JPH02152344A - Loop-type multiplexer - Google Patents

Loop-type multiplexer

Info

Publication number
JPH02152344A
JPH02152344A JP30613388A JP30613388A JPH02152344A JP H02152344 A JPH02152344 A JP H02152344A JP 30613388 A JP30613388 A JP 30613388A JP 30613388 A JP30613388 A JP 30613388A JP H02152344 A JPH02152344 A JP H02152344A
Authority
JP
Japan
Prior art keywords
circuit
signal
multiplexed
time slot
multiplexing
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.)
Granted
Application number
JP30613388A
Other languages
Japanese (ja)
Other versions
JP2679184B2 (en
Inventor
Ikuo Kodama
児玉 育雄
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP30613388A priority Critical patent/JP2679184B2/en
Publication of JPH02152344A publication Critical patent/JPH02152344A/en
Application granted granted Critical
Publication of JP2679184B2 publication Critical patent/JP2679184B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Time-Division Multiplex Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To realize line connection in node by providing a time slot converting circuit. CONSTITUTION:A reception signal (a), which is multiplexed with time division, is inputted from a loop transmission line to an inserting circuit 1 and a multiplexing circuit 5. On the other hand, a signal (c) multiplexed in a multiplexing circuit 2 is sent through the insert circuit 1 to the loop transmission line and inputted to the circuit 5 for the line connection in node. The circuit 1 selects a line passing the node and a line transmitted from the node and received in the other node at every time slot. Then, the signal (c) is inserted to the signal (a) from the transmission line and a multiplexing signal (b) to the transmission line is prepared. On the other hand, for a signal (d), for which the signals (a) and (c) are multiplexed, time slot conversion is executed in a time slot conversion circuit 6 and the signal (d) is separated in a separating circuit 3. Thus, the line connection in node is realized.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、1つの多重化装置をノードとし、ループ形時
分割多重伝送路上に複数のノードを配置したときの回線
接続に関し、特に4つのノード内における回線接続に関
するものである。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to line connections when one multiplexing device is used as a node and a plurality of nodes are arranged on a loop time division multiplex transmission path, and in particular, four This relates to line connections within nodes.

〔従来の技術〕[Conventional technology]

従来、この種のループ形多重化装置としては、例えば第
3図に示すものが利用されてきた。同図において、1は
インサート回路(SEL) 、2は多重化回路(MUX
) 、3は分離回路(DMUX)、4はタイムスロット
制御回路(CONT)である。
Conventionally, as this type of loop multiplexer, for example, the one shown in FIG. 3 has been used. In the same figure, 1 is an insert circuit (SEL), and 2 is a multiplex circuit (MUX).
), 3 is a separation circuit (DMUX), and 4 is a time slot control circuit (CONT).

第3図の装置は、ループ形の時分割多重化された受信信
号aから、自ノードと回線接続されるタイムスロットを
分離回路3で分離し、一方、多重化回路2で、分離した
タイムスロットと同一のタイムスロットに回線を多重化
し、インサート回路1にて受信信号aと組み合わせ、時
分割多重化された送信信号すを得る。タイムスロット制
御回路4は上記多重分離、インサートのタイムスロット
制?1’lを行なうものである。
In the device shown in FIG. 3, a separation circuit 3 separates the time slots connected to the own node from a received signal a that has been time-division multiplexed in a loop, and a multiplexing circuit 2 separates the time slots from the loop-type time division multiplexed received signal a. The lines are multiplexed in the same time slot, and combined with the received signal a in the insert circuit 1 to obtain a time-division multiplexed transmission signal S. Does the time slot control circuit 4 use the above demultiplexing and insert time slot system? 1'l is performed.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した従来のループ形多重化装置は、異なる2つのノ
ード間にて任意の回線接続が可能であるが、時分割多重
化された信号のタイムスロット変換機能がないため、自
ノード内の異なる信号源間の双方向回線接続が実現でき
ないという欠点があった。
The conventional loop multiplexer described above can connect any line between two different nodes, but it does not have a time slot conversion function for time division multiplexed signals, so different signals within the own node cannot be connected. The drawback was that bidirectional line connections between sources could not be realized.

〔課題を解決するための手段〕[Means to solve the problem]

このような欠点を除去するために本発明は、複数の低速
信号を多重化する第1の多重化回路と、伝送路からの多
重化受信信号に第1の多重化回路の出力である第1の多
重化信号を挿入して伝送路への多重化送信信号を作成す
るインサート回路と、多重化受信信号と第1の多重化信
号を多重化する第2の多重化回路と、この第2の多重化
回路の出力をタイムスロット変換するタイムスロット変
換回路と、タイムスロット変換された多重化信号を複数
の低速信号に分離する分離回路と、インサート回路、第
1の多重化回路および分離回路のタイムスロット制御を
行なうタイムスロット制御回路とを設けるようにしたも
のである。
In order to eliminate such drawbacks, the present invention provides a first multiplexing circuit that multiplexes a plurality of low-speed signals, and a first multiplexing circuit that multiplexes the multiplexed received signal from the transmission path, which is the output of the first multiplexing circuit. an insert circuit that inserts the multiplexed signal of the first multiplexed signal to create a multiplexed transmission signal to the transmission path; a second multiplexing circuit that multiplexes the multiplexed received signal and the first multiplexed signal; A time slot conversion circuit that converts the output of the multiplexing circuit into time slots, a separation circuit that separates the multiplexed signal subjected to the time slot conversion into a plurality of low-speed signals, an insert circuit, the first multiplexing circuit, and the separation circuit. A time slot control circuit for performing slot control is provided.

〔作用〕[Effect]

本発明によるループ形多重化装置においては、タイムス
ロット変換が可能となる。
In the loop multiplexer according to the invention, time slot conversion is possible.

〔実施例〕〔Example〕

第1図は本発明によるループ形多重化装置の一実施例を
示す系統図であり、第2図は第1図の装置の動作を説明
するためのタイムチャートである。
FIG. 1 is a system diagram showing an embodiment of a loop multiplexing device according to the present invention, and FIG. 2 is a time chart for explaining the operation of the device shown in FIG.

第1図において、■はインサート回路(S E L)、
2は第1の多重化回路(MUX) 、3は分離回路(D
MUX) 、4はタイムスロット制御回路(CONT)
 、5は第2の多重化回路(MUX) 、6はタイムス
ロット変換回路(TSI)である。
In Fig. 1, ■ is an insert circuit (SEL),
2 is the first multiplexing circuit (MUX), 3 is the separation circuit (D
MUX), 4 is a time slot control circuit (CONT)
, 5 is a second multiplexing circuit (MUX), and 6 is a time slot conversion circuit (TSI).

次に、このように構成された装置の動作について第1図
、第2図を用いて説明する。第1図で、ループ伝送路か
らの時分割多重化された受信信号a (第2図(b)参
照)は、ノードを通過する回線を実現するためにインサ
ート回路1に入力されるとともに、ノードで時分割多重
化信号を分離するため多重化回路5に入力される。一方
、多重化回路2で多重化された第1の多重化信号C(第
2図(a)参照)はループ伝送路へ送信するためにイン
サート回路1に入力されるとともに、ノード内回線接続
のために多重化回路5に入力される。インサート回路1
は、ノードを通過するバイパス回線と、このノードから
送信し他ノードで受信する回線とをタイムスロット毎に
選択するものであり、伝送路からの多重化受信信号aに
第1の多重化信号Cを挿入して伝送路への多重化送信信
号b(第2図(f)参照)を作成する。多重化信号aと
Cを多重化した第2の多重化信号d (第2図(C)参
照)はタイムスロット変換回路6にてタイムスロット変
換すれ、多重化信号e(第2図(114)参照)を得る
。このタイムスロット変換回路6にて、第2図(C1,
(d)に例示しであるように、a 2”a 3.  a
 5”a 7とタイムスロット変換され、さらに分離回
路3で分離され、ノード内回線接続が実現される。なお
、第°2図(d)に示す信号はタイムスロット変換回路
6内部の信号である。
Next, the operation of the apparatus configured as described above will be explained using FIGS. 1 and 2. In Fig. 1, the time-division multiplexed received signal a from the loop transmission path (see Fig. 2(b)) is input to the insert circuit 1 to realize a line passing through the node, and The signal is then input to a multiplexing circuit 5 for separating the time-division multiplexed signal. On the other hand, the first multiplexed signal C (see Fig. 2(a)) multiplexed by the multiplexing circuit 2 is input to the insert circuit 1 for transmission to the loop transmission path, and is also input to the in-node line connection. The signal is input to the multiplexing circuit 5 for this purpose. insert circuit 1
selects a bypass line that passes through a node and a line that is transmitted from this node and received by other nodes for each time slot, and the first multiplexed signal C is added to the multiplexed received signal a from the transmission path. is inserted to create a multiplexed transmission signal b (see FIG. 2(f)) to be sent to the transmission path. The second multiplexed signal d (see FIG. 2 (C)) obtained by multiplexing the multiplexed signals a and C is subjected to time slot conversion in the time slot conversion circuit 6, and becomes the multiplexed signal e (see FIG. 2 (114)). ). In this time slot conversion circuit 6, as shown in FIG.
As illustrated in (d), a 2”a 3.a
5''a7, and is further separated by the separation circuit 3 to realize intra-node line connection.The signal shown in FIG. 2(d) is a signal inside the time slot conversion circuit 6. .

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明によるループ形多重化装置は
、タイムスロット変換回路を設けたことニヨリ、タイム
スロット変換が可能となり、ノード内回線接続を実現で
きる効果がある。
As explained above, the loop multiplexer according to the present invention is provided with a time slot conversion circuit, thereby enabling time slot conversion, and has the effect of realizing intra-node line connection.

この効果は、特に、ノード内の複数の端末からの信号源
を時分割多重化し、ループ形伝送路とは別の同一ノード
に接続される伝送路へ送信し、かつその伝送路から時分
割多重化された信号を受信し、上記複数の端末への受信
信号に分離する場合等に大きなものとなる。
This effect is particularly effective when signal sources from multiple terminals within a node are time-division multiplexed, transmitted to a transmission line connected to the same node that is different from the loop transmission line, and time-division multiplexed from that transmission line. This becomes large when receiving a converted signal and separating it into received signals for the plurality of terminals.

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

第1図は本発明によるループ形多重化装置の一実施例を
示す系統図、第2図は第1図の装置の動作を説明するた
めのタイムチャート、第3図は従来のループ形多重化装
置を示す系統図である。 l・・・インサート回路、2・・・第1の多重化回路、
3・・・分離回路、4・・・タイムスロット制御回路、
5・・・第2の多重化回路、6・・・タイムスロット変
換回路。 特許出願人   日本電気株式会社
Fig. 1 is a system diagram showing an embodiment of a loop type multiplexing device according to the present invention, Fig. 2 is a time chart for explaining the operation of the device in Fig. 1, and Fig. 3 is a conventional loop type multiplexing device. It is a system diagram showing an apparatus. l...insert circuit, 2...first multiplexing circuit,
3... Separation circuit, 4... Time slot control circuit,
5... Second multiplexing circuit, 6... Time slot conversion circuit. Patent applicant: NEC Corporation

Claims (1)

【特許請求の範囲】[Claims] 複数の低速信号を多重化する第1の多重化回路と、伝送
路からの多重化受信信号に前記第1の多重化回路の出力
である第1の多重化信号を挿入して伝送路への多重化送
信信号を作成するインサート回路と、前記多重化受信信
号と前記第1の多重化信号を多重化する第2の多重化回
路と、この第2の多重化回路の出力をタイムスロット変
換するタイムスロット変換回路と、タイムスロット変換
された多重化信号を複数の低速信号に分離する分離回路
と、前記インサート回路、第1の多重化回路および分離
回路のタイムスロット制御を行なうタイムスロット制御
回路とを備えたことを特徴とするループ形多重化装置。
a first multiplexing circuit that multiplexes a plurality of low-speed signals; and a first multiplexing signal, which is an output of the first multiplexing circuit, inserted into the multiplexed received signal from the transmission path and transmitting the first multiplexed signal to the transmission path. an insert circuit for creating a multiplexed transmission signal; a second multiplexing circuit for multiplexing the multiplexed received signal and the first multiplexed signal; and time slot conversion for the output of the second multiplexing circuit. a time slot conversion circuit; a separation circuit that separates the multiplexed signal subjected to the time slot conversion into a plurality of low-speed signals; and a time slot control circuit that controls the time slots of the insert circuit, the first multiplexing circuit, and the separation circuit; A loop multiplexer characterized by comprising:
JP30613388A 1988-12-05 1988-12-05 Loop type multiplexer Expired - Lifetime JP2679184B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30613388A JP2679184B2 (en) 1988-12-05 1988-12-05 Loop type multiplexer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30613388A JP2679184B2 (en) 1988-12-05 1988-12-05 Loop type multiplexer

Publications (2)

Publication Number Publication Date
JPH02152344A true JPH02152344A (en) 1990-06-12
JP2679184B2 JP2679184B2 (en) 1997-11-19

Family

ID=17953452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30613388A Expired - Lifetime JP2679184B2 (en) 1988-12-05 1988-12-05 Loop type multiplexer

Country Status (1)

Country Link
JP (1) JP2679184B2 (en)

Also Published As

Publication number Publication date
JP2679184B2 (en) 1997-11-19

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