DE3474496D1 - Encrypted broadcast television system - Google Patents

Encrypted broadcast television system

Info

Publication number
DE3474496D1
DE3474496D1 DE8484902602T DE3474496T DE3474496D1 DE 3474496 D1 DE3474496 D1 DE 3474496D1 DE 8484902602 T DE8484902602 T DE 8484902602T DE 3474496 T DE3474496 T DE 3474496T DE 3474496 D1 DE3474496 D1 DE 3474496D1
Authority
DE
Germany
Prior art keywords
television system
broadcast television
encrypted broadcast
encrypted
television
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
Application number
DE8484902602T
Other languages
English (en)
Inventor
Arthur Mason
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.)
Independent Broadcasting Authority
Original Assignee
Independent Broadcasting Authority
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 Independent Broadcasting Authority filed Critical Independent Broadcasting Authority
Application granted granted Critical
Publication of DE3474496D1 publication Critical patent/DE3474496D1/de
Expired 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
    • H04N21/26613—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 keys in general
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/64—Addressing
    • H04N21/6402—Address allocation for clients
DE8484902602T 1983-06-30 1984-07-02 Encrypted broadcast television system Expired DE3474496D1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB8317796 1983-06-30
GB8319817 1983-07-22
PCT/GB1984/000237 WO1985000491A1 (en) 1983-06-30 1984-07-02 Encrypted broadcast television system

Publications (1)

Publication Number Publication Date
DE3474496D1 true DE3474496D1 (en) 1988-11-10

Family

ID=26286514

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484902602T Expired DE3474496D1 (en) 1983-06-30 1984-07-02 Encrypted broadcast television system

Country Status (4)

Country Link
US (1) US4736422A (de)
EP (1) EP0148235B1 (de)
DE (1) DE3474496D1 (de)
WO (1) WO1985000491A1 (de)

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Also Published As

Publication number Publication date
EP0148235B1 (de) 1988-10-05
WO1985000491A1 (en) 1985-01-31
EP0148235A1 (de) 1985-07-17
US4736422A (en) 1988-04-05

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Legal Events

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8364 No opposition during term of opposition