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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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)
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 (enExample)
EP (1) EP0800745B1 (enExample)
JP (1) JP4491069B2 (enExample)
KR (1) KR100436610B1 (enExample)
DE (1) DE69630012T2 (enExample)
ES (1) ES2206594T3 (enExample)
MY (1) MY118874A (enExample)
WO (1) WO1997016924A1 (enExample)

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CN1615648A (zh) * 2002-01-14 2005-05-11 皇家飞利浦电子股份有限公司 用于提供时间相关条件存取的系统
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Also Published As

Publication number Publication date
DE69630012D1 (de) 2003-10-23
EP0800745A1 (en) 1997-10-15
EP0800745B1 (en) 2003-09-17
JP4491069B2 (ja) 2010-06-30
JPH10512428A (ja) 1998-11-24
WO1997016924A1 (en) 1997-05-09
ES2206594T3 (es) 2004-05-16
MY118874A (en) 2005-02-28
US5991400A (en) 1999-11-23
DE69630012T2 (de) 2004-06-03
KR987001184A (ko) 1998-04-30

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