DK152319B - PROCEDURE FOR INTEGRATING A SERVICES LINE IN THE FIELD TRANSFER - Google Patents

PROCEDURE FOR INTEGRATING A SERVICES LINE IN THE FIELD TRANSFER Download PDF

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Publication number
DK152319B
DK152319B DK072382A DK72382A DK152319B DK 152319 B DK152319 B DK 152319B DK 072382 A DK072382 A DK 072382A DK 72382 A DK72382 A DK 72382A DK 152319 B DK152319 B DK 152319B
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DK
Denmark
Prior art keywords
data stream
bit rate
data flow
low bit
main data
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DK072382A
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Danish (da)
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DK72382A (en
DK152319C (en
Inventor
Juergen Feldmann
Manfred Rocks
Original Assignee
Siemens Ag
Standard Elektrik Lorenz Ag
Aeg Telefunken Ag
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Publication of DK72382A publication Critical patent/DK72382A/en
Publication of DK152319B publication Critical patent/DK152319B/en
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Publication of DK152319C publication Critical patent/DK152319C/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • 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
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/04—Channels characterised by the type of signal the signals being represented by different amplitudes or polarities, e.g. quadriplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2210/00—Indexing scheme relating to optical transmission systems
    • H04B2210/07—Monitoring an optical transmission system using a supervisory signal
    • H04B2210/074—Monitoring an optical transmission system using a supervisory signal using a superposed, over-modulated signal

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  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)
  • Telephonic Communication Services (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Communication Control (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Road Signs Or Road Markings (AREA)
  • Meter Arrangements (AREA)

Abstract

1. A method of integrating a binary clock-pulse-driven or non-clock-pulse-driven data flow (B) of low bit rate (e.g. a service conductor data flow), which preferably serves for the transmission of data commands and control commands and measured values, into a main data flow (H) of high bit rate with two radiation power levels, which is conducted via a light waveguide transmission link without metallic auxiliary wires, where the data flow (D) of low bit rate is combined with the main data flow (H) in a drive electronic unit (5) at the transmitting end to form a transmission data flow (U) with three radiation power levels, where at the receiving end a decision device - which responds to the first two levels - for the main data flow (H) and a second decision device - which responds only to the third level - for the data flow (D) having the low bit rate are driven in parallel, characterised in that the combination of main data flow (H) and low rate data flow (D) is carried out in the drive electronic unit (5) for the transmitter (1) by changing the supply voltage of the drive electronic unit (5) in the timing of the low bit rate data flow (D) and that here the main data flow does not contain long zero sequences.

Description

DK 152319BDK 152319B

Opfindelsen angår en fremgangsmåde til integration af en datastrøm i lyslederoverføringsstrækninger ifølge krav 1's indledning.The invention relates to a method for integrating a data stream into fiber-optic transmission lines according to the preamble of claim 1.

Under montage eller ved fejlsøgning er det nødven-5 digt at koble tjenesteledningsstrækninger over det kabel, der skal installeres eller allerede forefindes. I tilfælde af overføringsstrækninger, der er ført over kabler med metalliske korer, kan tjenesteledningsstrækningen føres over disse metalliske korer. Ved overføringer over 10 lyslederkabler uden metallisk bipak udgår denne mulighed imidlertid.During assembly or troubleshooting, it is necessary to connect service lines over the cable to be installed or already present. In the case of transmission lines passed over cables with metallic cores, the service line section can be passed over these metallic cores. However, for transfers over 10 fiber-optic cables without a metallic bypass, this option is eliminated.

Derfor udlægges der i mange tilfælde et separat kabel med metalliske korer, over hvilket tjenesteledningsstrækningen da føres. Denne fremgangsmåde er imid-15 lertid tidskrævende og bekostelig.Therefore, in many cases a separate cable with metallic cores is laid over which the service line section is then routed. However, this process is time consuming and costly.

I tysk fremlæggelsesskrift nr. 29 13 924 beskrives et kabelfjernsynssystem, som uden noget stort opbud, navnlig uden yderligere kabler, skaber mulighed for overføring af yderligere lavfrekvente infomationer. I mod-20 sætning til fremgangsmåden ifølge opfindelsen bliver den yderligere information imidlertid ikke fast knyttet til hovedinformationen med henblik på overføring. Derimod afledes der fra hovedinfomationen en hjælpefrekvens specielt til overføring af den yderligere infomation.German publication no. 29 13 924 describes a cable television system which, without any large supply, especially without additional cables, allows for the transmission of additional low frequency information. However, in contrast to the method of the invention, the additional information is not firmly linked to the main information for transmission. On the other hand, an auxiliary frequency is derived from the main infomation especially for the transmission of the additional infomation.

25 Desuden er det imidlertid en ulempe ved opfindel sen ifølge tysk fremlæggelsesskrift nr. 29 13 924, at der til overføringen af denne yderligere infomation kræves en ledig overføringskanal.25 However, it is a disadvantage of the invention according to German Patent Specification No. 29 13 924 that a free transmission channel is required for the transmission of this additional information.

Den til grund for opfindelsen liggende opgave, 30 over overføringsstrækninger, som er ført over lyslederkabler uden metallisk bipak, samtidigt at kunne medoverføre en datastrøm (f.eks. en tjenesteledningsdatastrøm), løses med den i krav 1 karakteriserede opfindelse.The object of the invention, over transmission lines passed over fiber-optic cables without a metallic by-pass, at the same time being able to transmit a data stream (eg a service line data stream), is solved by the invention according to claim 1.

Fra JP-A-56,, 13 850 kendes et system til. overføring 35 af digitale signaler, ved hvilket en datastrøm med lav bithastighed kombineres ..med en hoveddatastrøm med forholdsmæssig høj bithastighed med to strålingseffekt- 2 •'-4*From JP-A-56, 13 850 a system is known. transmission of digital signals by which a low bit rate data stream is combined .. with a relatively high bit rate master data stream with two radiation effects.

DK 152319BDK 152319B

niveauer. Overføringsdatastrømmen med tre strålingseffektniveauer bliver over en lyslederoverføringsstrækning uden metalliske bipakkorer ført til modtagesiden. På modtagesiden findes foruden en på de første to niveauer 5 reagerende bedømmer for hoveddatastrømmen en yderligere bedømmer, som kun reagerer på det tredje niveau, for den yderligere datastrøm.levels. The transmission data stream with three radiation power levels is passed to the receiving side over a fiber-optic transmission line without metallic by-packets. On the receiving side, in addition to a second-level 5 responding reviewer for the main data stream, there is an additional third-level responding reviewer for the additional data stream.

Fordelagtige videreudviklinger af opfindelsen er beskrevet i underkravene.Advantageous further developments of the invention are described in the subclaims.

10 Den med opfindelsen opnåelige fordel består navn lig i, at det ved tjenesteledningsstrækninger, som er ført over lyslederkabler uden metallisk bipak, ikke er nødvendigt at udlægge et separat kabel med metalliske korer. Alle kanaler i et overføringssystem forbliver ^ uændret forbeholdt den offentlige trafik, og alligevel er tjenesteledningsstrækningerne integreret. Derved undgås unødige omkostninger.In particular, the advantage of the invention lies in the fact that in service line lines passed over fiber-optic cables without metallic by-pass, it is not necessary to lay out a separate cable with metallic cores. All channels in a transmission system remain unchanged for public traffic, and yet the service line sections are integrated. This avoids unnecessary costs.

Det er endvidere fordelagtigt, at der ved anvendelse af fremgangsmåden ifølge opfindelsen i PCM-syste- 2 0 mer intet ændres ved CCITT-rammestrukturerne for PCM- multipleksdriften af hoveddatastrømmen. Desuden er det fordelagtigt, at en ifølge opfindelsen tilvejebragt tjenesteledningsstrækning, som ikke behøves, ved hjælp af yderligere kendte apparater kan benyttes til en auto-25 matisk strækningsovervågning.It is further advantageous that, using the method of the invention in PCM systems, nothing is changed by the CCITT framework structures for the PCM multiplex operation of the main data stream. In addition, it is advantageous that a service line extension provided which is not needed according to the invention can be used by means of further known apparatus for automatic stretch monitoring.

Opfindelsen er i det følgende forklaret nærmere på grundlag af et udførelseseksempel under henvisning til tegningen, hvor fig. 1 viser et blokdiagram med impulsdiagram, og fig. 2 kodnings- og afkodningstabeller.The invention is explained in more detail on the basis of an exemplary embodiment with reference to the drawing, in which fig. 1 is a block diagram with pulse diagram; and FIG. 2 coding and decoding tables.

Fig. la viser et blokdiagram over et udførelseseksempel ifølge opfindelsen, og fig. Ib viser de tilsvarende tilhørende impulsdiagrammer ved "return to zero" (RZ). Opfindelsen er imidlertid også anvendelig, ^ hvis der arbejdes med "non return to zero" (NRZ).FIG. 1a shows a block diagram of an embodiment of the invention, and fig. Ib shows the corresponding associated pulse diagrams at "return to zero" (RZ). However, the invention is also applicable if non-return to zero (NRZ) is employed.

DK 152319BDK 152319B

33

En sender 1 aktiveres af en med to indgange forsynet elektronisk styrekobling 5. I denne sker sammenfatningen af en hoveddatastrøm H og en datastrøm DA transmitter 1 is activated by a two-input electronic control coupler 5. In this the summary of a main data stream H and a data stream D

♦· til en overføringsdatastrøm U. Sammenfatningen sker 5 ifølge opfindelsen således, at overføringsdatastrømmen ir's impulser antager et yderligere (f.eks. et tredje) strålingseffektniveau, hvis der samtidigt optræder impulser i begge datastrømme (i den elektriske del er det elektriske niveauer, og i den optiske del er det strå- 1 0 lingseffektniveauer).♦ · to a transmission data stream U. The summary is made according to the invention so that the transmission data stream ir's pulses assume an additional (e.g., a third) radiation power level if pulses occur in both data streams at the same time (the electrical part is the electrical levels, and in the optical part there are radiation power levels).

Hertil er den elektroniske styrekobling 5 udrustet med en anden indgang 4 for datastrømmen D.For this, the electronic control coupling 5 is equipped with a second input 4 for the data stream D.

En mulig måde at sammenfatte hoveddatastrømmen H og datastrømmen D på består ifølge opfindelsen i, at ^ fødespændingen til den elektroniske styrekobling 5 eller til en dertil hensigtsmæssig del af koblingen forøges i takt med datastrømmen D. Derved opnås det, at der altid, når der optræder en impuls i hoveddatastrømmen H, og der samtidigt på den elektroniske styrekob- 2 Ω ling 5's indgang 4 optræder en impuls i datastrømmen D, sker en ændring af den førstnævnte impuls' spændingsniveau (det bliver som regel forøget). "L"-im-pulser i datastrømmen D kan altså kun overføres, hvis der i hoveddatastrømmen H optræder "L"-impulser, der 25 ved hjælp af datastrømmen D ændres med hensyn til deres spændingsniveauer. Dette fremgår af kodningstabellen (fig. 2a). Denne overførbarhed foreligger imidlertid altid ved anvendelse af MBNB-koder for hoveddatastrømmen H, idet denne som følge af den højere bit-30 hastighed er væsentlig mere højfrekvent end datastrømmen D. Også ved anvendelse af en scrambler er en længere nulfølge ligeledes med største sandsynlighed udelukket.One possible way of summarizing the main data stream H and the data stream D according to the invention is that the supply voltage to the electronic control coupler 5 or to a suitable part of the coupling is increased in step with the data stream D. an impulse in the main data stream H, and at the same time on the input 4 of the electronic control coupling 5 an impulse occurs in the data stream D, a change in the voltage level of the first impulse (it is usually increased). Thus, "L" pulses in the data stream D can only be transmitted if "L" pulses appear in the main data stream H, which are changed by means of the data stream D with respect to their voltage levels. This is shown in the coding table (Fig. 2a). However, this transmissibility always exists when using MBNB codes for the main data stream H, which, because of the higher bit rate, is considerably more high-frequency than the data stream D. Also, using a scrambler, a longer zero sequence is also most likely excluded.

Den i den elektroniske styrekobling 5 frem- ·· bragte overføringsdatastrøm U bliver i senderen 1 35 omsat til en følge af tilsvarende strålingsimpulser medThe transmission data stream U generated in the electronic control circuit 5 is transmitted in the transmitter 1 35 as a result of corresponding radiation pulses with

... DK 152319B... DK 152319B

4 forskellige effektniveauer og afgivet til lyslederkablet.4 different power levels and delivered to the fiber optic cable.

På modtagesiden bliver overføringsdatastrømmen U af en modtager 6 afgivet parallelt til en første bedømmer 2 for hoveddatastrømmen H og til en anden be-5 dømmer 3 for datastrømmen D.On the receiving side, the transmission data stream U is delivered by a receiver 6 parallel to a first appraiser 2 for the main data stream H and to a second appraiser 3 for the data stream D.

Den første bedømmer 2 for hoveddatastrømmen H leverer altid et "L" (fig. 2b), hvis den absolutte værdi af et første spændingsniveau på modtageren 6's udgang afviger med en bestemt værdi fra nul (niveau 1), og så-10 ledes overskrider bedømmelsestærsklen; dette er uafhængigt af, om der på den elektroniske styrekobling 5 kun foreligger et signal fra hoveddatastrømmen H (niveau 1), eller om der yderligere foreligger et signal fra datastrømmen D (niveau 2).The first assessor 2 for the main data stream H always supplies an "L" (Fig. 2b) if the absolute value of a first voltage level at the output of the receiver 6 deviates with a certain value from zero (level 1), and so 10 exceeds the rating threshold. ; this is independent of whether there is only a signal from the main data stream H (level 1) on the electronic control circuit 5 or whether there is a further signal from the data stream D (level 2).

15 Den anden bedømmer 3 for datastrømmen D leve rer altid et "L", når på udgangen af modtageren 6 den absolutte værdi af det andet spændingsniveau er forskellig fra nul og absolut er større end den absolutte værdi af det første spændingsniveau og overskrider den til-20 svarende bedømmelsestærskel i bedømmeren 3. Længden af de af den anden bedømmer 3 for datastrømmen D afgivne impulser svarer omtrentligt til længden af hoveddatastrømmen H's impulser. Længden af datastrømmen D's impulser er imidlertid som følge af den meget rin-25 gere bithastighed meget større end længden af hoveddatastrømmen H's impulser. De af den anden bedømmer 3 afgivne impulser skal således forlænges til den oprindelige længde af datastrømmen D's impulser. Dette opnås ved hjælp af en monostabil multivibrator 7, som er 30 indkoblet efter den anden bedømmer 3. Yderligere under denne impulsforlængelse indtræffende tærskeloverskridelser med det højeste niveau 2 i fig. 2b udløser ikke ustabile tilstande af den monostabile multivibrator 7.The second evaluator 3 of the data stream D always supplies an "L" when at the output of the receiver 6 the absolute value of the second voltage level is different from zero and is absolutely greater than the absolute value of the first voltage level and exceeds the 20 corresponding rating threshold in the assessor 3. The length of the pulses delivered by the second assessor 3 for the data stream D corresponds approximately to the length of the main data stream H's pulses. However, due to the much slower bit rate, the length of the data stream D's pulses is much greater than the length of the main data stream H's pulses. Thus, the pulses delivered by the second assessor 3 must be extended to the original length of the pulses D of the data stream. This is achieved by means of a monostable multivibrator 7, which is switched on after the second assessor 3. Furthermore, during this impulse extension threshold thresholds with the highest level 2 in FIG. 2b does not trigger unstable states of the monostable multivibrator 7.

Som følge af de meget længere impulser i data-Due to the much longer impulses in the data,

OCOC

strømmen D er deres nøjagtige begyndelse ikke sa vig-the current D is their exact beginning not so important

Claims (3)

15 PATENTKRAV15 PATENT REQUIREMENTS 1. Fremgangsmåde til integration af en fortrinsvis til overføring af data- og styrekommandoer samt måleværdier osv. tjenende binært taktet eller utaktet datastrøm (D) med lav bithastighed (f.eks. en tjeneste-20 ledningsdatastrøm) i en hoveddatastrøm (H) med høj bithastighed med to strålingseffektniveauer, som føres over en lysbølgelederoverføringsstrækning uden metalliske bi-pakkorer, med en sammenfatning af datastrømmen (D) med lav bithastighed i en elektronisk styrekobling (5) på 25 sendesiden med hoveddatastrømmen (H) til en overføringsdatastrøm (ϋ) med tre strålingseffektniveauer, hvorhos der på modtagesiden sker parallel aktivering af en bedømmer for hoveddatastrømmen (H), som reagerer på de første to niveauer, og af en anden bedømmer for data-50 strømmen (D) med lav bithastighed, som kun reagerer på det tredje niveau, kendetegnet ved, at sammenfatningen af hoveddatastrømmen (H) og datastrømmen (D) med lav bithastighed i den elektroniske styrekobling (5) for senderen (1) sker ved ændring af den elektroniske 35 styrekoblings (5) forsyningsspænding i takten for data- : DK 152319B e strømmen (D) med lav bithastighed, og at hoveddatastrømmen ikke har længere nulfølger.A method of integrating a preferably for transmitting data and control commands as well as measurement values, etc. serving binary clocked or out-of-bit data stream (D) at low bit rate (e.g., a service line data stream) into a main data stream (H) bit rate with two radiation power levels passed over a light waveguide transmission line without metallic by-packers, with a summary of the low bit rate data stream (D) in an electronic control coupler (5) of the transmitter side main data stream (H) with a transmission data stream (ϋ) radiation power levels where, on the receiving side, parallel activation of a main data stream analyzer (H) responding to the first two levels and a second low bit rate data stream analyzer (D) responding only to the third level , characterized in that the summary of the main data stream (H) and the low bit rate data stream (D) in the electronic control coupling (5) of the transmitter (1) is carried out at changing the supply voltage (5) of the electronic control coupler (5) at the rate of low bit rate current (D) of the current data stream (D) and that the main data stream no longer has zero sequences. 2. Fremgangsmåde ifølge krav 1, kendete g- n e t ved, at ved overføring af hoveddatastrømmen i et 5 PCM-system tjener de i hoveddatastrømmen indeholdte rammekendingsord til fastlæggelse af begyndelsen og afslutningen af ordene i datastrømmen (D) med lav bithastighed .A method according to claim 1, characterized in that, when transmitting the main data stream in a PCM system, the frame recognition words contained in the main data stream serve to determine the beginning and end of the words in the low bit rate data stream (D). 3. Fremgangsmåde ifølge krav 1, kendete g-n e t ved, at et bestemt antal ord i datastrømmen (D) med lav bithastighed suppleres med et yderligere rammekendingsord.The method according to claim 1, characterized in that a certain number of words in the low bit rate data stream (D) is supplemented by a further frame recognition word.
DK072382A 1981-02-20 1982-02-19 PROCEDURE FOR INTEGRATING A SERVICES LINE IN THE FIELD TRANSFER DK152319C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3106269A DE3106269A1 (en) 1981-02-20 1981-02-20 "METHOD FOR INTEGRATING A SERVICE PATH IN LIGHT-GUIDE TRANSMISSION ROUTES"
DE3106269 1981-02-20

Publications (3)

Publication Number Publication Date
DK72382A DK72382A (en) 1982-08-21
DK152319B true DK152319B (en) 1988-02-15
DK152319C DK152319C (en) 1988-07-18

Family

ID=6125323

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Application Number Title Priority Date Filing Date
DK072382A DK152319C (en) 1981-02-20 1982-02-19 PROCEDURE FOR INTEGRATING A SERVICES LINE IN THE FIELD TRANSFER

Country Status (5)

Country Link
EP (1) EP0059395B1 (en)
AT (1) ATE20163T1 (en)
DE (2) DE3106269A1 (en)
DK (1) DK152319C (en)
NO (1) NO155220C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534428A1 (en) * 1982-10-12 1984-04-13 Cit Alcatel SYSTEM FOR OPERATING AND MAINTAINING EQUIPMENT DISTRIBUTED ALONG A DIGITAL TRANSMISSION LINK
SE432859B (en) * 1982-10-22 1984-04-16 Ericsson Telefon Ab L M PROCEDURE TO TRANSFER AN EXTRA INFORMATION CHANNEL OVER A TRANSMISSION MEDIUM
GB2175480B (en) * 1985-05-21 1988-12-29 Stc Plc Demodulation of auxiliary low frequency channels in digital transmission systems
DE3522130A1 (en) * 1985-06-18 1986-12-18 Krone Gmbh, 1000 Berlin Line equipment for transmitting an additional channel on a data transmission path
DE3525105A1 (en) * 1985-07-13 1987-01-15 Telefonbau & Normalzeit Gmbh Method and circuit arrangement for transmitting information via a transmission path
DE3837288A1 (en) * 1988-11-03 1990-05-10 Rheydt Kabelwerk Ag Multiplex information transmission system
DE19717933A1 (en) 1997-04-29 1998-11-05 Thomson Brandt Gmbh Circuit arrangement with an encoder and an evaluation circuit
DE19815011A1 (en) * 1998-04-03 1999-10-14 Temic Semiconductor Gmbh Process for the transmission of digital transmission signals

Also Published As

Publication number Publication date
NO155220C (en) 1987-02-25
NO155220B (en) 1986-11-17
ATE20163T1 (en) 1986-06-15
DK72382A (en) 1982-08-21
EP0059395B1 (en) 1986-05-28
DE3271302D1 (en) 1986-07-03
DK152319C (en) 1988-07-18
NO820516L (en) 1982-08-23
EP0059395A1 (en) 1982-09-08
DE3106269A1 (en) 1982-10-21

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