DE3069329D1 - System for conveying information between a transmitting centre and receiving stations, the system being provided with control means for gaining access to the conveyed information - Google Patents

System for conveying information between a transmitting centre and receiving stations, the system being provided with control means for gaining access to the conveyed information

Info

Publication number
DE3069329D1
DE3069329D1 DE8080400170T DE3069329T DE3069329D1 DE 3069329 D1 DE3069329 D1 DE 3069329D1 DE 8080400170 T DE8080400170 T DE 8080400170T DE 3069329 T DE3069329 T DE 3069329T DE 3069329 D1 DE3069329 D1 DE 3069329D1
Authority
DE
Germany
Prior art keywords
information
control means
receiving stations
gaining access
conveyed
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
DE8080400170T
Other languages
English (en)
Inventor
Louis Claude Guillou
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.)
Telediffusion de France ets Public de Diffusion
Etat Francais
Original Assignee
Telediffusion de France ets Public de Diffusion
Etat Francais
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 Telediffusion de France ets Public de Diffusion, Etat Francais filed Critical Telediffusion de France ets Public de Diffusion
Application granted granted Critical
Publication of DE3069329D1 publication Critical patent/DE3069329D1/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
    • H04N21/26606—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]
    • H04N21/20—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]
    • H04N21/40—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]
DE8080400170T 1979-02-06 1980-02-04 System for conveying information between a transmitting centre and receiving stations, the system being provided with control means for gaining access to the conveyed information Expired DE3069329D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7902995A FR2448825A1 (fr) 1979-02-06 1979-02-06 Systeme de transmission d'information entre un centre d'emission et des postes recepteurs, ce systeme etant muni d'un moyen de controle de l'acces a l'information transmise

Publications (1)

Publication Number Publication Date
DE3069329D1 true DE3069329D1 (en) 1984-11-08

Family

ID=9221651

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080400170T Expired DE3069329D1 (en) 1979-02-06 1980-02-04 System for conveying information between a transmitting centre and receiving stations, the system being provided with control means for gaining access to the conveyed information

Country Status (9)

Country Link
US (1) US4323921A (de)
EP (1) EP0014653B1 (de)
JP (1) JPH027234B2 (de)
CA (1) CA1157144A (de)
DE (1) DE3069329D1 (de)
ES (1) ES488279A0 (de)
FR (1) FR2448825A1 (de)
SU (1) SU963479A3 (de)
WO (1) WO1980001635A1 (de)

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Publication number Publication date
FR2448825B1 (de) 1984-05-11
JPS56500075A (de) 1981-01-22
US4323921A (en) 1982-04-06
EP0014653B1 (de) 1984-10-03
WO1980001635A1 (fr) 1980-08-07
FR2448825A1 (fr) 1980-09-05
ES8106993A1 (es) 1980-08-01
JPH027234B2 (de) 1990-02-16
CA1157144A (en) 1983-11-15
ES488279A0 (es) 1980-08-01
SU963479A3 (ru) 1982-09-30
EP0014653A1 (de) 1980-08-20

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