JPH0632388Y2 - Magnetic card - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a technology for preventing forgery of a magnetic card, and more particularly to a technology for preventing forgery of data recorded in a printing section.

<Outline of the Invention> The present invention has a magnetic recording portion, a visible identification printing portion and an invisible identification printing portion on a card surface, and the card data is stored in the magnetic recording portion, the visible identification printing portion and the invisible identification printing portion. The present invention relates to a magnetic card for recording.

<Prior Art> As a conventional forgery prevention of a magnetic card, there has been proposed one in which an OCR (optical character recognition device) code is printed with visible discrimination, and one in which invisible discrimination printing with infrared rays is performed individually. There is.

<Problems to be solved by the invention> As described above, that is, if the OCR code is printed, it can be easily forged because it can be visually confirmed, and invisible identification printing by infrared rays or the like can be performed. Even if it is done, if the recording position becomes clear by the sensor position of the card reader, etc., the data can be read, so it is possible to forge even by a method that does not rely on invisible distinctive printing. Since the position of is unknown to general users, there is a problem that the data part is likely to be damaged.

<Means for Solving Problems> In order to solve the above problems, conventional anti-counterfeiting technology tends to hide the data recording position, whereas the present invention provides
The visible identification printing section is placed so as to overlap the invisible identification printing section, and the card-specific data is assigned to the visible identification printing section and the invisible identification printing section. The invisible distinctive print data of the invisible distinctive printing unit is combined into variable data unique to the card, and the variable data unique to the card is converted by a predetermined algorithm and recorded in the magnetic recording unit.

<Operation> The magnetic card configured as described above operates as follows.

The card-specific data is printed separately for visible identification printing and invisible identification printing, and since the invisible identification printing is hidden by the visible identification identification printing, the printing position of the card-specific data becomes clear and visible identification is provided. It makes the illusion that the print data is all data and hides the true data. Since the visually identifiable print data and the invisible identifiable print data are converted by a predetermined algorithm and recorded in the magnetic recording unit, the card-specific data can be changed for each card, and forgery of magnetic data can be prevented.

<Embodiment> An embodiment of the magnetic card of the present invention will be described below with reference to FIGS.

First, referring to FIGS. 3 to 5, card-specific data 5
A method of printing and recording on the magnetic card 1 will be described.

In the present invention, as shown in FIG. 3, card-specific data 5 is modulated into a card-specific variable data 6 by a method such as the F2F method, and the card-specific variable data 6 is then visually identified by the first algorithm. Visible print data 7 and invisible distinguishable print data 8 are divided, and print patterns of the visible distinguishable print pattern 7a and the invisible distinguishable print pattern 8a corresponding to the high level of the waveform of the two divided print data are created respectively. Printing is performed on the visible discrimination printing section 3 and the invisible discrimination printing section 4 as shown in FIG.

The F2F method is one of the FM modulation methods. When recording a signal on a magnetic medium, for example, the frequency when the signal is "0" is "F" and the frequency when the signal is "1" is the second. This is a system in which the input digital signal is replaced with an F · 2F signal as a multiple (2F).

An example of the printing structure of the magnetic card 1 according to the present invention will be described with reference to FIG.

First, an invisible distinctive printing pattern 8a (not shown) is printed on the indistinct distinctive printing part 4 using infrared reflecting ink on the base material 18, and a concealing layer capable of transmitting only invisible rays such as infrared rays thereon. Print 19. Next, a visible distinguishing print pattern 7a (not shown) is printed on the visible distinguishing print portion 3 on the concealing layer 19 using a visible ink, and a protective layer 17 is provided to protect the printed matter. is there.

With the above printing structure, the invisible distinctive printing pattern 8a is printed on the visible distinctive printing pattern 7a, so that the invisible distinctive printing pattern 8a is visually hidden by the visible distinctive printing pattern 7a. It will be done. Further, it is appropriate that the visible discrimination printing 3 and the invisible discrimination printing section 4 are arranged in a staggered manner as shown in FIG.

Next, the card-specific data 5 printed and recorded on the magnetic card 1
A method of magnetically recording the data on the magnetic recording unit 2 will be described with reference to FIG.

In FIG. 1, the contents of the visible distinctive print data 7 printed on the visible distinctive printing unit 3 and the invisible distinctive print data 8 printed on the invisible distinctive printing unit 4 are both recorded by a photo sensor (not shown). It is read and combined according to the first algorithm, and becomes the variable data 6 unique to the card. The card-specific variable data 6 is calculated by the arithmetic unit 12 according to the numerical value generated by the conversion data generator 10 inside the converter 9.
Is calculated to obtain converted data 13. Conversion data 1
The data 3 is magnetically recorded in the magnetic recording unit 2 together with the normal data 14. At the time of magnetic recording, the conversion data 13 and the normal data 14 may be scrambled to prevent forgery.

A method of authenticity determination when the magnetic card 1 is placed on a card reader will be described with reference to FIG.

In FIG. 2, the contents of the visible distinctive print data 7 printed on the visible distinctive printing unit 3 and the invisible distinctive print data 8 printed on the invisible distinctive printing unit 4 are both read by the photosensor. The variable data 6 unique to the card is synthesized according to the above algorithm. At the same time, the data magnetically recorded in the magnetic recording unit 2 is separated by the data extracting circuit 15 into normal data 14 and converted data 13. The conversion data 13 is operated by the operation unit 12 according to the numerical value generated by the conversion data generator 10, and the resulting data is compared with the variable data 6 unique to the card by the comparator 16, and the comparison result indicates the true of the card. False is determined.
It is desirable to make the card-specific data 5 as complicated as possible from the viewpoint of forgery prevention. If the recording of the magnetic card is composed of only the magnetic recording section 2, the card-specific data 5 and the normal data 1
Even if 4 is scrambled or coded, it is useless for full-scale copying of magnetic data, and in order to prevent forgery, it is effective to use both magnetic recording and print recording. Among them, the visible identification printing which is the present invention. The combined use of the data 7 and the invisible distinctive print data 8 is more effective.

<Effects of the Invention> As described above, the magnetic card of the present invention divides the data into the visible discrimination printing section and the invisible discrimination printing section, and separates the visible discrimination printing section and the invisible discrimination printing section from the card surface. Since the print position can be checked by arranging them in the same area in a mixed manner, it is possible to call attention to stains on the print section, and because part of the data can be visually observed, the illusion that this visual data is all It is possible to conceal the true data and prevent forgery. Also, it is effective for forgery such as copying of magnetic data by increasing the types of card-specific data and having a predetermined algorithm with magnetic data. Can be prevented.

[Brief description of drawings]

FIG. 1 is a block diagram of magnetic recording in the magnetic card of the present invention, FIG. 2 is a block diagram of authenticity determination of the magnetic card in the magnetic card of the present invention, and FIG. 3 is print data and printing in the magnetic card of the present invention. Explanatory drawing for explaining the creation of the pattern, FIG. 4 is a plan view of the magnetic card of the present invention,
FIG. 5 is an explanatory view of an example of the printing structure of the magnetic card of the present invention. In the drawings, 1 is a magnetic card, 2 is a magnetic recording section, 3 is a visible identification printing section, 4 is an invisible identification printing section, 5 is card unique data, 6 is card unique variable data, and 7 is visible identification printing. Data, 7a is a visible discriminating print pattern, 8 is an invisible discriminating print data, 8a is an invisible discriminating print pattern, 9 is a converter, 10 is a converted data generator, 11 is a combining circuit, 12 is a calculator, 13 is Conversion data, 14 normal data, 15 data extraction circuit, 16 comparator, 17
Is a protective layer, 18 is a base material, and 19 is a hiding layer.

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Claims (1)

[Scope of utility model registration request] 1. A magnetic card having a magnetic recording section, a visible discrimination printing section and an invisible discrimination printing section on a card surface, and recording card unique data in the visible discrimination printing section and the invisible discrimination printing section, wherein: One of the two pieces of print data obtained by dividing the card-specific data is used as a visible identification print pattern, and the other is used as an invisible identification print pattern, and the visible identification print pattern and the invisible identification print pattern are the same on the card surface. A magnetic card characterized by being arranged in a mixed manner without overlapping in the area.