ES2045422T3 - Aparato para marcar una se\al grabada. - Google Patents

Aparato para marcar una se\al grabada.

Info

Publication number
ES2045422T3
ES2045422T3 ES89303863T ES89303863T ES2045422T3 ES 2045422 T3 ES2045422 T3 ES 2045422T3 ES 89303863 T ES89303863 T ES 89303863T ES 89303863 T ES89303863 T ES 89303863T ES 2045422 T3 ES2045422 T3 ES 2045422T3
Authority
ES
Spain
Prior art keywords
signal
recorded
mark
codes
marking
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
ES89303863T
Other languages
English (en)
Inventor
Barry Gordon Maufe
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.)
Thorn EMI PLC
Original Assignee
Thorn EMI PLC
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 Thorn EMI PLC filed Critical Thorn EMI PLC
Application granted granted Critical
Publication of ES2045422T3 publication Critical patent/ES2045422T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00884—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Burglar Alarm Systems (AREA)
  • Holo Graphy (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

ESTE INVENTO RELATA UN APARATO PARA MARCAR UNA SEÑAL GRABADA. EL APARATO INCLUYE MEDIOS PARA GENERAR Y ALMACENAR UNA SEÑAL DE MARCA QUE COMPRENDE AL MENOS DOS CODIGOS QUE ESTAN EN CUADRATURA DE FASE MUTUAMENTE. LOS CODIGOS SE CONVIERTEN EN UNA SEÑAL ANALOGICA Y SE USAN PARA MODULAR LA AMPLITUD DE FASE DE LA SEÑAL QUE VA A SER GRABADA, TENIENDO LOS MEDIOS DE MODULACION LA FUNCION DE UN MODULADOR DE BANDA DE UNA CARA EN LA SEÑAL QUE VA A SER GRABADA.
ES89303863T 1988-04-20 1989-04-19 Aparato para marcar una se\al grabada. Expired - Lifetime ES2045422T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888809347A GB8809347D0 (en) 1988-04-20 1988-04-20 Apparatus for marking recorded signal

Publications (1)

Publication Number Publication Date
ES2045422T3 true ES2045422T3 (es) 1994-01-16

Family

ID=10635530

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89303863T Expired - Lifetime ES2045422T3 (es) 1988-04-20 1989-04-19 Aparato para marcar una se\al grabada.

Country Status (7)

Country Link
US (1) US4963998A (es)
EP (1) EP0338794B1 (es)
JP (1) JPH0215461A (es)
AT (1) ATE97254T1 (es)
DE (1) DE68910566T2 (es)
ES (1) ES2045422T3 (es)
GB (1) GB8809347D0 (es)

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US5721788A (en) 1992-07-31 1998-02-24 Corbis Corporation Method and system for digital image signatures
US6301369B2 (en) 1992-07-31 2001-10-09 Digimarc Corporation Image marking to permit later identification
US5768426A (en) * 1993-11-18 1998-06-16 Digimarc Corporation Graphics processing system employing embedded code signals
US6580819B1 (en) 1993-11-18 2003-06-17 Digimarc Corporation Methods of producing security documents having digitally encoded data and documents employing same
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
US5832119C1 (en) * 1993-11-18 2002-03-05 Digimarc Corp Methods for controlling systems using control signals embedded in empirical data
US6516079B1 (en) 2000-02-14 2003-02-04 Digimarc Corporation Digital watermark screening and detecting strategies
USRE40919E1 (en) * 1993-11-18 2009-09-22 Digimarc Corporation Methods for surveying dissemination of proprietary empirical data
US5841978A (en) 1993-11-18 1998-11-24 Digimarc Corporation Network linking method using steganographically embedded data objects
US6424725B1 (en) 1996-05-16 2002-07-23 Digimarc Corporation Determining transformations of media signals with embedded code signals
US6983051B1 (en) 1993-11-18 2006-01-03 Digimarc Corporation Methods for audio watermarking and decoding
US6944298B1 (en) 1993-11-18 2005-09-13 Digimare Corporation Steganographic encoding and decoding of auxiliary codes in media signals
US6757406B2 (en) 1993-11-18 2004-06-29 Digimarc Corporation Steganographic image processing
US5636292C1 (en) * 1995-05-08 2002-06-18 Digimarc Corp Steganography methods employing embedded calibration data
US5710834A (en) * 1995-05-08 1998-01-20 Digimarc Corporation Method and apparatus responsive to a code signal conveyed through a graphic image
US5822436A (en) 1996-04-25 1998-10-13 Digimarc Corporation Photographic products and methods employing embedded information
US5841886A (en) * 1993-11-18 1998-11-24 Digimarc Corporation Security system for photographic identification
US6122403A (en) 1995-07-27 2000-09-19 Digimarc Corporation Computer system linked by using information in data objects
US5862260A (en) * 1993-11-18 1999-01-19 Digimarc Corporation Methods for surveying dissemination of proprietary empirical data
US6408082B1 (en) 1996-04-25 2002-06-18 Digimarc Corporation Watermark detection using a fourier mellin transform
US6611607B1 (en) 1993-11-18 2003-08-26 Digimarc Corporation Integrating digital watermarks in multimedia content
US7044395B1 (en) 1993-11-18 2006-05-16 Digimarc Corporation Embedding and reading imperceptible codes on objects
US5748783A (en) * 1995-05-08 1998-05-05 Digimarc Corporation Method and apparatus for robust information coding
US6449377B1 (en) 1995-05-08 2002-09-10 Digimarc Corporation Methods and systems for watermark processing of line art images
EP0959621B1 (en) * 1993-11-18 2001-02-28 Digimarc Corporation Video copy control with plural embedded signals
US6614914B1 (en) 1995-05-08 2003-09-02 Digimarc Corporation Watermark embedder and reader
US6522770B1 (en) 1999-05-19 2003-02-18 Digimarc Corporation Management of documents and other objects using optical devices
US7039214B2 (en) 1999-11-05 2006-05-02 Digimarc Corporation Embedding watermark components during separate printing stages
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
US7555139B2 (en) * 1995-05-08 2009-06-30 Digimarc Corporation Secure documents with hidden signals, and related methods and systems
US6760463B2 (en) 1995-05-08 2004-07-06 Digimarc Corporation Watermarking methods and media
US6721440B2 (en) 1995-05-08 2004-04-13 Digimarc Corporation Low visibility watermarks using an out-of-phase color
US6744906B2 (en) 1995-05-08 2004-06-01 Digimarc Corporation Methods and systems using multiple watermarks
US6829368B2 (en) 2000-01-26 2004-12-07 Digimarc Corporation Establishing and interacting with on-line media collections using identifiers in media signals
US6577746B1 (en) 1999-12-28 2003-06-10 Digimarc Corporation Watermark-based object linking and embedding
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
US6788800B1 (en) 2000-07-25 2004-09-07 Digimarc Corporation Authenticating objects using embedded data
US7006661B2 (en) 1995-07-27 2006-02-28 Digimarc Corp Digital watermarking systems and methods
US6411725B1 (en) 1995-07-27 2002-06-25 Digimarc Corporation Watermark enabled video objects
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
US6850626B2 (en) 1998-01-20 2005-02-01 Digimarc Corporation Methods employing multiple watermarks
WO2001050409A1 (en) * 1999-12-31 2001-07-12 Digimarc Corporation Compensating for color response and transfer function of scanner and/or printer when reading a digital watermark
US6625297B1 (en) 2000-02-10 2003-09-23 Digimarc Corporation Self-orienting watermarks
US6804377B2 (en) 2000-04-19 2004-10-12 Digimarc Corporation Detecting information hidden out-of-phase in color channels
US7027614B2 (en) 2000-04-19 2006-04-11 Digimarc Corporation Hiding information to reduce or offset perceptible artifacts
US6674876B1 (en) * 2000-09-14 2004-01-06 Digimarc Corporation Watermarking in the time-frequency domain
US7046819B2 (en) 2001-04-25 2006-05-16 Digimarc Corporation Encoded reference signal for digital watermarks
US6817530B2 (en) 2001-12-18 2004-11-16 Digimarc Id Systems Multiple image security features for identification documents and methods of making same
EP1459239B1 (en) 2001-12-24 2012-04-04 L-1 Secure Credentialing, Inc. Covert variable information on id documents and methods of making same
CA2470600C (en) 2001-12-24 2009-12-22 Digimarc Id Systems, Llc Systems, compositions, and methods for full color laser engraving of id documents
US7694887B2 (en) 2001-12-24 2010-04-13 L-1 Secure Credentialing, Inc. Optically variable personalized indicia for identification documents
US7728048B2 (en) 2002-12-20 2010-06-01 L-1 Secure Credentialing, Inc. Increasing thermal conductivity of host polymer used with laser engraving methods and compositions
US20030131350A1 (en) 2002-01-08 2003-07-10 Peiffer John C. Method and apparatus for identifying a digital audio signal
US7824029B2 (en) 2002-05-10 2010-11-02 L-1 Secure Credentialing, Inc. Identification card printer-assembler for over the counter card issuing
MXPA05004231A (es) * 2002-10-23 2005-07-05 Nielsen Media Res Inc Aparato para la insercion de datos digitales, y metodos para utilizarlo con audio/video comprimidos.
US7804982B2 (en) 2002-11-26 2010-09-28 L-1 Secure Credentialing, Inc. Systems and methods for managing and detecting fraud in image databases used with identification documents
US7712673B2 (en) 2002-12-18 2010-05-11 L-L Secure Credentialing, Inc. Identification document with three dimensional image of bearer
US7225991B2 (en) 2003-04-16 2007-06-05 Digimarc Corporation Three dimensional data storage
US7744002B2 (en) 2004-03-11 2010-06-29 L-1 Secure Credentialing, Inc. Tamper evident adhesive and identification document including same
CA2562137C (en) * 2004-04-07 2012-11-27 Nielsen Media Research, Inc. Data insertion apparatus and methods for use with compressed audio/video data

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* Cited by examiner, † Cited by third party
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US4040099A (en) * 1975-07-30 1977-08-02 Cook Laboratories, Inc. Method and apparatus for preparing recorded program material to render detectable unauthorized magnetic tape duplications, and method and apparatus for detecting such duplications
US4086634A (en) * 1975-07-30 1978-04-25 Cook Laboratories, Inc. Method and apparatus for preparing recorded program material to prevent unauthorized duplication by magnetic tape recording
JPS6052625B2 (ja) * 1976-03-22 1985-11-20 ソニー株式会社 記録済記録媒体及びその作製方法
JPS56124104A (en) * 1980-02-29 1981-09-29 Teac Co Secret sound recording and reproducing device
US4581766A (en) * 1980-07-02 1986-04-08 Motorola, Inc. Trigonometric transform function generator
WO1982001273A1 (en) * 1980-09-26 1982-04-15 B Loefberg Method for processing an information signal and means for carrying out the method
GB2104701B (en) * 1981-08-06 1985-06-05 James Bertram King Method and apparatus for preventing unauthorised recording of source material (eg, a gramophone recording)
US4644422A (en) * 1982-07-22 1987-02-17 Tvi Systems, Ltd. Anti-copy system
US4578722A (en) * 1982-12-23 1986-03-25 International Business Machines Corporation Method for checking disk identity in a flexible disk recorder
GB2196167B (en) * 1986-10-01 1991-01-02 Emi Plc Thorn Apparatus for marking a recorded signal

Also Published As

Publication number Publication date
DE68910566T2 (de) 1994-05-19
EP0338794B1 (en) 1993-11-10
EP0338794A2 (en) 1989-10-25
EP0338794A3 (en) 1992-01-29
US4963998A (en) 1990-10-16
GB8809347D0 (en) 1988-05-25
JPH0215461A (ja) 1990-01-19
ATE97254T1 (de) 1993-11-15
DE68910566D1 (de) 1993-12-16

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