CO5300513A1 - METHOD AND SYSTEM FOR THE TRANSMISSION OF DESCRIBING INFORMATION - Google Patents

METHOD AND SYSTEM FOR THE TRANSMISSION OF DESCRIBING INFORMATION

Info

Publication number
CO5300513A1
CO5300513A1 CO01004198A CO01004198A CO5300513A1 CO 5300513 A1 CO5300513 A1 CO 5300513A1 CO 01004198 A CO01004198 A CO 01004198A CO 01004198 A CO01004198 A CO 01004198A CO 5300513 A1 CO5300513 A1 CO 5300513A1
Authority
CO
Colombia
Prior art keywords
channel
encrypted
transmission
authorization messages
messages
Prior art date
Application number
CO01004198A
Other languages
Spanish (es)
Inventor
Andre Kudelski
Marco Sasselli
Original Assignee
Nagracard Sa
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 Nagracard Sa filed Critical Nagracard Sa
Publication of CO5300513A1 publication Critical patent/CO5300513A1/en

Links

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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4383—Accessing a communication channel
    • H04N21/4384—Accessing a communication channel involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
    • 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 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/165—Centralised control of user terminal ; Registering at central
    • 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)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Sistema de transmisión multi-canales de informaciones encriptadas para la televisión de pago que comprende un centro de gestión y al menos una unidad de abonado, transmitiendo el centro de gestión las señales encriptadas y los mensajes de autorización mono-canal (ECM) encriptados de cada canal, caracterizado por comprender los mensajes de autorización multi-canales (MECM) comunes a un grupo de canales, estos mensajes estando combinados con los mensajes de autorización mono-canal (ECM) del canal que está en proceso de recepción para desencriptar este último.<EMI FILE="01004198_1" ID="1" IMF=JPEG >Multi-channel transmission system of encrypted information for pay television comprising a management center and at least one subscriber unit, the management center transmitting the encrypted signals and the encrypted mono-channel authorization messages (ECM) of each channel, characterized by understanding the multi-channel authorization messages (MECM) common to a group of channels, these messages being combined with the mono-channel authorization messages (ECM) of the channel being received to decrypt the latter. <EMI FILE = "01004198_1" ID = "1" MFI = JPEG>

CO01004198A 2000-01-28 2001-01-22 METHOD AND SYSTEM FOR THE TRANSMISSION OF DESCRIBING INFORMATION CO5300513A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1662000 2000-01-28

Publications (1)

Publication Number Publication Date
CO5300513A1 true CO5300513A1 (en) 2003-07-31

Family

ID=4418815

Family Applications (1)

Application Number Title Priority Date Filing Date
CO01004198A CO5300513A1 (en) 2000-01-28 2001-01-22 METHOD AND SYSTEM FOR THE TRANSMISSION OF DESCRIBING INFORMATION

Country Status (5)

Country Link
AR (1) AR027294A1 (en)
CO (1) CO5300513A1 (en)
MY (1) MY123632A (en)
TW (1) TW515215B (en)
ZA (1) ZA200204669B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI512532B (en) * 2013-11-25 2015-12-11 Yahoo Inc Mobile device for information encryption and transferring and method thereof

Also Published As

Publication number Publication date
TW515215B (en) 2002-12-21
MY123632A (en) 2006-05-31
ZA200204669B (en) 2003-06-11
AR027294A1 (en) 2003-03-19

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Legal Events

Date Code Title Description
FC Application refused