MXPA04006400A - Elementary stream partial encryption. - Google Patents

Elementary stream partial encryption.

Info

Publication number
MXPA04006400A
MXPA04006400A MXPA04006400A MXPA04006400A MXPA04006400A MX PA04006400 A MXPA04006400 A MX PA04006400A MX PA04006400 A MXPA04006400 A MX PA04006400A MX PA04006400 A MXPA04006400 A MX PA04006400A MX PA04006400 A MXPA04006400 A MX PA04006400A
Authority
MX
Mexico
Prior art keywords
encryption
program
television
permitting
conditional access
Prior art date
Application number
MXPA04006400A
Other languages
Spanish (es)
Inventor
Kenneth Ever Mark
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 US10/037,914 external-priority patent/US7124303B2/en
Priority claimed from CA 2405865 external-priority patent/CA2405865C/en
Application filed by Sony Electronics Inc filed Critical Sony Electronics Inc
Publication of MXPA04006400A publication Critical patent/MXPA04006400A/en

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]
    • H04N21/20—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, manipulating MPEG-4 scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 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]
    • H04N21/40—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, rendering scenes according to MPEG-4 scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 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, rendering scenes according to MPEG-4 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, manipulating MPEG-4 scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption
    • H04N21/23476—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 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
    • H04N21/2362—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
    • H04N21/25—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
    • H04N21/4345—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
    • H04N21/45—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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • 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
    • H04N7/167—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

Abstract

An encryption arrangement for multiple encryption of television programs. A system according toembodiments of the present invention multiple encrypts only a portion of the data required for full presentation of a television program to permit coexistence of multiple conditional access encryption systems associated with multiple manufacturer's set-top boxes within a single system. In one embodiment, only audio data are encrypted leaving video in the clear. By only encrypting a portion of the program, dramatically less bandwidth is consumed than the alternative of multiple encryption of all program data, thus permitting a larger number of programs to be carried over the samebandwidth while permitting coexistence of multiple conditional access systems in a single cable television system.
MXPA04006400A 2002-01-02 2002-12-13 Elementary stream partial encryption. MXPA04006400A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/037,914 US7124303B2 (en) 2001-06-06 2002-01-02 Elementary stream partial encryption
CA 2405865 CA2405865C (en) 2001-10-26 2002-10-01 Elementary stream partial encryption
PCT/US2002/040051 WO2003061173A2 (en) 2002-01-02 2002-12-13 Elementary stream partial encryption

Publications (1)

Publication Number Publication Date
MXPA04006400A true MXPA04006400A (en) 2004-10-04

Family

ID=25682868

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA04006400A MXPA04006400A (en) 2002-01-02 2002-12-13 Elementary stream partial encryption.

Country Status (7)

Country Link
EP (1) EP1486071A4 (en)
JP (1) JP4446743B2 (en)
KR (1) KR101004196B1 (en)
CN (1) CN1633809B (en)
AU (1) AU2002357846A1 (en)
MX (1) MXPA04006400A (en)
WO (1) WO2003061173A2 (en)

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EP1999883A4 (en) 2006-03-14 2013-03-06 Divx Llc Federated digital rights management scheme including trusted systems
JP4175381B2 (en) * 2006-05-10 2008-11-05 ソニー株式会社 Information processing system and method, information processing apparatus and method, and program
CN103561278B (en) 2007-01-05 2017-04-12 索尼克知识产权股份有限公司 Video distribution system including progressive playback
EP2119230B1 (en) 2007-01-11 2013-07-03 NDS Limited Processing video content
US8385545B2 (en) * 2007-07-27 2013-02-26 Howard G. Pinder Secure content key distribution using multiple distinct methods
CN101861583B (en) 2007-11-16 2014-06-04 索尼克Ip股份有限公司 Hierarchical and reduced index structures for multimedia files
CN101562813B (en) * 2009-05-12 2012-01-11 中兴通讯股份有限公司 Method for implementing real-time data service, real-time data service system and mobile terminal
CA2782825C (en) 2009-12-04 2016-04-26 Divx, Llc Elementary bitstream cryptographic material transport systems and methods
EP2341708B1 (en) 2010-01-05 2017-03-08 Irdeto B.V. Broadcasting variants of digital signals in a conditional access system
DE112011103963B4 (en) 2010-12-26 2018-11-15 Lg Electronics Inc. A method for transmitting a broadcast service, method for receiving the broadcast service, and apparatus for receiving the broadcast service
US8649514B2 (en) * 2010-12-28 2014-02-11 Sony Corporation On-demand switched content encryption
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
US9467708B2 (en) 2011-08-30 2016-10-11 Sonic Ip, Inc. Selection of resolutions for seamless resolution switching of multimedia content
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
CN103873887A (en) * 2012-12-13 2014-06-18 航天信息股份有限公司 Request program playing method, device and system
US9191457B2 (en) 2012-12-31 2015-11-17 Sonic Ip, Inc. Systems, methods, and media for controlling delivery of content
JP6944371B2 (en) 2015-01-06 2021-10-06 ディビックス， エルエルシー Systems and methods for encoding content and sharing content between devices

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US5018197A (en) * 1990-07-30 1991-05-21 Zenith Electronics Corporation Secure video decoder system
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 (en) * 1994-04-06 1996-04-26 France Telecom Method for broadcasting programs with progressive conditional access and separating the flow of information.
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Also Published As

Publication number Publication date
CN1633809A (en) 2005-06-29
WO2003061173A3 (en) 2004-09-23
JP2005515694A (en) 2005-05-26
EP1486071A4 (en) 2009-09-30
KR101004196B1 (en) 2010-12-24
KR20040068994A (en) 2004-08-02
CN1633809B (en) 2010-04-21
EP1486071A2 (en) 2004-12-15
AU2002357846A8 (en) 2003-07-30
JP4446743B2 (en) 2010-04-07
AU2002357846A1 (en) 2003-07-30
WO2003061173A2 (en) 2003-07-24

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