JPH05276550A - Station data backup system - Google Patents

Station data backup system

Info

Publication number
JPH05276550A
JPH05276550A JP7188892A JP7188892A JPH05276550A JP H05276550 A JPH05276550 A JP H05276550A JP 7188892 A JP7188892 A JP 7188892A JP 7188892 A JP7188892 A JP 7188892A JP H05276550 A JPH05276550 A JP H05276550A
Authority
JP
Japan
Prior art keywords
data
storage device
station data
external storage
exchange
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.)
Withdrawn
Application number
JP7188892A
Other languages
Japanese (ja)
Inventor
Hisayuki Mori
久幸 森
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
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 filed Critical NEC Corp
Priority to JP7188892A priority Critical patent/JPH05276550A/en
Publication of JPH05276550A publication Critical patent/JPH05276550A/en
Withdrawn legal-status Critical Current

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  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To decrease a time required for backing up station data for an exchange and to reduce the storage capacity of an external storage device required for the backup. CONSTITUTION:When consecutive station data of the same content are in existence in a main storage device of an exchange, the structure of the consecutive station data of the same content is converted into a data structure in which the consecutive data are arranged into one data (1), the converted data are transferred to an external storage device connecting to the exchange (2), the converted data are read from the external device at up-loading from the external storage device (3), inverse conversion is applied to the data to restore the original data and they are set to a main storage device.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は蓄積プログラム制御式電
子交換機における局データバックアップ方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a station data backup system in a stored program control type electronic exchange.

【０００２】[0002]

【従来の技術】従来の電子交換機の局データバックアッ
プ方式では、この交換機の主記憶装置（メインメモリ）
内の番地とデータの内容をそのまま中央制御装置の制御
によって磁気テープまたは磁気ディスク等の外部記憶装
置に蓄積する方式であった。2. Description of the Related Art In the conventional office data backup system of an electronic exchange, the main storage device (main memory) of this exchange is used.
The internal address and the contents of data were stored in an external storage device such as a magnetic tape or a magnetic disk under the control of the central control unit.

【０００３】[0003]

【発明が解決しようとする課題】上述した従来の局デー
タバックアップ方式では、メインメモリの内容を、その
まま外部記憶装置に蓄積する方式であるので、局データ
の量が多くなるにつれて、データのやりとりに要する時
間が増大し、かつ大容量の外部記憶装置を必要とすると
いう欠点があった。In the conventional station data backup method described above, the contents of the main memory are directly stored in the external storage device. Therefore, as the amount of station data increases, data is exchanged. There is a drawback that the time required increases and a large-capacity external storage device is required.

【０００４】[0004]

【課題を解決するための手段】本発明の局データバック
アップ方式は、蓄積プログラム制御式の交換機における
局データバックアップ方式において、前記交換機の主記
憶装置内に同一内容の連続した局データが存在する場
合、この同一内容の連続した局データを一つにまとめた
データ構造に変換し、この変換されたデータを前記交換
機に接続されている外部記憶装置へ転送し、この外部記
憶装置からのロード時、前記変換されたデータを前記外
部記憶装置から読込み、前記変換と逆の変換を行い元の
データを求め前記主記憶装置に局データとして設定する
構成である。The station data backup method of the present invention is a station data backup method in a storage program control type exchange, in which continuous station data having the same content exists in the main memory of the exchange. , Converting the continuous station data of the same content into a single data structure, transferring the converted data to an external storage device connected to the exchange, and when loading from the external storage device, It is a configuration in which the converted data is read from the external storage device, original data is obtained by performing conversion reverse to the conversion, and is set as station data in the main storage device.

【０００５】[0005]

【実施例】次に、本発明について図面を参照して説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

【０００６】図１は本発明の一実施例を説明するための
図である。電子交換機のメインメモリ上に収容されてい
る局データを中央制御装置によって外部記憶装置に吸上
げる時は、（ａ）に示すようにメインメモリの内容をそ
のまま転送するのではなく、データ構造の変換を行って
（ステップ１）、転送すべきデータの圧縮を行った後
に、外部記憶装置へのデータ転送を行う（ステップ
２）。外部記憶装置から電子交換機のメインメモリへの
読込み時は、（ｂ）に示すように変換されたデータ形式
にてデータ転送され（ステップ３）、中央制御装置によ
ってデータ構造の逆変換を行って元のデータを求めてか
らメインメモリ上に書込みを行う（ステップ４）。FIG. 1 is a diagram for explaining one embodiment of the present invention. When station data stored in the main memory of the electronic exchange is transferred to the external storage device by the central control unit, the contents of the main memory are not transferred as shown in (a), but the data structure is converted. (Step 1), the data to be transferred is compressed, and then the data is transferred to the external storage device (step 2). When the data is read from the external storage device to the main memory of the electronic exchange, the data is transferred in the converted data format as shown in (b) (step 3), and the central control unit performs the reverse conversion of the data structure to perform the original conversion. Then, the data is written in the main memory (step 4).

【０００７】図２はデータ変換のアルゴリズムの一例を
示す図であり、（ａ）はメインメモリ上の元データを示
し、（ｂ）はデータ構造変換後のデータを示す。実際の
局データにおいては、同一内容のデータが多数連続する
ものが多いという特徴を生かし、連続するｎ個のデータ
を、データ内容と連続個数ｎの組合せにて表現するデー
タ構造とする。連続しない場合には別のデータ構造とす
る。同一データが連続する時はデータ構造番号ｘを
「１」連続しない時はデータ構造番号ｘを「２」とす
る。連続内容の個数または連続しない内容の個数をｙと
する。その次にデータの先頭アドレス，その次以降にデ
ータの内容を設定する。図２の例では、ｘ1 ＝２，ｙ1
＝３，ｘ2 ＝１，ｙ2 ＝９７である。このように、１０
０個あったデータが８個に圧縮されていることがわか
る。FIG. 2 is a diagram showing an example of a data conversion algorithm. (A) shows the original data on the main memory, and (b) shows the data after the data structure conversion. In the actual station data, a characteristic that many data having the same contents are continuous is used, and a continuous n data is represented by a combination of the data content and the continuous number n. If they are not continuous, use a different data structure. When the same data is continuous, the data structure number x is "1", and when it is not continuous, the data structure number x is "2". Let y be the number of continuous contents or the number of non-continuous contents. The data start address is set next, and the data contents are set after that. In the example of FIG. 2, x 1 = 2, y 1
= 3, x 2 = 1 and y 2 = 97. Like this, 10
It can be seen that the data that was 0 was compressed to 8.

【０００８】[0008]

【発明の効果】以上説明したように本発明は、交換機の
主記憶装置内に同一内容の連続した局データが存在する
場合、この連続した局データを一つにまとめたデータ構
造に変換して、外部記憶装置とのデータのやりとりを行
うことにより、外部記憶装置の必要容量の削減を行うこ
とができるという効果がある。さらに、交換機の中央制
御装置の演算速度は入出力装置の動作速度に比べて十分
に速いため、データ構造の変換に処理時間を要したとし
ても、外部記憶装置に転送すべきデータ量の減少によ
り、バックアップに要する時間を削減することができる
という効果を有する。As described above, according to the present invention, when continuous station data having the same content exists in the main memory of the exchange, the continuous station data is converted into a single data structure. By exchanging data with the external storage device, it is possible to reduce the required capacity of the external storage device. Further, the operation speed of the central control unit of the exchange is sufficiently higher than the operation speed of the input / output device, so even if it takes processing time to convert the data structure, the amount of data to be transferred to the external storage device is reduced. This has the effect that the time required for backup can be reduced.

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

【図１】（ａ）は本発明の一実施例による局データバッ
クアップ方式の外部記憶装置への吸上げ処理を示す図で
ある。（ｂ）は本発明の一実施例による局データバック
アップ方式のメインメモリへの読込み処理を示す図であ
る。FIG. 1A is a diagram showing a process of siphoning to an external storage device of a station data backup system according to an embodiment of the present invention. FIG. 7B is a diagram showing a read process to the main memory of the station data backup method according to the embodiment of the present invention.

【図２】（ａ）は本発明の一実施例によるデータ変換の
アルゴリズムを示すための元データを示す図である。
（ｂ）は本発明の一実施例によるデータ変換のアルゴリ
ズムを示すためのデータ構造変換後のデータを示す図で
ある。FIG. 2A is a diagram showing original data for showing an algorithm of data conversion according to an embodiment of the present invention.
(B) is a figure showing data after data structure conversion for showing an algorithm of data conversion by one example of the present invention.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 蓄積プログラム制御式の交換機における
局データバックアップ方式において、前記交換機の主記
憶装置内に同一内容の連続した局データが存在する場
合、この同一内容の連続した局データを一つにまとめた
データ構造に変換し、この変換されたデータを前記交換
機に接続されている外部記憶装置へ転送し、この外部記
憶装置からのロード時、前記変換されたデータを前記外
部記憶装置から読込み、前記変換と逆の変換を行い元の
データを求め前記主記憶装置に局データとして設定する
ことを特徴とする局データバックアップ方式。1. In a station data backup method in a storage program control type exchange, if continuous station data having the same content exists in the main memory of the exchange, the continuous station data having the same content are combined into one. Converting to a combined data structure, transferring the converted data to an external storage device connected to the exchange, when loading from the external storage device, read the converted data from the external storage device, A station data backup method in which original data is obtained by performing conversion reverse to the conversion and is set as station data in the main storage device.
JP7188892A 1992-03-30 1992-03-30 Station data backup system Withdrawn JPH05276550A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7188892A JPH05276550A (en) 1992-03-30 1992-03-30 Station data backup system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7188892A JPH05276550A (en) 1992-03-30 1992-03-30 Station data backup system

Publications (1)

Publication Number Publication Date
JPH05276550A true JPH05276550A (en) 1993-10-22

Family

ID=13473530

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7188892A Withdrawn JPH05276550A (en) 1992-03-30 1992-03-30 Station data backup system

Country Status (1)

Country Link
JP (1) JPH05276550A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6304475B1 (en) 1998-06-16 2001-10-16 Mitsubishi Denki Kabushiki Kaisha Switching power supply for gas laser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6304475B1 (en) 1998-06-16 2001-10-16 Mitsubishi Denki Kabushiki Kaisha Switching power supply for gas laser

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Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 19990608