JPS56500075A - - Google Patents

Info

Publication number
JPS56500075A
JPS56500075A JP50038880A JP50038880A JPS56500075A JP S56500075 A JPS56500075 A JP S56500075A JP 50038880 A JP50038880 A JP 50038880A JP 50038880 A JP50038880 A JP 50038880A JP S56500075 A JPS56500075 A JP S56500075A
Authority
JP
Japan
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
JP50038880A
Other languages
Japanese (ja)
Other versions
JPH027234B2 (US20100223739A1-20100909-C00005.png
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 filed Critical
Publication of JPS56500075A publication Critical patent/JPS56500075A/ja
Publication of JPH027234B2 publication Critical patent/JPH027234B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Storage Device Security (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Lock And Its Accessories (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Selective Calling Equipment (AREA)
JP55500388A 1979-02-06 1980-02-05 Expired - Lifetime JPH027234B2 (US20100223739A1-20100909-C00005.png)

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
JPS56500075A true JPS56500075A (US20100223739A1-20100909-C00005.png) 1981-01-22
JPH027234B2 JPH027234B2 (US20100223739A1-20100909-C00005.png) 1990-02-16

Family

ID=9221651

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55500388A Expired - Lifetime JPH027234B2 (US20100223739A1-20100909-C00005.png) 1979-02-06 1980-02-05

Country Status (9)

Country Link
US (1) US4323921A (US20100223739A1-20100909-C00005.png)
EP (1) EP0014653B1 (US20100223739A1-20100909-C00005.png)
JP (1) JPH027234B2 (US20100223739A1-20100909-C00005.png)
CA (1) CA1157144A (US20100223739A1-20100909-C00005.png)
DE (1) DE3069329D1 (US20100223739A1-20100909-C00005.png)
ES (1) ES8106993A1 (US20100223739A1-20100909-C00005.png)
FR (1) FR2448825A1 (US20100223739A1-20100909-C00005.png)
SU (1) SU963479A3 (US20100223739A1-20100909-C00005.png)
WO (1) WO1980001635A1 (US20100223739A1-20100909-C00005.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06125554A (ja) * 1981-11-19 1994-05-06 Communications Satellite Corp <Comsat> 加入衛星テレビジョン暗号化用防護方法

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* Cited by examiner, † Cited by third party
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JPH027234B2 (US20100223739A1-20100909-C00005.png) 1990-02-16
EP0014653A1 (fr) 1980-08-20
EP0014653B1 (fr) 1984-10-03
FR2448825B1 (US20100223739A1-20100909-C00005.png) 1984-05-11
SU963479A3 (ru) 1982-09-30
ES8106993A1 (es) 1980-08-01
DE3069329D1 (en) 1984-11-08
CA1157144A (en) 1983-11-15
FR2448825A1 (fr) 1980-09-05

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