BRPI0700415A - método e sistema fornecendo conteúdo misturado - Google Patents

método e sistema fornecendo conteúdo misturado

Info

Publication number
BRPI0700415A
BRPI0700415A BRPI0700415-0A BRPI0700415A BRPI0700415A BR PI0700415 A BRPI0700415 A BR PI0700415A BR PI0700415 A BRPI0700415 A BR PI0700415A BR PI0700415 A BRPI0700415 A BR PI0700415A
Authority
BR
Brazil
Prior art keywords
key
data
value
data units
providing
Prior art date
Application number
BRPI0700415-0A
Other languages
English (en)
Inventor
Andrew Augustine Wajs
Original Assignee
Irdeto Access Bv
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 Irdeto Access Bv filed Critical Irdeto Access Bv
Publication of BRPI0700415A publication Critical patent/BRPI0700415A/pt

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]
    • H04N21/60—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
    • 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
    • H04N21/44055—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 by partially decrypting, e.g. decrypting a video stream that has been partially encrypted
    • 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
    • H04N21/23476—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption by partially encrypting, e.g. encrypting the ending portion of a movie
    • 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
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/23614—Multiplexing of additional data and video streams
    • 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
    • H04N21/43—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
    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Storage Device Security (AREA)

Abstract

MéTODO E SISTEMA FORNECENDO CONTEúDO MISTURADO. A presente invenção refere-se a um método de fornecer dados misturados, inclui fornecer um fluxo (12; 22; 26) de unidades de dados, baseado em uma seqüência de unidades de dados íntegros pelo menos submetendo pelo menos parte de pelo menos algumas das unidades de dados íntegros a uma operação criptográfica empregando uma primeira chave de codificação que forma um par de chaves com uma primeira chave de decodificação correspondente, tal que uma primeira seção do fluxo de unidades de dados inclui unidades de dados incluindo criptogramas obtidas usando um primeiro valor da primeira chave de codificação, e tal que uma segunda seção inclui unidades de dados incluindo criptogramas obtidos usando um segundo valor da primeira chave de codificação, e associando unidades de dados com dados de identificação de estado de misturação (17, 18) para indicar um estado de misturação aplicável à unidade de dados associada, O método ainda inclui fornecer um fluxo de mensagens de chave, cada uma transportando pelo menos a informação de chave que permite um decodificador autorizado (33) obter um valor da primeira chave de decodificação, o fluxo de mensagens de chave e o fluxo de unidades de dados sendo sincronizados, associar cada unidade de dados incluindo um criptograma obtido usando qualquer valor da primeira chave de codificação com dados de identificação de estado de misturação incluindo um valor identificador associado com a primeira chave de decodificação, associar unidades de dados em uma terceira seção, separando as primeira e segunda seções, com dados de identificação de estado necessitando de um valor identificador associado com a primeira chave de decodificação, e fornecer em pelo menos uma mensagem de chave coincidindo com uma das primeira e terceiras seções, a informação de chave que permite um decodificador autorizado obter um valor da primeira chave de decodificação correspondendo com o segundo valor da primeira chave de codificação. A sujeição de pelo menos parte das unidades de dados íntegros para a operação criptográfica empregando a primeira chave de codificação é suspensa para cada unidade de dados na seqüência incluída na terceira seção.
BRPI0700415-0A 2006-02-15 2007-02-15 método e sistema fornecendo conteúdo misturado BRPI0700415A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06101704A EP1821538A1 (en) 2006-02-15 2006-02-15 Method and system providing scrambled content

Publications (1)

Publication Number Publication Date
BRPI0700415A true BRPI0700415A (pt) 2007-11-06

Family

ID=36848345

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0700415-0A BRPI0700415A (pt) 2006-02-15 2007-02-15 método e sistema fornecendo conteúdo misturado

Country Status (9)

Country Link
US (1) US8165293B2 (pt)
EP (1) EP1821538A1 (pt)
KR (1) KR20070082563A (pt)
CN (1) CN101034972B (pt)
AU (1) AU2007200636B2 (pt)
BR (1) BRPI0700415A (pt)
CA (1) CA2578710A1 (pt)
HK (1) HK1111531A1 (pt)
ZA (1) ZA200701114B (pt)

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US7949133B2 (en) * 2007-09-26 2011-05-24 Pinder Howard G Controlled cryptoperiod timing to reduce decoder processing load
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US9160988B2 (en) * 2009-03-09 2015-10-13 The Nielsen Company (Us), Llc System and method for payload encoding and decoding
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KR20100133184A (ko) * 2009-06-11 2010-12-21 삼성전자주식회사 고체 상태 드라이브 장치
CN101656866B (zh) * 2009-08-14 2012-05-23 中兴通讯股份有限公司 移动数字多媒体业务的接收方法及终端设备及接收装置
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CN104639313B (zh) * 2014-12-08 2018-03-09 中国科学院数据与通信保护研究教育中心 一种密码算法的检测方法
KR102056069B1 (ko) 2015-09-10 2020-01-22 매뉴팩처링 리소시스 인터내셔널 인코포레이티드 디스플레이 오류의 체계적 검출을 위한 시스템 및 방법
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Also Published As

Publication number Publication date
US20070189525A1 (en) 2007-08-16
KR20070082563A (ko) 2007-08-21
AU2007200636A1 (en) 2007-08-30
CA2578710A1 (en) 2007-08-15
ZA200701114B (en) 2009-07-29
HK1111531A1 (en) 2008-08-08
CN101034972A (zh) 2007-09-12
US8165293B2 (en) 2012-04-24
AU2007200636B2 (en) 2011-03-31
CN101034972B (zh) 2011-04-13
EP1821538A1 (en) 2007-08-22

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 7A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2257 DE 08/04/2014.

B15K Others concerning applications: alteration of classification

Ipc: H04N 21/4405 (2011.01), H04N 7/167 (2011.01), H04N