JPH0220026B2 - - Google Patents

Info

Publication number
JPH0220026B2
JPH0220026B2 JP57069022A JP6902282A JPH0220026B2 JP H0220026 B2 JPH0220026 B2 JP H0220026B2 JP 57069022 A JP57069022 A JP 57069022A JP 6902282 A JP6902282 A JP 6902282A JP H0220026 B2 JPH0220026 B2 JP H0220026B2
Authority
JP
Japan
Prior art keywords
data
communication device
transmission path
communication devices
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
Application number
JP57069022A
Other languages
Japanese (ja)
Other versions
JPS58184849A (en
Inventor
Hirofumi Kira
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6902282A priority Critical patent/JPS58184849A/en
Publication of JPS58184849A publication Critical patent/JPS58184849A/en
Publication of JPH0220026B2 publication Critical patent/JPH0220026B2/ja
Granted 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]
    • H04L12/40Bus networks
    • H04L12/407Bus networks with decentralised control

Description

【発明の詳細な説明】 この発明は、共通の伝送路を介して相互にデー
タを送受信する通信装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to communication devices that mutually transmit and receive data via a common transmission path.

従来この種の装置として第1図に示すものがあ
つた。図において、1は1本の同軸ケーブル、光
フアイバー等の伝送路、2は各通信装置が伝送路
1を専有するタイミングに対して基準タイミング
を与えるマスター局、3−1〜3−nは相互にデ
ータを送受信する通信装置である。
A conventional device of this type is shown in FIG. In the figure, 1 is a transmission line such as a coaxial cable or optical fiber, 2 is a master station that provides reference timing for the timing when each communication device exclusively uses transmission line 1, and 3-1 to 3-n are mutual communication lines. A communication device that sends and receives data to and from

次に動作について説明する。各通信装置3−1
〜3−nには第2図に示すようなタイミングが割
当てられ、このタイミング期間内で各通信装置3
−1〜3−nは伝送路1を専有してデータの送信
を行う。
Next, the operation will be explained. Each communication device 3-1
~3-n are assigned timings as shown in FIG. 2, and each communication device 3 within this timing period.
-1 to 3-n exclusively use the transmission path 1 to transmit data.

即ち、マスター局2が基準タイミングT0を与
え、基準タイミングT0から起算してT1のタイ
ミングを通信装置3−1に、T2のタイミングを
通信装置3−2に、以下同様にしてToのタイミ
ングを通信装置3−nにまで各タイミングが与え
られる。これらの通信装置3−1〜3−nは与え
られたタイミングT1〜Toを使つて所定の宛先の
通信装置にデータを送信することができる。送信
データのフレーム構成は第3図に示す様な形式で
フラグ(F)で囲まれたアドレスフイールド(A)、コマ
ンドフイールド(C)、データフイールド
(DATA)、チエツクシーケンス(FCS)を有す
るものが一般的に使われている。
That is, the master station 2 gives a reference timing T0, and counting from the reference timing T0, the timing of T1 is sent to the communication device 3-1, the timing of T2 is sent to the communication device 3-2, and so on . Each timing is given to the communication device 3-n. These communication devices 3-1 to 3-n can transmit data to a predetermined destination communication device using the given timings T 1 to T o . The frame structure of the transmitted data is as shown in Figure 3, and has an address field (A) surrounded by flags (F), a command field (C), a data field (DATA), and a check sequence (FCS). Commonly used.

受信側となる通信装置は、伝送路1上の上記フ
レームを一旦受信し、自己アドレスと一致するも
ののみを取込みコマンドに従つてデータ処理を行
い、接続された端末装置等は一致検出に同期して
動作する。
The communication device on the receiving side once receives the above frames on transmission path 1, takes in only those that match its own address, processes the data according to the command, and the connected terminal devices etc. synchronize with the match detection. It works.

従来の各通信装置は、他の通信装置から送信さ
れた全てのデータを一旦受信し、自己アドレスと
一致したもののみを取込むように構成されている
ので、送信先のアドレスを設定する事及び自己ア
ドレスとの一致検出をすることが必要であるとい
う欠点があつた。また、受信したデータが自己ア
ドレスと一致しない限り待期状態なので、特定の
相手のデータが欲しいときでも、その相手から自
己が指定されない限りデータを受けることができ
ず、効率が低い欠点があつた。
Each conventional communication device is configured to once receive all data sent from other communication devices and capture only the data that matches its own address, so it is easy to set the destination address and The disadvantage is that it is necessary to detect a match with the own address. In addition, the system is in a waiting state unless the received data matches its own address, so even if you want data from a specific party, you cannot receive the data unless that party specifies you, which has the disadvantage of low efficiency. .

この発明は上記のような従来のものの欠点を除
去することを目的になされたもので、各通信装置
は他の通信装置から送信された全てのデータを受
信し、且つ記憶することにより、発信元での送信
先アドレス認定および受信側でのアドレス一致検
出を不要とし、送受信部の回路構成を単純化する
ものである。
This invention was made for the purpose of eliminating the drawbacks of the conventional ones as described above, and each communication device receives and stores all the data transmitted from other communication devices, so that it can communicate with the sender. This eliminates the need for destination address verification on the receiving side and address matching detection on the receiving side, and simplifies the circuit configuration of the transmitting/receiving section.

また、この発明は他の通信装置が発信したすべ
てのデータを記憶するようにしたので、他の通信
装置のデータを待期することなく直ちに利用で
き、効率的なものである。
Furthermore, since the present invention stores all data sent by other communication devices, it is efficient because the data from other communication devices can be used immediately without waiting.

以下、この発明の一実施例を図について説明す
る。第4図において、4aは送信部、4bは授信
部、5は各通信装置が自己の送信データを格納し
ている送信エリヤ(図中、斜線部)と他の通信装
置からの受信データを記憶する受信エリヤ(領
域)を有する共有メモリ(記憶部)である。
An embodiment of the present invention will be described below with reference to the drawings. In FIG. 4, 4a is a transmitter, 4b is a transmitter, and 5 is a transmission area (shaded area in the figure) where each communication device stores its own transmission data and data received from other communication devices. This is a shared memory (storage unit) that has a reception area (area) for

次に実施例の動作について説明する。通信装置
3−1は第2図に示した自己の送信タイミング
T1が来たとき、共有メモル5の送信エリヤA1
データを送信部4aが読み出し、他の通信装置に
向けて送信先アドレスを付することなく送信す
る。第4図に矢印で示したように、各通信装置の
受信部4bは、他の通信装置が送出した伝送路上
のデータを受信して対応する受信エリヤに書き込
む。ここで、対応する受信エリヤとは、例えば、
通信装置3−lが送出したデータが、受信エリヤ
Al(l=1〜n)に対応していることをいう。各
通信装置はマスター局2から基準タイミングT0
を受けて、自己がデータを送出できる期間Tl(l
=1〜n)を決定しているので、他の通信装置が
データを送出している期間を特定することは容易
である。
Next, the operation of the embodiment will be explained. The communication device 3-1 has its own transmission timing shown in FIG.
When T 1 comes, the transmitter 4a reads the data in the transmission area A 1 of the shared memory 5 and transmits it to another communication device without attaching a destination address. As indicated by arrows in FIG. 4, the receiving section 4b of each communication device receives data on the transmission path sent out by other communication devices and writes it into the corresponding reception area. Here, the corresponding reception area is, for example,
The data sent by the communication device 3-l is
This means that it corresponds to Al (l=1 to n). Each communication device receives the reference timing T0 from the master station 2.
The period Tl (l
=1 to n), it is easy to specify the period during which other communication devices are transmitting data.

通信装置3−2についてを、自己の送信エリヤ
AZのデータを送信し、他の通信装置の該当受信
エリヤAZに書き込むことができる。以下同様に
して、送信タイミングT3〜Toに従つて同様な送
受信が通信装置3−nまで行われ再び通信装置3
−1に戻り送信タイミングに従い周期的に継続さ
れる。
Regarding the communication device 3-2, its own transmission area
AZ data can be sent and written to the corresponding reception area AZ of other communication devices. Thereafter, similar transmission and reception is performed up to the communication device 3-n according to the transmission timings T 3 to T o, and then again to the communication device 3.
-1 and continues periodically according to the transmission timing.

この様にして各通信装置は、全通信装置から送
信された伝送路1上のデータを待期状態なく取込
むことができ、結果として全通信装置で共有でき
る伝送データの共有メモリ空間を有することにな
る。
In this way, each communication device can take in the data on the transmission path 1 transmitted from all communication devices without waiting, and as a result has a shared memory space for transmission data that can be shared by all communication devices. become.

なお、上記実施例では単一の伝送路を使用した
場合を示したが、ループ状及び複数の伝送路であ
つてもよく、伝送路を全通信装置で共有し、その
伝送モードが同報形式で行われるもの全てに適用
できる。
Although the above embodiment shows a case where a single transmission path is used, it may be a loop or multiple transmission paths, and the transmission path is shared by all communication devices, and the transmission mode is broadcast format. It can be applied to everything that is done.

以下のように、この発明は他の通信装置から送
信された全てのデータを受信し、且つ記憶するよ
うに各通信装置を構成したので、送信先アドレス
設定およびアドレス一致検出が不要となり、送受
信部の回路構成が単純化される。また各通信装置
のメモリには他の通信装置の伝送データの全てが
記憶されているので、他の通信装置のデータを待
期することなく直ちに利用することができ、効率
的である。このことは、通信装置に接続される端
末装置は非同期アクセス方式で良いことを意味す
る。
As described below, in the present invention, each communication device is configured to receive and store all data transmitted from other communication devices, so setting a destination address and detecting address matching are unnecessary, and the transmitting/receiving unit The circuit configuration of is simplified. Furthermore, since all of the data transmitted by other communication devices is stored in the memory of each communication device, data from other communication devices can be used immediately without waiting, which is efficient. This means that the terminal device connected to the communication device may use an asynchronous access method.

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

第1図は従来の通信装置を示すシステム構成
図、第2図は送信タイミングチヤート、第3図は
従来の通信装置の伝送フレームを示すフレーム構
成図、第4図はこの発明に係る通信装置の一実施
例を示す機能説明図である。 図において、1は伝送路、2はマスター局、3
−1〜3−nは通信装置、4aは送信部、4bは
受信部、5は共有メモリである。なお、図中、同
一符号は同一、又は相当部分を示す。
FIG. 1 is a system configuration diagram showing a conventional communication device, FIG. 2 is a transmission timing chart, FIG. 3 is a frame configuration diagram showing transmission frames of the conventional communication device, and FIG. 4 is a diagram of a communication device according to the present invention. It is a functional explanatory diagram showing one example. In the figure, 1 is a transmission path, 2 is a master station, and 3 is a transmission line.
-1 to 3-n are communication devices, 4a is a transmitter, 4b is a receiver, and 5 is a shared memory. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

【特許請求の範囲】[Claims] 1 共通の伝送路にそれぞれ接続され、前記伝送
路に接続されたマスター局から与えられた基準タ
イミングから起算した所定の期間内に、前記伝送
路に対してデータを送出する通信装置において、
少なくとも前記伝送路に接続された他の通信装置
の局数分の領域を有する記憶部であつて、前記領
域は前記所定の期間内に送出されるデータ量を記
憶しうる容量を有する記憶部と、前記基準タイミ
ングから起算した複数の各期間に前記伝送部から
受信したデータを、前記各期間に対応した前記領
域に格納する受信部とを備えたことを特徴とする
通信装置。
1. Communication devices each connected to a common transmission path and transmitting data to the transmission path within a predetermined period calculated from a reference timing given from a master station connected to the transmission path,
a storage unit having an area for at least the number of stations of other communication devices connected to the transmission path, the area having a capacity to store an amount of data sent within the predetermined period; , a receiving section that stores data received from the transmitting section in each of a plurality of periods calculated from the reference timing in the area corresponding to each of the periods.
JP6902282A 1982-04-22 1982-04-22 Communicating device Granted JPS58184849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6902282A JPS58184849A (en) 1982-04-22 1982-04-22 Communicating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6902282A JPS58184849A (en) 1982-04-22 1982-04-22 Communicating device

Publications (2)

Publication Number Publication Date
JPS58184849A JPS58184849A (en) 1983-10-28
JPH0220026B2 true JPH0220026B2 (en) 1990-05-07

Family

ID=13390535

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6902282A Granted JPS58184849A (en) 1982-04-22 1982-04-22 Communicating device

Country Status (1)

Country Link
JP (1) JPS58184849A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5992653A (en) * 1982-11-19 1984-05-28 Toshiba Corp Data transmitter
JPS6024745A (en) * 1983-07-20 1985-02-07 Yaskawa Electric Mfg Co Ltd Method and device for signal transmission
JPS60169252A (en) * 1984-02-10 1985-09-02 Nec Corp Network managing system
JPS61123238A (en) * 1984-11-20 1986-06-11 Mitsubishi Electric Corp Data transmission device
JPS63120540A (en) * 1986-11-10 1988-05-24 Toshiba Corp Close coupling data transmitter
JPS63261939A (en) * 1987-04-20 1988-10-28 Toshiba Corp Data collection device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5464279A (en) * 1977-10-28 1979-05-23 Hokushin Electric Works Device of collecting and delivering data for controlling process

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5464279A (en) * 1977-10-28 1979-05-23 Hokushin Electric Works Device of collecting and delivering data for controlling process

Also Published As

Publication number Publication date
JPS58184849A (en) 1983-10-28

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