DE69925654T2 - Informationsaufzeichnungssystem - Google Patents

Informationsaufzeichnungssystem Download PDF

Info

Publication number
DE69925654T2
DE69925654T2 DE69925654T DE69925654T DE69925654T2 DE 69925654 T2 DE69925654 T2 DE 69925654T2 DE 69925654 T DE69925654 T DE 69925654T DE 69925654 T DE69925654 T DE 69925654T DE 69925654 T2 DE69925654 T2 DE 69925654T2
Authority
DE
Germany
Prior art keywords
information
decision
data
recording
copy control
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
DE69925654T
Other languages
German (de)
English (en)
Other versions
DE69925654D1 (de
Inventor
Megumu Shinagawa-ku Hashimoto
Yoshitomo Shinagawa-ku Osawa
Tomoyuki Shinagawa-ku Asano
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 DE69925654D1 publication Critical patent/DE69925654D1/de
Application granted granted Critical
Publication of DE69925654T2 publication Critical patent/DE69925654T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L12/40052High-speed IEEE 1394 serial bus
    • H04L12/40058Isochronous transmission
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/40Data acquisition and logging
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00731Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G11B20/00753Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
    • G11B20/00768Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00731Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G11B20/00753Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
    • G11B20/00768Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
    • G11B20/00775Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags wherein said copy control information is encoded in an encryption mode indicator [EMI]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L12/40052High-speed IEEE 1394 serial bus
    • H04L12/40071Packet processing; Packet format
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L12/40052High-speed IEEE 1394 serial bus
    • H04L12/40117Interconnection of audio or video/imaging devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41Structure of client; Structure of client peripherals
    • H04N21/4104Peripherals receiving signals from specially adapted client devices
    • H04N21/4135Peripherals receiving signals from specially adapted client devices external recorder
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/436Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43632Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835Generation of protective data, e.g. certificates
    • H04N21/8355Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/913Television signal processing therefor for scrambling ; for copy protection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/913Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91307Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • H04N2005/91328Television 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]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/913Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91357Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91364Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/765Interface circuits between an apparatus for recording and another apparatus
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/765Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/84Television signal recording using optical recording
    • H04N5/85Television signal recording using optical recording on discs or drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Databases & Information Systems (AREA)
  • Mathematical Physics (AREA)
  • Software Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Storage Device Security (AREA)
  • Optical Recording Or Reproduction (AREA)
DE69925654T 1998-02-18 1999-02-15 Informationsaufzeichnungssystem Expired - Lifetime DE69925654T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP3569798 1998-02-18
JP3569798 1998-02-18
JP12322398A JP4106740B2 (ja) 1998-02-18 1998-05-06 情報記録装置および方法、情報再生装置および方法、並びにプログラム記録媒体
JP12322398 1998-05-06

Publications (2)

Publication Number Publication Date
DE69925654D1 DE69925654D1 (de) 2005-07-14
DE69925654T2 true DE69925654T2 (de) 2006-03-23

Family

ID=26374691

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69925654T Expired - Lifetime DE69925654T2 (de) 1998-02-18 1999-02-15 Informationsaufzeichnungssystem

Country Status (7)

Country Link
US (1) US6526146B1 (enExample)
EP (2) EP0938091B1 (enExample)
JP (1) JP4106740B2 (enExample)
KR (1) KR100549972B1 (enExample)
CN (1) CN1152509C (enExample)
DE (1) DE69925654T2 (enExample)
TW (1) TW418579B (enExample)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3890737B2 (ja) * 1998-04-14 2007-03-07 株式会社日立製作所 ディジタル映像信号または音声信号の再生装置及び再生方法
JP3537683B2 (ja) * 1998-11-02 2004-06-14 松下電器産業株式会社 記録再生装置
JP2000156678A (ja) * 1998-11-19 2000-06-06 Sony Corp 信号処理回路
JP4238410B2 (ja) * 1999-04-09 2009-03-18 ソニー株式会社 情報処理システム
JP3916804B2 (ja) * 1999-07-06 2007-05-23 パイオニア株式会社 コンテンツの記録媒体及びその再生装置
JP2001066986A (ja) * 1999-08-26 2001-03-16 Sony Corp 送信装置および方法、受信装置および方法、通信システム、並びにプログラム格納媒体
JP2001320363A (ja) * 2000-05-10 2001-11-16 Pioneer Electronic Corp 著作権保護方法、記録方法、記録装置、再生方法及び再生装置
JP2001351319A (ja) * 2000-06-06 2001-12-21 Pioneer Electronic Corp 著作権保護方法、再生方法、再生装置、記録方法及び記録装置
US6928040B2 (en) * 2000-06-14 2005-08-09 Macrovision Corporation Identifying copy protected optical compact discs
JP4254031B2 (ja) * 2000-08-21 2009-04-15 ソニー株式会社 記録装置、携帯端末、管理サーバ、情報処理方法、および記録媒体
JP4269501B2 (ja) * 2000-09-07 2009-05-27 ソニー株式会社 情報記録装置、情報再生装置、情報記録方法、情報再生方法、および情報記録媒体、並びにプログラム提供媒体
JP3918429B2 (ja) * 2000-12-15 2007-05-23 株式会社日立製作所 デジタル信号記録方法、デジタル信号再生方法、デジタル信号記録再生方法およびデジタル信号記録再生装置
CA2776055C (en) * 2001-03-08 2013-12-10 Sony Corporation Data recorder
JP4934923B2 (ja) * 2001-08-09 2012-05-23 ソニー株式会社 情報記録装置、情報再生装置、および情報記録方法、情報再生方法、並びにコンピュータ・プログラム
JP4649797B2 (ja) * 2001-08-09 2011-03-16 ソニー株式会社 情報記録装置、情報再生装置、および情報記録方法、情報再生方法、並びにコンピュータ・プログラム
JP2003224556A (ja) * 2002-01-28 2003-08-08 Toshiba Corp 通信装置及び通信制御方法
TWI244645B (en) 2002-01-28 2005-12-01 Sony Corp Information recording apparatus and method, information reproduction apparatus and method, information recording medium, program storage medium
PL372464A1 (en) * 2002-03-25 2005-07-25 Matsushita Electric Industrial Co, Ltd. Recording medium, recording apparatus, reading apparatus, and program and method therefore
WO2004046936A1 (ja) * 2002-11-20 2004-06-03 Sony Corporation 記録システムおよび方法、記録装置および方法、入力装置および方法、再生システムおよび方法、再生装置および方法、記録媒体、並びにプログラム
US7167209B2 (en) * 2003-02-07 2007-01-23 Warner Bros. Entertainment, Inc. Methods for encoding data in an analog video signal such that it survives resolution conversion
KR100608573B1 (ko) * 2003-05-20 2006-08-03 삼성전자주식회사 데이터 복제방지 장치와 시스템 및 복제방지 방법
US20060044980A1 (en) * 2003-06-03 2006-03-02 Toshiyuki Fukushima Recording/reproduction device, recording /reproduction method, recording/reproduction system, program thereof, and recording medium
US7426273B2 (en) 2003-06-04 2008-09-16 Samsung Electronics Co. Ltd. Audio/video stream processing system and method for data copy protection
WO2004109690A1 (en) * 2003-06-04 2004-12-16 Samsung Electronics Co., Ltd. Audio/video stream processing system and method for data copy protection
JP2005063483A (ja) 2003-08-12 2005-03-10 Pioneer Electronic Corp 情報記録再生装置、情報記録再生方法及び情報記録再生プログラム
KR20050045196A (ko) * 2003-11-10 2005-05-17 삼성전자주식회사 Av 스트림 복사 방법, 장치 및 av 컨텐츠 복사 방법
JP2005190350A (ja) * 2003-12-26 2005-07-14 Toshiba Corp コンテンツ送信装置及びコンテンツ送信方法
KR20050078473A (ko) * 2004-02-02 2005-08-05 삼성전자주식회사 입력 데이터의 복사 제어 정보 갱신 장치 및 방법
KR100601671B1 (ko) 2004-04-13 2006-07-14 삼성전자주식회사 복사 금지된 콘텐츠의 예약 녹화 방법
KR100644622B1 (ko) * 2004-08-13 2006-11-10 삼성전자주식회사 복사 제어 정보를 전송하는 방법 및 장치
JP4706278B2 (ja) * 2005-02-24 2011-06-22 ソニー株式会社 情報処理システム、再生端末装置および再生方法、情報処理装置および方法、並びにプログラム
JP2007110489A (ja) * 2005-10-14 2007-04-26 Sony Corp コンテンツ処理装置及びコンテンツ処理方法、並びにコンピュータ・プログラム
JP2008097757A (ja) * 2006-10-13 2008-04-24 Toshiba Corp 再生装置および再生方法
JP5338879B2 (ja) * 2011-09-27 2013-11-13 ソニー株式会社 情報記録装置、情報再生装置、および情報記録方法、情報再生方法、並びにコンピュータ・プログラム

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0664840B2 (ja) * 1988-03-08 1994-08-22 松下電器産業株式会社 記録再生装置
DE3806414C2 (de) * 1988-02-29 1996-05-23 Thomson Brandt Gmbh Verfahren für einen Kopierschutz bei Recordern
JPH0727715B2 (ja) * 1989-11-24 1995-03-29 シャープ株式会社 ディジタルオーディオインターフェイス信号中継装置
US5315448A (en) * 1993-03-18 1994-05-24 Macrovision Corporation Copy protection for hybrid digital video tape recording and unprotected source material
JP3500671B2 (ja) * 1993-10-08 2004-02-23 ソニー株式会社 ディジタル画像信号の記録及び/又は再生方法、記録及び/又は再生装置及び記録媒体
JP3321972B2 (ja) * 1994-02-15 2002-09-09 ソニー株式会社 ディジタル信号記録装置
JP3329063B2 (ja) * 1994-03-29 2002-09-30 ソニー株式会社 再生装置
KR0136458B1 (ko) 1994-12-08 1998-05-15 구자홍 디지탈 자기 기록재생 시스템의 복사 방지장치
JPH0998375A (ja) 1995-09-29 1997-04-08 Sony Corp デジタル画像信号の記録方法、記録装置及び記録再生装置
KR100200879B1 (ko) * 1996-01-31 1999-06-15 윤종용 티오씨가 없는 씨디 재생 제어 방법
TW346571B (en) * 1996-02-06 1998-12-01 Matsushita Electric Industrial Co Ltd Data reception apparatus, data transmission apparatus, information processing system, data reception method
JPH09245438A (ja) 1996-03-12 1997-09-19 Pioneer Electron Corp 情報記録媒体並びにその記録装置及び再生装置
EP0860823A4 (en) * 1996-07-15 2001-05-02 Toshiba Kk DEVICE WITH DIGITAL INTERFACE, NETWORK SYSTEM WITH THIS DEVICE AND COPY PROTECTION PROCEDURE
US6223285B1 (en) * 1997-10-24 2001-04-24 Sony Corporation Of Japan Method and system for transferring information using an encryption mode indicator

Also Published As

Publication number Publication date
TW418579B (en) 2001-01-11
US6526146B1 (en) 2003-02-25
JPH11306677A (ja) 1999-11-05
EP0938091A3 (en) 1999-10-20
CN1241076A (zh) 2000-01-12
JP4106740B2 (ja) 2008-06-25
EP0938091A2 (en) 1999-08-25
KR100549972B1 (ko) 2006-02-08
CN1152509C (zh) 2004-06-02
EP1592010A1 (en) 2005-11-02
KR19990072630A (ko) 1999-09-27
DE69925654D1 (de) 2005-07-14
EP0938091B1 (en) 2005-06-08

Similar Documents

Publication Publication Date Title
DE69925654T2 (de) Informationsaufzeichnungssystem
DE69932695T2 (de) Technik zur Datenkopiersteuerung
DE60029371T2 (de) Informationsaufzeichnungsvorrichtung und Informationswiedergabevorrichtung mit Lizenzverwaltung
DE60105075T2 (de) Multimedia-Kopiersteuersystem und -verfahren mit einem Datenaufzeichnungsmedium und Wiedergabegerät für optische Platte
DE69803394T2 (de) Verfahren und system zur informationsübertragung mit verschlüsselungsbetriebsartindikator
DE60037088T2 (de) Datenverarbeitungssystem, datenverarbeitungsverfahren, und datenprozessor
DE60133359T2 (de) Informationsverarbeitungsvorrichtung und Informationsverarbeitungsverfahren
DE69925673T2 (de) Aufzeichnungs- und Wiedergabesystem, Aufzeichnungs- und Wiedergabegerät mit Kopierschutzfunktion
DE69919635T2 (de) Aufzeichnungs- und Wiedergabesystem, Aufzeichnungs- und Wiedergabegerät mit Kopierschutzfunktion
DE69826099T2 (de) Anordnung zur unabhängigen beantragung einer abspielberechtigung für ein reproduziertes verschlüsseltes nachrichtensignal
DE60105499T2 (de) Vorrichtung und system zum authentifizieren einer kommunikation
DE69535252T2 (de) Datenaufzeichnungsmedium und -gerät
DE69329507T2 (de) Übertragung, Aufzeichnung und Wiedergabe eines Videosignals
DE10194725B3 (de) Datenaufzeichnungs- und Wiedergabegerät mit Kopierschutzfunktion
DE69635069T2 (de) Wiedergabe von Daten
DE60212408T2 (de) Modelländerungsvorrichtung
DE112004002943B4 (de) Inhalte-Management-Programm, -Verfahren und -Vorrichtung
DE60011348T2 (de) Kopierschutz durch Beifügung von Kopierkontrollinformationen
DE69619654T2 (de) Verfahren und gerät zur überspielungssteuerung
DE3850530T2 (de) System und Verfahren zur Aufnahme/Wiedergabe mit Aufnahmebeschränkungsfunktion.
DE69427205T2 (de) Kopierkontrolle für ein Videosignal
DE60213510T2 (de) Datenanschlussvorrichtung, die Backup für eindeutig existierende Inhaltsdaten liefert
DE69806524T2 (de) Informationseinrichtungen zur Auswahl und Verwendung eines unter mehreren Verschlüsselungsanwenderprotokollen zum Urheberschutz von digitalen Produktionen
DE60011958T2 (de) Optische Platte, optisches Plattenaufzeichnungs- und wiedergabegerät, und Verfahren zur Aufzeichnung und Wiedergabe
DE69419739T2 (de) Kopierschutz für hybride digitale aufzeichnung von video auf band

Legal Events

Date Code Title Description
8364 No opposition during term of opposition