MX2008000004A - Metodo y dispositivo de control de acceso a datos codificados. - Google Patents

Metodo y dispositivo de control de acceso a datos codificados.

Info

Publication number
MX2008000004A
MX2008000004A MX2008000004A MX2008000004A MX2008000004A MX 2008000004 A MX2008000004 A MX 2008000004A MX 2008000004 A MX2008000004 A MX 2008000004A MX 2008000004 A MX2008000004 A MX 2008000004A MX 2008000004 A MX2008000004 A MX 2008000004A
Authority
MX
Mexico
Prior art keywords
control
duration
encrypted data
message
error counter
Prior art date
Application number
MX2008000004A
Other languages
English (en)
Inventor
Henri Kudelski
Jimmy Cochard
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=35427934&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=MX2008000004(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Nagracard Sa filed Critical Nagracard Sa
Publication of MX2008000004A publication Critical patent/MX2008000004A/es

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
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44236—Monitoring of piracy processes or activities
    • 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
    • H04N21/43—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
    • 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
    • H04N7/167—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)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Virology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • Storage Device Security (AREA)
  • Communication Control (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La invencion se refiere a un metodo y un dispositivo de control de acceso a datos codificados por palabras de control (CW), siendo recibidas estas palabras de control por un modulo de seguridad en mensajes de control (ECM) y siendo devueltas a una unidad de explotacion (STB) de los datos codificados. El metodo comprende las siguientes etapas: recepcion de un primer mensaje de control (ECM1) que comprende por lo menos una palabra de control (CW) y una marca temporal (TS), la recepcion de un segundo mensaje de control (ECM2) posterior al primer mensaje de control (ECM1), comprendiendo este segundo mensaje por lo menos una palabra de control (CW) y una marca temporal (TS), la determinacion de una duracion correspondiente a la diferencia entre las marcas temporales (TS) de los dos mensajes de control consecutivos (ECM1, ECM2) cuando esta duracion es inferior a una duracion predefinida (CP), el incremento de un contador de errores (CE) cuando esta duracion es igual o superior a la citada duracion predefinida y una disminucion del contador de errores (CE), con el envio de la palabra de control (CW) a la unidad de explotacion (STB) despues de un tiempo de espera que depende del valor del contador de errores (CE).
MX2008000004A 2005-07-07 2006-07-06 Metodo y dispositivo de control de acceso a datos codificados. MX2008000004A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05106185A EP1742474A1 (fr) 2005-07-07 2005-07-07 Méthode et dispositif de contrôle d'accès à des données chiffrées
PCT/EP2006/063988 WO2007006735A1 (fr) 2005-07-07 2006-07-06 Methode et dispositif de controle d'acces a des donnees chiffrees

Publications (1)

Publication Number Publication Date
MX2008000004A true MX2008000004A (es) 2008-04-17

Family

ID=35427934

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2008000004A MX2008000004A (es) 2005-07-07 2006-07-06 Metodo y dispositivo de control de acceso a datos codificados.

Country Status (19)

Country Link
US (1) US7908491B2 (es)
EP (2) EP1742474A1 (es)
JP (1) JP2008545307A (es)
KR (1) KR101280640B1 (es)
CN (1) CN101218822B (es)
AT (1) ATE449510T1 (es)
AU (1) AU2006268683B2 (es)
BR (1) BRPI0615532A2 (es)
CA (1) CA2614107C (es)
DE (1) DE602006010554D1 (es)
ES (1) ES2336028T3 (es)
HK (1) HK1111022A1 (es)
IL (1) IL188334A (es)
MX (1) MX2008000004A (es)
PL (1) PL1900211T3 (es)
PT (1) PT1900211E (es)
RU (1) RU2409002C2 (es)
WO (1) WO2007006735A1 (es)
ZA (1) ZA200800078B (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL171963A0 (en) * 2005-11-14 2006-04-10 Nds Ltd Secure read-write storage device
EP2161931A1 (en) * 2008-09-09 2010-03-10 Nagravision S.A. Method for the allocation and management of subscriptions for the reception of broadcast products
FR2940691B1 (fr) * 2008-12-31 2011-02-25 Viaccess Sa Procedes de transmission, de reception et d'identification, processeur de securite et support d'enregistrement d'informations pour ces procedes.
EP2357783B1 (fr) * 2010-02-16 2013-06-05 STMicroelectronics (Rousset) SAS Procédé de détection d'un fonctionnement potentiellement suspect d'un dispositif électronique et dispositif électronique correspondant.
EP2405650A1 (en) 2010-07-09 2012-01-11 Nagravision S.A. A method for secure transfer of messages
FR2963191B1 (fr) * 2010-07-23 2012-12-07 Viaccess Sa Procede de detection d'une utilisation illicite d'un processeur de securite
KR101314417B1 (ko) * 2010-12-24 2013-10-04 한양대학교 에리카산학협력단 보안 칩셋을 이용한 콘텐츠 제공 및 재생 장치, 그리고 콘텐츠 제공 및 재생 방법
US9503785B2 (en) * 2011-06-22 2016-11-22 Nagrastar, Llc Anti-splitter violation conditional key change
US9392319B2 (en) 2013-03-15 2016-07-12 Nagrastar Llc Secure device profiling countermeasures
CN103971046B (zh) * 2014-03-31 2018-10-19 小米科技有限责任公司 一种解密的方法和装置
US9645731B2 (en) 2014-03-31 2017-05-09 Xiaomi Inc. Unlocking method and device using same
US9473463B2 (en) 2014-07-29 2016-10-18 Combined Conditional Access Development & Support, LLC Control word and associated entitlement control message caching and reuse

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69312828T2 (de) * 1992-09-14 1997-11-27 Thomson Multimedia Sa Zugriffsteuerungsverfahren
ID23380A (id) * 1997-03-21 2000-04-20 Canal & Siciete Anonyme Metode dan aparatus untuk mencegah akses yang curang dalam sistem akses bersyarat
TW412909B (en) * 1998-05-07 2000-11-21 Kudelski Sa Mechanism of matching between a receiver and a security module
US20050025312A1 (en) * 2002-01-14 2005-02-03 Rijkaert Albert Maria Arnold Distribution of encrypted information
US7486793B2 (en) * 2002-02-15 2009-02-03 Nagracard S.A. Invoicing management method of a service transmitted per time unit
FR2838587B1 (fr) * 2002-04-12 2004-06-25 Sagem Procede de gestion de droits d'acces a des services de television
EP1439697A1 (fr) * 2003-01-20 2004-07-21 Thomson Licensing S.A. Système de reception de données numériques diffusées comprenant un terminal numérique maítre, et au moins un terminal numérique esclave
EP1447976B1 (en) * 2003-02-12 2019-06-19 Irdeto B.V. Method of controlling descrambling of a plurality of program transport streams, receiver system and portable secure device
EP1680887A4 (en) * 2003-10-16 2013-06-26 Maxxian Technology Inc METHOD AND SYSTEM FOR DETECTING AND PREVENTING UNAUTHORIZED SIGNAL USE IN A CONTENT DELIVERY NETWORK
EP1575293A1 (en) * 2004-03-11 2005-09-14 Canal+ Technologies Dynamic smart card management

Also Published As

Publication number Publication date
ZA200800078B (en) 2009-09-30
DE602006010554D1 (de) 2009-12-31
US20080209232A1 (en) 2008-08-28
CA2614107C (en) 2013-11-19
BRPI0615532A2 (pt) 2019-05-07
IL188334A0 (en) 2008-04-13
HK1111022A1 (en) 2008-07-25
WO2007006735A1 (fr) 2007-01-18
PT1900211E (pt) 2010-02-24
EP1900211B1 (fr) 2009-11-18
JP2008545307A (ja) 2008-12-11
ES2336028T3 (es) 2010-04-07
CA2614107A1 (en) 2007-01-18
US7908491B2 (en) 2011-03-15
IL188334A (en) 2011-10-31
AU2006268683B2 (en) 2010-07-22
ATE449510T1 (de) 2009-12-15
CN101218822B (zh) 2010-11-03
RU2007148552A (ru) 2009-08-20
EP1742474A1 (fr) 2007-01-10
CN101218822A (zh) 2008-07-09
KR101280640B1 (ko) 2013-07-01
AU2006268683A1 (en) 2007-01-18
RU2409002C2 (ru) 2011-01-10
KR20080024520A (ko) 2008-03-18
EP1900211A1 (fr) 2008-03-19
PL1900211T3 (pl) 2010-04-30

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