JPH062472U - Data recording card - Google Patents

Abstract

(57) [Summary] [Purpose] To protect the privacy of the cardholder. When reading the data encoded and recorded in the optical data storage area, the arithmetic unit 4 compares the identifier code stored and held in the semiconductor memory 5 with the identifier code of the external input and matches them. If it is, the encryption coded data is decrypted by the encryption code stored and held in the semiconductor memory 5. [Effect] Only a cardholder who has a known identifier code can read the data, and a third party cannot obtain the data.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a data recording card, and more particularly to an optically recorded card (hereinafter referred to as an optical card).

[0002]

[Prior art]

 As shown in FIG. 4, the conventional optical card is composed of only an optical data recording area 1 for optically recording data.

When data is recorded, a reading / recording machine (hereinafter referred to as a reader / writer) irradiates a laser beam corresponding to data “0” or “1”, and the light reflectance is different ( Hereinafter, pits) are formed, and data is recorded by the arrangement of the pits.

When reading data, it is possible to irradiate light with a reader / writer to optically check the presence or absence of pits, and read as array data of “0” or “1” corresponding to the recording of the above data.

[0005]

[Problems to be solved by the device]

 With this conventional optical card, anyone with a reader / writer can read the recorded data, so personal credit information such as the cardholder's privacy can be obtained without permission by a third party. was there.

An object of the present invention is to provide a data recording card that protects the privacy of the cardholder.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, a data recording card according to the present invention is a data recording card having an optical data recording area, a semiconductor memory, a computing unit, and a terminal in a card body. Is for optically recording data, the semiconductor memory is for recording and holding a cryptographic code for recording and reading data, and the identifier code, and the computing unit is for processing and processing data by the cryptographic code. This is used to determine the identification code, and the terminal connects the computing unit to an external device.

Further, the recording / reading encryption code and the identifier code are set differently for each card.

[0009]

[Action]

 An encryption code for recording and reading data is set, and data can be input and output by inputting this encryption code, thereby protecting the privacy of the cardholder.

[0010]

【Example】

 Next, the present invention will be described with reference to the drawings. FIG. 1 is an external view of an optical card according to an embodiment of the present invention, and FIG. 2 is a block diagram of an arithmetic processing unit of an optical card according to an embodiment of the present invention. FIG. 3 is a block diagram showing a recording / reading state of an optical card according to an embodiment of the present invention.

The configuration will be described with reference to FIGS. 1 to 3. In the figure, the card has an optical data recording area 1, an arithmetic processing section 2, and a terminal 3.

The optical data recording area 1 is made of a material whose light reflectance changes by irradiation with laser light. The arithmetic processing unit 2 is configured inside the card. The terminal 3 is internally connected to the arithmetic unit 4, and externally connected to the reader / writer 6 when the card is inserted into the reader / writer 6.

The arithmetic unit 4 is connected to the semiconductor memory 5 which records and holds the recording / reading encryption code and the identifier code, and the terminal 3.

The external input / output device 7 is connected to the reader / writer 6. The code code for reading and reading and the identifier code are different for each card and are stored in the semiconductor memory 5 in advance.

A procedure of data recording and reading of the optical card according to the embodiment of the present invention will be described with reference to FIG.

It should be noted that the cardholder inputs the identifier code into the external input / output device 7 when recording or reading data.

(For Data Recording) The reader / writer 6 takes in the identifier code from the external input / output device 7 and transfers it to the arithmetic unit 4. The arithmetic unit 4 compares the identifier code data transferred from the reader / writer 6 with the identifier code data stored and held in the semiconductor memory 5. As a result of the comparison, if the identifier codes do not match, the process is performed, and if the identifier codes match, the processes from to are performed. The computing unit 4 transfers the message data whose identifier codes do not match to the external input / output device 7 via the reader / writer 6 and prohibits the recording of the data. The reader / writer 6 takes in the data to be recorded from the external input / output device 7 and transfers the data to the arithmetic unit 4. The arithmetic unit 4 cryptographically encodes the transfer data from the reader / writer 6 with the cryptographic code stored in the semiconductor memory 5, and transfers the cryptographically encoded data to the reader / writer 6. The reader / writer 6 irradiates the data transferred from the arithmetic unit 4 to the optical data recording area 1 with laser light corresponding to either "0" or "1", forms pits in an array, and records data.

(In the case of reading data) The reader / writer 6 takes in the identifier code from the external input / output device 7 and transfers the data to the computing unit 4. The computing unit 4 compares the identifier code data transferred from the reader / writer 6 with the identifier code data stored and held in the semiconductor memory 5. As a result of the comparison, if the identifier codes do not match, the process is performed, and if the identifier codes match, the processes from to are performed. The arithmetic unit 4 transfers the message data whose identifier codes do not match to the external input / output device 7 via the reader / writer 6 and prohibits the reading of the data. The arithmetic unit 4 requests the reader / writer 6 to read data from the optical card. The reader / writer 6 reads the encrypted coded data recorded in the optical data recording area 1 and transfers the data to the arithmetic unit 4. The arithmetic unit 4 decrypts the transferred encrypted coded data by the encrypted code stored and held in the semiconductor memory 5, and transfers the decrypted data to the external input / output device 7 via the reader / writer 6.

[0019]

[Effect of device]

 As described above, the present invention provides an area for optically recording data, a semiconductor memory for storing and storing a cryptographic code and a discriminator code for recording and reading the data, and processing of the data by the cryptographic code and a discriminator. By providing a computing unit that determines the code and a terminal that connects the computing unit to the outside, only the cardholder who has a known identifier code can read the recorded data, and the third There is an effect that the person cannot obtain the data.

[Brief description of drawings]

FIG. 1 is an external view of an optical card according to an embodiment of the present invention.

FIG. 2 is a block diagram of an optical card according to an embodiment of the present invention.

FIG. 3 is a configuration diagram showing a recording / reading state of an optical card according to an embodiment of the present invention.

FIG. 4 is a diagram of a conventional example.

[Explanation of symbols]

 1 optical data recording area 2 arithmetic processing unit 3 terminal 4 arithmetic unit 5 semiconductor memory 6 reader / writer 7 external input / output device

Claims (2)

[Scope of utility model registration request] 1. A data recording card having an optical data recording area, a semiconductor memory, a computing unit, and a terminal in a card body, wherein the optical data recording area is for optically recording data, The semiconductor memory records and holds the encryption code and the identifier code for recording and reading data, the arithmetic unit determines the processing of the data by the encryption code and the identification code, and the terminal is the arithmetic unit. A data recording card, characterized in that it is connected to an external device. 2. The data recording card according to claim 1, wherein the recording / reading encryption code and the identifier code are set differently for each card.