JP2534532B2 - History management method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] With respect to an expansion IC card having auxiliary storage, an object thereof is to provide a history management system capable of knowing the history of data in the auxiliary storage of the expansion IC card. In an expansion IC card that includes a processor, a memory that is directly accessed by the processor, and an auxiliary storage that is theoretically separated from the processor, when a record on the auxiliary storage is accessed, the access date and time is specified. It is a constituent requirement to write in the auxiliary storage content history section of the memory in association with the information to be stored.

[Industrial applications]

The present invention relates to a history management system capable of knowing the history of data in auxiliary storage of an IC card.

[Prior Art] FIG. 6 is a diagram showing an internal configuration of a conventional IC card.
As shown in the figure, in a conventional IC card, a CPU and memory are embedded in a plastic card.
The memory has a size of about 8 Kbytes, for example. In addition to the IC card, a laser card (having no processor inside) in which a laser memory is attached to a plastic card is known as this type of card.

[Problems to be Solved by the Invention]

It is possible to register data such as photos, voices, signatures, and fingerprints in the IC card for identity verification, but it is not possible to register these data because the conventional IC card has a small storage capacity. Therefore, the IC card is provided with auxiliary memory such as laser memory, in which photos, voice,
Although it is possible to register data such as signatures and fingerprints, it is desirable to be able to register the date and time of registration at the same time, as photos and the like change with age.

The present invention was created in view of this point,
The purpose is to provide a history management method that enables the history of data on the auxiliary storage of the IC card to be known.

[Means for solving the problem]

FIG. 1 is a principle diagram of the present invention. According to the history management method of the present invention, a record on an auxiliary memory is provided in an expansion IC card including a processor 130, a memory 140 directly accessed by the processor 130, and an auxiliary memory 120 that is logically separated from the processor 130. When the is accessed, the access date and time is associated with the information for identifying the record and written in the auxiliary storage content history section of the memory 140.

〔Example〕

FIG. 5 is a view showing the outer appearance of an expansion IC card to which the present invention is applied. In the figure, 100 is an expansion IC card and 110 is
IC chip and 120 each represent a laser memory.

The IC chip 110 is embedded in a plastic card, and the laser memory 120 is attached to the plastic card. The IC chip 110 has a CPU and a memory.

FIG. 2 is a diagram showing an internal configuration example of the expansion IC card of the present invention. In the figure, 130 is a CPU and 140 is a memory.

The CPU 130 has a program ROM, in which ICA
Contains programs for M and LICAM. ICAM is an access method for the memory 140, and LICAM is an access method for the auxiliary storage 120. The auxiliary memory 120 can be used in a block form and can be used in a format-free manner. The auxiliary memory 120 on the left side of the figure shows a state when it is divided into blocks. In the illustrated example, the block B1 of the auxiliary memory 120 is assigned to a photo, the block B2 is assigned to a voice, and the block B1 is assigned to a voice.
B4 is assigned to the signature. Each block is a record
It is composed of R1 to Rn. The memory 140 has an auxiliary storage directory section and an auxiliary storage content history section. The auxiliary storage directory portion indicates the physical position of the record on the auxiliary storage (laser memory in the illustrated case). The auxiliary storage content history section has a plurality of lines,
Block number and record number are pre-filled in each line,
When a record is accessed, the access date and time is written in the corresponding line.

FIG. 3 is a diagram showing a system configuration example. In the figure, 150 is a communication control unit, 200 is an expansion IC card reader / writer, 230 is an access unit for the laser memory 120, and 30 is an access unit.
0 is a terminal, 310 is a communication control unit, and 320 is an application program.

In the expansion IC card 100, the processing system having the CUP 130 and the memory 140 is theoretically separated from the laser memory 120. The reader / writer 200 has a contact portion (not shown) that comes into contact with the contact portion of the expansion IC card 100, and also has an access portion 230 for reading / writing the laser memory 120. Reader / Writer 200 processor
250 examines the processing request sent from the terminal side and performs processing according to the processing request.

FIG. 4 is a diagram showing a flow of read & write processing for auxiliary storage. The process in the figure is based on the expansion IC card ROM
It is programmed in the terminal, and the terminal issues read instructions and write instructions through the reader / writer.

When the read instruction and the theoretical position data are sent, the read process is started. The auxiliary storage directory is searched with the theoretical position data, the physical position data corresponding to the logical position data is obtained, the data is read from the laser memory 120 based on the physical position data, and the access date and time is written in the auxiliary storage content history part. , The read data is returned to the request source.

When the write instruction, theoretical position data, and write data are sent, the auxiliary memory directory section is searched for the logical position data, the physical position data corresponding to the logical position data is obtained, and based on the physical position data. Data is written in the laser memory 120, the access date and time is written in the auxiliary storage content history section, and the result of the writing process is notified to the request source.

〔The invention's effect〕

As is clear from the above description, according to the present invention, it is possible to know the history of the data on the auxiliary memory and to perform the proof of guarantee of the identity of the certification target that changes with the passage of time. A hologram memory or a non-volatile RAM can be used instead of the laser memory.

[Brief description of drawings]

FIG. 1 is a principle diagram of the present invention, FIG. 2 is a diagram showing an internal configuration example of an expansion IC card of the present invention, FIG. 3 is a diagram showing a system configuration example, and FIG. 4 is a read & write operation for auxiliary storage. FIG. 5 is a diagram showing a processing flow, FIG. 5 is a diagram showing an external appearance of an expansion IC card to which the present invention is applied, and FIG. 6 is a diagram showing an internal configuration of a conventional IC card. 100 ... Expansion IC card, 120 ... Laser memory, 130 ...
… CPU, 140… memory.

Claims (1)

(57) [Claims] 1. An expansion IC card comprising a processor (130), a memory (140) directly accessed by the processor (130), and an auxiliary memory (120) logically separated from the processor (130). When a record on the auxiliary storage is accessed, the access date and time is associated with the information that identifies the record, and
(0) A history management method characterized by writing in the auxiliary storage content history section.