JP4709548B2 - コンテンツ再生装置及びトリックモード再生システム - Google Patents

コンテンツ再生装置及びトリックモード再生システム Download PDF

Info

Publication number
JP4709548B2
JP4709548B2 JP2004541559A JP2004541559A JP4709548B2 JP 4709548 B2 JP4709548 B2 JP 4709548B2 JP 2004541559 A JP2004541559 A JP 2004541559A JP 2004541559 A JP2004541559 A JP 2004541559A JP 4709548 B2 JP4709548 B2 JP 4709548B2
Authority
JP
Japan
Prior art keywords
key
content
packet
transport stream
playback
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP2004541559A
Other languages
English (en)
Japanese (ja)
Other versions
JP2006501764A (ja
JP2006501764A5 (enExample
Inventor
アンガー、ロバート、アラン
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of JP2006501764A publication Critical patent/JP2006501764A/ja
Publication of JP2006501764A5 publication Critical patent/JP2006501764A5/ja
Application granted granted Critical
Publication of JP4709548B2 publication Critical patent/JP4709548B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • 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
    • H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G11B20/00485—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
    • G11B20/00492—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted
    • G11B20/00507—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted wherein consecutive physical data units of the record carrier are encrypted with separate encryption keys, e.g. the key changes on a cluster or sector basis
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0071—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a purchase action
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H04L63/0457—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply dynamic encryption, e.g. stream encryption
    • 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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • 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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • 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
    • H04N21/236—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]
    • H04N21/40—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
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4334—Recording operations
    • 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]
    • H04N21/40—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
    • 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
    • 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
    • H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys
    • 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
    • H04N5/91—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
    • 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)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Databases & Information Systems (AREA)
  • Computing Systems (AREA)
  • Software Systems (AREA)
  • Technology Law (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
JP2004541559A 2002-09-30 2003-09-16 コンテンツ再生装置及びトリックモード再生システム Expired - Fee Related JP4709548B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/262,465 2002-09-30
US10/262,465 US7020287B2 (en) 2002-09-30 2002-09-30 Method and system for key insertion for stored encrypted content
PCT/US2003/029159 WO2004032410A1 (en) 2002-09-30 2003-09-16 Method and system for key insertion for stored encrypted content

Publications (3)

Publication Number Publication Date
JP2006501764A JP2006501764A (ja) 2006-01-12
JP2006501764A5 JP2006501764A5 (enExample) 2006-11-02
JP4709548B2 true JP4709548B2 (ja) 2011-06-22

Family

ID=32030224

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004541559A Expired - Fee Related JP4709548B2 (ja) 2002-09-30 2003-09-16 コンテンツ再生装置及びトリックモード再生システム

Country Status (8)

Country Link
US (2) US7020287B2 (enExample)
EP (1) EP1547300B1 (enExample)
JP (1) JP4709548B2 (enExample)
KR (1) KR101013716B1 (enExample)
CN (1) CN100555932C (enExample)
AU (1) AU2003270707A1 (enExample)
CA (1) CA2497862C (enExample)
WO (1) WO2004032410A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9754694B2 (en) 2010-02-01 2017-09-05 Siemens Aktiengesellschaft Method and device for producing a 99mTc reaction product

Families Citing this family (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1447983B1 (en) * 2003-02-11 2009-12-30 Thomson Licensing Method of recording scrambled digital data, storage medium and method of reading such data
US6980650B2 (en) * 2003-10-27 2005-12-27 Nds Limited System for providing keys
CN1879343A (zh) * 2003-11-14 2006-12-13 松下电器产业株式会社 数据处理装置
US7519274B2 (en) 2003-12-08 2009-04-14 Divx, Inc. File format for multiple track digital data
US8472792B2 (en) 2003-12-08 2013-06-25 Divx, Llc Multimedia distribution system
US20050152553A1 (en) * 2004-01-14 2005-07-14 Takuya Kosugi Method of synchronizing dynamic decryption keys and matching content protected data in a real time environment
US20060018470A1 (en) * 2004-07-09 2006-01-26 Nokia Corporation Managing traffic keys during a multi-media session
US20060034321A1 (en) * 2004-07-09 2006-02-16 Nokia Corporation Method for receiving a time slice burst of data
US8379864B2 (en) * 2004-07-09 2013-02-19 Nokia Corporation Software plug-in framework to modify decryption methods in terminals
US20060031873A1 (en) * 2004-08-09 2006-02-09 Comcast Cable Holdings, Llc System and method for reduced hierarchy key management
US20060041741A1 (en) * 2004-08-23 2006-02-23 Nokia Corporation Systems and methods for IP level decryption
US20080015999A1 (en) * 2005-02-04 2008-01-17 Widevine Technologies, Inc. Securely ingesting encrypted content into content servers
EP1908284A2 (en) * 2005-04-26 2008-04-09 Koninklijke Philips Electronics N.V. A device for and a method of processing an encrypted data stream for trick play
US8165302B2 (en) * 2005-06-07 2012-04-24 Sony Corporation Key table and authorization table management
WO2007072242A1 (en) * 2005-12-23 2007-06-28 Koninklijke Philips Electronics N.V. A device for and a method of processing an encrypted data stream
WO2007072257A1 (en) * 2005-12-23 2007-06-28 Koninklijke Philips Electronics N.V. A device for and a method of processing an encrypted data stream
US8526612B2 (en) * 2006-01-06 2013-09-03 Google Inc. Selective and persistent application level encryption for video provided to a client
JP2007201973A (ja) * 2006-01-30 2007-08-09 Kyocera Corp データ送受信システム、暗号化情報共有方法、データ送信装置、及びデータ受信装置
EP1999883A4 (en) 2006-03-14 2013-03-06 Divx Llc SCHEME FOR THE MANAGEMENT OF UNITED DIGITAL RIGHTS, INCLUDING TRUSTWORTHY SYSTEMS
EP1863285A1 (fr) * 2006-05-29 2007-12-05 Nagra France Sas Procédé de traitement de messages de contrôle d'accès
WO2008086313A1 (en) 2007-01-05 2008-07-17 Divx, Inc. Video distribution system including progressive playback
CN101325480B (zh) * 2007-06-13 2012-05-23 中兴通讯股份有限公司 基于复用子帧的加扰控制方法及装置
DE102007041145A1 (de) * 2007-08-30 2009-03-05 Siemens Enterprise Communications Gmbh & Co. Kg Verfahren zum Analysieren von gleichzeitig übertragenen, verschlüsselten Datenströmen
KR20100106327A (ko) 2007-11-16 2010-10-01 디브이엑스, 인크. 멀티미디어 파일을 위한 계층적 및 감소된 인덱스 구조
KR20090072510A (ko) * 2007-12-28 2009-07-02 삼성전자주식회사 디스플레이장치 및 그 제어방법
CA2782825C (en) 2009-12-04 2016-04-26 Divx, Llc Elementary bitstream cryptographic material transport systems and methods
US9247312B2 (en) 2011-01-05 2016-01-26 Sonic Ip, Inc. Systems and methods for encoding source media in matroska container files for adaptive bitrate streaming using hypertext transfer protocol
US8812662B2 (en) 2011-06-29 2014-08-19 Sonic Ip, Inc. Systems and methods for estimating available bandwidth and performing initial stream selection when streaming content
US9467708B2 (en) 2011-08-30 2016-10-11 Sonic Ip, Inc. Selection of resolutions for seamless resolution switching of multimedia content
CN103875248B (zh) 2011-08-30 2018-09-07 帝威视有限公司 用于编码和流处理通过使用多个最大比特率级别编码的视频的系统和方法
US8799647B2 (en) 2011-08-31 2014-08-05 Sonic Ip, Inc. Systems and methods for application identification
US8787570B2 (en) 2011-08-31 2014-07-22 Sonic Ip, Inc. Systems and methods for automatically genenrating top level index files
US8909922B2 (en) 2011-09-01 2014-12-09 Sonic Ip, Inc. Systems and methods for playing back alternative streams of protected content protected using common cryptographic information
US8964977B2 (en) 2011-09-01 2015-02-24 Sonic Ip, Inc. Systems and methods for saving encoded media streamed using adaptive bitrate streaming
US8918908B2 (en) 2012-01-06 2014-12-23 Sonic Ip, Inc. Systems and methods for accessing digital content using electronic tickets and ticket tokens
US9936267B2 (en) 2012-08-31 2018-04-03 Divx Cf Holdings Llc System and method for decreasing an initial buffering period of an adaptive streaming system
US9191457B2 (en) 2012-12-31 2015-11-17 Sonic Ip, Inc. Systems, methods, and media for controlling delivery of content
US9313510B2 (en) 2012-12-31 2016-04-12 Sonic Ip, Inc. Use of objective quality measures of streamed content to reduce streaming bandwidth
US9906785B2 (en) 2013-03-15 2018-02-27 Sonic Ip, Inc. Systems, methods, and media for transcoding video data according to encoding parameters indicated by received metadata
US10397292B2 (en) 2013-03-15 2019-08-27 Divx, Llc Systems, methods, and media for delivery of content
US9094737B2 (en) 2013-05-30 2015-07-28 Sonic Ip, Inc. Network video streaming with trick play based on separate trick play files
US9380099B2 (en) 2013-05-31 2016-06-28 Sonic Ip, Inc. Synchronizing multiple over the top streaming clients
US9100687B2 (en) 2013-05-31 2015-08-04 Sonic Ip, Inc. Playback synchronization across playback devices
US9386067B2 (en) 2013-12-30 2016-07-05 Sonic Ip, Inc. Systems and methods for playing adaptive bitrate streaming content by multicast
US9866878B2 (en) 2014-04-05 2018-01-09 Sonic Ip, Inc. Systems and methods for encoding and playing back video at different frame rates using enhancement layers
KR102306641B1 (ko) 2014-08-07 2021-09-30 디빅스, 엘엘씨 독립적으로 인코딩된 타일을 포함한 기본 비트스트림을 보호하는 시스템 및 방법
CN104244068B (zh) * 2014-09-04 2018-05-01 深圳市九洲电器有限公司 一种录制节目回放处理方法及系统
ES2746954T3 (es) 2015-01-06 2020-03-09 Divx Llc Sistemas y métodos para codificar y compartir contenido entre dispositivos
JP6588987B2 (ja) 2015-02-27 2019-10-09 ソニック アイピー， インコーポレイテッド ライブビデオエンコーディングおよびストリーミングにおけるフレーム複写およびフレーム拡張のためのシステムおよび方法
US10075292B2 (en) 2016-03-30 2018-09-11 Divx, Llc Systems and methods for quick start-up of playback
US10231001B2 (en) 2016-05-24 2019-03-12 Divx, Llc Systems and methods for providing audio content during trick-play playback
US10129574B2 (en) 2016-05-24 2018-11-13 Divx, Llc Systems and methods for providing variable speeds in a trick-play mode
US10148989B2 (en) 2016-06-15 2018-12-04 Divx, Llc Systems and methods for encoding video content
US12244660B2 (en) 2016-09-08 2025-03-04 Divx, Llc Systems and methods for adaptive buffering for digital video streaming
US10498795B2 (en) 2017-02-17 2019-12-03 Divx, Llc Systems and methods for adaptive switching between multiple content delivery networks during adaptive bitrate streaming
EP3942437B1 (en) 2019-03-21 2024-01-10 DivX, LLC Systems and methods for multimedia swarms
CN115994366A (zh) * 2021-10-20 2023-04-21 华为技术有限公司 网络设备和数据解密方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07288798A (ja) * 1994-04-15 1995-10-31 Mitsubishi Electric Corp ディジタル録画記録再生装置及び再生装置並びにｔｖ受信装置
US6157719A (en) * 1995-04-03 2000-12-05 Scientific-Atlanta, Inc. Conditional access system
US6480664B1 (en) * 1995-06-07 2002-11-12 Hou-Chun Ting Trick mode VTR which generates trick play data from a stream of images containing intra-pictures and predictive pictures and selects specific DCT coefficients for intra-pictures
JPH08340541A (ja) * 1995-06-12 1996-12-24 Sony Corp デジタルデータの伝送方法、伝送装置、記録方法、記録装置、再生方法、再生装置、記録再生方法及び記録再生装置
US5825876A (en) 1995-12-04 1998-10-20 Northern Telecom Time based availability to content of a storage medium
JP3093678B2 (ja) * 1996-06-28 2000-10-03 株式会社東芝 暗号化方法、復号方法、記録再生装置、復号装置、復号化ユニット装置及び記録媒体の製造方法
EP0858184A3 (en) 1997-02-07 1999-09-01 Nds Limited Digital recording protection system
JP3604264B2 (ja) 1997-10-06 2004-12-22 株式会社東芝 発信者用端末装置及びネットワークシステム並びに発信情報監視方法
US6633564B1 (en) * 1999-09-22 2003-10-14 Nortel Networks Limited Method and apparatus for inserting packets into a data stream
US20010042048A1 (en) * 2000-05-15 2001-11-15 The Regents Of The University Of California Method and apparatus for electronically distributing audio recordings
US8140859B1 (en) * 2000-07-21 2012-03-20 The Directv Group, Inc. Secure storage and replay of media programs using a hard-paired receiver and storage device
US6959090B1 (en) * 2000-11-20 2005-10-25 Nokia Corporation Content Protection scheme for a digital recording device
BRPI0204473B1 (pt) * 2001-03-12 2017-11-28 Koninklijke Philips N. V. A reproductive device for reproducing a content item stored in a storage media

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9754694B2 (en) 2010-02-01 2017-09-05 Siemens Aktiengesellschaft Method and device for producing a 99mTc reaction product

Also Published As

Publication number Publication date
CA2497862A1 (en) 2004-04-15
AU2003270707A1 (en) 2004-04-23
EP1547300B1 (en) 2018-11-21
CN100555932C (zh) 2009-10-28
US20070064951A1 (en) 2007-03-22
AU2003270707A8 (en) 2004-04-23
JP2006501764A (ja) 2006-01-12
US7020287B2 (en) 2006-03-28
EP1547300A4 (en) 2011-08-03
EP1547300A1 (en) 2005-06-29
US7672458B2 (en) 2010-03-02
KR20050071527A (ko) 2005-07-07
WO2004032410A1 (en) 2004-04-15
CA2497862C (en) 2012-09-04
CN1685658A (zh) 2005-10-19
KR101013716B1 (ko) 2011-02-10
US20040062398A1 (en) 2004-04-01

Similar Documents

Publication Publication Date Title
JP4709548B2 (ja) コンテンツ再生装置及びトリックモード再生システム
JP2006501764A5 (enExample)
JP4861258B2 (ja) 後に購入し観察するためメディアプログラムを暗号化する方法および装置
US20020131595A1 (en) Encryption method, decryption method, and recording and reproducing apparatus
JP4746725B1 (ja) コンテンツ受信装置、コンテンツ再生装置、コンテンツ受信再生装置、コンテンツ受信方法、及びプログラム
JP2004247036A (ja) スクランブルデジタルデータを記録する方法、記録媒体及びかかるデータの読み取り方法
JP2006513591A (ja) 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
JP5296327B2 (ja) 放送番組コンテンツを再生する方法およびプログラム
JP2007200113A (ja) 同一コンテンツから派生した形式の異なるコンテンツを複数個所で同時に利用することを防ぐ方法及びシステム
JP2011086098A (ja) コンテンツ記録装置、再生装置、編集装置およびその方法
US8964978B2 (en) Method and apparatus for efficiently fixing transformed part of content
JP2007116552A (ja) コンテンツデータ再生システム、コンテンツデータ再生用プログラム、及び再生用機器
US20060077812A1 (en) Player/recorder, contents playing back method and contents recording method
WO2015063933A1 (ja) コンテンツ再生装置、コンテンツ再生方法及びコンテンツ再生システム
US8428256B2 (en) Method and apparatus for efficiently fixing transformed part of content
JP2006024320A (ja) 情報記録装置及び方法、情報再生装置及び方法、情報記録再生装置及び方法、並びにコンピュータプログラム
EP1721472A2 (en) Method and circuit for encrypting a data stream
JP2010178268A (ja) コンテンツ記録再生装置及びその制御方法
JP2010074537A (ja) 放送受信装置、その制御方法、放送送信装置、及びその制御方法
JPWO2006025380A1 (ja) 情報記録装置及び方法、情報再生装置及び方法、情報記録再生装置及び方法、並びにコンピュータプログラム
JP2005331994A (ja) デジタル信号記録再生装置、記録装置、及び再生装置、並びに、デジタル信号記録再生方法、記録方法、及び再生方法
JP2007013427A (ja) 情報処理装置，情報処理方法，およびコンピュータプログラム
JP2003195751A (ja) 暗号化方法
KR20070022006A (ko) 데이터 스트림을 암호화하기 위한 방법 및 회로
JP2002341760A (ja) 暗号化方法

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060912

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060912

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20080619

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20080619

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20080627

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080708

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100208

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20100510

A602 Written permission of extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A602

Effective date: 20100517

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20100708

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100714

A602 Written permission of extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A602

Effective date: 20100715

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110228

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110318

R150 Certificate of patent or registration of utility model

Ref document number: 4709548

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees