JPH03276934A - Error detection system for data communication - Google Patents
Error detection system for data communicationInfo
- Publication number
- JPH03276934A JPH03276934A JP7559290A JP7559290A JPH03276934A JP H03276934 A JPH03276934 A JP H03276934A JP 7559290 A JP7559290 A JP 7559290A JP 7559290 A JP7559290 A JP 7559290A JP H03276934 A JPH03276934 A JP H03276934A
- Authority
- JP
- Japan
- Prior art keywords
- data
- transmitting
- transmission
- received
- communication
- 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
Links
- 238000004891 communication Methods 0.000 title claims abstract description 54
- 238000001514 detection method Methods 0.000 title claims description 7
- 230000005540 biological transmission Effects 0.000 abstract description 27
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 208000033748 Device issues Diseases 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000013524 data verification Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
発明の背景
技術分野
この発明は、データ通信における誤り検出システムに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to error detection systems in data communications.
従来技術とその問題点
データ通信時において、障害の発生、その他の原因によ
り送信装置から受信装置に正しいデータが送信されない
ことがある。このため通信データの誤り検出を行なう必
要がある。Prior Art and its Problems During data communication, correct data may not be transmitted from a transmitting device to a receiving device due to occurrence of a failure or other causes. Therefore, it is necessary to detect errors in communication data.
従来、データ通信における誤り検出は種々の手法を用い
て受信装置側で行なわれており、誤りが検出されたとき
に受信装置から送信装置にデータの再送信要求が出され
る。Conventionally, error detection in data communication has been performed on the receiving device side using various techniques, and when an error is detected, the receiving device issues a data retransmission request to the transmitting device.
しかしながら、送信誤りが生じているにもかかわらず受
信装置側で誤りが検出されない場合には受信装置から再
送信要求が出力されない。このため送信装置側では再送
信要求を受信しないので誤りを認識することができずデ
ータの再送信が行なわれずに不都合が生じていた。また
送信装置側で送信データが受信装置に正しく受信された
かどうかを確認する必要がある場合がある。However, if no error is detected on the receiving device side even though a transmission error has occurred, a retransmission request is not output from the receiving device. For this reason, since the transmitting device does not receive the retransmission request, it is unable to recognize the error and data is not retransmitted, resulting in an inconvenience. Further, there are cases where it is necessary on the transmitting device side to check whether the transmitted data has been correctly received by the receiving device.
ところで、 Ｉ Ｓ Ｄ Ｎ （Ｉｎｔｅｇｒａｔｅ
ｄ ＳｅｒｖｉｃｅｓＤｉｇｉｔａｌ Ｎｅｔｖａｒｋ
）といわれる通信網が脚光をあびている。この通信網
は全二重通信が可能１回線数が多い等という従来にない
特徴をもっているので、広い分野での応用の展開が期待
されている。By the way, ISD N (Integrate)
d ServicesDigital Netwark
) communication networks are in the spotlight. This communication network has unprecedented features such as full-duplex communication and a large number of lines per line, so it is expected to be applied in a wide range of fields.
発明の概要
発明の目的
この発明は、全二重通信が可能な通信システムにおいて
、正しくデータが送信されたかどうかを送信側で確認す
ることができるようにすることを目的とする。SUMMARY OF THE INVENTION OBJECT OF THE INVENTION The object of the present invention is to enable a transmission side to confirm whether data has been transmitted correctly in a communication system capable of full-duplex communication.
発明の構成および効果
この発明によるデータ通信の誤り検出システムは、全二
重通信が可能な２台の送受信装置がら構成され、一方の
送受信装置は他方の送受信装置がらデータが送信された
ときに、受信データの少なくとも一部を他方の送受信装
置に返送するものであり、他方の送受信装置は、一方の
送受信装置に送信したデータと一方の送受信装置がら返
送されたデータとを照合する照合手段を備えていること
を特徴とする。Structure and Effects of the Invention The data communication error detection system according to the present invention is composed of two transmitting/receiving devices capable of full-duplex communication, and one transmitting/receiving device detects when data is transmitted from the other transmitting/receiving device. At least a part of the received data is returned to the other transmitting/receiving device, and the other transmitting/receiving device is provided with a collation means for comparing the data transmitted to the one transmitting/receiving device with the data sent back from the one transmitting/receiving device. It is characterized by
上記において、一方の送受信装置が受信側、他方の送受
信装置が送信側となる。この発明によると、受信側から
返送されたデータを送信側において先に送信したデータ
と照合しているので、データの送信側の装置で誤り検出
を行なうことができる。したがって、送信したデータが
正しく受信されたかどうかを送信側装置で確認できるの
で、受信側装置の状態に関係なく、常に送信側がイニシ
アチブをとって通信を行なうことが可能となる。In the above, one transmitting/receiving device is the receiving side, and the other transmitting/receiving device is the transmitting side. According to this invention, since the data returned from the receiving side is compared with previously transmitted data on the transmitting side, error detection can be performed at the data transmitting side device. Therefore, since the transmitting device can check whether the transmitted data has been correctly received, the transmitting device can always take the initiative in communicating regardless of the state of the receiving device.
実施例の説明 図面はこの発明の実施例を示すブロック図である。Description of examples The drawing is a block diagram showing an embodiment of the invention.
２台の通信装置ＩＯと２０が全二重通信網によって相互
に接続されており、これらの通信装置１０．２０は全二
重通信が可能な送信部１１．２１．受信部１２゜２２を
それぞれ備えている。この実施例では１通信装置１０が
送信側１通信装置２０が受信側に設定されている。Two communication devices IO and 20 are connected to each other by a full-duplex communication network, and these communication devices 10.20 have transmitting units 11.21.20 capable of full-duplex communication. Each of the receiving sections 12 and 22 is provided. In this embodiment, one communication device 10 is set as a transmitter, and one communication device 20 is set as a receiver.
通信装置１０の送信部１１から送信されたデータは通信
装置２０の受信部２２で受信される。通信装置２０は、
受信部２２で受信したデータの全部または一部をただち
に送信部２１から通信装置１０の受信部１２に送信する
機能をもっている。Data transmitted from the transmitter 11 of the communication device 10 is received by the receiver 22 of the communication device 20 . The communication device 20 is
It has a function of immediately transmitting all or part of the data received by the receiving unit 22 from the transmitting unit 21 to the receiving unit 12 of the communication device 10.
通信装置１０には、送信部１１から送信したデータをモ
ニタする送信モニタ３１と受信部１２によって受信した
データをモニタする受信モニタ３２とを含むモニタ装置
３０と、送信部１１から送信したデータと受信部１２に
よって受信したデータとを照合するデータ照合装置４０
とが接続されている。The communication device 10 includes a monitor device 30 that includes a transmission monitor 31 that monitors the data transmitted from the transmission section 11 and a reception monitor 32 that monitors the data received by the reception section 12, and a monitor device 30 that monitors the data transmitted from the transmission section 11 and the reception monitor 32 that monitors the data transmitted from the transmission section 11. a data matching device 40 that matches the data received by the unit 12;
are connected.
通信装置ｌＯの送信部１１から送信データが通信装置２
０の受信部２２に送信される。通信装置２ｏでは受信し
たデータの出力、加工、その他の処理が行なわれる。受
信部２２で受信したデータの全部または一部が送信部２
１に与えられ１通信装置２ｏの送信部２１からこのデー
タが通信装置１ｏの受信部１２に返送される。Transmission data is transmitted from the transmitter 11 of the communication device IO to the communication device 2.
It is transmitted to the receiving unit 22 of No. 0. The communication device 2o outputs, processes, and performs other processing on the received data. All or part of the data received by the receiving unit 22 is sent to the transmitting unit 2.
1, and this data is sent back from the transmitter 21 of the communication device 1o to the receiver 12 of the communication device 1o.
送信部１１から送信されたデータの全部または一部、お
よび通信装置２ｏの送信部２１がら返送されがつ受信部
１２で受信されたデータはデータ照合装置４０に与えら
れる。このデータ照合装置４ｏでこれらの送信データと
受信データとが公知のパターン・マツチングの手法その
他の方法により照合され。All or part of the data transmitted from the transmitter 11 and the data returned from the transmitter 21 of the communication device 2o and received by the receiver 12 are given to the data collation device 40. The data matching device 4o matches the transmitted data and received data using a known pattern matching method or other methods.
両データが一致しているかどうかが判定される。It is determined whether both data match.
この判定結果は通信装置１０に与えられるので１通信装
置１０はデータの送信が正しく行なわれたかどうか、受
信側の通信装置２０が送信データを正しく受信したかど
うかを認識することができる。両データに不一致があり
、送信エラーがあると判断されると１通信装置２０は、
送信データをその送信部１１から再び通信装置２０に送
信する。Since this determination result is given to the communication device 10, the communication device 10 can recognize whether the data transmission was performed correctly and whether the communication device 20 on the receiving side correctly received the transmitted data. When it is determined that there is a mismatch between the two data and that there is a transmission error, the first communication device 20
The transmission data is transmitted from the transmission unit 11 to the communication device 20 again.
このようにして、送信側の通信装置１０は、たとえ受信
側の通信装置２０における誤り検出処理機能が故障して
いたとしても、送信したデータが受信側の通信装置２０
に正しく受信されたかどうかを判定することができ、送
信エラーが生じていると判定したときには送信側で常に
適切な処置を行なうことができるようになる。もし必要
であれば、受信側の通信装置２０において、送信部２１
から返送されるデータに、正しく受信したかどうか、再
送信が必要かどうか（再送信要求）等を示すメツセージ
を含ませてもよい。これにより送信側の通信装置ｌＯは
受信側の通信装置２０におけるデータ受信の状態を把握
することができるようになる。In this way, even if the error detection processing function in the receiving side communication device 20 is out of order, the sending side communication device 10 can transmit the transmitted data to the receiving side communication device 20.
It is possible to determine whether or not the transmission has been received correctly, and when it is determined that a transmission error has occurred, the transmission side can always take appropriate measures. If necessary, the transmitting unit 21 in the communication device 20 on the receiving side
The data returned from the sender may include a message indicating whether or not it was received correctly, whether retransmission is necessary (retransmission request), etc. This allows the transmitting side communication device 1O to grasp the data reception status in the receiving side communication device 20.
データ照合装置４０による送信データと受信データとの
照合はすべての種類のデータに対して有効である。特に
、データが画像データの場合には。Verification of transmitted data and received data by the data verification device 40 is effective for all types of data. Especially when the data is image data.
モニタ装置３０によるチエツクが可能である。すなわち
、送信部１１から送信された画像データはモニタ装置３
０の送信データ・モニタ３１に与えられ、その画像デー
タによる映像がモニタ３１上に可視表示される。また１
通信装置２０から返送され、受信部１２で受信された画
像データは受信データ・モニタ３２に与えられ可視表示
される。操作係員が送信データ・モニタ３１と受信デー
タ・モニタ３２に表示された映像を視覚によって比較す
ることにより。Checking by the monitor device 30 is possible. That is, the image data transmitted from the transmitter 11 is transmitted to the monitor device 3.
0 is sent to the monitor 31, and an image based on the image data is visually displayed on the monitor 31. Also 1
The image data returned from the communication device 20 and received by the receiving section 12 is provided to the received data monitor 32 and visually displayed. By visually comparing the images displayed on the transmission data monitor 31 and the reception data monitor 32 by the operating personnel.
通信装置１０から送信されたデータが通信装置２ｏによ
って正しく受信されたかどうかを判定確認することがで
きる。両モニタ３１．３２上に表示された映像が一致し
ない場合には送信誤りと判断され１通信装置１０から再
び同じ画像データの通信装置２ｏに送信することができ
る。It is possible to determine and confirm whether the data transmitted from the communication device 10 has been correctly received by the communication device 2o. If the images displayed on both monitors 31 and 32 do not match, it is determined that there is a transmission error, and the same image data can be transmitted from one communication device 10 to the communication device 2o again.
送信される画像データがデータ圧縮処理されたものであ
る場合には、データの一部分にエラーが生じていても、
モニタ上に写しだされる映像は目茶苦茶となることが多
いので、モニタ装置３ｏによる画像データの照合はとく
に有効である。If the image data to be sent has been compressed, even if some part of the data contains an error,
Since images displayed on a monitor are often chaotic, collation of image data by the monitor device 3o is particularly effective.
また、受信データ・モニタ３２に表示された映像のみに
よっても画像データの送受信エラーの発見が可能である
。Furthermore, it is possible to discover transmission/reception errors in image data only by looking at the video displayed on the received data monitor 32.
全二重データ通信網が上述したｌ５ＤＮのようにその通
信網の使用時間に応じて課金されるようなものであって
も、受信側から送信側へのデータの返送はデータを受信
するごとにただちに行なわれ、このとき送信側から受信
側へのデータ送信が続行しているので１通信網の使用料
金がデータ返送処理のために増大することは殆どなく、
この点からもこの発明による送信エラー・チエツクは有
利である。Even if the full-duplex data communication network is one that charges according to the usage time of the communication network, such as the above-mentioned 15DN, data is sent back from the receiving side to the sending side each time data is received. This is done immediately, and at this time, data transmission from the sender to the receiver continues, so the usage fee for one communication network hardly increases due to data return processing.
From this point as well, the transmission error check according to the present invention is advantageous.
図面はこの発明の実施例を示すブロック図である。 １０、２０・・・通信装置。 ３０・・・モニタ装置。 ４０・・ ア 夕照合装置。 以 上 The drawing is a block diagram showing an embodiment of the invention. 10, 20... Communication device. 30...Monitor device. 40... a Evening verification device. Below Up
Claims (1)
されたときに、受信データの少なくとも一部を他方の送
受信装置に返送するものであり、他方の送受信装置は、
一方の送受信装置に送信したデータと一方の送受信装置
から返送されたデータとを照合する照合手段を備えてい
る、データ通信の誤り検出システム。[Claims] Consisting of two transmitting/receiving devices capable of full-duplex communication, when one transmitting/receiving device transmits data from the other transmitting/receiving device, at least a part of the received data is sent to and received by the other transmitting/receiving device. and the other transmitting/receiving device is
A data communication error detection system that includes a collation unit that collates data sent to one transmitter/receiver and data returned from the other transmitter/receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7559290A JPH03276934A (en) | 1990-03-27 | 1990-03-27 | Error detection system for data communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7559290A JPH03276934A (en) | 1990-03-27 | 1990-03-27 | Error detection system for data communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03276934A true JPH03276934A (en) | 1991-12-09 |
Family
ID=13580627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7559290A Pending JPH03276934A (en) | 1990-03-27 | 1990-03-27 | Error detection system for data communication |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03276934A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994019076A1 (en) * | 1993-02-17 | 1994-09-01 | Kabushiki Kaisha Ace Denken | Game house system utilizing storage medium |
| JPH08153053A (en) * | 1994-11-28 | 1996-06-11 | Nec Software Ltd | Method and device for data transfer |
| DE19547000A1 (en) * | 1995-06-15 | 1996-12-19 | Mitsubishi Electric Corp | Control method for communications system |
| US5849235A (en) * | 1994-03-02 | 1998-12-15 | W. L. Gore & Associates, Inc. | Catalyst retaining apparatus and method of making and using same |
| JP2004104293A (en) * | 2002-09-06 | 2004-04-02 | Mitsubishi Electric Corp | Retransmission control method and communication apparatus |
-
1990
- 1990-03-27 JP JP7559290A patent/JPH03276934A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5754531A (en) * | 1992-06-15 | 1998-05-19 | Mitsubishi Denki Kabushiki Kaisha | Communication control method and communication apparatus |
| WO1994019076A1 (en) * | 1993-02-17 | 1994-09-01 | Kabushiki Kaisha Ace Denken | Game house system utilizing storage medium |
| US5741184A (en) * | 1993-02-17 | 1998-04-21 | Kabushiki Kaisha Ace Denken | Game hall system utilizing storage media |
| US6398648B1 (en) | 1993-02-17 | 2002-06-04 | Ace Denken Kabushiki Kaisha | Game hall system utilizing storage media with adjustment means for stakes |
| US5849235A (en) * | 1994-03-02 | 1998-12-15 | W. L. Gore & Associates, Inc. | Catalyst retaining apparatus and method of making and using same |
| US5891402A (en) * | 1994-03-02 | 1999-04-06 | W. L. Gore & Associates, Inc. | Catalyst retaining apparatus and use in an ozone filter |
| JPH08153053A (en) * | 1994-11-28 | 1996-06-11 | Nec Software Ltd | Method and device for data transfer |
| DE19547000A1 (en) * | 1995-06-15 | 1996-12-19 | Mitsubishi Electric Corp | Control method for communications system |
| DE19547000C2 (en) * | 1995-06-15 | 1997-06-19 | Mitsubishi Electric Corp | Communication control method and communication device |
| JP2004104293A (en) * | 2002-09-06 | 2004-04-02 | Mitsubishi Electric Corp | Retransmission control method and communication apparatus |
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