WO2002082755A1 - Procede et appareil de transfert de paquets de donnees dans des reseaux de communication - Google Patents

Procede et appareil de transfert de paquets de donnees dans des reseaux de communication Download PDF

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Publication number
WO2002082755A1
WO2002082755A1 PCT/SE2002/000590 SE0200590W WO02082755A1 WO 2002082755 A1 WO2002082755 A1 WO 2002082755A1 SE 0200590 W SE0200590 W SE 0200590W WO 02082755 A1 WO02082755 A1 WO 02082755A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
coding
format
received
state
Prior art date
Application number
PCT/SE2002/000590
Other languages
English (en)
Inventor
Jan Berglund
Peter Lindeberg
Original Assignee
Reddo Networks Ab
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 SE0101193A external-priority patent/SE0101193D0/xx
Application filed by Reddo Networks Ab filed Critical Reddo Networks Ab
Priority to EP02718728A priority Critical patent/EP1391091A1/fr
Priority to JP2002580586A priority patent/JP4043952B2/ja
Priority to KR10-2003-7013042A priority patent/KR20040014483A/ko
Priority to CA002443079A priority patent/CA2443079A1/fr
Publication of WO2002082755A1 publication Critical patent/WO2002082755A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
    • H04N21/64707—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless for transferring content from a first network to a second network, e.g. between IP and wireless
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/75—Media network packet handling
    • H04L65/765—Media network packet handling intermediate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80—Responding to QoS
    • 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

Definitions

  • Fig. 5 illustrates an encoding procedure according to the invention for the intermediate data stream 208 comprising the intermediate data units IF1, IF2, IF3... from the previous decoding operation 204.
  • the intermediate data is received and may be arranged into new intermediate data segments SI, S2 , S3... 500, if necessary, to be encoded into the second format F' .
  • the size of the new intermediate data segments 500 is in this example different from the size of the intermediate data units 300 coming from the decoding operation 204.
  • Each new intermediate data segment or unit 500 is then encoded 206 into a new data unit 506 of the second format F' based on a current encoding state ES 502 extracted from a previous encoding operation.
  • An encoding state comprises variables or parameters, apart from the actual data, extracted from the performed encoding operation and which is used for encoding data.

Abstract

L'invention concerne un procédé et un transcodeur permettant de transcoder des données communiquées entre un émetteur (100) et un récepteur (102). Des unités de données (202, 208) contenant des informations dans un premier format (F, IF) sont reçues et codées en de nouvelles unités de données (208, 210) dans un deuxième format (IF, F'), basé sur un état de codage courant (302, 502, 706) extrait du précédent codage de données. Un nouvel état de codage courant est extrait chaque fois qu'une unité de données (202, 500, 700) est codée. Si une unité de données reçue est dans un ordre de séquence erroné, l'état de codage courant est sauvegardé et un nouveau pseudo-état de codage (DS2', ES2', CS2') est extrait pour le codage de la prochaine unité de données reçue. Eventuellement, les données manquantes reçues (F2, S4) sont codées dans le deuxième format (IF, F') basé sur l'état de codage sauvegardé, et peuvent ensuite être utilisées comme données valides. Cela permet de réduire les délais et de rendre superflus les tampons de gigue, tout en conservant une haute qualité.
PCT/SE2002/000590 2001-04-03 2002-03-25 Procede et appareil de transfert de paquets de donnees dans des reseaux de communication WO2002082755A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP02718728A EP1391091A1 (fr) 2001-04-03 2002-03-25 Procede et appareil de transfert de paquets de donnees dans des reseaux de communication
JP2002580586A JP4043952B2 (ja) 2001-04-03 2002-03-25 通信ネットワークにおけるデータパケット転送方法及び装置
KR10-2003-7013042A KR20040014483A (ko) 2001-04-03 2002-03-25 통신 네트워크에서 데이터 패킷을 전송하는 방법 및 장치
CA002443079A CA2443079A1 (fr) 2001-04-03 2002-03-25 Procede et appareil de transfert de paquets de donnees dans des reseaux de communication

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE0101193-1 2001-04-03
SE0101193A SE0101193D0 (sv) 2001-04-03 2001-04-03 A method to compensate for desordered media packets in packet-to-pacet based media transcoder system
SE0102667A SE523417C2 (sv) 2001-04-03 2001-08-07 En metod och apparat för att överföra datapaket i kommunikationsnätverk
SE0102667.3 2001-08-07

Publications (1)

Publication Number Publication Date
WO2002082755A1 true WO2002082755A1 (fr) 2002-10-17

Family

ID=26655434

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2002/000590 WO2002082755A1 (fr) 2001-04-03 2002-03-25 Procede et appareil de transfert de paquets de donnees dans des reseaux de communication

Country Status (6)

Country Link
EP (1) EP1391091A1 (fr)
JP (1) JP4043952B2 (fr)
KR (1) KR20040014483A (fr)
CA (1) CA2443079A1 (fr)
SE (1) SE523417C2 (fr)
WO (1) WO2002082755A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006066632A1 (fr) * 2004-12-24 2006-06-29 Telecom Italia S.P.A. Transcodage media dans des services de distribution multimedia

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027681A1 (fr) * 1996-01-26 1997-07-31 Motorola Inc. Codeur auto-initialise et procede correspondant
EP1137226A2 (fr) * 2000-03-22 2001-09-26 Texas Instruments Incorporated Planificateur des paquets amélioré pour des informations en temps réel sur un réseau par paquets

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027681A1 (fr) * 1996-01-26 1997-07-31 Motorola Inc. Codeur auto-initialise et procede correspondant
EP1137226A2 (fr) * 2000-03-22 2001-09-26 Texas Instruments Incorporated Planificateur des paquets amélioré pour des informations en temps réel sur un réseau par paquets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006066632A1 (fr) * 2004-12-24 2006-06-29 Telecom Italia S.P.A. Transcodage media dans des services de distribution multimedia
US7991908B2 (en) 2004-12-24 2011-08-02 Telecom Italia S.P.A. Media transcoding in multimedia delivery services

Also Published As

Publication number Publication date
SE0102667D0 (sv) 2001-08-07
EP1391091A1 (fr) 2004-02-25
JP2004530357A (ja) 2004-09-30
KR20040014483A (ko) 2004-02-14
JP4043952B2 (ja) 2008-02-06
SE523417C2 (sv) 2004-04-20
SE0102667L (sv) 2002-10-04
CA2443079A1 (fr) 2002-10-17

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