JPH02226412A - System for storing header of information storage medium - Google Patents

Abstract

PURPOSE:To easily obtain information on a data file by storing the presence of a relating file, the name of the relating file and data specifying an equipment where the relating file is preserved, in a header data storage area. CONSTITUTION:A discrimination data storage area 15 where discrimination data related to the kinds and attributes of plural picture data files is formed in the header data storage area 13. Furthermore, a relating file decision data storage area 16 where relating file decision data related to plural picture data files stored in a picture data file storage area 14 and which shows the presence of the relating files reserved in another equipments are stored is formed. Furthermore, a relating file name data storage area 17 is formed where in the case relating files exist, the relating file name and the relating file name specifying the equipment by which the relating file name is reserved. Thus, information on the data files related to the data files stored in themselves can easily be obtained.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an information storage medium, such as an IC (integrated circuit) card, which can store a plurality of data files, and particularly to a personal computer. Used in a system that uses a computer, etc. to display image data stored on an IC card and simultaneously plays explanatory documents, music, etc. stored on other devices related to the image data. The present invention relates to a header storage method suitable for use as a header storage method.

(Prior Art) As is well known, when multiple data files are stored in an information recording medium such as an IC card with a built-in semiconductor memory, header data regarding the types and attributes of the data files are also stored together. I try to let them do it. That is, as shown in FIG.
Header data storage area 11 where soda data is stored
Thus, a data file storage area 12 in which a plurality of data files are stored is formed.

By the way, in the conventional information storage format as described above, it is possible to determine what kind of data the own data file stored in the information storage medium is, but it is not possible to determine whether there are other related data files. Currently, it is completely impossible to determine whether a related data file exists or, if a related data file exists, to know in which device it is held and with what file name.

Therefore, for example, if an image data file is stored in an information storage medium and a document data file for explaining this image data file is stored in another device, and you want to play both data files at the same time, you can A related table regarding image data files and document data files must be created and managed, and both data files must be played back at the same time while viewing this related table, resulting in a problem that handling becomes extremely complicated.

In addition, it is extremely difficult to automatically associate which devices the created related table corresponds to, and it becomes necessary for the user to define which related table to use before use. .

(Problems to be Solved by the Invention) As described above, in the header storage method of conventional information storage media, no information about data files related to the data files stored in itself is stored. When it is desired to simultaneously reproduce two or more data files, it is necessary to create a related table for those data files, which poses a problem in that handling becomes extremely complicated.

Therefore, this invention was made in consideration of the above-mentioned circumstances, and is extremely advantageous in that it is possible to easily obtain information about data files related to data files stored in oneself without creating a related table or the like. The purpose of this invention is to provide a header storage method for an information storage medium.

[Structure of the Invention] (Means for Solving the Problems) A header storage method for an information storage medium according to the present invention includes a data file storage area in which a plurality of data files are stored, and a data file storage area in which a plurality of data files are stored. The target is a device having a header data storage area in which header data of a plurality of data files is stored.

Then, in the header data storage area, information related to the plurality of data files stored in the data file storage area is stored.
The device stores information on whether or not there are related files stored in other devices, and if there are related files, the name of the related files and data specifying the device in which the related files are stored.

(Operation) According to the above configuration, data identifying the presence or absence of a related file, the name of the related file, and the device in which the related file is stored is stored in the header data storage area of the information storage medium. Therefore, information about data files related to data files stored in itself can be easily obtained without creating a related table or the like.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. In FIG. 1, the information storage medium is formed with a header data storage area 13 where header data is stored and an image data file storage area 14 where a plurality of image data files are stored.

Of these, the header data storage area 13 includes a discrimination data storage area 15 in which discrimination data regarding the types and attributes of a plurality of image data files stored in the image data file storage area 14 is stored, and an image data file storage area 15. A related file determination data storage area 16 in which related file determination data indicating the presence or absence of related files stored in other devices related to the plurality of image data files stored in 14 is stored, and if there are related files; and a related file name data storage area 17 in which the related file name and related file name data specifying the device in which the related file is stored are stored.

The related file determination data storage area 16 is
As shown in FIG. 2, 1-bit information indicates the presence or absence of a related file. Here, an example is shown that shows the presence or absence of a document file and an audio file as related files related to an image data file. When bit DO is '0' and '1#, there is no related document file or When the bit D1 is "0" and '1', it indicates the absence or presence of a related audio file.

Next, the related file name data storage area 17 is stored in the third
As shown in the figure, it has a 1-byte device specification area 18 that indicates the device in which the related file is held, and an 8-byte file name area 19 that specifies the related file name in ASCII code. Then, the device specification area 18
In the following, when bit Do is "1", it indicates that the related file is stored on the floppy disk, and bit D1
When bit D2 is “1”, it indicates that the related file is stored on the hard disk, and when bit D2 is “1”, the cassette file is stored.
Bit D3 indicates that a related file is stored in the component φ streamer, and when bit D3 is "1#", it indicates that a related file is stored in the compact display player.

Further, this related file name data storage area 17 has a variable length structure, and is made into a fixed area to prevent the storage space from existing when it is not needed, and to make effective use of the storage area. . Therefore, when the related file does not exist, the related file name data storage area 17 also does not exist, and the image data file storage area 14 exists following the related file determination data storage area 16.

Furthermore, when multiple related files exist, the related file names are stored in the file name area 19 in the order from MSB (bit D7) to LSB (bit Do) of the related file determination data storage area 16. There is.

Now, when the user accesses the image data file storage area 14 in order to display certain image data, the related file determination data storage area 16 is first checked. Related file determination data always exists for each image data file, and its position is fixed from the start of the image data file, so search for related file determination data that corresponds to the accessed image data file. It's easy.

In this way, by checking the contents of the searched related file determination data, it is possible to know whether or not a related file exists to the accessed image data file. Then, as a result of investigating the related file determination data storage area 1B, if there is no related file to the accessed image data file, the image data file may be used for image display as is.

Further, if it is determined that any related file exists, the related file name data storage area 17 is investigated. Thereby, the user can easily know in which other devices and with what file names the related files related to the accessed image data file are stored.

Therefore, if the related file is an explanatory document for the accessed image data file, the related file can be read out and displayed on another display device, or the explanatory document can be combined with the displayed image and played back at the same time. can. Also, if the related file is music corresponding to the accessed image data file and is recorded on a compact disc, you can specify the music number to the compact disc player and have the music playback at the same time as the image display. Can be done.

FIG. 4 shows an example of a system for performing the operations described above. A personal computer 20 is used to control the system, and an IC card 21 is used as an information storage medium in which header data and image data files are stored. The personal computer 20 transmits information to the IC card 21 via a card reader and a reproducing device 22, and displays an image of the image data file stored in the IC card 21 on a reproducing monitor 23.

Further, the personal computer 20 is capable of transmitting information to various storage media such as a hard disk 24 and a cassette streamer 25.

Here, when the user requests the personal computer 2° to display an image number that is an application program of the system, the personal computer 20 stores the image data file corresponding to the image number on the IC card. 2I and display the image on the reproduction monitor 23.

At this time, the personal computer 20 simultaneously reads the contents of the related file determination data storage area 16 corresponding to the image number, and if it is determined that the related file does not exist, the personal computer 20 monitor (
(not shown) displays the comment “No detailed information”.

Further, if it is determined that a related file exists, the personal computer 20 reads the contents of the related file name data storage area 17 of the IC card 21, and determines what name the related file is stored in on which device connected to the personal computer 20. Information as to whether the file name is stored is obtained, and a file according to the information is read out from the connected device and displayed on the monitor of the personal computer 2o.

For example, if the hard disk 24 is specified by the device specification area 18 of the related file name data storage area 17, and the file name "DEMO" is stored in the file name area 19, the personal computer 20 saves the file name "DEMO" from the hard disk 24. Read and display.

Here, if the previously displayed image and related file match, or if multiple image data files are used for the explanation, do not read the image data file from the IC card 21 and click It is also possible to easily do things such as not changing the display on the monitor of the personal computer 2o.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications without departing from the gist thereof.

C. Effects of the Invention As detailed above, according to this invention, information about data files related to data files stored in oneself can be easily obtained without creating a related table or the like. A good header storage method for an information storage medium can be provided.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining one embodiment of the header storage method of an information storage medium according to the present invention, FIG. 2 is a diagram showing details of the related file determination data storage area of the same embodiment, and FIG.
The figure is a diagram showing details of the related file name data storage area of the same embodiment, FIG. 4 is a block configuration diagram showing the configuration of the same embodiment, and FIG. 5 is for explaining the header storage method of a conventional information storage medium. This is a diagram. 11... Header data storage area, 12... Data file storage area, I3... Header data storage area, 14... Image data file storage area, 15...
Discrimination data storage area, 16... Related file determination data storage area, 17... Related file name data storage area, 1B... Device specification area, 19... File name area, 20... Personal computer, 21...
IC card, 22... card reader, playback machine, 23.
・・Playback monitor, 24・Hard disk, 25・
...Cassette streamer. Applicant's agent Patent attorney Takehiko Suzue Engraving of the drawing (no changes to the contents) (Fig. Fig. Fig. Fig. Hand) Ne City official text April 4, 1999, Director of the Koma Correction Office Old 1) text Tsuyoshi Tono 1, Indication of the case Special fi 1-17219 No. 2, Name of the invention Header storage method of information storage medium 3, Relationship with the person making the amendment f [Relationship with patent applicant (307) 3 stocks Toshiba 4 , Agent 3-7-2-6 Kasumigaseki, Chiyoda-ku, Tokyo, Drawing 7 subject to amendment, Contents of amendment: A copy of the drawing originally attached to the application.

Claims (1)

[Claims] In an information storage medium having a data file storage area in which a plurality of data files are stored and a header data storage area in which header data of the plurality of data files stored in this data file storage area is stored, the header data storage In the area, whether or not there are related files stored in other devices related to the multiple data files stored in the data file storage area, and if there are related files, the related file name and the related file. A header storage method for an information storage medium, characterized in that data identifying a device on which the information is stored is stored.