JP2009545229A - コンテンツを安全に配信する方法、装置およびシステム - Google Patents

コンテンツを安全に配信する方法、装置およびシステム Download PDF

Info

Publication number
JP2009545229A
JP2009545229A JP2009521733A JP2009521733A JP2009545229A JP 2009545229 A JP2009545229 A JP 2009545229A JP 2009521733 A JP2009521733 A JP 2009521733A JP 2009521733 A JP2009521733 A JP 2009521733A JP 2009545229 A JP2009545229 A JP 2009545229A
Authority
JP
Japan
Prior art keywords
key
content
encrypted
decrypted
stb
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP2009521733A
Other languages
English (en)
Japanese (ja)
Other versions
JP2009545229A5 (enExample
Inventor
ブルーム，ジエフリー，アダム
ラマズワミイ，クマー
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thomson Licensing SAS
Original Assignee
Thomson Licensing SAS
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 SAS filed Critical Thomson Licensing SAS
Publication of JP2009545229A publication Critical patent/JP2009545229A/ja
Publication of JP2009545229A5 publication Critical patent/JP2009545229A5/ja
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—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
    • 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]
    • H04N21/40—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
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
    • 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]
    • H04N21/40—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
    • H04N21/4408—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 encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
    • 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
    • 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
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • H04N21/8358—Generation of protective data, e.g. certificates involving watermark
    • 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
    • H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Storage Device Security (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
JP2009521733A 2006-07-24 2006-12-13 コンテンツを安全に配信する方法、装置およびシステム Pending JP2009545229A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83283006P 2006-07-24 2006-07-24
PCT/US2006/047634 WO2008013562A1 (en) 2006-07-24 2006-12-13 Method, apparatus and system for secure distribution of content

Publications (2)

Publication Number Publication Date
JP2009545229A true JP2009545229A (ja) 2009-12-17
JP2009545229A5 JP2009545229A5 (enExample) 2010-02-12

Family

ID=38127556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009521733A Pending JP2009545229A (ja) 2006-07-24 2006-12-13 コンテンツを安全に配信する方法、装置およびシステム

Country Status (7)

Country Link
US (1) US8627482B2 (enExample)
EP (1) EP2044765A1 (enExample)
JP (1) JP2009545229A (enExample)
KR (1) KR101321971B1 (enExample)
CN (1) CN101491078B (enExample)
BR (1) BRPI0621945A2 (enExample)
WO (1) WO2008013562A1 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012231466A (ja) * 2011-04-05 2012-11-22 Apple Inc 電子的アクセスクライアントを記憶する装置及び方法
JP2016522612A (ja) * 2013-04-26 2016-07-28 ナグラビジョン エス アー メディアコンテンツに透かしに入れる方法及びこの方法を実施するシステム

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8312267B2 (en) 2004-07-20 2012-11-13 Time Warner Cable Inc. Technique for securely communicating programming content
US8266429B2 (en) 2004-07-20 2012-09-11 Time Warner Cable, Inc. Technique for securely communicating and storing programming material in a trusted domain
US8520850B2 (en) 2006-10-20 2013-08-27 Time Warner Cable Enterprises Llc Downloadable security and protection methods and apparatus
US8621540B2 (en) 2007-01-24 2013-12-31 Time Warner Cable Enterprises Llc Apparatus and methods for provisioning in a download-enabled system
US8761402B2 (en) * 2007-09-28 2014-06-24 Sandisk Technologies Inc. System and methods for digital content distribution
US8380993B2 (en) * 2007-12-07 2013-02-19 Broadcom Corporation Method and system for robust watermark insertion and extraction for digital set-top boxes
EP2180419A1 (en) * 2008-10-23 2010-04-28 ST Wireless SA Method of storing data in a memory device and a processing device for processing such data
US9083685B2 (en) * 2009-06-04 2015-07-14 Sandisk Technologies Inc. Method and system for content replication control
US9602864B2 (en) 2009-06-08 2017-03-21 Time Warner Cable Enterprises Llc Media bridge apparatus and methods
US9866609B2 (en) 2009-06-08 2018-01-09 Time Warner Cable Enterprises Llc Methods and apparatus for premises content distribution
US10621518B2 (en) 2009-07-10 2020-04-14 Disney Enterprises, Inc. Interoperable keychest
US8763156B2 (en) * 2009-07-10 2014-06-24 Disney Enterprises, Inc. Digital receipt for use with an interoperable keychest
EP2273409A3 (en) * 2009-07-10 2013-01-16 Disney Enterprises, Inc. Interoperable keychest
US8755526B2 (en) * 2009-07-10 2014-06-17 Disney Enterprises, Inc. Universal file packager for use with an interoperable keychest
US8452016B2 (en) * 2009-07-10 2013-05-28 Disney Enterprises, Inc. Interoperable keychest for use by service providers
US9319644B2 (en) * 2009-07-20 2016-04-19 Bce Inc. Automatic user band assignment in a satellite signal distribution environment
CA2688953C (en) * 2009-07-20 2019-04-30 Bce Inc. Improved signal security in a satellite signal distribution environment
WO2011022437A1 (en) * 2009-08-17 2011-02-24 Cram, Inc. Digital content management and delivery
WO2011075811A1 (en) * 2009-12-21 2011-06-30 Bce Inc. Methods and systems for re-securing a compromised channel in a satellite signal distribution environment
FR2958103B1 (fr) * 2010-03-23 2012-08-17 Cryptoexperts Sas Procede pour identifier un dispositif mis en oeuvre par un terminal pirate et dispositif associe
US8611531B2 (en) 2010-04-23 2013-12-17 The Directv Group, Inc. Method and apparatus for remotely inserting watermark into encrypted compressed video bitstream
US8416983B1 (en) * 2010-04-23 2013-04-09 The Directv Group, Inc. Method and apparatus for establishing an accurate low bit time stamp in a remotely created watermark
US9906838B2 (en) 2010-07-12 2018-02-27 Time Warner Cable Enterprises Llc Apparatus and methods for content delivery and message exchange across multiple content delivery networks
KR101424049B1 (ko) 2010-11-29 2014-07-29 주식회사 씨케이앤비 워터마크 생성 방법, 이를 포함하는 방송 콘텐츠 생성 방법 및 워터마크 삽입 시스템
EP2490446A1 (en) * 2011-02-15 2012-08-22 Eldon Technology Limited Copy protection
US9633391B2 (en) 2011-03-30 2017-04-25 Cram Worldwide, Llc Secure pre-loaded drive management at kiosk
US20140245344A1 (en) * 2011-07-05 2014-08-28 Dcs Copy Protection Limited Copy protection system
US9860059B1 (en) * 2011-12-23 2018-01-02 EMC IP Holding Company LLC Distributing token records
JP6066994B2 (ja) * 2012-03-22 2017-01-25 サターン ライセンシング エルエルシーＳａｔｕｒｎ Ｌｉｃｅｎｓｉｎｇ ＬＬＣ 受信装置、受信方法、プログラム、復号処理装置、受信処理システムおよび情報処理装置
US9154832B2 (en) 2012-03-29 2015-10-06 Dish Network L.L.C. Testing frame color counting technique
EP2645729A1 (en) * 2012-03-30 2013-10-02 Nagravision S.A. Security device for Pay-TV receiver/decoder
CN102821093B (zh) * 2012-06-29 2016-03-23 北京牡丹电子集团有限责任公司 一种支持跨终端应用的内容保护授权系统和方法
US8570379B1 (en) 2012-10-04 2013-10-29 Dish Network L.L.C. Frame block comparison
US9565472B2 (en) 2012-12-10 2017-02-07 Time Warner Cable Enterprises Llc Apparatus and methods for content transfer protection
US20140282786A1 (en) 2013-03-12 2014-09-18 Time Warner Cable Enterprises Llc Methods and apparatus for providing and uploading content to personalized network storage
EP2797335A1 (en) * 2013-04-26 2014-10-29 Nagravision S.A. Method to watermark a compressed content encrypted by at least one content key
EP2797334A1 (en) 2013-04-26 2014-10-29 Nagravision S.A. Method and device to embed watermark in uncompressed video data
US9621940B2 (en) 2014-05-29 2017-04-11 Time Warner Cable Enterprises Llc Apparatus and methods for recording, accessing, and delivering packetized content
US20160105400A1 (en) * 2014-10-08 2016-04-14 Time Warner Cable Enterprises Llc Apparatus and methods for data transfer beteween a plurality of user devices
NL1041549B1 (en) * 2015-10-28 2017-05-24 Quiver B V A method, system, server, client and application for sharing digital content between communication devices within an internet network.
US10362069B2 (en) 2015-12-03 2019-07-23 Microsoft Technology Licensing, Llc Protocol fallback
US20170163607A1 (en) * 2015-12-03 2017-06-08 Microsoft Technology Licensing, Llc Establishing a Communication Event Using Secure Signalling
US10193934B2 (en) 2015-12-03 2019-01-29 Microsoft Technology Licensing, Llc Data compression for communications signalling
EP3369206A1 (en) 2015-12-23 2018-09-05 Nagravision S.A. Secure provisioning, by a client device, cryptographic keys for exploiting services provided by an operator
US10176309B2 (en) * 2016-10-28 2019-01-08 Acronis International Gmbh Systems and methods for authenticating video using watermarks
GB2561367A (en) * 2017-04-11 2018-10-17 Sony Corp Receiving audio and/or video content
EP3468164A1 (en) * 2017-10-06 2019-04-10 Nagravision S.A. A method for delivering digital content to at least one client device
CN111510776A (zh) * 2020-05-11 2020-08-07 知安视娱(南京)科技有限公司 水印标识插入与提取的方法及系统
US12047378B2 (en) 2021-10-01 2024-07-23 Disney Enterprises, Inc. Automated content transport security
KR102385328B1 (ko) * 2021-10-14 2022-04-12 엘에스웨어(주) 프록시 재암호화를 통해 데이터 배포 제어가 가능한 drm 시스템 및 방법

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003008566A (ja) * 2001-04-25 2003-01-10 Thomson Licensing Sa 通信ネットワーク内で対称鍵を管理する処理及び、この処理を実行する装置
JP2005513835A (ja) * 2001-12-13 2005-05-12 ディジマーク コーポレイション 可変方向及びプロトコルを伴う法的デジタル透かし
JP2005522902A (ja) * 2002-02-25 2005-07-28 トムソン　ライセンシング　ソシエテ　アノニム 第２領域に属すネットワークで受信された第１領域についての暗号化データを処理するための方法
JP2005210687A (ja) * 2003-12-01 2005-08-04 Sony United Kingdom Ltd 符号化装置及び検出装置
JP2006508563A (ja) * 2002-08-19 2006-03-09 ナグラビジョン エス アー デジタルホームネットワーク用鍵の有効性の確認方法
WO2006062635A1 (en) * 2004-12-07 2006-06-15 Digital Keystone, Inc. Methods and apparatuses for secondary conditional access server
US20060136718A1 (en) * 2004-12-16 2006-06-22 Guy Moreillon Method for transmitting digital data in a local network

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6118873A (en) * 1998-04-24 2000-09-12 International Business Machines Corporation System for encrypting broadcast programs in the presence of compromised receiver devices
US6789188B1 (en) 2000-02-07 2004-09-07 Koninklijke Philips Electronics N.V. Methods and apparatus for secure content distribution
US7426750B2 (en) 2000-02-18 2008-09-16 Verimatrix, Inc. Network-based content distribution system
US6804357B1 (en) * 2000-04-28 2004-10-12 Nokia Corporation Method and system for providing secure subscriber content data
US7003107B2 (en) * 2000-05-23 2006-02-21 Mainstream Encryption Hybrid stream cipher
AU6985601A (en) 2000-06-16 2002-01-02 Mindport Usa Methods and systems to distribute content via a network utilizing distributed conditional access agents and secure agents, and to perform digital rights management (drm)
US7107462B2 (en) 2000-06-16 2006-09-12 Irdeto Access B.V. Method and system to store and distribute encryption keys
US7039803B2 (en) * 2001-01-26 2006-05-02 International Business Machines Corporation Method for broadcast encryption and key revocation of stateless receivers
US7062658B1 (en) * 2001-07-26 2006-06-13 Cisco Technology, Inc Secure digital appliance and method for protecting digital content
US7181620B1 (en) * 2001-11-09 2007-02-20 Cisco Technology, Inc. Method and apparatus providing secure initialization of network devices using a cryptographic key distribution approach
US7242766B1 (en) * 2001-11-21 2007-07-10 Silicon Image, Inc. Method and system for encrypting and decrypting data using an external agent
DE10164131A1 (de) 2001-12-30 2003-07-17 Juergen K Lang Kryptographisches Modul zur Speicherung und Wiedergabe kopier-und nutzungsgeschützter elektronischer Ton- und Bildmedien
US7706540B2 (en) * 2002-12-16 2010-04-27 Entriq, Inc. Content distribution using set of session keys
JP4576853B2 (ja) * 2004-03-05 2010-11-10 ソニー株式会社 情報処理装置、および認証処理方法、並びにコンピュータ・プログラム
KR20080031965A (ko) * 2005-07-20 2008-04-11 베리메트릭스 인코퍼레이티드 네트워크 사용자 인증 시스템 및 방법

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003008566A (ja) * 2001-04-25 2003-01-10 Thomson Licensing Sa 通信ネットワーク内で対称鍵を管理する処理及び、この処理を実行する装置
JP2005513835A (ja) * 2001-12-13 2005-05-12 ディジマーク コーポレイション 可変方向及びプロトコルを伴う法的デジタル透かし
JP2005522902A (ja) * 2002-02-25 2005-07-28 トムソン　ライセンシング　ソシエテ　アノニム 第２領域に属すネットワークで受信された第１領域についての暗号化データを処理するための方法
JP2006508563A (ja) * 2002-08-19 2006-03-09 ナグラビジョン エス アー デジタルホームネットワーク用鍵の有効性の確認方法
JP2005210687A (ja) * 2003-12-01 2005-08-04 Sony United Kingdom Ltd 符号化装置及び検出装置
WO2006062635A1 (en) * 2004-12-07 2006-06-15 Digital Keystone, Inc. Methods and apparatuses for secondary conditional access server
US20060136718A1 (en) * 2004-12-16 2006-06-22 Guy Moreillon Method for transmitting digital data in a local network

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012231466A (ja) * 2011-04-05 2012-11-22 Apple Inc 電子的アクセスクライアントを記憶する装置及び方法
US9009475B2 (en) 2011-04-05 2015-04-14 Apple Inc. Apparatus and methods for storing electronic access clients
US9332012B2 (en) 2011-04-05 2016-05-03 Apple Inc. Apparatus and methods for storing electronic access clients
US9686076B2 (en) 2011-04-05 2017-06-20 Apple Inc. Apparatus and methods for storing electronic access clients
JP2016522612A (ja) * 2013-04-26 2016-07-28 ナグラビジョン エス アー メディアコンテンツに透かしに入れる方法及びこの方法を実施するシステム

Also Published As

Publication number Publication date
EP2044765A1 (en) 2009-04-08
US8627482B2 (en) 2014-01-07
CN101491078B (zh) 2012-08-08
KR20090031747A (ko) 2009-03-27
WO2008013562A1 (en) 2008-01-31
CN101491078A (zh) 2009-07-22
KR101321971B1 (ko) 2013-10-28
US20090290711A1 (en) 2009-11-26
BRPI0621945A2 (pt) 2011-10-18

Similar Documents

Publication Publication Date Title
KR101321971B1 (ko) 콘텐츠의 안전한 배포를 위한 방법, 장치 및 시스템
KR100459147B1 (ko) 안전한 디지털 미디어 및 콘텐츠 배포를 위한 워터마크시스템
US7506376B2 (en) Copy protection method for digital media
US10691830B2 (en) Systems and methods for preserving privacy in distribution of digital content using private tokens
KR102206142B1 (ko) 미디어 콘텐츠를 워터마킹하기 위한 방법 및 그 방법을 구현하기 위한 시스템
US20080267411A1 (en) Method and Apparatus for Enhancing Security of a Device
WO2009031082A1 (en) Apparatus and methods for transferring digital content
EP2113152B1 (en) A conditional access system
CN108476337B (zh) 从数字内容识别外围设备的方法和设备
CN103237011B (zh) 数字内容加密传送方法以及服务器端
JP2000324096A (ja) コンテンツ保護システム
KR20060087459A (ko) 클라이언트 도메인 내에서의 디지털 콘텐츠의 이용을관리하기 위한 방법 및 이 방법을 실행하는 디바이스
JP4734324B2 (ja) 複数の装置にまたがるアクセス認可
Bloom Digital cinema content security and the DCI
CN101009549B (zh) 用于数字版权管理的解码装置
JP2005020218A (ja) ライセンス情報送信装置、ライセンス情報送信プログラム、ライセンス情報送信方法およびライセンス情報受信装置、ライセンス情報受信プログラム、ライセンス情報受信方法
WO2014072156A1 (en) Method and system of secure service supply to a user
JPWO2006006233A1 (ja) コンテンツ記録装置及びデータ配信システム
JP2004252966A (ja) コンテンツ配信システム
JP2001251290A (ja) データ放送システムとコンテンツの配信、蓄積、再生方法
CN112153417A (zh) 一种用于流媒体内容版权的内容加扰保护方法及系统
SAMČOVIĆ Security Issues in Digital Cinema
JP2006310990A (ja) コンテンツ配信システム、コンテンツ配信方法、サーバ装置及び端末装置、並びにプログラム。
Yang et al. A Lightweight Buyer-Seller Fingerprinting Protocol

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20091210

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20091210

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120606

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20120830

A602 Written permission of extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A602

Effective date: 20120906

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20121205

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130612

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20130905

A602 Written permission of extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A602

Effective date: 20130912

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20140226

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20150226

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20150903

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20151021