BRPI0508712A - método e sistema para fornecer acesso a conteúdo de forma seletiva - Google Patents

método e sistema para fornecer acesso a conteúdo de forma seletiva

Info

Publication number
BRPI0508712A
BRPI0508712A BRPI0508712-0A BRPI0508712A BRPI0508712A BR PI0508712 A BRPI0508712 A BR PI0508712A BR PI0508712 A BRPI0508712 A BR PI0508712A BR PI0508712 A BRPI0508712 A BR PI0508712A
Authority
BR
Brazil
Prior art keywords
program
communications network
data stream
content
providing access
Prior art date
Application number
BRPI0508712-0A
Other languages
English (en)
Inventor
Mike Arthur Derrenberger
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 BRPI0508712A publication Critical patent/BRPI0508712A/pt

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
    • H04N21/633—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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G—PHYSICS
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    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00166—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software
    • G11B20/00181—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software using a content identifier, e.g. an international standard recording code [ISRC] or a digital object identifier [DOI]
    • G—PHYSICS
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    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G—PHYSICS
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    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
    • G11B20/00224—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is obtained from a remote server
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    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
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    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption
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    • H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
    • H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
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    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server
    • H04N21/2541—Rights Management
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    • 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
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25808—Management of client data
    • H04N21/25816—Management of client data involving client authentication
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    • 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
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25808—Management of client data
    • H04N21/25833—Management of client data involving client hardware characteristics, e.g. manufacturer, processing or storage capabilities
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    • 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
    • H04N21/26613—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 for generating or managing keys in general
    • H—ELECTRICITY
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    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4135—Peripherals receiving signals from specially adapted client devices external recorder
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    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42684—Client identification by a unique number or address, e.g. serial number, MAC address, socket ID
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    • H04N21/4334—Recording operations
    • H—ELECTRICITY
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    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
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    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream decryption
    • H04N21/44055—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream decryption by partially decrypting, e.g. decrypting a video stream that has been partially encrypted
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    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4627—Rights management associated to the content
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    • 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
    • H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
    • H04N21/6181—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via a mobile phone network
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    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
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    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60—Digital content management, e.g. content distribution
    • H04L2209/603—Digital right managament [DRM]

Abstract

MéTODO E SISTEMA PARA FORNECER ACESSO A CONTEúDO DE FORMA SELETIVA Trata-se de um método de operação de um dispositivo de reprodução de programa digital, incluindo: receber, via uma primeira rede de comunicações, um fluxo de dados incluindo uma parte de dados criptografada que representa um programa; identificar, a partir do fluxo de dados recebido, um identificador associado com o programa; transmitir o identificador de programa e um identificador de dispositivo associado com o dispositivo de reprodução de programa digital para um dispositivo de autorização via uma segunda rede de comunicações; receber, via a segunda rede de comunicações, uma chave de decriptografia em resposta à transmissão; e. decriptografar o fluxo de dados usando a chave de decriptografia, e gerar um sinal de saída para reprodução do programa.
BRPI0508712-0A 2004-03-18 2005-03-17 método e sistema para fornecer acesso a conteúdo de forma seletiva BRPI0508712A (pt)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US55422004P 2004-03-18 2004-03-18
US55430204P 2004-03-18 2004-03-18
US55424104P 2004-03-18 2004-03-18
PCT/US2005/009055 WO2005104000A2 (en) 2004-03-18 2005-03-17 Method and system for selectively providing access to content

Publications (1)

Publication Number Publication Date
BRPI0508712A true BRPI0508712A (pt) 2007-08-07

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Family Applications (1)

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BRPI0508712-0A BRPI0508712A (pt) 2004-03-18 2005-03-17 método e sistema para fornecer acesso a conteúdo de forma seletiva

Country Status (5)

Country Link
US (1) US8234217B2 (pt)
EP (1) EP1733552A2 (pt)
JP (1) JP2007529968A (pt)
BR (1) BRPI0508712A (pt)
WO (1) WO2005104000A2 (pt)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8082572B1 (en) 2000-06-08 2011-12-20 The Directv Group, Inc. Method and apparatus for transmitting, receiving, and utilizing audio/visual signals and other information
US8140859B1 (en) 2000-07-21 2012-03-20 The Directv Group, Inc. Secure storage and replay of media programs using a hard-paired receiver and storage device
US8732232B2 (en) * 2001-05-16 2014-05-20 Facebook, Inc. Proximity synchronizing audio playback device
US7890661B2 (en) 2001-05-16 2011-02-15 Aol Inc. Proximity synchronizing audio gateway device
US7620363B2 (en) 2001-05-16 2009-11-17 Aol Llc Proximity synchronization of audio content among multiple playback and storage devices
US7409562B2 (en) * 2001-09-21 2008-08-05 The Directv Group, Inc. Method and apparatus for encrypting media programs for later purchase and viewing
KR100641218B1 (ko) * 2004-11-19 2006-11-02 엘지전자 주식회사 지상파 디지털 멀티미디어 방송을 위한 수신제한 방송시스템 및 방법
US9325944B2 (en) * 2005-08-11 2016-04-26 The Directv Group, Inc. Secure delivery of program content via a removable storage medium
FR2892222A1 (fr) * 2005-10-17 2007-04-20 Thomson Licensing Sa Methode de gravure, de mise a disposition et de distribution securisee de donnees numeriques, dispositif d'acces et graveur.
US8073380B2 (en) 2005-12-30 2011-12-06 Nokia Corporation Media content delivery and recording over broadcast network
US8775319B2 (en) 2006-05-15 2014-07-08 The Directv Group, Inc. Secure content transfer systems and methods to operate the same
US10536670B2 (en) 2007-04-25 2020-01-14 David Chaum Video copy prevention systems with interaction and compression
US8578506B2 (en) * 2008-10-06 2013-11-05 Telefonaktiebolaget Lm Ericsson (Publ) Digital rights management in user-controlled environment
US8972496B2 (en) 2008-12-10 2015-03-03 Amazon Technologies, Inc. Content sharing
US8812959B2 (en) * 2009-06-30 2014-08-19 International Business Machines Corporation Method and system for delivering digital content
US9203816B2 (en) * 2009-09-04 2015-12-01 Echostar Technologies L.L.C. Controlling access to copies of media content by a client device
JP2011081764A (ja) * 2009-09-14 2011-04-21 Panasonic Corp コンテンツ受信機、コンテンツ再生機、コンテンツ再生システム、コンテンツ書き出し方法、視聴期限判定方法、プログラム、および記録媒体
US20110110516A1 (en) * 2009-11-06 2011-05-12 Kensuke Satoh Content receiver, content reproducer, management server, content use system, content use method, method of write-out from content receiver, method of possible viewing time management on content reproducer, method of time limit fixation in management server, and program
WO2011097010A1 (en) * 2010-02-03 2011-08-11 Thomson Licensing Valid replacement data in encoded video
US8887290B1 (en) * 2010-10-18 2014-11-11 Libredigital, Inc. Method and system for content protection for a browser based content viewer
US20130006869A1 (en) 2011-06-30 2013-01-03 Rovi Corp. Method to identify consumer electronics products
US8799647B2 (en) 2011-08-31 2014-08-05 Sonic Ip, Inc. Systems and methods for application identification
KR101907934B1 (ko) * 2012-02-16 2018-10-15 삼성전자주식회사 전자 장치에서 컨텐츠를 재생하기 위한 장치 및 방법
WO2014026199A1 (en) * 2012-08-10 2014-02-13 Chipp'd Ltd. System for providing multiple levels of authentication before delivering private content to client devices
CN103873243B (zh) * 2012-12-12 2018-06-15 腾讯科技（北京）有限公司 实现数据安全传输的方法、系统、服务器和终端
US9323916B1 (en) * 2013-02-14 2016-04-26 Google Inc. Secure authorization for accessing content on a shareable device
CN103491383A (zh) * 2013-09-06 2014-01-01 天脉聚源(北京)传媒科技有限公司 一种获取视频的方法和装置
US9338502B2 (en) * 2013-12-16 2016-05-10 Bart P. E. van Coppenolle Method and system for collaborative recording and compression
US9301011B2 (en) * 2014-01-13 2016-03-29 Bart P. E. van Coppenolle Collaborative recording compression technology used in CVRs
US9338406B2 (en) * 2014-01-21 2016-05-10 Bart P.E. van Coppenolle Method and system for collaborative recording and compression
US9917690B2 (en) * 2015-10-01 2018-03-13 Time Warner Cable Enterprises Llc Encryption management, content recording management, and playback management in a network environment
US10757474B2 (en) 2018-04-27 2020-08-25 Twentieth Century Fox Home Entertainment Llc Method and apparatus for protecting data via application of corrupting function and complimentary restitution at video processing endpoints
US10965551B2 (en) * 2018-11-21 2021-03-30 Microsoft Technology Licensing, Llc Secure count in cloud computing networks

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0823315A (ja) 1994-07-08 1996-01-23 Sony Corp 情報提供システム
JPH08190345A (ja) 1995-01-11 1996-07-23 Nippon Telegr & Teleph Corp <Ntt> 情報の暗号化および復号化システム
JP4273535B2 (ja) 1998-05-12 2009-06-03 ソニー株式会社 データ伝送制御方法、データ伝送システム、データ受信装置及びデータ送信装置
KR100735503B1 (ko) * 1999-08-27 2007-07-06 소니 가부시끼 가이샤 정보 송신 시스템, 장치 및 방법 및 정보 수신 시스템,장치 및 방법
JP2001103047A (ja) 1999-09-30 2001-04-13 Pfu Ltd コンテンツ配布装置および記録媒体
GB0012791D0 (en) 2000-05-25 2000-07-19 Breakertech Inc Mobile node-lock
AU2001286411A1 (en) * 2000-08-03 2002-02-18 Itech Group, Inc. Method and system for encrypting and storing content to a user
TW552808B (en) * 2001-02-12 2003-09-11 World Theatre Inc Video distribution system
JP2002344440A (ja) 2001-05-21 2002-11-29 Toshiba Corp データ再生装置、データ再生方法、データ再生プログラム、およびビデオ・オン・デマンド・システム
JP2005523502A (ja) 2002-04-18 2005-08-04 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 条件付きアクセスシステムにおけるコンテンツのテスト
KR101015319B1 (ko) * 2002-09-05 2011-02-16 파나소닉 주식회사 그룹형성 관리시스템, 그룹관리 디바이스 및 기록매체

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