JPH10149471A - Discrimination device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To speedily judge the type and the inserting direction of inserted paper money in a discrimination machine. SOLUTION: In the device, paper money is inserted, the optical or magnetic pattern of paper money is read by an optical sensor or a magnetic sensor and it is compared with the standard pattern data of paper money, which is previously stored in a storage means 14, and the authenticity of paper money is judged. In such a case, the upper/lower limit values of the standard pattern in the whole directions and whole lengths of paper money, which can be discriminated, are stored in the storage means 14. The output signals of the pattern, which are detected by inserting paper money being an discrimination object, are successively compared with the upper/lower limit values of the respective standard patterns which are stored. The standard pattern which is not matched when a compared result that is not matched with the upper/lower limit values of the respective standard patterns is obtained is removed from comparison candidates. The type and the direction of paper money are judged before the reading of the pattern for the whole lengths in paper money terminates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to banknotes, securities, etc.
(Hereinafter referred to as bills).

[0002]

2. Description of the Related Art As shown in FIG. 1 (a side view showing the structure of a conventional paper money discriminating apparatus), a paper money or the like 1 is conveyed by a conveying means 2 such as a belt. Along with the reflection type sensor 3 provided at a predetermined position of the transporting means 2, data on a printing pattern of the banknote 1 is read and stored every time the banknote 1 moves by a predetermined transport length,
When the reading of the entire length of the bill 1 is completed, the type of the bill 1 is determined by comparing this with standard pattern data relating to the printing pattern of the bill 1 stored in the memory in advance. Was common. The idea of the determination is the same even when the print pattern of the magnetic ink is read by using the reflection sensor as the magnetic sensor, and therefore, the reflection sensor (optical sensor) will be described below.

The reflection type sensor 3 comprises a light emitting section and a light receiving section, and the light emitting section emits a certain amount of light using an LED or the like as a light source. 1 is reflected at the surface. Reflected light is bills 1
Since the amount of light changes in accordance with the color or shading of the print pattern, the light receiving unit detects the pattern by receiving the reflected light and converting the reflected light into an electric signal corresponding to the amount of light.

In the memory, patterns are stored in advance for all types of bills and the like that can be identified, and the patterns are sequentially taken out and compared with the pattern data detected by the reflection type sensor. At this time, bills etc.
Because it can be transported in four different directions on the ground,
In general, four data are stored in a memory for each bill in consideration of the direction in which the bills are conveyed, and this device enables reception of three kinds of bills and the like. In some cases, every time one bill or the like is inserted, comparison must be performed 12 times after the end of pattern detection. If the number of sensors increases, the number of sensors becomes 12 times.

In the above method, a large number of comparisons are performed after the end of the pattern detection, so that the determination time becomes long. As a technique for solving this, for example, Japanese Patent Application Laid-Open
Japanese Patent No. 3142 discloses that a pattern of a bill or the like conveyed by a conveying unit is read by a pattern reading unit and compared with data on a pattern of a bill or the like to be identified which is stored in a storage unit in advance. An apparatus for identifying a type is disclosed. The identification device includes external dimension detecting means for detecting the external dimensions of the bills and the like to be conveyed, stores the data in the storage means after grouping the data in advance according to the external dimensions, and stores the data in the corresponding external dimension group. Only the belonging data is taken out from the storage means, and this is compared with the read data from the pattern reading means to determine the type of the bill or the like.

[0006] The use of two types of identification data, the external dimensions and the print pattern, improves the discrimination ability and makes it possible to speed up the type identification of bills and the like.

[0007]

Since the data is compared after detecting the external dimensions for identification, it is necessary to detect the full length of a bill or the like.
(Full length) must be brought in.

If there is no difference between the types of bills and the like, grouping cannot be performed, and if there are many types in the group, it also takes time.

If the inserted bill or the like is pulled out to the discharge side before the determination, the pulled bill or the like cannot be determined.

[0010]

A bill or the like is inserted, an optical sensor or a magnetic sensor reads an optical or magnetic pattern of the bill, etc., and compares it with standard pattern data of the bill or the like stored in a storage means in advance. In a discriminating apparatus that determines the authenticity of a bill or the like, the upper and lower limits of a standard pattern for all directions and the entire length of the discriminable bill and the like are stored in a storage means, and the pattern detected by insertion of the bill to be identified or the like is stored. Are sequentially compared with the upper and lower limit values of all the standard patterns stored in each predetermined reading cycle, and when the comparison result that does not correspond to the upper and lower limit values of each standard pattern is obtained, the output signal is not applicable. The standard pattern is excluded from the comparison candidates, and the type and direction of the bill and the like are specified before the reading of the entire length pattern of the bill and the like is completed.

At the time when a result that does not correspond to any of the stored standard patterns is obtained, the inserted bill or the like is returned.

When the type and direction of the bill and the like are determined and the bill and the like are specified, another identification is started while the comparison of the type and direction is continued.

A plurality of patterns are read and compared for one bill or the like.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 is a plan view showing the structure of a bill discriminating apparatus according to the present invention. The bills 1 are inserted into the insertion slot 9
, And are carried in by the belt 2 serving as a conveying means. The four reflective sensors 4, 5, 6, and 8 each correspond to a bill or the like 1
The light (8 is the lower surface of a bill or the like) is irradiated with light, the light reflected on the surface of the bill or the like 1 is received, and the print pattern information of the bill or the like 1 is read. The transmission type sensor 7 irradiates light to the bill 1 and the like, receives light transmitted through the bill 1 and reads information such as a print pattern of the bill 1 and a watermark. The bill 1 or the like that has been identified and determined to be true in the authenticity determination is conveyed by the belt 2 and discharged from the discharge port 10. The banknotes 1 determined to be counterfeit are conveyed to the insertion slot 9 side by the belt 2 and returned.

FIG. 3 is a block diagram showing the configuration of an embodiment of the identification device of the present invention. 11 is a conveyance progress detection means, 12 is a memory, 13 is a candidate storage means, 14 is a read detection data storage unit, and 15 is a comparison determination means. The transport progress detecting means 11 is a position detecting means such as a rotary encoder which operates in conjunction with the transport means 2, and obtains timing for reading detection output values of the reflection type sensors 4, 5, 6, 8 and the transmission type sensor 7. It is for. Memory 1
Reference numeral 2 is for reading print information such as a plurality of identifiable genuine bills and storing data of upper and lower limit values obtained by adding an allowable width to the tally result as a standard pattern. The number of data is the number of measurement points equal to the number of sensors from all directions in which bills and the like can be inserted. The candidate storage means 13 stores all directions of acceptable bills and the like set in the discriminating machine as identification candidates, and functions to narrow down the identification candidates according to the result of the comparison / determination means 15 described later. When it is determined that the type and the direction do not correspond, it is excluded from the comparison candidates and excluded from the target. The comparison judging means 15 is for sequentially comparing the output values of the reflection sensors 4, 5, 6, 8 and the transmission sensor 7 stored in the read detection data storage section 14 with the standard patterns in the memory 12. Storing the result in candidate storage means 1
Output to 3.

Hereinafter, a method of comparing the detection data of each sensor with a standard pattern stored in a memory will be specifically described. FIG. 4 is a diagram for explaining an identification method used in the present invention, and is a diagram in which data in the identification device and read data are graphed. FIG. 5 is a schematic diagram for explaining the present invention, and is a diagram for explaining the detection data of the sensor, the contents of the memory, and the operation of the candidate storage means and the like.

FIG. 4 collectively shows information obtained by a sensor from a bill or the like from the start of detection to the end of detection. For example, the longitudinal direction of a bill is detected at 10 points, and the detection level is plotted. is there. Curve A in the figure,
B indicates an upper limit value and a lower limit value of a standard pattern set based on data obtained by reading a plurality of genuine bills and the like using an identification device. The width set from the data may be determined in consideration of the reliability of the identification device. A curve C is obtained by plotting data obtained by reading a certain banknote or the like with an identification device. Upper limit A
, Or approaching the lower limit B, but all fall within the allowable range.

In FIG. 5, an upper limit value and a lower limit value of the standard pattern are stored in the memory 12. For example, assuming that three types of bills are identified by reading 10 points, the number of data to be stored is 3 types × 4 directions that can be inserted × the number of sensors 5 × 10 points × upper limit and lower limit = 1200
Becomes

The read detection data storage section 14 reads detection data from the five sensors into the respective storage sections. Since the positions of the sensors are different, reading is performed at a predetermined timing from the time when each sensor starts detection. The read data is stored for each point. The detection data from the reflection type sensor 4 is sequentially stored from 1P to 10P, and the stored data is sequentially stored every time the data is stored. , At the lower limit. It is compared with 24 kinds of data of the type of banknote (I, II, III) × the four directions (A, B, C, D) which can be inserted × 1P upper limit value and lower limit value. The data is (IA-4-1)
(P-upper limit) to (IA-4-1P-lower limit), (I
-B-4-1P-upper limit), (IB-4-1P-lower limit), ... (III-D-4-1P-upper limit), (III-D
-4-1P-lower limit). Data from the sensors 5, 6, 7, and 8 are processed in the same manner.

The detection data from each sensor and the data in the memory 12 are successively compared, and if there is data that deviates from the upper limit or the lower limit at a certain point (tentatively, III-B-4-3)
(P-upper limit value) After that, it is excluded from data comparison candidates
(Ie, 4P and later). When the data of each sensor falls within the allowable value, the data is continuously compared with the data group in the memory 12. If the banknote type and the twelve types of data groups in the four directions of insertion are all excluded from the candidates, the banknote is judged to be a fake note at that point and returned to the insertion slot and discharged.

In the description, 10 points are read in the longitudinal direction of the bill, but actually, comparison at more points is required. Also, it is read out how many points deviate from one candidate in one data group with respect to one sensor as a comparison candidate (NG) or how many points deviate from a data group corresponding to five sensors with NG. The determination may be made in consideration of the number of points, the reliability of the sensor, the reliability of the discriminator, and the like. 6 and 7 are diagrams for explaining the candidate storage unit and the determination result totaling unit in detail. FIG. 6 is a diagram for explaining that three types of denominations (types of banknotes) and four insertable directions are excluded from the candidates. The 1/0 flag is set, and 1 is first set as all candidates. When the data is excluded from the candidates as determined by the determination result totaling unit shown in FIG. 7, the data in the memory 12 is excluded from the comparison as 0. Whether the direction is excluded or the denomination is excluded depends on the determination result of the determination result totaling unit. The determination result totaling unit has a function of totalizing the number (NG number) outside the allowable range of the upper and lower limit values for each sensor with respect to the denomination and the insertion direction, and a function of calculating the NG number for each sensor for each denomination and the insertion direction. It has a function to total the total. The results from the comparison and determination means are sequentially tabulated, and when the number of NGs reaches a preset number, the determination result is sent to the candidate storage unit. The number of NGs set in advance is for each sensor,
It is possible to set the total number for each denomination and the denomination. For example, each sensor can be set to be within the allowable NG number (OK) for up to two NGs, and to be OK for up to five NGs by denomination.

According to the identification device of the present invention, when one third of the entire length of a bill or the like passes through the sensor unit, the type and the insertion direction of the bill are determined. Thereafter, the comparison with the corresponding data group is continued, and the determination of another item (for example, the outer dimension) is started.

[0023]

According to the present invention, it is not necessary to compare all the data with the bill for identification, and the comparison of the data is started sequentially from the time the bill is carried in, and the number of comparison data is reduced each time. Immediately after reading of all data is completed, the authenticity of a bill or the like can be determined.

Since a plurality of sensors are provided and the respective data are successively compared and determined, the type and insertion direction of the bill can be determined immediately.

Since the possibility of determining the type of a bill or the like at the same time when the bill or the like has passed through the sensor is high,
Even when the inserted bill to be identified or the like is pulled out from the discharge side, there is a large possibility that the type of the bill or the like can be determined. This is effective when there is a stacker behind the discriminator and an accidental withdrawal by the stacker occurs before a transaction such as a bill is determined from the discharge side of the discriminator.

[0026] Foreign matter, counterfeit bills and the like are not unconditionally carried to the end, and adverse effects caused by carrying foreign matter, counterfeit bills and the like are reduced.

[Brief description of the drawings]

FIG. 1 is a side view showing a configuration of an identification device for banknotes and the like according to the related art.

FIG. 2 is a plan view showing a configuration of an identification device according to the present invention.

FIG. 3 is a block diagram showing an identification configuration of the identification device of the present invention.

FIG. 4 is a graph of data in a memory of the identification device and read data of bills and the like.

FIG. 5 is a schematic view for explaining the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Banknote etc. 2 Transport means 3 Reflection sensor 4 Reflection sensor 5 Reflection sensor 6 Reflection sensor 7 Transmission sensor 8 Reflection sensor 9 Insertion opening 10 Outlet 11 Conveyance progress detection means 12 Memory 13 Candidate storage means 14 Read detection Data storage unit 15 Comparison judgment means

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[Procedure amendment]

[Submission date] January 17, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Fig. 6

[Correction method] Added

[Correction contents]

FIG. 6 is a diagram for explaining a candidate storage unit;

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Fig. 7

[Correction method] Added

[Correction contents]

FIG. 7 is a diagram for explaining a judgment result totaling unit;

Continued on the front page (72) Inventor Hirohiko Aiba 4107 Miyoshida, Miyoshida-cho, Kitasaku-gun, Nagano Prefecture 5 Inside Miyota Co., Ltd.

Claims (4)

[Claims] 1. A bill or the like is inserted, an optical or magnetic pattern of the bill or the like is read by an optical sensor or a magnetic sensor, and the bill is compared with standard pattern data of the bill or the like stored in a storage means in advance. In an identification device for judging authenticity, the storage means stores upper and lower limits of a standard pattern for all directions and the entire length of an identifiable bill, and outputs an output signal of a pattern detected by insertion of a bill to be identified. , By sequentially comparing the upper and lower limits of all the stored standard patterns, and removing standard patterns that did not correspond at the time of obtaining a comparison result that did not correspond to the upper and lower limits of each standard pattern from the comparison candidates, such as banknotes An identification device for identifying a type and a direction of a bill or the like before reading of a pattern corresponding to the entire length of the bill is completed. 2. The identification device according to claim 1, wherein the inserted bill or the like is returned when a result that does not correspond to any of the standard patterns is obtained. 3. The identification device according to claim 1, wherein when the type and direction of the bill and the like are determined, another identification is started while continuing to compare the type and direction. 4. The method according to claim 1, wherein a plurality of patterns are read from one bill and compared.
An identification device as described.