DE3229399A1 - Digital time-division multiplex system for transmission and switching tasks - Google Patents

Digital time-division multiplex system for transmission and switching tasks

Info

Publication number
DE3229399A1
DE3229399A1 DE19823229399 DE3229399A DE3229399A1 DE 3229399 A1 DE3229399 A1 DE 3229399A1 DE 19823229399 DE19823229399 DE 19823229399 DE 3229399 A DE3229399 A DE 3229399A DE 3229399 A1 DE3229399 A1 DE 3229399A1
Authority
DE
Germany
Prior art keywords
pcm
column
division multiplex
multiplex system
systems
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
DE19823229399
Other languages
German (de)
Inventor
Helmut 1000 Berlin Kliem
Jens Dr. Weber
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.)
ADC GmbH
Original Assignee
Krone GmbH
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
Priority claimed from DE19823213534 external-priority patent/DE3213534A1/en
Application filed by Krone GmbH filed Critical Krone GmbH
Priority to DE19823229399 priority Critical patent/DE3229399A1/en
Publication of DE3229399A1 publication Critical patent/DE3229399A1/en
Granted legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/04—Distributors combined with modulators or demodulators
    • H04J3/047—Distributors with transistors or integrated circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/07—Synchronising arrangements using pulse stuffing for systems with different or fluctuating information rates or bit rates
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1605—Fixed allocated frame structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
    • H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
    • H04N7/54—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal the signals being synchronous

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Multimedia (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

The subject-matter of the invention is a time frame for transmitting a moving-picture channel of 135.000 Mbit/s and two PCM-30 systems of 64 horizontally arranged rows and 34 vertically arranged columns, a first PCM 30/1 system being transmitted in the even timeslots 0, 2, 4, 6... of the 33rd column and a second PCM 30/2 system being transmitted in the odd timeslots 1, 3, 5, 7... of the 33rd column. The frame alignment word is transmitted in a timeslot, remaining free from the difference between 135.168 Mbit/s and 135.000 Mbit/s, of the time-division multiplex frame in column 0/row 0. <IMAGE>

Description

Digitales Zeitmultiplexsystem für Übertragungs- und Ver-Digital time division multiplex system for transmission and

mittl ungsaufgaben.mean tasks.

Die Erfindung geht von einem Zeitmultiplexsystem mit einer Bittaktfrequenz von 139,264 MHz aus mit dem Wortlaut des Oberbegriffes des Anspruches 1 nach Patentanmeldung 32 13 534 Die Erfindung ist aus der Aufgabe entstanden, in einem zur digitalen Übertragung von Fernsprechkanäl en über digitale Breitbandübertragungskanäle konzipierten PC-Quartärsystem (139, 264 Mbit/s) einen Bewegtbild-Kanal (135,000 Mbit/s), ein Rahmensynchronwort und zwei vollständige PCM 30-Systeme zu übertragen.The invention is based on a time division multiplex system with a bit clock frequency from 139.264 MHz with the wording of the preamble of claim 1 according to patent application 32 13 534 The invention arose out of the task, in one for digital transmission PC quaternary system designed from telephone channels via digital broadband transmission channels (139, 264 Mbit / s) a moving picture channel (135,000 Mbit / s), a frame sync word and to transmit two complete PCM 30 systems.

In der oben genannten Patentanmeldung P 32 13 534 ist es nicht möglich, im Zeitmultiplexrahmen neben dem Bewegtbildkanal mit 135,16;3 Mbit/s zwei PCM 30-Systeme voll unterzubringen, da ein Zeitplatz für das Rahmen-Synchronwort reserviert werden muß.In the above-mentioned patent application P 32 13 534 it is not possible two PCM 30 systems in the time division multiplex in addition to the video channel with 135.16; 3 Mbit / s fully accommodated, since a time slot is reserved for the frame sync word got to.

Die Erfindung löst diese Aufgabe durch die kennzeichnenden Maßnahmen des Anspruches 1.The invention solves this problem through the characterizing measures of claim 1.

Durch die neue Rahmenstruktur werden neben dem Bewegtbild-Kanal zusätzlich zwei PCM 30-Systeme übertragen.The new frame structure means that in addition to the moving image channel, two PCM 30 systems.

Herbei wird vorteilhaft ausgenutzt, daß zur digitalen Bildübertragung nach internationaler Vereinbarung eine Abtastfrequenz für analoge Bildsignale von 13,5 MHz empfohlen ist. Bei einer Zeichenlänge von 10 bit entspricht das einer Kanal-Kapazität von 135 Mbit/s. Bei der Einschachtelung eines 135 Mbit/s-Breitbandkanales in den 135,168 Mbit/s-Breitbandkanal des Zeitmultiplexrahmens obiger Patentanmeldung bleiben 105 bit je Zeitrahmen unbelegt (2,5 Zeitplätze à 40 b; e w 1 Zeitplatz à 10 bit, der abwechselnd belegt oder nicht belegt wird).This makes use of the fact that for digital image transmission according to international agreement a sampling frequency for analog image signals of 13.5 MHz is recommended. With a character length of 10 bits, this corresponds to a channel capacity of 135 Mbit / s. When nesting a 135 Mbit / s broadband channel in the 135.168 Mbit / s broadband channel of the time division multiplex frame of the above patent application remain 105 bits per time frame unoccupied (2.5 time slots à 40 b; e w 1 time slot à 10 bits, which is alternately occupied and not occupied).

Wird einer dieser freibleibenden Zeitplätze mit dem Rahmensynchronwort belegt, so wird gegenüber obiger Patentanmeldung ein zweites PCM 30-System transparent nutzbar.Becomes one of these free time slots with the frame sync word occupied, a second PCM 30 system becomes transparent compared to the above patent application usable.

Vorteilhafte weitere Ausgestaltungen der einzelnen Maßnahmen dieser Erfindung sind in den Unteransprüchen gekennzeichnet.Advantageous further refinements of the individual measures of this Invention are characterized in the subclaims.

Anhand der Zeichnung soll die Erfindung näher beschrieben werden.The invention is to be described in more detail with the aid of the drawing.

Die Fig. 1 zeigt, daß der Zeitrahmen z.B. aus 34 senkrecht angeordneten Spalten und aus 64 waagerecht angeordneten Zeilen bestenen kann.Fig. 1 shows that the time frame is composed of, for example, 34 vertically arranged Columns and 64 horizontally arranged rows.

Da für die Bildubertragung statt 135ß168 Mbit/s - wie gezeigt - nur 135,000 Mbit/s benötigt werden, bleiben durchschnittlich 105 bit im Breitbandkanal unbelegt, das sind 2,5 Zeitplätze a 40 bit + 1 Zeitplatz a 10 bit, der abwechselnd belegt bzw. nicht belegt wird.As for the image transmission instead of 135ß168 Mbit / s - as shown - only 135,000 Mbit / s are required, an average of 105 bits remain in the broadband channel unoccupied, that is 2.5 time slots a 40 bit + 1 time slot a 10 bit, which alternates occupied or not occupied.

Einer dieser freibleibenden Zeitplätze wird mit dem Rahmensynchronwort belegt.One of these free time slots is with the frame sync word proven.

Die Fig.l zeigt, daß in der Spalte O/Zeile Q das Rahmensynchronwort angeordnet ist.The Fig.l shows that in the column O / line Q the frame sync word is arranged.

In der 33. Spalte werden in den geraden Zeilenschlitzen 0, 2, 4, 6... ein erstes PCM 30/1-System und in den ungeraden Zeilenschlitzen 1, 3, 5, 7... ein zweites PCM 30/2-System übertragen.In the 33rd column, 0, 2, 4, 6 ... a first PCM 30/1 system and in the odd line slots 1, 3, 5, 7 ... a second PCM 30/2 system.

Die Positiv-Stopfstellen der PCM 30-/1-und 30/2- Systeme werden in der letzten und vorletzten Bitstelle im Zeitschlitz der Spalte 1/Zeile 0 übertragen.The positive tamping points of the PCM 30/1 and 30/2 systems are in the last and penultimate bit position in the time slot of column 1 / row 0.

Die Negativ-Stopfstellen der beiden PCM 30-Systeme werden jeweils in der ersten Bitstelle ihres Zeitschlitzes in der 33. Spalte übertragen.The negative tamping points of the two PCM 30 systems are each in the first bit position of their time slot in the 33rd column.

Dic Übertragung der Stopfkennungen der PCM 30/1-und PCM 30/2-Systeme findet in Zeile O/Spalte 1 statt.The transfer of the stuffing IDs of the PCM 30/1 and PCM 30/2 systems takes place in row O / column 1.

LeerseiteBlank page

Claims (4)

Patentansprüche: Ü Zeitmultiplexsystem mit einer Bittaktfrequenz von 139,264 MHz für Übertragungs- und Vermittlungsaufgaben in einem integrierten digitalen Breitbandnetz, nach Patentanmeldung 32 13 534, dadurch gekennzeichnet, daß die Rahmenstruktur des digitalen Zeitmultiplexsystems zur Übertragung eines Bewegtbildkanals von 135,000 Mbit s und zweier PCM 30-Systeme aus 64 waagerecht angeordneten Zeilen und aus 34 senkrecht angeordneten Spalten aufgebaut ist, wobei in den geraden Zeilenschlitzen 0, 2, 4, 6... der 33. Spalte ein erstes PCM 30/1-System und in den ungeraden Zeitschlitzen 1, 3, 5, 7... der 33. Spalte ein zweites PC! 30/2-System und wobei ferner das Rahmensynchronwort in e -nem aus der Differenz von 135,168 Mbit/s zu 135,000 Mb-t's frei bleibenden Zeitschlitz in Spalte 0/Zeile 0 übertragen wird. Claims: Time division multiplex system with one bit clock frequency of 139.264 MHz for transmission and switching tasks in one integrated digital broadband network, according to patent application 32 13 534, characterized in that, that the frame structure of the digital time division multiplex system for the transmission of a Moving image channel of 135,000 Mbit s and two PCM 30 systems from 64 horizontally arranged rows and is composed of 34 vertically arranged columns, wherein in the even line slots 0, 2, 4, 6 ... of the 33rd column a first PCM 30/1 system and in the odd time slots 1, 3, 5, 7 ... of the 33rd column a second PC! 30/2 system and furthermore the frame sync word in e -nem from the difference from 135.168 Mbit / s to 135,000 Mb-t's remaining free time slot in column 0 / row 0 is transmitted. 2.2. Zeitmultiplexsystem nach Anspruch 1, dadurch gekennzeichnet, daß die Positiv-Stopfstellen der PCM 30/1-und PCM 30/2-Systeme die vorletzte und letzte Bitstelle im Zeitscnlitz der Spalte 1/Zeile 0 belegen.Time division multiplex system according to Claim 1, characterized in that the Positive tamping points of the PCM 30/1 and PCM 30/2 systems are the penultimate and last Occupy bit position in the time slot of column 1 / line 0. 3.3. Zeitmultiplexsystem nach Anspruch 1, dadurch gekennzeichnet, daß die Negativ-Stopfstellen der PCM 30/1-und PCM-30/2-Systeme jeweils die erste Bitstelle ihres Zeitschlitzes in der 33. Spalte belegen.Time division multiplex system according to Claim 1, characterized in that the Negative stuffing positions of the PCM 30/1 and PCM 30/2 systems each have the first bit position occupy their time slot in the 33rd column. 4.4th Zeitmultiplexsystem nach Anspruch 1, dadurch gekennzeichnet, daß die Stopfkennungen der PCM 30/1-und PCM 30/2-Systeme in Zeile 0,Spalte 1 übertragen werden.Time division multiplex system according to Claim 1, characterized in that the Transfer the stuffing IDs of the PCM 30/1 and PCM 30/2 systems in row 0, column 1 will.
DE19823229399 1982-04-10 1982-08-06 Digital time-division multiplex system for transmission and switching tasks Granted DE3229399A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823229399 DE3229399A1 (en) 1982-04-10 1982-08-06 Digital time-division multiplex system for transmission and switching tasks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823213534 DE3213534A1 (en) 1982-04-10 1982-04-10 Digital time division multiplex system for transmission and switching tasks
DE19823229399 DE3229399A1 (en) 1982-04-10 1982-08-06 Digital time-division multiplex system for transmission and switching tasks

Publications (1)

Publication Number Publication Date
DE3229399A1 true DE3229399A1 (en) 1984-02-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0210611A1 (en) * 1985-07-31 1987-02-04 Siemens Aktiengesellschaft Method for combining a digital picture signal and three digital narrow-band signals into one 139264-kbit/s signal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3213534C2 (en) * 1982-04-10 1987-10-22 Krone Ag, 1000 Berlin, De

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3213534C2 (en) * 1982-04-10 1987-10-22 Krone Ag, 1000 Berlin, De

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FUßGÄNGER, Kurt, HALLER, Ulrich, MATT, Hans Jürgen, OHNSORGE, Horst: Experimentalsystem für ein integriertes Kommunikationsnetz mit optischen Kanälen, In: Frequenz 32, 1978, H.6, 165-170 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0210611A1 (en) * 1985-07-31 1987-02-04 Siemens Aktiengesellschaft Method for combining a digital picture signal and three digital narrow-band signals into one 139264-kbit/s signal
US4750172A (en) * 1985-07-31 1988-06-07 Siemens Aktiengesellschaft Method for combining a digital video signal and three digital narrow band signals to form a 139,264 kbit/s signal

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