MXPA04006248A - Encripcion parcial por division de tiempo. - Google Patents

Encripcion parcial por division de tiempo.

Info

Publication number
MXPA04006248A
MXPA04006248A MXPA04006248A MXPA04006248A MXPA04006248A MX PA04006248 A MXPA04006248 A MX PA04006248A MX PA04006248 A MXPA04006248 A MX PA04006248A MX PA04006248 A MXPA04006248 A MX PA04006248A MX PA04006248 A MXPA04006248 A MX PA04006248A
Authority
MX
Mexico
Prior art keywords
encryption
program
programs
permitting
time division
Prior art date
Application number
MXPA04006248A
Other languages
English (en)
Inventor
Allan Unger Robert
Original Assignee
Sony Electronics Inc
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
Priority claimed from US10/038,032 external-priority patent/US7139398B2/en
Priority claimed from CA 2405902 external-priority patent/CA2405902C/en
Application filed by Sony Electronics Inc filed Critical Sony Electronics Inc
Publication of MXPA04006248A publication Critical patent/MXPA04006248A/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
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • 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
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • 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
    • H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
    • H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
    • H04N21/23897—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption by partially encrypting, e.g. encrypting only 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]
    • H04N21/40—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
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4344—Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers
    • 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
    • H04N21/43607—Interfacing a plurality of external cards, e.g. through a DVB Common Interface [DVB-CI]
    • 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
    • H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
    • H04N21/43853—Multiplex stream processing, e.g. multiplex stream decrypting involving multiplex stream decryption
    • H04N21/43856—Multiplex stream processing, e.g. multiplex stream decrypting involving multiplex stream decryption by partial decryption, e.g. decrypting a multiplex stream that has been partially encrypted
    • 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
    • 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)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Se presenta un arreglo de encripcion para encripcion multiple de programas de television. Un sistema (100) de conformidad con modalidades de la presente invencion encripta en forma multiple solamente una parte de los datos requeridos para la presentacion completa de un programa de television para permitir la co-existencia de multiples sistemas de encripcion de acceso condicional (118, 124) asociados con multiples decodificadores de fabricante (36, 136) en un solo sistema. En una modalidad, una tecnica de fraccionamiento de tiempo se utiliza para encriptar porciones de un programa con base en un tiempo asignado. Mediante la encripcion de solamente una parte del programa, se consume mucho menos ancho de banda que en la alternativa de encripcion multiple de encriptar todos los datos de programa, permitiendo asi transportar un gran numero de programas en el mismo ancho de banda mientras se permite la co-existencia de varios sistemas de acceso condicional en un sistema de CATV unico (32).
MXPA04006248A 2002-01-02 2002-12-13 Encripcion parcial por division de tiempo. MXPA04006248A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/038,032 US7139398B2 (en) 2001-06-06 2002-01-02 Time division partial encryption
CA 2405902 CA2405902C (en) 2001-10-26 2002-10-01 Time division partial encryption
PCT/US2002/040054 WO2003059039A2 (en) 2002-01-02 2002-12-13 Time division partial encryption

Publications (1)

Publication Number Publication Date
MXPA04006248A true MXPA04006248A (es) 2004-09-27

Family

ID=25682871

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA04006248A MXPA04006248A (es) 2002-01-02 2002-12-13 Encripcion parcial por division de tiempo.

Country Status (6)

Country Link
EP (1) EP1468561B1 (es)
JP (1) JP4446742B2 (es)
CN (1) CN100420303C (es)
AU (1) AU2002360605A1 (es)
MX (1) MXPA04006248A (es)
WO (1) WO2003059039A2 (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2404467A (en) 2003-07-31 2005-02-02 Sony Uk Ltd Access control for digital content
US8379864B2 (en) * 2004-07-09 2013-02-19 Nokia Corporation Software plug-in framework to modify decryption methods in terminals
US20060018470A1 (en) * 2004-07-09 2006-01-26 Nokia Corporation Managing traffic keys during a multi-media session
KR101059181B1 (ko) * 2006-05-16 2011-08-25 케이디디아이 가부시키가이샤 암호화 장치, 복호 장치, 라이센스 발행 장치, 및 콘텐츠 데이터 생성 방법
WO2008084425A2 (en) 2007-01-11 2008-07-17 Nds Limited Processing video content
US8068608B2 (en) * 2007-12-17 2011-11-29 Broadcom Corporation Video processing system for scrambling video streams with dependent portions and methods for use therewith
US7965839B2 (en) * 2008-02-19 2011-06-21 Sony Corporation Encryption system for satellite delivered television
WO2013100986A1 (en) * 2011-12-28 2013-07-04 Intel Corporation Systems and methods for integrated metadata insertion in a video encoding system
JP2013150147A (ja) * 2012-01-19 2013-08-01 Nippon Hoso Kyokai <Nhk> 暗号化装置、復号装置、暗号化プログラム、および復号プログラム
EP2665032A1 (en) * 2012-05-14 2013-11-20 Thomson Licensing Methods and devices for 3d object protection using surface subdivision
US9516000B2 (en) 2015-03-27 2016-12-06 International Business Machines Corporation Runtime instantiation of broadcast encryption schemes
CN109327711A (zh) * 2018-10-22 2019-02-12 高斯贝尔数码科技股份有限公司 音视频的内容格式分层结构、加密方法、解密方法及终端

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6292568B1 (en) * 1966-12-16 2001-09-18 Scientific-Atlanta, Inc. Representing entitlements to service in a conditional access system
MY108367A (en) * 1991-09-30 1996-09-30 Thomson Consumer Electronics S A Method and apparatus for secure transmisson of video signals.
US5420866A (en) * 1994-03-29 1995-05-30 Scientific-Atlanta, Inc. Methods for providing conditional access information to decoders in a packet-based multiplexed communications system
FR2718594B1 (fr) * 1994-04-06 1996-04-26 France Telecom Procédé de diffusion de programmes à accès conditionnel progressif et à séparation du flux d'information.
WO1997024832A1 (en) * 1995-12-29 1997-07-10 Scientific-Atlanta, Inc. Method and apparatus for providing conditional access in connection-oriented, interactive networks with a multiplicity of service providers
US6011849A (en) * 1997-08-28 2000-01-04 Syndata Technologies, Inc. Encryption-based selection system for steganography
SE513356C2 (sv) * 1998-11-20 2000-08-28 Ericsson Telefon Ab L M Förfarande och anordning för kryptering av bilder

Also Published As

Publication number Publication date
CN1623326A (zh) 2005-06-01
WO2003059039A2 (en) 2003-07-24
WO2003059039A3 (en) 2003-11-20
EP1468561A4 (en) 2009-12-30
EP1468561A2 (en) 2004-10-20
AU2002360605A8 (en) 2003-07-30
JP2005514886A (ja) 2005-05-19
AU2002360605A1 (en) 2003-07-30
CN100420303C (zh) 2008-09-17
EP1468561B1 (en) 2014-04-30
JP4446742B2 (ja) 2010-04-07

Similar Documents

Publication Publication Date Title
EP2343890A3 (en) Partial encryption and PID mapping
MXPA04006400A (es) Cifrado parcial de flujos elementales.
EP2343891A3 (en) Partial Encryption and PID mapping
MXPA04006442A (es) Encriptacion parcial y mapeo de pid.
HK1148629A1 (en) Critical packet partial encryption
US7787622B2 (en) Efficient distribution of encrypted content for multiple content access systems
US8139768B2 (en) Encrypting content in a tuner device and analyzing content protection policy
KR20030007798A (ko) 암호화된 억세스 제어 정보를 전송하기 위한 시스템
US10057641B2 (en) Method to upgrade content encryption
US20030196113A1 (en) System and method for providing a secure environment for performing conditional access functions for a set top box
US7062048B2 (en) Apparatus and method for single encryption with multiple authorization of distributed content data
MXPA04006248A (es) Encripcion parcial por division de tiempo.
CN1909450B (zh) 用于处理信息的方法和设备
WO2003003587A3 (en) Conditional access system
US20070258596A1 (en) Distribution of broadcast content for remote decryption and viewing
CA2244015A1 (en) Cryptographic method and apparatus for restricting access to transmitted programming content using extended headers
EP0843479A1 (en) Process for data certification by scrambling and certification system using such a process
CA2272922A1 (en) A decoding apparatus/method and data format for processing and storing encrypted video data
WO2002058398A3 (en) System for securely delivering pre-encrypted content on demand with access control
MX2014009928A (es) Ciclo de encriptacion de tarjeta inteligente.
CN101416483A (zh) 传输流的消除抖动
WO2009108518A4 (en) Encryption system for satellite delivered television
EP2259544B1 (en) Controlling the validity period of a decryption key
GB2509759A (en) Receiving audio/visual content-related non-viewing information via unused transmission channels
KR20050026969A (ko) 암호화된 디지털 신호들의 저장

Legal Events

Date Code Title Description
FG Grant or registration