JPH04289992A - Sheet paper processor - Google Patents

Abstract

PURPOSE:To obtain a device able to judge fast whether or not the inputted sheet paper is regular regardless of the increase of the type of the sheet paper to be the object of handling concerning a sheet paper processor to judge whether or not the inputted sheet paper is regular. CONSTITUTION:An optical sensor part 10 reads a sheet paper 60 while including the whole of an inputted sheet paper 60 into the sight, an image processing part 12 performs the coordinates transformation of the inputted sheet paper 60 and rotates and moves the sheet paper 60 to the prescribed posture, a dictionary data part 14 holds the dictionary data of the regular sheet paper classified by the type of the sheet paper and classified by the inputting direction, a dictionary comparing part 16 compares the reading data of the inputted sheet paper 60 for which the coordinates are transformed with respective dictionary data, a first comparing means 18 specifies the type and inputting direction of the inputted sheet paper 60 and a second comparing means 20 judges whether or not the inputted sheet paper 60 is a regular sheet paper.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet processing apparatus for determining whether or not an input paper sheet is legitimate.

[0002] This type of device is used in automatic machines for delivering and receiving banknotes, securities, and the like.

0003

2. Description of the Related Art A sheet of paper inserted into an apparatus is read by an optical sensor, thereby obtaining data indicating the shade of each pixel.

FIG. 6(A) shows the read data, and the sheet 60 indicated by the read data is coordinate-transformed and rotated to a predetermined posture as shown in FIG. 6(B). .

At this time, the density of the read data is also corrected, and the normalized read data is compared with the dictionary data shown in FIG.

[0006] As dictionary data, data obtained by reading all types of genuine paper sheets (genuine notes) that are subject to handling are used, and they are also classified according to the direction in which the paper sheets are inserted.
Prepared separately for front and back.

For example, when four types of paper sheets are to be handled, dictionary data for a total of 16 sheets is prepared for the input direction (2) and front and back sides (2).

[0008] Conventionally, the entire dictionary data and the entire data of the paper leaf 60 are successively compared, and as a result, it is determined whether the paper leaf 60 is genuine or not. In this case, the type of paper sheet 60, the feeding direction, etc. are also determined.

However, since the entire comparison of each dictionary data and the paper sheet 60 is performed sequentially, as the number of types of paper sheets 60 to be handled increases, it takes time to compare the dictionary data with the paper sheet 60, and the processing speed of the device decreases. decreases.

Therefore, a faster processor is selected and the processing routine for dictionary comparison is sped up.

[0011]

However, even if high-speed processors and routines are employed, it has been difficult to sufficiently increase the processing speed of the apparatus.

The present invention has been made in view of the above-mentioned conventional circumstances, and its object is to provide an apparatus that can dramatically increase processing speed.

[0013]

[Means for Solving the Problems] In order to achieve the above object, a paper sheet processing apparatus according to the present invention is constructed as shown in FIG.

[0014] In the figure, an optical sensor section 10 performs reading including the entirety of an inserted paper sheet 60 in its field of view.

The image processing unit 12 also performs coordinate transformation of the input sheet 60 indicated by the read data to convert the input sheet 60 into a
Rotate and move to a predetermined posture.

Furthermore, the dictionary data section 14 stores dictionary data indicating regular images as paper sheets (paper sheets to be handled).
It is maintained by type and feeding direction.

Then, the dictionary comparison section 16 compares the read data of the input sheet 60 whose coordinates have been converted with each dictionary data.

This dictionary comparing section 16 includes a first comparing means 18
(for partial comparison) and a second comparison means 20 (for whole comparison), and the first comparison means 18 extracts characteristic parts of regular paper sheets from each dictionary data and compares them with the corresponding parts of the read data. , the type and direction of the input sheet 60 are specified.

Further, the second comparing means 20 extracts only the dictionary data of the specified type and input direction and compares this with the read data as a whole, thereby determining whether or not the input sheet 60 is a regular sheet. to decide.

[0020]

[Operation] In the present invention, the characteristic part of each dictionary data and the corresponding part of the inserted paper leaf 60 are partially compared to determine the paper leaf 60.
The type of 0 and its feeding direction are first determined, and the dictionary data indicated by these types and feeding directions are compared with the paper sheet 60 as a whole to finally determine whether or not the fed paper sheet 60 is a regular paper sheet.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the paper sheet processing apparatus according to the present invention will be described below with reference to the drawings.

FIG. 2 illustrates the configuration of the embodiment.
When the paper sheet 60 is input into the apparatus and conveyed inside, it is detected by the paper sheet detection section 22.

The output of the paper sheet detection section 22 is given to the central processing unit 24, and the optical sensor section 26 (10) is activated by the central processing unit 22.

In the optical sensor section 26, reading of the paper sheet 60 is performed using a transmission sensor as it is conveyed, and an output obtained by sampling the read data (analog data) is obtained.

The output of the optical sensor 26 is amplified by an amplifier 28, and converted by an A/D converter 30 into digital data that expresses shading in multiple values.

[0026] This digital data is processed by the image processing section 32 (1
2), the image processing unit 32 performs processing to rotate the paper sheet 60 indicated by the data to a predetermined posture and correcting the shading (density) of the paper sheet 60 according to instructions from the central processing unit 24. It will be done.

When the processing of the image processing section 32 is completed, the dictionary comparison section 34 (16) is activated by the central processing unit 24, and the read data of the sheet 60 and the dictionary data section 36 are activated.
(14) is compared with the dictionary data in the dictionary comparison section 34.

Similar to the conventional example, the dictionary data section 36 contains a plurality of dictionary data (by type of regular paper, by feeding direction,
(prepared for front and back sides) are registered, and the judgment result obtained by comparing them with the data of the paper sheet 60 (judgment result of whether the paper sheet 60 is genuine or not, if it is genuine, The determination results (such as the type of paper sheet 60 and the feeding direction) are stored in the storage unit 38.

FIG. 3 explains the operation of this embodiment, and FIG. 4 explains the processing procedure of the dictionary comparison section 34.

When the data shown in FIG. 3(A) is input to the image processing section 32, the data of the sheet 60 is rotated and the shading is corrected as shown in FIG.
is input.

The dictionary comparison section 34 cuts out characteristic parts from all the dictionary data registered in the dictionary data section 36 and compares them with the corresponding parts of the input data (data output from the image processing section 32). Partial comparison processing (
Step 400) is performed first.

FIGS. 5(A), 5(B), and 5(C) each show an example of an area that is a characteristic part (such as a picture of a person is selected as a characteristic part) in dictionary data (regular paper sheet). The characteristic portion of each dictionary data and the corresponding portion of the input data are partially compared as shown in FIGS. 3(B) and 3(C).

When this partial comparison is performed, it is determined whether or not the characteristic part of the dictionary data matches the corresponding part of the input data (step 402). If they do not match with any of the dictionary data (and If there is a partial match with the dictionary data of , it is determined that handling of the sheet 60 should be refused (NO at step 402).

[0034] Furthermore, if the characteristic part in any of the dictionary data matches the corresponding part of the input data (step 4
02: YES), the entire dictionary data (one type and one direction, front or back) is compared with the entire input data (sheet portion) (step 404).

At this time, if the two data do not match in their entirety, a determination is made to refuse handling of the sheet 60 (NO in step 406), but if it is confirmed that both data match in their entirety, A determination is made as to whether the paper sheet 60 should be handled (YES at step 406).

Finally, the above determination results are output and stored in the storage section 38 (step 408).

As described above, in this embodiment, the dictionary data is limited to one of the parts (characteristic parts) of the regular paper sheet and the input paper sheet 60, and only the dictionary data for that one sheet and the input paper sheet 60 are compared. are compared in their entirety.

[0038] Therefore, the amount of data for dictionary comparison is limited to a small amount, which makes it possible to significantly increase the processing speed of dictionary comparison.

Incidentally, it has been confirmed that the processing time required for this dictionary comparison can be reduced from 1/2 to 2/3.

Moreover, since the existing routine can be used as is for dictionary comparison, it is possible to maintain the accuracy of paper leaf identification.

[0041]

[Effects of the Invention] As explained above, according to the present invention, since the amount of data when comparing dictionaries can be limited to a small amount, it is possible to determine extremely quickly whether or not the inserted paper sheet is legitimate. becomes possible.

[Brief explanation of the drawing]

FIG. 1 is a diagram explaining the principle of the invention.

FIG. 2 is an explanatory diagram of the configuration of the embodiment.

FIG. 3 is an explanatory diagram of the operation of the embodiment.

FIG. 4 is a flowchart explaining the operation of the embodiment.

FIG. 5 is an explanatory diagram of characteristic parts of a paper sheet.

FIG. 6 is an explanatory diagram of the prior art.

[Explanation of symbols]

10 Optical sensor section 12 Image processing section 14 Dictionary data section 16 Dictionary comparison section 18 First comparison means 20 Second comparison means 22 Paper sheet detection section 24 Central processing unit 26 Optical sensor section 28 Amplification section 30 A/D conversion section 32 Image processing section 34 Dictionary comparison section 36 Dictionary data section 38 Memory section 60 paper leaf

Claims (1)

[Claims] 1. An optical sensor unit (10) that reads the entire inserted paper sheet (60) in its field of view, and performs coordinate transformation of the input paper sheet (60) indicated by the read data to detect the paper sheet. (60) to a predetermined posture, and a dictionary data section (12) that holds dictionary data indicating regular paper sheets for each type of paper sheet and feeding direction.
4), and a dictionary comparison unit (16) that compares the reading data of the input sheet (60) whose coordinates have been transformed with each dictionary data;
The dictionary comparison unit (16) identifies the type and feeding direction of the input paper sheet (60) by extracting characteristic parts of regular paper sheets from each dictionary data and comparing them with the corresponding parts of the read data. 1 Comparison means (18) retrieves only the dictionary data of the specified type and input direction and compares the entire data with the entire read data to determine whether the input paper sheet (60) is a regular paper sheet. A paper sheet processing device comprising: second comparison means (20) for determining whether