MX2007013211A - Dispositivo y metodo de procesamiento de una corriente de datos cifrados en un sistema criptografico. - Google Patents

Dispositivo y metodo de procesamiento de una corriente de datos cifrados en un sistema criptografico.

Info

Publication number
MX2007013211A
MX2007013211A MX2007013211A MX2007013211A MX2007013211A MX 2007013211 A MX2007013211 A MX 2007013211A MX 2007013211 A MX2007013211 A MX 2007013211A MX 2007013211 A MX2007013211 A MX 2007013211A MX 2007013211 A MX2007013211 A MX 2007013211A
Authority
MX
Mexico
Prior art keywords
data stream
encrypted data
processing
reproduction
cryptographic system
Prior art date
Application number
MX2007013211A
Other languages
English (en)
Inventor
Eric Moors
Roland Manders
Albert Rijckaert
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of MX2007013211A publication Critical patent/MX2007013211A/es

Links

Classifications

    • 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
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/783—Adaptations for reproducing at a rate different from the recording rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • 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
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2387—Stream processing in response to a playback request from an end-user, e.g. for trick-play
    • 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
    • H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
    • H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
    • 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
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • 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]
    • H04N21/60—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 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/658—Transmission by the client directed to the server
    • H04N21/6587—Control parameters, e.g. trick play commands, viewpoint selection
    • 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
    • H04N5/93—Regeneration of the television signal or of selected parts thereof
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La presente invencion se refiere a un dispositivo (3200) para el procesamiento de una corriente de datos cifrados (3201) en un sistema criptografico, en el cual los datos de descifrado (3204) son provistos para descifrar cada segmento (3202) de la corriente de datos cifrados (3201) para la reproduccion de la corriente de datos descifrados, en donde el dispositivo (3200) comprende una primera unidad de determinacion (3209) para determinar, en el caso del cambio desde un primer modo de reproduccion (1501) de reproduccion de la corriente de los datos (3201) hasta un segundo modo de reproduccion (1502) de la reproduccion de la corriente de los datos (3201), una posicion actual de la reproduccion dentro de la corriente de los datos, y una segunda unidad de determinacion (3210) para determinar una posicion de partida para el inicio de la reproduccion en el segundo modo de reproduccion (1502) basado en la posicion actual determinada.
MX2007013211A 2005-04-26 2006-04-25 Dispositivo y metodo de procesamiento de una corriente de datos cifrados en un sistema criptografico. MX2007013211A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05103394 2005-04-26
PCT/IB2006/051278 WO2006114760A2 (en) 2005-04-26 2006-04-25 A device for and a method of processing an encrypted data stream in a cryptographic system

Publications (1)

Publication Number Publication Date
MX2007013211A true MX2007013211A (es) 2008-01-16

Family

ID=37072564

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2007013211A MX2007013211A (es) 2005-04-26 2006-04-25 Dispositivo y metodo de procesamiento de una corriente de datos cifrados en un sistema criptografico.

Country Status (9)

Country Link
US (1) US20080212774A1 (es)
EP (1) EP1878233A2 (es)
JP (1) JP2008539639A (es)
KR (1) KR20080005569A (es)
CN (1) CN101167358A (es)
BR (1) BRPI0609562A2 (es)
MX (1) MX2007013211A (es)
RU (1) RU2007143549A (es)
WO (1) WO2006114760A2 (es)

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US7929698B2 (en) * 2007-06-15 2011-04-19 Sony Corporation Selective encryption to enable trick play with enhanced security
US8265168B1 (en) * 2008-02-01 2012-09-11 Zenverge, Inc. Providing trick mode for video stream transmitted over network
PT2160014E (pt) * 2008-08-27 2011-08-25 Novabase Digital Tv Technologies Gmbh Descodificador de televisão digital modular
EP2192773A1 (en) * 2008-12-01 2010-06-02 Irdeto Access B.V. Content decryption device and encryption system using an additional key layer
US10057641B2 (en) * 2009-03-25 2018-08-21 Sony Corporation Method to upgrade content encryption
JP5045956B2 (ja) * 2009-04-16 2012-10-10 Ｎｅｃシステムテクノロジー株式会社 スクランブル装置、スクランブル方法及びプログラム
US8782267B2 (en) * 2009-05-29 2014-07-15 Comcast Cable Communications, Llc Methods, systems, devices, and computer-readable media for delivering additional content using a multicast streaming
WO2011140288A1 (en) * 2010-05-04 2011-11-10 Verimatrix, Inc. Device authentication for secure key retrieval for streaming media players
US8687807B2 (en) 2011-01-26 2014-04-01 Nagrastar, L.L.C. Cascading dynamic crypto periods
EP2498494A1 (en) * 2011-03-11 2012-09-12 Thomson Licensing Decoder and method at the decoder for synchronizing the rendering of contents received through different networks
CN105049941B (zh) * 2015-06-24 2017-06-30 广州酷狗计算机科技有限公司 一种多媒体文件的处理方法及装置
EP4106335A3 (en) 2015-12-16 2023-04-19 Roku, Inc. Dynamic video overlays
US10552585B2 (en) * 2016-12-14 2020-02-04 Microsoft Technology Licensing, Llc Encoding optimization for obfuscated media
KR102484754B1 (ko) * 2017-12-08 2023-01-06 삼성전자주식회사 영상처리장치 및 그 제어방법
EP3664396A1 (en) * 2018-12-03 2020-06-10 Nagravision SA Securely transmitting data in a data stream
CN115914695A (zh) * 2022-03-30 2023-04-04 青岛海信宽带多媒体技术有限公司 智能机顶盒及节目播放进度调整的位置定位方法

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EP0896718A2 (en) * 1997-02-03 1999-02-17 Koninklijke Philips Electronics N.V. Recording of trick play signals on a record carrier
US6219381B1 (en) * 1997-05-26 2001-04-17 Kabushiki Kaisha Toshiba Image processing apparatus and method for realizing trick play
BR9906523A (pt) * 1998-06-11 2000-07-25 Koninkl Philips Electonics N V Aparelho e processo para gravar um sinal de informação de vìdeo digital em um portador de gravação, e, portador de gravação
US8380041B2 (en) * 1998-07-30 2013-02-19 Tivo Inc. Transportable digital video recorder system
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JP2002016919A (ja) * 2000-04-28 2002-01-18 Sony Corp 情報送信方法及び装置、情報受信方法及び装置、情報記録方法及び装置、並びに、情報記録再生方法及び装置
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JP2006513591A (ja) * 2002-06-12 2006-04-20 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 条件付アクセス装置における暗号化されたデータのトリックプレイ
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Also Published As

Publication number Publication date
CN101167358A (zh) 2008-04-23
EP1878233A2 (en) 2008-01-16
WO2006114760A2 (en) 2006-11-02
WO2006114760A3 (en) 2007-01-18
JP2008539639A (ja) 2008-11-13
BRPI0609562A2 (pt) 2011-10-18
US20080212774A1 (en) 2008-09-04
RU2007143549A (ru) 2009-06-10
KR20080005569A (ko) 2008-01-14

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