JPS5887943A - Loop transmission controlling system - Google Patents

Loop transmission controlling system

Info

Publication number
JPS5887943A
JPS5887943A JP56185384A JP18538481A JPS5887943A JP S5887943 A JPS5887943 A JP S5887943A JP 56185384 A JP56185384 A JP 56185384A JP 18538481 A JP18538481 A JP 18538481A JP S5887943 A JPS5887943 A JP S5887943A
Authority
JP
Japan
Prior art keywords
data
response
section
reception
loop
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
JP56185384A
Other languages
Japanese (ja)
Inventor
Hisashi Matsumura
松村 久司
Toyokazu Hashimoto
橋本 豊和
Masahiko Kida
木田 正彦
Hiroyuki Wada
和田 宏行
Kazufumi Ishikawa
石川 和文
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56185384A priority Critical patent/JPS5887943A/en
Publication of JPS5887943A publication Critical patent/JPS5887943A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42Loop networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To quickly confirm response, by fetching data when the data is addressed to a device itself, at the same time writting a reception response pattern in a response set field, and fetching the response set field into a buffer when the data is transmitted from the device itself, in a loop transmission system. CONSTITUTION:Data transmitted from an optical fiber 2 is photoelectrically converted at a demodulation section 3 and given to a transmission/reception section 5. The reception section discriminates whether the data is transmitted to the device itself or from the device itself, and when the data is addressed to the device itself, the data are transferred to data reception buffers 6, 3, the reception confirming pattern is set to the response field and transmitted on a loop via a modulation section. When the data is transmitted from the device itself, an address section, control section, and response set field only of data are fetched into response buffers 6, 1, and the data are not transferred on the loop. Thus, the response confirming time can be decreased and the throughput can be improved.

Description

【発明の詳細な説明】 この発明はループ伝送制御方式に関するものである。[Detailed description of the invention] This invention relates to a loop transmission control system.

従来より、複数個の通信装置が、ループ状に接続されて
、各通信装置間でデータの伝送を行1゜うループ状伝送
システムに於ては、データ送信後の応答確認は次の様な
方法1てよって行っていた。
Conventionally, in a loop transmission system in which multiple communication devices are connected in a loop and data is transmitted between each communication device, response confirmation after data transmission is performed as follows. I followed method 1.

(a)データ受信側曲信装置ばはデータ受信(父バッフ
ァストレージ内のデータを調べ、その後受信応I。
(a) The data receiving device receives data (examines the data in the buffer storage, and then responds to the reception).

答を作1jV l、、データ送信(i10通偏装置fに
向けて送信する。
Create the answer and send the data to the i10 communication device f.

(b)データ受信側通信装置lはデータ受信と同時に核
データに応答を設定し、送出する。
(b) The data receiving side communication device 1 sets a response in the core data and sends it out at the same time as receiving the data.

データ送信側通信装置(d自装置が送出したデータを受
信した時は、該データをすべてバッファ内に取り込むと
同時に該データの送出をやめる。
When the data sending side communication device (d) receives the data sent by its own device, it takes all the data into the buffer and stops sending the data at the same time.

上記の如き従来の伝送方式(a)ではデータ送信・後、
応答受信までの確読が遅い。また臥]未方式(b)では
応答受信用のバッファが大賞に必要といらう問題点があ
り、データのスルーブツトの低下、ハードウェアの物量
の増加によるコスト尚につなかっていた。
In the conventional transmission method (a) as described above, after data transmission,
Confirmation until response reception is slow. In addition, in the non-method (b), there is a problem in that a buffer for receiving responses is required for the grand prize, which leads to a decrease in data throughput and an increase in the amount of hardware, resulting in further costs.

この発明の目的とするところは、前記の如き従来の間鴨
点を除去するものであり、ループ状、。
The object of the present invention is to eliminate the conventional interlocking points as described above, and to remove the loop-shaped dots.

伝送システムのデータのスループットの向上、ハードウ
ェアの物情の削減を行うものである。。
This improves the data throughput of the transmission system and reduces the hardware requirements. .

この発明の特徴とするところは、ループ状化。The feature of this invention is that it is loop-shaped.

送システムに於て、データ受信側通信装置は自。In the transmission system, the communication device on the data receiving side is self-contained.

装置宛てのデータを受信した時は該データを鴨。When data addressed to the device is received, the data is sent as a duck.

装置内バッファに取り込むと同時に、該データの応答設
定用フィールドに受信応答パターンを設足17、次下流
通信装置!tに送信し、データ送慣元通伯装置イは、自
装置が送出したデータを受信した時は、該データのアド
レス部、コントロール部および応答設定用フィールド部
のみをデータ受信用とは別に設けたバッファに取り込み
、応答確認を行うことにより、応答確認時間を短縮する
ことによるスルプツトの向上応答受信用。
At the same time as loading the data into the device's internal buffer, a reception response pattern is set in the response setting field of the data 17, the next downstream communication device! When the device A receives the data sent by its own device, it sets only the address section, control section, and response setting field section of the data separately from those for data reception. This function improves response reception by shortening the response confirmation time by importing the received data into a buffer and confirming the response.

バッファを削減することによるハードウェア物5量の削
減という効果を有することである。
This has the effect of reducing the amount of hardware by reducing the number of buffers.

次に本発明の実施例につき、図面を用いて詳。Next, embodiments of the present invention will be described in detail with reference to the drawings.

細に説明する。Explain in detail.

第1図は不発明の一実施例である通信装置のブロック図
である。            1゜通信装置1は光
ファイバ2により相手通信製。
FIG. 1 is a block diagram of a communication device that is an embodiment of the invention. 1゜The communication device 1 is connected to the other party through the optical fiber 2.

置とループ状に接続され、光ファイバ°2はそれ。It is connected in a loop with the optical fiber °2.

それ光→電気信号への変換及び電気信号の復調を行う復
調部・3、および電気信号→光への変換及び電気信号の
変論1を行う変陣部・4に接続されている 。
It is connected to a demodulation section 3 which performs conversion from light to electrical signal and demodulation of the electrical signal, and a conversion section 4 which performs conversion from electrical signal to light and transformation 1 of the electrical signal.

変調部4及び復調部6は送受信部・5に接続されており
、受信したデータが復調部3から送受信部・5へ送信す
るデータが送受信部5から変調部・4へ送られる。
The modulating section 4 and the demodulating section 6 are connected to the transmitting/receiving section 5, and the received data is sent from the demodulating section 3 to the transmitting/receiving section 5, and the data is sent from the transmitting/receiving section 5 to the modulating section 4.

0 3 。0 3.

送受信部・5はバッファストレージ乙に接続されておシ
、ここでは受信したデータが自装置あ・てのデータであ
ればデータ受信用バッファストレージ6.3に送シ受信
したデータが自装置送信したデータであれば該データの
アドレス部、コントロール部および応答設定用フィール
ド部の4みを応答用バッファストレージ6.1に送る。
The transmitting/receiving unit 5 is connected to the buffer storage B, and if the received data is destined for the own device, it is sent to the data receiving buffer storage 6.3.The received data is sent to the own device. If it is data, only the address part, control part, and response setting field part of the data are sent to the response buffer storage 6.1.

 。.

又、ループへ送信するだめのデータはデータ送信用バッ
ファストレージ62から送受信部5へ送られる。   
              (。
Further, data that is not to be sent to the loop is sent from the data sending buffer storage 62 to the sending/receiving section 5.
(.

バッファストレージ6 ハUE、答用バッファストレー
ジ6.1、データ送信用バッファストレージ6、2 、
データ受信用バッファストレージ6.3より構成されて
おり、送受信部5及びループ伝送制御部7に接続されて
いる。
Buffer storage 6 UE, response buffer storage 6.1, data transmission buffer storage 6, 2,
It consists of a data reception buffer storage 6.3, and is connected to the transmission/reception section 5 and the loop transmission control section 7.

第2図は本発明の一実施例である。ループ伝送路を転送
されるデータのフォーマットである。
FIG. 2 shows an embodiment of the present invention. This is the format of data transferred over a loop transmission path.

ループ伝送フレーム11はその両端をフラグ12によっ
て囲まれ、下位ハイドよシ順に、送信元通信装置アドレ
スA s sあて光通信装置アドレス14コントロール
部17デ一部15応答設定用フィールド16より構成さ
れる。
The loop transmission frame 11 is surrounded by flags 12 at both ends, and is composed of a source communication device address A ss destination optical communication device address 14 a control section 17 a part 15 and a response setting field 16 in descending order. .

ループ伝送制御部・7で作成された送信データ・は、デ
ータ送信用バッファストレージ6.2を介して送受信部
5へ送られ、変調部4にょシ変KN c。
The transmission data created by the loop transmission control section 7 is sent to the transmission/reception section 5 via the data transmission buffer storage 6.2, and is then transferred to the modulation section 4.

およびIに気→光変換されて光フアイバ2上に送出され
る。
The light is converted into light and I and sent out onto the optical fiber 2.

データは光ファイバ2より復調部6に送られ。The data is sent to the demodulator 6 via the optical fiber 2.

光→電気変換され、復調されて送受信部5に送。The light is converted into electricity, demodulated, and sent to the transmitting/receiving section 5.

られる。送受信部5では受信したデータが自装、。It will be done. The transmitting/receiving section 5 transmits the received data to itself.

置あてのデータか、自装置が送出したデータかを判断し
、自装置あてのデータである時は該データをデータ受信
用バッファストレージ63に転送すると同時に応答フィ
ールドに受信確認パターンをセットし、変調部4を介し
てループ上、5に送信する。
It determines whether the data is destined for the device or the data sent by the device itself, and if it is the data addressed to the device itself, it transfers the data to the data reception buffer storage 63 and at the same time sets a reception confirmation pattern in the response field and modulates it. It is transmitted on a loop via part 4 to 5.

また自装置が送出したデータであるときは、該データの
アドレス部、コントロール部オよび応答設定用フィール
ド部のみを応答用バッファストレージ61に取り込み、
該データはループ上に転送しない。
If the data is sent by the own device, only the address part, control part, and response setting field part of the data are taken into the response buffer storage 61,
The data is not transferred onto the loop.

ループ伝送制御部7では受信した応答ケチニックして相
手通信装置が正常に受信したか否かを判断する。
The loop transmission control unit 7 checks the received response and determines whether the communication device of the other party has received it normally.

以上述べた如き構成であるから本発明にあつ5ては次の
如き効果を得ることができる。
With the configuration as described above, the following effects can be obtained in the present invention.

(a)  データに応答フィールドを重畳させ、ノ・−
ドウエアにて応答を返すことにより応答?l′i1認時
間を短時間、スループットの向上を図る。。
(a) Superimpose the response field on the data, and
Response by returning a response in hardware? To shorten l'i1 recognition time and improve throughput. .

(b)応答受信用バッファとデータ受信用バッフ1.)
アを別管理し、自装置が送信したデータの必要な部分の
み−を応答受信用バッファに取り込むことによりハード
ウェアメモリの容量を削。
(b) Response reception buffer and data reception buffer 1. )
Reduce hardware memory capacity by separately managing the data sent by the device itself and capturing only the necessary portions of the data sent by the device into the response reception buffer.

減することができる。can be reduced.

4、図面の簡単な説明            1゜第
1図は本発明の一実施例を示す通信装置のブロック図。
4. Brief Description of the Drawings 1. FIG. 1 is a block diagram of a communication device showing an embodiment of the present invention.

第2図は同じくループ伝送フレームを示す図である。FIG. 2 is a diagram similarly showing a loop transmission frame.

1・・・・・・通信装置 2・・・・・・光ファイバ 、7゜ 6・・・・・・復調部 4・・・・・・変調部 5・・・・・・送受信部 6・・・・・・ハソファストレージ 6.1・・・・・・応答用バッファストレージ62・・
・・・・データ送信用バッファストレージ6.6・・・
・・データ受信用バッファストレージ 。
1...Communication device 2...Optical fiber, 7゜6...Demodulator 4...Modulator 5...Transmitter/receiver 6. ...Hasofa storage 6.1...Response buffer storage 62...
...Buffer storage for data transmission 6.6...
...Buffer storage for data reception.

7、・・・・・・ループ伝送制御部 11・・・・・・ルーフ伝送フレーム 12・・・・・フラグ               
13.13・・・・・・送信元通信装置アドレス14・
・・・・・あて光通信装置アドレス15+・・・・・デ
ータ部 16・・・・・・応答設定用フィールド5 代理人弁理士 薄 1)利 幸   □゛゛2゜ 、 8 。
7,...Loop transmission control unit 11...Roof transmission frame 12...Flag
13.13... Source communication device address 14.
... Address of optical communication device 15 + ... Data section 16 ... Response setting field 5 Representative Patent Attorney Susuki 1) Toshiyuki □゛゛2゜, 8.

第1図 / f 2 口 //Figure 1 / f 2 mouth ///

Claims (1)

【特許請求の範囲】 直列に接続された複数個の通信装置が、閉ループを構成
しているループ状伝送システムにお5けるループ伝送制
御方式において、ループ上を。 転送されるデータには少くとも宛て光通信装置。 アドレス部、送信元通信装備アドレス部、コントロール
部、および応答設定用フィールド部を有し、各通信装置
はデータを送信する4陰、応、1)答フィールド部を初
期設定してデータの送信を行う機能と、自装置苑1での
データを受信した時には、該データをデータ愛情用バッ
ファに取り込むと同時に、送信元通信装備によりあらか
じめ初期設定されている該データの応答設定用孔。 イールド部を受信応答パターンにかきかえ、次下流通信
装置tに送信する機能と、自装置が送信したデータを受
信した時には該データのアドレス部、コントロール部お
よび応答設定用フィールド部のみを受信応答として、デ
ータ受信用バッファとは別に設けた応答受信用バッファ
に取。 り込む機能とからなることにより自装置Wが送出゛した
データを受信した通信装置は該データのり・ち応答確認
に心安な部分のみを応答情報として・眠り込むことを特
徴としたループ伝送i1i制御方式5゜
[Claims] A loop transmission control method in a loop transmission system in which a plurality of serially connected communication devices constitute a closed loop. The data to be transferred must be at least addressed to an optical communication device. Each communication device has an address section, a source communication equipment address section, a control section, and a field section for setting a response. When data is received by the own device 1, the data is taken into the data buffer, and at the same time, the response setting hole for the data is initialized in advance by the sender's communication equipment. A function that replaces the yield part with a reception response pattern and sends it to the next downstream communication device t, and when receiving data transmitted by the own device, only the address part, control part, and response setting field part of the data are used as a reception response. , to a response reception buffer that is separate from the data reception buffer. The loop transmission i1i control method is characterized in that the communication device that receives the data transmitted by its own device W uses only a safe part of the data as response information to confirm the response. 5゜
JP56185384A 1981-11-20 1981-11-20 Loop transmission controlling system Pending JPS5887943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56185384A JPS5887943A (en) 1981-11-20 1981-11-20 Loop transmission controlling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56185384A JPS5887943A (en) 1981-11-20 1981-11-20 Loop transmission controlling system

Publications (1)

Publication Number Publication Date
JPS5887943A true JPS5887943A (en) 1983-05-25

Family

ID=16169860

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56185384A Pending JPS5887943A (en) 1981-11-20 1981-11-20 Loop transmission controlling system

Country Status (1)

Country Link
JP (1) JPS5887943A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59211350A (en) * 1983-05-17 1984-11-30 Nec Corp Packet switching device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5072504A (en) * 1973-10-30 1975-06-16
JPS5482102A (en) * 1977-12-14 1979-06-30 Fujitsu Ltd Data communication system
JPS558068A (en) * 1978-07-04 1980-01-21 Seiko Epson Corp Semiconductor integrated circuit
JPS5616981A (en) * 1979-07-16 1981-02-18 Nec Corp Data retrieval unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5072504A (en) * 1973-10-30 1975-06-16
JPS5482102A (en) * 1977-12-14 1979-06-30 Fujitsu Ltd Data communication system
JPS558068A (en) * 1978-07-04 1980-01-21 Seiko Epson Corp Semiconductor integrated circuit
JPS5616981A (en) * 1979-07-16 1981-02-18 Nec Corp Data retrieval unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59211350A (en) * 1983-05-17 1984-11-30 Nec Corp Packet switching device

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