Title:
METHOD FOR GENERATING VARIABLE GUILLOCHE PATTERNS, IMPLEMENTING DEVICE AND IDENTIFICATION DOCUMENT COMPRISING SUCH PATTERNS
Document Type and Number:
WIPO Patent Application WO/2019/064286
Kind Code:
A3
Abstract:
The invention relates to a method for generating 1 D guilloche patterns able to be affixed on a document, each guilloche pattern (201 -228) being able to encode variable alphanumeric data providing a different appearance to each guilloche pattern, the method comprising the following operations: formatting (420) alphanumeric data (410) to be encoded in the form of a predefined number of data blocks with a predefined size; generating a carrier function (430) comprising a plurality of parameters, the formatted data blocks forming at least one of the parameters; and modulating (450) the carrier function by the formatted data blocks so as to encode the alphanumeric data (410) graphically, each data block defining a guilloche pattern (201 -228), the number of data blocks (n) defining the number of guilloche patterns, the carrier function associated with a formatted data block is modulated locally, each datum of the block being encoded locally in the guilloche pattern, by interpolation of a predefined point associated with the carrier function.
Inventors:
LEIBENGUTH JOSEPH (FR)
FOURNEL THIERRY (FR)
COLTUC DINU (FR)
FOURNEL THIERRY (FR)
COLTUC DINU (FR)
Application Number:
PCT/IB2018/057608
Publication Date:
May 09, 2019
Filing Date:
October 01, 2018
Export Citation:
Assignee:
GEMALTO SA (FR)
CENTRE NAT RECH SCIENT (FR)
UNIV JEAN MONNET SAINT ETTIENNE (FR)
CENTRE NAT RECH SCIENT (FR)
UNIV JEAN MONNET SAINT ETTIENNE (FR)
International Classes:
B42D25/337; G06K9/00; H04N1/32
Domestic Patent References:
| WO2007121726A2 | 2007-11-01 | |||
| WO2014060700A1 | 2014-04-24 |
Foreign References:
| EP2325022A1 | 2011-05-25 |
Attorney, Agent or Firm:
LOTAUT, Yacine (FR)
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