NO920625L - OPTICAL AUTHENTICITY TESTING OF BANKNOTES AND SIMILAR - Google Patents
OPTICAL AUTHENTICITY TESTING OF BANKNOTES AND SIMILARInfo
- Publication number
- NO920625L NO920625L NO92920625A NO920625A NO920625L NO 920625 L NO920625 L NO 920625L NO 92920625 A NO92920625 A NO 92920625A NO 920625 A NO920625 A NO 920625A NO 920625 L NO920625 L NO 920625L
- Authority
- NO
- Norway
- Prior art keywords
- banknotes
- detection
- similar
- real
- blue
- Prior art date
Links
Landscapes
- Inspection Of Paper Currency And Valuable Securities (AREA)
Abstract
En fremgangsmåte og en anordning for ekthets- kontrollering av pengesedler er basert på deteksjon av de karakteristiske forskjeller i trykkprosessen for ekte sedler og falske sedler produsert med fargekopimaskin. Deteksjon utføres i smale bolgelengdebånd henholdsvis i typisk rødt og blått fargeområde, og samtidig i særskilte retninger, med reflektert og spredt lys. Deteksjon av intensitet i et tilsvarende smalt bånd nær øyets maskimalfølsomhetsområde, dvs. i det grønne område, og i en annen retning, utføres også for referanseformål. Måling foretas fortrinnsvis i et spesielt utvalgt punkt hvor blå- og rød-innholdet i den ekte seddelens trykk er ekstremt, dvs. høyt eller lavt.A method and apparatus for checking the authenticity of banknotes are based on detecting the characteristic differences in the printing process for real banknotes and fake banknotes produced with a color copier. Detection is performed in narrow wavelength bands in the typical red and blue color ranges, respectively, and in separate directions, with reflected and scattered light. Detection of intensity in a correspondingly narrow band near the eye's maximum sensitivity range, i.e. in the green area, and in another direction, is also performed for reference purposes. Measurement is preferably carried out at a specially selected point where the blue and red content of the real banknote print is extreme, ie high or low.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO92920625A NO920625L (en) | 1989-08-18 | 1992-02-17 | OPTICAL AUTHENTICITY TESTING OF BANKNOTES AND SIMILAR |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO893323A NO893323D0 (en) | 1989-08-18 | 1989-08-18 | OPTICAL AUTHENTICITY TESTING OF BANKNOTES AND LIKE. |
PCT/NO1990/000132 WO1991003031A1 (en) | 1989-08-18 | 1990-08-17 | Optical testing for genuineness of bank notes and similar paper bills |
NO92920625A NO920625L (en) | 1989-08-18 | 1992-02-17 | OPTICAL AUTHENTICITY TESTING OF BANKNOTES AND SIMILAR |
Publications (2)
Publication Number | Publication Date |
---|---|
NO920625D0 NO920625D0 (en) | 1992-02-17 |
NO920625L true NO920625L (en) | 1992-02-17 |
Family
ID=27353109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO92920625A NO920625L (en) | 1989-08-18 | 1992-02-17 | OPTICAL AUTHENTICITY TESTING OF BANKNOTES AND SIMILAR |
Country Status (1)
Country | Link |
---|---|
NO (1) | NO920625L (en) |
-
1992
- 1992-02-17 NO NO92920625A patent/NO920625L/en unknown
Also Published As
Publication number | Publication date |
---|---|
NO920625D0 (en) | 1992-02-17 |
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