JP2002288020A - File control method and contents recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a contents recording/reproducing device capable of keeping a link between contents even when the distributed contents are recorded with a name different from the name of the original contents file. SOLUTION: A package control information recording part 131 creates the directory of every package with respect to the contents distributed by a unit of a package, and creates the package control file indicating the relationship between a name of the directory and a package identifier. A contents file recording part 132 creates a file for controlling a group of contents files indicating the relationship between a name of the contents file and a reference name in a case when the contents are linked from the other contents. A link solution information recording part 133 creates a link solution file indicating the relationship between the reference name indicating the contents included in the other package and the package identifier of the other package. A Ink solution part 142 of the reproducing device 140 specifies the file of the link target contents on the basis of the file control information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file management method for a content file stored in a recording medium, a content recording / reproducing apparatus for executing the method, and a program for recording the file management method. In particular, the present invention makes it possible to maintain links between content files.

[0002]

2. Description of the Related Art In recent years, there has been an increasing demand for digital content distribution services using communication and broadcasting.

[0003] For example, every morning, newspaper articles are downloaded to a mobile phone, recorded on a recording medium connected to the mobile phone, and read at any time by connecting the recording medium to another device such as a television. Newspaper article distribution services are being considered. An electronic book service is also considered in which a novel is divided into chapters and billing / downloading is performed in units of this chapter.

[0004] As a specific example of the newspaper article distribution service,
A newspaper article is described in an HTML format file, and one day's worth of H
A method of distributing a TML file and an image file and an audio file attached to the HTML file as one package can be considered. As described above, in a service for distributing related contents as one package, generally, a distributed directory is created for each package and recorded on a storage medium.

At this time, in the package to be distributed, accompanying image files and audio files are linked to HTML files. It is also possible that a certain HTML file is linked to another HTML file. Also, the link is generally realized by being closed within the same package, but the HTML belonging to another package is
There are also cases where a link is made to a file or an image / audio file. As a specific example, a case where a certain newspaper article links an article distributed the previous day as a related article may be considered.

[0006]

However, in a device receiving content distribution, a unique file name is assigned to a content file so that the content can be efficiently recorded and reproduced by simple processing. Because
The directory name or file name of the content recorded on the receiving device on the file system does not always match the reference name described in another content linked to the content. As a result, there is a problem that a case occurs in which the link destination cannot be specified.

[0007] Even in a case where the link destination is recorded so as to be specified, if the directory name or the file name on the file system is changed by the user thereafter, the link destination may be maintained. become unable.

[0008] Even in a case where a link destination is recorded so as to be specified, unlike an interactive service such as Web browsing, in a download service in which a reference is made locally on a recording medium, a link is provided. The previous file does not always exist on the recording medium.

Conventionally, there is no digital content distribution system that takes into account the specification and maintenance of the link destination described above.

An object of the present invention is to provide a file management method capable of maintaining links between contents even when the distributed contents are recorded with a name different from the original contents file name, and a method thereof. And a recording medium on which a content file is recorded by the file management method.

[0011]

According to the present invention, a directory is created for each package, the correspondence between the directory name and the package identifier is managed, and the file name of the content included in the package and the content are linked from another. The above object is achieved by managing the correspondence relationship between the reference name and the reference name when the package identifier of another package and the reference name representing the content included in the other package are managed. .

[0012]

Embodiments of the present invention will be specifically described below with reference to the drawings. The present invention is not limited to these embodiments at all, and can be implemented in various modes without departing from the gist thereof.

(Embodiment 1) FIG. 1 is a block diagram showing a configuration of a content recording / reproducing apparatus according to Embodiment 1 of the present invention. This device mainly includes an input device 110, a recording medium 120, a content recording device 130, a content reproducing device 140, and a display device 150. The input device 110 inputs a content recording request from the user to the content recording device 130 and sends a content reproduction request from the user to the content reproducing device 14.
Enter 0. The content recording device 130 records the content in package units and the file management information on the recording medium 120. The content reproducing device 140 reproduces the content recorded on the recording medium 120 and displays the content on the display device 1.
50 is displayed.

The content recording device 130 includes a package management information recording unit 131, a content file recording unit 132, and a link solution information recording unit 133. The package management information recording unit 131 stores the recording medium 1
20. Package management information for managing the package recorded in 20 is created and recorded on the recording medium 120. The content file recording unit 132 records each content file of the content file group included in the package on the recording medium 120, and creates content file group management information for managing the content file group and records the content file group management information on the recording medium 120. Link resolution information recording unit 1
33 creates link solution information for realizing a link between content files across the packages and records it on the recording medium 120.

The content reproducing apparatus 140 includes a content file acquiring section 141 and a link solving section 142. The content file acquiring unit 141 acquires a specified file from the recording medium 120 in response to a content reproduction instruction from the input device 110. When a link is specified in the content file, the link resolution unit 142 performs a process of specifying a link destination content file based on the link resolution information recorded in the recording medium 120.

The functions of each unit of the content recording device 130 and the content reproducing device 140 are realized by a computer built in the content recording device 130 or the content reproducing device 140 performing a process specified in a program.

Next, a content recording process and a content reproduction process performed by the content recording / reproducing apparatus according to the present embodiment will be described using a specific example.

<Content Recording Process> First, the input device 1
Through 10, the user receives a content recording instruction from the user. At this time, it is assumed that there is a recording instruction of a newspaper article package as shown in FIG.

The newspaper article package shown in FIG. 2 includes HTML files 201 and 202 and an image file 203 for November 14. HTML file 20
1 has a file name of “001114index.htm”, and an image file 203 with a file name of “image1.jpg” is embedded. HTML
The file 202 is “001114page2.htm”
And an image file 203 is embedded as in the HTML file 201. Also,
The HTML file 201 has a hyperlink to the HTML file 202.

FIG. 3 is a diagram showing an example of a directory and file configuration on the recording medium 120, in which the package shown in FIG. Package management file 301
A directory 302 called “PKG00001” is created at the same level as that of FIG. 2. Under this directory 302, a content file group management file 303 and files included in the package shown in FIG. 2 are created. HTML file 20 included in the package shown in FIG.
1, 202 and the image file 203 are respectively "00"
001. htm ”“ 00002.htm ”“ 0000 ”
3. jpg ”.

The content recording device 130 is provided with the input device 1
Upon receiving a content recording instruction from 10, the package management information recording unit 131 first creates or updates the package management file 301.

FIG. 4 is a view showing an example of the package management file 301 at the stage when the package shown in FIG. The package management file 301 manages a correspondence between a package directory number corresponding to a package directory name and a package identifier for uniquely identifying the directory.

In this embodiment, as shown in FIG. 3, the directory name of the package directory corresponding to the package directory number is "PKGxxxxxx (xxx
xx = package directory number) ".

It should be noted that any naming rule can be used as long as the directory name of the package directory can be uniquely derived from the package directory number.

In FIG. 4, a character string "ARTICLE001114" is used as a package identifier. It can be a string, a number, or a symbol.

Next, the content file recording unit 132 records a content file and creates a content file group management file.

FIG. 5 is a diagram showing an example of the content file group management file 303 at the stage when the package shown in FIG. The content file group management file includes a content number corresponding to a file name when recorded on the recording medium 120,
It manages the correspondence between the content and a reference name when the content is linked from another content, and is created for each package directory. It is assumed that the content numbers are numbered in package units.

In the present embodiment, as shown in FIG. 3, the content file name corresponding to the content number is "xx
xxx. EXT (xxxx = content number, EXT
= Extension of the original file name).

It should be noted that the recording medium 120 is obtained from the content number.
Any content file name can be used as long as it can be uniquely derived.

In the package shown in FIG. 2, since there is no link to the content included in another package, the link solution information recording unit 133 does not perform any processing.

Further, it is assumed that when the recording medium 120 is in the state shown in FIG. 3, a recording instruction of the newspaper article package 610 in FIG. 6 is newly generated.

FIG. 6 is a diagram showing a newspaper article package 610 for November 15 consisting of an HTML file 611 and an image file 612. HTML file 611
Has a file name of “001115page1.htm” and an image file 612 with a file name of “logo1.jpg” is embedded. Also, HTM
L file 611 is included in the newspaper article package for November 14 shown in FIG.
It has a hyperlink to the HTML file 202 with the reference name “htm”.

FIG. 7 is a diagram showing an example of a directory and file configuration on the recording medium 120, and shows a case where the newspaper article package 610 of FIG. A directory 701 “PKG00002” is created in the same hierarchy as the package management file 301, and this directory 701
Below, a content file group management file 702 and files included in the package shown in FIG. 6 are created. The HTML files 611 and 612 included in the package shown in FIG.
m "and" 00002.jpg ".

FIG. 8 is a diagram showing an example of the package management file 301. The newspaper article package 610 shown in FIG.
Is a stage newly added to the recording medium 120. Compared to FIG. 4, information on a newspaper article package for November 15 is newly added.

FIG. 9 is a diagram showing an example of the content file group management file 702, at the stage when the newspaper article package 610 in FIG. 6 is newly added to the recording medium 120. The configuration of the content file group management file is the same as that shown in FIG.

As shown in FIG. 6, in the HTML file 611 of the package for November 15, there is a link to the content included in another package. A link resolution file 703 shown is created.

FIG. 10 is a diagram showing an example of the link solution file 703. The link resolution file manages a correspondence between a reference name indicating a link to content included in another package and a package identifier of a package in which the linked content exists, and includes a content including a link across packages. Is created for each package directory in which.

<Content Reproduction Processing> It is assumed that a request to reproduce the HTML file 201 shown in FIG.

First, the content file acquisition section 141
Obtains the HTML file 201 from the recording medium 120.

Here, since the image file "image1.jpg" is embedded in the HTML file 201, the link resolver 142 resolves the reference to the image.

FIG. 11 is a diagram showing a processing flow in the link solving section 142. Hereinafter, the image file “ima
ge1. jpg ”will be described with reference to FIG.

Step 1101: First, a reference name “image1.jpg” is acquired from the HTML file 201.

Step 1102: HTM as Link Source
It is checked whether a link resolution file exists in the package directory to which the L file belongs. In this example, as can be seen from FIG. 7, since the link resolution file does not exist in the package directory 302 to which the HTML file 201 belongs, the process proceeds to step 1108.

Step 1108: Looking at the content file group management file in the package directory to which the HTML file belongs, searching for the reference name obtained in step 1101, and obtaining the content number corresponding to this reference name. In this example, the reference name “image” is shown in FIG.
1. "000" as the content number corresponding to "jpg"
03 ".

Step 1109: The content file corresponding to the content number obtained in step 1108 is specified as a reference destination file. In our example,
As can be seen from FIG. 7, the image file 203 of “00003.jpg” is specified, and the reference to the image is resolved.

The link resolving unit 142 uses the reference destination file name specified in this way and the content file obtaining unit 14
When the content file acquisition unit 141 acquires the reference destination file “00003.jpg” from the recording medium 120, the image is converted to H
It is embedded in the TML file 201 and output to the display device 150.

The above is the reproduction process of the HTML file 201.

Next, a description will be given of a link solving process when the user follows a link from the displayed HTML file 611 to a content included in another package.

Step 1101: First, the reference name “001114page2.ht” is read from the HTML file 611.
m ”.

Step 1102: HTM as link source
Package directory 70 to which L file 611 belongs
First, it is checked whether or not a link resolution file exists.
In this case, as can be seen from FIG. 7, since the link solution file 703 exists in the package directory 701, the process proceeds to step 1103.

Step 1103: link resolution file 7
03, it is checked whether or not there is an entry of the reference name acquired in step 1101. As can be seen from FIG. 10, the link resolution file 703 includes the reference name “001114pag”.
e2. htm ”entry, step 1
The process proceeds to step 1105 via 104. If there is no entry in the link solution file 703, the process proceeds to step 1108 via step 1104.

Step 1105: Reference name "001114"
page2. htm ”, the package identifier“ A ”
RTICLE001114 ", and the process proceeds to step 110.
Proceed to 6.

Step 1106: From the package management file 301, the acquired package identifier “ART
The package number “0” corresponding to “ICLE001114”
0001 ”and the package in which the referenced file exists is stored in the package directory 302 (PKG0000).
It turns out that it is 1).

Step 1107: Next, the content file group management file 3 in the package directory 302
01, the reference name acquired in step 1101 is searched, and the content number corresponding to the reference name is acquired.
In this example, from FIG. 5, the reference name “001114pa
ge2. htm ”as the content number“ 0 ”
0002 ".

Step 1109: The content file “00002.htm” 202 corresponding to the content number acquired in step 1107 is specified, and the link to the content included in another package is resolved.

As described above, in this embodiment, the package management file for managing the correspondence between the package directory number corresponding to the package directory name and the package identifier for uniquely identifying the directory.
In addition, a content file group management file for managing a correspondence between a content number uniquely corresponding to a file name when recorded on the recording medium 120 and a reference name when the content is linked from another content is created. By using these management files, the directory name or file name when the content is recorded on the recording medium 120 is different from the reference name described in another content linked to the content. Even if there is, the link destination can be specified.

Further, a link resolution file for managing a correspondence between a reference name indicating a link to content included in another package and a package identifier of the package in which the linked content exists, and a link across the packages are included. Create for each package directory where content exists. By using this link solution file, it is possible to follow a link to content belonging to another package.

Further, according to the present embodiment, the file name of the file recorded on the recording medium can be arbitrarily set, so that there is an effective solution to the case where the number of characters in the file name is limited. Become.

In the present embodiment, the structure of the link resolution file has been described as a simple correspondence table between reference names and package identifiers. Alternatively, a method such as a hash method or a B-tree may be introduced.

Further, in the present embodiment, an HTML file and an image file have been described as examples of the content file, but the content file may be any other type of file.

(Embodiment 2) In Embodiment 2, a file management method will be described in which a link destination can be maintained even when a directory name or a file name is changed by a user.

The configuration of the content recording / reproducing apparatus according to the present embodiment is the same as that of the first embodiment shown in FIG. However, the present embodiment is different from the first embodiment in that the components of the package management file created by the package management information recording unit 131 and the components of the content file group management file created by the content file recording unit 132 Is different.

Hereinafter, the content recording process and the content reproduction process according to the present embodiment will be specifically described.

The recording medium 12 when the package shown in FIGS. 2 and 6 is recorded by the content recording device 130.
0 has the same directory and file structure as in FIG. However, since the contents of the package management file 301 and the contents group management files 303 and 702 are different, the codes are respectively assigned to the package management file 12 and the package management file 12.
01, content group management files 1301 and 1401
The following description will be given.

FIG. 12 shows a package management information recording unit 13.
1. The package management file 1201 created by
It is a figure showing an example of. This package management file 1
Reference numeral 201 is different from FIG. 8 in the first embodiment in that the correspondence between the package directory name and the package identifier on the recording medium 120 is managed instead of the package directory number.

FIG. 13 is a diagram showing an example of the content file group management file 1301. What is different from FIG. 5 of the first embodiment is not the content number but the recording medium 1.
20 manages the correspondence between the content file name and the reference name.

FIG. 14 is a diagram showing an example of the content file group management file 1401 at this time.

Note that, in the present embodiment, unlike the first embodiment, the package directory name and the storage medium 120 are different.
The content file name described above can be given an arbitrary name without any particular naming rule.

The operation of the content file acquisition section 141 in the content reproduction processing in the present embodiment is the same as in the first embodiment.

The processing of the link resolution section 142 in the content reproduction processing in the present embodiment is the same as that of the first embodiment except for the following three points.

A) In step 1106, when the package directory is specified, the package directory name corresponding to the package identifier is directly obtained instead of the package number corresponding to the package identifier according to the naming rule.

B) In step 1107, a content file name is directly obtained instead of a content file number.

C) In step 1108, a content file name is directly obtained instead of a content file number.

Thus, the same link solving effect as in the first embodiment can be obtained.

Assume that the directory name of the package directory 302 is changed from “PKG00001” to “November 14 article” by some operation as shown in FIG. At this time, along with the process of changing the directory name on the file system, the package management information recording unit 131 rewrites the package management file with the corresponding package directory name as shown in FIG. Thereby, even if the directory name is changed after being once recorded on the recording medium 120, the link destination can be maintained.

Similarly, even when the content file name on the recording medium 120 is changed instead of the package directory, the content file recording unit 132 changes the corresponding content file name portion of the content file group management file, so that the link destination is changed. Can be maintained.

As described above, in this embodiment, when the package directory name or the content file name is changed by some operation, the corresponding package directory name portion of the corresponding package management file or the content file group management file By changing the corresponding content file name, the link destination can always be maintained.

(Embodiment 3) In Embodiment 3, a description will be given of a method of making a distribution reservation when another package including a linked file does not exist on a recording medium.

FIG. 17 is a block diagram showing a configuration of a content recording / reproducing apparatus according to Embodiment 3 of the present invention. Note that, in the content recording / reproducing device of FIG. 17, the same components as those of FIG. The content recording / reproducing apparatus shown in FIG. 17 has a configuration in which a distribution reservation list file recording unit 143 for creating a distribution reservation list file is added to the content reproducing apparatus 140 as compared with FIG.

A distribution server that provides a service to the content recording / reproducing apparatus of FIG. 17 assigns a package identifier to each of the packages to be distributed, and manages the correspondence between the distribution package data and the package identifier.

FIG. 18 is a diagram showing an example of a package identifier management table held by the distribution server for managing the correspondence between the distribution package and the package identifier. This package identifier management table describes a package identifier and a pointer to distribution package data to which the package identifier is assigned.

When a link to content included in another package exists in the file of the package, the distribution server determines a reference name indicating the link to the content and a package identifier of the package in which the linked content exists. Is created with reference to the package identifier management table, and is included in the package data and distributed.

FIG. 19 shows distribution package data when the distribution server distributes the package 610 shown in FIG. The distribution package data includes a distribution metadata file that records metadata such as bibliographic items, management information, and attribute information related to the content, a link resolution file, “001115page1.htm”, and “l”.
ogo1. A content file having a file name of ".jpg" is included, and information of the package identifier is recorded in the metadata file at the time of distribution. The link resolution file has the same contents as in FIG.

When the distribution package data is input,
The package management information recording unit 131 of the content recording device 130 creates a package management file using the package identifier assigned by the distribution server. When the distribution package data includes a link solution file, the link solution information recording unit 133 stores the link solution file in the recording medium 120. The operation of the content file recording unit 132 is the same as in the first embodiment.

Now, consider a case where only the package shown in FIG. 6 is recorded on the recording medium 120 by the content recording device 130. FIG. 20 shows the recording medium 1 at this time.
FIG. 2 is a diagram showing a directory and a file configuration in FIG. FIG. 20 is different from FIG.
2. Content file group management file 303, HTM
There are no L files 201 and 202 and no image file 203, and the contents of the package management file 2001 are different from those of the package management file 301. Directory 7
01, the content file group management file 702 and the link resolution file 703 are the first embodiment.
Is the same as FIG. 9 and FIG.

FIG. 21 shows a package management file 200.
FIG. 3 is a diagram showing an example of the first example. Package management file 20
01 manages the correspondence between the package directory number corresponding to the package directory name and the package identifier for uniquely identifying the directory.

The following describes a link solving process when the user follows a link from the HTML file 611 being displayed to a content included in another package when the recording medium 120 is in such a state.

FIG. 22 is a diagram showing a processing flow in the link solving section 142 in the third embodiment. In addition,
In FIG. 22, steps common to FIG.
The same reference numerals are used. Step 1106 in FIG.
Step 1107, step 1108, step 110
In the case of proceeding to 9, the description is omitted because the process is common to that of FIG.

Step 1101: First, the reference name “001114page2.ht” is read from the HTML file 611.
m ”.

Step 1102: HTM as Link Source
Package directory 70 to which L file 611 belongs
First, it is checked whether or not a link resolution file exists.
In this case, as can be seen from FIG. 20, since the link solution file 703 exists in the package directory 701, the process proceeds to step 1103. If the link solution file 703 does not exist, the process proceeds to step 1108.

Step 1103: link resolution file 7
03, it is checked whether or not there is an entry of the reference name acquired in step 1101. As can be seen from FIG. 10, the link resolution file 703 includes the reference name “001114pa
ge2. Since the entry “htm” exists, the process proceeds to step 1105 via step 1104. If there is no entry in the link solution file 703, the process proceeds to step 1108 via step 1104.

Step 1105: Reference name "001114"
page2. htm ”, the package identifier“ A ”
RTICLE001114 "is obtained and step 220
Proceed to 1.

Step 2201: The acquired package identifier “ART” is added to the package management file 2001.
It is checked whether there is an entry of “ICLE001114”. In this case, as can be seen from FIG. 21, there is no entry, so the process proceeds to step 2202. If there is an entry of the acquired package identifier, step 11
Proceed to 06.

Step 2202: The processing of the distribution reservation list file recording section 143 is executed. FIG. 23 is a diagram illustrating a processing flow in the distribution reservation list file recording unit 143 according to the third embodiment.

Step 2301: First, when a connection is established with the distribution server at the next distribution, the user is asked whether or not the package including the reference destination file is to be distributed. If you do not want to do so, exit without doing anything. If so, the process proceeds to step 2302.

Step 2302: The acquired package identifier “ARTICLE001114” is entered in the distribution reservation list file. FIG. 24 shows an example of a directory and file configuration on the recording medium 120 at this time.
401 is added. FIG. 25 is a diagram illustrating an example of the distribution reservation list file 2401. In step 2302, if the distribution reservation list file does not exist on the recording medium 120, it is newly created.

Thereafter, when the connection between the content recording device and the distribution server is established for distribution, if the distribution reservation list file 2401 exists on the recording medium 120, the distribution reservation list file 2401 The package identifier entered in 2401 is transmitted to the distribution server. The distribution server obtains a package corresponding to the package identifier from the package identifier management table, and performs a process of downloading the package.

The distribution reservation list file recording unit 143
When a package having the same package identifier as the package identifier recorded in the distribution reservation list file 2401 is distributed from the distribution server, the distribution reservation list file is deleted when the download of the package is completed.

As described above, in the present embodiment, the distribution reservation list file recording unit 143 is provided and the recording medium 120
By creating a distribution reservation list file that contains the package identifier of the package that does not exist on the
At the next connection establishment with the distribution server, the required package can be automatically downloaded without forcing the user to perform a special operation.

In the present embodiment, the method of storing the distribution reservation list file on the recording medium 120 has been described. A method of storing the information in a storage area on the recording / reproducing device may be used.

Further, in the present embodiment, the distribution reservation list file is erased when the download of the package entered in the distribution reservation list file is completed, but the distribution reservation list file is not deleted. You can reset the contents of the file.

In each of the above embodiments, the case where the link solution file is created by the link solution information recording unit 133 of the content recording apparatus 130 has been described. However, the present invention is not limited to this. A solution file may be created together and attached to the content for distribution.

Further, the recording medium 120 in which the content and the file management information are recorded by the content recording apparatus 130 can be mounted on another content reproducing apparatus to reproduce and display the recorded content.

Further, the procedure in the file management method of the present invention is recorded on a recording medium, this recording medium is mounted on a content recording / reproducing apparatus, and the procedure of the file management method of the present invention is loaded on the content recording / reproducing apparatus. Can be.

[0105]

As is apparent from the above description, according to the present invention, a directory name and a file name when a content is recorded on a recording medium are described in another content linked to the content. Even if the reference name is different, the link destination can be specified. Further, even when the linked content belongs to another package, the linked content can be specified.

Further, after the content file is recorded on the recording medium, even if the file name or directory name of the file is rewritten by the user, the link destination can always be maintained.

Further, the content recording / reproducing apparatus of the present invention which implements this file management method automatically assigns a unique file name to the distributed contents, or allows the user to assign a file name or Even when the directory name is rewritten, the link destination of the content can be maintained, and the distributed content can be displayed according to the editing intention.

Further, when the package including the reference destination file does not exist on the recording medium, the required package can be automatically downloaded at the time of establishing the next connection with the distribution server without forcing the user to perform a special operation. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a content recording / reproducing apparatus according to Embodiment 1 of the present invention;

FIG. 2 is a diagram showing an example of a newspaper article package according to the first embodiment of the present invention;

FIG. 3 is a diagram showing an example of a directory and file configuration on a recording medium according to Embodiment 1 of the present invention;

FIG. 4 is a diagram showing an example of a package management file according to the first embodiment of the present invention;

FIG. 5 is a diagram showing an example of a content file group management file according to the first embodiment of the present invention;

FIG. 6 is a diagram showing an example of a newspaper article package according to the first embodiment of the present invention;

FIG. 7 is a diagram showing an example of a directory and file configuration on a recording medium according to Embodiment 1 of the present invention;

FIG. 8 is a diagram showing an example of a package management file according to the first embodiment of the present invention;

FIG. 9 is a diagram showing an example of a content file group management file according to the first embodiment of the present invention;

FIG. 10 is a diagram showing an example of a link resolution file according to the first embodiment of the present invention;

FIG. 11 is a diagram showing a processing flow of a link solving unit according to the first embodiment of the present invention;

FIG. 12 is a diagram showing an example of a package management file created by a package management information recording unit according to Embodiment 2 of the present invention;

FIG. 13 is a diagram showing an example of a content file group management file according to the second embodiment of the present invention;

FIG. 14 is a diagram showing an example of a content file group management file according to the second embodiment of the present invention;

FIG. 15 is a diagram showing a case where a directory and a directory name of a file configuration are changed in Embodiment 2 of the present invention;

FIG. 16 is a diagram showing rewriting of a package management file according to the second embodiment of the present invention;

FIG. 17 is a block diagram showing a configuration of a content recording / reproducing device according to Embodiment 3 of the present invention;

FIG. 18 is a diagram showing an example of a package identifier management table managed by the distribution server according to the third embodiment of the present invention;

FIG. 19 is a diagram showing an example of distribution package data distributed from a distribution server according to Embodiment 3 of the present invention;

FIG. 20 is a diagram showing an example of a directory and file configuration on a recording medium according to Embodiment 3 of the present invention;

FIG. 21 is a diagram showing an example of a package management file according to the third embodiment of the present invention;

FIG. 22 is a diagram showing a processing flow of a link solving unit according to the third embodiment of the present invention;

FIG. 23 is a diagram showing a processing flow of a distribution reservation list file recording unit according to the third embodiment of the present invention;

FIG. 24 is a diagram showing an example of a directory and file configuration on a recording medium according to Embodiment 3 of the present invention;

FIG. 25 is a diagram showing an example of a distribution reservation list file according to Embodiment 3 of the present invention.

[Explanation of symbols]

 110 Input Device 120 Recording Medium 130 Content Recording Device 131 Package Management Information Recording Unit 132 Content File Recording Unit 133 Link Resolution Information Recording Unit 140 Content Playback Device 141 Content File Acquisition Unit 142 Link Resolution Unit 143 Distribution Reservation List File Recording Unit 150 Display Device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Naohiko Noguchi 1006 Kadoma, Kazuma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. Terms (reference) 5B082 EA01 EA09

Claims (19)

[Claims] 1. A file management method in a recording medium for recording a file of a distributed content, wherein a directory is created for each package, and a file of the content included in the package is recorded under the directory. The correspondence between the directory name of the directory and the package identifier attached to the package is managed by a package management file, and the file name of the content file recorded on the recording medium and the content are linked from other content. A file management method that manages the correspondence with the reference name in the case using a content file group management file. 2. When a content linked to content included in another package exists in the package, a reference name representing the content included in the other package and a package identifier of the other package are used. 2. The file management method according to claim 1, wherein the correspondence is managed by a link resolution file. 3. A method of naming the directory name in association with a package directory number uniquely numbered for a package, and managing a correspondence between the package directory number and the package identifier in the package management file. The file management method according to claim 1. 4. A method of naming a file name of the content in association with a content number numbered in a package unit, and managing a correspondence relationship between the content number and the reference name in the content file group management file. Item 2. The file management method according to Item 1. 5. A relationship between the directory name and the package identifier is described in the package management file,
The relationship between the file name and the reference name is described in the content file group management file, and when the directory name or the file name is changed, the directory name of the package management file or the file name of the content file group management file is changed. 2. The file management method according to claim 1, wherein the file name is changed. 6. The file management method according to claim 2, wherein when a package including the content of the link destination does not exist on the recording medium, a distribution reservation list file in which a package identifier of the package is entered is created. 7. The file management method according to claim 6, wherein the distribution reservation list is created on the recording medium. 8. A method for storing the distribution reservation list in a content recording /
7. The file management method according to claim 6, wherein the file is created in a memory area of the playback device. 9. When reproducing a content recorded on a recording medium by the file management method according to claim 2,
2. The content file group according to claim 1, wherein a content file is extracted from the recording medium, and the content file includes a link designation for a file included in the same package as the package including the content. A content reproduction method for specifying a file of a link destination content using a management file. 10. The package management file according to claim 1 and the package management file according to claim 2, wherein a link is specified in a file of the content to a file included in a package different from the package including the content. The content reproduction method according to claim 9, wherein a file of the link destination content is specified using the link solution file. 11. A content recording apparatus for recording a distributed content file on a recording medium, wherein a directory is created for each package, and a package indicating a correspondence between a directory name of the directory and a package identifier assigned to the package. A package management information recording unit that creates a management file and records it on the recording medium; and a correspondence relationship between a file name of a file of the content included in the package and a reference name when the content is linked from another content. A content recording device comprising: a content file group management file to be created; and a content file recording unit that records the content file and the content file group management file on the recording medium. 12. In the case where a content linked to content included in another package exists in the package, correspondence between a reference name representing content included in the other package and a package identifier of the other package. The content recording apparatus according to claim 11, further comprising a link solution information recording unit that creates a link solution file indicating a relationship and records the link solution file on the recording medium. 13. A content reproducing apparatus for reproducing a content from a recording medium on which a content file is recorded by the content recording apparatus according to claim 12, wherein the content file acquiring means for extracting the content file from the recording medium; If a link is specified for a file included in the same package as the package in which the content is included in the content file, a file of the link destination content is changed using the content file group management file according to claim 11. A content reproducing apparatus comprising: a link solving unit to specify. 14. If the file of the content has a link designation for a file included in a package different from the package in which the content is included, the link resolving means includes the package management file according to claim 11, 14. The content reproduction device according to claim 13, wherein a file of a link destination content is specified using the link solution file according to claim 12. 15. The distribution reservation list file recording means for creating a distribution reservation list file in which a package identifier of the package is entered when a package including the link destination content does not exist on the recording medium. The content reproduction device according to any one of the preceding claims. 16. A package management apparatus for creating a directory for each package by a computer, creating a package management file indicating a correspondence between a directory name of the directory and a package identifier assigned to the package, and recording the package management file on the recording medium. Information recording means, creating a content file group management file indicating the correspondence between the file name of the content file included in the package and the reference name when the content is linked from another content, A program for functioning as content file recording means for recording the content file group management file on the recording medium. 17. In the case where a content linked to content included in another package exists in the package, correspondence between a reference name representing content included in the other package and a package identifier of the other package. 17. The program according to claim 16, which functions as link solution information recording means for creating a link solution file indicating a relationship and recording the link solution file on the recording medium. 18. A content file acquisition unit for retrieving a content file from a recording medium on which a content file is recorded by the content recording device according to claim 12, If a link is specified for a file included in the same package as the package in which the content is included in the content file, a file of the link destination content is changed using the content file group management file according to claim 11. A content reproduction program for functioning as link resolution means for specifying. 19. The method according to claim 11, wherein in the content file, when a link is specified for a file included in a package different from the package in which the content is included, the link resolving unit performs the link management on the package management file according to claim 11. 19. The content reproduction program according to claim 18, which functions as means for specifying a file of a link destination content using the link solution file according to claim 12.