JP4491069B2 - 時間シフト限定アクセス - Google Patents

時間シフト限定アクセス Download PDF

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Publication number
JP4491069B2
JP4491069B2 JP51718397A JP51718397A JP4491069B2 JP 4491069 B2 JP4491069 B2 JP 4491069B2 JP 51718397 A JP51718397 A JP 51718397A JP 51718397 A JP51718397 A JP 51718397A JP 4491069 B2 JP4491069 B2 JP 4491069B2
Authority
JP
Japan
Prior art keywords
control word
safety device
pay
access system
recorded
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
JP51718397A
Other languages
English (en)
Japanese (ja)
Other versions
JPH10512428A5 (cg-RX-API-DMAC7.html
JPH10512428A (ja
Inventor
フランシスカス ルーカス アントニウス ヨハネス カンペルマン
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 NV
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 NV, Koninklijke Philips Electronics NV filed Critical Koninklijke Philips NV
Publication of JPH10512428A publication Critical patent/JPH10512428A/ja
Publication of JPH10512428A5 publication Critical patent/JPH10512428A5/ja
Application granted granted Critical
Publication of JP4491069B2 publication Critical patent/JP4491069B2/ja
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)
JP51718397A 1995-10-31 1996-10-23 時間シフト限定アクセス Expired - Lifetime JP4491069B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP95202980 1995-10-31
NL95202980.9 1995-10-31
PCT/IB1996/001137 WO1997016924A1 (en) 1995-10-31 1996-10-23 Time-shifted conditional access

Publications (3)

Publication Number Publication Date
JPH10512428A JPH10512428A (ja) 1998-11-24
JPH10512428A5 JPH10512428A5 (cg-RX-API-DMAC7.html) 2004-10-14
JP4491069B2 true JP4491069B2 (ja) 2010-06-30

Family

ID=8220794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51718397A Expired - Lifetime JP4491069B2 (ja) 1995-10-31 1996-10-23 時間シフト限定アクセス

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
KR100436610B1 (ko) 2004-09-23
EP0800745A1 (en) 1997-10-15
DE69630012T2 (de) 2004-06-03
KR987001184A (ko) 1998-04-30
EP0800745B1 (en) 2003-09-17
JPH10512428A (ja) 1998-11-24

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