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1. (WO2019025189) METHOD FOR THE PLAYBACK OF A DIGITAL MULTIMEDIA STREAM WITH QUICK ACCESS TO THE CONTENT IN THE CLEAR AND DEVICE FOR THE USE THEREOF
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Pub. No.: WO/2019/025189 International Application No.: PCT/EP2018/069525
Publication Date: 07.02.2019 International Filing Date: 18.07.2018
IPC:
H04N 21/2343 (2011.01) ,H04N 21/262 (2011.01) ,H04N 21/61 (2011.01) ,H04N 21/854 (2011.01) ,H04N 21/8549 (2011.01) ,H04N 21/858 (2011.01) ,H04N 21/433 (2011.01) ,H04N 21/438 (2011.01) ,H04N 21/4405 (2011.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
20
Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23
Processing of content or additional data; Elementary server operations; Server middleware
234
Processing of video elementary streams, e.g. splicing of video streams or manipulating MPEG-4 scene graphs
2343
involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
20
Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
25
Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication or learning user preferences for recommending movies
262
Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission or generating play-lists
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
60
Network structure or processes for video distribution between server and client or between remote clients; Control signaling between clients, server and network components; Transmission of management data between server and client; Communication details between server and client
61
Network physical structure; Signal processing
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
80
Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
85
Assembly of content; Generation of multimedia applications
854
Content authoring
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
80
Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
85
Assembly of content; Generation of multimedia applications
854
Content authoring
8549
Creating video summaries, e.g. movie trailer
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
80
Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
85
Assembly of content; Generation of multimedia applications
858
Linking data to content, e.g. by linking an URL to a video object or by creating a hotspot
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
40
Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB [set-top-box]; Operations thereof
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 synchronizing decoder's clock; Client middleware
433
Content storage operation, e.g. storage operation in response to a pause request or caching operations
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
40
Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB [set-top-box]; Operations thereof
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 synchronizing decoder's clock; Client middleware
438
Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
21
Selective content distribution, e.g. interactive television, VOD [Video On Demand]
40
Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB [set-top-box]; Operations thereof
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 synchronizing decoder's clock; Client middleware
44
Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to MPEG-4 scene graphs
4405
involving video stream decryption
Applicants:
SAGEMCOM BROADBAND SAS [FR/FR]; 250, route de l'empereur 92500 RUEIL MALMAISON, FR
Inventors:
SIMONIN, Sébastien; FR
Agent:
CABINET CAMUS LEBKIRI; Olivier CAMUS 25, rue de maubeuge 75009 PARIS, FR
LEBKIRI, Alexandre; FR
Priority Data:
175742802.08.2017FR
Title (EN) METHOD FOR THE PLAYBACK OF A DIGITAL MULTIMEDIA STREAM WITH QUICK ACCESS TO THE CONTENT IN THE CLEAR AND DEVICE FOR THE USE THEREOF
(FR) PROCEDE DE LECTURE D'UN FLUX MULTIMEDIA CHIFFRE AVEC ACCES RAPIDE AU CONTENU EN CLAIR ET DISPOSITIF D'UTILISATION
Abstract:
(EN) Method for the playback of an encrypted multimedia stream, by means of a receiving terminal, with fast access to the content in the clear, characterised in that the multimedia stream is broadcast according to an adaptive broadcasting protocol, the multimedia stream is described by a manifest comprising several sections, each section corresponding to different physical features, the playback of the stream being initialised by simultaneously implementing the following steps: - downloading segments corresponding to a start-up section; - initiating a process of acquiring a decryption key; - downloading adapted segments according to the adaptive protocol; - processing the start-up section segments to obtain the decryption key, obtaining the decryption key: - terminating the processing of the start-up section segments, - processing the adapted segments.
(FR) Procédé de lecture, par un terminal récepteur, d'un flux multimédia chiffré avec accès rapide au contenu en clair caractérisé en ce que, le flux multimédia étant diffusé selon un protocole de diffusion adaptatif, le flux multimédia est décrit par un manifeste comportant plusieurs sections chaque section correspondant à des caractéristiques physiques différentes, l'initialisation de la lecture du flux se fait en mettant en œuvre, en parallèle, des étapes suivantes : - Téléchargement de segments correspondant à une section de démarrage; - Démarrage d'un processus d'acquisition d'une clé de déchiffrement; - Téléchargement de segments adaptés selon le protocole adaptatif; - Traitement des segments de la section de démarrage jusqu'à l'obtention de la clé de déchiffrement, à l'obtention de la clé de déchiffrement : - Arrêt du traitement des segments de la section de démarrage, - Traitement des segments adaptés.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)