NO920625L - OPTICAL AUTHENTICITY TESTING OF BANKNOTES AND SIMILAR - Google Patents

OPTICAL AUTHENTICITY TESTING OF BANKNOTES AND SIMILAR

Info

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
Application number
NO92920625A
Other languages
Norwegian (no)
Other versions
NO920625D0 (en
Inventor
Einar Gotaas
Original Assignee
Datalab Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NO893323A external-priority patent/NO893323D0/en
Application filed by Datalab Oy filed Critical Datalab Oy
Priority to NO92920625A priority Critical patent/NO920625L/en
Publication of NO920625D0 publication Critical patent/NO920625D0/en
Publication of NO920625L publication Critical patent/NO920625L/en

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  • 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.

NO92920625A 1989-08-18 1992-02-17 OPTICAL AUTHENTICITY TESTING OF BANKNOTES AND SIMILAR NO920625L (en)

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)

Also Published As

Publication number Publication date
NO920625D0 (en) 1992-02-17

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