BRPI0516910A8 - Unidade de processamento de dados de áudio/vídeo digital e método de controle de acesso a tais dados - Google Patents
Unidade de processamento de dados de áudio/vídeo digital e método de controle de acesso a tais dadosInfo
- Publication number
- BRPI0516910A8 BRPI0516910A8 BRPI0516910A BRPI0516910A BRPI0516910A8 BR PI0516910 A8 BRPI0516910 A8 BR PI0516910A8 BR PI0516910 A BRPI0516910 A BR PI0516910A BR PI0516910 A BRPI0516910 A BR PI0516910A BR PI0516910 A8 BRPI0516910 A8 BR PI0516910A8
- Authority
- BR
- Brazil
- Prior art keywords
- unit
- video data
- encryption
- audio
- decryption
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 230000006837 decompression Effects 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 abstract 1
- 238000012795 verification Methods 0.000 abstract 1
Classifications
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- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/633—Control signals issued by server directed to the network components or client
- H04N21/6332—Control signals issued by server directed to the network components or client directed to client
- H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
-
- 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
- H04N21/41—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
- H04N21/43—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
- H04N21/4408—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 encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
-
- 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
- H04N21/4627—Rights management associated to the content
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
-
- 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
- H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
-
- 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
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
- H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Databases & Information Systems (AREA)
- Computer Networks & Wireless Communication (AREA)
- Storage Device Security (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
A presente invenção relaciona-se a uma unidade de processamento de dados de áudio/vídeo digital e um método de controle de acesso a tais dados. A unidade de processamento (UT) de dados de áudio/vídeo digital criptografados com palavras de controle (CW) provenientes de mensagens de controle (ECM) inclui uma unidade decifradora (DMX) dos dados de áudio/vídeo (DT), uma unidade de descompressão (MPEG), uma interface de entrada/saída dos dados de áudio/vídeo processados, e um meio de comunicação com um módulo de segurança (SM). As unidades de deciframento (DMX) e descompressão (MPEG) compreendem, respectivamente, uma unidade de criptografia (EC) e uma unidade de decriptação (DC), cada uma das quais é provida de pelo menos uma chave privada (Kec, Kdc) e uma chave comum de criptografia (Ki). [A invenção] é caracterizada pelo fato de compreender um meio para a transmissão segura da chave comum (Ki) e da palavra de controle (CW) extraída de uma mensagem de controle (ECM) entre o módulo de segurança (SM), a unidade decifradora (DMX) e a unidade de criptografia (EC), [sendo que o referido meio] utiliza a chave privada (Kec) da unidade de criptografia (EC). O deciframento, pela unidade decifradora (DMX), dos dados de áudio/vídeo (DT) com a palavra de controle (CW) e a recriptografia, pela unidade de criptografia (EC), desses dados decifrados com a chave comum (Ki) somente são possíveis após uma verificação bem sucedida da palavra de controle (CW) e da chave comum (Ki). Após a armazenagem temporária, os dados recriptografados de áudio/vídeo (DT) somente podem ser decriptados pela unidade de decriptação (DC) caso a chave comum (Ki) tenha sido positivamente verificada pelo módulo de segurança (SM), através de um número aleatório (AL) gerado pela unidade de decriptação (DC).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04106029A EP1662788A1 (fr) | 2004-11-24 | 2004-11-24 | Unité de traitement de données audio/vidéo numériques et méthode de contrôle d'accès audites données |
PCT/EP2005/056145 WO2006056572A2 (fr) | 2004-11-24 | 2005-11-22 | Unité de traitement de données audio/vidéo numériques et méthode de contrôle d'accès audites données |
Publications (2)
Publication Number | Publication Date |
---|---|
BRPI0516910A BRPI0516910A (pt) | 2008-09-23 |
BRPI0516910A8 true BRPI0516910A8 (pt) | 2018-05-22 |
Family
ID=34929924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0516910A BRPI0516910A8 (pt) | 2004-11-24 | 2005-11-22 | Unidade de processamento de dados de áudio/vídeo digital e método de controle de acesso a tais dados |
Country Status (14)
Country | Link |
---|---|
US (1) | US7697686B2 (pt) |
EP (2) | EP1662788A1 (pt) |
JP (1) | JP4878602B2 (pt) |
KR (1) | KR101172093B1 (pt) |
CN (1) | CN100559829C (pt) |
AR (1) | AR051243A1 (pt) |
BR (1) | BRPI0516910A8 (pt) |
CA (1) | CA2588460C (pt) |
ES (1) | ES2439230T3 (pt) |
HK (1) | HK1102252A1 (pt) |
PL (1) | PL1815681T3 (pt) |
PT (1) | PT1815681E (pt) |
TW (1) | TWI406569B (pt) |
WO (1) | WO2006056572A2 (pt) |
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CA2557505A1 (en) * | 2004-03-10 | 2005-10-20 | Nagracard S.A. | Method for securing a tv broadcast event |
EP1672831A1 (fr) * | 2004-12-16 | 2006-06-21 | Nagravision S.A. | Méthode de transmission de données numériques dans un réseau local |
EP1784016A1 (fr) * | 2005-11-03 | 2007-05-09 | Nagravision S.A. | Méthode de sécurisation de données échangées entre un dispositif de traitement multimédia et un module de sécurité |
-
2004
- 2004-11-24 EP EP04106029A patent/EP1662788A1/fr not_active Withdrawn
-
2005
- 2005-11-16 TW TW094140324A patent/TWI406569B/zh not_active IP Right Cessation
- 2005-11-22 AR ARP050104882A patent/AR051243A1/es unknown
- 2005-11-22 ES ES05817128.1T patent/ES2439230T3/es active Active
- 2005-11-22 EP EP05817128.1A patent/EP1815681B1/fr not_active Not-in-force
- 2005-11-22 US US11/284,101 patent/US7697686B2/en active Active
- 2005-11-22 CA CA2588460A patent/CA2588460C/en not_active Expired - Fee Related
- 2005-11-22 KR KR1020077011711A patent/KR101172093B1/ko active IP Right Grant
- 2005-11-22 BR BRPI0516910A patent/BRPI0516910A8/pt active Search and Examination
- 2005-11-22 JP JP2007541979A patent/JP4878602B2/ja not_active Expired - Fee Related
- 2005-11-22 PL PL05817128T patent/PL1815681T3/pl unknown
- 2005-11-22 PT PT58171281T patent/PT1815681E/pt unknown
- 2005-11-22 WO PCT/EP2005/056145 patent/WO2006056572A2/fr active Application Filing
- 2005-11-24 CN CNB2005101268634A patent/CN100559829C/zh not_active Expired - Fee Related
-
2007
- 2007-09-05 HK HK07109672.9A patent/HK1102252A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TWI406569B (zh) | 2013-08-21 |
EP1815681A2 (fr) | 2007-08-08 |
AR051243A1 (es) | 2006-12-27 |
WO2006056572A3 (fr) | 2007-05-31 |
JP2008521306A (ja) | 2008-06-19 |
US20060109982A1 (en) | 2006-05-25 |
BRPI0516910A (pt) | 2008-09-23 |
ES2439230T3 (es) | 2014-01-22 |
EP1815681B1 (fr) | 2013-10-02 |
KR101172093B1 (ko) | 2012-08-10 |
KR20070090892A (ko) | 2007-09-06 |
CN100559829C (zh) | 2009-11-11 |
TW200625958A (en) | 2006-07-16 |
US7697686B2 (en) | 2010-04-13 |
HK1102252A1 (en) | 2007-11-09 |
WO2006056572A2 (fr) | 2006-06-01 |
CA2588460C (en) | 2013-07-30 |
JP4878602B2 (ja) | 2012-02-15 |
PT1815681E (pt) | 2013-12-19 |
CA2588460A1 (en) | 2006-06-01 |
PL1815681T3 (pl) | 2014-03-31 |
EP1662788A1 (fr) | 2006-05-31 |
CN1780361A (zh) | 2006-05-31 |
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B15K | Others concerning applications: alteration of classification |
Ipc: H04N 21/266 (2011.01), H04N 21/418 (2011.01), H04N |
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B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
B11D | Dismissal acc. art. 38, par 2 of ipl - failure to pay fee after grant in time |