KR20010076926A - Discrimination method for money and discriminator thereof - Google Patents
Discrimination method for money and discriminator thereof Download PDFInfo
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- KR20010076926A KR20010076926A KR1020000004362A KR20000004362A KR20010076926A KR 20010076926 A KR20010076926 A KR 20010076926A KR 1020000004362 A KR1020000004362 A KR 1020000004362A KR 20000004362 A KR20000004362 A KR 20000004362A KR 20010076926 A KR20010076926 A KR 20010076926A
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- 238000012850 discrimination method Methods 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000001678 irradiating effect Effects 0.000 claims abstract description 7
- 230000001360 synchronised effect Effects 0.000 claims abstract 2
- 238000003384 imaging method Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000002496 gastric effect Effects 0.000 description 2
- 230000002685 pulmonary effect Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
Classifications
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S902/00—Electronic funds transfer
- Y10S902/01—Electronic funds transfer with electronic means providing security
- Y10S902/07—Means to identify counterfeit money
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- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
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- Toxicology (AREA)
- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
Abstract
목적 : 저렴한 비용으로 위폐 감별을 가능케 하고자 화폐에 적외선을 조사하고 반사되는 적외선을 검출하여 위폐를 감별할 수 있는 적외선을 이용한 위폐 감별 방법과 이를 이용한 위폐 감별 장치를 제공한다.PURPOSE: To provide counterfeit discrimination at low cost, the present invention provides a counterfeit discrimination method using infrared rays that can discriminate counterfeits by irradiating infrared rays on money and detecting reflected infrared rays.
구성 : 본 발명은 화폐에 적외선을 조사하고 화폐의 표면에서 반사되는 광 중에서 적외선만 필터링하여 센싱되는 영상 신호를 동기 처리하고 모니터로 영상 출력함으로써 위폐여부를 감별할 수 있는 화상을 제공하는 것으로서, 화폐 또는 유가증권에 적외선을 조사하는 적외선 광원과, 화폐 또는 유가증권에서 반사되는 광 중에서 적외선 성분만 통과시키는 적외선 통과 필터와, 이 적외선 통과 필터를 통과한 적외선이 결상되는 촬상소자와, 이 촬상소자에 결상된 영상신호를 스캐닝하여 수직 및 수평 영상신호로 출력하는 구동부와, 이 구동부의 출력신호를 수직 및 수평 동기화시킨 영상 신호로 변환시켜 출력하는 영상신호 처리부와, 이 영상신호 처리부의 출력신호에 기초한 영상을 현출하는 모니터로 구성된다.Composition: The present invention provides an image that can discriminate whether or not counterfeit by irradiating infrared rays to money and filtering only infrared rays among the light reflected from the surface of the money to process image signals sensed and output them to the monitor. Or an infrared light source for irradiating infrared rays to the securities, an infrared passing filter for passing only infrared components among light reflected from money or securities, an image pickup device for forming infrared rays passing through the infrared passing filter, and the image pickup device. A driver which scans an image signal and outputs it as a vertical and horizontal image signal, an image signal processor which converts the output signal into a vertical and horizontal synchronized image signal, and outputs the image signal. It consists of a monitor that displays an image.
Description
본 발명은 적외선을 이용한 위폐 감별 방법과 이를 이용한 위폐 감별 장치에관한 것이다.The present invention relates to a gastric pulmonary discrimination method using infrared rays and a gastric pulmonary discrimination device using the same.
경제 활동의 근간으로 되는 상품 교환의 매개체로 사회에 유통되고 있는 화폐 또는 수표, 어음과 같은 유가 증권 등은 각각이 지니고 있는 경제적 가치 때문에 쉽게 위조될 수 있는 문제를 가지고 있다. 특히 최근에 복사 기술의 발전에 힘 입어 정교한 칼라 복사기로 복제된 위폐는 사용 현장에서 육안으로 그 진위 여부를 판가름하기가 어려운 단계까지 육박하고 있는 실정이다.As a medium of commodity exchange, which is the basis of economic activity, currency, checks, and securities such as checks, which are distributed in society, have problems that can be easily forged because of the economic value of each. In particular, the counterfeit, which has been recently reproduced by sophisticated color copiers due to the development of copying technology, is approaching a stage where it is difficult to determine its authenticity with the naked eye.
조폐공사는 점증할 우려가 많은 화폐, 유가증권의 위조를 방지하기 위하여 인쇄 과정에서 다양한 위폐 감식수단을 심어 놓고 있다.The KOMSCO has planted various counterfeit countermeasures in the printing process to prevent counterfeiting of currency and securities that are likely to increase.
화폐에 배려된 위폐 감식수단의 예로는 미리 정해 놓은 여러 곳에 칼라 복사되지 않게 인쇄되는 암호, 또는 자외선에 발광하는 안료의 사용 등을 들 수 있으나, 암호 인쇄는 위폐 감식에 관한 지식을 배워야 하는 것이므로 비전문가에게는 소용이 없고, 자외선을 조사하여 식별하는 방법은 최근에 무색 잉크를 화폐에 도포하였을 때에 자외선이 발광된다는 사실이 알려지면서 위폐 감식수단으로의 효용 가치가 떨어진 바 있다.Examples of counterfeit countermeasures that are considered in money include passwords printed without color copying at predetermined locations, or the use of pigments that emit light in ultraviolet light. However, password printing requires learning of knowledge about counterfeiting. The method of irradiating and identifying ultraviolet rays has been of little use as a counterfeit countermeasure as it is known that ultraviolet rays are emitted when colorless ink is applied to money.
또 다른 감식수단으로는 전기 전도성, 자성, 형광성 등의 특성을 화폐에 부여하기 위하여 은선이라 칭하는 플라스틱 필름을 지면에 삽입하거나 용지의 일부에 은화라고 불리는 워터마크를 형성하는 방식으로 지폐의 위조여부를 감별할 수 있는 수단을 부여하고 있으며, 이에 병행하여 요판인쇄를 통해 형광 또는 자성 인쇄, 적외선 반사 재료의 인쇄, 미세문자의 인쇄, 고도의 디자인 기법 적용, 각도 변환에 따라 나타나게 하는 잠상 인쇄 등이 활용되고 있다.Another means of identification is to falsify banknotes by inserting a plastic film called a silver line into the ground or forming a watermark called silver on a portion of the paper in order to impart electrical conductivity, magnetism, fluorescence, etc. to the currency. In addition, it provides a means to discriminate, and in parallel, it utilizes fluorescence or magnetic printing through intaglio printing, printing of infrared reflective material, printing of fine characters, application of advanced design techniques, and latent image printing that appear due to angle conversion. It is becoming.
이와 같은 위조 방지 수단 중에서 육안 감별될 수 없는 잠상 인쇄방식이 효과적이나, 이 방식은 식별용 장비를 갖추어야 하는 경제적인 문제를 안고 있다.Among such anti-counterfeiting means, the latent image printing method, which cannot be visually discriminated, is effective, but this method has an economic problem of having identification equipment.
그러나 위폐의 완벽한 식별을 도모하려면 필수 장비를 준비하는 것이 타당하며, 여기서 해결해야 하는 점은 저렴한 방식의 장비를 제공하는 것이다.However, it is reasonable to have the necessary equipment in order to fully identify counterfeits, and the challenge here is to provide low cost equipment.
따라서 본 발명의 목적은 저렴한 비용으로 위폐 감별을 가능케 하고자 화폐에 적외선을 조사하고 반사되는 적외선을 검출하여 위폐를 감별할 수 있는 적외선을 이용한 위폐 감별 방법과 이를 이용한 위폐 감별 장치를 제공함에 두고 있다.Accordingly, an object of the present invention is to provide a counterfeit discrimination method using infrared rays and a counterfeit discrimination apparatus using the same, which can discriminate the counterfeit by irradiating infrared rays on money and detecting reflected infrared rays to enable the counterfeit discrimination at low cost.
상기의 목적에 따라 본 발명의 방법은 화폐에 적외선을 조사하고 화폐의 표면에서 반사되는 광 중에서 적외선만 필터링하여 센싱되는 영상 신호를 동기 처리하고 모니터로 영상 출력함으로써 위폐여부를 감별할 수 있는 화상을 제공하게 구성된다.According to the above object, the method of the present invention irradiates infrared rays to money and filters only the infrared rays from the light reflected from the surface of the money to synchronize the sensed image signal and outputs the image to the monitor to discriminate whether the image can be discriminated. It is configured to provide.
또, 상기의 방법을 구현하는 감별장치는 화폐로 적외선을 조사하는 적외선 광원과, 화폐에서 반사되는 광 중에서 적외선 성분만 통과시키는 적외선 통과 필터와, 이 적외선 통과 필터를 통과한 적외선이 결상되는 촬상소자와, 이 촬상소자에 결상된 영상신호를 스캐닝하여 수직 및 수평 영상신호로 출력하는 구동부와, 이 구동부의 출력신호를 수직 및 수평 동기화시킨 영상 신호로 변환시켜 출력하는 영상신호 처리부와, 이 영상신호 처리부의 출력신호에 기초한 영상을 현출하는 모니터로 구성된다.In addition, the discriminating device implementing the above method includes an infrared light source for irradiating infrared rays with money, an infrared passing filter for passing only infrared components among the light reflected from the currency, and an imaging device in which infrared rays passing through the infrared passing filter are imaged. A driving unit which scans an image signal formed on the image pickup device and outputs it as a vertical and horizontal image signal, a video signal processing unit which converts the output signal of the driving unit into a vertical and horizontal synchronization image signal, and outputs it; And a monitor for displaying an image based on the output signal of the processing unit.
상술한 구성의 본 발명은 빈번하게 현금이나 유가증권을 취급하는 업소에서상기 현금이나 유가증권을 인출하는 장소에 비치하여 거래되는 현금, 유가증권의 진위를 즉석에서 효율적으로 감별 처리할 수 있는 효과를 가지고 있다.The present invention of the above-described configuration has the effect of efficiently discriminating the authenticity of cash and securities traded on the spot where the cash or securities are withdrawn at a place that frequently handles cash or securities. Have.
도 1은 본 발명의 방법을 설명하기 위한 개략적 구성도.1 is a schematic diagram for explaining the method of the present invention.
도 2는 도 1에 적용된 제어회로의 구성을 도시하는 블록도.2 is a block diagram showing the configuration of a control circuit applied to FIG.
도 3은 본 발명 장치의 일 예를 도시하는 사시도.3 is a perspective view showing an example of the apparatus of the present invention;
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
2 : 화폐 4 : 적외선 통과 필터2: currency 4: infrared filter
6 : 적외선 광원 8 : 광학계6: infrared light source 8: optical system
10 : 촬상소자 12 : 제어회로부10: imaging device 12: control circuit
14 : 정류부 16 : 구동부14 rectifier 16 drive unit
18 : 영상신호 처리부 20 : 모니터18: video signal processor 20: monitor
22 : 기대 24 : 컬럼22: expectation 24: column
26 : 회로 수납부 28 : 케이블26: circuit housing 28: cable
상술한 본 발명의 바람직한 실시 예를 첨부 도면에 따라 상세히 설명하면 다음과 같다.Preferred embodiments of the present invention described above will be described in detail with reference to the accompanying drawings.
도 1은 본 발명의 방법을 설명하는 개략도로서, 화폐(2)는 중심부가 적외선 통과 필터(4)로 되어 있고 그 주변부에 적외선 발광원(6)이 배치되어 상기 적외선 발광원(6)으로부터 조사되는 적외선은 화폐(2)의 표면에서 반사되고, 이 때 반사되는 광 중에서 적외선 성분의 광만 중앙의 적외선 통과 필터(4)를 경유하여 입사된다. 이렇게 입사되는 적외선은 광학계(8)를 거쳐 촬상소자(10)로 결상됨에 따라 상기 촬상소자(10)는 이에 해당되는 전기 신호를 제어회로(12)에 입력시켜 주게 된다.Fig. 1 is a schematic view illustrating the method of the present invention, in which the money 2 is composed of an infrared light passing filter 4 at the center thereof and an infrared light emitting source 6 is disposed at its periphery and irradiated from the infrared light emitting source 6. The infrared rays to be reflected are reflected on the surface of the money 2, and only the light of the infrared component is incident through the central infrared pass filter 4 among the reflected light. As the incident infrared rays are formed into the image pickup device 10 through the optical system 8, the image pickup device 10 inputs a corresponding electric signal to the control circuit 12.
제어회로(12)는 도 2로 도시한 바와 같이 교류를 정격 직류로 변환시키는 정류부(14)와, 상기 촬상소자(10)의 수평 및 수직 출력신호를 스캐닝하고 출력하는 구동부(16)와, 이 구동부(16)의 출력신호를 동기신호로 출력하는 영상신호 처리부(18)로 구성된다. 그리고 상기 영상신호 처리부(18)의 출력신호는 모니터(20)로 인가되어서 적외선을 반사하여 나타나는 화폐를 영상으로 현출하여 주게 되어 있다.As shown in FIG. 2, the control circuit 12 includes a rectifying unit 14 for converting alternating current into a rated direct current, a driving unit 16 for scanning and outputting horizontal and vertical output signals of the imaging device 10; The video signal processor 18 outputs the output signal of the driver 16 as a synchronization signal. The output signal of the image signal processing unit 18 is applied to the monitor 20 so as to display money represented by reflecting infrared rays as an image.
상술한 구성의 본 발명은 도 3의 도시와 같은 외관을 가지는 장치로 구현될 수 있다.The present invention having the above-described configuration may be implemented as a device having an appearance as shown in FIG. 3.
도 3에서 화폐(2)가 놓여지는 기대(22)의 상방에는 필터(4)와 적외선 광원(6)이 위치하고, 이들은 광학계(8)가 내장된 컬럼(24)에 의해 회로 수납부(26)에 현수되는 구조로 되어 있다. 또 기대(22)의 일측에는 상기 회로 수납부(26)로부터 케이블(28)이 인출되어서 상기 모니터(20)로 접속 연결된 구성으로 되어 있다.In FIG. 3, the filter 4 and the infrared light source 6 are positioned above the base 22 on which the money 2 is placed, and these are arranged in the circuit accommodating part 26 by the column 24 in which the optical system 8 is embedded. The structure is suspended on. Moreover, the cable 28 is pulled out from the said circuit accommodating part 26 to one side of the base 22, and it is set as the structure connected and connected to the said monitor 20. As shown in FIG.
상술한바와 같은 구성으로 된 본 발명은 슈퍼 마켓, 금융기관, 일반 소매점 등에 비치하여 놓고 사용되는 것이며, 거래 과정에서 인출되는 화폐나 유가증권 을 전수 검사하거나 또는 의심스러운 것만 표본 검사하여 그 진위를 즉석에서 판별할 수 있게 된다.The present invention having the above-described configuration is used in a super market, a financial institution, a general retail store, and the like, and immediately checks the authenticity of the currency or securities withdrawn from the transaction process or a sample inspection of only suspicious ones. This can be determined from.
즉, 적외선 광원(6)이 점등되어 있는 상태에서 화폐(2)를 기대(22) 상에 재치하여 놓으면 화폐(2)의 표면에서 반사되는 적외선은 적외선 통과 필터(4)를 통해 입사된다. 만약 재치된 화폐(2)가 위조된 것이라면 적외선 여기 재료를 함유하고 있지 않은 것이므로 반사되는 적외선이 거의 없게 되어 모니터(20)에 화폐의 영상이 현출되지 않는다. 그러나 화폐(2)가 진본이면 반사되는 적외선은 적외선 통과 필터(4)를 투과하여 광학계(8)를 거쳐 촬상소자(10)에 결상되고, 그 결과로 상기 촬상소자(10)는 수직 및 수평 신호를 발생하게 된다.That is, when the money 2 is placed on the base 22 in the state where the infrared light source 6 is turned on, the infrared rays reflected from the surface of the money 2 are incident through the infrared passing filter 4. If the placed money 2 is forged, it does not contain infrared excitation material, and thus there is little reflected infrared light, so that an image of the money is not displayed on the monitor 20. However, if the currency 2 is authentic, the reflected infrared rays pass through the infrared pass filter 4 to form an image on the image pickup device 10 via the optical system 8, and as a result, the image pickup device 10 receives vertical and horizontal signals. Will occur.
이와 같이 하여 촬상소자(10)에서 발생되는 신호는 구동부(16)에서 스캐닝되어 수직 신호와 수평신호로 출력되고, 이 출력신호는 영상신호 처리부(18)로 입력되어 동기 신호로 변환된 다음에 모니터(20)로 송출됨에 따라 상기 모니터(20)에는 적외선에 의한 화폐의 영상이 현출된다.In this way, the signal generated by the image pickup device 10 is scanned by the driver 16 and output as a vertical signal and a horizontal signal. The output signal is input to the image signal processor 18 and converted into a synchronization signal, and then monitored. As it is sent to the (20), the monitor 20, the image of the money by the infrared is displayed.
그러므로 사용자는 모니터(20)를 주시하는 것만으로화폐 또는 유가증권의 진위를 즉석에서 판별할 수 있게 되는 것이다.Therefore, the user can immediately determine the authenticity of money or securities simply by looking at the monitor 20.
이상 설명한 바와 같이 본 발명은 화폐나 유가증권에 함유되어있는 적외선 여기 재료를 검출하여 그 화폐나 유가증권의 진위를 판멸하게 구성되어 있고, 그 구성에 있어서는 적외선 광원과 적외선 통과 필터, 그리고 검출된 전기 신호를 영상신호로 동기 시킬 수 있는 간단한 구성으로 된 것이기 때문에 설비의 제조비가 저렴하게 되어 큰 경제적 부담 없이 갖출 수 있는 효과를 가지고 있다.As described above, the present invention is configured to detect the infrared excitation material contained in money or securities to ruin the authenticity of the money or securities. In this configuration, an infrared light source, an infrared light passing filter, and the detected electricity Since it is a simple configuration that can synchronize the signal to a video signal, the manufacturing cost of the facility is low, and has the effect that can be equipped without a large economic burden.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000004362A KR20010076926A (en) | 2000-01-28 | 2000-01-28 | Discrimination method for money and discriminator thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000004362A KR20010076926A (en) | 2000-01-28 | 2000-01-28 | Discrimination method for money and discriminator thereof |
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| KR20010076926A true KR20010076926A (en) | 2001-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020000004362A Ceased KR20010076926A (en) | 2000-01-28 | 2000-01-28 | Discrimination method for money and discriminator thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010090050A (en) * | 2001-08-29 | 2001-10-18 | 주식회사 캐쉬텍 | Counterfeit money discrimination device using small UV light lamp and blue color sensor. |
| KR20030008661A (en) * | 2001-07-19 | 2003-01-29 | 주식회사 청호컴넷 | Forged check discriminator |
| KR100695689B1 (en) * | 2005-11-16 | 2007-03-19 | 이희영 | Infrared viewer |
| KR100717679B1 (en) * | 2005-11-23 | 2007-05-11 | 이희영 | Portable infrared viewer |
| KR100775033B1 (en) * | 2007-03-15 | 2007-11-08 | 주식회사 엠비젼 | Portable Security Printout Authenticator |
| KR100838794B1 (en) * | 2006-12-01 | 2008-06-17 | 주식회사 엠비젼 | Counterfeit checker |
| KR100882395B1 (en) * | 2008-10-01 | 2009-02-05 | 한국조폐공사 | Authenticity identifier |
| KR100890500B1 (en) * | 2007-07-23 | 2009-03-26 | 한국조폐공사 | Authenticity identifier |
| KR100945268B1 (en) * | 2007-12-27 | 2010-03-03 | 한국 고덴시 주식회사 | Counterfeit Bill Discrimination Unit |
-
2000
- 2000-01-28 KR KR1020000004362A patent/KR20010076926A/en not_active Ceased
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030008661A (en) * | 2001-07-19 | 2003-01-29 | 주식회사 청호컴넷 | Forged check discriminator |
| KR20010090050A (en) * | 2001-08-29 | 2001-10-18 | 주식회사 캐쉬텍 | Counterfeit money discrimination device using small UV light lamp and blue color sensor. |
| KR100695689B1 (en) * | 2005-11-16 | 2007-03-19 | 이희영 | Infrared viewer |
| KR100717679B1 (en) * | 2005-11-23 | 2007-05-11 | 이희영 | Portable infrared viewer |
| KR100838794B1 (en) * | 2006-12-01 | 2008-06-17 | 주식회사 엠비젼 | Counterfeit checker |
| KR100775033B1 (en) * | 2007-03-15 | 2007-11-08 | 주식회사 엠비젼 | Portable Security Printout Authenticator |
| WO2008126989A1 (en) * | 2007-03-15 | 2008-10-23 | M-Vision Co., Ltd. | Portable inspecting device for security printed matter |
| KR100890500B1 (en) * | 2007-07-23 | 2009-03-26 | 한국조폐공사 | Authenticity identifier |
| KR100945268B1 (en) * | 2007-12-27 | 2010-03-03 | 한국 고덴시 주식회사 | Counterfeit Bill Discrimination Unit |
| KR100882395B1 (en) * | 2008-10-01 | 2009-02-05 | 한국조폐공사 | Authenticity identifier |
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