WO2003075272A3 - Double watermarks - Google Patents

Double watermarks Download PDF

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Publication number
WO2003075272A3
WO2003075272A3 PCT/IB2003/000493 IB0300493W WO03075272A3 WO 2003075272 A3 WO2003075272 A3 WO 2003075272A3 IB 0300493 W IB0300493 W IB 0300493W WO 03075272 A3 WO03075272 A3 WO 03075272A3
Authority
WO
WIPO (PCT)
Prior art keywords
watermark
complexity
searched
watermarks
robust
Prior art date
Application number
PCT/IB2003/000493
Other languages
French (fr)
Other versions
WO2003075272A2 (en
Inventor
Arnoldus W J Oomen
Menno A Treffers
Original Assignee
Koninkl Philips Electronics Nv
Arnoldus W J Oomen
Menno A Treffers
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 Koninkl Philips Electronics Nv, Arnoldus W J Oomen, Menno A Treffers filed Critical Koninkl Philips Electronics Nv
Priority to AU2003202778A priority Critical patent/AU2003202778A1/en
Publication of WO2003075272A2 publication Critical patent/WO2003075272A2/en
Publication of WO2003075272A3 publication Critical patent/WO2003075272A3/en

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
    • G11B20/00905—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 multiple watermarks used in combination
    • 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

Abstract

A method, apparatus and signal for combining two robust watermarks, whereby a low complexity watermark is searched for first, and if not found, a second higher complexity watermark is searched for. The low complexity watermark is robust against a limited set of signal processing that can be expected by a 'friendly user' under normal conditions. The second higher complexity watermark is robust against all kinds of malicious attacks.
PCT/IB2003/000493 2002-03-06 2003-02-07 Double watermarks WO2003075272A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003202778A AU2003202778A1 (en) 2002-03-06 2003-02-07 Double watermarks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02075864.5 2002-03-06
EP02075864 2002-03-06

Publications (2)

Publication Number Publication Date
WO2003075272A2 WO2003075272A2 (en) 2003-09-12
WO2003075272A3 true WO2003075272A3 (en) 2003-12-04

Family

ID=27771896

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2003/000493 WO2003075272A2 (en) 2002-03-06 2003-02-07 Double watermarks

Country Status (2)

Country Link
AU (1) AU2003202778A1 (en)
WO (1) WO2003075272A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7228425B1 (en) 2000-02-07 2007-06-05 Koninklijke Philips Electronics N. V. Protecting content from illicit reproduction by proof of existence of a complete data set via self-referencing sections

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999053428A1 (en) * 1998-04-16 1999-10-21 Digimarc Corporation Digital watermarking and banknotes
WO2001057869A2 (en) * 2000-02-01 2001-08-09 Koninklijke Philips Electronics N.V. Protecting content from illicit reproduction by proof of existence of a complete data set
WO2001059705A2 (en) * 2000-02-07 2001-08-16 Koninklijke Philips Electronics N.V. Protecting content from illicit reproduction by proof of existence of a complete data set via self-referencing sections
US20010024510A1 (en) * 2000-02-29 2001-09-27 Keiichi Iwamura Digital content processing method
WO2001080169A1 (en) * 2000-04-17 2001-10-25 Digimarc Corporation Authentication of physical and electronic media objects using digital watermarks
US6345104B1 (en) * 1994-03-17 2002-02-05 Digimarc Corporation Digital watermarks and methods for security documents
US20020178368A1 (en) * 2001-05-24 2002-11-28 Peng Yin Semi-fragile watermarking system for MPEG video authentication

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6345104B1 (en) * 1994-03-17 2002-02-05 Digimarc Corporation Digital watermarks and methods for security documents
US20020080996A1 (en) * 1994-03-17 2002-06-27 Rhoads Geoffrey B. Digital watermarks and methods for security documents
WO1999053428A1 (en) * 1998-04-16 1999-10-21 Digimarc Corporation Digital watermarking and banknotes
WO2001057869A2 (en) * 2000-02-01 2001-08-09 Koninklijke Philips Electronics N.V. Protecting content from illicit reproduction by proof of existence of a complete data set
WO2001059705A2 (en) * 2000-02-07 2001-08-16 Koninklijke Philips Electronics N.V. Protecting content from illicit reproduction by proof of existence of a complete data set via self-referencing sections
US20010024510A1 (en) * 2000-02-29 2001-09-27 Keiichi Iwamura Digital content processing method
WO2001080169A1 (en) * 2000-04-17 2001-10-25 Digimarc Corporation Authentication of physical and electronic media objects using digital watermarks
US20020178368A1 (en) * 2001-05-24 2002-11-28 Peng Yin Semi-fragile watermarking system for MPEG video authentication

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
"SDMI SECURE DIGITAL MUSIC INITIATIVE", SDMI PORTABLE DEVICE SPECIFICATION VERSION 1.0, XX, XX, no. PART 1, 8 July 1999 (1999-07-08), pages 1 - 35, XP000997330 *
ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS PEKINENSIS, vol. 37, no. 3, May 2001 (2001-05-01), Acta Sci. Nat. Univ. Pekin. (China), Acta Scientiarum Naturalium Universitatis Pekinensis, May 2001, Peking University Press, China, pages 305 - 314, ISSN: 0479-8023 *
DATABASE INSPEC [online] THE INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB; May 2001 (2001-05-01), HUA XIANSHENG ET AL: "To embed multiple watermarks simultaneously", XP002253046, Database accession no. 6978544 *
MINTZER F ET AL: "IF ONE WATERMARK IS GOOD, ARE MORE BETTER?", 1999 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING. PHOENIX, AZ, MARCH 15 - 19, 1999, IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP), NEW YORK, NY : IEEE, US, vol. VOL. 6, 1999, pages 2067 - 2069, XP000974584, ISBN: 0-7803-5042-1 *
SDMI: "Amendment 1 to SDMI Portable Device Specification, Part I, Version 1.0", 23 September 1999 (1999-09-23), BROOKLYN, XP002253048, Retrieved from the Internet <URL:http://www.sdmi.org/download/port_device_spec_amend1.pdf> [retrieved on 20030825] *
SDMI: "Amendment 2 to SDMI Portable Device Specification, Part I, Version 1.0", 13 October 2000 (2000-10-13), LOS ANGELES, XP002253047, Retrieved from the Internet <URL:http://www.sdmi.org/download/port_device_spec_amend2.pdf> [retrieved on 20030825] *

Also Published As

Publication number Publication date
WO2003075272A2 (en) 2003-09-12
AU2003202778A1 (en) 2003-09-16

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