JPS6178237A - Pull-in system - Google Patents
Pull-in systemInfo
- Publication number
- JPS6178237A JPS6178237A JP59201021A JP20102184A JPS6178237A JP S6178237 A JPS6178237 A JP S6178237A JP 59201021 A JP59201021 A JP 59201021A JP 20102184 A JP20102184 A JP 20102184A JP S6178237 A JPS6178237 A JP S6178237A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- pulse
- signal
- training
- circuit
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
- H04L5/1484—Two-way operation using the same type of signal, i.e. duplex using time-sharing operating bytewise
- H04L5/1492—Two-way operation using the same type of signal, i.e. duplex using time-sharing operating bytewise with time compression, e.g. operating according to the ping-pong technique
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Bidirectional Digital Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、４ノービス（、θ合ディジタルＡｋ１ （ｌ
Ｓ ｎＮ）に使用する、２線１（伝送路を用いでＹイ
７シタル双方向伝送を実現する為の］ｌ−″１−−１−
ヤンセフー型：１’ ４ 、メタル加入者線伝送装置の
にＩ−キャンｅラー及び夕・イミング再／Ｖ回路の引き
込めカｆ（の改良に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides four novice (, θ combined digital Ak1 (l
2-wire 1 (to realize bidirectional transmission using a transmission line) l-''1--1- used for S nN)
Yansefu type: 1' 4 , Concerning the improvement of the I-canceller and evening/timing re/V circuit pull-in function of metal subscriber line transmission equipment.
ｌ−配装７ｆにｔ；いては、タイミング出７１回にとの
引き込、７Ｊ、Ｉ冒１Ｆ送（、−’＋ （ｉｊ ５ｊの
ニー１−に３１す々Ｊ］古今受（１ず父上、：ｌ −−
１−ヤンＬ！７−の引き１３め時（，１受１．；、１１
１号（こよｉＩｌ姑古を受＋ＪないこＬか望：ｒ 、４
ｑる。l-In the arrangement 7f, the timing is 71 times and the pull-in, 7J, I attack 1F sending (,-'+ (ij 5j's knee 1- to 31 Suzu J) Kokinuke (1st Father, :l --
1-Yan L! At the 13th time of the draw of 7- (, 1 hit 1.;, 11
No. 1 (Koyo IIl Magu wo Uke + J Naiko Lka Nozomi: r, 4
qru.
（従来の技ｆ＋ｉと発明か解決し７ようと４る問題１１
弓従東の）配装；６°に打いて（Ｊ、タイミンク山）１
回路の引き込ツノは送１７８（ｉコ１υのイｊる１す１
間ごもｆｉ）’、； ＝ ） Ｃいる為、４綿をＱ綿に
変換４−るハ（ｔ７”ＩＩ １回路（ハ２線線路側との
インピーダンス不整６ζこ、ｊイ、」χ１．）（４号の
１二１−に、Ｉす々ｌ）害を受ｉ＋ 、 又コ−１＝１
４〕・セラーの引き込みり、ｌ受信化−Ｊのイ１ン、１
すｌ Ｉｊｌ−でもｊ１ノ、騙っている鳥骨（八（戸１
５月こより好古を受（Ｊる問題１：、１、かある。(Conventional technique f + i and invention or problem 11 to solve 7
Bowman East) Arrangement; Hit at 6° (J, Taiming Mountain) 1
The lead-in point of the circuit is 178
Intermediate fi)', ; = ) Since C, convert 4 cotton to Q cotton 4-ru C (t7"II 1 circuit (C 2 Impedance mismatch with the line side 6ζ, j I, "χ1. ) (in No. 4 121-, I su l) harmed i+, also co-1=1
4] ・Attraction of sellers, l reception - J's In, 1
Sl Ijl-But j1ノ, the bird bone that is lying (8 (door 1)
Since May, I have received a good old book.
上記問題点は、伝送信号はフレーム構成をとり、マスタ
ー側よりの伝送信号はフレームパルス、トレーニングパ
ルス、送信データの順とし、スレーブ側よりの伝送信号
はマスター側よりのフレームパルスにより同期をとった
後、フレームパルス。The above problem is that the transmission signal has a frame structure, the transmission signal from the master side is a frame pulse, training pulse, and transmission data in that order, and the transmission signal from the slave side is synchronized with the frame pulse from the master side. After that, frame pulse.
送信データ、トレーニングパルスの順とし、１１つマス
ター側スレーブ側共、トレーニングパルス受信期間及び
マスター、スレーブ間の伝達遅延時間の２倍の７１１間
は伝送信号を送信しなくし、トレーニングパルス送信時
エコーキャンセラーの引き込みを行い、トレーニングパ
ルス受（ａ時タイミング再生引き込みを行うようにした
本発明の引き込み方式により解決される。Transmission data and training pulses are sent in this order, and transmission signals are not transmitted on both the master and slave sides during the training pulse reception period and 711, which is twice the transmission delay time between the master and slave, and an echo canceller is used when transmitting training pulses. This problem is solved by the pull-in method of the present invention, which performs the pull-in at the time of training pulse reception (timing regeneration pull-in at time a).
本発明によれば、トレーニングパルス送信時エコーキャ
ンセラーの引き込みを行い、トレーニングパルス受信時
タイミング再生回路の引き込みを行うが、トレーニング
パルス受信期間及び相手側よりの伝送信号遅延時間の２
倍の聞伝送信号を送信しなくし、又スレーブ側はマスタ
ー側よりのフレーｌ、パルスを受信し同期をとった後払
■信号を送信しているので、エコーキャンセラー引き込
み時は受信信号は無く又タイミング再生回路用き込み時
は送信信号は無いので、これ等による妨害を受けずに、
夫々引き込みを行うことが出来る。According to the present invention, the echo canceller is pulled in when the training pulse is transmitted, and the timing regeneration circuit is pulled in when the training pulse is received.
Since the slave side does not send double transmission signals, and the slave side receives the frame and pulse from the master side and transmits the synchronized deferred payment ■ signal, there is no reception signal when the echo canceller is engaged. There is no transmission signal when the timing regeneration circuit is used, so there is no interference from such things.
It is possible to draw in each.
第１図は本発明の実施例のブロック図で、（Ａ）はマス
ター側（ｎ）はスレーブ側を示し、第２図は第１図の各
部の波形のタイム九−Ｉ・で（Ａ）はマスター側の送信
信号、（Ｂ）はマスター側の受信信号、（Ｃ）はスレー
ブ側の送信信号、（Ｄ）はスレーブ側の受信信号を示す
。Fig. 1 is a block diagram of an embodiment of the present invention, (A) shows the master side (n) shows the slave side, and Fig. 2 shows the waveforms of each part in Fig. 1 at time 9-I. shows a transmitted signal on the master side, (B) shows a received signal on the master side, (C) shows a transmitted signal on the slave side, and (D) shows a received signal on the slave side.
図中１ 、 １４はフレームパルス発生器、２．１５は
トレーニングパルス発生器、３，１６はセレクタ、４，
１７はユニポーラ・バイポーラ変換器（以下Ｕ／Ｂ変換
回路と称す）、５．１８はバイブリド回路、６．９．２
１は制御回路、７．１９はエコーキャンセラー、８，２
０は同月回路、１０．２２はタイミング再生回路、Ｉ＋
、２３は０゜１を識別する識別回路、１２．２４は線路
歪を補償する等化器、１３．２５はエコーキャンセラー
よりの擬似エコーでエコーを打ち消す為の減算回路を示
す。In the figure, 1 and 14 are frame pulse generators, 2.15 is a training pulse generator, 3 and 16 are selectors, 4,
17 is a unipolar/bipolar converter (hereinafter referred to as U/B conversion circuit), 5.18 is a bibride circuit, 6.9.2
1 is a control circuit, 7.19 is an echo canceller, 8, 2
0 is the same month circuit, 10.22 is the timing regeneration circuit, I+
, 23 is an identification circuit for identifying 0°1, 12.24 is an equalizer for compensating line distortion, and 13.25 is a subtraction circuit for canceling the echo with a pseudo echo from an echo canceller.
第１図（Ａ）及び第２図（Ａ）を用いマスター側の送信
動作より説明すると、ｌフレーム期間Ｔ内にて、制御回
路６の制御により、第２図（Ａ）に示すごとく、フレー
ムパルス発生器ｌよりのフレームパルス及びトレーニン
グパルス発生！２よりのトレーニングパルス及び送信デ
ータをセレクタ３にて選択し、且つマスター、スレーブ
間の伝達遅延時間の２倍の時間Ｔ、及びこの期間につづ
＜ １−レーニングパルス受信期間Ｔ、の、何も送信し
ない時間間隔を設け、Ｕ／Ｂ変換回路４にてバイポーラ
信号に変換し、バイブリド回路５を経て２線式伝送路に
送出され、スレーブ側に送信される。To explain the transmission operation on the master side using FIG. 1(A) and FIG. 2(A), within one frame period T, a frame is transmitted as shown in FIG. 2(A) under the control of the control circuit 6. Frame pulse and training pulse generation from pulse generator l! The training pulse and transmission data from 2 are selected by the selector 3, and a time T that is twice the transmission delay time between the master and the slave, and following this period < 1 - training pulse reception period T, nothing is A time interval is provided during which no transmission is performed, and the signal is converted into a bipolar signal by the U/B conversion circuit 4, sent out to the two-wire transmission line via the bibride circuit 5, and transmitted to the slave side.
この時フレームパルス、トレーニングパルス。At this time frame pulse, training pulse.
送信データはバイブリド回路５と２線式伝送路とのイン
ピーダンスの不整合により所謂エコーが第２図（Ｂ）の
斜線で示す如く受信側に廻り込む。Due to the impedance mismatch between the vibrid circuit 5 and the two-wire transmission line, so-called echoes of the transmitted data go around to the receiving side as shown by diagonal lines in FIG. 2(B).
そこで、エコーキャンセラー７の引き込みは第２図（Ａ
）のトレーニングパルスＣを送信した時制？１１回！／
３６の制ｉｌｌにより行う。Therefore, the pull-in of the echo canceller 7 is shown in Figure 2 (A
) in which tense was the training pulse C sent? 11 times! /
It is done by the control of 36.
マスター側よりスレーブ側に送られて来た第２図（Ａ＞
に示す信号はマスター、スレーブ間の伝達遅延時間遅れ
て、第１図（Ｂ）のハイブリ１回路１８を介して第２図
（Ｄ）に示す如く受信され、減算回路２５１等化器２４
．識別回路２３を経て出力され、この出力より同期回路
２０にてフレームパルスによりフレーム同期をとり、制
ｆｆｊ回路２１にて第２１ｍ （ｒ））のａに示すトレ
ーニングパルスによりタイミング再生回路２２の引き込
みを行いタイミングを再４１−シ又制御回路２１の制ｆ
ｉｌにより、１フレ一ム期間内にて第２図（Ｃ）に示す
如くフレームパルス発生器１４よりのフレームパルス及
び送信データ及びトレーニングパルス発生器１５よりの
トレーニングパルスをセレクタＩ６にて選ＩＪ？ Ｌ、
目、つマスター、スレーブ間の伝達遅延時間の２倍及び
）・レーニングバルス受ｆε期間の何も送信しない時間
間隔を設け、ｔＪ ／ Ｂ変換回路１７にてバイポーラ
信号に変換し、バイブリド回路１８を経て２線式伝送路
に送出されマスター側に送（古される。Figure 2 (A>) sent from the master side to the slave side
The signal shown in is received as shown in FIG. 2(D) via the hybrid 1 circuit 18 in FIG.
．． It is outputted via the identification circuit 23, and from this output, the synchronization circuit 20 performs frame synchronization using a frame pulse, and the control ffj circuit 21 uses the training pulse shown in 21m(r)) a to pull in the timing regeneration circuit 22. The control circuit 21 also controls the control circuit 21.
il, the frame pulse and transmission data from the frame pulse generator 14 and the training pulse from the training pulse generator 15 are selected by the selector I6 as shown in FIG. 2(C) within one frame period. L,
tJ/B conversion circuit 17 converts the signal into a bipolar signal, and bibride circuit 18 Then, it is sent out to the two-wire transmission line and sent (used) to the master side.
この時、フレームパルス、送信データ、トレーニングパ
ルスはバイブリド回路１８と２線式伝送路とのインピー
ダンスの不整合により所謂エコーが第２図（Ｄ）の斜線
で示す如く受信側に廻り込む。At this time, a so-called echo of the frame pulse, transmission data, and training pulse goes around to the receiving side as shown by diagonal lines in FIG. 2(D) due to impedance mismatch between the vibrid circuit 18 and the two-wire transmission line.
そこで、エコーキャンセラー１９の引き込みは第２図（
Ｃ）のトレーニングパルスｄを送信した時、制御回路２
１の制御により行う。Therefore, the pull-in of the echo canceller 19 is as shown in Figure 2 (
When the training pulse d of C) is transmitted, the control circuit 2
This is done using the control in step 1.
このスレーブ側よりマスター側に送られた第２図（Ｃ）
に示す信号はスレーブ、マスター間の伝達遅延時間遅れ
て、第１図（八）のバイブリド回路５を介して第２図（
Ｉ３）に示す如く受信され、減算回路１３１等化器１２
．識別回路１１を経て出力され、この出力より同期回路
８にてフレームパルスによりフレーム同期をとり、制御
回路９にて第２１図（Ｂ）のｂに示すトレーニングパル
スによりタイミング再生回路１０の引き込みを１１い、
タイミング再律を行う。Figure 2 (C) sent from this slave side to the master side
The signal shown in FIG. 2 is transmitted through the vibrid circuit 5 shown in FIG. 1 (8) after a transmission delay time between the slave and the master.
I3) is received as shown in FIG.
．． It is outputted through the identification circuit 11, and from this output, the synchronization circuit 8 performs frame synchronization using a frame pulse, and the control circuit 9 uses the training pulse shown in FIG. stomach,
Perform timing re-templation.
このように、スレーブ側ではマスター側のフレームパル
スを受信し同１すＩをとった後送信信号を送信し又マス
ター側スレーブ側ノＬマスター、ス１／−ブ間の伝達遅
延時間の２倍及びトレーニングパルス受信朋間は何も送
信しないので、タイミング再生回路１０．２２の引き込
め時は送イ、ＡＩ、い月Ｉｌｌ ：Ｉ！！口、Ｘ１：＋
−−１−ヤンセラ−７，１９の引き込め時Ｌｌ受信（
５号は；ｌ！！！いので、ごね等の影響を受けずに引き
込みを行うことが出来る。In this way, the slave side receives the frame pulse from the master side, takes the same value, and then transmits the transmission signal, and the transmission delay time between the master side and the slave side is twice the transmission delay time between the master and slave side. Since nothing is transmitted during the training pulse reception period, when the timing regeneration circuit 10.22 is retracted, it is sent, AI, Ill: I! ! Mouth, X1:+
--1-Yansera-7, 19 Ll reception when retracting (
No. 5 is ;l! ! ! Therefore, retraction can be performed without being affected by squeezing or the like.
尚マスター側においては、スレーブ側からのトレーニン
グパルスたりてなく、送（八がＪＡｉｌさね、受１３デ
ータが到来している期間中のパルスを検出して、タイミ
ング再生用のパルスとしく利用″４る事が出来、又スレ
ーブ側においても、マスター側が送信したフレームパル
スを検出し′ζタイミング再４Ｌ用のパルスとして利用
する事も出来る。In addition, the master side does not receive training pulses from the slave side, but detects pulses during the period when data is being received, and uses them as pulses for timing reproduction. Furthermore, on the slave side, it is also possible to detect the frame pulse transmitted by the master side and use it as a pulse for re-timing 4L.
Ｃ発明の効果〕
以１−詳細に説明ｌる如く本発明によれば、タイミング
再生回路の引き込み時は送信信号は無く、又エコーキャ
ンセラーの引き込み時は受信信号は無いので、これ等の
影響を受けずに引き込みを行うことが出来る効果がある
。C. Effects of the Invention] As described in 1-Detailed Description, according to the present invention, there is no transmitting signal when the timing regeneration circuit is engaged, and there is no receiving signal when the echo canceller is engaged, so the effects of these effects can be avoided. It has the effect of being able to pull in without receiving it.
第１図は本発明の実施例のブロック図、第２図は第１図
の各部の波形のタイムチ、−トである。
図において、
１．１４はフレームパルス発生器、
２．１５はトレーニングパルス発生２８．３．１６はセ
レクタ、
４．１７はユニポーラ・バイポーラ変換器、５．１８は
バイブリド回路、
６．９．２１は制御回路、
７．１９はエコーキャンセラー、
８．２０は同期回路、
１０．２２はタイミング再生回路、
１１．２３は識別回路、
１２．２４は等花器、FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a time chart of waveforms at various parts in FIG. 1. In the figure, 1.14 is a frame pulse generator, 2.15 is a training pulse generator, 28.3.16 is a selector, 4.17 is a unipolar-bipolar converter, 5.18 is a bibrid circuit, and 6.9.21 is a Control circuit, 7.19 is an echo canceller, 8.20 is a synchronization circuit, 10.22 is a timing regeneration circuit, 11.23 is an identification circuit, 12.24 is a flower vase,
Claims (1)
為の、エコーキャンセラー型ディジタル加入者線伝送装
置において、伝送信号はフレーム構成をとり、マスター
側よりの伝送信号はフレームパルス、トレーニングパル
ス、送信データの順とし、スレーブ側よりの伝送信号は
、マスター側よりのフレームパルスにより同期をとつた
後、フレームパルス、送信データ、トレーニングパルス
の順とし、且つマスター側スレーブ側共、トレーニング
パルス受信期間及びマスター、スレーブ間の伝送遅延時
間の２倍の期間は伝送信号を送信停止し、トレーニング
パルス送信時エコーキャンセラーの引き込みを行い、ト
レーニングパルス受信時タイミング再生引き込みを行う
ようにしたことを特徴とする引き込み方式。In an echo canceller type digital subscriber line transmission device for realizing digital two-way transmission using a two-wire transmission line, the transmission signal has a frame structure, and the transmission signal from the master side consists of frame pulses, training pulses, The transmission signal from the slave side is synchronized with the frame pulse from the master side, and then the frame pulse, transmission data, and training pulse in this order, and both the master and slave sides have a training pulse reception period. Also, transmission of the transmission signal is stopped during a period twice the transmission delay time between the master and slave, the echo canceller is pulled in when the training pulse is transmitted, and the timing regeneration pull-in is performed when the training pulse is received. Retraction method.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59201021A JPS6178237A (en) | 1984-09-26 | 1984-09-26 | Pull-in system |
| CA000491023A CA1246174A (en) | 1984-09-26 | 1985-09-18 | Digital transmission system |
| US06/779,639 US4679188A (en) | 1984-09-26 | 1985-09-24 | Digital transmission system |
| KR1019850007099A KR900003238B1 (en) | 1984-09-26 | 1985-09-26 | Digital transmission system |
| EP19850112194 EP0176098B1 (en) | 1984-09-26 | 1985-09-26 | Digital transmission system |
| DE8585112194T DE3582383D1 (en) | 1984-09-26 | 1985-09-26 | DIGITAL TRANSMISSION SYSTEM. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59201021A JPS6178237A (en) | 1984-09-26 | 1984-09-26 | Pull-in system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6178237A true JPS6178237A (en) | 1986-04-21 |
| JPH0416978B2 JPH0416978B2 (en) | 1992-03-25 |
Family
ID=16434145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59201021A Granted JPS6178237A (en) | 1984-09-26 | 1984-09-26 | Pull-in system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6178237A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112004001455B4 (en) * | 2003-08-07 | 2020-04-23 | Intersil Americas LLC | Cross-talk cancellation method and system |
-
1984
- 1984-09-26 JP JP59201021A patent/JPS6178237A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0416978B2 (en) | 1992-03-25 |
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