DE69622233T2 - Verfahren zur digitalen Zugangskontrolle - Google Patents

Verfahren zur digitalen Zugangskontrolle

Info

Publication number
DE69622233T2
DE69622233T2 DE69622233T DE69622233T DE69622233T2 DE 69622233 T2 DE69622233 T2 DE 69622233T2 DE 69622233 T DE69622233 T DE 69622233T DE 69622233 T DE69622233 T DE 69622233T DE 69622233 T2 DE69622233 T2 DE 69622233T2
Authority
DE
Germany
Prior art keywords
digital signal
digital
scrambled
descrambled
signal
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 - Lifetime
Application number
DE69622233T
Other languages
German (de)
English (en)
Other versions
DE69622233D1 (de
Inventor
Yumi Bando
Takanori Eda
Satoshi Imuro
Kenji Katsumata
Toshinori Murata
Masaru Nanki
Takumi Okamura
Satoru Takashimizu
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE69622233D1 publication Critical patent/DE69622233D1/de
Publication of DE69622233T2 publication Critical patent/DE69622233T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H04N21/25—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
    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server
    • H04N21/2541—Rights Management
    • 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
    • H04N21/44—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
    • 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
    • H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • H04N2005/91328—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Signal Processing For Recording (AREA)
DE69622233T 1995-09-05 1996-09-03 Verfahren zur digitalen Zugangskontrolle Expired - Lifetime DE69622233T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22772295 1995-09-05

Publications (2)

Publication Number Publication Date
DE69622233D1 DE69622233D1 (de) 2002-08-14
DE69622233T2 true DE69622233T2 (de) 2003-03-27

Family

ID=16865337

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69622233T Expired - Lifetime DE69622233T2 (de) 1995-09-05 1996-09-03 Verfahren zur digitalen Zugangskontrolle

Country Status (4)

Country Link
US (1) US5774548A (enExample)
EP (1) EP0762765B1 (enExample)
JP (3) JP4877421B2 (enExample)
DE (1) DE69622233T2 (enExample)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7113523B1 (en) * 1997-06-11 2006-09-26 Sony Corporation Data multiplexing device, program distribution system, program transmission system, pay broadcast system, program transmission method, conditional access system, and data reception device
JP3791720B2 (ja) * 1997-06-11 2006-06-28 ソニー株式会社 伝送装置及び伝送方法
JP4119606B2 (ja) * 1997-08-01 2008-07-16 サイエンティフィック−アトランタ， インコーポレイテッド 条件付きアクセスシステム中の登録許可のカプセル化のための機構および装置
RU2000111530A (ru) * 1997-10-02 2002-05-27 Каналь+Сосьетэ Аноним Способ и устройство для шифрованной трансляции потока данных
AU748518B2 (en) * 1997-10-02 2002-06-06 Nagra France Sas Method and apparatus for encrypted data stream transmission
JP3465813B2 (ja) * 1997-10-29 2003-11-10 日本ビクター株式会社 ディジタル放送受信装置及びディジタル情報記録再生装置
EP0926894A1 (en) * 1997-12-23 1999-06-30 CANAL+ Société Anonyme Scrambling unit for a digital transmission system
US7257132B1 (en) 1998-02-26 2007-08-14 Hitachi, Ltd. Receiver set, information apparatus and receiving system
US6888943B1 (en) * 1998-04-21 2005-05-03 Verance Corporation Multimedia adaptive scrambling system (MASS)
US8584255B2 (en) * 1999-05-05 2013-11-12 Sony United Kingdom Limited Networked conditional access module
TW432840B (en) * 1998-06-03 2001-05-01 Sony Corp Communication control method, system, and device
WO1999066724A2 (en) * 1998-06-17 1999-12-23 Koninklijke Philips Electronics N.V. System of apparatus and peripherals
EP2268018B1 (en) * 1999-01-21 2017-06-14 Sony Corporation Data processing apparatus and data processing method
JP4332249B2 (ja) * 1999-02-18 2009-09-16 キヤノン株式会社 ビットストリーム復号化装置、方法及び記憶媒体
CA2366301C (en) * 1999-03-15 2010-07-13 Thomson Licensing S.A. A global copy protection system for digital home networks
IL129230A (en) * 1999-03-29 2003-04-10 Nds Ltd System for determining successful reception of a message
JP3692838B2 (ja) * 1999-06-22 2005-09-07 日本ビクター株式会社 記録方法、再生方法、再生装置及び記録媒体
EP1188315A2 (en) * 1999-12-22 2002-03-20 Koninklijke Philips Electronics N.V. Conditional access system
US7146007B1 (en) * 2000-03-29 2006-12-05 Sony Corporation Secure conditional access port interface
US7065213B2 (en) * 2001-06-29 2006-06-20 Scientific-Atlanta, Inc. In a subscriber network receiving digital packets and transmitting digital packets below a predetermined maximum bit rate
TW566041B (en) * 2001-07-06 2003-12-11 Hitachi Ltd Digital data recording device and output device
PL370774A1 (en) * 2001-12-19 2005-05-30 Irdeto Access B.V. Digital content distribution system
US8082588B2 (en) * 2002-03-15 2011-12-20 Nagravision S.A. Secured storage method of encrypted data on a personal digital recorder
WO2003090463A2 (en) * 2002-04-19 2003-10-30 Koninklijke Philips Electronics N.V. Conditional access system and apparatus
EP1516488B1 (en) * 2002-06-12 2009-05-13 Irdeto Eindhoven B.V. Conditional access apparatus and method
US6985530B1 (en) * 2002-08-20 2006-01-10 The Directv Group, Inc. Integrated receiver decoder and method for simultaneously transmitting compressed and uncompressed signals
JP4077689B2 (ja) * 2002-08-28 2008-04-16 日本放送協会 コンテンツ送信方法、コンテンツ送信装置、コンテンツ送信プログラムおよびコンテンツ受信方法、コンテンツ受信装置、コンテンツ受信プログラム
KR100482287B1 (ko) * 2002-10-26 2005-04-14 한국전자통신연구원 디지털 데이터 방송을 위한 동기화 스트림 데이터 삽입장치 및 그 방법
IL155416A0 (en) * 2003-04-13 2003-11-23 Nds Ltd System for securing access to data streams
DE102010039845A1 (de) * 2010-08-26 2012-03-01 Robert Bosch Gmbh Verfahren zum Übertragen von Sensordaten
KR101377257B1 (ko) 2013-05-08 2014-03-25 (주)토필드 개인용 영상 녹화기, 개인용 영상 녹화기에서 스크램블 상태의 녹화물의 디스크램블링 방법 및 컴퓨터 판독 가능한 기록 매체
CN109218792A (zh) * 2017-06-29 2019-01-15 上海数字电视国家工程研究中心有限公司 解复用方法
CN109218248A (zh) * 2017-06-29 2019-01-15 上海数字电视国家工程研究中心有限公司 解复用系统

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471380A (en) * 1982-03-15 1984-09-11 Scientific-Atlanta, Inc. Scrambling and descrambling of television signals for subscription TV
DE3642982A1 (de) * 1986-12-17 1988-06-30 Thomson Brandt Gmbh System zur uebertragung
JP2682030B2 (ja) * 1988-07-29 1997-11-26 松下電器産業株式会社 信号記録装置
JPH03280684A (ja) * 1990-03-28 1991-12-11 Matsushita Electric Ind Co Ltd Ｃａｔｖ装置
US5091938B1 (en) * 1990-08-06 1997-02-04 Nippon Denki Home Electronics Digital data cryptographic system
JPH04286481A (ja) * 1991-03-15 1992-10-12 Sony Corp スクランブル信号処理装置
JP3172243B2 (ja) * 1992-03-31 2001-06-04 株式会社東芝 受信装置
FR2698510B1 (fr) * 1992-11-26 1994-12-23 Schlumberger Ind Sa Réseau de communication.
JPH06282893A (ja) * 1993-02-01 1994-10-07 Toshiba Corp タイマー予約記録装置
JP2707950B2 (ja) * 1993-07-30 1998-02-04 ソニー株式会社 ディジタル画像情報処理装置
WO1995012284A1 (en) * 1993-10-25 1995-05-04 Antec Corporation Method and apparatus for providing on demand services in a subscriber system
JPH07162832A (ja) * 1993-12-10 1995-06-23 Matsushita Electric Ind Co Ltd 映像情報伝送装置
US5539823A (en) * 1994-07-27 1996-07-23 General Instrument Corporation Of Delaware Subscription television picture scrambling and descrambling system providing compatibility with different such systems

Also Published As

Publication number Publication date
JP4877421B2 (ja) 2012-02-15
US5774548A (en) 1998-06-30
EP0762765A2 (en) 1997-03-12
JP2012016035A (ja) 2012-01-19
JP2011130485A (ja) 2011-06-30
JP2012070416A (ja) 2012-04-05
DE69622233D1 (de) 2002-08-14
EP0762765A3 (en) 1999-06-16
EP0762765B1 (en) 2002-07-10
JP4905603B2 (ja) 2012-03-28

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition