CA2625710A1 - Procede de reception de trames d'un flux numerique - Google Patents

Procede de reception de trames d'un flux numerique Download PDF

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Publication number
CA2625710A1
CA2625710A1 CA002625710A CA2625710A CA2625710A1 CA 2625710 A1 CA2625710 A1 CA 2625710A1 CA 002625710 A CA002625710 A CA 002625710A CA 2625710 A CA2625710 A CA 2625710A CA 2625710 A1 CA2625710 A1 CA 2625710A1
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Canada
Prior art keywords
symbols
frame
receiver
field
header
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Granted
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CA002625710A
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English (en)
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CA2625710C (fr
Inventor
Xavier Giraud
Alban Duverdier
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Centre National dEtudes Spatiales CNES
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Individual
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Publication of CA2625710A1 publication Critical patent/CA2625710A1/fr
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Publication of CA2625710C publication Critical patent/CA2625710C/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0602—Systems characterised by the synchronising information used
    • H04J3/0605—Special codes used as synchronising signal
    • H04J3/0608—Detectors therefor, e.g. correlators, state machines
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/242—Synchronization processes, e.g. processing of PCR [Program Clock References]
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4381—Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • 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 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6143—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a satellite
    • 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
    • H04N21/643—Communication protocols
    • H04N21/64315—DVB-H
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite

Abstract

L'invention concerne un procédé de réception d'un flux numérique, le flux comprenant des trames (1) présentant chacune un corps (Sl, Pl, S2, P2, S3) ayant un nombre variable de (c) symboles et précédé d'un entête (C, I) ayant (d) symboles, un champ (I) composé d'un nombre fixe de e symboles inconnus du récepteur et définissant (c). Une phase d'accrochage comprend les étapes suivantes : a) recevoir une suite de (e) symboles du flux; b) pour des couples de symboles reçus, effectuer un calcul de corrélation, cette corrélation étant supposée vérifier une relation prédéfinie si les e symboles forment le champ inconnu ; c) déterminer un niveau de corrélation et déterminer si les e symboles forment le champ inconnu en fonction de ce niveau de corrélation ; d) répéter les étapes a), b) et c) jusqu'à déterminer que les e symboles forment le champ inconnu.
CA2625710A 2005-10-14 2006-10-13 Procede de reception de trames d'un flux numerique Active CA2625710C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0510523 2005-10-14
FR0510523A FR2892245B1 (fr) 2005-10-14 2005-10-14 Procede de reception de trames d'un flux numerique
PCT/FR2006/002313 WO2007042685A1 (fr) 2005-10-14 2006-10-13 Procede de reception de trames d'un flux numerique

Publications (2)

Publication Number Publication Date
CA2625710A1 true CA2625710A1 (fr) 2007-04-19
CA2625710C CA2625710C (fr) 2013-04-16

Family

ID=36090835

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2625710A Active CA2625710C (fr) 2005-10-14 2006-10-13 Procede de reception de trames d'un flux numerique

Country Status (5)

Country Link
US (1) US8180010B2 (fr)
EP (1) EP1946557A1 (fr)
CA (1) CA2625710C (fr)
FR (1) FR2892245B1 (fr)
WO (1) WO2007042685A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2917958B1 (fr) * 2007-06-29 2009-09-11 Seb Sa Article culinaire emaille anti-rayures et procede de fabrication d'un tel article.
EP2061167A3 (fr) * 2007-11-19 2013-07-31 Gilat Satellite Networks, Ltd. Évaluation de canal pour la télédiffusion numérique par satellite (DVB-S2)
FR2934591B1 (fr) * 2008-07-29 2011-02-11 Seb Sa Article comprenant un revetement ceramique et procede de fabrication d'un tel article mettant en oeuvre un laser.
FR2935246B1 (fr) * 2008-08-29 2010-09-03 Seb Sa Article culinaire comportant un revetement antiadhesif a proprietes ameliorees d'anti-adherence
FR2937236B1 (fr) * 2008-10-16 2010-11-26 Seb Sa Article culinaire comportant un revetement antiadhesif presentant des proprietes ameliorees d'adherence au support
FR2937235B1 (fr) * 2008-10-16 2010-11-12 Seb Sa Articule culinaire comportant un revetement antiadhesif presentant des proprietes ameliorees d'adherence au support
CN102217263B (zh) * 2008-11-17 2015-06-03 汤姆森特许公司 有线电视信号的前向纠错帧头设计
US8995533B2 (en) 2008-12-10 2015-03-31 Thomson Licensing Method and apparatus for transmitting and receiving FEC frame headers with variable header modulation
US8532227B2 (en) 2009-06-29 2013-09-10 Thomson Licensing Method and apparatus for robust and high efficiency FEC frame header recovery
CN105744300B (zh) * 2013-01-29 2018-07-24 上海数字电视国家工程研究中心有限公司 数字信号传输系统及方法

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US3663793A (en) * 1971-03-30 1972-05-16 Westinghouse Electric Corp Method of decorating a glazed article utilizing a beam of corpuscular energy
DE3539047C2 (de) 1984-12-27 1994-06-01 Bayer Ag Verfahren zum Dekorieren oder Markieren von Gegenständen mit emaillierten Oberflächen mittels Laserstrahl
FR2576038B1 (fr) 1985-01-11 1987-03-20 Seb Sa Revetement d'email applique sur un support metallique, et ustensile culinaire comportant ce revetement
GB2194879A (en) 1986-09-01 1988-03-23 Meyer Manuf Co Ltd Cooking pans
FR2622600A1 (fr) 1987-10-30 1989-05-05 Sitram Ste Indle Transf Metaux Composition d'emaillage, procede de revetement d'une tole par une sous-couche d'accrochage d'un ptfe et article culinaire obtenu
FR2625494B1 (fr) 1987-12-30 1992-10-16 Seb Sa Revetement d'email charge de billes de verre pour fond d'ustensiles de cuisson et ustensiles ainsi revetus
ES2011604T3 (es) 1987-12-30 1993-11-16 Seb S.A. Revestimiento de esmalte cargado de bolas de vidrio para fondo de utensilios de coccion y utensilios asi revestidos.
JPH0694200B2 (ja) * 1988-10-04 1994-11-24 フジマル工業株式会社 アルミニウム面の被覆方法
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FR2882240B1 (fr) 2005-10-05 2007-11-30 Seb Sa Article emaille comprenant un revetement compatible avec un mode de chauffage par induction et son procede de fabrication
CA2581474A1 (fr) 2006-03-14 2007-09-14 Cerasol Hong Kong Limited Composition de revetement de ceramique non adhesive et procede
FR2917958B1 (fr) * 2007-06-29 2009-09-11 Seb Sa Article culinaire emaille anti-rayures et procede de fabrication d'un tel article.
FR2934591B1 (fr) * 2008-07-29 2011-02-11 Seb Sa Article comprenant un revetement ceramique et procede de fabrication d'un tel article mettant en oeuvre un laser.
FR2935246B1 (fr) * 2008-08-29 2010-09-03 Seb Sa Article culinaire comportant un revetement antiadhesif a proprietes ameliorees d'anti-adherence
FR2937236B1 (fr) * 2008-10-16 2010-11-26 Seb Sa Article culinaire comportant un revetement antiadhesif presentant des proprietes ameliorees d'adherence au support
FR2937235B1 (fr) * 2008-10-16 2010-11-12 Seb Sa Articule culinaire comportant un revetement antiadhesif presentant des proprietes ameliorees d'adherence au support

Also Published As

Publication number Publication date
CA2625710C (fr) 2013-04-16
EP1946557A1 (fr) 2008-07-23
FR2892245B1 (fr) 2008-04-04
WO2007042685B1 (fr) 2007-06-21
FR2892245A1 (fr) 2007-04-20
WO2007042685A1 (fr) 2007-04-19
US20090161788A1 (en) 2009-06-25
US8180010B2 (en) 2012-05-15

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