AU2003202778A1 - Double watermarks - Google Patents

Double watermarks

Info

Publication number
AU2003202778A1
AU2003202778A1 AU2003202778A AU2003202778A AU2003202778A1 AU 2003202778 A1 AU2003202778 A1 AU 2003202778A1 AU 2003202778 A AU2003202778 A AU 2003202778A AU 2003202778 A AU2003202778 A AU 2003202778A AU 2003202778 A1 AU2003202778 A1 AU 2003202778A1
Authority
AU
Australia
Prior art keywords
watermarks
double
double watermarks
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.)
Abandoned
Application number
AU2003202778A
Inventor
Arnoldus W. J. Oomen
Menno A. Treffers
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of AU2003202778A1 publication Critical patent/AU2003202778A1/en
Abandoned 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Television Systems (AREA)
  • Image Processing (AREA)
AU2003202778A 2002-03-06 2003-02-07 Double watermarks Abandoned AU2003202778A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP02075864.5 2002-03-06
EP02075864 2002-03-06
PCT/IB2003/000493 WO2003075272A2 (en) 2002-03-06 2003-02-07 Double watermarks

Publications (1)

Publication Number Publication Date
AU2003202778A1 true AU2003202778A1 (en) 2003-09-16

Family

ID=27771896

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2003202778A Abandoned AU2003202778A1 (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

Family Cites Families (7)

* 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
WO1999053428A1 (en) * 1998-04-16 1999-10-21 Digimarc Corporation Digital watermarking and banknotes
UA70360A (en) * 2000-02-01 2004-10-15 Конінклійке Філіпс Електронікс Н.В. Protection against unauthorized access to data by checking the completeness of the data set
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
JP3789069B2 (en) * 2000-02-29 2006-06-21 キヤノン株式会社 Digital watermark embedding apparatus and method, program and storage medium, and digital watermark extraction apparatus and method, program and storage medium
WO2001080169A1 (en) * 2000-04-17 2001-10-25 Digimarc Corporation Authentication of physical and electronic media objects using digital watermarks
US6996717B2 (en) * 2001-05-24 2006-02-07 Matsushita Electric Industrial Co., Ltd. Semi-fragile watermarking system for MPEG video authentication

Also Published As

Publication number Publication date
WO2003075272A2 (en) 2003-09-12
WO2003075272A3 (en) 2003-12-04

Similar Documents

Publication Publication Date Title
AU2002335152A1 (en) Robot-phone
AU2003247423A1 (en) Collusion-robust watermarking
AU2003267697A1 (en) Adaptive watermarking
AU2002367810A1 (en) Bis-transition-metal-chelate-probes
AU2003256230A1 (en) Watermarking
AU2002318053A1 (en) Suplier
AU2002368348A1 (en) Electrosomatogram
AU2002348964A1 (en) Snowbike
AU2002341221A1 (en) Honey-brandy
AU2003202778A1 (en) Double watermarks
GB0306047D0 (en) Double watermarking
AU2002344387A1 (en) Multifunction-pillow
AU2002100482A4 (en) Tail-gate-ezy
AU2002100655A4 (en) Armamulch
AU2002100498A4 (en) Linline
AU2002100508A4 (en) Photocard
AU2002100510A4 (en) Bottlenecker
AU2002100541A4 (en) Backmate
AU2002100602A4 (en) Bonsystem
AU2002100468A4 (en) Flexi-edger
AU2002100739A4 (en) Neuramax
AU2002100747A4 (en) Powersell
AU2002100957A4 (en) Sluggit
AU2002100280A4 (en) Proshoe
AU2002100160A4 (en) Oxidirator

Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase