CN104115480B - 安全单元以及检查印刷内容的真实性的方法 - Google Patents
安全单元以及检查印刷内容的真实性的方法 Download PDFInfo
- Publication number
- CN104115480B CN104115480B CN201380009395.5A CN201380009395A CN104115480B CN 104115480 B CN104115480 B CN 104115480B CN 201380009395 A CN201380009395 A CN 201380009395A CN 104115480 B CN104115480 B CN 104115480B
- Authority
- CN
- China
- Prior art keywords
- printed
- code
- image
- security element
- information
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06018—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking one-dimensional coding
- G06K19/06028—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking one-dimensional coding using bar codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3226—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using a predetermined code, e.g. password, passphrase or PIN
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06046—Constructional details
- G06K19/06056—Constructional details the marking comprising a further embedded marking, e.g. a 1D bar code with the black bars containing a smaller sized coding
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
- G06T1/005—Robust watermarking, e.g. average attack or collusion attack resistant
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/26—Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/80—Recognising image objects characterised by unique random patterns
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/22—Character recognition characterised by the type of writing
- G06V30/224—Character recognition characterised by the type of writing of printed characters having additional code marks or containing code marks
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/40—Document-oriented image-based pattern recognition
- G06V30/41—Analysis of document content
- G06V30/413—Classification of content, e.g. text, photographs or tables
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/005—Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations
- G07D7/0054—Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations involving markings the properties of which are altered from original properties
- G07D7/0056—Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations involving markings the properties of which are altered from original properties involving markings of altered colours
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/20—Testing patterns thereon
- G07D7/202—Testing patterns thereon using pattern matching
- G07D7/2041—Matching statistical distributions, e.g. of particle sizes orientations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits 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
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, 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
- H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
- H04N1/32203—Spatial or amplitude domain methods
- H04N1/32251—Spatial or amplitude domain methods in multilevel data, e.g. greyscale or continuous tone data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits 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
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, 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
- H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
- H04N1/3232—Robust embedding or watermarking
- H04N1/32325—Robust embedding or watermarking the embedded data being visible
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits 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
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, 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
- H04N1/32352—Controlling detectability or arrangements to facilitate detection or retrieval of the embedded information, e.g. using markers
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2201/00—General purpose image data processing
- G06T2201/005—Image watermarking
- G06T2201/0051—Embedding of the watermark in the spatial domain
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2201/00—General purpose image data processing
- G06T2201/005—Image watermarking
- G06T2201/0062—Embedding of the watermark in text images, e.g. watermarking text documents using letter skew, letter distance or row distance
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2201/00—General purpose image data processing
- G06T2201/005—Image watermarking
- G06T2201/0065—Extraction of an embedded watermark; Reliable detection
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/95—Pattern authentication; Markers therefor; Forgery detection
Landscapes
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Computer Security & Cryptography (AREA)
- Artificial Intelligence (AREA)
- Computer Networks & Wireless Communication (AREA)
- Printing Methods (AREA)
- Credit Cards Or The Like (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU1200097A HUP1200097A2 (hu) | 2012-02-15 | 2012-02-15 | Biztonsági elem és eljárás nyomat eredetiség ellenõrzésére |
| HUP1200097 | 2012-02-15 | ||
| PCT/IB2013/051260 WO2013121401A2 (en) | 2012-02-15 | 2013-02-15 | Security element and method to inspect authenticity of a print |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104115480A CN104115480A (zh) | 2014-10-22 |
| CN104115480B true CN104115480B (zh) | 2017-10-27 |
Family
ID=89990612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380009395.5A Active CN104115480B (zh) | 2012-02-15 | 2013-02-15 | 安全单元以及检查印刷内容的真实性的方法 |
Country Status (21)
| Country | Link |
|---|---|
| US (1) | US9594994B2 (https=) |
| EP (1) | EP2815567B1 (https=) |
| JP (1) | JP6765783B2 (https=) |
| KR (1) | KR101712167B1 (https=) |
| CN (1) | CN104115480B (https=) |
| AU (1) | AU2013220001B2 (https=) |
| BR (1) | BR112014020232B1 (https=) |
| CA (1) | CA2864486C (https=) |
| CL (1) | CL2014002182A1 (https=) |
| EA (1) | EA027635B1 (https=) |
| ES (1) | ES2791399T3 (https=) |
| HU (2) | HUP1200097A2 (https=) |
| IL (1) | IL233973A (https=) |
| MX (1) | MX2014009891A (https=) |
| MY (1) | MY172512A (https=) |
| NZ (1) | NZ629838A (https=) |
| PE (1) | PE20142203A1 (https=) |
| SG (1) | SG11201404639TA (https=) |
| UA (1) | UA115779C2 (https=) |
| WO (1) | WO2013121401A2 (https=) |
| ZA (1) | ZA201406460B (https=) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2681696C2 (ru) * | 2013-11-07 | 2019-03-12 | Скантраст Са | Двухмерный штрихкод и способ аутентификации штрихкода |
| US20150183257A1 (en) * | 2013-12-31 | 2015-07-02 | I-Property Holding Corp. | Verification Of Pharmaceutical Product Packaging To Prevent Counterfeits, Using Hidden Security Features Revealed With A Laser Pointer |
| US9443180B2 (en) | 2014-03-03 | 2016-09-13 | Nthdegree Technologies Worldwide Inc. | Security label using printed LEDs |
| WO2016081152A1 (en) * | 2014-11-18 | 2016-05-26 | Nthdegree Technologies Worldwide Inc. | Security label using printed leds |
| EP3166048A1 (en) * | 2015-11-06 | 2017-05-10 | ams AG | Optical reader device, tag for use on a disposable or replaceable component, optical data validation system and method for optical data validation |
| MY198231A (en) * | 2016-03-23 | 2023-08-15 | Sony Corp | Information Processing Device And Information Processing Method |
| CN108537077B (zh) * | 2017-03-06 | 2023-07-14 | 手持产品公司 | 用于条形码检验的系统和方法 |
| TWI770123B (zh) * | 2017-03-13 | 2022-07-11 | 日商佐藤控股股份有限公司 | 信息處理裝置、程式、信息處理方法以及信息處理系統 |
| WO2018204319A1 (en) * | 2017-05-01 | 2018-11-08 | I-Property Holding Corp. | Authentication system for use with pharmaceuticals |
| WO2019044972A1 (ja) * | 2017-09-01 | 2019-03-07 | 日本電気株式会社 | 入退場管理システム、入退場管理方法、情報処理装置および記録媒体 |
| DE102017128258A1 (de) * | 2017-09-14 | 2019-03-14 | Schattdecor Ag | Verfahren zum Herstellen und Schützen gegen unzulässige Vervielfältigung von Dekorpapier oder -folien |
| CN108229457A (zh) * | 2017-12-14 | 2018-06-29 | 深圳市商汤科技有限公司 | 证件的验证方法、装置、电子设备和存储介质 |
| DE102018115146A1 (de) | 2018-06-24 | 2019-12-24 | Industry365 Ug (Haftungsbeschränkt) | Verfahren zur Herstellung für das menschliche Auge nicht sichtbarer und nicht kopierbarer Sicherheitselemente in einer Abbildung sowie Verfahren zum Authentizitätsnachweis von Produkten auf Basis des Abgleichs von ungleichen Informationen sowie gedruckte Abbildung |
| ES2894300T3 (es) | 2018-11-20 | 2022-02-14 | Flooring Ind Ltd Sarl | Papel o película de decoración |
| DE102019132518A1 (de) | 2019-11-29 | 2021-06-02 | Schreiner Group Gmbh & Co. Kg | Verfahren zur Prüfung einer rasterförmig bedruckten und/oder gestalteten Oberfläche eines Gegenstands und Gegenstand |
| US12482140B2 (en) | 2023-01-13 | 2025-11-25 | Xerox Corporation | Methods and systems for encoding data using artificial fingerprints |
| US12456316B2 (en) * | 2023-08-07 | 2025-10-28 | Xerox Corporation | Methods and systems for document authentication using ink satellites |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997020298A1 (en) * | 1995-11-29 | 1997-06-05 | Graphic Security Systems Corporation | Digital anti-counterfeiting software method and apparatus |
| CN1249715A (zh) * | 1997-03-04 | 2000-04-05 | 联邦印刷有限公司 | 带有发光防伪元件的有价制品和防伪制品和制造该制品的方法以及视觉和机械真实性检验的装置 |
| CN1475001A (zh) * | 2000-09-20 | 2004-02-11 | ����˹������ά�ǹɷݹ�˾ | 用于预防伪造或改变印刷面或雕刻面的方法 |
| CN1631030A (zh) * | 1998-07-31 | 2005-06-22 | 数字标记公司 | 重要文件的数字水印与方法 |
| CN101553761A (zh) * | 2006-11-14 | 2009-10-07 | 证券票据国际私人有限公司 | 用于防止安全文件伪造的方法 |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5189292A (en) * | 1990-10-30 | 1993-02-23 | Omniplanar, Inc. | Finder pattern for optically encoded machine readable symbols |
| US6104812A (en) * | 1998-01-12 | 2000-08-15 | Juratrade, Limited | Anti-counterfeiting method and apparatus using digital screening |
| US6571001B2 (en) | 1998-06-10 | 2003-05-27 | Micron Technology, Inc. | System for detecting photocopied or laser-printed documents |
| EP2006796A3 (en) * | 2000-06-05 | 2009-06-17 | Optaglio Limited | Product verification and authentication system and method |
| US6952485B1 (en) | 2000-09-11 | 2005-10-04 | Digimarc Corporation | Watermark encoding and decoding in imaging devices and imaging device interfaces |
| GB0031016D0 (en) * | 2000-12-20 | 2001-01-31 | Alphafox Systems Ltd | Security systems |
| DE10162050A1 (de) * | 2001-12-17 | 2003-07-03 | Giesecke & Devrient Gmbh | Wertdokument |
| JP2004153405A (ja) * | 2002-10-29 | 2004-05-27 | Fuji Xerox Co Ltd | 書類確認方法及び装置 |
| DE102005011612A1 (de) | 2004-08-13 | 2006-02-23 | Giesecke & Devrient Gmbh | Datenträger mit einer optisch variablen Struktur |
| DE102004049118A1 (de) | 2004-10-07 | 2006-04-13 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| DE102005005615A1 (de) | 2005-02-08 | 2006-10-05 | Giesecke & Devrient Gmbh | Sichern von Information |
| US7949148B2 (en) * | 2006-01-23 | 2011-05-24 | Digimarc Corporation | Object processing employing movement |
| JP2007272541A (ja) * | 2006-03-31 | 2007-10-18 | Fuji Xerox Co Ltd | 真贋がチェックされる検査対象物、固有情報登録装置、及び真贋判定装置 |
| DE102006016118A1 (de) | 2006-04-04 | 2007-10-11 | Giesecke & Devrient Gmbh | Sicherheitselement |
| EP1844929A1 (fr) * | 2006-04-13 | 2007-10-17 | Kba-Giori S.A. | Procédé de génération de motifs représentant une image en demi-teintes |
| JP4831320B2 (ja) * | 2006-04-24 | 2011-12-07 | 大日本印刷株式会社 | 真贋識別構造 |
| US8050502B2 (en) * | 2006-06-21 | 2011-11-01 | Namco Bandai Games Inc. | Two-Dimensional code generation method, two-dimensional code, two-dimensional code recognition method, and image recognition device |
| GB0702092D0 (en) * | 2007-02-02 | 2007-03-14 | Fracture Code Corp Aps | Graphic Code Application Apparatus and Method |
| JP5179112B2 (ja) | 2007-08-02 | 2013-04-10 | 小林クリエイト株式会社 | 偽造防止帳票 |
| US7907778B2 (en) * | 2007-08-13 | 2011-03-15 | Seiko Epson Corporation | Segmentation-based image labeling |
| FR2962828B1 (fr) | 2010-07-19 | 2012-08-17 | Advanced Track & Trace | Procedes et dispositifs de marquage et d'authentification d'un produit par un consommateur. |
| RU2430836C1 (ru) | 2010-07-29 | 2011-10-10 | Федеральное Государственное Унитарное Предприятие "Гознак" (Фгуп "Гознак") | Многослойный защитный элемент с переменным оптическим эффектом и защищенный от подделки документ |
| US9378445B2 (en) * | 2011-06-17 | 2016-06-28 | I-Property Holding Corp. | 3D laser coding in glass |
| BR112014011486B1 (pt) * | 2011-11-15 | 2021-12-14 | Société des Produits Nestlé S.A. | Suporte de código oticamente legível, cápsula compreendendo um suporte de código opticamente legível e cápsula edentada para suprir uma bebida |
| US9619310B2 (en) | 2012-09-26 | 2017-04-11 | Honeywell International Inc. | High speed data transmission methods and systems upon error detection |
-
2012
- 2012-02-15 HU HU1200097A patent/HUP1200097A2/hu unknown
-
2013
- 2013-02-15 WO PCT/IB2013/051260 patent/WO2013121401A2/en not_active Ceased
- 2013-02-15 BR BR112014020232-0A patent/BR112014020232B1/pt active IP Right Grant
- 2013-02-15 KR KR1020147025709A patent/KR101712167B1/ko active Active
- 2013-02-15 PE PE2014001268A patent/PE20142203A1/es active IP Right Grant
- 2013-02-15 EA EA201491491A patent/EA027635B1/ru unknown
- 2013-02-15 SG SG11201404639TA patent/SG11201404639TA/en unknown
- 2013-02-15 JP JP2014557161A patent/JP6765783B2/ja active Active
- 2013-02-15 HU HUE13721389A patent/HUE049577T2/hu unknown
- 2013-02-15 CA CA2864486A patent/CA2864486C/en active Active
- 2013-02-15 MY MYPI2014702239A patent/MY172512A/en unknown
- 2013-02-15 US US14/378,901 patent/US9594994B2/en active Active
- 2013-02-15 ES ES13721389T patent/ES2791399T3/es active Active
- 2013-02-15 UA UAA201409980A patent/UA115779C2/uk unknown
- 2013-02-15 AU AU2013220001A patent/AU2013220001B2/en active Active
- 2013-02-15 EP EP13721389.8A patent/EP2815567B1/en active Active
- 2013-02-15 NZ NZ629838A patent/NZ629838A/en unknown
- 2013-02-15 MX MX2014009891A patent/MX2014009891A/es active IP Right Grant
- 2013-02-15 CN CN201380009395.5A patent/CN104115480B/zh active Active
-
2014
- 2014-08-06 IL IL233973A patent/IL233973A/en active IP Right Grant
- 2014-08-14 CL CL2014002182A patent/CL2014002182A1/es unknown
- 2014-09-03 ZA ZA2014/06460A patent/ZA201406460B/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997020298A1 (en) * | 1995-11-29 | 1997-06-05 | Graphic Security Systems Corporation | Digital anti-counterfeiting software method and apparatus |
| CN1249715A (zh) * | 1997-03-04 | 2000-04-05 | 联邦印刷有限公司 | 带有发光防伪元件的有价制品和防伪制品和制造该制品的方法以及视觉和机械真实性检验的装置 |
| CN1631030A (zh) * | 1998-07-31 | 2005-06-22 | 数字标记公司 | 重要文件的数字水印与方法 |
| CN1475001A (zh) * | 2000-09-20 | 2004-02-11 | ����˹������ά�ǹɷݹ�˾ | 用于预防伪造或改变印刷面或雕刻面的方法 |
| CN101553761A (zh) * | 2006-11-14 | 2009-10-07 | 证券票据国际私人有限公司 | 用于防止安全文件伪造的方法 |
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