Title:
METHOD OF AND APPARATUS FOR DETECTING GENUINENESS OF DATA HOLDER
Document Type and Number:
Japanese Patent JPS5797188
Kind Code:
A
Abstract:
The present invention specifies a method for the verification of authenticity in a data carrier (1) by measuring permeability to an electromagnetic radiation in at least one region of the data carrier (1). Permeability is scanned over a regional area of the data carrier by means of a radiation detector (7). The output signal of the detector (7) is coded and co-inscribed as additional information in a store of the data carrier with the information data during the initial inscribing of these data. In the reading and authenticity check scanning operation this information is compared with a corresponding additional information stored during the original data inscription.
Inventors:
HERUMAN SUTOTSUKUBURUGAA
JIIKUFURIIDO BAUAA
JIIKUFURIIDO BAUAA
Application Number:
JP15954381A
Publication Date:
June 16, 1982
Filing Date:
October 08, 1981
Export Citation:
Assignee:
KOPITETSUKUSU GMBH ZUITSUHIAAH
International Classes:
B42D15/10; G06K5/00; G06K7/00; G06K7/08; G06K7/10; G06K17/00; G06K19/10; G11B20/18; G06K19/14; G07F7/08; G11B23/34; (IPC1-7): B42D15/02; G06K7/08; G06K7/10; G06K17/00; G06K19/08; G11B5/09; G11B23/30
Foreign References:
| DE2451732A1 | 1976-05-06 | |||
| DE2627417A1 | 1976-12-23 | |||
| DE2623708A1 | 1976-12-02 | |||
| DE2826469A1 | 1979-12-20 | |||
| DE3011317A1 | 1981-10-15 |