WO2002017635A3 - Transmitting and processing protected content in a conditional access system - Google Patents

Transmitting and processing protected content in a conditional access system Download PDF

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Publication number
WO2002017635A3
WO2002017635A3 PCT/IB2001/001845 IB0101845W WO0217635A3 WO 2002017635 A3 WO2002017635 A3 WO 2002017635A3 IB 0101845 W IB0101845 W IB 0101845W WO 0217635 A3 WO0217635 A3 WO 0217635A3
Authority
WO
WIPO (PCT)
Prior art keywords
conditional access
information
transmitting
access system
content management
Prior art date
Application number
PCT/IB2001/001845
Other languages
French (fr)
Other versions
WO2002017635A2 (en
Inventor
David Leporini
Frederic Dublanchet
Andre Surcouf
Nicolas Gaude
Eric Delaunay
Original Assignee
Canal & Technologies Sa
David Leporini
Frederic Dublanchet
Andre Surcouf
Nicolas Gaude
Eric Delaunay
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 Canal & Technologies Sa, David Leporini, Frederic Dublanchet, Andre Surcouf, Nicolas Gaude, Eric Delaunay filed Critical Canal & Technologies Sa
Priority to CA 2420795 priority Critical patent/CA2420795C/en
Priority to JP2002522198A priority patent/JP2004507826A/en
Priority to EP01970094.7A priority patent/EP1332621B1/en
Priority to US10/362,110 priority patent/US7848521B2/en
Priority to AU2001290207A priority patent/AU2001290207A1/en
Publication of WO2002017635A2 publication Critical patent/WO2002017635A2/en
Priority to EP02255813A priority patent/EP1286351B1/en
Priority to JP2002240717A priority patent/JP4257084B2/en
Publication of WO2002017635A3 publication Critical patent/WO2002017635A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • 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
    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server
    • H04N21/2541—Rights Management
    • 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
    • H04N21/26606—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 entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
    • 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
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4334—Recording operations
    • 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
    • H04N21/4408—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 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]
    • H04N21/40—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
    • H04N21/45—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
    • 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
    • H04N21/8355—Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed
    • 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
    • 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
    • H04N7/167—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
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled

Abstract

Transmitting and processing conditional access information (eg. Entitlement Management Messages EMM/ Entitlement Control Message ECM) and content management information (eg. Usage Rules Messages URM) independently for protected contents (eg. TV programmes, movies) in a conditional access system like pay TV systems. By separating the conditional access information from the content management information, it can be made easier to divide responsibility for the different types of information between different parties. The content management information is preferably transmitted at least partially at a different time from the conditional access information, and may be transmitted partially from a different origin.
PCT/IB2001/001845 2000-08-24 2001-08-24 Transmitting and processing protected content in a conditional access system WO2002017635A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CA 2420795 CA2420795C (en) 2000-08-24 2001-08-24 Transmitting and processing protected content
JP2002522198A JP2004507826A (en) 2000-08-24 2001-08-24 Transmission and reception of protected content
EP01970094.7A EP1332621B1 (en) 2000-08-24 2001-08-24 Transmitting and processing protected content in a conditional access system
US10/362,110 US7848521B2 (en) 2000-08-24 2001-08-24 Transmitting and processing protected content
AU2001290207A AU2001290207A1 (en) 2000-08-24 2001-08-24 Transmitting and processing protected content in a conditional access system
EP02255813A EP1286351B1 (en) 2001-08-21 2002-08-21 File and content management
JP2002240717A JP4257084B2 (en) 2001-08-21 2002-08-21 File and content management

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20000402349 EP1182874A1 (en) 2000-08-24 2000-08-24 Digital content protection system
EP00402349.5 2000-08-24

Publications (2)

Publication Number Publication Date
WO2002017635A2 WO2002017635A2 (en) 2002-02-28
WO2002017635A3 true WO2002017635A3 (en) 2003-05-22

Family

ID=8173826

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2001/001845 WO2002017635A2 (en) 2000-08-24 2001-08-24 Transmitting and processing protected content in a conditional access system

Country Status (8)

Country Link
US (1) US7848521B2 (en)
EP (2) EP1182874A1 (en)
JP (1) JP2004507826A (en)
CN (1) CN1245836C (en)
AU (1) AU2001290207A1 (en)
CA (1) CA2420795C (en)
MY (1) MY145515A (en)
WO (1) WO2002017635A2 (en)

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