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GB8806452D0 - Digital data security system - Google Patents

Digital data security system

Info

Publication number
GB8806452D0
GB8806452D0 GB888806452A GB8806452A GB8806452D0 GB 8806452 D0 GB8806452 D0 GB 8806452D0 GB 888806452 A GB888806452 A GB 888806452A GB 8806452 A GB8806452 A GB 8806452A GB 8806452 D0 GB8806452 D0 GB 8806452D0
Authority
GB
United Kingdom
Prior art keywords
digital data
security system
data security
digital
security
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.)
Pending
Application number
GB888806452A
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.)
Imperial College of London
Original Assignee
Imperial College of London
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 Imperial College of London filed Critical Imperial College of London
Priority to GB888806452A priority Critical patent/GB8806452D0/en
Publication of GB8806452D0 publication Critical patent/GB8806452D0/en
Priority to AU33442/89A priority patent/AU3344289A/en
Priority to EP19890904115 priority patent/EP0406291A1/en
Priority to JP50362489A priority patent/JPH03504306A/en
Priority to PCT/GB1989/000293 priority patent/WO1989008915A1/en
Pending legal-status Critical Current

Links

GB888806452A 1988-03-18 1988-03-18 Digital data security system Pending GB8806452D0 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB888806452A GB8806452D0 (en) 1988-03-18 1988-03-18 Digital data security system
AU33442/89A AU3344289A (en) 1988-03-18 1989-03-20 Digital data security system
EP19890904115 EP0406291A1 (en) 1988-03-18 1989-03-20 Digital data security system
JP50362489A JPH03504306A (en) 1988-03-18 1989-03-20 digital data protection system
PCT/GB1989/000293 WO1989008915A1 (en) 1988-03-18 1989-03-20 Digital data security system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888806452A GB8806452D0 (en) 1988-03-18 1988-03-18 Digital data security system

Publications (1)

Publication Number Publication Date
GB8806452D0 true GB8806452D0 (en) 1988-04-20

Family

ID=10633665

Family Applications (1)

Application Number Title Priority Date Filing Date
GB888806452A Pending GB8806452D0 (en) 1988-03-18 1988-03-18 Digital data security system

Country Status (5)

Country Link
EP (1) EP0406291A1 (en)
JP (1) JPH03504306A (en)
AU (1) AU3344289A (en)
GB (1) GB8806452D0 (en)
WO (1) WO1989008915A1 (en)

Families Citing this family (55)

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US6301369B2 (en) 1992-07-31 2001-10-09 Digimarc Corporation Image marking to permit later identification
US5721788A (en) 1992-07-31 1998-02-24 Corbis Corporation Method and system for digital image signatures
US6983051B1 (en) 1993-11-18 2006-01-03 Digimarc Corporation Methods for audio watermarking and decoding
US7171016B1 (en) 1993-11-18 2007-01-30 Digimarc Corporation Method for monitoring internet dissemination of image, video and/or audio files
US5748763A (en) 1993-11-18 1998-05-05 Digimarc Corporation Image steganography system featuring perceptually adaptive and globally scalable signal embedding
US6122403A (en) * 1995-07-27 2000-09-19 Digimarc Corporation Computer system linked by using information in data objects
US6449377B1 (en) 1995-05-08 2002-09-10 Digimarc Corporation Methods and systems for watermark processing of line art images
US6944298B1 (en) 1993-11-18 2005-09-13 Digimare Corporation Steganographic encoding and decoding of auxiliary codes in media signals
US5841978A (en) 1993-11-18 1998-11-24 Digimarc Corporation Network linking method using steganographically embedded data objects
US5768426A (en) 1993-11-18 1998-06-16 Digimarc Corporation Graphics processing system employing embedded code signals
US7044395B1 (en) 1993-11-18 2006-05-16 Digimarc Corporation Embedding and reading imperceptible codes on objects
US6611607B1 (en) 1993-11-18 2003-08-26 Digimarc Corporation Integrating digital watermarks in multimedia content
US7039214B2 (en) 1999-11-05 2006-05-02 Digimarc Corporation Embedding watermark components during separate printing stages
US6522770B1 (en) 1999-05-19 2003-02-18 Digimarc Corporation Management of documents and other objects using optical devices
US6869023B2 (en) 2002-02-12 2005-03-22 Digimarc Corporation Linking documents through digital watermarking
US6968057B2 (en) 1994-03-17 2005-11-22 Digimarc Corporation Emulsion products and imagery employing steganography
US6560349B1 (en) 1994-10-21 2003-05-06 Digimarc Corporation Audio monitoring using steganographic information
GB9502274D0 (en) 1995-02-06 1995-03-29 Central Research Lab Ltd Method and apparatus for coding information
WO1996027191A1 (en) * 1995-02-28 1996-09-06 Isis Innovation Limited Covert identification
US6760463B2 (en) 1995-05-08 2004-07-06 Digimarc Corporation Watermarking methods and media
US7486799B2 (en) 1995-05-08 2009-02-03 Digimarc Corporation Methods for monitoring audio and images on the internet
US7006661B2 (en) 1995-07-27 2006-02-28 Digimarc Corp Digital watermarking systems and methods
US6577746B1 (en) 1999-12-28 2003-06-10 Digimarc Corporation Watermark-based object linking and embedding
US6411725B1 (en) 1995-07-27 2002-06-25 Digimarc Corporation Watermark enabled video objects
US6408331B1 (en) 1995-07-27 2002-06-18 Digimarc Corporation Computer linking methods using encoded graphics
US6965682B1 (en) 1999-05-19 2005-11-15 Digimarc Corp Data transmission by watermark proxy
US6345145B1 (en) 1995-08-25 2002-02-05 Sony Corporation Signal recording/reproducing method and apparatus, signal record medium and signal transmission/reception method and apparatus
EP0766468B1 (en) * 1995-09-28 2006-05-03 Nec Corporation Method and system for inserting a spread spectrum watermark into multimedia data
EP1711015A3 (en) * 1996-02-05 2006-11-08 Matsushita Electric Industrial Co., Ltd. Video signal recording apparatus, video signal regenerating apparatus, image coding apparatus and image decoding apparatus
US5664018A (en) * 1996-03-12 1997-09-02 Leighton; Frank Thomson Watermarking process resilient to collusion attacks
US5949885A (en) * 1996-03-12 1999-09-07 Leighton; F. Thomson Method for protecting content using watermarking
US20030056103A1 (en) 2000-12-18 2003-03-20 Levy Kenneth L. Audio/video commerce application architectural framework
US6381341B1 (en) * 1996-05-16 2002-04-30 Digimarc Corporation Watermark encoding method exploiting biases inherent in original signal
US6229924B1 (en) * 1996-05-16 2001-05-08 Digimarc Corporation Method and apparatus for watermarking video images
GB2354860B (en) * 1996-07-02 2001-05-30 Yamaha Corp Method and device for storing main information with associated additional infprmation incorproated therein
US6209096B1 (en) * 1996-07-02 2001-03-27 Yamaha Corporation Method and device for storing main information with associated additional information incorporated therein
US5848155A (en) * 1996-09-04 1998-12-08 Nec Research Institute, Inc. Spread spectrum watermark for embedded signalling
US6069914A (en) * 1996-09-19 2000-05-30 Nec Research Institute, Inc. Watermarking of image data using MPEG/JPEG coefficients
US5915027A (en) * 1996-11-05 1999-06-22 Nec Research Institute Digital watermarking
GB2319930B (en) * 1996-11-27 2001-05-16 Sony Uk Ltd Storage and transmission of one-bit data
US6118741A (en) * 1997-06-19 2000-09-12 Mimnagh; Winslow M. Method and device for recording information on a carrier
US6108434A (en) * 1997-09-12 2000-08-22 Signafy, Inc. Counteracting geometric distortions for DCT based watermarking
US6611599B2 (en) 1997-09-29 2003-08-26 Hewlett-Packard Development Company, L.P. Watermarking of digital object
US6804376B2 (en) 1998-01-20 2004-10-12 Digimarc Corporation Equipment employing watermark-based authentication function
AU3656999A (en) * 1998-05-12 1999-11-29 Solana Technology Development Corporation Digital hidden data transport (dhdt)
US6792542B1 (en) 1998-05-12 2004-09-14 Verance Corporation Digital system for embedding a pseudo-randomly modulated auxiliary data sequence in digital samples
US6154571A (en) 1998-06-24 2000-11-28 Nec Research Institute, Inc. Robust digital watermarking
JP3651319B2 (en) 1999-07-16 2005-05-25 日本ビクター株式会社 Digital watermark information recording method, reproduction method, digital watermark information recording apparatus, and reproduction apparatus
US6625297B1 (en) 2000-02-10 2003-09-23 Digimarc Corporation Self-orienting watermarks
US7027614B2 (en) 2000-04-19 2006-04-11 Digimarc Corporation Hiding information to reduce or offset perceptible artifacts
JP2001344894A (en) * 2000-05-31 2001-12-14 Sony Corp Data recording medium, data recording method and device, data reproduction method and device
US7684088B2 (en) 2000-09-20 2010-03-23 Alpvision S.A. Method for preventing counterfeiting or alteration of a printed or engraved surface
LU91698B1 (en) * 2010-06-10 2011-12-12 Pleimo S A System and method for processing digital content

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE13735T1 (en) * 1981-02-16 1985-06-15 British Telecomm METHOD AND DEVICE FOR TRANSMISSION OF DATA WITH DIGITAL CODED SPEECH.
JPS5885938A (en) * 1981-11-16 1983-05-23 Toshiba Corp Optical information recording system
DE3523809A1 (en) * 1985-05-21 1986-11-27 Polygram Gmbh, 2000 Hamburg METHOD FOR TIME COMPRESSION OF INFORMATION IN DIGITAL FORM
JPH0743825B2 (en) * 1985-12-04 1995-05-15 ソニー株式会社 Dubbing method

Also Published As

Publication number Publication date
AU3344289A (en) 1989-10-05
JPH03504306A (en) 1991-09-19
WO1989008915A1 (en) 1989-09-21
EP0406291A1 (en) 1991-01-09

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