Processing

Please wait...

Settings

Settings

1. WO2000039953 - METHOD AND APPARATUS FOR PROTECTING THE LEGITIMACY OF AN ARTICLE

Publication Number WO/2000/039953
Publication Date 06.07.2000
International Application No. PCT/SG1998/000108
International Filing Date 23.12.1998
Chapter 2 Demand Filed 21.06.2000
IPC
G06T 1/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
1General purpose image data processing
G07D 7/12 2006.01
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR OF VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing 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
06using wave or particle radiation
12Visible light, infra-red or ultraviolet radiation
G07F 7/12 2006.01
GPHYSICS
07CHECKING-DEVICES
FCOIN-FREED OR LIKE APPARATUS
7Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
08by coded identity card or credit card
12Card verification
G09B 5/00 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
5Electrically-operated educational appliances
H04N 1/32 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
32Circuits or arrangements for control or supervision between transmitter and receiver
CPC
G06T 1/0028
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
1General purpose image data processing
0021Image watermarking
0028Adaptive watermarking, e.g. Human Visual System [HVS]-based watermarking
G07D 7/0034
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing 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
003using security elements
0034using watermarks
G07F 7/08
GPHYSICS
07CHECKING-DEVICES
FCOIN-FREED OR LIKE APPARATUS
7Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
08by coded identity card or credit card ; or other personal identification means
G07F 7/125
GPHYSICS
07CHECKING-DEVICES
FCOIN-FREED OR LIKE APPARATUS
7Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
08by coded identity card or credit card ; or other personal identification means
12Card verification
125Offline card verification
G09B 5/00
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
5Electrically-operated educational appliances
H04N 1/32144
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
32Circuits or arrangements for control or supervision between transmitter and receiver ; or between image input and image output device
32101Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
32144embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
Applicants
  • KENT RIDGE DIGITAL LABS [SG/SG]; 21 Heng Mui Keng Terrace Singapore 119613, SG (AllExceptUS)
  • WU, Jiankang [CN/SG]; SG (UsOnly)
  • SUN, Qibin [CN/SG]; SG (UsOnly)
  • DENG, Huijie, Robert [SG/SG]; SG (UsOnly)
Inventors
  • WU, Jiankang; SG
  • SUN, Qibin; SG
  • DENG, Huijie, Robert; SG
Agents
  • SPRUSON & FERGUSON PTE LTD; 51 Bras Basah Road #02-03 Plaza by the Park Singapore 189554, SG
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR PROTECTING THE LEGITIMACY OF AN ARTICLE
(FR) PROCEDE ET APPAREIL DE PROTECTION DE LA LEGITIMITE D'UN ARTICLE
Abstract
(EN)
A method, an apparatus and a computer program product are disclosed for protecting the legitimacy of an article (100), and in particular an electronic document, against forgery or fraud. Such articles include passports, credit cards, bank notes, lottery tickets, secure forms. The method includes the following steps: several watermarks (204, 224, 244) are generated independently (304, 306, 308) by different cryptographic watermarking mechanisms controlled utilising information permanently associated within the article or product (100); and each watermark is embedded in a linked cryptographic manner (160, 162, 164). Subsequently, the watermarks can be scanned and digitised (410). The authenticity of the article (100) can be determined by verifying the correctness of extracted watermarks and the encryption links (160, 162, 164) among them. Also disclosed is a method of embedding an invisible watermark (714) in an official seal (712) incorporated in an electronic article or document (700).
(FR)
L'invention concerne un procédé, un appareil et un progiciel destinés à protéger la légitimité d'un article (100), en particulier un document électronique, contre la falsification et la fraude. Ces articles sont notamment les passeports, les cartes de crédit, les billets de banque, les billets de loteries et les formulaires protégés. Le procédé consiste à créer plusieurs filigranes (204, 224, 244) de manière indépendante (304, 306, 308) par différents mécanismes cryptographiques de filigrane contrôlés au moyen d'informations en permanence associées à l'intérieur de l'article ou du produit (100); et à intégrer chaque filigrane d'une manière cryptographique liée (160, 162, 164). Par la suite, les filigranes peuvent être explorés et numérisés (410). On peut établir l'authenticité de l'article (100) en vérifiant l'exactitude des filigranes et des liens de cryptage (160, 162, 164) entre eux. L'invention traite en outre d'un procédé d'intégration d'un filigrane invisible (174) dans un sceau officiel (712) incorporé dans un article ou document électronique (700).
Also published as
GBGB0116712.1
Latest bibliographic data on file with the International Bureau