WO2006116270A3 - Security enhancements of digital watermarks for multi-media content - Google Patents

Security enhancements of digital watermarks for multi-media content Download PDF

Info

Publication number
WO2006116270A3
WO2006116270A3 PCT/US2006/015410 US2006015410W WO2006116270A3 WO 2006116270 A3 WO2006116270 A3 WO 2006116270A3 US 2006015410 W US2006015410 W US 2006015410W WO 2006116270 A3 WO2006116270 A3 WO 2006116270A3
Authority
WO
WIPO (PCT)
Prior art keywords
embedding
digital watermarks
host content
digital
opportunities
Prior art date
Application number
PCT/US2006/015410
Other languages
French (fr)
Other versions
WO2006116270A2 (en
Inventor
Rade Petrovic
Babak Tehranchi
Joseph M Winograd
Kanaan Jemili
Original Assignee
Verance Corp
Rade Petrovic
Babak Tehranchi
Joseph M Winograd
Kanaan Jemili
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
Priority claimed from US11/115,990 external-priority patent/US20060239501A1/en
Priority claimed from US11/116,137 external-priority patent/US7616776B2/en
Application filed by Verance Corp, Rade Petrovic, Babak Tehranchi, Joseph M Winograd, Kanaan Jemili filed Critical Verance Corp
Priority to CA002605641A priority Critical patent/CA2605641A1/en
Priority to EP06758537A priority patent/EP1880344A4/en
Priority to JP2008508985A priority patent/JP5165555B2/en
Publication of WO2006116270A2 publication Critical patent/WO2006116270A2/en
Publication of WO2006116270A3 publication Critical patent/WO2006116270A3/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32288Multiple embedding, e.g. cocktail embedding, or redundant embedding, e.g. repeating the additional information at a plurality of locations in the image
    • H04N1/32299Multiple embedding, e.g. cocktail embedding, or redundant embedding, e.g. repeating the additional information at a plurality of locations in the image using more than one embedding method
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00General purpose image data processing
    • G06T1/0021Image watermarking
    • G06T1/005Robust watermarking, e.g. average attack or collusion attack resistant
    • G06T1/0071Robust watermarking, e.g. average attack or collusion attack resistant using multiple or alternating watermarks
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/018Audio watermarking, i.e. embedding inaudible data in the audio signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/002Countermeasures against attacks on cryptographic mechanisms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/088Usage controlling of secret information, e.g. techniques for restricting cryptographic keys to pre-authorized uses, different access levels, validity of crypto-period, different key- or password length, or different strong and weak cryptographic algorithms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32288Multiple embedding, e.g. cocktail embedding, or redundant embedding, e.g. repeating the additional information at a plurality of locations in the image
    • H04N1/32304Embedding different sets of additional information
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2201/00General purpose image data processing
    • G06T2201/005Image watermarking
    • G06T2201/0065Extraction of an embedded watermark; Reliable detection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60Digital content management, e.g. content distribution
    • H04L2209/608Watermarking
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H04N2201/3233Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of authentication information, e.g. digital signature, watermark
    • H04N2201/3239Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of authentication information, e.g. digital signature, watermark using a plurality of different authentication information

Abstract

Methods and apparatus for embedding digital watermarks into a digital host content are provided. A digital host content is received, e.g., at a receiver or other device incorporating a receiver. One or more watermark embedding technologies is selected. Multiple embedding opportunities are identified within the host content. A subset of the identified embedding opportunities is selected. A multiplicity of digital watermarks are then embedded into the host content in accordance with the selected subset of embedding opportunities utilizing the one or more selected watermark embedding technologies. The selecting of the subset of embedding opportunities may be adapted to provide a desired tradeoff between levels of robustness, security, and transparency of the watermark. A plurality of watermarking embedding technologies may be selected and used in the embedding step.
PCT/US2006/015410 2005-04-26 2006-04-21 Security enhancements of digital watermarks for multi-media content WO2006116270A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002605641A CA2605641A1 (en) 2005-04-26 2006-04-21 Security enhancements of digital watermarks for multi-media content
EP06758537A EP1880344A4 (en) 2005-04-26 2006-04-21 Security enhancements of digital watermarks for multi-media content
JP2008508985A JP5165555B2 (en) 2005-04-26 2006-04-21 Enhanced security of digital watermark for multimedia contents

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11/115,990 2005-04-26
US11/116,137 2005-04-26
US11/115,990 US20060239501A1 (en) 2005-04-26 2005-04-26 Security enhancements of digital watermarks for multi-media content
US11/116,137 US7616776B2 (en) 2005-04-26 2005-04-26 Methods and apparatus for enhancing the robustness of watermark extraction from digital host content

Publications (2)

Publication Number Publication Date
WO2006116270A2 WO2006116270A2 (en) 2006-11-02
WO2006116270A3 true WO2006116270A3 (en) 2008-07-31

Family

ID=37215359

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/015410 WO2006116270A2 (en) 2005-04-26 2006-04-21 Security enhancements of digital watermarks for multi-media content

Country Status (4)

Country Link
EP (1) EP1880344A4 (en)
JP (3) JP5165555B2 (en)
CA (1) CA2605641A1 (en)
WO (1) WO2006116270A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107295351A (en) * 2017-07-17 2017-10-24 浙江师范大学 It is a kind of that symmetrical asymmetric encryption and decryption method and system is carried out to image

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7644282B2 (en) 1998-05-28 2010-01-05 Verance Corporation Pre-processed information embedding system
US6737957B1 (en) 2000-02-16 2004-05-18 Verance Corporation Remote control signaling using audio watermarks
EP1552454B1 (en) 2002-10-15 2014-07-23 Verance Corporation Media monitoring, management and information system
US9055239B2 (en) 2003-10-08 2015-06-09 Verance Corporation Signal continuity assessment using embedded watermarks
US20060239501A1 (en) 2005-04-26 2006-10-26 Verance Corporation Security enhancements of digital watermarks for multi-media content
US8020004B2 (en) 2005-07-01 2011-09-13 Verance Corporation Forensic marking using a common customization function
US8781967B2 (en) 2005-07-07 2014-07-15 Verance Corporation Watermarking in an encrypted domain
KR101413413B1 (en) 2010-03-04 2014-06-27 닛본 덴끼 가부시끼가이샤 Foreign object determination device, foreign object determination method and foreign object determination program
US9607131B2 (en) 2010-09-16 2017-03-28 Verance Corporation Secure and efficient content screening in a networked environment
US8682026B2 (en) 2011-11-03 2014-03-25 Verance Corporation Efficient extraction of embedded watermarks in the presence of host content distortions
US8923548B2 (en) 2011-11-03 2014-12-30 Verance Corporation Extraction of embedded watermarks from a host content using a plurality of tentative watermarks
US8745403B2 (en) 2011-11-23 2014-06-03 Verance Corporation Enhanced content management based on watermark extraction records
US9547753B2 (en) 2011-12-13 2017-01-17 Verance Corporation Coordinated watermarking
US9323902B2 (en) 2011-12-13 2016-04-26 Verance Corporation Conditional access using embedded watermarks
JP5953869B2 (en) * 2012-03-27 2016-07-20 富士通株式会社 Program, watermark embedding apparatus and watermark embedding method
US9571606B2 (en) 2012-08-31 2017-02-14 Verance Corporation Social media viewing system
US9106964B2 (en) 2012-09-13 2015-08-11 Verance Corporation Enhanced content distribution using advertisements
US8869222B2 (en) 2012-09-13 2014-10-21 Verance Corporation Second screen content
US9099080B2 (en) 2013-02-06 2015-08-04 Muzak Llc System for targeting location-based communications
US9262793B2 (en) 2013-03-14 2016-02-16 Verance Corporation Transactional video marking system
US9251549B2 (en) 2013-07-23 2016-02-02 Verance Corporation Watermark extractor enhancements based on payload ranking
US9208334B2 (en) 2013-10-25 2015-12-08 Verance Corporation Content management using multiple abstraction layers
US9824694B2 (en) 2013-12-05 2017-11-21 Tls Corp. Data carriage in encoded and pre-encoded audio bitstreams
US8918326B1 (en) * 2013-12-05 2014-12-23 The Telos Alliance Feedback and simulation regarding detectability of a watermark message
EP3117626A4 (en) 2014-03-13 2017-10-25 Verance Corporation Interactive content acquisition using embedded codes
US9130685B1 (en) 2015-04-14 2015-09-08 Tls Corp. Optimizing parameters in deployed systems operating in delayed feedback real world environments
US9454343B1 (en) 2015-07-20 2016-09-27 Tls Corp. Creating spectral wells for inserting watermarks in audio signals
US9626977B2 (en) 2015-07-24 2017-04-18 Tls Corp. Inserting watermarks into audio signals that have speech-like properties
US10115404B2 (en) 2015-07-24 2018-10-30 Tls Corp. Redundancy in watermarking audio signals that have speech-like properties
WO2017019105A1 (en) * 2015-07-30 2017-02-02 Hewlett-Packard Development Company, L.P. Embedding a pattern in output content
CN111402109A (en) * 2020-03-07 2020-07-10 北京北信源软件股份有限公司 Method and device for setting digital watermark of instant messaging user interface
CN112968766A (en) * 2021-01-29 2021-06-15 电子科技大学 Key negotiation method and system
CN113691885B (en) * 2021-09-09 2024-01-30 深圳万兴软件有限公司 Video watermark removal method and device, computer equipment and storage medium
US11763850B1 (en) 2022-08-30 2023-09-19 Motorola Solutions, Inc. System and method for eliminating bias in selectively edited video

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5237611A (en) * 1992-07-23 1993-08-17 Crest Industries, Inc. Encryption/decryption apparatus with non-accessible table of keys
US6523113B1 (en) * 1998-06-09 2003-02-18 Apple Computer, Inc. Method and apparatus for copy protection
US20050120220A1 (en) * 2001-12-21 2005-06-02 Oostveen Job C. Increasing integrity of watermarks using robust features
US7007166B1 (en) * 1994-12-28 2006-02-28 Wistaria Trading, Inc. Method and system for digital watermarking
US7142691B2 (en) * 2000-03-18 2006-11-28 Digimarc Corporation Watermark embedding functions in rendering description files
US7206649B2 (en) * 2003-07-15 2007-04-17 Microsoft Corporation Audio watermarking with dual watermarks
US7231061B2 (en) * 2002-01-22 2007-06-12 Digimarc Corporation Adaptive prediction filtering for digital watermarking
US7321666B2 (en) * 2002-11-08 2008-01-22 Sanyo Electric Co., Ltd. Multilayered digital watermarking system

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6427012B1 (en) * 1997-05-19 2002-07-30 Verance Corporation Apparatus and method for embedding and extracting information in analog signals using replica modulation
WO1998053565A1 (en) * 1997-05-19 1998-11-26 Aris Technologies, Inc. Apparatus and method for embedding and extracting information in analog signals using distributed signal features
JP3673664B2 (en) * 1998-01-30 2005-07-20 キヤノン株式会社 Data processing apparatus, data processing method, and storage medium
JP3156667B2 (en) * 1998-06-01 2001-04-16 日本電気株式会社 Digital watermark insertion system, digital watermark characteristic table creation device
JP3722995B2 (en) * 1998-08-21 2005-11-30 株式会社メガチップス Watermark encoding method and decoding method
US7373513B2 (en) * 1998-09-25 2008-05-13 Digimarc Corporation Transmarking of multimedia signals
JP4240614B2 (en) * 1998-12-04 2009-03-18 キヤノン株式会社 Embedded device and computer-readable storage medium
US7162642B2 (en) * 1999-01-06 2007-01-09 Digital Video Express, L.P. Digital content distribution system and method
JP2001119555A (en) * 1999-10-19 2001-04-27 Kowa Co Electronic watermark for time series processed linear data
EP1098522A1 (en) * 1999-11-05 2001-05-09 Sony United Kingdom Limited Method and apparatus for identifying a digital signal with a watermark
JP2001218006A (en) * 2000-01-31 2001-08-10 Canon Inc Picture processor, picture processing method and storage medium
JP2002010057A (en) * 2000-06-20 2002-01-11 Ricoh Co Ltd Color image forming device
JP2002027223A (en) * 2000-07-05 2002-01-25 Konica Corp Data processing device and data controlling system
JP3691415B2 (en) * 2000-09-01 2005-09-07 松下電器産業株式会社 REPRODUCTION DEVICE, REPRODUCTION DEVICE SPECIFICING DEVICE, AND METHOD THEREOF
JP3511502B2 (en) * 2000-09-05 2004-03-29 インターナショナル・ビジネス・マシーンズ・コーポレーション Data processing detection system, additional information embedding device, additional information detection device, digital content, music content processing device, additional data embedding method, content processing detection method, storage medium, and program transmission device
JP4346809B2 (en) * 2000-10-19 2009-10-21 エヌ・ティ・ティ・ソフトウェア株式会社 Digital watermark information detection method
JP2002232693A (en) * 2001-02-02 2002-08-16 Ntt Electornics Corp Method and system for managing digital watermark, digital watermark embedding processor, digital watermark detection processor, recording medium with digital watermark management program recorded, recording medium with contents including electronic watermark recorded, electronic data delivery management device, and characteristic adjustment device for electronic data transmission
JP2003008873A (en) * 2001-06-21 2003-01-10 Nippon Telegr & Teleph Corp <Ntt> Method and device for electronic key management
JP2003039770A (en) * 2001-07-27 2003-02-13 Canon Inc Image processor and its controlling method
JP3902536B2 (en) * 2001-11-28 2007-04-11 日本ビクター株式会社 Variable length data encoding method and variable length data encoding apparatus
US7392392B2 (en) * 2001-12-13 2008-06-24 Digimarc Corporation Forensic digital watermarking with variable orientation and protocols
JP4107851B2 (en) * 2002-02-13 2008-06-25 三洋電機株式会社 Digital watermark embedding method and encoding device and decoding device capable of using the method
JP4186531B2 (en) * 2002-03-25 2008-11-26 富士ゼロックス株式会社 Data embedding method, data extracting method, data embedding extracting method, and system
KR100888589B1 (en) * 2002-06-18 2009-03-16 삼성전자주식회사 Method and apparatus for extracting watermark from repeatedly watermarked original information
JP4266677B2 (en) * 2002-09-20 2009-05-20 三洋電機株式会社 Digital watermark embedding method and encoding device and decoding device capable of using the method
KR100624751B1 (en) * 2003-04-25 2006-09-19 (주)마크텍 A method for embedding watermark into an image and digital video recoreder using said method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5237611A (en) * 1992-07-23 1993-08-17 Crest Industries, Inc. Encryption/decryption apparatus with non-accessible table of keys
US7007166B1 (en) * 1994-12-28 2006-02-28 Wistaria Trading, Inc. Method and system for digital watermarking
US6523113B1 (en) * 1998-06-09 2003-02-18 Apple Computer, Inc. Method and apparatus for copy protection
US7142691B2 (en) * 2000-03-18 2006-11-28 Digimarc Corporation Watermark embedding functions in rendering description files
US20050120220A1 (en) * 2001-12-21 2005-06-02 Oostveen Job C. Increasing integrity of watermarks using robust features
US7231061B2 (en) * 2002-01-22 2007-06-12 Digimarc Corporation Adaptive prediction filtering for digital watermarking
US7321666B2 (en) * 2002-11-08 2008-01-22 Sanyo Electric Co., Ltd. Multilayered digital watermarking system
US7206649B2 (en) * 2003-07-15 2007-04-17 Microsoft Corporation Audio watermarking with dual watermarks

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
See also references of EP1880344A4 *
SHIH ET AL.: "Combinational image watermarking in the spatial and frequency domains", 2002, ELSEVIER SCIENCE LTD., XP008124720 *
SOLANKI ET AL.: "Robust Image-Adaptive Data Hiding: Modeling, Source Coding and Chanel Coding", 41ST ALLERTON CONFERENCE ON COMMUNICATIONS, CONTROL AND COMPUTING, October 2003 (2003-10-01), XP008123613 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107295351A (en) * 2017-07-17 2017-10-24 浙江师范大学 It is a kind of that symmetrical asymmetric encryption and decryption method and system is carried out to image
CN107295351B (en) * 2017-07-17 2021-04-13 浙江师范大学 Method and system for symmetrically-asymmetrically encrypting and decrypting image

Also Published As

Publication number Publication date
CA2605641A1 (en) 2006-11-02
JP2013138498A (en) 2013-07-11
EP1880344A4 (en) 2012-12-05
EP1880344A2 (en) 2008-01-23
WO2006116270A2 (en) 2006-11-02
JP2008539669A (en) 2008-11-13
JP5596193B2 (en) 2014-09-24
JP5283732B2 (en) 2013-09-04
JP2011229156A (en) 2011-11-10
JP5165555B2 (en) 2013-03-21

Similar Documents

Publication Publication Date Title
WO2006116270A3 (en) Security enhancements of digital watermarks for multi-media content
WO2008013894A3 (en) Signal continuity assessment using embedded watermarks
TW200746828A (en) Watermarking encoded content
EP2206273A4 (en) Method, device and system for dynamically embedding watermark information into multimedia content
EP1713248A4 (en) Electronic watermark embedding device, electronic watermark detection device, method thereof, and program
WO2006116394A3 (en) System reactions to the detection of embedded watermarks in a digital host content
EP2433391A4 (en) Combined watermarking and fingerprinting
AU2003259108A1 (en) Watermarking and fingerprinting digital content using alternative blocks to embed information
WO2006055480A3 (en) Techniques to manage digital media
EP2240937A4 (en) System, method and memory device providing data scrambling compatible with on-chip copy operation
EP2083571A4 (en) Dynamic image encoding method, decoding method, device thereof, program thereof, and storage medium containing the program
EP2310983A4 (en) Efficient watermarking approaches of compressed media
WO2011031447A3 (en) Instrumented swellable element
EP2088780A4 (en) Electronic device, content reproducing method, and content decoding method
HK1138391A1 (en) Method and system for unauthorized content detection and reporting
WO2008097918A3 (en) System and method for audio encoding and counterfeit tracking a motion picture
EP1972122A4 (en) Security management method and apparatus in multimedia middleware, and storage medium therefor
WO2005074597A3 (en) System and method for protecting digital works using a watermark gateway
ZA201302800B (en) Watermark generator, watermark decoder, method for providing a watermarked signal based on discrete valued data and method for providing discrete valued data in dependence on a watermarked signal
EP1865459A4 (en) The method of digital watermark and the corresponding device, and digital camera which can append watermark
WO2007077074A3 (en) Method and device for generating a marked data flow, method and device for inserting a watermark into a marked data flow, and marked data flow
WO2003090395A3 (en) Method and system for watermarking digital content and for introducing failure points into digital content
WO2009028091A1 (en) Digital watermark embedding device, digital watermark detecting device, and program
WO2009047833A1 (en) Electronic watermark embedding method, electronic watermark embedding apparatus, program, and computer-readable recording medium
WO2005071513A3 (en) Method and apparatus for protection of content using biometric watermarks

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 2605641

Country of ref document: CA

ENP Entry into the national phase

Ref document number: 2008508985

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2006758537

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: RU