JPS6293753A - Card and card truth discriminating device - Google Patents

Abstract

PURPOSE:To discriminate correctly the truth even if a data in a card is copied, by reading the area of the prescribed color of the surface of the card, comparing the read area, with a prescribed reference area, and discriminating the truth of the card. CONSTITUTION:When the tip of an IC card 10 reaches the switch 21a of a color read part 20, a reading circuit 24 is started, and the reading circuit 24 reads the red printed component of the surface of the IC card 10 through a filter 22 and a sensor 23. This read is executed until the rear end of the IC card 10 reaches a switch 21b. The read red printed component is A/D-converted, and thereafter, binary-coded so as to become '1' and '0', when red is strong, and when it is weak, at every picture element by a threshold circuit 26, this binary-coded signal is counted by a counter 27, and this counted value becomes the total area of a red printed part 11 and 12a on the card 10. When the read red area is within + or -5% of the red reference area, it is discriminated to be 'true', and if it exceeds + or -5%, it is discriminated to be 'false'.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a card and a card authenticity determination device.

<Summary of the Invention> The present invention completely determines the authenticity of the card by comparing a predetermined area of a predetermined color on the surface of the card with a reference value.

<Prior art> Generally, transaction processing cards such as magnetic cards, IC cards (cards with built-in integrated circuits), and laser cards used in bank automatic teller machines, etc. have a code such as a recited number in addition to a transaction processing code. ID information is stored.

Conventionally, a card authenticity determination device in such an automatic payment machine or the like compares ID information read from the card with ID information input from a numeric keypad or the like to determine the authenticity of the card.

<Problems to be Solved by the Invention> However, in such a card authenticity determination method, especially in the case of IC cards, if the interface is standardized, an abuser will be able to access his own or another person's transaction processing code or
There is a risk that the card may be copied by reading the D information. In this case, there is a point where the discriminating device determines that the duplicated card is "authentic" if correct ID information is input at the time of transaction.

SUMMARY OF THE INVENTION In view of the problems of the prior art described above, it is an object of the present invention to provide a device that can determine the authenticity of a duplicate transaction processing card.

Means to solve problems〉 Hon f! In order to solve the above-mentioned problem, the method A is characterized in that an area of a predetermined color on the surface of the card is taken, and the read area is compared with a predetermined reference area to determine whether the card is genuine or false.

Effects> With the above configuration, the present invention allows the user to use the
Embodiments that can prevent fraud The present invention will be described in detail below with reference to the drawings. FIG. 1 is a plan view showing an embodiment of an IC card 10 according to the present invention, FIG. 2 is a block diagram of a color reading section 20 of a transaction processing device in which the IC card 10 of FIG. 1 is used, and FIG. FIG. 2 is a block diagram of the electrical system of the IC card 10. FIG. In this embodiment, authenticity is determined based on the area of the red portion printed on the card 10, and the authenticity determination is performed on the card 10 side.

In FIG. 1, on the card 10, for example, the company name logo rABCCARDJ 1 which displays all card companies is printed in red, and logo marks rAJ 12a, rBJ1
2b, "C"] 2c are printed in red, blue, and green, respectively. [Symbol] 3 is an emboss indicating the member number and member name.

The card 10 further has an IC 14 built-in.
As shown in Fig.
OM) 17 (the power supply line is not shown). The read gate 15 of the card 10 is connected to a contact section 18 provided on the card 10. memory 17
A red reference area for determining the authenticity of card ]0 is stored in .

$2 In the figure, the color reading unit 20 of the card processing device includes a transport mechanism (not shown) that transports the card 10 in the direction shown by the arrow in the figure (sub-scanning direction), and switches 21a and 21b that detect the transported card 10. , a filter 22 such as an interference filter that transmits only red light, and a one-dimensional COD image sensor 23 extending in a direction perpendicular to the drawing (main running direction).
A circuit 24 that reads the output from the sensor 23 and a reading circuit 2
A/D converter 25 that converts all analog signals from 4 to digital.
, a threshold circuit 26, a counter 27, and a contact section 28 that connects with the contact section 18 of the IC card 10 (7).

The operation of the embodiment according to the above configuration will first be described with reference to FIG. The IC card 1 is connected to the switch 21a of the color reading section 20.
When the leading edge of 0 is reached, the reading circuit 24 starts, and the reading circuit 2
4 is an IC card via a filter 22 and a sensor 23]
Read the red printed component on the surface of 0. This reading is
This is continued until the rear end of the card NOO reaches the switch 21b.

After the read red printing component is A/D converted,
If the value circuit 26 indicates that each pixel has a strong red color, "]"
, if it is weak, it is binarized as "0", and this two
The converted signals are counted by a counter 27.

That is, this counted value becomes the total area of the red printing Bll and 12a on the card 10. IC card 10
(Particularly the contact portion 18) stops when it reaches the contact portion 28 of the color reading section 20. At this time, the contact section 18 of the card 0 is connected to the contact section 28 of the color reading section 20.

The operation of the IC card 10 will be explained with reference to FIG.
The CPU 16 reads the contents of the counter 27 of the color reading section 20 (the area of the red printed section 1 and 12a on the front surface of the card 10) through the contact section 1B and the output gate 15, and reads the memo I7.
Compare with the red reference area in 17.

For example, the read red area is ±5 of the red reference area.
If it is within ±5%, it is determined to be “true,” and if it is over ±5%, it is determined to be “false.” In the case of "false", the CPU]6 operates not to perform processing with the transaction processing device on the color reading unit 20 side, or issues a command to the transaction processing device side to collect the card]0. You can do it like this. If "true", normal transaction processing is performed.

In this embodiment, since the authenticity is determined on the IC card 10 side,
This has the effect that the reference area is not output to the outside of the card 10, so that the secret is protected. It is also safer to scramble the total amount of a specific color and store it on the card.

In the above embodiment, color reading is performed using the filter 22 and the CCD.
Although this is done using a 23K image sensor, a color camera may be used instead to set the brightness for each RGBE primary color and measure the total amount (color area) of a specific color.

Further, it goes without saying that the authenticity determination based on the area of a predetermined color can be performed on the card transaction processing device side, and in this case, it can be applied not only to IC cards but also to magnetic cards and laser cards.

<Effects of the Invention> As explained above, in the present invention, the authenticity is determined based on the area (summation) of a predetermined color on the card, so even if the data on the card is duplicated, the authenticity can be determined correctly. It becomes possible.

[Brief explanation of drawings]

1 is a plan view of an IC card according to the present invention, FIG. 2 is a block diagram of a color reading section of a card transaction processing device, and FIG. 3 is a block diagram of an electrical system of the IC card of FIG. 1. 10-IC card,] 1-...Company name logo, 12a,
]2b. 12e...Logo mark, 16...Central processing unit (C
PU), ]7...Memory, 23...COD image sensor, 24...Reading circuit.

Claims (1)

[Claims] (1) A means for storing a reference area of a predetermined color, and determining the authenticity of the card by comparing the area of the predetermined color on the surface of the card read by the card transaction device with the reference area of the storage means. A card that has the means to (2) means for reading the area of a predetermined color on the surface of the card, means for storing the reference area of the color, and comparing the area of the card read by the reading means with the reference area of the storage means; A card authenticity determination device having means for determining authenticity of a card.