Card type recording medium, certifying method and apparatus...

G - Physics – 06 – K

Patent

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G06K 19/073 (2006.01) G07C 9/00 (2006.01) G07F 7/08 (2006.01) G07F 7/10 (2006.01)

Patent

CA 2221282

In a card type recording medium containing a data area where data containing ID information of a holder are recorded, and an image area where image data are recorded, in the image area are recorded second image data which are generated by transforming first image data specifying the holder to frequency-area data, adding the transformed frequency-area data with the ID information and inversely transforming the added data to image signals.

L'invention porte sur une carte d'enregistrement comportant une section de données où des renseignements sur l'identité du titulaire de la carte sont enregistrés et une section d'image où des données d'image sont enregistrées. Des données d'une seconde image sont enregistrées dans la section d'image et sont produites en transformant les données de la première image portant sur le titulaire en des données de section de fréquence qui sont ensuite ajoutées aux renseignements sur l'identité. Il s'agit ensuite de transformer à l'inverse les données ajoutées en signaux d'image.

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