TWI456997B - 拌碼加密內容之存取控制方法 - Google Patents

拌碼加密內容之存取控制方法 Download PDF

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Publication number
TWI456997B
TWI456997B TW095138741A TW95138741A TWI456997B TW I456997 B TWI456997 B TW I456997B TW 095138741 A TW095138741 A TW 095138741A TW 95138741 A TW95138741 A TW 95138741A TW I456997 B TWI456997 B TW I456997B
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Taiwan
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terminal
access
content
management unit
information
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TW095138741A
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English (en)
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TW200806034A (en
Inventor
Anthony Chevallier
Stephane Lanfranchi
Erwann Magis
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Viaccess Sa
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Priority claimed from FR0553852A external-priority patent/FR2894756B1/fr
Application filed by Viaccess Sa filed Critical Viaccess Sa
Publication of TW200806034A publication Critical patent/TW200806034A/zh
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Publication of TWI456997B publication Critical patent/TWI456997B/zh

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    • 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
    • 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]
    • 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
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/4147—PVR [Personal Video Recorder]
    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • 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, rendering scenes according to MPEG-4 scene graphs
    • H04N21/4402—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 reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440281—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 reformatting operations of video signals for household redistribution, storage or real-time display by altering the temporal resolution, e.g. by frame skipping
    • 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
    • H04N21/45—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
    • H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
    • 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
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
    • 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
    • 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
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17318—Direct or substantially direct transmission and handling of requests

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Technology Law (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Storage Device Security (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)

Claims (15)

  1. 一種用於存取控制拌碼加密內容之方法，該拌碼加密內容係由與一存取管理單元合作之一操作者提供給一接收終端機，該終端機被提供有至少一存取控制模組，該方法包含以下步驟：將該內容與用於解拌碼該內容所必需的多數資訊相關聯；將具有該等多數資訊的該內容發送給該終端機；當該終端機接收該等多數資訊時，透過一點至點鏈結，系統性或偶爾將該等多數資訊中的至少一項資訊傳回給該存取管理單元；使用該存取管理單元以驗證所傳送之該資訊是否與先前分配給該終端機之存取權利相容；傳送至少一控制參數給該終端機以在如果所傳送之該資訊與先前分配給該終端機之存取權利相容時啟用該內容；否則，該管理單元不將該參數傳送至該終端機；該方法其中之由該存取管理單元發送至該終端機的該控制參數係一ECMR 訊息，其紀錄有該內容且包含控制該內容之重複使用的存取準則。
  2. 如請求項1所述之方法，其中用於解拌碼該內容所必需的該等多數資訊係在一ECM訊息中被發送給該終端機，該ECM訊息包含至少一存取準則CA、由一金鑰Kecm 加密的一控制字之一密碼CW*Kecm 。
  3. 如請求項1所述之方法，其中被提供給該終端機的內容被一DRM許可證保護。
  4. 如請求項1所述之方法，其中該拌碼加密內容係分配給一組接收終端機，且其中該存取管理單元為整組接收終端機中之一主終端機，且該接收終端機為整組接收終端機中之一從屬終端機。
  5. 如請求項4所述之方法，其中該從屬終端機傳回至少該密碼CW*Kecm 給該主終端機。
  6. 一種存取控制系統，包含：包含一內容伺服器的一發射裝置、與該發射裝置關聯的一存取管理單元、被提供有至少一存取控制模組的一接收終端機，該至少一存取控制模組控制由該伺服器所傳送的一拌碼加密內容之存取且用於解拌碼該內容所必需的多數資訊係與該拌碼內容相關聯，該接收終端機透過一點至點鏈結連接到該存取管理單元，該存取控制模組係適以系統性地或偶爾將包含在用於解拌碼該內容所必需的該等多數資訊中的至少一項資訊傳回給該存取管理單元，且其中該存取管理單元係適以驗證該傳回資訊是否與先前分配給該終端機之該存取權利相容，且如果該傳回資訊與先前分配給該終端機之存取權利相容，則發送至少一控制參數給該終端機以啟用該內容，或者如果該傳回資訊與先前分配給該終端機之存取權利不相容，則不將該參數發送至該終端機，該系統其中之由該存取管理單元發送至該終端機 的該控制參數係要被紀錄有該內容之一ECMR 訊息且其包含將被用來控制該內容之重複使用的存取準則。
  7. 如請求項6所述之存取控制系統，其中用於解拌碼該內容所必需的該等多數資訊係在一ECM訊息中被發送給該終端機，該ECM訊息包含至少一存取準則CA、由一金鑰Kecm 加密的一控制字CW之一密碼CW*Kecm 。
  8. 如請求項7所述之存取控制系統，其中該存取管理單元係與該發射裝置區別開。
  9. 如請求項6所述之存取控制系統，其中該存取管理單元係被整合進該發射裝置。
  10. 如請求項9所述之存取控制系統，其中該主終端機係被整合進該發射裝置。
  11. 如請求項9所述之存取控制系統，其中該主終端機被整合到一收集接收天線。
  12. 如請求項11所述之系統，其中該主終端機在該內容伺服器與整組從屬終端機之間執行一橋接功能。
  13. 一種用於接收一拌碼加密內容之接收終端機，該拌碼加密內容係與用以解拌碼該內容所必需的多數資訊傳送，該終端機係透過一點至點鏈結連接至一存取管理單元且包含一存取控制模組，該存取控制模組包括傳回構件，其系統性地或偶爾將在用於解拌碼該內容所必需的該等多數資訊中的至少一項資訊透過一點至點鏈結傳回給該存取管理單元，而啟用該存取管理單元以驗證該 傳回資訊是否與先前分配給該終端機之該存取權利相容，且如果該傳回資訊與先前分配給該終端機之存取權利相容，則發送至少一控制參數給該終端機以啟用該內容，或者如果該傳回資訊與先前分配給該終端機之存取權利不相容，則不將該參數發送至該終端機，由該存取管理單元傳送至該存取控制模組的該控制參數係將被紀錄有該內容且包含將被用來控制該內容之重複使用的存取準則之一ECMR 訊息。
  14. 一種儲存在一儲存媒體上且包含指令之電腦程式，該指令用以當該電腦程式在一電腦上運行時使用如請求項1之存取控制方法。
  15. 如請求項14之電腦程式，其中該拌碼加密內容係分配給一組接收終端機，且其中該存取管理單元為整組接收終端機中之一主終端機，且該接收終端機為整組接收終端機中之一從屬終端機。
TW095138741A 2005-12-13 2006-10-20 拌碼加密內容之存取控制方法 TWI456997B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0553852A FR2894756B1 (fr) 2005-12-13 2005-12-13 Procede de controle d'acces a un contenu embrouille
FR0651130A FR2894757B1 (fr) 2005-12-13 2006-03-31 Procede de controle d'acces a un contenu embrouille

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TW200806034A TW200806034A (en) 2008-01-16
TWI456997B true TWI456997B (zh) 2014-10-11

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US (2) US20080301437A1 (zh)
EP (1) EP1961223B1 (zh)
KR (1) KR101334763B1 (zh)
CN (1) CN102761784B (zh)
DK (1) DK1961223T3 (zh)
ES (1) ES2417141T3 (zh)
FR (1) FR2894757B1 (zh)
PL (1) PL1961223T3 (zh)
TW (1) TWI456997B (zh)
WO (1) WO2007068507A2 (zh)

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EP1961223A2 (fr) 2008-08-27
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FR2894757A1 (fr) 2007-06-15
FR2894757B1 (fr) 2008-05-09
DK1961223T3 (da) 2013-06-24
PL1961223T3 (pl) 2013-08-30
US8488794B2 (en) 2013-07-16
US20080301437A1 (en) 2008-12-04
KR20080075875A (ko) 2008-08-19
ES2417141T3 (es) 2013-08-06
US20120008781A1 (en) 2012-01-12
WO2007068507A3 (fr) 2007-10-11
TW200806034A (en) 2008-01-16
CN102761784B (zh) 2015-02-25
EP1961223B1 (fr) 2013-03-27

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