HK1148629A1 - Critical packet partial encryption - Google Patents

Critical packet partial encryption

Info

Publication number
HK1148629A1
HK1148629A1 HK11102613.0A HK11102613A HK1148629A1 HK 1148629 A1 HK1148629 A1 HK 1148629A1 HK 11102613 A HK11102613 A HK 11102613A HK 1148629 A1 HK1148629 A1 HK 1148629A1
Authority
HK
Hong Kong
Prior art keywords
encryption
program
television
partial encryption
critical packet
Prior art date
Application number
HK11102613.0A
Other languages
English (en)
Inventor
Robert Allan Unger
Brant L Candelore
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 US10/038,217 external-priority patent/US7336787B2/en
Priority claimed from CA2405901A external-priority patent/CA2405901C/en
Application filed by Sony Electronics Inc filed Critical Sony Electronics Inc
Publication of HK1148629A1 publication Critical patent/HK1148629A1/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/23—Arrangements for conditional access to broadcast information or to broadcast-related services using cryptography, e.g. encryption, authentication, key distribution
    • 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
    • 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
    • H04N21/23608—Remultiplexing multiplex streams, e.g. involving 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]
    • H04N21/20—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
    • H04N21/2362—Generation or processing of Service Information [SI]
    • 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
    • H04N21/2365—Multiplexing of several 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
    • H04N21/434—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
    • H04N21/434—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
    • H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG 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]
    • H04N21/40—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
    • H04N21/4347—Demultiplexing of several 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]
    • H04N21/40—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
    • H04N21/44—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]
    • H04N21/40—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
    • H04N7/10—Adaptations for transmission by electrical cable
    • 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)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
HK11102613.0A 2002-01-02 2011-03-15 Critical packet partial encryption HK1148629A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/038,217 US7336787B2 (en) 2001-06-06 2002-01-02 Critical packet partial encryption
CA2405901A CA2405901C (en) 2001-10-26 2002-10-01 Critical packet partial encryption

Publications (1)

Publication Number Publication Date
HK1148629A1 true HK1148629A1 (en) 2011-09-09

Family

ID=25682870

Family Applications (1)

Application Number Title Priority Date Filing Date
HK11102613.0A HK1148629A1 (en) 2002-01-02 2011-03-15 Critical packet partial encryption

Country Status (8)

Country Link
EP (4) EP2346245B1 (ko)
JP (1) JP4448693B2 (ko)
KR (2) KR100988435B1 (ko)
CN (2) CN101902555B (ko)
AU (1) AU2002360604A1 (ko)
HK (1) HK1148629A1 (ko)
MX (1) MXPA04006249A (ko)
WO (1) WO2003061289A1 (ko)

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US7620180B2 (en) 2003-11-03 2009-11-17 Sony Corporation Preparation of content for multiple conditional access methods in video on demand
US20050105732A1 (en) * 2003-11-17 2005-05-19 Hutchings George T. Systems and methods for delivering pre-encrypted content to a subscriber terminal
WO2006010386A1 (en) * 2004-07-26 2006-02-02 Irdeto Access B.V. Method of partially scrambling a data stream
EP1648170A1 (fr) * 2004-10-15 2006-04-19 Nagracard S.A. Méthode de transmission de messages de gestion par un centre de gestion à destination d'une pluralité d'unités multimédia
JP2006211117A (ja) * 2005-01-26 2006-08-10 Sharp Corp コンテンツ保護システム
WO2008078390A1 (ja) 2006-12-26 2008-07-03 Fujitsu Limited データ圧縮装置およびデータ復元装置
WO2008084425A2 (en) 2007-01-11 2008-07-17 Nds Limited Processing video content
CA2728189C (en) * 2008-06-20 2017-03-28 Nagravision S.A. Method for controlling the use of a conditional access content and multimedia unit for implementing said method
JP2010068145A (ja) * 2008-09-09 2010-03-25 Oki Electric Ind Co Ltd データ送信装置、データ送信方法及びデータ送信プログラム、データ受信装置、データ受信方法及びデータ受信プログラム、並びに、データ通信システム
EP2341708B1 (en) 2010-01-05 2017-03-08 Irdeto B.V. Broadcasting variants of digital signals in a conditional access system
US8649514B2 (en) * 2010-12-28 2014-02-11 Sony Corporation On-demand switched content encryption
US9762937B2 (en) * 2014-08-07 2017-09-12 Sonic Ip, Inc. Systems and methods for protecting elementary bitstreams incorporating independently encoded tiles
CN105611318A (zh) * 2014-11-25 2016-05-25 上海天脉聚源文化传媒有限公司 一种视频加密播放方法及系统
GB2533279B (en) * 2014-12-08 2019-08-14 Gurulogic Microsystems Oy Secure media player
IL236440A0 (en) 2014-12-24 2015-04-30 Cisco Tech Inc Mixed media content
CN106549756B (zh) * 2015-09-21 2019-11-08 阿里巴巴集团控股有限公司 一种加密的方法及装置
EP3491774B1 (en) * 2016-09-23 2024-02-21 Apple Inc. Secure communication of network traffic
CN108322778B (zh) * 2018-02-09 2020-11-20 珠海迈科智能科技股份有限公司 一种提升dvb数据流加扰速度的方法及装置
CN108769742B (zh) * 2018-07-10 2021-06-01 天翼智慧家庭科技有限公司 一种iptv组播内容防篡改方法
CN110611830A (zh) * 2019-09-29 2019-12-24 腾讯科技（深圳）有限公司 一种视频处理方法、装置、设备及介质
CN112491532A (zh) * 2020-12-03 2021-03-12 珠海格力电器股份有限公司 视频数据的加密方法及装置、存储介质、电子设备
KR20230023359A (ko) 2021-08-10 2023-02-17 한화테크윈 주식회사 감시카메라 시스템

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US5341425A (en) 1992-12-02 1994-08-23 Scientific Atlanta, Inc. Methods and apparatus for uniquely encrypting data at a plurality of data transmission sites for transmission to a reception site
US5325432A (en) * 1993-02-04 1994-06-28 Motorola, Inc. Method for updating encryption key information in communication units
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
US5742680A (en) * 1995-11-13 1998-04-21 E Star, Inc. Set top box for receiving and decryption and descrambling a plurality of satellite television signals
US5805700A (en) * 1996-10-15 1998-09-08 Intel Corporation Policy based selective encryption of compressed video data
JPH10145773A (ja) * 1996-11-14 1998-05-29 Toshiba Corp 動画像データの暗号化方法およびその方法が適用されるコンピュータシステム並びに動画像データ符号化／復号化装置
SE513356C2 (sv) * 1998-11-20 2000-08-28 Ericsson Telefon Ab L M Förfarande och anordning för kryptering av bilder
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Also Published As

Publication number Publication date
CN101902555A (zh) 2010-12-01
EP2346245B1 (en) 2014-07-23
CN101902555B (zh) 2013-04-03
EP2352291A1 (en) 2011-08-03
EP1464174A4 (en) 2009-03-11
MXPA04006249A (es) 2004-09-27
EP2346245A1 (en) 2011-07-20
KR20080110940A (ko) 2008-12-19
EP2346246A1 (en) 2011-07-20
KR100988435B1 (ko) 2010-10-18
CN1623328B (zh) 2012-01-25
EP1464174B1 (en) 2012-02-08
WO2003061289A1 (en) 2003-07-24
KR20090115897A (ko) 2009-11-09
CN1623328A (zh) 2005-06-01
EP1464174A1 (en) 2004-10-06
JP2005515726A (ja) 2005-05-26
AU2002360604A1 (en) 2003-07-30
EP2352291B1 (en) 2014-07-23
EP2346246B1 (en) 2014-07-30
KR100993456B1 (ko) 2010-11-10
JP4448693B2 (ja) 2010-04-14

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20191215