JPH02270182A - Storage card system - Google Patents

Abstract

PURPOSE:To store data to be held, and to prevent the written data from being erased or falsified by writing the data into the DRAW type storage area of a storage card by means of a held data write means, and writing the data into an erasable/rewritable storage area by means of a control data write means. CONSTITUTION:A magnetic stripe 2 is formed on the upper surface of a storage card 1, and an optical storage area 3 is composed at a center part. The magnetic stripe 2 is the erasable/rewritable storage area, and the optical storage area 3 is the DRAW type area. Further a held data write means, which writes the held data to the DRAW type area 3 of the storage card 1, and a control data write means, which writes the control data to control the data to be held written on the DRAW type area 3 into the erasable/rewritable storage area 2, are provided. Thus the data to be held once stored into the DRAW type area 3 are not erased or falsified, and the detecting processing of an unused area is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a storage card system comprising a card into which data is written and a main device that performs processing operations using the card as a medium.

(b) Conventional technology The main devices such as automatic teller machines and door lock devices that make up the memory card system perform processing operations according to the contents stored in the memory card. Writable magnetic cards were commonly used. However, with erasable/rewritable storage guards, there is a risk that data that has been written multiple times may be erased or stored multiple times by mistake or malicious intent, making it unsuitable for storing important information. In addition, with the magnetic recording method that writes data to magnetic cards, the storage capacity per unit area is small, and when the area that can be used as a storage area is limited like a card, it is difficult to store data such as processing history. It was not possible to store the data.

Therefore, there is a card system using a write-once storage card that writes data onto the card using an optical recording method.

In this write-once type memory card, data written once cannot be erased, and data cannot be stored multiple times. Therefore, it is suitable for storing important information. Furthermore, the optical recording method has a sufficiently larger storage capacity per unit area than the magnetic recording method, and is suitable for storing data to be accumulated and saved.

(C1 Problem to be Solved by the Invention) However, in the above-mentioned write-once type storage card, new data is sequentially written to the beginning of the storable area, that is, after the area where data has already been written, and Searching for a specific area is generally performed from the beginning of the storage area, so as the amount of data stored increases,
There was a problem in that it took a long time to search for an area in which new data should be written.

The purpose of the present invention is to store data to be saved in a write-once storage area to prevent the written data from being erased or digitized, and to provide management data for managing data to be saved in an erasable/rewritable area. To provide a storage card system that can easily perform file management of stored data by storing data, and can easily perform search processing for an unused area in a write-once type storage area or a storage area for arbitrary data. It is in.

(Means for Solving Problem d1) The storage card system of the present invention includes a memory card provided with a write-once storage area and an erasable/rewritable storage area, and a write-once storage of the storage card to store saved data. a main device provided with a storage data writing means for writing into the area, and a management data writing means for writing management data for managing the storage data written in the write-once storage area into the erasable/rewritable storage area; It is characterized by being composed of.

That is, as shown in FIG. 1, saved data that is cumulatively saved is written in the write-once type storage area configured in the memory card by the saved data writing means, and stored data is written in the erase/rewrite type storage area. The management data writing means writes management data related to file management of saved data.

(e) Effect In the present invention, archival data is stored in the write-once storage area based on the management data stored in the erasable/rewritable area. Therefore, the saved data stored in the write-once type storage area is neither erased nor stored. Furthermore, searches for unused areas in the write-once storage area can be easily performed based on the management data.

Embodiment FIG. 2 is a plan view of a storage card that constitutes a part of a storage card system that is an embodiment of the present invention.

The memory card 1 is made of hard resin such as polyethylene terephthalate. A magnetic stripe 2 is formed on the upper surface of the storage card 1, and an optical storage area 3 is formed in the center. magnetic stripe 2
Data is written to the disk using a known magnetic recording method.

This magnetic stripe 2 is an erasable/rewritable storage area.

Data is written into the optical storage area 3 using a known optical recording method. This optical storage area 3 is a write-once storage area.

FIG. 3 is a block diagram of a main device forming part of the storage card system.

An optical pink-up 4 and a magnetic head 6 are provided in a card insertion section (not shown) of the main device. optical pickup 4
faces the optical recording area 3, and the magnetic head 6 faces the magnetic stripe 2. The optical pickup 4 emits a laser beam from a semiconductor laser 5 and receives reflected light from the optical recording area 3 of the laser beam. CPU
11 outputs the saved data to the recording signal processing section 13 when writing the saved data. The recording signal processing unit 13 outputs a signal to the laser driver 17 according to the stored data, and the semiconductor laser 5 is driven according to this signal.The optical pickup 4 reciprocates in a direction perpendicular to the insertion direction of the card 1. It is movable and irradiates a predetermined area of the optical recording area 3 with laser light to form a focus. In addition, when reading stored data from the optical recording area 3, the reflected light of the laser beam is detected by the pin diode 18, and the pin
The detection signal of the diode '18 passes through the amplifier 19 and the reproduction signal processing section 14, and is then sent from the I10 interface 12 to the CP.
Input to UII.

The magnetic head 6 is fixed at a position facing the magnetic stripe 2 of the inserted storage card 1, generates an electromotive force by electromagnetic induction according to the magnetically recorded content on the magnetic stripe 2, and outputs this as a read signal. This read signal is input to the reproduction signal processing unit 16 via the amplifier 21, subjected to waveform shaping, converted into a baseband signal, and input to the CPUI 1 from the I10 interface 12. Furthermore, when writing management data, the management data is output to the recording signal processing section 15, decoded by the recording signal processing section 15, and then output from the amplifier 20 to the magnetic head 6.

FIGS. 4(A) and 4(B) are memory maps of essential parts of the optical recording area of a card forming a part of the storage card system.

In the optical recording area 3, the latest stored data is always added to the beginning of the unused area. Therefore, Fig. 4 (A
) When new data is added to memory areas A to (B-1) where the latest data has been stored, as shown in (B) of the same figure, the memory areas A to (B-1) are Areas B to (C-1) are areas in which the latest data is written.

FIG. 5 is a memory map of the magnetic stripe of the storage card.

The magnetic stripe 2 is composed of a memory area MAL in which a start address A1 of the latest data is stored, and a memory area MA2 in which a start address A2 of an unused area is stored. In the case shown in FIG. 4(A), memory area M
The value of address A is stored in AL, and the value of address A is stored in memory area MA.
2 stores the value of address B. In addition, Fig. 4 (B
), the value of address B is stored in memory area MA1, and the value of address C is stored in memory area MA2.
The value of is stored.

FIGS. 6(A) and 6(B) are flowcharts showing a part of the processing procedure of the control unit of the main device forming part of the storage card system.

When reading saved data from memory card 1, the sixth
As shown in Figure (A), the latest data start address AI and unused area start address A2 stored in the memory areas MAL and MA2 are read from the magnetic stripe 2 by the magnetic heald 6 (nl). Next, data stored in addresses A1 to (A2-1) of optical recording area 3 is read out (n2) - in this way, the area from the latest data start address A1 to just before the unused area start address A2 is read out (n2). By reading the data stored in the optical recording area 3, only the latest stored data written in the optical recording area 3 can be called up.

When writing new saved data to memory card 1,
As shown in FIG. 6(B), the unused area start address A2 is read out from the memory area MA2 of the magnetic recording area 2 by the magnetic head 6 (n11). Next, storage data is written from the address position A2 of the optical recording area 3 by driving the semiconductor laser 5 (n12) - In this way, the data is written at the beginning of the unused area in FIG. B)
The latest data can be written as shown. This n
The process No. 12 is the process of the saved data writing means shown in FIG.

After this, the unused area start address A read with nil
Store the contents of 2 in memory area MAI (n 13)
. That is, the unused area start address before new storage data is written is used as the latest data start address A1 after new storage data is written. Furthermore, the value obtained by adding the range K necessary for writing the saved data to the contents of the address A2 read as nil is stored in the memory area MA2 of the magnetic stripe 2 (n14). Through this process, the unused area start address of the optical recording area 3 after new save data is written is stored in the memory area MA2, n13. n1
4 is the process of the management data writing means shown in FIG. 1, and through this process it is possible to accurately read only the latest data written in the optical recording area 3 in the state shown in FIG. 4 (B). .

(Effects of the Great Invention According to this invention, it is possible to read and write saved data to a write-once storage area based on management data written to an erasable/rewritable storage area. Saved Data is written at the beginning of the unused area of the write-once storage area, so the saved data written up to that point will not be erased or stored, and misuse of the card can be reliably prevented. Furthermore, desired saved data can be quickly read out using the management data written in the erasable/rewritable storage area, and new saved data can be quickly written into a predetermined area.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of the present invention, FIG. 2 is a plan view of a storage card forming part of a storage card system which is an embodiment of the invention, and FIG. 3 is a diagram showing a part of the storage card system. A block diagram showing the configuration of the main device, Figure 4 (A
) and (B) are both memory maps of the optical recording area configured on the same storage card, FIG. 5 is a memory map of the magnetic stripe configured on the same storage card, and FIGS. 6 (A) and (B) are the above 3 is a flowchart showing a part of the processing procedure of the main device. 1-Storage card, 2-N-strive (erasable/rewritable storage area), 3-Optical recording area (write-once storage area).

Claims (1)

[Claims] (1) A memory card having a write-once storage area and an erasable/rewritable storage area, a storage data writing means for writing saved data to be saved into the write-once storage area of the memory card, and a write-once storage 1. A storage card system comprising: a main device provided with a management data writing means for writing management data for managing saved data written in the area into an erasable/rewritable storage area;