DE60017155D1 - Ver- und entschlüsselungsvorrichtung und verfahren für digitale videoeinhaltsübertragung - Google Patents

Ver- und entschlüsselungsvorrichtung und verfahren für digitale videoeinhaltsübertragung

Info

Publication number
DE60017155D1
DE60017155D1 DE60017155T DE60017155T DE60017155D1 DE 60017155 D1 DE60017155 D1 DE 60017155D1 DE 60017155 T DE60017155 T DE 60017155T DE 60017155 T DE60017155 T DE 60017155T DE 60017155 D1 DE60017155 D1 DE 60017155D1
Authority
DE
Germany
Prior art keywords
design
digital video
decomposition
transfer
video device
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
DE60017155T
Other languages
English (en)
Other versions
DE60017155T2 (de
Inventor
L Graunke
A Lee
W Faber
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.)
Intel Corp
Original Assignee
Intel 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 Intel Corp filed Critical Intel Corp
Application granted granted Critical
Publication of DE60017155D1 publication Critical patent/DE60017155D1/de
Publication of DE60017155T2 publication Critical patent/DE60017155T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network 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 
    • H04N21/63Control 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
    • H04N21/633Control signals issued by server directed to the network components or client
    • H04N21/6332Control signals issued by server directed to the network components or client directed to client
    • H04N21/6334Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
    • 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
    • H04N21/418External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4183External card to be used in combination with the client device, e.g. for conditional access providing its own processing capabilities, e.g. external module for video decoding
    • 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
    • H04N21/4108Peripherals receiving signals from specially adapted client devices characterised by an identification number or address, e.g. local network address
    • 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
    • H04N21/418External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4181External card to be used in combination with the client device, e.g. for conditional access for conditional access
    • 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
    • H04N21/45Management 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
    • H04N21/462Content 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
    • H04N21/4627Rights management associated to the content
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network 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 
    • H04N21/63Control 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
    • H04N21/633Control signals issued by server directed to the network components or client
    • H04N21/6332Control signals issued by server directed to the network components or client directed to client
    • H04N21/6334Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
    • H04N21/63345Control 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network 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 
    • H04N21/63Control 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
    • H04N21/637Control signals issued by the client directed to the server or network components
    • H04N21/6377Control signals issued by the client directed to the server or network components directed to server
    • H04N21/63775Control signals issued by the client directed to the server or network components directed to server for uploading keys, e.g. for a client to communicate its public key to the server
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/167Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
DE60017155T 1999-08-29 2000-08-17 Ver- und entschlüsselungsvorrichtung und verfahren für digitale videoeinhaltsübertragung Expired - Lifetime DE60017155T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/385,592 US6731758B1 (en) 1999-08-29 1999-08-29 Digital video content transmission ciphering and deciphering method and apparatus
US385592 1999-08-29
PCT/US2000/022785 WO2001017251A1 (en) 1999-08-29 2000-08-17 Digital video content transmission ciphering and deciphering met hod and apparatus

Publications (2)

Publication Number Publication Date
DE60017155D1 true DE60017155D1 (de) 2005-02-03
DE60017155T2 DE60017155T2 (de) 2006-03-02

Family

ID=23522062

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60017155T Expired - Lifetime DE60017155T2 (de) 1999-08-29 2000-08-17 Ver- und entschlüsselungsvorrichtung und verfahren für digitale videoeinhaltsübertragung

Country Status (10)

Country Link
US (2) US6731758B1 (de)
EP (1) EP1212893B1 (de)
JP (1) JP4170620B2 (de)
KR (1) KR100478507B1 (de)
CN (1) CN1235405C (de)
AU (1) AU6918400A (de)
DE (1) DE60017155T2 (de)
HK (1) HK1043683A1 (de)
TW (1) TW501370B (de)
WO (1) WO2001017251A1 (de)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10301492A (ja) * 1997-04-23 1998-11-13 Sony Corp 暗号化装置および方法、復号装置および方法、並びに情報処理装置および方法
US8055588B2 (en) * 1999-05-19 2011-11-08 Digimarc Corporation Digital media methods
US6920221B1 (en) 1999-08-29 2005-07-19 Intel Corporation Method and apparatus for protected exchange of status and secret values between a video source application and a video hardware interface
US6731758B1 (en) * 1999-08-29 2004-05-04 Intel Corporation Digital video content transmission ciphering and deciphering method and apparatus
US6947558B1 (en) 1999-08-29 2005-09-20 Intel Corporation Stream cipher having a shuffle network combiner function
US6477252B1 (en) 1999-08-29 2002-11-05 Intel Corporation Digital video content transmission ciphering and deciphering method and apparatus
US7068786B1 (en) 1999-08-29 2006-06-27 Intel Corporation Dual use block/stream cipher
US7356848B1 (en) * 1999-10-19 2008-04-08 Thomson Licensing System and method of verifying authorization for communicating protected content
US7003107B2 (en) 2000-05-23 2006-02-21 Mainstream Encryption Hybrid stream cipher
US7277543B1 (en) * 2000-11-14 2007-10-02 Honeywell International Inc. Cryptographic combiner using two sequential non-associative operations
US6909786B2 (en) * 2001-01-09 2005-06-21 D'crypt Private Limited Cryptographic trap door with timed lock and controlled escrow
FI115356B (fi) * 2001-06-29 2005-04-15 Nokia Corp Menetelmä audiovisuaalisen informaation käsittelemiseksi elektroniikkalaitteessa, järjestelmä ja elektroniikkalaite
KR100995439B1 (ko) * 2002-09-28 2010-11-18 주식회사 케이티 스트리밍 데이터 보호 장치 및 그 방법과 그를 이용한스트리밍 보안 시스템
JP4214454B2 (ja) * 2002-12-13 2009-01-28 ソニー株式会社 映像信号処理システム、映像信号処理装置および方法、記録媒体、並びにプログラム
WO2004086672A1 (ja) * 2003-03-25 2004-10-07 National Institute Of Information And Communications Technology, Incorporated Administrative Agency 暗号化および復号のための装置、方法、プログラム並びに記録媒体
EP1646022A4 (de) * 2003-07-14 2010-09-08 Sony Corp Einrichtung und verfahren zur verschlüsselung/entschlüsselung
US8472792B2 (en) 2003-12-08 2013-06-25 Divx, Llc Multimedia distribution system
US7519274B2 (en) 2003-12-08 2009-04-14 Divx, Inc. File format for multiple track digital data
US20050213751A1 (en) * 2004-03-26 2005-09-29 Apostolopoulos John J Methods and systems for generating transcodable encrypted content
KR20070042511A (ko) * 2004-06-14 2007-04-23 디 유니버시티 오브 노스 캐롤라이나 앳 그린스보로 디지털 콘텐트 보안 시스템 및 방법
CN102202204A (zh) * 2004-10-28 2011-09-28 罗威解决方案公司 修改视频信号的设备和方法
KR100660850B1 (ko) * 2005-01-11 2006-12-26 삼성전자주식회사 Vod 시스템 및 vod 시스템 재구성 방법
WO2006085283A1 (en) * 2005-02-09 2006-08-17 Koninklijke Philips Electronics N.V. High speed encryption and decryption
DE602006008593D1 (de) * 2005-04-07 2009-10-01 France Telecom Verwaltung des zugangs zu multimedia-inhalten
US7792293B2 (en) * 2005-05-06 2010-09-07 Rovi Solutions Corporation Method and apparatus for modifying a subsequently generated control command in a content control system
WO2007043014A1 (en) * 2005-10-13 2007-04-19 Koninklijke Philips Electronics N.V. Method of encrypted communication using a keystream
EP1999883A4 (de) 2006-03-14 2013-03-06 Divx Llc Schema zur verwaltung vereinigter digitaler rechte einschliesslich vertrauenswürdiger systeme
CN100426859C (zh) * 2006-05-11 2008-10-15 蓝汛网络科技(北京)有限公司 针对网络视频的选择性加密算法
JP4912797B2 (ja) * 2006-08-30 2012-04-11 三菱電機株式会社 暗号装置及び復号装置及び暗号方法及び復号方法及びプログラム
KR100826522B1 (ko) * 2006-11-15 2008-04-30 삼성전자주식회사 이동통신 시스템에서 동적 암호화 장치 및 방법
US20080159532A1 (en) * 2006-12-29 2008-07-03 Verma Rohit R Architecture for supporting high definition content protection decryption over high definition multimedia interface links
CN103561278B (zh) 2007-01-05 2017-04-12 索尼克知识产权股份有限公司 包含连续播放的视频分配系统
CA2685877A1 (en) * 2007-05-08 2008-11-20 Thomson Licensing Method and apparatus for adjusting decryption keys
US20080304664A1 (en) * 2007-06-07 2008-12-11 Shanmugathasan Suthaharan System and a method for securing information
US20080309816A1 (en) * 2007-06-15 2008-12-18 Macrovision Corporation Television content control system and method with cross-platform capability
JP5273963B2 (ja) 2007-07-23 2013-08-28 修 亀田 擬似乱数の生成方法及び装置、並びに擬似乱数を用いた暗号化方法及び装置
CN101861583B (zh) 2007-11-16 2014-06-04 索尼克Ip股份有限公司 用于多媒体文件的分级及简化索引结构
US8259949B2 (en) * 2008-05-27 2012-09-04 Intel Corporation Methods and apparatus for protecting digital content
EP2311257B1 (de) * 2008-08-13 2016-01-06 GVBB Holdings S.A.R.L Vorrichtung und verfahren zum verschlüsseln von bilddaten und entschlüsseln der verschlüsselten bilddaten und bilddatenverteilungssystem
KR101012334B1 (ko) * 2009-02-17 2011-02-09 (주)티엔씨애드컴 부표 광고장치 및 방법
CA2782825C (en) 2009-12-04 2016-04-26 Divx, Llc Elementary bitstream cryptographic material transport systems and methods
US9043827B1 (en) 2009-12-16 2015-05-26 Prime Research Alliance E, Inc. Method and system for providing conditional access to encrypted content
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
US9191457B2 (en) 2012-12-31 2015-11-17 Sonic Ip, Inc. Systems, methods, and media for controlling delivery of content
JP6944371B2 (ja) 2015-01-06 2021-10-06 ディビックス, エルエルシー コンテンツを符号化し、デバイス間でコンテンツを共有するためのシステムおよび方法
CN110909375B (zh) * 2019-10-12 2022-04-08 浙江工业大学 一种保留分布特征的地址脱敏方法
CN114666624A (zh) * 2022-04-07 2022-06-24 乾三(北京)科技有限公司 一种视频文件加密和解密方法

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798360A (en) 1971-06-30 1974-03-19 Ibm Step code ciphering system
US4004089A (en) 1975-02-28 1977-01-18 Ncr Corporation Programmable cryptic device for enciphering and deciphering data
US4316055A (en) 1976-12-30 1982-02-16 International Business Machines Corporation Stream/block cipher crytographic system
NL8301458A (nl) 1983-04-26 1984-11-16 Philips Nv Werkwijze voor het distribueren en benutten van vercijferingssleutels.
US4613901A (en) 1983-05-27 1986-09-23 M/A-Com Linkabit, Inc. Signal encryption and distribution system for controlling scrambling and selective remote descrambling of television signals
US4605820A (en) 1983-11-10 1986-08-12 Visa U.S.A. Inc. Key management system for on-line communication
US4641102A (en) 1984-08-17 1987-02-03 At&T Bell Laboratories Random number generator
EP0382680B1 (de) 1989-02-08 1994-10-12 Gretag Data Systems AG Verfahren zum kryptographischen Behandeln von Daten und kryptographisches System
JP2810103B2 (ja) 1989-04-28 1998-10-15 パイオニア株式会社 テレビジョン信号のスクランブル方法
US4991208A (en) * 1990-03-29 1991-02-05 Gte Laboratories Incorporated Video control system having session encryption key
US5195136A (en) 1991-09-30 1993-03-16 Motorola, Inc. Method and apparatus for data encryption or decryption
FR2698510B1 (fr) 1992-11-26 1994-12-23 Schlumberger Ind Sa Réseau de communication.
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
US5341426A (en) 1992-12-15 1994-08-23 Motorola, Inc. Cryptographic key management apparatus and method
JPH06350937A (ja) * 1993-06-14 1994-12-22 Pioneer Electron Corp 画像合成再生装置
KR950013093A (ko) 1993-10-19 1995-05-17 모리시타 요이찌 스크램블전송장치 및 난수발생장치
US5680131A (en) 1993-10-29 1997-10-21 National Semiconductor Corporation Security system having randomized synchronization code after power up
US5533127A (en) 1994-03-18 1996-07-02 Canon Information Systems, Inc. Encryption system
US5590194A (en) 1994-08-09 1996-12-31 Macrovision Corporation Method of and apparatus for scrambling a video signal with full network transmission and recording capability
MY125706A (en) 1994-08-19 2006-08-30 Thomson Consumer Electronics High speed signal processing smart card
US5673319A (en) 1995-02-06 1997-09-30 International Business Machines Corporation Block cipher mode of operation for secure, length-preserving encryption
DE69634219D1 (de) 1995-03-21 2005-03-03 Sun Microsystems Inc Videoeinzelbildkennungserfassung
US5703950A (en) 1995-06-30 1997-12-30 Intermec Corporation Method and apparatus for controlling country specific frequency allocation
US5852472A (en) 1995-09-28 1998-12-22 Intel Corporation Method and apparatus for connecting video sources and video sinks
US5825879A (en) 1996-09-30 1998-10-20 Intel Corporation System and method for copy-protecting distributed video content
US6005940A (en) 1997-05-16 1999-12-21 Software Security, Inc. System for securely storing and reading encrypted data on a data medium using a transponder
US6167136A (en) 1997-05-16 2000-12-26 Software Security, Inc. Method for preventing copying of digital video disks
JP3088337B2 (ja) 1997-05-30 2000-09-18 三菱電機株式会社 暗号処理装置、icカード及び暗号処理方法
ID23916A (id) 1997-10-02 2000-05-25 Canal Plus Sa Metode dan perangkat untuk pemancaran arus data yang disandikan
US6061449A (en) 1997-10-10 2000-05-09 General Instrument Corporation Secure processor with external memory using block chaining and block re-ordering
EP1031206A2 (de) 1997-10-14 2000-08-30 Microsoft Corporation Verfahren und vorrichtung zur aufdeckung von blossgestellten sicherheitseinrichtungen
JPH11176091A (ja) 1997-12-15 1999-07-02 Hitachi Ltd ディジタル情報入出力装置、受信装置、記録装置、および再生装置
US6118873A (en) 1998-04-24 2000-09-12 International Business Machines Corporation System for encrypting broadcast programs in the presence of compromised receiver devices
US6345101B1 (en) 1998-10-07 2002-02-05 Jayant Shukla Cryptographic method and apparatus for data communication and storage
US6452959B1 (en) 1999-05-28 2002-09-17 Dot Wireless, Inc. Method of and apparatus for generating data sequences for use in communications
US6731758B1 (en) 1999-08-29 2004-05-04 Intel Corporation Digital video content transmission ciphering and deciphering method and apparatus
US6477252B1 (en) 1999-08-29 2002-11-05 Intel Corporation Digital video content transmission ciphering and deciphering method and apparatus

Also Published As

Publication number Publication date
EP1212893B1 (de) 2004-12-29
CN1385032A (zh) 2002-12-11
AU6918400A (en) 2001-03-26
JP4170620B2 (ja) 2008-10-22
KR100478507B1 (ko) 2005-03-28
DE60017155T2 (de) 2006-03-02
US20040202321A1 (en) 2004-10-14
US6731758B1 (en) 2004-05-04
KR20020053808A (ko) 2002-07-05
EP1212893A1 (de) 2002-06-12
TW501370B (en) 2002-09-01
JP2003508975A (ja) 2003-03-04
US7043021B2 (en) 2006-05-09
WO2001017251A1 (en) 2001-03-08
CN1235405C (zh) 2006-01-04
HK1043683A1 (en) 2002-09-20

Similar Documents

Publication Publication Date Title
DE60017155D1 (de) Ver- und entschlüsselungsvorrichtung und verfahren für digitale videoeinhaltsübertragung
DE69903936D1 (de) Verfahren und system für eine digitale bildaufnahmevorrichtung
DE60033489D1 (de) Verfahren und Vorrichtung zur Duplexdigitaldatenübertragung
DE59712802D1 (de) Digitales Datenübertragungsnetz und Verfahren zum Betreiben des Datenübertragungsnetzes
DE69940586D1 (de) Verfahren und Gerät zum digitalen Wasserzeichnen
DE978190T1 (de) Digitale direktzugriffschaltungseinrichtung und verfahren zur verbindung mit fernsprechleitungen
DE60029914D1 (de) System und Verfahren zum Zwischenspeichern
DE60035549D1 (de) Bildaufzeichnungsgerät und Verfahren
DE69906534D1 (de) Benutzerschnittstelle für digitale videovorrichtung
DE60026872D1 (de) Informationsübertragungssystem und verfahren
DE60034389D1 (de) Festkörperbildaufnahmevorrichtung und Verfahren zu ihrer Herstellung
DE60045184D1 (de) Gerät und Verfahren für Packetbasierte Kommunikation
ATE384384T1 (de) System, verfahren und vorrichtung zum daten-push in einer umgebung für unmittelbar digitale rufe
DE69942141D1 (de) Bilddatenübertragungsgerät und Uebertragungsverfahren dafür
DE69923659D1 (de) Datenverarbeitungsvorrichtung und verfahren
DE60014338D1 (de) Verfahren und gerät zur bildverarbeitung
DE60201368D1 (de) Bildaufnahmegerät und Verfahren zu dessen Herstellung
DE60032847D1 (de) Verfahren und Vorrichtung für verbesserte Videokodierung
DE60044517D1 (de) Vorrichtung und Verfahren für drahtlose digitale Kommunikationen
DE60027177D1 (de) Gerät und verfahren für ein telekommunikationssystem
DE60045503D1 (de) Verfahren und Gerät zur Bildverarbeitung
DE69927454D1 (de) Bildkommunikationsvorrichtung und verfahren
DE69934295D1 (de) System und verfahren zum kopierschutz für digitale signale
DE60033224D1 (de) Drucksystem und Verfahren dafür
DE60024050D1 (de) Bildkommunikationsgerät und Verfahren

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: HEYER, V., DIPL.-PHYS. DR.RER.NAT., PAT.-ANW., 806