JPH08194791A - Two-dimensional code card system - Google Patents

Abstract

PURPOSE: To provide a two-dimensional code system capable of preventing itself from being suffered from such as an illegally laminated card using the initial code area by improving the security. CONSTITUTION: A detection line determined in advance on a two-dimensional code card 1 constituted by filling ferrit magnetic powder and grain 2 at random to make the magnetic pattern of each card different from each other is scanned by a semi-coaxial resonator 4 to detect a characteristic magnetic pattern and the pattern is mode into a digital signal to be a pass word by means of an A/D conversion circuit 6. Two-dimensional code data is ciphered with the password by a coding generation circuit and written in the card 1 by a thermosensitive recording head 9. At the time of reading the card, the characteristic magnetic pattern is detected from the detection line to obtain the password and at the time of non-coincidence as the result of collation, the card is judged to be an unautorized card and its processing is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-dimensional code card system in which various commercial activities are carried out through a prepaid card in which information is written by a two-dimensional code.

[0002]

2. Description of the Related Art In a conventional card system such as a prepaid card system, a two-dimensional code card 40 is used as in the conventional card example shown in FIG. In FIG. 5, 40a is the initial amount when the ticket is issued by the ticket issuing machine,
Initial code area where information such as store number and date is written,
Reference numeral 40b is a balance code area in which progress information of the used amount is written, and 40c is a character display area. Figure 5
Information such as the initial code area 40a of the two-dimensional code card 40 shown in (A) is written by a two-dimensional graphic code called a 4-segment Carla code (registered trademark of Alec Japan). For example, as shown in FIG. 5C, the Carla code has four segments obtained by dividing a quadrangle into four as one basic code, and a black segment that is filled and marked and a white segment that is not marked are information “1”,
Various kinds of information are displayed by making them correspond to "0", and the amount of information becomes large as compared with a bar code or the like, and direct computer processing is also possible.

FIG. 6 is a schematic block diagram of a conventional system ticket issuing machine. When a bill is inserted into the ticket issuing machine as shown in FIG. 6 from the customer side, the ticket issuing machine first reads the key code of the transparent ink printed portion of the prepaid card to be issued by the optical reading sensor 5
After being read by 0, a writing head 51 composed of a heat-sensitive 7-needle head or the like is provided at a predetermined speed in a direction orthogonal to the traveling direction of the card in the initial code area 40a on the card 40 sent by the roller A. Numerical information such as Carla code is written by thermal recording in the form of reciprocal scanning. For example, when a 10,000-yen bill is inserted and the 10,000-yen button is pressed, numeric information of 10,000 yen and other information is written in the initial code area 40a of the prepaid card 40 as shown in FIG. It will be.

Prepaid card 40 for which writing has been completed
The optical reading head 52 for verification (verification) confirms the written contents of the black and white segment by the Carla code, and if there is no error, the roller B sends the card 40 to the customer.

FIG. 7 is a schematic block diagram of a card reader of a conventional system. Issued prepaid card 40
When the card is used, the card 40 is inserted into the card reader, and the amount of money is input from the charge input unit 60. The CPU 61 reads the remaining amount in the code area of the inserted prepaid card 40 with the reading head 63, and the remaining amount is sufficient. After confirming that the key code is confirmed, a command is issued to release a corresponding product (playing item, ticket, article, etc.), and at the same time, a new balance (eg, 8,000 yen) is written by the write head 62 to the balance code area of the prepaid card 40. 40b and the character display area 40c are written and sent back to the customer side.

[0006]

However, in the above-described conventional system, the confirmation of the remaining amount of the two-dimensional code card 40 and the rewriting process are performed with relative certainty, and the damage to the illegal card due to copying or the like can be prevented by the conventional magnetic system. Less scrambled than card systems, but scrambled (encrypted) information
Since the security measures for the card including the above were not sufficient, the initial code area 40a portion (amount of 10,000 yen) of the card that has been used several times as shown in FIG. ) And the balance code area 40b of another unused card with a small price and a small price, the damage caused by a simple fraudulent card that the card reader recognizes as a high-value code There is a problem that occurs.

Therefore, an object of the present invention is to improve the security of a two-dimensional code card so that a fraudulent card using the initial code area of the two-dimensional code card (the area where the card amount is stated) can be easily prevented. To provide.

[0008]

In order to achieve the above object, the present invention provides a card reading means with a two-dimensional code card in which predetermined numbers, characters and the like represented by a two-dimensional graphic code are written by the card writing means. In a two-dimensional code card system that determines the instruction content input by the user and executes the processing, a card recording paper in which ferrite magnetic powder particles are randomly encapsulated is unique to each card indicated by a detection line at a predetermined position. When a two-dimensional code card in which information is recorded using a magnetic pattern as a password is read and collated when the card is read out from the detection line at the predetermined position, the recorded information is decrypted and processing is executed.
If they do not match, it is characterized by including a card reading unit that determines that the card is a fraudulent card and stops the processing.

[0009]

According to the above construction, the two-dimensional code card uses the card recording paper in which the ferrite magnetic powder particles are randomly enclosed, and the two-dimensional code card is peculiar to the card indicated by the detection line at the predetermined position on the card recording paper. Information is recorded using the magnetic pattern as a password, and the card reading means reads the password from the detection line at the determined position and verifies it to determine whether it is an unauthorized card. Therefore, the password for actually scrambling the information and the password. The security of the card can be enhanced by providing a so-called double key, which is a key indicating the position of the detection line for storing the card.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a two-dimensional code card according to an embodiment of the present invention.

The two-dimensional code card 1 of this embodiment shown in FIG. 1 uses card recording paper (base paper) in which ferrite magnetic powder particles 2 of various sizes are randomly enclosed. The ferrite magnetic powder particles 2 in this case are large and small magnetic powder particles such as barium ferrite.

Further, a detection line 3P having a predetermined magnetic pattern is set as a position key on the card 1 in which the ferrite magnetic powder particles 2 are randomly enclosed.
The detection line 3P is a line determined by the system as a horizontal line in the X direction from the point P at the lower left of the card 1, but the detection line 3P is not particularly limited to this line.

FIG. 2 is a schematic block diagram of the ticket issuing machine for the card shown in FIG. The read head of a predetermined detection line of the card 1 is composed of a semi-coaxial resonator 4 for microwaves. When the microwave of a predetermined frequency is input and tuned, the loose coupling loop 5 scans the ferrite 2 to scan the ferrite 2. Since the microwave is attenuated and the Q of the resonator 4 is lowered in the above, the detection output shows a magnetic pattern peculiar to the card according to the arrangement state of the ferrite powder particles 2. The detected magnetic pattern of the predetermined detection line is converted into a digital pattern by the A / D conversion circuit 6, and is input to the code generation circuit 7 as a password peculiar to this card as shown in the password waveform diagram of FIG.
It becomes a key signal for scrambling the two-dimensional code data.
The scrambled two-dimensional code data is thermally recorded on the card 1 by the thermal recording head 9 to issue the card.

Next, the operation will be described. First, FIG.
As shown in the schematic drawing of the card, a large number of large and small ferrite magnetic powder grains 2 are randomly cut into a card size to form cards 1a, 1b, 1c ... Therefore, the enclosing pattern of the ferrite 2 of each card is made different.

When the card 1 is issued, for example, taking the card 1 of FIG. 1 as an example, the semi-coaxial resonator is arranged horizontally from the predetermined position indicating the position of the predetermined detection line determined by the system toward the card traveling direction. 4 scans a predetermined detection line. Microwave absorption occurs at the point where ferrite exists on a predetermined detection line, and a magnetic pattern unique to this card 1 is detected. The direction of the predetermined detection line is shown as an example different from the detection line direction shown in FIG. The detected magnetic pattern is shaped into a voltage change and is converted into a digital signal by the A / D conversion circuit 6.

For example, in the case of the card 1 shown in FIG. 1, since the magnetic pattern has three changes in output as shown in FIG. 3, the password is easily set to 3 and the code generation circuit 7
If you perform a time-based encryption with a key number of 3,
All the two-dimensional code card 8 to be recorded is scrambled by shifting three characters (for example, two-dimensional data = “A,
If C, G ", scrambled data =" D, F, J "
Etc.) After the two-dimensional code data is encrypted by the key peculiar to the card 1, the amount information and the like are written in the initial code area by the thermal recording head 9 as in the conventional example, and the two-dimensional code card 1 is issued.

Here, the password for scrambling uses the simplest form, and if the number of times is 3, the key number is 3 based on the number of changes in the output of the magnetic pattern.
As an example, three characters are shifted, five characters are shifted if the number of times is five, and two letters are shifted if the number of times is two. However, the present invention is not limited to this, and various encryption methods such as a method for adding an operation The data may be appropriately selected and used in consideration of the amount of data processed by the system and economic efficiency.

When using the card 1 thus issued, the card reader obtains a predetermined position of the card 1 from the system key indicating the position of the predetermined detection line, and the predetermined detection line is a semi-coaxial line having the same structure as the ticket issuing machine. The password 4 is scanned by the resonator 4 and the password 3 is obtained from the magnetic pattern. The password thus obtained is used to verify whether the recorded data read by the optical reading head having the same configuration as the conventional card reader can be decoded. If it is decodable, the card information is read and the designated processing is executed. If the card cannot be decoded, the card is determined to be a counterfeit card and the processing is stopped.

As described above, in this embodiment, the magnetic pattern of each card is configured to be different for each card, and the scramble password is set to be different for each card according to the magnetic pattern. The security of the can be increased, and the damage caused by illegal cards can be greatly reduced. Also, even if the password is discovered and there is a risk of forgery, you can change the password just by changing the position of the detection line, so you do not have to discard the card even if the password is discovered and you can change the password and use it as it is. There is also an advantage that you can.

[0020]

As described above, according to the two-dimensional code card system of the present invention, the information is used as the password by using the unique magnetic pattern indicated by the predetermined detection line of the card recording paper in which the ferrite magnetic powder particles are randomly enclosed. When the two-dimensional code card in which the password is recorded and the card are read, the password is read out from the predetermined detection line and collated, and if the two match, the recorded information is decrypted and the processing is executed. Since it has a card reading means for canceling, the security of the card is higher than that of the conventional magnetic card system, and there is an effect that the use of an unauthorized card including the attachment etc. can be surely prevented. .

[Brief description of drawings]

FIG. 1 is a diagram showing a two-dimensional code card according to an embodiment of the present invention.

FIG. 2 is a schematic block diagram of a ticket issuing machine for the card shown in FIG.

FIG. 3 is an explanatory diagram of a password of the card shown in FIG.

FIG. 4 is a schematic diagram of creating the card shown in FIG.

FIG. 5 is a diagram showing a conventional two-dimensional code card.

FIG. 6 is a schematic block diagram of a conventional card issuing machine.

FIG. 7 is a schematic block diagram of a conventional card reader.

[Explanation of symbols]

 1 2D code card 2 Ferrite magnetic powder 3P Detection line 4 Semi-coaxial resonator 6 A / D conversion circuit 7 Code generation circuit 8 2D code data 9 Thermal recording head

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Claims (1)

[Claims] 1. A two-dimensional code card in which predetermined numbers, characters, etc. represented by a two-dimensional graphic code are written by the card writing means is read by the card reading means, and the instruction contents inputted by the user are judged to perform the processing. In the two-dimensional code card system to be executed, a two-dimensional code card in which information is recorded by using a magnetic pattern unique to each card as a password, which is indicated by a detection line at a predetermined position on a card recording paper in which ferrite magnetic powder particles are randomly enclosed, When the card is read, the password is read from the detection line at the predetermined position and collated, and if the two match, the recorded information is decrypted and the processing is executed. If the two do not match, the card is read as a fraudulent card and the processing is stopped. A two-dimensional code card system characterized in that