DE4432282A1 - Video-on-demand system using return channels in ATM network - Google Patents
Video-on-demand system using return channels in ATM networkInfo
- Publication number
- DE4432282A1 DE4432282A1 DE4432282A DE4432282A DE4432282A1 DE 4432282 A1 DE4432282 A1 DE 4432282A1 DE 4432282 A DE4432282 A DE 4432282A DE 4432282 A DE4432282 A DE 4432282A DE 4432282 A1 DE4432282 A1 DE 4432282A1
- Authority
- DE
- Germany
- Prior art keywords
- subscriber
- channels
- return channel
- atm
- data stream
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
- H04L49/3081—ATM peripheral units, e.g. policing, insertion or extraction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0478—Provisions for broadband connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5603—Access techniques
- H04L2012/5609—Topology
- H04L2012/561—Star, e.g. cross-connect, concentrator, subscriber group equipment, remote electronics
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5614—User Network Interface
- H04L2012/5615—Network termination, e.g. NT1, NT2, PBX
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5638—Services, e.g. multimedia, GOS, QOS
- H04L2012/564—Connection-oriented
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft ein insbesondere für Multimediadienste, einschließlich eines Video-on-Demand-Dienstes, geeignetes System nach dem Oberbegriff des Anspruchs 1, eine dafür geeignete Teilnehmereinrichtung nach dem Oberbegriff von Anspruch 2, eine Zentrale nach dem Oberbegriff von Anspruch 3 und ein Verfahren zur Durchführung solcher Dienste nach dem Oberbegriff von Anspruch 4.The invention relates in particular to multimedia services, including a video on demand service, suitable system according to the preamble of claim 1, a suitable one Subscriber device according to the preamble of claim 2, a Central according to the preamble of claim 3 and a method for Implementation of such services according to the preamble of claim 4.
Bekannt sind hierfür Verteilnetze mit breitbandigen Hin-Kanälen zu Teilnehmern und schmalbandigen Rückkanälen zur Zentrale.Distribution networks with broadband outbound channels are known for this Participants and narrow-band return channels to the headquarters.
Es ist bekannt, solche Verteilnetze als gemeinsames Übertragungsmedium für verschiedene Dienste zu verwenden. Um die Dienste leicht voneinander trennen zu können, werden dabei oft verschiedene Frequenzkanäle verwendet, die völlig unabhängig voneinander sind. Grundlage ist dabei oft ein Fernsehverteilnetz, bei dem schon einige Frequenzkanäle mit frei zugänglichen Fernsehprogrammen belegt sind. In Zukunft werden immer mehr Fernsehprogramme nur bei Bedarf gesendet werden. Dies ist als Video on Demand im Gespräch. Hierfür sind zwingend Datenreduktionen erforderlich, weshalb nur digitale Verfahren als Endzustand angestrebt werden. Sowohl die Speicherung wie auch die Übertragung soll deshalb mittels der ATM-Technik (ATM = Asynchronous Transfer Mode) in Form von ATM-Zellen erfolgen.It is known to have such distribution networks as a common one Use transmission medium for various services. To the Being able to easily separate services from one another is often a problem different frequency channels used that are completely independent are from each other. The basis is often a television distribution network, where already some frequency channels with freely accessible TV programs are occupied. In the future there will be more and more TV programs can only be broadcast when needed. This is as a video Talking on Demand. Data reductions are mandatory for this required, which is why only digital processes as the final state be aimed for. Both storage and transmission should therefore use ATM technology (ATM = Asynchronous Transfer Mode) in the form of ATM cells.
Deshalb ist es erforderlich, auch die von den Teilnehmern in deren Rückkanälen kommenden Anforderungs- und sonstigen Signalisierdaten in ein ATM-Netz einzuführen.It is therefore necessary to include the information provided by the participants in their Return channels coming request and other signaling data to introduce into an ATM network.
Dies erfolgt erfindungsgemäß nach der Lehre der Ansprüche 1 bis 4.According to the invention, this is done according to the teaching of claims 1 to 4.
Der Grundgedanke dabei ist, daß der Teilnehmer seine Nachrichten bereits in Form von ATM-Zellen erzeugt und diese transparent in einem ihm allein (zumindest für die Zeit der Signalisierung) zugeordneten Rückkanal überträgt.The basic idea here is that the subscriber gets his messages already generated in the form of ATM cells and these transparent in one to him alone (at least for the time of signaling) assigned assigned return channel.
Weiter Ausgestaltungen sind den Unteransprüchen zu entnehmen.Further configurations can be found in the subclaims.
In dem in den Fig. 1 bis 6 näher dargestellten Beispiel wird in jeder rückkanalfähigen Teilnehmereinrichtung (andere sind möglich, aber nicht gezeigt) ein ATM-Zellstrom mit 64 kbit/s gebildet, einem Träger aufmoduliert, über ein gemeinsames Verteilnetz zur Zentrale übertragen, dort demoduliert, zwischengespeichert und mit ATM-Zellströmen anderer Teilnehmer zu einem ATM-Zellstrom üblicher Kapazität zusammengemultiplext.In the example shown in FIGS . 1 to 6 in more detail, an ATM cell stream with 64 kbit / s is formed in each return-channel-capable subscriber device (others are possible, but not shown), modulated onto a carrier, transmitted to the central office via a common distribution network, there demodulated, buffered and multiplexed together with other participants' ATM cell streams to form an ATM cell stream of usual capacity.
Als Zentrale soll hier nicht unbedingt diejenige Einrichtung angesehen werden, die letztlich die verschiedenen Dienste zur Verfügung stellt, sondern diejenige Einrichtung, die letztlich den Übergang zum Teilnehmerbereich bildet. Auch als Teilnehmereinrichtung ist im Beispiel eine Einrichtung gezeigt, die mehreren Teilnehmern gemeinsam ist.The central institution is not necessarily the one here are viewed, which ultimately the various services for Provides, but the institution that ultimately the Transition to the participant area. Also as In the example, a subscriber facility shows a facility that is common to several participants.
Im vorliegenden Beispiel sind die schmalbandigen Rückkanäle zu einem TDMA-System üblicher Art zusammengefaßt (TDMA = Time Division Multiple Access). Der Inhalt eines einzelnen Zeitschlitzes dieses Systems ist aber ein Strom von ATM-Zellen. In the present example, the narrow-band return channels are one TDMA system of the usual type summarized (TDMA = Time Division Multiple access). The content of a single time slot this Systems is a stream of ATM cells.
Es ist möglich, weitere Zeitschlitze, d. h. weitere schmalbandige Kanäle, bei Bedarf demselben Teilnehmer für andere Zwecke, z. B. Bildfernsprechen zuzuweisen. Es ist auch möglich, in einem anderen Frequenzkanal ein weiteres TDMA-System mit schmalbandigen Hinkanälen einzurichten.It is possible to add more time slots, i. H. more narrowband Channels, if necessary, the same subscriber for other purposes, e.g. B. Assign telephony to the picture. It is also possible in another Frequency channel another TDMA system with narrowband add-on channels to set up.
Claims (14)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4432282A DE4432282A1 (en) | 1994-09-09 | 1994-09-09 | Video-on-demand system using return channels in ATM network |
NZ272808A NZ272808A (en) | 1994-09-09 | 1995-08-18 | Video on demand: subscriber narrowband backward channels combined in tdm |
AT95113824T ATE230548T1 (en) | 1994-09-09 | 1995-09-02 | SYSTEM, SUBSCRIBER FACILITY, CENTER AND METHOD FOR VIDEO-ON-DEMAND SERVICE |
DE59510518T DE59510518D1 (en) | 1994-09-09 | 1995-09-02 | System, subscriber facility, center and method for video-on-demand service |
EP95113824A EP0701384B1 (en) | 1994-09-09 | 1995-09-02 | System, subscriber equipment, central and method for video on demand |
AU30428/95A AU699920B2 (en) | 1994-09-09 | 1995-09-04 | Video-on-demand service using ATM cells |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4432282A DE4432282A1 (en) | 1994-09-09 | 1994-09-09 | Video-on-demand system using return channels in ATM network |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4432282A1 true DE4432282A1 (en) | 1996-03-14 |
Family
ID=6527908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4432282A Withdrawn DE4432282A1 (en) | 1994-09-09 | 1994-09-09 | Video-on-demand system using return channels in ATM network |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU699920B2 (en) |
DE (1) | DE4432282A1 (en) |
NZ (1) | NZ272808A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19647764A1 (en) * | 1996-11-19 | 1998-05-20 | Bosch Gmbh Robert | Method for bidirectional data transmission |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997009827A1 (en) * | 1995-09-07 | 1997-03-13 | Nec Australia Pty. Ltd. | A distribution system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3418618A1 (en) * | 1984-02-16 | 1985-08-22 | Siemens AG, 1000 Berlin und 8000 München | Information retrieval system |
EP0355697A2 (en) * | 1988-08-19 | 1990-02-28 | Hitachi, Ltd. | Multimedia bidirectional broadcast system |
DE4142812A1 (en) * | 1991-12-23 | 1993-06-24 | Heyo Dr Ing Habil Mennenga | Text information transmission procedure via HF bandwidth channels - using standard TV or radio channel when not being utilised for transmission of programme information |
DE4142550A1 (en) * | 1991-12-21 | 1993-06-24 | Philips Patentverwaltung | Video conference system with central coupling bay - has central studio controlling coupling bay for transmission and reception of multiplex signals contg. video and audio information |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5247347A (en) * | 1991-09-27 | 1993-09-21 | Bell Atlantic Network Services, Inc. | Pstn architecture for video-on-demand services |
-
1994
- 1994-09-09 DE DE4432282A patent/DE4432282A1/en not_active Withdrawn
-
1995
- 1995-08-18 NZ NZ272808A patent/NZ272808A/en unknown
- 1995-09-04 AU AU30428/95A patent/AU699920B2/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3418618A1 (en) * | 1984-02-16 | 1985-08-22 | Siemens AG, 1000 Berlin und 8000 München | Information retrieval system |
EP0355697A2 (en) * | 1988-08-19 | 1990-02-28 | Hitachi, Ltd. | Multimedia bidirectional broadcast system |
DE4142550A1 (en) * | 1991-12-21 | 1993-06-24 | Philips Patentverwaltung | Video conference system with central coupling bay - has central studio controlling coupling bay for transmission and reception of multiplex signals contg. video and audio information |
DE4142812A1 (en) * | 1991-12-23 | 1993-06-24 | Heyo Dr Ing Habil Mennenga | Text information transmission procedure via HF bandwidth channels - using standard TV or radio channel when not being utilised for transmission of programme information |
Non-Patent Citations (2)
Title |
---|
FROHBERG,Wolfgang * |
u.a.: ATM-Einführung in öffent-lichen Netzen. In: Nachrichtentech., Elektron., n¶e¶Science, Berlin 44, 1994, 1, S.5-10 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19647764A1 (en) * | 1996-11-19 | 1998-05-20 | Bosch Gmbh Robert | Method for bidirectional data transmission |
Also Published As
Publication number | Publication date |
---|---|
AU3042895A (en) | 1996-03-21 |
AU699920B2 (en) | 1998-12-17 |
NZ272808A (en) | 1997-02-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |