JPS6344259A - Checking system for loading memory card - Google Patents

Abstract

PURPOSE:To inexpensively and surely check the abnormality in a memory card, by deciding identity between a specific pattern written in the memory card and a pattern which reads out the memory card, by a central processing unit. CONSTITUTION:The memory card 2 is loaded on a memory card read/write device. The central processing unit 1 writes the specific pattern on a specific address in the memory card 2 through a bus 3. Following that, by reading out the pattern from the specific address, and deciding whether the pattern is the same as the specific pattern, by the central processing unit 1, the check of the loading of the memory card 2, and the check of the abnormality in the inside of the memory card, can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a memory card installation check system for checking the installation state of a memory card installed in a memory card read/write device.

[Conventional technology]

FIG. 3 is a schematic side view showing a conventional memory card attachment check system disclosed in, for example, Japanese Unexamined Patent Publication No. 60-95783. In the figure, 2 is a memory card, 4 is an optical sensor, and 5 is a read/write device This is a mounting adapter for the memory card 2 provided inside.

Next, the operation will be explained.

When the memory card 2 is attached to the attachment adapter 5, the optical sensor 4 optically detects the attachment of the memory card 2,
Based on the output of the optical sensor 4, it is checked whether the memory card 2 is installed in a usable state.

[Problem that the invention seeks to solve]

Since the conventional memory card attachment check system is configured as described above, it is necessary to install the optical sensor 4 and related hardware to check the memory card attachment, which avoids an increase in costs. In addition, there were problems such as the inability to check for abnormalities inside the memory card.

This invention was made to solve the above-mentioned problems, and it is possible to check the installation status of a memory card and check for abnormalities inside the memory card without using special hardware for checking the installation. The object of the present invention is to obtain a memory card installation check system.

[Means for solving problems]

The memory card installation check system according to the present invention has a central processing unit write a specific pattern at a specific address of a memory card that is removably inserted into a memory card read/write device, and writes the specific pattern and the specific address. Determine the identity with the pattern read from
If the result of this judgment is that they are identical, the same writing, reading and judgment as above is further performed for other patterns different from the above, and the data is transferred between the central processing unit and the memory card via the bus. Information including the above-mentioned specific pattern is transmitted.

[For production]

The central processing unit in the present invention successively determines whether or not two or more specific patterns written to a specific address of the memory card are identical to patterns corresponding to each of the specific patterns read from the specific address. By determining the identity of all of these specific patterns and the read patterns, it functions to check the mounting state of the memory card and to check for abnormalities inside the memory card.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a central processing unit provided in a memory card reading/writing device, 2 is a memory card that is removably attached to the reading/writing device, and 3 is information exchanged between the central processing unit and the memory card 2. It is a bus that transmits data.

Next, the operation of this embodiment will be explained with reference to the flowchart shown in FIG.

First, the memory card 2 is installed in the memory card reading/writing device. Therefore, the central processing unit 1 sends a specific pattern XW to a specific address A in the memory card 1 via the bus 3.
Write i (step Is), then read pattern xrl from this specific address A (step 2S)
. Next, it is determined whether this pattern Xr is the same as the specific pattern XWI (step 3S), and if it is determined that they are the same, another specific pattern xy is written again at the specific address A ( Step 4S), followed by
Pattern xr from this specific address A! (Step 5S). Here, this read pattern xr!
It is determined whether or not the specific pattern XW2 and the specific pattern XW2 are the same (Step 6S), and if it is determined that they are the same, the process moves to the next process, such as exchanging other information.

Note that in step 3S and step 6S, XW1=
When it is determined that it is not Xrl and when it is determined that XW, = x□, the processing from step IS is repeated.

In this way, the central processing unit 1 operates to check whether or not a memory card is inserted and whether or not there is any abnormality inside the memory card through a series of processes such as this.

〔Effect of the invention〕

As described above, 1.According to the present invention, since the central processing unit is configured to determine the identity of the specific pattern written to the memory card and the pattern read from the memory card, the This has the effect of being able to inexpensively and reliably check the mounting state of the memory card and check for abnormalities inside the memory card without using any other checking means.

[Brief explanation of the drawing]

FIG. 1 is a block connection diagram showing a memory card installation check system according to an embodiment of the present invention, and FIG. 2 is a flowchart showing a memory card check process.
FIG. 3 is a schematic front view showing a conventional memory card attachment check system. l is central processing unit, 2 is memory card, 3 is bus 0

Claims (1)

[Claims] A specific pattern is written to a specific address of a memory card that is removably inserted into a memory card read/write device.
The identity of this specific pattern and the pattern read from the specific address of the memory card is determined, and if this sameness exists, the same writing, reading, and determination as above is performed for other specific patterns different from the above. A memory card attachment check system comprising: a central processing unit for carrying out the process; and a bus for transmitting information including the specific pattern between the central processing unit and the memory card.