JPS58223891A - Inspecter for sheets and cards - 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 The present invention is applicable to paper sheets including securities such as checks and bills, and banknotes, as well as in transaction processing devices installed in financial industries for processing deposits and withdrawals, and for use by persons with transaction qualifications. This invention relates to an inspection device for cards with personal codes recorded thereon and other cards used in credit transactions.

Since these types of paper sheets and cards are mainly used to guarantee credit, their authenticity must be strictly checked.

An object of the present invention is to provide an inspection device that can reliably determine the authenticity of paper sheets and cards.

The inspection device for paper sheets and cards according to the present invention includes a means for reading and identifying a predetermined pattern on the paper sheet and cards, a means for reading data regarding the predetermined pattern recorded in advance on the paper sheet and cards, and a means for reading and identifying a predetermined pattern on the paper sheet and cards. It is characterized by comprising means for comparing pattern identification data with read data regarding a predetermined pattern.

The predetermined pattern on a paper leaf or card is typically an optically magnified image pattern on the surface determined by the material of the paper leaf or card.

When you magnify the surface of a paper leaf or card, the magnified image differs depending on the material, and each material has its own unique pattern.

The material pattern is imaged by a camera with a close-up lens. The camera here is a general term for all image sensors such as photoelectric element arrays, television cameras, and others.

The data related to this predetermined pattern includes the read pattern data itself, level discrimination data obtained by level discrimination processing of the read one pattern data, etc. In any case, this predetermined pattern is specified and identified. It's fine as long as it's possible. To record such data regarding a specified pattern on paper sheets, cards, etc., perforations, optically readable records such as bar codes, recording using ink containing magnetic material, or affixing magnetic stripes to the recording medium can be used. This includes magnetically readable records such as those that can be written on.

According to the inspection device of the present invention, the identification data of a predetermined pattern on a sheet of paper or card is collated with the data regarding the predetermined pattern recorded on the predetermined sheet of paper or card, and both of these data are Only if there is a correspondence relationship, the paper leaf or card is determined to be true. A predetermined pattern, such as the surface of a paper leaf or card as described above.
.

The optically magnified images of images differ depending on the material, so even if they are extremely elaborately forged, if they are made of a different material (for example, paper), it will be immediately obvious that they are fakes. .

Paper sheets and cards applicable to the inspection device of this invention include:
Since data regarding a given pattern is recorded,
Since the data regarding this predetermined pattern must also be accurately imitated, it is extremely difficult to forge paper sheets, cards, etc., and forgery can be prevented.

In particular, in most cases it is completely unknown what the data on a given document is about or in what format it is recorded, so it is nearly impossible to forge paper sheets or cards.

A device for producing paper sheets and cards includes a device for reading a predetermined pattern on paper sheets and cards, a means for creating predetermined data from a read signal of this pattern, and a device for reading a predetermined pattern on paper sheets and cards. and means for recording.

Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 and 2, an object to be inspected (sheet of paper, card, etc.) (P) is transported to the position of a positioning member (1) by a transport device (not shown). The positioning member (1) is provided with number guides (2) on both sides and at the leading end in the transport direction, and the object to be inspected (G) is accurately positioned by these guides (2). There is a window (3) on the bottom of the positioning member (1).
are opened at two locations, and when the member to be inspected (P) is positioned, the locations to be inspected (QA) (QB) will exactly face this window (3). In this embodiment, two locations are set to be inspected to ensure accuracy, but of course one location may be used. A magnetic stripe (S) is affixed to the object to be inspected (P), and the area to be inspected (QA) is attached here.
)(QB) data is magnetically recorded.

In this example, the inspection points (QA) (QB) are imaged by a camera, and data for a large number of sample points within each armor point (QA) (QB) is obtained. These data are discriminated by two reference levels, an upper limit and a lower limit, and the number of data at a level between these two levels is counted. Then, it is checked whether the counted data number is within a predetermined tolerance range. The lower limit of the standard for level discrimination of the data of the inspection area (QA)", l, z <
k @ + h P h L A”・1”′・glf@
Ii! 12 [1 (D upper and lower limits are CAI and CA2, respectively)
shall be. In addition, LB2 discriminates the level of the data of the inspection point (QB), and CBI and CB define the upper and lower limits of the tolerance range, respectively.
Set it to 2. These data are determined at the time of creating the inspection object, and are used as magnetic stripe (data) to form the pattern.
S).

Slightly above the positioning member (2) is the positioned object to be inspected. ) is used to read the data recorded on the magnetic stripe (S) of the area to be inspected (QA).
) (QB) camera fill (21+
and illuminating lights (5) are respectively arranged. The camera fill Ca1l includes a photoelectric element array composed of a large number of photoelectric elements arranged as described above, a television, and a photoelectric element array.
An image sensor such as a camera is used to take an optically enlarged image of the surface of the object to be inspected (P), and a close-up lens is provided on the imaging surface. The video signal passes through an intensifier (+21 (221),
After each A/D converter (131 (23+) converts it into a digital signal, the central processing unit (hereinafter abbreviated as CPU)
(Read into 101. Also, these cameras (III
The scanning of (21+) is controlled by scan pulses (CPA) and (CPB) from a scan control circuit 05 which operates based on commands from the CPU [10]. The camera fill 1211 may scan only in the horizontal direction, or may scan in the vertical direction as well. The read signal of the magnetic head (4) is also input to the CPU (101).

The CPU (Iα) is equipped with a memory (2) that stores its control program and necessary data. , an area used as a counter (C) for counting the number of level data between the upper and lower reference levels, and a counter (C) for counting the number of level-discriminated data.
There is an area used as CS) and an area in which the number of data to be level discriminated (C8O) is stored in advance.

FIG. 3 shows the procedure for determining authenticity by CPUQl. First, data on the magnetic stripe (5) is read by the magnetic reading head (4) (step +311).
, are stored in the area (goods) of memory (step (2)). Subsequently, the counter (C) (CS) is cleared (step (331)), a scanning pulse (CPA) is output (step (goods)), and the pattern data (DA) of a certain point in the inspection area (QA) is ) is read (step 051).

Then, this data (DA) is compared with the standard lower limit level fivLA1, LA2 stored in Elijah (goods) (step +3 [11 (37)), and if it is between the two levels, it is set in the counter (C). +1 (step +381
). Regardless of the result of level discrimination, when this discrimination process is completed, the counter (CS) is incremented by 1 (step 09).
, if the count value of this counter (CS) has not reached (C8O), the process returns to step (341), the next pattern data is read, and level discrimination processing of this data is performed in the same way.

When the count value of the counter (CS) reaches (C8O), the count value of the counter (C) changes to the upper and lower limits of the allowable range CA1,
It is checked whether it is between CA2 (steps +411 +421). The count value of the counter (C), that is, between the upper and lower limit levels of the reference level 4, (7
) L/'') 7 1 (') Number is ':'' Tolerance range 1
``If it is between the upper and lower limit values CAI and CA2, the location (QA
) is a pass, so the next step is to inspect the part to be inspected (QB). If the count value of the counter (C) is not within this range, the object to be inspected is immediately determined to be false (step (5+1)).

The inspection process for the inspection point (QB) is performed in step (43).
) ~ (49) ), standard upper and lower limit levels LBI, LB
2. The process is exactly the same as the above process except that the upper and lower limit values CDI and CB2 of the allowable range are used. The discrimination process in steps (461) corresponds to steps (1) to (G9). In this process as well, if the count value of the counter (C) is between the upper and lower limits CBI and CB2, the object to be inspected is finally determined to be true (step [shares])
.

In order to compensate for changes in the pattern of the inspected area (QA) (QB) over time, if the inspection results are determined to be true, each time the inspection is determined to be true, the date of creation is recorded on the magnetic stripe (S). The days are recorded and each time a certain period of time elapses, the data on the magnetic stripe (S), such as upper and lower limit values CA1, CA2, is increased or decreased by a certain method, for example, by 10%. It may be updated.

[Brief explanation of drawings]

The drawings show embodiments of the invention, with FIG. 1 being a plan view of the positioning member, and FIG. 2 being a block diagram showing the configuration of the inspection device.
FIG. 3 is a flow chart showing the inspection processing procedure. (4) See magnetic reading head, +1011111 fist CP
U, 111 +211...Camera, ■...Memory, (P)...Object to be inspected, (S)...Magnetic stripe, (QA) (QB)...Point to be inspected. that's all

Claims (1)

[Scope of Claims] Means for reading and identifying a predetermined pattern on a paper leaf or card, means for reading data regarding a predetermined pattern recorded in advance on a paper leaf or card, and identification data of the predetermined pattern and reading An inspection device for paper sheets, cards, etc., comprising means for comparing data regarding a predetermined pattern obtained.