BRPI0718817A2 - Método e dispositivo para gerenciar uma transmissão de chaves. - Google Patents

Método e dispositivo para gerenciar uma transmissão de chaves. Download PDF

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Publication number
BRPI0718817A2
BRPI0718817A2 BRPI0718817-0A BRPI0718817A BRPI0718817A2 BR PI0718817 A2 BRPI0718817 A2 BR PI0718817A2 BR PI0718817 A BRPI0718817 A BR PI0718817A BR PI0718817 A2 BRPI0718817 A2 BR PI0718817A2
Authority
BR
Brazil
Prior art keywords
key
scalability
complementary
level
quality
Prior art date
Application number
BRPI0718817-0A
Other languages
English (en)
Portuguese (pt)
Inventor
Mohamed Karroumi
Stephane Onno
Alain Durand
Original Assignee
Thomson Licensing
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
Application filed by Thomson Licensing filed Critical Thomson Licensing
Publication of BRPI0718817A2 publication Critical patent/BRPI0718817A2/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/165—Centralised control of user terminal ; Registering at central
    • 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
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234327—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into layers, e.g. base layer and one or more enhancement layers
    • 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
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
    • 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
    • H04N21/25—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, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
    • 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
    • H04N21/44—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 encoded video stream scene graphs
    • H04N21/4405—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 encoded video stream scene graphs involving video stream decryption
    • 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
    • H04N21/633—Control signals issued by server directed to the network components or client
    • H04N21/6332—Control signals issued by server directed to the network components or client directed to client
    • H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
    • H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
BRPI0718817-0A 2006-11-09 2007-11-06 Método e dispositivo para gerenciar uma transmissão de chaves. BRPI0718817A2 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06301141A EP1921858A1 (en) 2006-11-09 2006-11-09 Method and device for managing a transmission of keys
EP06301141.5 2006-11-09
PCT/EP2007/061934 WO2008055900A1 (en) 2006-11-09 2007-11-06 Method and device for managing a transmission of keys

Publications (1)

Publication Number Publication Date
BRPI0718817A2 true BRPI0718817A2 (pt) 2013-12-03

Family

ID=37846258

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0718817-0A BRPI0718817A2 (pt) 2006-11-09 2007-11-06 Método e dispositivo para gerenciar uma transmissão de chaves.

Country Status (7)

Country Link
US (1) US8265271B2 (enExample)
EP (2) EP1921858A1 (enExample)
JP (1) JP5437073B2 (enExample)
KR (1) KR101398942B1 (enExample)
CN (1) CN101536514B (enExample)
BR (1) BRPI0718817A2 (enExample)
WO (1) WO2008055900A1 (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090187957A1 (en) * 2008-01-17 2009-07-23 Gokhan Avkarogullari Delivery of Media Assets Having a Multi-Part Media File Format to Media Presentation Devices
US8509434B2 (en) * 2008-06-20 2013-08-13 Korean Broadcasting System Method and apparatus for protecting scalable video coding contents
EP2146504A1 (en) * 2008-07-18 2010-01-20 Thomson Licensing, Inc. Method and device for key generation
US8165292B2 (en) * 2008-10-14 2012-04-24 Nagra France Method and system for secure distribution of audiovisual data encapsulated according to a plurality of transport protocols
KR20110071707A (ko) * 2009-12-21 2011-06-29 삼성전자주식회사 동영상 컨텐트 제공 방법 및 그 장치, 동영상 컨텐트 재생 방법 및 그 장치
US8687902B2 (en) * 2012-03-29 2014-04-01 Intel Corporation System, method, and computer program product for decompression of block compressed images
CN107005423B (zh) * 2014-10-20 2020-11-03 Oppo广东移动通信有限公司 网络节点提供、无线装置接收广播多播服务的方法及装置
DE102017109423A1 (de) * 2017-05-03 2018-11-08 Osram Gmbh Verschlüsselung von Baken
CN111953676B (zh) * 2020-08-10 2022-07-15 四川阵风科技有限公司 一种基于硬件设备等级的文件加密方法
CN119135345B (zh) * 2024-09-11 2025-05-23 矩阵时光数字科技有限公司 一种针对大流量数据中心的密钥补充方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5870470A (en) * 1996-02-20 1999-02-09 International Business Machines Corporation Method and apparatus for encrypting long blocks using a short-block encryption procedure
US7197142B2 (en) * 2001-08-24 2007-03-27 Alten Alexander I System and methods for a vernam stream cipher
US7406176B2 (en) * 2003-04-01 2008-07-29 Microsoft Corporation Fully scalable encryption for scalable multimedia
US7313814B2 (en) * 2003-04-01 2007-12-25 Microsoft Corporation Scalable, error resilient DRM for scalable media
US7797454B2 (en) * 2004-02-13 2010-09-14 Hewlett-Packard Development Company, L.P. Media data transcoding devices
US7756271B2 (en) * 2004-06-15 2010-07-13 Microsoft Corporation Scalable layered access control for multimedia
CN101375284B (zh) * 2004-10-25 2012-02-22 安全第一公司 安全数据分析方法和系统
US7522724B2 (en) * 2005-01-07 2009-04-21 Hewlett-Packard Development Company, L.P. System and method of transmission of generalized scalable bit-streams
US7698555B2 (en) * 2005-08-29 2010-04-13 Schweitzer Engineering Laboratories, Inc. System and method for enabling secure access to a program of a headless server device

Also Published As

Publication number Publication date
EP1921858A1 (en) 2008-05-14
KR101398942B1 (ko) 2014-05-27
JP5437073B2 (ja) 2014-03-12
KR20090098789A (ko) 2009-09-17
EP2090102B1 (en) 2017-01-11
CN101536514A (zh) 2009-09-16
CN101536514B (zh) 2013-05-15
JP2010509820A (ja) 2010-03-25
EP2090102A1 (en) 2009-08-19
US8265271B2 (en) 2012-09-11
US20100128873A1 (en) 2010-05-27
WO2008055900A1 (en) 2008-05-15

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Legal Events

Date Code Title Description
B15K Others concerning applications: alteration of classification

Ipc: H04N 7/16 (2011.01)

B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06T Formal requirements before examination [chapter 6.20 patent gazette]
B15K Others concerning applications: alteration of classification

Free format text: A CLASSIFICACAO ANTERIOR ERA: H04N 7/16

Ipc: H04N 7/16 (1968.09), H04N 21/2343 (2011.01), H04N

B25G Requested change of headquarter approved

Owner name: THOMSON LICENSING (FR)

B25G Requested change of headquarter approved

Owner name: THOMSON LICENSING (FR)

B25A Requested transfer of rights approved

Owner name: INTERDIGITAL VC HOLDINGS, INC. (US)

B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL