ES488279A0 - Perfeccionamientos en sistemas de transmision de informacionentre un centro de emision y unos puestos receptores - Google Patents

Perfeccionamientos en sistemas de transmision de informacionentre un centro de emision y unos puestos receptores

Info

Publication number
ES488279A0
ES488279A0 ES488279A ES488279A ES488279A0 ES 488279 A0 ES488279 A0 ES 488279A0 ES 488279 A ES488279 A ES 488279A ES 488279 A ES488279 A ES 488279A ES 488279 A0 ES488279 A0 ES 488279A0
Authority
ES
Spain
Prior art keywords
information transmission
transmission systems
emission center
receiving posts
posts
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.)
Granted
Application number
ES488279A
Other languages
English (en)
Other versions
ES8106993A1 (es
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
Original Assignee
Telediffusion de France ets Public de Diffusion
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 filed Critical Telediffusion de France ets Public de Diffusion
Publication of ES488279A0 publication Critical patent/ES488279A0/es
Publication of ES8106993A1 publication Critical patent/ES8106993A1/es
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]

Landscapes

  • Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Small-Scale Networks (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Lock And Its Accessories (AREA)
  • Selective Calling Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Storage Device Security (AREA)
  • Circuits Of Receivers In General (AREA)
ES488279A 1979-02-06 1980-02-05 Perfeccionamientos en sistemas de transmision de informacionentre un centro de emision y unos puestos receptores Expired ES8106993A1 (es)

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 (2)

Publication Number Publication Date
ES488279A0 true ES488279A0 (es) 1980-08-01
ES8106993A1 ES8106993A1 (es) 1980-08-01

Family

ID=9221651

Family Applications (1)

Application Number Title Priority Date Filing Date
ES488279A Expired ES8106993A1 (es) 1979-02-06 1980-02-05 Perfeccionamientos en sistemas de transmision de informacionentre un centro de emision y unos puestos receptores

Country Status (9)

Country Link
US (1) US4323921A (es)
EP (1) EP0014653B1 (es)
JP (1) JPH027234B2 (es)
CA (1) CA1157144A (es)
DE (1) DE3069329D1 (es)
ES (1) ES8106993A1 (es)
FR (1) FR2448825A1 (es)
SU (1) SU963479A3 (es)
WO (1) WO1980001635A1 (es)

Families Citing this family (213)

* Cited by examiner, † Cited by third party
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WO1980001635A1 (fr) 1980-08-07
CA1157144A (en) 1983-11-15
US4323921A (en) 1982-04-06
SU963479A3 (ru) 1982-09-30
DE3069329D1 (en) 1984-11-08
JPH027234B2 (es) 1990-02-16
FR2448825B1 (es) 1984-05-11
EP0014653A1 (fr) 1980-08-20
JPS56500075A (es) 1981-01-22
ES8106993A1 (es) 1980-08-01
FR2448825A1 (fr) 1980-09-05
EP0014653B1 (fr) 1984-10-03

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