DE69630012T2 - Zeitverschobener bedingter zugang - Google Patents

Zeitverschobener bedingter zugang Download PDF

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Publication number
DE69630012T2
DE69630012T2 DE69630012T DE69630012T DE69630012T2 DE 69630012 T2 DE69630012 T2 DE 69630012T2 DE 69630012 T DE69630012 T DE 69630012T DE 69630012 T DE69630012 T DE 69630012T DE 69630012 T2 DE69630012 T2 DE 69630012T2
Authority
DE
Germany
Prior art keywords
ecm
control word
authorization
krd
scd
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.)
Expired - Lifetime
Application number
DE69630012T
Other languages
German (de)
English (en)
Other versions
DE69630012D1 (de
Inventor
Lucas Franciscus KAMPERMAN
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of DE69630012D1 publication Critical patent/DE69630012D1/de
Application granted granted Critical
Publication of DE69630012T2 publication Critical patent/DE69630012T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H04N21/25—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
    • H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
    • H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
    • 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
    • H04N21/45—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]
    • H04N21/80—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
DE69630012T 1995-10-31 1996-10-23 Zeitverschobener bedingter zugang Expired - Lifetime DE69630012T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP95202980 1995-10-31
EP95202980 1995-10-31
PCT/IB1996/001137 WO1997016924A1 (en) 1995-10-31 1996-10-23 Time-shifted conditional access

Publications (2)

Publication Number Publication Date
DE69630012D1 DE69630012D1 (de) 2003-10-23
DE69630012T2 true DE69630012T2 (de) 2004-06-03

Family

ID=8220794

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69630012T Expired - Lifetime DE69630012T2 (de) 1995-10-31 1996-10-23 Zeitverschobener bedingter zugang

Country Status (8)

Country Link
US (1) US5991400A (cg-RX-API-DMAC7.html)
EP (1) EP0800745B1 (cg-RX-API-DMAC7.html)
JP (1) JP4491069B2 (cg-RX-API-DMAC7.html)
KR (1) KR100436610B1 (cg-RX-API-DMAC7.html)
DE (1) DE69630012T2 (cg-RX-API-DMAC7.html)
ES (1) ES2206594T3 (cg-RX-API-DMAC7.html)
MY (1) MY118874A (cg-RX-API-DMAC7.html)
WO (1) WO1997016924A1 (cg-RX-API-DMAC7.html)

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US7649829B2 (en) 2001-10-12 2010-01-19 Qualcomm Incorporated Method and system for reduction of decoding complexity in a communication system
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Also Published As

Publication number Publication date
ES2206594T3 (es) 2004-05-16
DE69630012D1 (de) 2003-10-23
MY118874A (en) 2005-02-28
WO1997016924A1 (en) 1997-05-09
US5991400A (en) 1999-11-23
KR100436610B1 (ko) 2004-09-23
EP0800745A1 (en) 1997-10-15
KR987001184A (ko) 1998-04-30
EP0800745B1 (en) 2003-09-17
JP4491069B2 (ja) 2010-06-30
JPH10512428A (ja) 1998-11-24

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