JPS62296292A - Paper money discriminator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention provides a bill discriminating device that irradiates light onto a bill and distinguishes the denomination of the bill based on the reflected light or transmitted light. Regarding.

(Prior Art) Conventionally, as shown in Japanese Unexamined Patent Publication No. 51-6597,
There is a method for determining the denomination of a banknote by irradiating light onto the banknote and detecting the pattern of shading of the banknote from the reflected or transmitted light.

In addition, as shown in Japanese Patent Application Laid-Open No. 51-84695, anti-Q=1 light or transmitted light obtained by irradiating light onto banknotes is converted into light of two different wavelengths (red light and infrared light). There is a banknote discriminating device that detects the banknotes separately and determines whether the banknotes are genuine or false based on the ratio or difference of the detected outputs.

In addition to these optical patterns and color discrimination, the banknote denomination J>
The truth is still being determined.

[Problem that the invention seeks to solve]

The prior art, which is not shown in the above-mentioned conventional examples, has the disadvantage that it is not possible to distinguish even the difference between a banknote and a simple copy note (black and white copy note) because the discrimination is based on so-called monochromatic 'Q' degree.

In addition, the latter can distinguish between banknotes and color "P" notes and color printed rolls, but it does not distinguish between denominations.
There was a need for a stamp to roughly identify the denomination.

The present invention detects a color pattern and determines the denomination thereof, and also identifies a covey ticket or a color printed roll.

[Means for Solving the Problems] The present invention detects the reflected light or transmitted light from the transported banknotes by dividing them into two types of color components, and detects the reflected light or transmitted light from the transported banknotes in the width direction. A detection unit provided at multiple positions, and an I
A calculation section that calculates the ratio of detection signals corresponding to two types of color components subjected to FI in time series, and a calculation section provided for each of these plural calculation sections, which calculates the ratio of detection signals corresponding to two types of color components to be FI, and A denomination that sequentially compares the time-series calculation binding pattern signal based on the base and a pre-stored time-series standard pattern signal for each denomination, and determines the denomination for which the sum of the differences is within a predetermined range. It is composed of a discriminating section, and a denomination determining section that determines the denomination of the banknote to be conveyed to the determined denomination when the plurality of denomination discriminating sections have mutually determined the same denomination. characterized in that at least one of the detection units provided at a plurality of positions in the width direction of the banknote to be conveyed is provided at a position 1q from detecting the watermark part of the banknote to be fed m. It is something to do.

(Function) In the above configuration, each discrimination system consisting of a detection section, a denomination discriminating section, and a denomination discriminating section detects the reflected light or transmitted light from the banknote divided into two color components. Then, the ratio is determined, and the resulting performance pattern signal 3 is compared with the standard pattern signal to determine the denomination or to determine whether the banknote is a counterfeit banknote or not.
IjrI.

In addition, some discrimination systems always detect the watermark part of banknotes, and because this watermark part clearly shows the difference in paper quality between banknotes and color copy tickets/color printed rolls, only genuine banknotes are detected. The denomination is determined (specified).

And the denomination determined by the discrimination system is...
Only when this happens, the denomination of the banknote is determined.

(Example) Next, the embodiment shown in the drawings will be explained.

FIG. 1 is a block diagram showing the structure of the banknote discrimination table of the present invention;

Reference numbers 1A to 1C1 in the figure indicate that the paper money (
JJ light or transmitted light is divided into two color components, for example red (
wavelength 610nm) and blue (wavelength 45Q nrT+
) is a detection unit that outputs a detection signal R-8.

As is clear from FIG. 2, which shows the positional relationship between the transported banknote S and each of the detection units 1A to 1C, these plurality of detection units 1Δ to 1C are arranged in the width direction of the banknote S that is transported in the direction indicated by the arrow. It is provided at a position where it can detect the lIl digit number of , and furthermore, at least one of the plurality of detection parts 1A to 1C is located in the armpit of the face.

It is provided at a position to detect and IFI the watermark part S' of the banknote S.

Incidentally, among the J banknotes S shown in FIG. 2, the ones indicated by symbols S1 to S3 indicate a -10,000 yen note, a 5,000 yen note, and a 1,000 yen note, respectively.

Further, FIG. 3 shows a specific example of the reflected light detection type of the plurality of detection units 1Δ to 1C.

In this specific example, optical fibers are used to facilitate the installation of detection elements, etc. to the banknote conveyance section, and the guide plate 11 that guides the banknote S to be conveyed.
A support block 12 is attached to one side of the support block 11, and a light emitting fiber optic cable 13 and a light receiving fiber cable 14 are inserted into and supported by the support block 12.

On the end surface of the proximal end of the light-transmitting optical fiber cable 13,
A translucent lamp 15 (for example, a halogen lamp) is provided.

The receiving fiber cable 14 includes two optical fibers 1.
4a and 14b, these two optical fibers 14
8.1. Optical filters 15R and 15B (color filters) that allow only light of the specific wavelengths (R = 610 nm, B = 450 nm) to pass through are installed on the end face of the extraction side of the ILB.
The light-receiving elements 16a and 16b are installed via the light receiving elements 16a and 16b.

Note that the optical filters 15R and 158% may be arranged on the light-receiving side end faces of the two optical fibers 14a and 14b in the support block 12.

In addition, when comparing and determining signals detected by the light receiving elements 168 and 16b, in order to avoid misjudgment based on fluctuations in the received light level due to changes in ambient temperature, etc., a correction plate is installed to detect the received light level when no determination is made. 17 (for example, a monochrome plate such as white) can be provided on the side of the guide plate 11 facing the support block 12.

However, this correction plate 17 is used only in the reflected light detection type of this specific example, and in a transmitted light detection type detection device (not shown), it is configured so that the projected light is directly received. By doing so, the received light level at the time of non-discrimination is detected and corrected.

Next, reference numerals 2A to 2C in FIG.
Detection signal R- corresponding to two types of color components obtained for each C
The calculation unit calculates the ratio X (X=R/B) of 8 according to the time series, and the time series calculation results are patterned @X i
(X i = Ri/B i ) is produced.

In addition, in the calculation units 2Δ to 2C, the calculation result putter No. 218 Xi after correcting the detection signal R-B as described above is
To obtain , detect and store the signal Ro s - Bo s at the time of non-discrimination of banknotes, TJJ Straw Off, and calculate X i = (Ri/RoS)/<B i/3os) =
It is sufficient to perform the calculation (R1x130s)/(B1xRos).

Further, symbols 3△ to 3C indicate time-series calculation result pattern signals X1 based on two types of color components obtained for each of the calculation units 2A to 2C, and time-series data for each denomination stored in advance. reference pattern signal K 1-n (n=
1 to 12: 3 denominations x 4 directions = 12 patterns) and determines a denomination for which the total difference Y is within a predetermined range.

In other words, perform the calculation Y=Σ(X1-Ki-n), and obtain the reference pattern signal that satisfies the condition Y<Con5t).
(Find i-n.

As is clear from the above, it is possible to determine the direction of the lower obverse center at the same time as the denomination. Further, the denomination discrimination units 3A to 3C receive the reference pattern signal)
Although it includes a storage unit (not shown in the figure) that stores i-n, it is also possible to organize it separately.

Reference numeral 4 denotes a denomination determination unit that determines the denomination of the banknote S to be conveyed to the determined denomination when the denomination determination units 3A to 3C all determine the same denomination and direction. .

Naturally, if one of the denomination determination units 3A to 3C determines that the denomination or direction of the stomach is indistinguishable (all counterfeit notes are indistinguishable), (well, the denomination determination unit 4
outputs a counterfeit bill signal.

Next, I will explain its operation.

When the banknote S is conveyed between the guide plates 11 and 11, the anti-OJ light or the transmitted light from the banknote S is divided into two color components R-13 and detected in the detection units 1A to 10, and a calculation is performed. Part 2△・~2C has J-5 and its ratio X
=R/B is calculated.

Then, the denomination result pattern signal Xi obtained by the derivation parts 2A to 2C is compared with the reference pattern signal (i-n) in the denomination discriminating parts 3A to 3C to determine the denomination (inner direction). Or the ticket is determined to be a counterfeit ticket.

Here, among the detection units IA to 1C J3, there is one that always detects the watermark part S' of the banknote S, and in this watermark part S', the paper quality of the banknote S and the color copy ticket/color printing roll is detected. Since the difference between banknotes is clearly visible, the denomination can only be determined (specified) in the case of genuine banknotes.

In other words, as shown in Fig. 4, the difference in the output signal for each wavelength in this watermark portion S' is clearly different from that of the real banknote S.
In the case of , the output signal tends to become larger as the wavelength becomes longer, whereas in the case of the counterfeit ticket Is of a color copy ticket/color printed volume, the output signal tends to average out regardless of the length of the wavelength. It shows.

Therefore, in the case of a color copy ticket/color printed roll, the discrimination system (detection section 1Δ~IC, performance section 2Δ~2C, and denomination discrimination section 3A~
In 3C), the decoding result pattern signal Xi in this watermark portion S' is greater than the reference pattern signal Ki-n by < jF+t, and it is therefore determined that the bill is unidentifiable (counterfeit bill).

Then, only when the denominations and directions determined in all the denomination determination sections 3A to 3C match, the denomination determination section 4
The denomination signal is output at (the signal can also be output without indicating the direction)
If one of the denomination discriminators 3Δ to 3C determines that the denomination or direction is different or that the denomination cannot be determined (counterfeit bill), a counterfeit bill signal is output.

〔Effect of the invention〕

In this way, the present invention detects reflected light or transmitted light from a banknote by dividing it into two types of color components, determines the ratio, and compares the determined sieving result pattern signal with a reference pattern signal to determine the denomination. One discrimination system is arranged so that the watermark part of the banknote is always detected, and the banknote in this watermark part and the color copy note are determined to be counterfeit.
The denomination of the banknote is determined (specified) only in the case of true banknotes by detecting the difference in paper quality from the color printed volume, and only when the denominations determined by all discrimination systems match, the denomination of the banknote is Since the denomination has been determined, it is now possible to detect the color pattern and determine the denomination, and it has also become possible to identify color copy tickets and tickets with color stamps. be.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 shows the entire section 1.
2 is a layout diagram showing the positional relationship between the banknotes being conveyed and each detection section, FIG. 3 is a block diagram showing a specific example of the detection section of the reflected light detection type. The figure is a diagram illustrating the difference in output signals by wavelength in the watermark portion of genuine banknotes and counterfeit banknotes. 1A to 1C...detection section, 2A to 2C... calculation section, 3
A to 3C...Denomination discrimination section, 4...Denomination determination section, S
(S')...Banknote (watermark part), Xi...Calculation result pattern signal, K1-Ro...Reference pattern signal. Figure 1 Figure 4 Procedure Nerl) J-[E g, + (Method) 1986
Special Application No. 140879 2, Title of the invention: Banknote Discriminator 3, Amendments to Riseki y+Trt, etc. Special 1 Applicant [1-Rel Bank Machine Co., Ltd. 4, Agent Tokyo Metropolitan Government 1g Yachizu 2-chome 1-5';'35, Amendment order [1-1, 1988 + January 26 (Despatch I]) 6, Drawings subject to amendment

Claims (1)

[Scope of Claims] The device detects reflected light or transmitted light from the transported banknotes by dividing them into two types of color components, and includes a detection unit provided at a plurality of positions in the width direction of the transported banknotes; , an arithmetic section provided for each of these plurality of detection sections, which calculates the ratio of detection signals corresponding to two types of color components obtained for each detection section in time series; The time-series calculation result pattern signal based on the two types of color components obtained for each calculation unit is sequentially compared with the time-series reference pattern signal for each denomination stored in advance, and the difference between them is calculated. A denomination discriminating unit that determines a denomination whose total is within a predetermined range, and when the plurality of denomination discriminating units determine that all the denominations match, the denomination of the conveyed banknote is set to the determined denomination. and a denomination determination unit that determines the denomination, wherein at least one of the detection units provided at a plurality of positions in the width direction of the transported banknote detects a watermark portion of the transported banknote. A banknote discriminating device characterized in that it is provided at a position where a banknote is recognized.