摘要:
A system (10) is provided for performing first-order authentication of articles marked with indicia (30) discernible in visible, ultraviolet, or infrared light or tagged with UV- or IR-sensitive chemicals. The first-order authentication system provides reliable visual authentication by providing for juxtaposition of the article-under-test (20) with a known reference-standard sample-specimen (90, 100, or 300), while the article-under-test (20) is illuminated by a suitable source (65 or 250) of radiation in the visible, ultraviolet, or infrared portions of the electromagnetic spectrum. Thus, the system (10) facilitates comparison to differentiate a genuine article from a counterfeit article with first-order accuracy but at a substantially lower cost than that of automated authentication systems. Additionally, the system can be used in both portable and desk top embodiments. The system preferably has optional interchangeable holders (140 or 400) for various articles-under-test as well as an optional interchangeable holder (115) for various reference-standard sample-specimens. Some embodiments utilize structures incorporating split-image optics (200), superposed-image optics, and/or a blink-comparator.
摘要:
The purse has a banknote compartment (13) and a coin compartment (8) and a UV lighting unit (4) activatable when the purse is opened to generate UV radiation making fluorescent and/or phosphorescent pigments in banknotes visible. This makes it easy to detect forged banknotes. The UV lighting unit is preferably a lamp with a flat housing (30) containing a rare gas, especially mercury vapour. The gas is ignited via spiral-wound filaments (50) in two housing plugs (31, 32) arranged on opposite edges of the housing.
摘要:
A device for reading and validating documents in general which are provided with magnetic bar codes and the like, comprising a casing (2) which can be moved manually over a document to be validated and supports, in a lower part thereof, a magnetic reading head (10) flanked by a permanent magnet (12). The magnetic reading head (10) is operatively connected to a data processing unit (15) which is connected to a display accommodated in the casing (2).
摘要:
A currency evaluation device receives a stack of currency bills and evaluates said bills. It comprises an input receptacle for receiving the stack, an output receptacle, a transport mechanism for transporting said bills, one at a time, and a discriminating unit for evaluating the bills, comprising two detectors positioned along a transport path and disposed on opposite sides thereof, so as to be disposed adjacent to first and second opposing surfaces of the bills and counting and determining the denomination of the bills. It further comprises means for flagging a bill when its denomination is not determined.
摘要:
A viewing device (19) for use by an observer (63) to ascertain the authenticity of an instrument of value (16) having an image (17) formed from an optically variable device (18). The viewing device (19) includes a frame structure (23) which permits viewing of the image (17) in a fixed spatial orientation and a reflector (61) carried by the frame structure (23) for permitting the observer (63) to see simultaneously the image (17) in first and second colors without movement of the observer (63), the viewing device (19) or the image (17).
摘要:
A currency identification system comprises at least two scanheads positioned so as to permit scanning of a bill along at least two segments on a first side of said bill, said first-side scanheads being capable of detecting characteristic information from said bill along said segments and generating corresponding output signals representing variations in the detected characteristic information from which scanned patterns of characteristic information may be generated, at least two of said scanheads being laterally displaced relative to one another, means for generating at least one scan pattern from said output signals, said at least one scanned pattern representing analog variations in said characteristic information along a segment of said bill, a memory for storing at least one master pattern associated which each genuine bill which the system is capable of identifying, said at least one master pattern representing analog variations in characteristic information along a segment of an associated genuine bill, and a signal process means for performing a pattern comparison.
摘要:
A document evaluation device comprises an input receptacle for receiving a stack of documents to be evaluated and a single output receptacle for receiving said documents after said documents have been evaluated. A transport mechanism transports said documents one at a time from said input receptacle to said output receptacle along a transport path. A discriminating unit includes a detector positioned along said transport path between input receptacle and said output receptacle. Said discriminating unit counts and determines the identity of said documents. The flagging means flags whether a documents meets or fails to meet a certain criteria.
摘要:
Detecting counterfeit bank notes is achieved by directing ultraviolet light at a sample from a source (2) and measuring the level of ultraviolet light reflected from the sample using a first photocell (104) and the amount of fluorescent light generated by the sample using a second photocell (106). The detected levels are compared with reference levels and only if both reflective and fluorescent criteria are satisfied is the note declared genuine. The sample, during test, is supported on a glass plate (102). The apparatus uses the value of the intensity of light reflected from the glass plate (in the absence of a sample) as a basis for producing at least one reference level against which a subsequent comparison can be made.
摘要:
Process and apparatus for checking the authenticity of valuable documents by subjecting the document to be checked in a closed room to at least incident light, transmitting and floodlight, especially floodlight at angles of 0 tot 15°. Apparatus is described with document examination places without relative interference of the different radiation.