EP 2614411 A1 20130717 - ENCRYPTED SYNTHETIC HOLOGRAM AND METHOD FOR READING SUCH A HOLOGRAM
Title (en)
ENCRYPTED SYNTHETIC HOLOGRAM AND METHOD FOR READING SUCH A HOLOGRAM
Title (de)
VERSCHLÜSSELTES SYNTHETISCHES HOLOGRAMM UND VERFAHREN ZUM LESEN EINES DERARTIGEN HOLOGRAMMS
Title (fr)
HOLOGRAMME SYNTHETIQUE CRYPTE ET PROCEDE DE LECTURE D'UN TEL HOLOGRAMME
Publication
Application
Priority
- FR 1057126 A 20100908
- FR 2011052054 W 20110908
Abstract (en)
[origin: WO2012032266A1] The invention relates to an encrypted synthetic hologram formed from the Fourier transformation of an image (40) and consisting of a matrix of elementary cells. Half of the elementary cells, with a 10% margin, selected according to a motif (52), are dephased in relation to the elementary cells of a hologram directly produced by the Fourier transformation of the image.
IPC 8 full level
G03H 1/08 (2006.01)
CPC (source: EP US)
G03H 1/0011 (2013.01 - EP US); G03H 1/08 (2013.01 - EP US); G03H 2001/0022 (2013.01 - EP US); G03H 2001/085 (2013.01 - EP US); G03H 2210/52 (2013.01 - EP US); G03H 2210/53 (2013.01 - EP US); G03H 2210/54 (2013.01 - EP US); G03H 2223/13 (2013.01 - EP US); Y10T 29/49 (2015.01 - EP US)
Citation (search report)
See references of WO 2012032266A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
FR 2964474 A1 20120309; FR 2964474 B1 20130517; EP 2614411 A1 20130717; US 2013301091 A1 20131114; WO 2012032266 A1 20120315
DOCDB simple family (application)
FR 1057126 A 20100908; EP 11773490 A 20110908; FR 2011052054 W 20110908; US 201113821485 A 20110908