The above disadvantages are solved by converting to the character code of The purpose is to provide a character code conversion method that allows code conversion.

本発明によれば、異なる文字コード端末間の通信を可能
とする文字コード変換装置を備えたデータ網においてデ
ータ網内標準文字コードを定義し端末からの文字受信時
該端末の文字コードに基づき受信文字を前記データ網内
で標準文字コードに変換し、さらに端末への文字送信信
号線データ網内標準文字コードを該端末文字コードに変
換するようにしたものである。
According to the present invention, a standard character code within the data network is defined in a data network equipped with a character code conversion device that enables communication between terminals with different character codes, and when receiving characters from a terminal, the data is received based on the character code of the terminal. Characters are converted into standard character codes within the data network, and furthermore, the standard character codes within the data network of the character transmission signal line to the terminal are converted into the terminal character codes.

以下、本発明を、図面を参照しながら、実施例について
説明する。
Embodiments of the present invention will be described below with reference to the drawings.

第1図は、本発明の文字コード変換方式を実施する場合
のブロック図を示したものである。文字コード変換装置
200は受信文字用信号線110から文字を受信し、信
号線120からの文字コード変換情報に基づいて文字コ
ード変換を行い、その文字を送信文字用信号線130よ
り送る。データ網において文字コード変換装置200は
、端末より文字を受信すると、文字コード変換情報とし
て入力文字コード情報である該端末の使用コードタイプ
と出力文字コード情報である標準コード情報を信号線1
20より受けて端末の文字コードを標準コードに変換し
て信号線130より送信する。
FIG. 1 shows a block diagram when implementing the character code conversion method of the present invention. Character code conversion device 200 receives characters from signal line 110 for received characters, performs character code conversion based on character code conversion information from signal line 120, and sends the characters from signal line 130 for transmitted characters. When the character code conversion device 200 receives a character from a terminal in the data network, the character code conversion device 200 transmits the code type used by the terminal, which is input character code information, and standard code information, which is output character code information, as character code conversion information to the signal line 200.
20, converts the character code of the terminal into a standard code, and transmits it from the signal line 130.

逆に、文字コード変換装置200は、網内より文字を受
信すると、入力文字コードタイプとしての標準コード情
報および出力文字コード情報として文字を送信する端末
の文字コードタイプの情報を信号線120より受け、こ
れを該端末使用文字コードに変換して信号線13σより
端末に送信する。
Conversely, when the character code conversion device 200 receives a character from within the network, it receives standard code information as the input character code type and information on the character code type of the terminal transmitting the character as the output character code information from the signal line 120. , this is converted into the character code used by the terminal and transmitted to the terminal via the signal line 13σ.

第2因は本発明の文字コード変換方式を実現するコード
変換装置の実施例を示すブロック図である兄ボート30
0は入力信号線110および出力信号線130と接続し
ている双方向ド?イバ310で制御回路500と結合す
る。制御情報信号線120は兄ポー)300を経由し制
御回路500の信号解析器520と接続する。メモリ回
路400は文字コード変換テーブルごとの専用メモリ4
10 (1)〜410 (n)を文字コード数nのみ有
し制御回路500のメモリアクセス回路530よりアq
≧ クセスできる。制御回路500は%ボート結合する演算
回路5101文字コード変換情報を解析す□る信号解析
器520.メモリの変換テーブルを読むためのメモリア
クセス回路530および全体の制御を行うコントロール
回路540から構成される。信号線110からの受信文
字は、演算回路510のレジスタに蓄積され、コントー
ル回路540により変換文字を求めるため該受信文字情
報からメモリアクセス回路530を通して変換文字をメ
モリ回路400より求め、演算回路510で構成して文
字送信信号線130より出力する。
The second factor is the older brother boat 30, which is a block diagram showing an embodiment of a code conversion device that implements the character code conversion method of the present invention.
0 is a bidirectional drive connected to the input signal line 110 and the output signal line 130. The control circuit 500 is coupled to the control circuit 500 via a fiber 310 . The control information signal line 120 is connected to the signal analyzer 520 of the control circuit 500 via the older brother port 300. The memory circuit 400 has dedicated memory 4 for each character code conversion table.
10 (1) to 410 (n) are aq
≧ Can be accessed. The control circuit 500 is connected to an arithmetic circuit 5101 and a signal analyzer 520 that analyzes character code conversion information. It is composed of a memory access circuit 530 for reading a memory conversion table and a control circuit 540 for overall control. The received character from the signal line 110 is stored in the register of the arithmetic circuit 510, and in order to obtain a converted character by the control circuit 540, the received character information is passed through the memory access circuit 530, the converted character is obtained from the memory circuit 400, and the arithmetic circuit 510 calculates the converted character. It is configured and output from the character transmission signal line 130.

文字コード変換は端末文字コードのタイプ、変換タイプ
(端末文字コードから標準文字コードへの変換/標準文
字コードから端末文字コードへの変換)、および受信文
字の文字コードタイプを示す制御信号に従いコントロー
ル回路540により行われる。
Character code conversion is performed by a control circuit according to a control signal indicating the terminal character code type, conversion type (conversion from terminal character code to standard character code/conversion from standard character code to terminal character code), and character code type of the received character. 540.

以上説明したように、本発明は、メモリ上のコード変換
テーブルとして端末文字コードと標準コードの対応テー
ブルのみ有し、文字がデータ網に入る時標準コードに変
換し、網内な標準コードのままで送信し、データ網を出
る時出力端末固有の文字コードに変換することにより、
データ網にある文字変換装置の文字コード変換テーブル
用メモリを従来より大巾に減少させ、さらに通信相手端
末の使用文字コード情報なしに文字コード変換が゛行え
る効果がある。
As explained above, the present invention has only a correspondence table between terminal character codes and standard codes as a code conversion table in memory, and when a character enters a data network, it is converted to a standard code, and the standard code within the network remains unchanged. By converting it into a character code unique to the output terminal when it leaves the data network,
The memory for character code conversion tables of the character conversion device in the data network can be greatly reduced compared to the conventional method, and furthermore, character code conversion can be performed without information on the character codes used by the communication partner terminal.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の文字コード変換方式を実施する場合の
ブロック図、第2図は本発明による文字コード変換を行
う場合の文字コード変換装置の実施例を示す回路図であ
る。 110・・・入力文字信号線、 120・・・制御情報信号線、 130・・・出力文字信号線、 200・・・文字コ・−ド変換装置、 300・・・んボー)、310・・・双方向ドライバ、
400・・・メモリ回路、 410・・・変換テーブル用メモリ、 500・・・制御口゛路、510・・・演算回路、52
0・・・信号解析器、 530・・・メモリアクセス回路 540・・・コントロール回路。 代理人 弁理士 染 川 利 吉
FIG. 1 is a block diagram when implementing the character code conversion method of the present invention, and FIG. 2 is a circuit diagram showing an embodiment of a character code conversion apparatus when performing character code conversion according to the present invention. 110...Input character signal line, 120...Control information signal line, 130...Output character signal line, 200...Character code converter, 300...Number), 310...・Bidirectional driver,
400...Memory circuit, 410...Memory for conversion table, 500...Control port circuit, 510... Arithmetic circuit, 52
0... Signal analyzer, 530... Memory access circuit 540... Control circuit. Agent Patent Attorney Toshiyoshi Somekawa

Claims (1)

【特許請求の範囲】[Claims] 異なる文字コード端末間の通信を可能とする文字コード
変換装置を備えたデータ網においてデータ網内標準文字
コードを定義し端末からの文字受信時該端末の文字コー
ドに基づき受信文字を前記データ網内で標準文字コード
に変換し、さらに端末への文字送信時前記データ網内標
準文字コードを該端末文字コードに変換することを特徴
とする文字コード変換方式。
In a data network equipped with a character code conversion device that enables communication between terminals with different character codes, a standard character code within the data network is defined, and when a character is received from a terminal, the received character is converted into the data network based on the character code of the terminal. A character code conversion method characterized in that the data network standard character code is converted into a standard character code at the time of character transmission to a terminal.
JP57232390A 1982-12-28 1982-12-28 Converting system of character code Pending JPS59123047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57232390A JPS59123047A (en) 1982-12-28 1982-12-28 Converting system of character code

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57232390A JPS59123047A (en) 1982-12-28 1982-12-28 Converting system of character code

Publications (1)

Publication Number Publication Date
JPS59123047A true JPS59123047A (en) 1984-07-16

Family

ID=16938484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57232390A Pending JPS59123047A (en) 1982-12-28 1982-12-28 Converting system of character code

Country Status (1)

Country Link
JP (1) JPS59123047A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159945A (en) * 1984-08-31 1986-03-27 Hitachi Ltd System for communicating and processing plural media
JPS6162153A (en) * 1984-09-03 1986-03-31 Hitachi Ltd Software shift device between different kinds of computers
JPS64842A (en) * 1987-03-30 1989-01-05 Toshiba Corp Data transmission equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159945A (en) * 1984-08-31 1986-03-27 Hitachi Ltd System for communicating and processing plural media
JPS6162153A (en) * 1984-09-03 1986-03-31 Hitachi Ltd Software shift device between different kinds of computers
JPS64842A (en) * 1987-03-30 1989-01-05 Toshiba Corp Data transmission equipment

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