JPH0612301A - Control system for file - Google Patents

Abstract

PURPOSE:To change the name of a file and its directory similarly to general files when the file is read out. CONSTITUTION:The file name of the file in a read-only memory device 2 is stored in a file in a readable/writable memory device 1 and the file which contains the file name is given a file number which is distinctive from other files. When a deciding means 6 decides that the file name of the file in the read-only memory device 2 is stored from the file number at the time of access to the file, access to the read-only memory device 2 is judged and the file name is taken out and used to access the read-only memory device 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file management system, and more particularly to a file management system in a read-only storage device.

[0002]

2. Description of the Related Art Conventionally, in a file management method using a read-only storage device, the reading of the file is registered in the read-only storage device at the time of file creation and is performed based on file management information that is not changed. It was being appreciated.

[0003]

In the above-mentioned conventional file management method, since the file name and directory position registered at the time of creation can only be read, the file name and directory position suitable for the processing mode can be read. However, there was a problem in that there was no freedom in file processing because it was not possible to set

[0004]

According to the file management method of the present invention, a unique number (file number) corresponds to a file in a readable / writable storage device, and a file stored in a read-only storage device is stored. A file having a file name is stored, and the file number of the file storing the file name of the read-only storage device is different from the file number of the file on the readable / writable storage device. File number acquisition means for acquiring the file number from the name, determination means for determining whether the corresponding file stores the file name of the file on the read-only storage device from the file number, and readable / writable storage from the file number A first file reading means for reading a file of the device; Based to the file name extraction means for extracting a file name from the file, file name removed, in which a second file reading means for reading a file read-only memory device.

[0005]

The present invention can increase the degree of freedom in file processing for handling files in a read-only storage device.

[0006]

1 is a block diagram showing an embodiment of a file management system according to the present invention. In the figure, 1 is a read / write storage device (RAM), 2 is a read-only storage device (ROM), and 3 is a read / write storage device 1 in which the file name of the read-only storage device 2 is stored. It is a stored file, and is given a file number that allows the file storing this file name to be distinguished from other files.

Reference numeral 4 denotes a file stored in the read-only storage device 2, which is a readable / writable storage device 1.
It is a file corresponding to the file name stored in. 5
Is a file number acquisition means for searching a file in the readable / writable storage device 1 by a file name and acquiring a file number from the file name.

Reference numeral 6 denotes a file stored in the readable / writable storage device 1 and a read-only storage device 2
Discriminating means for discriminating whether or not the file name of the file is stored and for outputting the "Y" signal when stored, 7 receives the "Y" signal outputted from the discriminating means 6, and It is a first file reading means for reading a file in the readable / writable storage device 1 according to the file number acquired by the number acquisition means 5.

Reference numeral 8 is a file name extracting means for extracting a file name from the file read by the first file reading means 7, and 9 is a read-only storage device 2 based on the file name extracted by the file name extracting means 8. Is a second file reading means for reading the file.

The file number of the file storing the file name on the read-only storage device 2 is read / read.
A hierarchical file system different from the file number of the file storing the file name on the writable storage device 1 is configured.

Further, 5A is a step in which the file number is obtained by the file number obtaining means 5, and 6A is a readable / writable storage device 1 by the determining means 6.
This is a step of determining whether or not the file name of the file on the read-only storage device 2 is stored in the upper file, and outputting a “Y” signal when the file name is stored.

Reference numeral 7A is a step of reading a file in the readable / writable storage device 1 by the first file reading means 7, and 8A is a step of extracting a file name by the file name extracting means 8.

Next, the operation of the above configuration, that is, the operation of reading the file 4 of the read-only storage device 2 will be described with reference to FIG. First, in step S1, a file name is given, the file number acquisition means 5 is used to search for a file in the readable / writable storage device 1, and the file number is obtained from the file name.

In step S2, the discriminating means 6 is used to discriminate whether or not the file name of the file in the read-only storage device 2 is stored in the file stored in the readable / writable storage device 1, If it is stored (Y), the process proceeds to step S3, and if it is not stored (N), the process ends (END).

In step S3, the first file reading means 7 is used to read / write based on the acquired file number.
A file in the writable storage device 1 is read. In step S4, the file name extracting means 8 is used to extract the file name from the read file. Step S
At 5, the second file reading means 9 can be used to read the file in the read-only storage device 2 based on the extracted file name.

[0016]

As described in detail above, according to the file management system of the present invention, a file in a read-only storage device is related to a file name and a directory position when it is created on the device. Instead, by accessing the directory position and file name of the file in the read / write storage device that stores the file name of the file, the degree of freedom in file processing for handling the file in the read-only storage device can be increased. effective.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a file management system according to the present invention.

FIG. 2 is a flowchart showing the operation of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 readable / writable storage device 2 read-only storage device 3, 4 file 5 file number acquisition means 6 determination means 7 first file read means 8 file name extraction means 9 second file read means

Claims (1)

[Claims] 1. A file name stored in a readable / writable storage device, storing a file name of a file in a read-only storage device, and given a file number that enables identification with other files. Search with
File number acquisition means for acquiring a file number from the file name, and a determination for determining whether or not the file number of the read-only storage device is stored in the file stored in the read / write storage device. Means, first file reading means for reading a file in a readable / writable storage device from the acquired file number, file name extracting means for extracting a file name from the read file, and reading based on the extracted file name A file management method comprising: a second file reading means for reading a file of a dedicated storage device, wherein a file stored in the read-only storage device is managed by a readable / writable storage device.