JPH0423979B2 - - Google Patents
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- Publication number
- JPH0423979B2 JPH0423979B2 JP60260208A JP26020885A JPH0423979B2 JP H0423979 B2 JPH0423979 B2 JP H0423979B2 JP 60260208 A JP60260208 A JP 60260208A JP 26020885 A JP26020885 A JP 26020885A JP H0423979 B2 JPH0423979 B2 JP H0423979B2
- Authority
- JP
- Japan
- Prior art keywords
- data
- communication information
- memory
- line
- transmission
- 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.)
- Expired - Lifetime
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- Small-Scale Networks (AREA)
- Communication Control (AREA)
Description
【発明の詳細な説明】
〔概要〕
通信回線を収容する複数の回線終端部内のデー
タ蓄積状態を、回線制御部を介してデータ転送動
作を制御する中央処理装置に通知することによ
り、中央処理装置が回線終端部および中央処理装
置内のデータ記憶手段を有効に利用可能とする。[Detailed Description of the Invention] [Summary] By notifying the central processing unit that controls the data transfer operation via the line control unit of the data accumulation state in a plurality of line termination units accommodating communication lines, the central processing unit This makes it possible to effectively utilize data storage means in the line termination section and central processing unit.
本発明はデータ通信システムにおけるデータ送
受信制御方式の改良に関する。
The present invention relates to an improvement in a data transmission/reception control method in a data communication system.
データ通信システムにおいては、収容通信回線
からの受信データ、および通信回線への送信デー
タを一旦蓄積するバツフアメモリが通信回線に対
応して設けられ、また通信回線相互間で転送され
るデータを蓄積する主記憶装置が、各通信回線に
共通に設けられている。 In a data communication system, a buffer memory is provided corresponding to the communication line to temporarily store data received from the accommodation communication line and data sent to the communication line, and a buffer memory is provided for storing data transferred between the communication lines. A storage device is provided in common to each communication line.
この種のデータ通信システムの経済性を向上さ
せる為には、各バツフアメモリの記憶容量を極力
削減し、また主記憶装置の利用効率を極力向上さ
せることが要望される。 In order to improve the economic efficiency of this type of data communication system, it is desired to reduce the storage capacity of each buffer memory as much as possible and to improve the utilization efficiency of the main storage device as much as possible.
〔従来の技術〕
第３図はこの種のデータ通信システムにおける
従来ある通信多重化装置の一例を示す図ある。[Prior Art] FIG. 3 is a diagram showing an example of a conventional communication multiplexing device in this type of data communication system.
第３図において、データ通信システムは、複数
の通信回線５を収容する通信多重化装置３と、通
信回線５相互のデータ転送動作を制御する中央処
理装置４とから構成される。更に通信多重化装置
３は、収容通信回線５毎の電気的・論理的インタ
フエース制御を行う回線終端部１と、複数の回線
終端部１を時分割的に制御する回線制御部２とか
ら構成される。 In FIG. 3, the data communication system includes a communication multiplexing device 3 that accommodates a plurality of communication lines 5, and a central processing unit 4 that controls data transfer operations between the communication lines 5. Further, the communication multiplexing device 3 includes a line termination unit 1 that performs electrical and logical interface control for each accommodated communication line 5, and a line control unit 2 that controls the plurality of line termination units 1 in a time-sharing manner. be done.
通信回線５の受信通話路５２から到着するデー
タは、それぞれ対応する回線終端部１内の受信メ
モリ１２に蓄積される。 Data arriving from the reception channel 52 of the communication line 5 is stored in the reception memory 12 in the corresponding line termination section 1, respectively.
受信メモリ１２が受信データで満杯となると、
回線終端部１は回線制御部２を介して中央処理装
置４に対し、受信データの抽出要求信号を伝達す
る。 When the reception memory 12 becomes full of reception data,
The line termination unit 1 transmits a received data extraction request signal to the central processing unit 4 via the line control unit 2.
抽出要求信号を受信した中央処理装置４は、回
線制御部２を介して要求元回線終端部１の受信メ
モリ１２に蓄積されている受信データを抽出し、
中央処理装置４内の主記憶部４１に蓄積する。 The central processing unit 4 that has received the extraction request signal extracts the received data stored in the reception memory 12 of the request source line termination unit 1 via the line control unit 2, and
It is stored in the main storage section 41 within the central processing unit 4.
一方中央処理装置４は、主記憶部４１に蓄積さ
れているデータを、回線制御部２を介して送信対
象回線終端部１内の送信メモリ１１に転送蓄積す
る。 On the other hand, the central processing unit 4 transfers and stores the data stored in the main storage unit 41 in the transmission memory 11 in the transmission target line termination unit 1 via the line control unit 2.
回線終端部１は、送信メモリ１１内に蓄積され
た総ての送信データを送信通話路５１に送出し終
わると、回線制御部２を介して中央処理装置４
に、送信データの送信完了信号を伝達する。 When the line termination section 1 finishes sending out all the transmission data accumulated in the transmission memory 11 to the transmission communication path 51, the line termination section 1 sends the transmission data stored in the transmission memory 11 to the central processing unit 4 via the line control section 2.
A transmission completion signal of the transmission data is transmitted to the terminal.
送信完了信号を受信した中央処理装置４は、主
記憶部４１内から送信メモリ１１に転送済みの送
信データを消去し、次の送信データを送信メモリ
１１に転送する。 The central processing unit 4, which has received the transmission completion signal, erases the transmission data that has already been transferred from the main storage unit 41 to the transmission memory 11, and transfers the next transmission data to the transmission memory 11.
以上の説明から明らかな如く、従来あるデータ
送受信制御方式においては、中央処理装置４は、
各回線終端部１内は受信メモリ１２おおび送信メ
モリ１１のデータ蓄積状態を、抽出要求信号およ
び送信完了信号以外に認識する手段を持たぬ為、
受信メモリ１２および送信メモリ１１の蓄積容量
を充分大きくする必要があり、また主記憶部４１
内に送信済みデータが必要以上に保持され、主記
憶部４１の利用効率を低下させる恐れがあつた。
As is clear from the above explanation, in a conventional data transmission/reception control system, the central processing unit 4
Since each line termination unit 1 does not have any means to recognize the data accumulation state of the reception memory 12 and transmission memory 11 other than the extraction request signal and transmission completion signal,
It is necessary to make the storage capacity of the reception memory 12 and the transmission memory 11 sufficiently large.
There was a risk that the transmitted data would be retained in the main storage unit 41 more than necessary, reducing the usage efficiency of the main storage unit 41.
〔問題点を解決するための手段〕
上記問題点は本発明により、通信回線を収容す
る複数の回線終端部とそれが送受信するデータの
時分割多重と分割をなす回線制御部とよりなる通
信多重化装置及びそのデータ転送動作を制御する
中央処理装置から構成され、各回線終端部は送信
メモリ、受信メモリのほか通信情報格納手段を備
え、送信メモリ内の送信データ及び受信メモリ内
の受信データのそれぞれの蓄積状態を示す通信情
報を通信情報格納手段に蓄積し、所定周期で回線
制御部に伝達する機能を有し、回線制御部は各回
線終端部から伝達された通信情報を通信情報記憶
手段に蓄積し、中央処理装置は回線制御部に蓄積
されている通信情報を通信情報抽出手段で所定周
期で抽出し、この通信情報にもとずき回線終端部
の受信メモリ内に蓄積されている受信データを回
線制御部を介し抽出し主記憶装置に記憶し、また
主記憶部に蓄積されている送信済みデータを消去
し、新らたなデータを回線制御部を介し回線終端
部の送信メモリに蓄積される機能を有することを
特徴とするデータ送受信制御方式によつて解決さ
れる。[Means for Solving the Problems] The above problems can be solved by a communication multiplexing system comprising a plurality of line termination units accommodating communication lines and a line control unit that performs time division multiplexing and division of data transmitted and received by the terminal units. Each line termination section is equipped with a transmission memory, a reception memory, and a communication information storage means, and stores the transmission data in the transmission memory and the reception data in the reception memory. It has a function of accumulating communication information indicating the accumulation status of each in the communication information storage means and transmitting it to the line control unit at a predetermined period, and the line control unit stores the communication information transmitted from each line termination unit in the communication information storage means. The central processing unit extracts the communication information stored in the line control unit at a predetermined period using communication information extraction means, and based on this communication information, the communication information is stored in the reception memory of the line termination unit. The received data is extracted via the line control unit and stored in the main memory, the transmitted data stored in the main memory is erased, and the new data is transferred via the line control unit to the transmission memory at the line end. This problem is solved by a data transmission/reception control method characterized by having a function to store data in the data transmission/reception control method.
即ち本発明によれば、中央処理装置は回線終端
部内のバツフアメモリのデータ蓄積状態を認識可
能となる為、バツフアメモリから適時受信データ
を抽出し、また適時主記憶部内の転送済みデータ
を消去し、新たな送信データをバツフアメモリに
転送することが可能となり、回線終端部内のバツ
フアメモリの記憶容量を削減可能となり、また中
央処理装置内の主記憶部を有効に利用可能とな
る。
That is, according to the present invention, since the central processing unit can recognize the data accumulation state of the buffer memory in the line termination section, it can extract the received data from the buffer memory at the appropriate time, erase the transferred data in the main memory section at the appropriate time, and create new data. transmission data can be transferred to the buffer memory, the storage capacity of the buffer memory in the line termination section can be reduced, and the main storage section in the central processing unit can be used effectively.
以下、本発明の一実施例を図面により説明す
る。第２図は本発明の一実施例による通信多重化
装置を示す図である。なお、全図を通じて同一符
号は同一対象物を示す。
An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a diagram showing a communication multiplexing device according to an embodiment of the present invention. Note that the same reference numerals indicate the same objects throughout the figures.
第２図においては、回線終端部１内には、送信
メモリ１１および受信メモリ１２がバツフアメモ
リ１００として設けられ、また通信情報レジスタ
１３および回線処理部１４が通信情報格納手段２
００として設けられている。また回線制御部２内
には、制御メモリ２１が通信情報記憶手段３００
として設けられている。更に中央処理装置４内に
は、制御部４２が通信情報抽出手段４００として
設けられている。 In FIG. 2, a transmission memory 11 and a reception memory 12 are provided as a buffer memory 100 in the line termination section 1, and a communication information register 13 and a line processing section 14 are provided in the communication information storage means 2.
It is set as 00. Further, within the line control unit 2, a control memory 21 is provided with a communication information storage means 300.
It is established as. Further, within the central processing unit 4, a control section 42 is provided as communication information extraction means 400.
第２図において、各回線終端部１内の回線処理
部１４は、送信メモリ１１内の送信データの送出
済み状態、並びに受信メモリ１２内の受信データ
の蓄積状態を示す通信情報を通信情報レジスタ１
３内に蓄積し、所定周期で回線制御部２に伝達す
る。 In FIG. 2, the line processing section 14 in each line termination section 1 transfers communication information indicating the transmitted state of the transmission data in the transmission memory 11 and the accumulation state of the received data in the reception memory 12 to the communication information register 1.
3 and is transmitted to the line control unit 2 at predetermined intervals.
回線制御部２は、各回線終端部１から伝達され
る通信情報を、制御メモリ２１に蓄積する。 The line control unit 2 stores communication information transmitted from each line termination unit 1 in the control memory 21.
中央処理装置４内の制御部４２は、回線制御部
２内の制御メモリ２１に蓄積されている通信情報
を所定周期で抽出し、中央処理装置４に通知す
る。 The control unit 42 in the central processing unit 4 extracts communication information stored in the control memory 21 in the line control unit 2 at predetermined intervals and notifies the central processing unit 4 of the extracted communication information.
中央処理装置４は、通知された通信情報に基づ
き、受信メモリ１２内に蓄積されている受信デー
タを、回線制御部２を介して抽出して主記憶部４
１に蓄積し、また主記憶部４１に蓄積されている
送信済みデータを消去し、新たなデータを回線制
御部２を介して所要の回線終端部１に転送し、送
信メモリ１１に蓄積させる。 Based on the notified communication information, the central processing unit 4 extracts the received data stored in the reception memory 12 via the line control unit 2 and stores it in the main storage unit 4.
1 and the transmitted data stored in the main storage section 41 are erased, and new data is transferred to the required line termination section 1 via the line control section 2 and stored in the transmission memory 11.
以上の説明から明らかな如く、本実施例によれ
ば、中央処理装置４は、各回線終端部１内の送信
メモリ１１および受信メモリ１２内のデータ蓄積
状態を、回線制御部２を介して常時認識している
為、適時受信メモリ１２から受信データを抽出
し、また主記憶部４１内の送信済みデータを消去
可能となる為、送信メモリ１１および受信メモリ
１２の記憶容量が必要最小限に削減され、また主
記憶部４１を有効に利用可能となる。 As is clear from the above description, according to the present embodiment, the central processing unit 4 constantly monitors the data accumulation state in the transmission memory 11 and reception memory 12 in each line termination unit 1 via the line control unit 2. Since it is recognized, the received data can be extracted from the reception memory 12 in a timely manner, and the transmitted data in the main memory section 41 can be deleted, so the storage capacity of the transmission memory 11 and the reception memory 12 can be reduced to the necessary minimum. In addition, the main storage section 41 can be used effectively.
なお、第２図はあく迄本発明の一実施例に過ぎ
ず、例えば通信多重化装置３および中央処理装置
４の構成は図示されるものに限定されることは無
く、他に幾多の変形が考慮されるが、何れの場合
にも本発明の効果は変わらない。 It should be noted that FIG. 2 is merely one embodiment of the present invention, and for example, the configurations of the communication multiplexing device 3 and the central processing unit 4 are not limited to those shown in the figure, and many other modifications may be made. However, the effects of the present invention remain the same in either case.
以上、本発明によれば、前記データ通信システ
ムにおいて、中央処理装置は回線終端部内のバツ
フアメモリのデータ蓄積状態を認識可能となる
為、バツフアメモリから適時受信データを抽出
し、また適時主記憶部内の転送済みデータを消去
し、新たな送信データをバツフアメモリに転送す
ることが可能となり、回線終端部内のバツフアメ
モリの記憶容量を削減可能となり、また中央処理
装置内の主記憶部を有効に利用可能となる。
As described above, according to the present invention, in the data communication system, the central processing unit can recognize the data storage state of the buffer memory in the line termination section, and can therefore extract received data from the buffer memory at the appropriate time and transfer it within the main storage section at a timely manner. It becomes possible to erase the transmitted data and transfer new transmission data to the buffer memory, it becomes possible to reduce the storage capacity of the buffer memory in the line termination part, and it becomes possible to effectively use the main memory part in the central processing unit.
第１図は本発明の原理を示す図、第２図は本発
明の一実施例による通信多重化装置を示す図、第
３図は従来ある通信多重化装置の一例を示す図で
ある。
図において、１は回線終端部、２は回線制御
部、３は通信多重化装置、４は中央処理装置、５
は通信回線、１１は送信メモリ、１２は受信メモ
リ、１３は通信情報レジスタ、１４は回線処理
部、２１は制御メモリ、４１は主記憶部、４２は
制御部、５１は送信通話路、５２は受信通話路、
１００はバツフアメモリ、２００は通信情報格納
手段、３００は通信情報記憶手段、４００は通信
情報抽出手段、を示す。
FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is a diagram showing a communication multiplexing device according to an embodiment of the present invention, and FIG. 3 is a diagram showing an example of a conventional communication multiplexing device. In the figure, 1 is a line termination section, 2 is a line control section, 3 is a communication multiplexing device, 4 is a central processing unit, and 5 is a communication multiplexing device.
1 is a communication line, 11 is a transmission memory, 12 is a reception memory, 13 is a communication information register, 14 is a line processing section, 21 is a control memory, 41 is a main storage section, 42 is a control section, 51 is a transmission channel, and 52 is a communication line. receiving channel,
100 is a buffer memory, 200 is communication information storage means, 300 is communication information storage means, and 400 is communication information extraction means.
Claims (1)
が送受信するデータの時分割多重と分配をなす回
線制御部とよりなる通信多重化装置及びそのデー
タ転送動作を制御する中央処理装置から構成さ
れ、各回線終端部は送信メモリ、受信メモリのほ
か通信情報格納手段を備え、送信メモリ内の送信
データ及び受信メモリ内の受信データのそれぞれ
の蓄積状態を示す通信情報を通信情報格納手段に
蓄積し、所定周期で回線制御部に伝達する機能を
有し、回線制御部は各回線終端部から伝達された
通信情報を通信情報記憶手段に蓄積し、中央処理
装置は回線制御部に蓄積されている通信情報を通
信情報抽出手段で所定周期で抽出し、この通信情
報にもとずき回線終端部の受信メモリ内に蓄積さ
れている受信データを回線制御部を介し抽出し主
記憶装置に記憶し、また主記憶部に蓄積されてい
る送信済みデータを消去し、新らたなデータを回
線制御部を介し回線終端部の送信メモリに蓄積さ
せる機能を有することを特徴とするデータ送受信
制御方式。1 Consists of a communication multiplexing device consisting of a plurality of line termination sections accommodating communication lines and a line control section performing time-division multiplexing and distribution of data transmitted and received by the same, and a central processing unit controlling the data transfer operation, Each line termination section is provided with a communication information storage means in addition to a transmission memory and a reception memory, and stores communication information in the communication information storage means indicating the respective storage states of transmission data in the transmission memory and reception data in the reception memory, It has a function of transmitting the communication information to the line control unit at a predetermined period, and the line control unit stores the communication information transmitted from each line terminal in the communication information storage means, and the central processing unit stores the communication information stored in the line control unit. information is extracted at a predetermined period by a communication information extraction means, and based on this communication information, received data stored in a reception memory of a line termination section is extracted via a line control section and stored in a main storage device; The data transmission/reception control system also has a function of erasing transmitted data stored in the main storage section and storing new data in the transmission memory of the line termination section via the line control section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60260208A JPS62120761A (en) | 1985-11-20 | 1985-11-20 | Data transmission and reception control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60260208A JPS62120761A (en) | 1985-11-20 | 1985-11-20 | Data transmission and reception control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62120761A JPS62120761A (en) | 1987-06-02 |
| JPH0423979B2 true JPH0423979B2 (en) | 1992-04-23 |
Family
ID=17344841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60260208A Granted JPS62120761A (en) | 1985-11-20 | 1985-11-20 | Data transmission and reception control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62120761A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009159467A (en) * | 2007-12-27 | 2009-07-16 | Fujitsu Ltd | Wireless communication apparatus, wireless communication program, and wireless communication method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56119559A (en) * | 1980-02-26 | 1981-09-19 | Nec Corp | Communication control device |
| JPS5972539A (en) * | 1982-10-18 | 1984-04-24 | Nippon Telegr & Teleph Corp <Ntt> | Data transfer system |
-
1985
- 1985-11-20 JP JP60260208A patent/JPS62120761A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62120761A (en) | 1987-06-02 |
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