KR100436610B1 - 시간이동된조건부액세스 - Google Patents

시간이동된조건부액세스 Download PDF

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Publication number
KR100436610B1
KR100436610B1 KR1019970704431A KR19970704431A KR100436610B1 KR 100436610 B1 KR100436610 B1 KR 100436610B1 KR 1019970704431 A KR1019970704431 A KR 1019970704431A KR 19970704431 A KR19970704431 A KR 19970704431A KR 100436610 B1 KR100436610 B1 KR 100436610B1
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KR
South Korea
Prior art keywords
control word
security device
scd
ecm
krd
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
KR1019970704431A
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English (en)
Korean (ko)
Other versions
KR987001184A (ko
Inventor
프랜시스쿠스 루카스 안토니우스 요하네스 캄페르만
Original Assignee
코닌클리케 필립스 일렉트로닉스 엔.브이.
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Application filed by 코닌클리케 필립스 일렉트로닉스 엔.브이. filed Critical 코닌클리케 필립스 일렉트로닉스 엔.브이.
Publication of KR987001184A publication Critical patent/KR987001184A/ko
Application granted granted Critical
Publication of KR100436610B1 publication Critical patent/KR100436610B1/ko
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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)
KR1019970704431A 1995-10-31 1996-10-23 시간이동된조건부액세스 Expired - Lifetime KR100436610B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP95202980 1995-10-31
EP95202980.9 1995-10-31

Publications (2)

Publication Number Publication Date
KR987001184A KR987001184A (ko) 1998-04-30
KR100436610B1 true KR100436610B1 (ko) 2004-09-23

Family

ID=8220794

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970704431A Expired - Lifetime KR100436610B1 (ko) 1995-10-31 1996-10-23 시간이동된조건부액세스

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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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
EP0800745A1 (en) 1997-10-15
DE69630012T2 (de) 2004-06-03
KR987001184A (ko) 1998-04-30
EP0800745B1 (en) 2003-09-17
JP4491069B2 (ja) 2010-06-30
JPH10512428A (ja) 1998-11-24

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