JP3012424U - Prepaid card read / write device with decryption abnormality detection function - Google Patents

Abstract

(57) [Summary] [Object] To provide a prepaid card reading / writing device with an abnormality detection function at the time of decoding for detecting and notifying when the balance of an abnormal value exceeding a predetermined limit is restored. A microcomputer 2 including a reading mechanism 5 for reading data from a prepaid card P, a writing mechanism 6 for writing updated data to the prepaid card, a memory 3, and operating based on a procedure stored in the memory 3 is provided. A control means 4 which is built in and controls the operation of each part of the device in the memory 3, a decoding procedure 13 for decoding the balance based on the data read by the reading mechanism 5, and an anomaly in which the decoded balance exceeds a predetermined limit amount. Decoding abnormality detecting means 12 for detecting the case of a value
Store and configure.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a prepaid card read / write device, and in particular, when a balance is decrypted from data read from the surface of a prepaid card on which a dark color mark is displayed, an abnormal value exceeding a predetermined limit amount is detected. The present invention relates to a prepaid card reading / writing device with a detection function.

[0002]

[Prior art]

 Recently, magnetic cards have become popular as prepaid cards. It has a certain feature in that it records a large amount of data and keeps the confidentiality of the data. However, since a magnetic card normally writes data to a magnetic stripe attached to a resin and then reads it magnetically, it is extremely easy to tamper with data by a magnetic writer and thus make it illegal. As you know, it is causing the problem of.

Therefore, mainly for the purpose of data tampering and fraud prevention, the balance is printed and displayed as a binary data on the surface of a card made of paper or plastic with a dark color mark, and the display is updated every time the balance is updated. Pre-paid cards with configurations have come to be used. With such a prepaid card, a balance display consisting of a series of dark-colored marks is added and printed side by side with the old balance display for each transaction.

As a prepaid card reading / writing device for reading and writing such a prepaid card, a reading mechanism for optically reading a series of dark color marks printed on the surface of the inserted prepaid card, and a reading device for reading. The control means that detects the current balance of the prepaid card from the signal, calculates the update balance after adjusting the transaction amount from this balance, and the old balance on the surface of the prepaid card as a series of dark marks. And a writing mechanism such as a printer that prints additionally on the side by side.

[0005]

[Problems to be solved by the device]

 By the way, generally, in order to secure the confidentiality of the balance data written on the prepaid card and enhance the reliability, the balance data may be encrypted and written to the prepaid card. The data thus encrypted is decrypted after being read, and the balance data is obtained. However, at the time of such decryption, due to an error during decryption processing, a read error of the prepaid card, a recording error when previously recorded on the prepaid card, or the insertion of an illegal card, etc. Outlier balance may exceed the limit. However, in the prepaid card reading / writing device having the above-described conventional configuration in which no special countermeasure is taken, even if an abnormality occurs in the decryption balance, it cannot be detected, and therefore, it is effective. Could not be excluded.

The present invention has been made in order to solve the problem of the prior art, and its purpose is to detect and notify a decoding abnormality when there is an abnormality in the decoding balance. It is to provide a prepaid card reading / writing device with a function.

[0007]

[Means for Solving the Problems]

 The prepaid card read / write device with a decryption abnormality detection function of the present invention is provided with a read mechanism for reading data from the prepaid card, a write mechanism for writing updated data to the prepaid card, and a memory, and is stored in the memory. In a prepaid card reading / writing device in which a microcomputer that operates according to a procedure is built in, and control means for controlling the operation of each part of the device is stored in the memory, and the microcomputer executes at least the control means, The decryption procedure for decrypting the balance based on the data read by the readout mechanism and the decryption abnormality detecting means for detecting a case where the decrypted balance has an abnormal value exceeding a predetermined limit amount are implemented in the microcomputer. It is characterized in that it is provided in the memory as a line procedure.

[0008]

In the prepaid card read / write device with the decryption abnormality detection function of the present invention configured as described above, decryption is performed by the decryption procedure every time the reading mechanism reads the data, and the balance data is read. When it is restored, the decryption anomaly detection means operates to check whether the balance data restored by the decryption procedure is an abnormal value that exceeds the prescribed limit amount, and if an abnormal value that exceeds the prescribed limit amount is detected. Will inform you of this.

[0009]

【Example】

 FIG. 1 is a block diagram of an embodiment of a prepaid card reading / writing device with a decoding abnormality detecting function of the present invention. FIG. 2 is a plan view of a prepaid card loaded in the prepaid card reading / writing device of FIG. Referring to FIG. 1, a prepaid card reading / writing device 1 with a decoding abnormality detecting function of the present invention comprises a microcomputer 2 for controlling the entire device and a series of dark marks printed on the surface of an inserted prepaid card P. A reading mechanism 5 for reading, a writing mechanism 6 for additionally writing the updated balance as a series of dark marks on the old balance on the surface of the prepaid card P, accessed by the microcomputer 2, and operating programs of the microcomputer 2 and A memory 3 for storing and storing data, and a power supply circuit 9 connected to the power supply line S to supply power to each part of the apparatus are provided.

Further, in the memory 3, a control means 4 executed by the microcomputer 2 is stored. Based on the current balance of the inserted prepaid card P, which is decoded from the signal read by the reading mechanism 5, the control means 4 subtracts the transaction amount from this balance and pays for it, thereby calculating the update balance. It has a control procedure for the operation of each part of the device. Further, in the memory 3, when the decoding procedure 13 for decoding the current balance from the signal read by the reading mechanism 5 and the balance data restored by the decoding procedure 13 are abnormal values exceeding a predetermined limit amount, A decoding abnormality detecting means 12 for notifying is provided.

The microcomputer 2 further drives the alarm 10 and the display 11 connected to the prepaid card reading / writing device 1 as necessary when executing the procedure. The alarm 10 is composed of a buzzer or the like, and the display 11 is composed of a warning lamp or the like.

As shown in FIG. 2, the prepaid card P loaded in the prepaid card reading / writing device 1 with the decryption abnormality detection function is a paper or plastic card whose surface has an encrypted balance. Is printed and displayed with a dark color mark D as the binary data, and the balance is additionally printed and displayed each time the balance is updated. Therefore, the reading mechanism 5 preferably has an optical configuration that sends light to the card surface and reads it based on the intensity of the reflected light or the transmitted light from the dark color mark D. The writing mechanism 6 is preferably composed of a printing mechanism such as an inkjet printer.

Next, the operation of the prepaid card reading / writing device 1 with the above-described decryption abnormality detection function will be described. First, when the prepaid card P is loaded on the reading mechanism 5 at the time of transaction settlement, the reading mechanism 5 reads the latest recorded data on the card surface. This recorded data is encrypted. When the reading is completed, the microcomputer 2 activates the decryption procedure 13, and the decryption procedure 13 restores the balance data. Then, the microcomputer 2 operates the decoding abnormality detecting means 12. The decryption abnormality detecting means 12 confirms whether or not the balance data restored by the decryption procedure 13 is an abnormal value exceeding a predetermined limit amount, and in the case of detecting an abnormal value exceeding the predetermined limit amount, the microcomputer 2 This is notified by the alarm 10 and the display 11 via the.

[0014]

[Effect of device]

 As described above, the prepaid card read / write device with the decryption abnormality detection function of the present invention has a predetermined decryption procedure for decrypting the data read by the readout mechanism and balance data in which the decryption procedure is restored. It is configured with a decryption abnormality detection means that confirms whether or not an abnormal value exceeds the limit amount and informs the abnormal value if it exceeds the predetermined limit amount. It is possible to detect and thus build a reliable prepaid card system.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of a prepaid card reading / writing device with a decryption abnormality detection function of the present invention.

FIG. 2 is a plan view of a prepaid card loaded in the prepaid card reading / writing device with the decryption abnormality detection function of FIG.

[Explanation of symbols]

1 Prepaid Card Reading / Writing Device with Decoding Abnormality Detection Function 2 Microcomputer 3 Memory 4 Control Means 5 Reading Mechanism 6 Writing Mechanism 8 Card Ejection Port 9 Power Circuit 10 Alarm 11 Display 12 Decoding Abnormality Detection Means 13 Decoding Procedure P Prepaid card D Dark color mark S Power line

Claims (1)

[Scope of utility model registration request] 1. A reading mechanism for reading data from a prepaid card, a writing mechanism for writing updated data to the prepaid card, a memory, and a built-in microcomputer which operates based on a procedure stored in the memory. Further, in the prepaid card reading / writing apparatus in which the memory stores control means for controlling the operation of each part of the apparatus, and the microcomputer executes at least the control means, the decoding for decoding the balance based on the data read by the reading mechanism. And a decryption abnormality detecting means for detecting a case where the decrypted balance has an abnormal value exceeding a predetermined limit amount,
A prepaid card reading / writing device with a decryption abnormality detection function, characterized in that the execution procedure of the microcomputer is provided in the memory.