BR9812703A - Método e aparelho para transmissão de corrente de dados criptografada - Google Patents

Método e aparelho para transmissão de corrente de dados criptografada

Info

Publication number
BR9812703A
BR9812703A BR9812703-9A BR9812703A BR9812703A BR 9812703 A BR9812703 A BR 9812703A BR 9812703 A BR9812703 A BR 9812703A BR 9812703 A BR9812703 A BR 9812703A
Authority
BR
Brazil
Prior art keywords
data
data stream
heaped
decoder
transmission
Prior art date
Application number
BR9812703-9A
Other languages
English (en)
Other versions
BRPI9812703B1 (pt
Inventor
Michel Maillard
Christian Bernardeau
Jean-Luc Dauvois
Original Assignee
Canal Plus 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27238734&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9812703(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Canal Plus Sa filed Critical Canal Plus Sa
Publication of BR9812703A publication Critical patent/BR9812703A/pt
Publication of BRPI9812703B1 publication Critical patent/BRPI9812703B1/pt

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
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/23—Arrangements for conditional access to broadcast information or to broadcast-related services using cryptography, e.g. encryption, authentication, key distribution
    • 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
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4183—External card to be used in combination with the client device, e.g. for conditional access providing its own processing capabilities, e.g. external module for video decoding
    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card
    • 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Communication Control (AREA)
  • Storage Device Security (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Buffer Packaging (AREA)
  • Materials For Medical Uses (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Circuits Of Receivers In General (AREA)
  • Computer And Data Communications (AREA)

Abstract

Patente de Invenção <B>"MéTODO E APARELHO PARA TRANSMISSãO DE CORRENTE DE DADOS CRIPTOGRAFADA"<D>. Um método de transmissão e recepção de dados amontoados, no qual os dados amontoados são transmitidos para um decodificador (2020), os dados amontoados sendo passados a, e desamontoados por, um módulo de segurança ou cartão inteligente (3020) inserido no decodificador (2020) e caracterizado pelo fato de que a corrente de dados amontoada é passada do cartão inteligente (2020) de volta para o decodificador (3020) em uma forma criptografada. A criptografação da corrente de dados pode ser conduizida no cartão (2020), ou como uma etapa de criptografação secundária na transmissão. A corrente de dados pode corresponder diretamente a dados audiovisuais desamontoados no módulo de segurança ou a uma corrente de dados de palavras de controle usados subseq³entemente pelo decodificador para desamontoar a transmissão.
BRPI9812703A 1997-10-02 1998-10-02 método e aparelho para transmissão de corrente de dados criptografada BRPI9812703B1 (pt)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP97402322 1997-10-02
EP98401389 1998-06-09
EP98401388 1998-06-09
PCT/IB1998/001610 WO1999018729A1 (en) 1997-10-02 1998-10-02 Method and apparatus for encrypted data stream transmission

Publications (2)

Publication Number Publication Date
BR9812703A true BR9812703A (pt) 2000-08-22
BRPI9812703B1 BRPI9812703B1 (pt) 2015-12-15

Family

ID=27238734

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9812703A BRPI9812703B1 (pt) 1997-10-02 1998-10-02 método e aparelho para transmissão de corrente de dados criptografada

Country Status (19)

Country Link
US (1) USRE40334E1 (pt)
EP (1) EP1020080B1 (pt)
JP (1) JP2001519629A (pt)
KR (1) KR100672983B1 (pt)
CN (1) CN1171454C (pt)
AT (1) ATE273597T1 (pt)
AU (1) AU748518B2 (pt)
BR (1) BRPI9812703B1 (pt)
CA (1) CA2305644A1 (pt)
DE (1) DE69825611T2 (pt)
ES (1) ES2236937T3 (pt)
HR (1) HRP20000165A2 (pt)
HU (1) HUP0100232A3 (pt)
ID (1) ID23916A (pt)
IL (1) IL135413A0 (pt)
NO (1) NO325610B1 (pt)
PL (1) PL339572A1 (pt)
TR (1) TR200001560T2 (pt)
WO (1) WO1999018729A1 (pt)

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US7415110B1 (en) 1999-03-24 2008-08-19 Intel Corporation Method and apparatus for the generation of cryptographic keys
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US6920221B1 (en) 1999-08-29 2005-07-19 Intel Corporation Method and apparatus for protected exchange of status and secret values between a video source application and a video hardware interface
US7068786B1 (en) 1999-08-29 2006-06-27 Intel Corporation Dual use block/stream cipher
US6731758B1 (en) 1999-08-29 2004-05-04 Intel Corporation Digital video content transmission ciphering and deciphering method and apparatus
US6477252B1 (en) 1999-08-29 2002-11-05 Intel Corporation Digital video content transmission ciphering and deciphering method and apparatus
US6947558B1 (en) 1999-08-29 2005-09-20 Intel Corporation Stream cipher having a shuffle network combiner function
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EP1523188A1 (en) 2003-10-06 2005-04-13 Canal + Technologies Portable security module pairing
FR2865592A1 (fr) * 2004-01-28 2005-07-29 Noel Vogt Procede de diffusion securisee de programmes de television, systeme de diffusion, decodeur et support de donnees correspondants.
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KR100820810B1 (ko) * 2005-04-29 2008-04-10 엘지전자 주식회사 디지털 수신 시스템의 제한 수신 방법
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Also Published As

Publication number Publication date
CN1280742A (zh) 2001-01-17
WO1999018729A1 (en) 1999-04-15
TR200001560T2 (tr) 2000-12-21
ID23916A (id) 2000-05-25
BRPI9812703B1 (pt) 2015-12-15
DE69825611D1 (de) 2004-09-16
HUP0100232A2 (hu) 2001-05-28
HRP20000165A2 (en) 2001-04-30
KR20010030925A (ko) 2001-04-16
NO20001649L (no) 2000-06-02
ES2236937T3 (es) 2005-07-16
CA2305644A1 (en) 1999-04-15
CN1171454C (zh) 2004-10-13
ATE273597T1 (de) 2004-08-15
EP1020080A1 (en) 2000-07-19
AU9278298A (en) 1999-04-27
NO20001649D0 (no) 2000-03-30
HUP0100232A3 (en) 2001-10-29
USRE40334E1 (en) 2008-05-20
EP1020080B1 (en) 2004-08-11
JP2001519629A (ja) 2001-10-23
IL135413A0 (en) 2001-05-20
AU748518B2 (en) 2002-06-06
NO325610B1 (no) 2008-06-23
KR100672983B1 (ko) 2007-01-22
DE69825611T2 (de) 2005-06-30
PL339572A1 (en) 2000-12-18

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