JPH03282947A - File managing system - Google Patents

Abstract

PURPOSE:To hold the portability, independency and rapid retrieval of an external recording medium by including a storage area, a file index label storing area and a retrieving information attribute label storing area in the storage medium. CONSTITUTION:When an operator loads the external storage medium to a reader and instructs a retrieving condition relating to a required file to an information processor, the processor reads out the file name of a file matched with the commanded retrieving condition and other retrieving condition written in a retrieving information attribute label from a retrieving information attribute label storing area 10 and offers the read results to the operator. The operator knows the required file name and commands its reading. At the time of receiving the file reading command from the operator, the information processor retrieves the command file index label from the file index label storing area 20, recognizes an information position storing the file body and reads out the file body from the file storing area 30.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a file management system in an external storage medium of an information processing device.

(Prior art) A conventional example is shown in Fig. 2.The conventional example shown in Fig. 2 includes a file storage area 30 that stores file data itself, and file attributes such as file name, creator, and creation date. A file index label storage area 20 in which information and address information indicating the storage location of the file entity on the storage medium are written.
is provided on an external storage medium.

When accessing a file, when a file name is specified, the file index label storage area 20 is searched, physical address information of the target file is obtained, and the target file is thereby found.

[Problems to be Solved by the Invention] However, in the above conventional example, when the number of files that can be stored on one external storage medium increases, such as with large-capacity external storage media such as optical disks, which have made dramatic advances in recent years, had the disadvantage that the target file could not be accurately identified using only the file name.

One possible method for avoiding the above-mentioned inconvenience is to add keyword information to the file attribute information to support the search. However, adding a wealth of keyword information increases the data length of one file index label, which increases the time needed to search for the required file index label and reduces efficiency.

In addition, keyword searches are only necessary for files that are directly searched by humans, such as document files in word processors or electronic filing, and are automatically handled with self-explanatory file names, i.e., reserved file names by the program. This is redundant information for files that are

Therefore, methods were devised to manage the management information in Chiful format, which corresponds to keywords and file names, in a separate storage medium, or to store the keyword information at the beginning of the file itself as file header information rather than as a file index label. The former method impairs the portability and independence of the storage medium, and the latter method does not allow continuous reading because the header part of each file is physically written to a discontinuous location on the storage medium. In addition, a search process for the file index label of each file is required each time one header is read, resulting in a problem that high speed is impaired.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a file management method that improves the disadvantages of the conventional method and does not impair the portability and independence of storage media and the high speed of searches, especially in large-capacity external storage media.

[Means to solve the problem]

Therefore, the present invention includes an external storage medium having a file storage area that stores the file data itself and a file index label storage area that stores the start address information of each file in the file storage area for file search. In a file management method that inputs file data to an external storage medium using a predetermined information processing device or reads stored file data, attribute information of each file is stored at a predetermined location on the external storage medium. The configuration is such that a search information attribute label storage area is provided. This aims to achieve the above-mentioned purpose.

[Operation] The operator loads the external storage medium into the reading device and instructs the information processing device to search conditions related to the desired file. The information processing device reads the file name of the file that matches the specified search condition from the search information attribute label storage area and other search conditions written in the search information attribute label, and provides them to the operator. The operator thereby learns the file name of the desired file and instructs Sarah to read it. When the information processing device receives an instruction to read a file from the operator, it searches the file index label storage area for the file index label of the instructed file, recognizes the storage location where the entity of the file is stored, and reads the file. Reads the file entity from the storage area.

In the case of a file that is automatically treated with an obvious file name, that is, a reserved file name by the program, the file index label of the specified file is immediately searched from the file index label storage area, and the actual file is stored. Recognizes the storage location of the file and reads the actual file from the file storage area.

[Embodiments of the invention] An embodiment of the present invention will be described below with reference to FIG.

In the embodiment shown in FIG. 1, there is a file storage area 30 that stores the file data itself, and a file index label storage area that stores the start address information of each file in the file storage area 30 for file search. 20 and a search information attribute label storage area 10 storing attribute information of each file on an external storage medium.

Here, a case will be explained in which only five files are created. The file names of the five files are A, B, C,
D and E, and the substance of each file is file storage area 3.
File A storage area 31, file B storage area 3 in 0
2. File C storage area 33, File D storage area 34
, are stored in the file E storage area 35.

The file index label of each file is the file A index label 21 in the file index label storage area 20.
, File B index label 22, File C index label 2
3, stored in the file D index label 24 and file E index label 25.

Furthermore, among these five files, there are three files that require search information attributes for operational purposes, namely file A.
, C, and E exist, the search information attribute label of each file is File A search information attribute label 11, File C search information attribute label 12, and File E search information attribute label 13 in the search information attribute label storage area 10. is stored in.

An operator loads an external storage medium into a reading device and instructs the information processing device to search conditions for a desired file. The information processing device stores search information attribute label storage area 1.
The file name of the file matching the search condition specified from 0 and other search conditions written in the search information attribute label are read out and presented to the operator.

The operator thereby learns the file name of the desired file and issues a read instruction.

When the information processing device receives an instruction to read a file from an operator, it searches the file index label storage area 20 for the file index label of the instructed file, recognizes the storage location where the entity of the file is stored, and reads the file. The file entity is read from the storage area 30.

In the case of files with obvious file names such as files B and D, that is, files that are automatically treated with reserved file names by the program, the file index label of the specified file is suddenly searched from the file index label storage area 20. Then, the storage location where the file entity is stored is recognized, and the file entity is read from the file storage area 30.

〔Effect of the invention〕

As described above, according to the present invention, there is a file storage area that stores the file data itself, and a file index label storage area that stores the start address information of each file in the file storage area for file search. , the search information attribute label storage area that stores the attribute information of each file is configured on the external storage medium, so the attribute information of only the necessary files can be contiguously stored on one storage medium. and can be stored.

Therefore, it is possible to provide an unprecedented and excellent file management method that does not impair the portability and independence of the storage medium and the high speed of searching even in a large-capacity external storage medium.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional example. 10... Search information attribute label storage area, 20...
...File index label storage area 30. ,,,File storage area.

Claims (3)

[Claims] (1) an external storage medium having a file storage area for storing file data itself and a file index label storage area for storing start address information of each file in the file storage area for file search; In a file management method that inputs file data to an external storage medium using a predetermined information processing device or reads stored file data, attribute information of each file is stored at a predetermined position on the external storage medium. A file management method characterized by providing a search information attribute label storage area for storing search information attribute labels. (2) The file management system according to claim 1, wherein the search information attribute label storage area stores only search information attribute labels of files that require search information attributes for operational purposes. (3) The file management method according to claim 1 or 2, wherein the file index label storage area stores a file index label of a stored file.