JPH02150983A - Paper money discriminating device - Google Patents

Abstract

PURPOSE:To highly accurately discriminate a paper money in a relatively simple method by obtaining the number of dot parts and an array direction constituting Braille with the use of a Braille detecting device based on a translucent quantity concerning the dot parts. CONSTITUTION:A translucent quantity detecting part 1 inputs the respective outputs of linear image sensors P1 and P2 and an optical sensor Q, and detects the translucent quantitys at the respective parts of respective corner parts together with their coordinates. A dot part calculating part 2 selects a part having the translucent quantity in a prescribed range, namely, detects the dot parts, and calculates the number of the parts. Based on the number of the dot parts and the respective coordinates, the authenticity of the paper money and the type are decided by a deciding part 3. That is, whether a number N is one or not is judged, and when it is YES, a paper money Bi=1, and it is decided to be one thousand yen. When it is NO, whether the number N is two or not is judged, and when a result is NO, the paper money is decided to be a false paper money. When it is YES, Ym=Xn is judged for the respective X coordinates of the two dot parts, and when it is YES, it is decided to be ten thousand yen, and when it is NO, it is decided to be the false paper money.

Description

[Detailed description of the invention] [Industrial application field]

The present invention particularly relates to a banknote validating device that distinguishes the authenticity or denomination of a banknote based on Braille characters formed at a predetermined corner of the banknote and unique to each denomination.

[Conventional technology]

Conventional banknote identification devices detect magnetic patterns on banknotes,
The banknotes are identified based on the optical pattern of transmission and reflection related to the picture, or the dimensions, either alone or in combination.

[Problem to be solved by the invention]

However, as counterfeiting and alteration of banknotes become more sophisticated, detailed processing is required to improve identification accuracy.
(Automated teller machines) and the like require continuous and instantaneous identification of banknotes, so there has been a limit to the ability of conventional techniques to improve identification accuracy due to processing speed. Therefore, it is desired to accurately grasp the characteristics of banknotes using new technical clues that are not based on the conventional techniques as described above, and to discriminate banknotes with high accuracy based on this. In other words, this is an appropriate measure against counterfeiting or alteration of banknotes. To this end, we have focused on the Braille characters unique to each denomination, which are formed at predetermined corners of banknotes, and have considered identifying these Braille characters. ``An object of the present invention is to provide a banknote validating device that solves the problems of the conventional technology and can perform banknote validating with high accuracy.In other words, it is difficult to forge or alter banknotes.

[Means to solve the problem]

In order to solve this problem, a first banknote discrimination device according to the present invention is a device that discriminates the authenticity or denomination of a banknote based on Braille characters formed at a predetermined corner of the banknote and unique to each denomination. The apparatus further includes a Braille detection means for determining the number and column direction of the dots constituting the Braille based on the amount of light transmitted by the dots. The braille detection means includes a dot detection means that calculates the number and each position of points having a light transmission amount value in a predetermined range in any corner of the banknote; and determining means for determining the type of Braille. The second banknote validating device includes: a counting unit that counts the number of dots formed at a predetermined corner of a banknote and forming Braille characters unique to each denomination based on the amount of light transmitted through the dots; a determination means for determining the authenticity of a banknote based on features other than Braille; a combination of one or two count outputs of the dots by the counting means and a determination of authenticity by the determination means; The bill is discriminated as genuine based on the above, and the bill is discriminated as fake based on combinations other than the above.

[For use]

In the first device of the invention, the number and column direction of the dots constituting the Braille are determined by the Braille detection means based on the amount of light transmitted through the dots, and , the authenticity or denomination of banknotes is determined. In the second device of the invention, the number of dots formed at a predetermined corner of a banknote and forming Braille characters unique to each denomination is counted by the counting means based on the amount of light transmitted through the dots, and the number is determined. The means determines the authenticity of the banknote based on its features other than Braille. The banknote is determined to be genuine based on the combination of the count output of one or two dots by the counting means and the determination of authenticity by the determination means, and the banknote is determined to be fake based on other combinations. be identified.

【Example】

An embodiment of the banknote validating device according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of this embodiment. In the figure, Bi (i=1.2.3) are banknotes, which are a thousand yen banknote, an egg yen banknote, and a ten thousand yen banknote, respectively. Pi and P2 are linear image sensors that measure the amount of light transmitted at each location of each rectangular corner of each long side of the banknote Bi that is conveyed in the direction of the arrow perpendicular to the long side. Q is an optical sensor that detects each passage of the leading edge and trailing edge of the banknote Bi, and defines the length measured in the conveying direction of the square corner where the amount of light transmission is to be measured. The upper right corner of the diagram of banknote Bi is the origin, and the short and long sides are the X and Y axes, respectively. Reference numeral 1 denotes a transmitted light amount detecting section, 2 a point section counting section, and 3 a determining section, which constitute the point section detecting means of the invention. The amount of transmitted light detection section 1 receives the outputs of the linear image sensors Pi, P2, and the optical sensor Q, and detects the amount of transmitted light at each location of each corner along with its coordinates. The area where the amount of light transmitted at each corner is measured (hatched with a - dotted chain line) has a dimension in the long side direction that is determined by each linear image sensor PI, P2.
The dimensions in the short side direction are each specified by the optical sensor Q. That is, when the passage of the leading edge of a banknote is detected by the optical sensor Q, the dimension in the short side direction from the leading edge of the banknote is specified in the range of time T1 to T2 when this time point is set as time zero, and the optical sensor When the passage of the trailing edge of the bill is detected at Q, the dimension in the short side direction from the trailing edge of the bill is specified in the range of time T3 to T4 when this time point is set as time zero. Note that Braille is composed of one or two dots, and is formed at a predetermined corner of each banknote. The dots are thinner than other parts of the banknote and have a large amount of transmitted light, so they can be detected. A 1,000 yen bill has one dot, a Tenshi yen bill has two dots, and their arrangement direction is perpendicular to the long side of the bill, while a ten thousand yen bill has two dots, and the arrangement direction is perpendicular to the long side of the bill. become parallel. In FIG. 1, banknote B2 (
Each corner of the banknote B3 (-10,000 yen) with Braille is partially shown. The point counting section 2 selects a point having a value within a predetermined range from the amount of transmitted light, that is, detects a point and counts its number. The determination unit 3 determines the authenticity or denomination of the banknote based on the number of dots and their respective coordinates. The operation of this embodiment will be explained with reference to the flowchart in FIG. In FIG. 2, step S
At t, the value Hj of the amount of light transmitted at each location of each corner and its coordinates Xj, Yj are determined. This is the linear image sensor Pi, P in FIG.
2. Based on the optical sensor Q and the amount of transmitted light detection section l. In step S2, Hj included in the range of light transmission amount Ha-Hb is selected, and the number N thereof is counted. This is determined by the point counting section 2. In the steps after S3, the authenticity or denomination is determined, and this is based on the function of the determining section 3. That is,
In step S3, it is determined whether the number N is 1, and if YES, it is determined to be 1,000 yen in step s7. If NO, it is determined in step S4 whether the number N is 2, and if YES, the process moves to step S5, and if NO, it is determined to be false in step SIO. In step S5, for each Y coordinate of the two point parts, Ym
It is determined whether =Yn, and if YES, step S8
Therefore, it is determined to be an egg yen. If no, in step S6, 2
It is determined whether Xm=Xn for each of the X coordinates of the point portions, and if YES, it is determined to be -10,000 yen in step S9, and if NO, it is determined to be false in step SIO, and the process ends. Next, the configuration and operation of another embodiment will be described with reference to the block diagram of the main parts in FIG. 3 and the flowchart in FIG. 4. This other embodiment differs from the previous embodiment in that only the authenticity of the banknote to be verified is discriminated with higher accuracy based on the authenticity discrimination result based on a well-known method and the number of Braille dots. This is a banknote validation device whose purpose is to In FIG. 3, banknote Bi1 linear image sensor P1. P2 and optical sensor Q are
This is the same as the previous embodiment. However, in this case, only the number of dots in Braille is detected. It is counted. 11 is a light transmission amount detection section, which is a linear image sensor Pi.
, P2, and the outputs of the optical sensor Q, the banknote B
The amount of light transmitted at each corner of i (hatched with a - dotted chain line) is detected. Note that the area where the amount of light transmitted at each corner is measured is specified in the same manner as in one embodiment. 12
is a point counting section which selects a point having a value within a predetermined range from the amount of transmitted light, that is, detects a point and counts its number. Reference numeral 13 denotes a determination unit, which represents a well-known determination device that determines the authenticity of banknotes based on features other than Braille, such as optical patterns and magnetic patterns. 14 is the comprehensive judgment department,
The authenticity of the banknote is comprehensively determined based on the output of the dot count section 12 and the output of the determination section 13. Another example of this is
The aim is to further improve the identification accuracy by adding the judgment results based on the counting of Braille dots to the identification results of the well-known method. The operation of this other embodiment will be explained with reference to the flowchart of FIG. In FIG. 4, in step Sll, the value Hj of the amount of light transmitted at each location of each corner is determined. This is due to the linear image sensors Pi and P2, the optical sensor Q1, and the amount of transmitted light detection section 11 in FIG. In step S12, Hj included in the range of the amount of transmitted light, Ha-Hb, is selected, and the number N thereof is counted. This is based on the point counting section 12. In the steps after S3, authenticity is determined,
This depends on the functions of the determining section 13 and the comprehensive determining section 14. That is, in step S13, it is determined whether there is an OK signal (true determination) from the determination unit 13, and the result is N. If so, in step 317 it is determined to be false. If YES,
In step SI4, it is determined whether the number N is 1, and if YES, it is determined to be true in step S16. N
If o, it is determined whether the number N is 2 or not in step 315. If YES, it is determined to be true in step S16, and if NO, it is determined to be false in step S17.

【Effect of the invention】

Therefore, the present invention has the following superior effects compared to the conventional technology. (1) As a result of focusing on the Braille portion that clearly expresses the characteristics of banknotes, the first device of the present invention uses relatively simple means to produce highly accurate identification results that can reliably reject counterfeit and altered banknotes. can get. (2) In the second invention device, in addition to the authenticity determination based on the prior art, the authenticity determination based on the number of Braille characters is used in combination, thereby making it possible to further improve the accuracy of the authenticity determination than in the past.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of one embodiment according to the present invention, FIG. 2 is a flow chart showing the operation of one embodiment, FIG. 3 is a block diagram showing the configuration of another embodiment, and FIG. 4 is a block diagram showing the configuration of another embodiment. 7 is a flowchart showing the operation of another embodiment. Code explanation Bi: Banknote (i=1.2.3), PbF2: Linear image sensor, Q: Optical sensor, 1.11: Transmitted light amount detection section, 2.12 J point section counting section, Ryo 1 Figure Ryo 2 Eye Diagram 3 Light Diagram 4

Claims (1)

[Scope of Claims] 1) A device for identifying the authenticity or denomination of a banknote based on Braille characters formed at a predetermined corner of the banknote and unique to each denomination, wherein the number of dots constituting the Braille character and the 1. A bill validating device, comprising: Braille detection means that determines the column direction based on the amount of light transmitted through the dots. 2) a counting means for counting the number of dots formed at a predetermined corner of the banknote and constituting Braille characters unique to each denomination, based on the amount of light transmitted through the dots; and a determining means for determining authenticity based on a feature amount; the banknote is determined based on a combination of a count output of one or two of the dots by the counting means and a determination of authenticity by the determining means. A bill discriminating device, characterized in that the bill is discriminated as genuine, and the bill is discriminated as counterfeit based on a combination other than the above.