CA2071795A1 - Images latentes a micro-impression dephasee - Google Patents

Images latentes a micro-impression dephasee

Info

Publication number
CA2071795A1
CA2071795A1 CA2071795A CA2071795A CA2071795A1 CA 2071795 A1 CA2071795 A1 CA 2071795A1 CA 2071795 A CA2071795 A CA 2071795A CA 2071795 A CA2071795 A CA 2071795A CA 2071795 A1 CA2071795 A1 CA 2071795A1
Authority
CA
Canada
Prior art keywords
viewed
characters
phase shifted
latent images
micro printing
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.)
Granted
Application number
CA2071795A
Other languages
English (en)
Other versions
CA2071795C (fr
Inventor
Trevor Merry
Alan R. Boate
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.)
Canadian Bank Note Co Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2071795A1 publication Critical patent/CA2071795A1/fr
Application granted granted Critical
Publication of CA2071795C publication Critical patent/CA2071795C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00—Printed matter
    • Y10S283/901—Concealed data

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Printing Methods (AREA)
  • Credit Cards Or The Like (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Projection-Type Copiers In General (AREA)
CA002071795A 1991-06-25 1992-06-22 Images latentes a micro-impression dephasee Expired - Fee Related CA2071795C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/720,392 1991-06-25
US07/720,392 US5178418A (en) 1991-06-25 1991-06-25 Latent images comprising phase shifted micro printing

Publications (2)

Publication Number Publication Date
CA2071795A1 true CA2071795A1 (fr) 1992-12-26
CA2071795C CA2071795C (fr) 1996-08-06

Family

ID=24893847

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002071795A Expired - Fee Related CA2071795C (fr) 1991-06-25 1992-06-22 Images latentes a micro-impression dephasee

Country Status (5)

Country Link
US (1) US5178418A (fr)
EP (1) EP0520363B1 (fr)
AT (1) ATE149022T1 (fr)
CA (1) CA2071795C (fr)
DE (1) DE69217512T2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001080512A2 (fr) 2000-04-19 2001-10-25 Canadian Bank Note Company, Limited Systeme de codage et de decodage d'image, et dispositif securise imprimable obtenu a partir dudit systeme
US6918616B2 (en) 2002-09-24 2005-07-19 Canadian Bank Note Company, Limited Printed security device and method

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US5291243A (en) * 1993-02-05 1994-03-01 Xerox Corporation System for electronically printing plural-color tamper-resistant documents
WO1995004665A1 (fr) * 1993-08-10 1995-02-16 Hardy Business Forms Limited Donnees imprimees incrustees, procede et appareil afferents
US5445418A (en) * 1993-09-08 1995-08-29 Moore Business Forms, Inc. Security paper/document construction
US5436974A (en) * 1993-10-12 1995-07-25 Innovator Corporation Method of encoding confidentiality markings
US5748763A (en) * 1993-11-18 1998-05-05 Digimarc Corporation Image steganography system featuring perceptually adaptive and globally scalable signal embedding
US6449377B1 (en) 1995-05-08 2002-09-10 Digimarc Corporation Methods and systems for watermark processing of line art images
US7286684B2 (en) * 1994-03-17 2007-10-23 Digimarc Corporation Secure document design carrying auxiliary machine readable information
US5661284A (en) * 1995-03-13 1997-08-26 Albert J. Freeman Commercial transaction system
US7555139B2 (en) * 1995-05-08 2009-06-30 Digimarc Corporation Secure documents with hidden signals, and related methods and systems
US6859534B1 (en) * 1995-11-29 2005-02-22 Alfred Alasia Digital anti-counterfeiting software method and apparatus
US7114750B1 (en) * 1995-11-29 2006-10-03 Graphic Security Systems Corporation Self-authenticating documents
GB2318324B (en) * 1996-10-19 2001-05-16 Xerox Corp Secure printing system
US5924737A (en) * 1996-12-12 1999-07-20 Young America Corporation Postcard check
US6104812A (en) * 1998-01-12 2000-08-15 Juratrade, Limited Anti-counterfeiting method and apparatus using digital screening
US7054463B2 (en) 1998-01-20 2006-05-30 Digimarc Corporation Data encoding using frail watermarks
GB2375254B (en) * 1998-04-16 2002-12-24 Digimarc Corp Marking documents with machine-readable data and watermarks
US7422244B1 (en) * 1998-06-03 2008-09-09 Digimarc Corporation Identification document with document specific reduced scale printing
US6325420B1 (en) 1998-08-17 2001-12-04 Inspectron Corporation Method for embedding non-intrusive encoded data in printed matter and system for reading same
US6301363B1 (en) 1998-10-26 2001-10-09 The Standard Register Company Security document including subtle image and system and method for viewing the same
US20030137145A1 (en) * 1999-01-08 2003-07-24 John Fell Authentication means
US6050607A (en) 1999-03-26 2000-04-18 The Standard Register Company Security image element tiling scheme
US6139066A (en) * 1999-03-26 2000-10-31 The Standard Register Company Optically decodable security document
DE19963849A1 (de) † 1999-12-30 2001-07-12 Giesecke & Devrient Gmbh Datenträger mit gedrucktem Sicherheitselement
DE10044403A1 (de) 2000-09-08 2002-03-21 Giesecke & Devrient Gmbh Datenträger mit Stichtiefdruckbild und Verfahren zur Umsetzung von Bildmotiven in Linienstrukturen sowie in eine Stichtiefdruckplatte
US6870841B1 (en) * 2000-09-18 2005-03-22 At&T Corp. Controlled transmission across packet network
JP4833425B2 (ja) * 2001-03-29 2011-12-07 共同印刷株式会社 偽造防止パターンの作成方法
GB0202962D0 (en) * 2002-02-08 2002-03-27 Ascent Systems Software Ltd Security printing
DE10208393A1 (de) * 2002-02-27 2003-09-04 Giesecke & Devrient Gmbh Sicherheitsdokument und Sicherheitselement für ein Sicherheitsdokument
AU2002951963A0 (en) * 2002-10-09 2002-10-24 Commonwealth Scientific And Industrial Research Organisation Method of combining images
JP4823890B2 (ja) * 2003-03-06 2011-11-24 ディジマーク コーポレイション ドキュメント認証方法
BRPI0408830A (pt) 2003-03-27 2006-04-04 Graphic Security Systems Corp sistema e método para autenticar objetos
AU2003902810A0 (en) * 2003-06-04 2003-06-26 Commonwealth Scientific And Industrial Research Organisation Method of encoding a latent image
DE10328760B4 (de) * 2003-06-25 2007-05-24 Ovd Kinegram Ag Optisches Sicherheitselement
DE10328759B4 (de) 2003-06-25 2006-11-30 Ovd Kinegram Ag Optisches Sicherheitselement und System zur Visualisierung von versteckten Informationen
WO2005006025A2 (fr) * 2003-06-30 2005-01-20 Graphic Security Systems Corporation Decodeur eclaire
AU2003903501A0 (en) * 2003-07-07 2003-07-24 Commonwealth Scientific And Industrial Research Organisation A method of forming a reflective authentication device
AU2003903502A0 (en) * 2003-07-07 2003-07-24 Commonwealth Scientific And Industrial Research Organisation A method of forming a diffractive authentication device
JP2007524281A (ja) * 2003-07-07 2007-08-23 コモンウェルス　サイエンティフィック　アンド　インダストリアル　リサーチ　オーガニゼーション 潜像の符号化方法
US6980654B2 (en) * 2003-09-05 2005-12-27 Graphic Security Systems Corporation System and method for authenticating an article
US7421581B2 (en) * 2003-09-30 2008-09-02 Graphic Security Systems Corporation Method and system for controlling encoded image production
GB2411862B (en) * 2004-03-11 2007-05-30 Security Print Solutions Ltd A printed material having security information printed thereon and a method of printing security information
US7551752B2 (en) * 2004-04-26 2009-06-23 Graphic Security Systems Corporation Systems and methods for authenticating objects using multiple-level image encoding and decoding
US7512249B2 (en) * 2004-04-26 2009-03-31 Graphic Security Systems Corporation System and method for decoding digital encoded images
US7630513B2 (en) 2004-04-26 2009-12-08 Graphic Security Systems Corporation System and method for network-based object authentication
US7729509B2 (en) * 2004-06-18 2010-06-01 Graphic Security Systems Corporation Illuminated lens device for use in object authentication
DE502004009829D1 (de) * 2004-09-09 2009-09-10 Alcan Tech & Man Ltd Gegenstand mit fälschungssicherer Bedruckung
DE602004019931D1 (de) * 2004-10-29 2009-04-23 Hueck Folien Gmbh Sicherheitselement
US20060197337A1 (en) * 2005-03-04 2006-09-07 Canadian Bank Note Company, Limited Identification document with lenticular watermark
GB2429187B (en) * 2005-08-15 2007-08-08 Rue De Int Ltd Security devices for security substrates
US7860268B2 (en) 2006-12-13 2010-12-28 Graphic Security Systems Corporation Object authentication using encoded images digitally stored on the object
US20090020999A1 (en) * 2007-07-17 2009-01-22 Jimmy Kendrick Security documents and methods of deterring counterfeiting
US20090315319A1 (en) * 2007-07-17 2009-12-24 Jimmy Kendrick Security documents and methods of deterring counterfeiting
US20090021000A1 (en) * 2007-07-17 2009-01-22 Mccartney Larry G Security documents and methods of deterring counterfeiting
JP5699313B2 (ja) * 2010-08-09 2015-04-08 大日本印刷株式会社 発光媒体
AU2011316688B2 (en) 2010-10-11 2014-10-23 Graphic Security Systems Corporation Method for constructing a composite image incorporating a hidden authentication image
MY184301A (en) 2011-02-22 2021-03-31 Sun Patent Trust Image coding method, image decoding method, image coding apparatus, image decoding apparatus, and image coding and decoding apparatus
BR112012021600B1 (pt) 2011-02-22 2021-02-09 Tagivan Ii Llc método de filtragem de desbloqueio para filtrar uma pluralidade de blocos incluídos em uma imagem, método e aparelho de codificação para codificar uma imagem
AU2012235850A1 (en) * 2011-03-29 2013-11-14 Jura Trade, Limited Method and apparatus for generating and authenticating security documents
CN103703774B (zh) 2011-07-19 2017-06-20 太格文-Ii有限责任公司 滤波方法、解码方法、以及编码方法
JP6334879B2 (ja) * 2013-10-01 2018-05-30 有限会社 みさとみらい２１ ノートブックおよびその製造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1066462B (de) * 1959-10-01 R. Oldenbourg, Graphische Betriebe G.m.b.H., München Verfahren zur Erhöhung des Fälschungsschutzes ein- oder mehrfarbig guillochierter Schutzlinienwerke
US3675948A (en) * 1969-09-10 1972-07-11 American Bank Note Co Printing method and article for hiding halftone images
CA1066109A (fr) * 1975-11-12 1979-11-13 Canadian Bank Note Company Simulation photographique de differences de densite sous forme de changements de direction de ligne
US4168088A (en) * 1977-12-15 1979-09-18 Burroughs Corporation Protected document and method of making the same
CA1172282A (fr) * 1980-09-22 1984-08-07 Trevor Merry Methode de surimpression d'images multiples
US4582346A (en) * 1984-05-08 1986-04-15 Moore Business Forms, Inc. Document security system
FI80405C (fi) * 1988-03-24 1990-06-11 Suomen Pankin Setelipaino Tryckalster saekerstaellt med varningsfigur och foerfarande foer dess utarbetning.
US4998010A (en) * 1988-04-08 1991-03-05 United Parcel Service Of America, Inc. Polygonal information encoding article, process and system
US4891666A (en) * 1988-11-28 1990-01-02 Quebecor Publitech Inc. Copy indicator for a document

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001080512A2 (fr) 2000-04-19 2001-10-25 Canadian Bank Note Company, Limited Systeme de codage et de decodage d'image, et dispositif securise imprimable obtenu a partir dudit systeme
US6918616B2 (en) 2002-09-24 2005-07-19 Canadian Bank Note Company, Limited Printed security device and method

Also Published As

Publication number Publication date
EP0520363A1 (fr) 1992-12-30
CA2071795C (fr) 1996-08-06
EP0520363B1 (fr) 1997-02-19
US5178418A (en) 1993-01-12
ATE149022T1 (de) 1997-03-15
DE69217512D1 (de) 1997-03-27
DE69217512T2 (de) 1997-06-05

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