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 JP50362489A priority patent/JPH03504306A/en
Priority to AU33442/89A priority patent/AU3344289A/en
Priority to PCT/GB1989/000293 priority patent/WO1989008915A1/en
Priority to EP19890904115 priority patent/EP0406291A1/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
JP50362489A JPH03504306A (en) 1988-03-18 1989-03-20 digital data protection system
AU33442/89A AU3344289A (en) 1988-03-18 1989-03-20 Digital data security system
PCT/GB1989/000293 WO1989008915A1 (en) 1988-03-18 1989-03-20 Digital data security system
EP19890904115 EP0406291A1 (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 (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4972471A (en) * 1989-05-15 1990-11-20 Gary Gross Encoding system
FR2658022B1 (en) * 1990-02-07 1995-09-22 Telediffusion Fse METHOD AND SYSTEM FOR MARKING AND IDENTIFYING DIGITAL INFORMATION.
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
US6122403A (en) * 1995-07-27 2000-09-19 Digimarc Corporation Computer system linked by using information in data objects
US6983051B1 (en) 1993-11-18 2006-01-03 Digimarc Corporation Methods for audio watermarking and decoding
US5748763A (en) 1993-11-18 1998-05-05 Digimarc Corporation Image steganography system featuring perceptually adaptive and globally scalable signal embedding
US5768426A (en) 1993-11-18 1998-06-16 Digimarc Corporation Graphics processing system employing embedded code signals
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
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
DE69636084T2 (en) * 1995-09-28 2006-09-14 Nec Corp. Method and apparatus for inserting a spread spectrum watermark into multimedia data
EP0788282B1 (en) * 1996-02-05 2010-01-20 Panasonic Corporation Quantization method
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
US6229924B1 (en) * 1996-05-16 2001-05-08 Digimarc Corporation Method and apparatus for watermarking video images
US6381341B1 (en) * 1996-05-16 2002-04-30 Digimarc Corporation Watermark encoding method exploiting biases inherent in original signal
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
MXPA00011095A (en) * 1998-05-12 2002-07-02 Verance Corp 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
JP2001344894A (en) 2000-05-31 2001-12-14 Sony Corp Data recording medium, data recording method and device, data reproduction method and device
WO2002025599A1 (en) 2000-09-20 2002-03-28 Alpvision Sa 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
DE3263964D1 (en) * 1981-02-16 1985-07-11 British Telecomm Method and apparatus for transmitting data with digitally encoded 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
WO1989008915A1 (en) 1989-09-21
JPH03504306A (en) 1991-09-19
EP0406291A1 (en) 1991-01-09

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