Classifications

• • 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
  • H04N21/45—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 programme guide from data received from the Internet and a Head-end or 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
  • 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

Landscapes

• Engineering & Computer Science (AREA)
• Databases & Information Systems (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Computer Security & Cryptography (AREA)
• Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
• Interconnected Communication Systems, Intercoms, And Interphones (AREA)
• Studio Devices (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=9397424

Family Applications (1)

Country Status (7)

Families Citing this family (20)

Citations (3)

Family Cites Families (1)

• 1990
  • 1990-06-08 FR FR9007165A patent/FR2663179B1/en not_active Expired - Lifetime
• 1991
  • 1991-06-05 EP EP91401466A patent/EP0461029B1/en not_active Expired - Lifetime
  • 1991-06-05 DE DE69108781T patent/DE69108781D1/en not_active Expired - Lifetime
  • 1991-06-06 NO NO912179A patent/NO178650C/en unknown
  • 1991-06-07 AU AU78285/91A patent/AU636039B2/en not_active Ceased
  • 1991-06-07 FI FI912752A patent/FI912752A7/en not_active Application Discontinuation
  • 1991-06-10 JP JP3164957A patent/JPH0795725B2/en not_active Expired - Lifetime

Patent Citations (3)

Also Published As

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