JPH02184145A - Data transmission system - Google Patents

Data transmission system

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Publication number
JPH02184145A
JPH02184145A JP1004413A JP441389A JPH02184145A JP H02184145 A JPH02184145 A JP H02184145A JP 1004413 A JP1004413 A JP 1004413A JP 441389 A JP441389 A JP 441389A JP H02184145 A JPH02184145 A JP H02184145A
Authority
JP
Japan
Prior art keywords
time difference
transmission
data
communication lines
buffer
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
JP1004413A
Other languages
Japanese (ja)
Inventor
Keiichi Toyoshima
豊嶋 敬一
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP1004413A priority Critical patent/JPH02184145A/en
Publication of JPH02184145A publication Critical patent/JPH02184145A/en
Pending legal-status Critical Current

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  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

PURPOSE:To attain high speed and accurate data transmission by interposing a time difference absorbing buffer to absorb a transmission time difference between communication channels in plural communication data transmission lines. CONSTITUTION:When a data sent from one terminal equipment 1 between terminal equipments 1, 2 faced with each other via a line exchange network 3 is distributed to plural communication channels 4a, 4b, 5a, 5b at lower speed than that of the terminal equipment 3, a time difference absorption buffer 72 to absorb the transmission time difference between the communication channels is interposed in the plural communication channels 4a, 4b, 5a, 5b. Thus, even if a transmission time difference exists among the plural communication channels, the transmission time difference of the data sent through the communication channel is absorbed by the time difference absorption buffer 72 and the data is used for the synthesis without time difference. Thus, the original data is correctly reproduced and high speed and accurate data transmission is implemented.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) 本発明は、例えばl5DN端末のような高速線交換網の
通信回線を介して伝送するためのブタ伝送方式に関する
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a pig transmission system for transmitting via a communication line of a high-speed line switched network, such as an I5DN terminal.

(従来の技術) 近年、l5DN(サービス統合ディジタル網)の商用化
に備えl5DN端末が種々開発されている。I SDN
端末は、例えば基本インタフェースの場合、2つのBチ
ャネル(64kbps)と一つのDチャネル(16kb
ps)を選択的に使用してデータ伝送を行なえるもので
、通常はBチャネルを1チヤネル使用して回線交換網に
よる64kbpsのデータ伝送を行なうが、Bチャネル
を2チャネル束ねて使用することにより 128k b
psの高速伝送を行なうことも可能である。
(Prior Art) In recent years, various types of 15DN terminals have been developed in preparation for the commercialization of 15DN (service integrated digital network). ISDN
For example, in the case of a basic interface, a terminal has two B channels (64 kbps) and one D channel (16 kb
ps) can be used selectively for data transmission. Normally, one B channel is used to transmit data at 64 kbps over a circuit switched network, but by using two B channels together, 128kb
It is also possible to perform high-speed transmission of PS.

ところで、伝送速度が64kbpsの回線交換網を使用
してこの128k bpsの高速伝送を行なうためには
、通信回線を2回線捕捉して128kbpsの端末送信
データをこれらの通信回線に分配して並列に伝送させ、
受信側でこれらの通信回線を経て送られたデータを合成
して128kbpsの原データを再生する必要がある。
By the way, in order to perform this high-speed transmission of 128 kbps using a line-switched network with a transmission speed of 64 kbps, it is necessary to capture two communication lines and distribute the 128 kbps terminal transmission data to these communication lines and transmit them in parallel. transmit,
On the receiving side, it is necessary to synthesize the data sent via these communication lines and reproduce the original data at 128 kbps.

しかし、回線網の通信回線はその経路により伝送時間差
を生じることがあり、このため2つの通信回線に分配さ
れて伝送された端末送信データは受信側で合成したとき
に正しく再生できなくなる場合があった。例えば、送信
側の端末装置が2つのBチャネルを使用して第5図に示
す如<  128kbpsの伝送速度で送信データSD
を送出し、この送信データSDを例えば宅内に設けられ
た情報分配装置によりSDI、SD2のように伝送速度
が84kbpsの2つの通信回線に交互に分配して回線
交換網へ送出したとする。そうすると、上記2つの通信
回線の回線交換網内の経路によっては、その伝送遅延量
の相違により、上記各送信データSDI、SD2が受信
側に到達したときにデータ間に例えばRDI、RD2の
ような時間差TDが生じる。このため、これらの受信デ
ータRDI、RD2を情報合成装置で合成して128k
 bpsのデータを再生すると、その再生データはRD
に示す如く原データSDとは全く異なるものとなって原
データは再現されず、この結果圧しいデータ伝送を行な
うことができなかった。
However, communication lines in a network may have transmission time differences depending on the route, and as a result, terminal transmission data that is distributed and transmitted over two communication lines may not be reproduced correctly when combined on the receiving side. Ta. For example, a terminal device on the transmitting side uses two B channels to transmit data SD at a transmission rate of <128 kbps as shown in FIG.
Suppose that this transmission data SD is alternately distributed to two communication lines with a transmission speed of 84 kbps, such as SDI and SD2, by an information distribution device installed in a house, and then sent to a circuit switching network. Then, depending on the route within the circuit-switched network of the two communication lines, due to the difference in the amount of transmission delay, when the respective transmission data SDI and SD2 reach the receiving side, there may be a delay between the data, such as RDI and RD2. A time difference TD occurs. Therefore, these received data RDI and RD2 are synthesized by an information synthesizer to create 128k data.
When you play bps data, the playback data is RD
As shown in FIG. 2, the data is completely different from the original data SD, and the original data cannot be reproduced. As a result, it is not possible to perform powerful data transmission.

(発明が解決しようとする課題) 以上のように従来の方式は、高速データをその伝送速度
よりも低速の複数の通信回線に分配して並行して伝送し
た場合に、これらの通信回線間の伝送時間差により、受
信側で原データを正しく再現することができず、この結
果正確なデータ伝送を行なうことができないという問題
点を有するもので、本発明はこの点に着目し、複数の通
信回線間に伝送時間差があっても原データを正しく再生
できるようにし、これにより高速でかつ正確なデータ伝
送を行ない得るデータ伝送方式を提供することを目的と
する。
(Problems to be Solved by the Invention) As described above, in the conventional system, when high-speed data is distributed to multiple communication lines whose transmission speed is lower than the original transmission speed and transmitted in parallel, Due to the transmission time difference, the original data cannot be correctly reproduced on the receiving side, and as a result, accurate data transmission cannot be performed. It is an object of the present invention to provide a data transmission system that can correctly reproduce original data even if there is a transmission time difference between them, and thereby can perform high-speed and accurate data transmission.

また本発明の別の目的は、複数の通信回線間の伝送時間
差が1通信毎に変化する場合でも、通信毎に伝送時間差
を最適に吸収できるようにし、これにより常に正確なデ
ータ伝送を行ない得るデータ伝送方式を提供しようとす
るものである。
Another object of the present invention is to make it possible to optimally absorb the transmission time difference for each communication even when the transmission time difference between multiple communication lines changes for each communication, thereby making it possible to always perform accurate data transmission. It attempts to provide a data transmission method.

[発明の構成] (課題を解決するための手段) 本発明は、回線交換網を介して相対向する端末装置間で
、一方の端末装置が送出したデータをこれらの端末装置
の伝送速度よりも低速の複数の通信回線に分配して並列
に伝送するデータ伝送方式において、上記複数の通信回
線のデータ伝送路中に、これらの通信回線間の伝送時間
差を吸収するための時間差吸収バッファを介挿するよう
にしたものである。
[Structure of the Invention] (Means for Solving the Problems) The present invention provides for transmitting data between opposing terminal devices via a line-switched network at a rate higher than the transmission speed of the terminal devices. In a data transmission method that distributes data to multiple low-speed communication lines and transmits them in parallel, a time difference absorption buffer is inserted in the data transmission path of the multiple communication lines to absorb the transmission time difference between these communication lines. It was designed to do so.

また別の本発明は、上記複数の通信回線のデータ伝送路
中に上記時間差吸収バッファを介挿するとともに、上記
複数の通信回線間の伝送時間差を測定する伝送時間差測
定手段と、上記時間差吸収バッファの時間差吸収量を制
御するバッファ制御手段とを備え、上記複数の通信回線
が接続された状態で、データ伝送に先立ち上記伝送時間
差測定手段により各通信回線間の伝送時間差を測定し、
この74N定結果に基づいて上記バッファ制御手段によ
り上記時間差吸収バッファの時間差吸収量を最適値に設
定するようにしたものである。
Another aspect of the present invention provides transmission time difference measuring means for inserting the time difference absorbing buffer into a data transmission path of the plurality of communication lines, and measuring a transmission time difference between the plurality of communication lines; buffer control means for controlling the amount of time difference absorption of the communication lines, and with the plurality of communication lines connected, the transmission time difference measuring means measures the transmission time difference between each communication line prior to data transmission;
Based on this 74N determination result, the buffer control means sets the time difference absorption amount of the time difference absorption buffer to an optimum value.

(作用) この結果、本発明によれば、複数の通信回線間に伝送時
間差があっても、これらの通信回線により伝送されるデ
ータは時間差吸収バッファにより伝送時間差が吸収され
て時間差のない状態でデータ合成に供されることになる
。このため、原データは正しく再生され、これにより高
速でかつ正確なデータ伝送を行なうことができる。
(Function) As a result, according to the present invention, even if there is a transmission time difference between a plurality of communication lines, the data transmitted through these communication lines has the transmission time difference absorbed by the time difference absorption buffer, so that there is no time difference. This will be used for data synthesis. Therefore, the original data can be correctly reproduced, allowing high-speed and accurate data transmission.

また別の本発明によれば、1通信毎にデータ伝送に先立
ち通信回線間の伝送時間差が測定され、時間差吸収バッ
ファにその都度最適な時間差吸収量が設定されることに
なるので、複数の通信回線間の伝送時間差がなとえ1通
信毎に変化する場合でも、通信毎に伝送時間差を最適に
吸収することが可能となり、これにより常に正確なデー
タ伝送を行なうことができる。
According to another aspect of the present invention, the transmission time difference between communication lines is measured prior to data transmission for each communication, and the optimal time difference absorption amount is set in the time difference absorption buffer each time. Even if the transmission time difference between lines changes for each communication, it is possible to optimally absorb the transmission time difference for each communication, thereby making it possible to always perform accurate data transmission.

(実施例) 第1図は本発明の一実施例におけるデータ伝送方式を適
用した回線交換伝送システムの概略構成図である。
(Embodiment) FIG. 1 is a schematic configuration diagram of a circuit switching transmission system to which a data transmission method according to an embodiment of the present invention is applied.

このシステムは、各々 12gkbpsの伝送速度でデ
ータの送受信が可能な送信端末装置1と受信端末装置2
との間を、回線交換網3およびこの回線交換網3に収容
される64kbpsの2本の通信回線4a、4bおよび
5a、5bを介して接続したものであり、送信端末装置
1と宅内回線終端装置(NT)8a、8bとの間には情
報分配装置6が、また受信端末装置2と宅内回線終端装
置(NT)9a、9bとの間には情報合成装置70がそ
れぞれ設けである。
This system consists of a transmitting terminal device 1 and a receiving terminal device 2, each capable of transmitting and receiving data at a transmission rate of 12 gkbps.
are connected via a circuit-switched network 3 and two 64 kbps communication lines 4a, 4b and 5a, 5b accommodated in this circuit-switched network 3. An information distribution device 6 is provided between the devices (NT) 8a and 8b, and an information synthesis device 70 is provided between the receiving terminal device 2 and the home line termination devices (NT) 9a and 9b.

このうち先ず情報分配装置6は、送信端末装置1から出
力された128kbpsの送信データSDを通信回線4
a、4bに応じた64k bpsのデータSDa、SD
bに変換するべくm−ビット毎に2つの系列に交互に分
配するものである。一方情報合成装置70は、2つの通
信回線5a、5bを介してそれぞれ送られた84kbp
sの受信データRDa、RDbを到来順に合成して12
8kbpsの受信データRDを再生する情報合成装置本
体71を有し、さらにバッファ72と、時間差Δき1定
回路73と、バッファ制御回路74とをそれぞれ備えて
いる。バッファ72は、2本の通信回線5 a r5b
を経て到来した受信データRDa、RDb間に生じた伝
送遅延時間差TOを吸収するものである。時間差測定回
路73は、データ伝送に先立ち送信端末装置1から送ら
れる時間差n1定用データの受信タイミングから、回線
交換網における2つの通信回線間の伝送遅延時間差を測
定するもので、このn1定結果をバッファ制御回路74
に供給する。
First of all, the information distribution device 6 transmits the 128 kbps transmission data SD output from the transmission terminal device 1 to the communication line 4.
64k bps data SDa, SD according to a, 4b
Each m-bit is alternately distributed into two sequences for conversion to b. On the other hand, the information synthesis device 70 receives the 84kbp data sent via the two communication lines 5a and 5b.
The received data RDa and RDb of s are combined in the order of arrival and 12
It has an information synthesis device main body 71 that reproduces received data RD of 8 kbps, and further includes a buffer 72, a time difference Δ 1 constant circuit 73, and a buffer control circuit 74, respectively. The buffer 72 has two communication lines 5a and 5b.
This is to absorb the transmission delay time difference TO that occurs between the received data RDa and RDb that arrive via the . The time difference measuring circuit 73 measures the transmission delay time difference between two communication lines in the circuit switching network based on the reception timing of time difference n1 standard data sent from the transmitting terminal device 1 prior to data transmission, and this n1 standard result is determined by the time difference measuring circuit 73. The buffer control circuit 74
supply to.

バッファ!制御回路74は、上記伝送遅延時間差の、1
llll定結果に基づいてこの時間差を零にするべくバ
ッファ72の遅延量を設定する。
buffer! The control circuit 74 controls the transmission delay time difference by 1.
The delay amount of the buffer 72 is set based on the Illll determination result in order to make this time difference zero.

このような構成であるから、待機状態において送信端末
装置1が受信端末装置2に対しデータを送信するべく発
呼し、この結果回線交換網3により送信端末装置1と受
信端末装置2との間が2本の通信回線を介して接続され
ると、先ずこの状態で送信端末装置1から伝送遅延時間
差rllllll−タが送出される。この伝送遅延時間
差測定用データとしては、例えばオール“Omまたはオ
ール“1”の情報が用いられる。これに対し受信側に設
けられた情報合成装置70では、2本の通信回線を介し
て送信端末装置1から送られる上記測定用データの受信
タイミングから時間差An)定回路73により両通信回
線間の伝送遅延時間差TDを7111定する。そして、
バッファ制御回路74によりこの時間差の測定結果に従
ってバッファ72の遅延量を制御し、両通信回線間の伝
送遅延時間差が零になるように設定する。
With such a configuration, the transmitting terminal device 1 makes a call to the receiving terminal device 2 to transmit data in the standby state, and as a result, the circuit switching network 3 connects the transmitting terminal device 1 and the receiving terminal device 2. are connected via two communication lines, first, in this state, the transmission delay time difference rllllll-ta is sent from the transmitting terminal device 1. As this transmission delay time difference measurement data, for example, all "Om" or all "1" information is used.On the other hand, in the information synthesizing device 70 provided on the receiving side, the data is transmitted to the transmitting terminal via two communication lines. From the reception timing of the measurement data sent from the device 1, the transmission delay time difference TD between both communication lines is determined 7111 by the time difference An) determining circuit 73.
The buffer control circuit 74 controls the delay amount of the buffer 72 according to the measurement result of this time difference, and sets the transmission delay time difference between both communication lines to be zero.

そうして、バッファ72の遅延量の設定期間が終了する
と、送信端末装置1はデータSDの送信を開始する。そ
うすると、この送信データSDは情報分配装置6により
例えば第2図に示す如(64k bpsの2系統のデー
タSDa、SDbに変換され、対応する2本の通信回線
4a、4bへそれぞれ送出される。そして、これらの送
信データSDa、SDbは回線交換網3および受信側の
2本の通信回線5a、5bを介して、受信側に設けられ
た情報合成装置70に導かれる。この情報合成装置70
では、先ずバッファ72で伝送中に生じた各通信回線間
の伝送遅延時間差が吸収される。例えばいま各通信回線
5a、5bを経て到来した受信データRDa、RDbが
それぞれ第5図に示すような伝送遅延を受けたとする。
Then, when the period for setting the delay amount of the buffer 72 ends, the transmitting terminal device 1 starts transmitting the data SD. Then, this transmission data SD is converted by the information distribution device 6 into two systems of data SDa and SDb of 64 kbps as shown in FIG. 2, for example, and sent to two corresponding communication lines 4a and 4b, respectively. These transmission data SDa and SDb are guided to an information synthesis device 70 provided on the reception side via the circuit switching network 3 and two communication lines 5a and 5b on the reception side.This information synthesis device 70
First, the buffer 72 absorbs the transmission delay time difference between each communication line that occurs during transmission. For example, assume that the received data RDa and RDb that have arrived via the communication lines 5a and 5b have been subjected to transmission delays as shown in FIG. 5, respectively.

そうすると、これらの受信データRDa、RDb間に生
じた伝送遅延時間差Tpは、バッファ72により受信デ
ータRDaを上記伝送遅延時間差TD分だけさらに遅延
させることにより第2図RDa’ 、RDb’ に示す
ように吸収される。そうして伝送遅延時間差TDが吸収
された各受信データRDa’ 、RDb’ !、t、情
報合成装置本体71で受信順に一定ビット分ずつ合成さ
れ、これにより第2図に示す如く受信データRDが再生
されて受信端末袋fif2で受信される。
Then, the transmission delay time difference Tp generated between these received data RDa and RDb is reduced by further delaying the received data RDa by the transmission delay time difference TD by the buffer 72, as shown in FIG. Absorbed. In this way, each received data RDa', RDb' with the transmission delay time difference TD absorbed! , t, the information synthesizer main body 71 synthesizes a certain number of bits in the order of reception, thereby reproducing the received data RD as shown in FIG. 2 and receiving it at the receiving terminal fif2.

このように本実施例であれば、回線交換網の捕捉した2
つの通信回線間にたとえ伝送遅延時間差があったとして
も、この伝送遅延時間差は受信側の情報合成装置70内
に設けたバッファ72により吸収される。従って、各通
信回線を経て伝送されたデータは、相互に伝送遅延時間
差のない送信時と全く同じタイミング条件で合成される
ことになり、この結果第5図に示したような情報波は等
を生じない正しいデータを再生することができる。
In this way, in this embodiment, the 2
Even if there is a difference in transmission delay time between the two communication lines, this difference in transmission delay time is absorbed by the buffer 72 provided in the information synthesis device 70 on the receiving side. Therefore, the data transmitted via each communication line will be synthesized under exactly the same timing conditions as during transmission, with no difference in transmission delay time, and as a result, the information waves shown in Figure 5 will be It is possible to reproduce correct data that does not occur.

また、通信回線が捕捉される毎に、データ伝送に先立ち
通信回線間の伝送遅延時間差を測定してその測定結果に
従ってバッファ72の遅延時間量を設定するようにした
ので、通信毎にその時の通信回線間の伝送遅延時間差に
応じた最適な時間差吸収を行なうことができ、これによ
り常に正確なデータ伝送を行なうことができる。また本
実施例であれば、時間差吸収用バッファ72、時間差測
定回路73およびバッファ制御回路74を情報合成装置
70内に一括して設けたので、送信側の情報分配装置6
等他の装置1こは何も設ける必要がなく、これにより従
来のシステムの一部を変更するだけで比較的簡単に実現
できる利点がある。
Furthermore, each time a communication line is captured, the transmission delay time difference between the communication lines is measured prior to data transmission, and the amount of delay time of the buffer 72 is set according to the measurement result, so that each communication It is possible to perform optimal time difference absorption according to the transmission delay time difference between lines, and thereby it is possible to always perform accurate data transmission. Further, in this embodiment, since the time difference absorption buffer 72, the time difference measurement circuit 73, and the buffer control circuit 74 are provided in the information synthesis device 70, the information distribution device 6 on the transmitting side
There is no need to provide any other devices such as this, and this has the advantage that it can be implemented relatively easily by only changing a part of the conventional system.

尚、本発明は」二記実施例に限定されるものではない。It should be noted that the present invention is not limited to the second embodiment.

例えば、第3図に示す如く情報分配装置60に時間差吸
収用のバッファ62およびこのバッファ62の制御回路
63を設けるとともに、情報合成装置70′に時間差n
1定回路7zを設け、データ伝送に先立ち送信端末装置
1がら時間差allllll収用情報して情報合成装置
W70’の時間差測定回路7Fで各通信回線間の伝送遅
延時間差をn1定し、この測定結果を通信回線を介して
送信側へ伝送してバッファ制御回路63によりバッファ
62の遅延量を制御するようにしてもよい。また、第4
図に示す如く送信端末装置1に付属する宅内回線終端装
置80内に信号送出口路82を設けるとともに、受信端
末装置2に付属する宅内回線終端装置90内にバッファ
92および時間差測定回路93とを設け、上記信号送出
回路82から伝送遅延時間差測定用の情報を送出して時
間差alll回定93で各通信回線間の伝送遅延時間差
をApl定し、この測定結果に応じてバッファ92に遅
延時間量を設定するようにしてもよい。さらに前記各実
施例では、通信毎にその通信回線の伝送遅延時間差をa
ll定してバッファの遅延時間量を設定するようにした
が、捕捉される通信回線が固定されている場合や伝送遅
延時間差が変化しない場合には、遅延量が固定されたバ
ッファを設けてもよい。この場合には、伝送遅延時間差
の測定回路およびバッファ制御回路を不要にすることが
できる。その他、バッファの設置位置や時間差測定手段
の構成、時間差測定用情報の種類、端末装置および通信
回線の伝送速度の値、捕捉する通信回線の本数等につい
ても、本発明の要旨を逸脱しない範囲で種々変形して実
施できる。
For example, as shown in FIG. 3, the information distribution device 60 is provided with a buffer 62 for absorbing time differences and a control circuit 63 for this buffer 62, and the information synthesis device 70' is provided with a time difference n.
1 constant circuit 7z is provided, and prior to data transmission, the transmitting terminal device 1 acquires all time difference information, and the time difference measuring circuit 7F of the information synthesis device W70' determines the transmission delay time difference n1 between each communication line, and this measurement result is Alternatively, the delay amount of the buffer 62 may be controlled by the buffer control circuit 63 by transmitting it to the transmitting side via a communication line. Also, the fourth
As shown in the figure, a signal output path 82 is provided in the home line termination device 80 attached to the transmitting terminal device 1, and a buffer 92 and a time difference measuring circuit 93 are provided in the home line termination device 90 attached to the receiving terminal device 2. The signal sending circuit 82 transmits information for measuring the transmission delay time difference, and the time difference all circuit 93 determines the transmission delay time difference between each communication line. may be set. Furthermore, in each of the above embodiments, the transmission delay time difference of the communication line is set to a for each communication.
However, if the communication line to be captured is fixed or the transmission delay time difference does not change, it is also possible to set a buffer with a fixed delay amount. good. In this case, it is possible to eliminate the need for a transmission delay time difference measurement circuit and a buffer control circuit. In addition, the installation position of the buffer, the configuration of the time difference measuring means, the type of information for time difference measurement, the value of the transmission speed of the terminal device and the communication line, the number of communication lines to be captured, etc. may be changed without departing from the gist of the present invention. It can be implemented with various modifications.

〔発明の効果〕〔Effect of the invention〕

以上詳述したように本発明によれば、複数の通信回線の
データ伝送路中に、これらの通信回線間の伝送時間差を
吸収するための時間差吸収バッファを介挿するようにし
たことによって、複数の通信回線間に伝送時間差があっ
ても原データを正しく再生することができ、これにより
高速でかつ正確なデータ伝送を行ない得るデータ伝送方
式を提供することができる。
As described in detail above, according to the present invention, a time difference absorption buffer for absorbing the transmission time difference between the plurality of communication lines is inserted in the data transmission path of the plurality of communication lines. Even if there is a transmission time difference between communication lines, the original data can be correctly reproduced, thereby providing a data transmission system that can perform high-speed and accurate data transmission.

また別の本発明は、複数の通信回線のデータ伝送路中に
上記時間差吸収バッファを介挿するとともに、上記複数
の通信回線間の伝送時間差を71−1定する伝送時間差
測定手段と、上記時間差吸収バッファの時間差吸収量を
制御するバッファ制御手段とを備え、上記複数の通信回
線が接続された状態で、データ伝送に先立ち上記伝送時
間差lpj定手投手段り各通信回線間の伝送時間差を8
11定し、この7I−1定結果に基づいて上記バッファ
制御手段により上記時間差吸収バッファの時間差吸収量
を最適値に設定するようにしたことによって、複数の通
信回線間の伝送時間差が1通信毎に変化する場合でも、
通信毎に伝送時間差を最適に吸収することができ、これ
により常に正確なデータ伝送を行ない得るデータ伝送方
式を提供することができる。
Another aspect of the present invention provides transmission time difference measuring means for interposing the time difference absorbing buffer in a data transmission path of a plurality of communication lines and determining a transmission time difference between the plurality of communication lines by 71-1; and buffer control means for controlling the amount of time difference absorbed by the absorption buffer, and with the plurality of communication lines connected, the transmission time difference lpj fixed pitch means reduces the transmission time difference between each communication line by 8 before data transmission.
By setting the time difference absorption amount of the time difference absorption buffer to the optimum value by the buffer control means based on the 7I-1 determination result, the transmission time difference between a plurality of communication lines can be reduced for each communication. Even if it changes to
It is possible to optimally absorb transmission time differences for each communication, thereby providing a data transmission system that can always perform accurate data transmission.

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

第1図は本発明の一実施例おけるデータ伝送方式を適用
した回線交換伝送システムの概略構成図、第2図は同シ
ステムの動作説明に使用するタイミング図、第3図およ
び第4図はそれぞれ本発明の他の異なる実施例における
データ伝送方式を適用した回線交換伝送システムの概略
構成図、第5図は従来のデータ伝送方式の問題点を説明
するために使用するタイミング図である。 1・・・送信端末装置、2・・・受信端末装置、3・・
・回線交換網、4a、4b、5a、5b−・・通信回線
、6.60・・・情報分配装置、61・・・情報分配装
置本体、62,72.92・・・伝送遅延時間差吸収用
のバッファ、63.74・・・バッファ制御回路、7,
70.70’ ・・・情報合成装置、71・・・情報合
成装置本体、73.93・・・時間差測定回路、8a、
8b、9a、9b、80゜90・・・宅内回線終端装置
、81a、81b。 91a、91b・・・宅内回線終端装置本体、82・・
・信号送出回路。 出願人代理人 弁理士 鈴江武彦
Fig. 1 is a schematic configuration diagram of a circuit switching transmission system to which a data transmission method according to an embodiment of the present invention is applied, Fig. 2 is a timing diagram used to explain the operation of the system, and Figs. 3 and 4 are respectively FIG. 5 is a schematic configuration diagram of a circuit switching transmission system to which a data transmission system according to another different embodiment of the present invention is applied, and is a timing diagram used to explain problems of the conventional data transmission system. 1... Transmitting terminal device, 2... Receiving terminal device, 3...
・Line switching network, 4a, 4b, 5a, 5b-- Communication line, 6.60... Information distribution device, 61... Information distribution device main body, 62, 72.92... For absorbing transmission delay time difference buffer, 63.74...buffer control circuit, 7,
70.70'... Information synthesis device, 71... Information synthesis device main body, 73.93... Time difference measurement circuit, 8a,
8b, 9a, 9b, 80°90... In-house line termination device, 81a, 81b. 91a, 91b...In-house line termination device main body, 82...
・Signal sending circuit. Applicant's agent Patent attorney Takehiko Suzue

Claims (2)

【特許請求の範囲】[Claims] (1)回線交換網を介して相対向する端末装置間で、一
方の端末装置が送出したデータをこれらの端末装置の伝
送速度よりも低速の複数の通信回線に分配して並列に伝
送するデータ伝送方式において、前記複数の通信回線の
データ伝送路中に、これらの通信回線間の伝送時間差を
吸収するための時間吸収バッファを介挿したことを特徴
とするデータ伝送方式。
(1) Data that is transmitted in parallel between terminal devices that face each other via a circuit-switched network, by distributing data sent by one terminal device to multiple communication lines whose transmission speed is lower than the transmission speed of these terminal devices. A data transmission method, characterized in that a time absorption buffer for absorbing a transmission time difference between the plurality of communication lines is inserted in the data transmission path of the plurality of communication lines.
(2)回線交換網を介して相対向する端末装置間で、一
方の端末装置が送出したデータをこれらの端末装置の伝
送速度よりも低速の複数の通信回線に分配して並列に伝
送するデータ伝送方式において、前記複数の通信回線の
データ伝送路中に、これらの通信回線間の伝送時間差を
吸収するための時間吸収バッファを介挿し、かつ前記複
数の通信回線間の伝送時間差を測定する伝送時間差測定
手段と、前記時間差吸収バッファの時間差吸収量を制御
するバッファ制御手段とを備え、前記複数の通信回線が
接続された状態で、データ伝送に先立ち前記伝送時間差
測定手段により各通信回線間の伝送時間差を測定し、こ
の測定結果に基づいて前記バッファ制御手段により前記
時間差吸収バッファの時間差吸収量を最適値に設定する
ようにしたことを特徴とするデータ伝送方式。
(2) Data that is transmitted in parallel between terminal devices that face each other via a circuit-switched network, by distributing data sent by one terminal device to multiple communication lines whose transmission speed is lower than the transmission speed of these terminal devices. In the transmission method, a time absorption buffer for absorbing the transmission time difference between the plurality of communication lines is inserted in the data transmission path of the plurality of communication lines, and the transmission time difference between the plurality of communication lines is measured. and a buffer control means for controlling the amount of time difference absorbed by the time difference absorption buffer, and in a state where the plurality of communication lines are connected, the transmission time difference measurement means determines the time difference between each communication line before data transmission. A data transmission method, characterized in that a transmission time difference is measured, and based on the measurement result, the buffer control means sets the time difference absorption amount of the time difference absorption buffer to an optimum value.
JP1004413A 1989-01-11 1989-01-11 Data transmission system Pending JPH02184145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1004413A JPH02184145A (en) 1989-01-11 1989-01-11 Data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1004413A JPH02184145A (en) 1989-01-11 1989-01-11 Data transmission system

Publications (1)

Publication Number Publication Date
JPH02184145A true JPH02184145A (en) 1990-07-18

Family

ID=11583621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1004413A Pending JPH02184145A (en) 1989-01-11 1989-01-11 Data transmission system

Country Status (1)

Country Link
JP (1) JPH02184145A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06303278A (en) * 1993-03-02 1994-10-28 Internatl Business Mach Corp <Ibm> Method and equipment for transmitting high-speed digital data flow via a plurality of independent digital communication channels

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5827448A (en) * 1981-08-10 1983-02-18 Nippon Telegr & Teleph Corp <Ntt> Broad band communication system
JPS61169044A (en) * 1985-01-23 1986-07-30 Oki Electric Ind Co Ltd Information transmission and reception system
JPS6376649A (en) * 1986-09-19 1988-04-06 Fujitsu Ltd Terminal adding device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5827448A (en) * 1981-08-10 1983-02-18 Nippon Telegr & Teleph Corp <Ntt> Broad band communication system
JPS61169044A (en) * 1985-01-23 1986-07-30 Oki Electric Ind Co Ltd Information transmission and reception system
JPS6376649A (en) * 1986-09-19 1988-04-06 Fujitsu Ltd Terminal adding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06303278A (en) * 1993-03-02 1994-10-28 Internatl Business Mach Corp <Ibm> Method and equipment for transmitting high-speed digital data flow via a plurality of independent digital communication channels

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