JPH10188073A - Identifying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable speedy truth/false discrimination by storing standard data, comparing data read from an identification object paper money or the like with the standard data, specifying the denomination and direction of paper money or the like on the initial reading start stage of identification object paper money, etc., and defining only a specified standard pattern as a comparison object later. SOLUTION: Upper and lower limit values having allowable width in the standard pattern prepared based on data previously read from the true paper money or the like are stored in a memory 16. Next, data read and detected by reflection type sensors 4-7 and a transmission type sensor 8 are successively stored in a memory 14. A comparative discriminating means 15 discriminates truth/false by comparatively discriminating the read data in the memory 14 corresponding to the memory 16. In this case, when the paper money is inserted into an identifying device and reaches the sensors and the reading and detecting of data are started, the denomination and inserting direction of paper money or the like are discriminated and specified on the initial stage and only the specified standard pattern is defined as the comparison object. Thus, the comparison object patterns are reduced and discrimination time can be shortened.

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 concept of determination is the same whether reading a print pattern of magnetic ink using a reflection sensor as a magnetic sensor or reading a print pattern using a transmission sensor. 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.

A standard pattern is previously stored in the memory for all types of bills and the like that can be identified, and these are sequentially taken out and compared with the data of the pattern detected by the reflection type sensor. At this time, since the bills may be transported in four different directions, front and back, and top and bottom, four data per bill etc. are considered in consideration of the direction in which the bills are transported. Is generally stored in a memory, and if this device is capable of accepting three types of bills and the like, every time one bill or the like is inserted, 12 times after the end of pattern detection You have to make a comparison. When the number of sensors increases, the number of sensors becomes 12 times, and in the present invention, the case where the number of sensors is 4 will be described, so that the number of standard patterns to be stored is 48.

In the above method, the number of comparisons (48) after the end of the pattern detection requires a long determination time. As a technique for solving this problem, for example, Japanese Patent Application Laid-Open No. 6-203142 discloses a pattern such as a bill to be conveyed by a conveying means, which is read by a pattern reading means and stored in a storage means in advance. A device for discriminating the type of a banknote or the like by comparing the data with data relating to the pattern 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 discriminating ability is improved by using two types of identification data of the external dimensions and the print pattern, and the number of data to be compared is reduced by using only the types of external dimensions such as banknotes to be identified. Since the number of data is reduced from the total number of data to the number of data in the group, the speed can be increased.

[0007]

In order to discriminate, since the data is compared after detecting the external dimensions, the entire length of the bill must be detected.
(Full length). Even if the data in the group is large, the number of data is large, and it takes time to determine if the data comparison processing speed is not increased. To increase the processing speed, a CPU having high capability must be used, which increases the cost.

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.

The inserted bill and the like are conveyed for the entire length before identification, and it takes time to make a decision. Therefore, if the bill or the like is pulled out to the discharge side before the decision by a stacker or the like, the bill or the like that has been pulled cannot be discriminated.

[0010]

A bill or the like is inserted, an optical or magnetic pattern of the bill or the like is read by a plurality of optical sensors or magnetic sensors, and standard pattern data of the bill or the like stored in a storage means in advance is used. In the identification device that determines the authenticity of bills and the like by comparison, data obtained by a setting rule from among a plurality of fixed zones for each sensor set in advance, and a combination of the data is stored as standard data,
In the same way, the data read from the banknote to be identified is calculated and compared with the standard data, and the type and direction of the banknote, etc. are specified at the initial stage of reading of the banknote to be identified, and then only the specified standard pattern is compared. To determine the authenticity of a bill or the like.

The average value, the maximum value, the minimum value or the maximum value and the minimum value in the fixed zone are obtained as data, the ratio between the data and the reference value is calculated, and the data is classified and encoded according to the ratio. Standard data is obtained by combining codes for each sensor.

The data for each fixed zone obtained from the banknotes to be identified and the like are compared with the standard data, standard pattern comparison candidates are given, and the type and direction of a predetermined number of candidates in a plurality of fixed zones are determined as standard pattern comparison candidates. Identify.

[0013]

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 reflection sensors 4, 5, 6, and 7 each correspond to a bill or the like 1
Irradiates light on the surface (7 is a lower surface of a bill or the like), receives light reflected on the surface of the bill 1 or the like, and reads print pattern information of the bill 1 or the like. The transmission sensor 8 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. 4 is a graph showing the data in the memory of the identification device and the read data of bills and the like. The information obtained by the sensor from the bills and the data in the memory are summarized from the start of detection of bills to the end of detection. It is represented. Curves 11 and 12 in the figure represent upper and lower limits (so-called standards) calculated by reading a plurality of genuine bills and the like by an identification device and determining a certain allowable width in a standard pattern set based on the data.
Is represented. The width set from the data may be determined in consideration of the reliability of the identification device. A curve 13 is obtained by plotting data obtained by reading a certain bill or the like with an identification device. Although approaching the upper limit 11 or approaching the lower limit 12, all are within the standard.

FIG. 3 is a block diagram showing the configuration of an embodiment of the identification device of the present invention. Each sensor (4-8)
Are sequentially stored in the memory 14. The memory 14 stores the read detection data (1
To n) are stored. The memory 16 stores an upper limit value and a lower limit value in which a standard pattern created based on data read with genuine bills or the like has an allowance. Assuming that there are three types of banknotes, four types of insertion states, n reading points, and five sensors, 3 × 4 × n × 5 × 2 = 12
0 × n data are stored. In addition, the number outside the permissible standard out of n is stored. The comparing and judging means 15 compares and judges the read data of the memory 14 corresponding to the memory 16, and the counting means for transferring the result to the counting means 17 counts the judgment results (non-standard number). The judging means 18 judges the type and authenticity of the bill by comparing the counting result of the tallying means 17 with the number of non-permissible standards in the memory 16.

The read detection data storage memory 14 has 5
The data from the sensors is read into each storage unit. Since the positions of the sensors are different, reading is performed at a predetermined timing from the time when each sensor starts detecting a bill or the like. The read data is stored for each point.
The detection data from the reflection type sensor 4 is stored from 1P to nP sequentially, but the stored data is sequentially stored each time the data is stored. , At the lower limit. Banknote types (I, II, III) x 4 insertable directions (A, B, C, D) x 1P upper limit, lower limit 2
4 will be compared. The data is (I-A-
(4-1P-upper limit) to (IA-4-1P-lower limit), (IB-4-1P-upper limit), (IB--4-)
(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.

As described above, it is possible to start the data comparison immediately after the read detection data is stored, but in order to compare 24 data for each point of one sensor, a plurality of data must be increased unless the data comparison processing speed is increased. Cannot process the read detection data of the sensor. In order to increase the processing speed, a CPU having a high capacity must be used as the CPU of the comparison / determination means 15, resulting in an increase in cost.

Therefore, according to the present invention, when a bill is inserted into the identification device and the bill reaches the sensor and data is read and detected, the type and insertion direction of the bill and the like are determined and identified in the initial stage, and the specified standard pattern is determined. By setting only the comparison target, the number of comparison target patterns is reduced, and the comparison determination time is shortened.

FIG. 5 is a block diagram for explaining the present invention, and FIG. 6 is a diagram showing a graph of read detection data and a fixed zone for explaining the present invention. As shown in FIG. 6, a plurality of fixed zones are provided in the initial data portion of the read detection data. Hereinafter, a method of determining the type of bill and the insertion direction based on a combination of data from a plurality of sensors will be described.

An embodiment of the present invention will be described with an example in which read detection data of four to four sensors out of five sensors is used. Data of 1 to n is stored as the standard pattern, but n is assumed to be 300. Data 1 to 1
During 00, a plurality of fixed zones are set in advance. Assume that there are three fixed zones. Although the position and width of the fixed zone are determined by experiments, the number of data is assumed to be 10 for all three fixed zones. Various rules for setting data obtained in the fixed zone are conceivable, and any of an average value, a maximum value, a minimum value, a difference between the maximum value and the minimum value, and the like of the data in the fixed zone may be used. A fixed zone in which the type of bill and the insertion direction can be easily determined according to the data setting rule to be used may be set. Therefore, an example in which the difference between the maximum value and the minimum value is used as data will be described below.

Fixed zones 1, 2, and 3 common to each sensor are set. The difference between the maximum value and the minimum value of the data in the fixed zone is obtained by the standard pattern, and the sensor output is corrected. The reference value is set to 100, and the 100% of the difference is obtained, coded for each 100% rank, and stored in the memory 19. For example, suppose that the data of four sensors in the fixed zone 1 in the insertion direction A of the bill I are 30%, 40%, 82%, and 16%, respectively. The ranking to encode is 0% ~ 25%, 25% ~
The four ranks are 50%, 50 to 75%, and 75% to 100%, and are denoted by 00, 01, 10, and 11, respectively. The four data are coded by rank, and the four codes are combined to form 0101-1100. This is expressed in hexadecimal notation and stored as 5C in the IA-zone 1 of the memory 19 (the encoding rank is appropriately set by data obtained from the fixed zone). In consideration of variations in read detection data due to variations in transport of bills and the like in the identification device, all data having a possibility in the IA-zone 1 is stored. It is sufficient to set a fixed zone through which data can be obtained as stable as possible by experiments. 3 in the memory 19
The combination data of the denomination 4 insertion state (A, B, C, D) 3 fixed zones is stored.

The data stored in the memory 14 is calculated for each set fixed zone, the combination data is obtained, and the calculation result is stored in the memory 20. The data in the memory 19 and the memory 20 are compared by the comparing and judging means 21, a candidate for each fixed zone is listed, and stored in the memory 22. If the data in the fixed zone 1 is 01 for sensor 4, 01 for sensor 5, 11 for sensor 6, and 00 for sensor 7, sensors 4 and 5
Is 0 in the combination 0101 and C is 1100 in the combination 1100 of the sensors 6 and 7. As a result, the combination data in the fixed zone 1 is 5C. Therefore, from the data in the fixed zone 1 in the memory 19, IA and III-B are candidates. As Next, if the data in the fixed zone 2 is 00 for the sensor 4, 11 for the sensor 5, 11 for the sensor 6, and 00 for the sensor 7, 3 for the combination 0011 of the sensors 4 and 5, and 1100 for the combination of the sensors 6 and 7 C, and as a result, the combination data in the fixed zone 2 is 3C, so that IA is given as a candidate from the data in the fixed zone 2 in the memory 19. Next, the data in the fixed zone 3 is
If the sensor is 11, the sensor 5 is 11, the sensor 6 is 01, and the sensor 7 is 00, the combination of the sensors 4 and 5 is 3 and the combination of the sensors 6 and 7 is 4 and the result is 4 in the fixed zone 3. Is 34, so that IA is given as a candidate from the data in the fixed zone 3 of the memory 19.

The direction of the denomination of the denomination of IA, in which the inserted bill or the like rises three times in three zones, is determined. Thereafter, the data of the sensor 4 of the memory 14 and the IA of the memory 16 are determined.
, The authenticity of the inserted bill is determined by comparing only the standard pattern data. The method of determining the comparison candidate is to determine whether all the zones match, whether the number of first candidates is large, whether the number of m zones is n or more, or the data such as the number of fixed zones to be set and the target identification bill. , The number of sensors to be combined, and the like. It is not necessary to narrow down the number of comparison candidate standard patterns to one. In this example, the effect of the present invention is exhibited if the number of twelve standard patterns becomes half or quarter.

According to the identification device of the present invention, when one third of the total 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 can be continued, and another recognition method can be started.

[0025]

According to the present invention, the comparison of the data in the fixed zone is started successively from the time of bill introduction, the denomination and the insertion direction are determined in the initial stage of insertion, and thereafter, only the comparison candidate standard pattern is compared. Therefore, it is not necessary to compare all the data with the standard pattern, and the comparison and determination process can be performed quickly, and the authenticity of a bill or the like can be determined immediately after reading of all the data is completed.

For this reason, it is not necessary to stop the transportation for identifying bills and the like, so that the life of the transportation motor can be extended. Further, an inexpensive identification device can be provided without requiring an increase in the size of the CPU.

Since a plurality of sensors are provided and the determination is made based on a combination of the respective data, the reliability of authenticity determination of a partially abnormal banknote such as a synthetic banknote is improved.

Since it is more likely that the type of a bill or the like can be determined at the same time that the bill has passed through the sensor,
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 identification device and an accidental withdrawal by the stacker occurs before a transaction such as a bill is determined from the discharge side of the identification device.

When there is no comparison judgment candidate, the bills and the like can be returned at that time, so that foreign substances and counterfeit bills are not carried in unconditionally to the end. Evils 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 block diagram for explaining the present invention.

FIG. 6 is a diagram showing a graph of read detection data and a fixed zone 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 Reflection sensor 8 Transmission sensor 9 Insertion opening 10 Outlet 11 Upper limit value 12 Lower limit value 13 Read data 14 Memory 15 Comparison judgment Means 16 Memory 17 Aggregation Means 18 Judgment Means 19 Memory 20 Memory 21 Comparison Judgment Means 22 Memory

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hirohiko Aiba 4107 Miyoshida, Miyoshida-cho, Kitasaku-gun, Nagano Prefecture 5 Inside Miyota Corporation

Claims (3)

[Claims] 1. A bill or the like is inserted, an optical or magnetic pattern of the bill or the like is read by a plurality of optical sensors or magnetic sensors, and the bill is compared with standard pattern data of the bill or the like stored in a storage means in advance. In the identification device that determines authenticity, etc., the combination data of the data obtained according to the setting rule from a plurality of preset fixed zones for each sensor is stored as standard data, and the read data from the identification target bill etc. is similarly calculated. The combination data is obtained and compared with the standard data, and the type and direction of the bill etc. are specified in the initial stage of the start of the reading of the bill etc. to be identified based on the number of matching data, and thereafter only the specified standard pattern is compared. An identification device characterized by the following. 2. The data obtained by the setting rule is an average value in a fixed zone, a maximum value in a fixed zone, a minimum value in a fixed zone, or a difference between a maximum value and a minimum value in a fixed zone. The identification device according to claim 1, wherein 3. A method for comparing data for each fixed zone obtained from a bill to be identified or the like with standard data, giving a standard pattern comparison candidate, and comparing the type and direction of a predetermined number of candidates in a plurality of fixed zones with the standard pattern. The identification device according to claim 1, wherein the identification device is specified as a candidate.