JPH06203242A - Genuineness/counterfeit discriminating device for sheet paper or the like - Google Patents

Abstract

PURPOSE:To improve the capability of genuineness/counterfeit discrimination for sheet paper or the like by reading the print pattern of the sheet paper or the like by utilizing infrared ray and comparing it with previously stored data regarding patterns of genuine tickets. CONSTITUTION:Paper money 1 which is inserted into the device is conveyed by a conveying means 2 such as a belt and an infrared sensor 6 provided at a specific position of the conveying means 2 reads data regarding the print pattern of the paper money l according to data from a position detecting means which operates in relation with the conveying means 2 each time the paper money 1 moves by specific conveyance length. A CPU compares the data with the data regarding the print patterns of genuine paper money to be discriminated which are previously stored in a memory to discriminate whether or not the paper money 1 is genuine. In this case, the infrared sensor 6 consists of an issue part 10 and a photodetection part 11 and the infrared ray projected from the issue part 10 irradiates the paper money 1 and are reflected by the surface of the paper money 1. The photodetection part 11 photodetects the reflected infrared ray and converts them into an electric signal corresponding to the quantity of the infrared ray.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is an apparatus for determining the authenticity of inserted bills in an automatic vending machine or a money changer. In particular, the present invention relates to an authenticity identifying device for banknotes and the like that removes paper sheets copied by some color copying machines.

[0002]

2. Description of the Related Art In a device for ejecting articles or coins from a machine in exchange for inserted bills such as an automatic vending machine or a money changer, a device for determining the authenticity of the inserted bill is provided. It is built in.

In a device such as an automatic vending machine, as shown in FIG. 4, a bill 1 is conveyed by a conveying means 2 such as a belt and an optical sensor 3 provided at a predetermined position of the conveying means 2.
By reading the data regarding the printing pattern of the banknote 1 each time the banknote 1 moves by a predetermined transport length, and comparing the data with the data regarding the printing pattern of the genuine banknote stored in the memory in advance, the authenticity of the banknote is verified. Was generally determined. Here, the optical sensor 3 is composed of a light emitting unit 4 and a light receiving unit 5, and the light emitting unit 4 emits a visible light of a certain amount of light using an LED or the like as a light source, and the visible light emitted from the light emitting unit 4 is a bill. 1 is irradiated with the bill 1
Reflected on the surface of. Since the amount of the reflected light changes depending on the color or shade of the print pattern, the light receiving unit 5 detects the pattern by receiving the reflected light and converting it into an electric signal corresponding to the amount of light.

However, in the conventional apparatus as described above, there is a defect that it is difficult to detect a paper sheet obtained by copying a bill by a color copying machine as a fake article and prohibit the acceptance thereof. It was Therefore, for example, in addition to the method of detecting the magnetism contained in the ink and comparing it with the magnetic pattern of the genuine bill stored in the memory in advance, it is necessary to use another method with a relatively complicated configuration in combination. Therefore, the configuration of the device becomes complicated, and the data must be increased in order to improve the identification accuracy. Therefore, it is necessary to increase the memory capacity and the CPU speed for comparison. As a result, there is a problem that the cost of the device is increased. Further, some of the inks (toners) used in some color copiers have magnetic characteristics similar to those of genuine bills, and in some cases, the fake bills copied by such devices cannot be eliminated.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned defects in the authenticity discriminating apparatus for bills and the like, and it is possible to discriminate the bills without increasing the CPU speed and the memory capacity. An object of the present invention is to provide an authenticity identifying device using an optical sensor having improved ability.

[0006]

SUMMARY OF THE INVENTION Data relating to a genuine note pattern of a paper sheet to be identified, which is read by an optical reading means utilizing infrared rays and is stored in advance in a storage means. By comparing with, the authenticity of the paper sheet is identified.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments. 1 and 2 are a block diagram and a block diagram showing an embodiment of an apparatus according to the present invention, in which a bill 1 inserted into the apparatus is conveyed by a conveying means 2 such as a belt and the conveying means. The infrared sensor 6 provided at a predetermined position 2 moves the banknote 1 by a predetermined transfer length based on the data from the position detection means 7 which operates in association with the transfer means 2 regarding the print pattern of the banknote 1. C and the data relating to the printing pattern of the genuine bill of the bill to be identified, which is stored in the memory 8 in advance.
The authenticity of banknotes is identified by making a comparison with PU9.

Here, the infrared sensor 6 includes a light emitting section 10
The light emitting unit 10 is configured to emit a constant amount of infrared light using an LED or the like capable of emitting infrared light as a light source. The infrared light emitted from the light emitting unit 10 is applied to the banknote 1 and Reflect on the surface. The light receiving section 11 receives the reflected infrared light and converts it into an electric signal corresponding to the quantity of the light, and the quantity of the reflected light changes according to the color or the shade of the print pattern. It can be detected as an electric signal.

With the above-mentioned structure, it is possible to completely identify the false banknotes copied by using the color copying machine (specific color copying machine) of some methods and prohibit the acceptance thereof. This means that the print pattern copied by the specific color copying machine can be recognized as a pattern in visible light, but it is recognized as a blank state in infrared light, that is, as a blank sheet. The inventors of the present invention found out and applied this to the authentication of banknotes and the like.

For example, in the case of a bill in which the patterns A, B and C are printed on the surface of the paper piece 12 as shown in FIG. 3 (a), if the bill inserted in the apparatus is a genuine bill, the same as shown in FIG. 3 (b). As described above, although the sensor outputs exhibiting the levels 13 to 15 corresponding to the symbols A, B, and C and the level 16 related to the paper piece 12 are obtained, when the fake banknotes copied by using the specific color copying machine are inserted (c) in FIG. ), Only the level 16 relating to the paper piece 12 is output, and it is possible to easily and clearly identify the fake bill. Therefore, as described above, according to the present invention, the identification capability of the optical sensor type authentication identification device having a relatively simple structure is improved, and the load on other systems used in combination is reduced.
It is possible to minimize the speed and the memory capacity.

Although the present invention has been described above by taking an example in which a reflected light type infrared sensor is used to identify the authenticity of a bill, the present invention is not limited to this and other than bills. It is obvious that the invention may be applied to a device for identifying a print pattern of a paper sheet including other securities such as a gift certificate, and the infrared light of an infrared sensor is configured to pass through the paper sheet. The same result can be obtained by using the transmitted light type infrared sensor.

[0012]

Since the present invention is configured as described above, only changing the optical sensor from the visible light type to the infrared sensor does not speed up the CPU and increase the capacity of the memory. , It has a remarkable effect in realizing a genuineness / counterfeit identification apparatus having improved authenticity discrimination ability.

[0013]

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of an authentication apparatus according to the present invention.

FIG. 2 is a block diagram showing an embodiment of an authentication apparatus according to the present invention.

FIG. 3 is a diagram illustrating detection data of the authenticity identification device according to the present invention.

FIG. 4 is a configuration diagram showing a conventional authenticity identifying device.

[Explanation of symbols]

1 ... Banknote, 2 ... Conveying means, 6 ... Infrared sensor, 8 ... Memory, 9 ... CPU, 10 ... Light emitting unit, 11 ... Light receiving unit, 12 ... Piece of paper

Claims (1)

[Claims] 1. A paper sheet pattern is read by an optical reading means using infrared rays, and this data is compared with data on a paper sheet pattern to be identified which is stored in a storage means in advance. An authenticity identifying device for paper sheets, characterized in that the authenticity of the paper sheets is identified.