JP2003085033A - File conversion system, computer, program and file conversion method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To convert efficiently a BML file into an HTML file. SOLUTION: This computer 1 has a style sheet processor 22 for reading out a CSS 21, a script 22 and a body tag 23 from the BML file 20, inputting them into a Java program 25, and generating an HTML file using style attributes, the script and the tag returned from the Java program 25, and the Java program 25 for converting the inputted CSS 21 and script 22 into a description form of the HTML respectively, and returning them to the style sheet processor 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file conversion system, computer, program and file conversion method used in, for example, a BS digital broadcast production system.

[0002]

2. Description of the Related Art In recent years, as a method of providing contents to users, it has become possible to provide services by various methods such as the method of using the Internet and the method of using BS digital broadcasting.

Programs for BS digital broadcasting are produced based on a content description language called Broadcast Markup Language (BML), and are managed as BML files on a computer installed in a broadcasting station, a program production company or the like.

On the other hand, on the Internet, contents based on a content description language called Hypertext Markup Language (HTML), that is, HTML, is used.
The file is created and the content is provided on a web server.

At present, attempts are being made to combine these contents into one and provide it to users who desire to provide program contents.

[0006]

[Problems to be Solved by the Invention] However, HTM
Although there are many technologies for converting L files into other languages, the technology for converting BML files into HTML files has not yet been completely constructed, so currently, conversion of tags is performed using general-purpose conversion software. As for the remaining scripts, etc., there is a problem that the work efficiency is poor because the engineer has to decode the content of the BML file and rewrite it in the HTML description.

The present invention has been made to solve such a problem, and can realize a service for providing a program content for BS digital broadcasting generated in the BML format to a user by a request from the Internet. It aims to provide a file conversion system.

Further, the present invention is a computer capable of efficiently performing data conversion from BML to HTML,
The purpose is to provide a program and a file conversion method.

[0009]

In order to achieve the above object, the file conversion system of the invention according to claim 1 receives a file request from the user via the Internet and provides the file to the requesting user. In the file conversion system, the file storing means for storing the first file generated in the BML format, and the first file in the corresponding BML format among the files in the file storing means according to the file request from the user. Is converted into a second file in HTML format and delivered to the requesting user through the Internet.

A computer according to a second aspect of the present invention is B
A computer for converting the first file generated in the ML format into a second file in the HTML format, means for reading the style sheet from the first file, and obtaining the cascading style sheet, script, and tag; A means for analyzing the acquired cascading style sheet, script, and tag and converting it into an HTML style attribute, script, and tag, and means for merging the converted style attribute, script, and tag to output a second file. It is characterized by having.

The program of the invention according to claim 3 is BM
In a program for causing a computer to convert a first file generated in L format into a second file in HTML format, the computer is set
A method to read the style sheet from the file of 1 and acquire the cascading style sheet, script, and tag, and a method to analyze the acquired cascading style sheet, script, and tag and convert it into HTML style attributes, script, and tags. , A program for merging the converted style attributes, scripts, and tags to function as a means for outputting the second file.

According to the file conversion method of the present invention, in the file conversion method, the computer accepts a file request from the user via the Internet, and the file is provided to the requesting user. According to the file request, the first file in the corresponding BML format among the files stored in the file storage means is replaced by the second file in the HTML format.
And a step of delivering the converted second file to the requesting user via the Internet.

According to a fifth aspect of the present invention, in the file conversion method, the first file generated in the BML format is converted into the HTM.
In a file conversion method for converting to a second file of L format, a style sheet is read from the first file, a cascading style sheet, a script,
The step of acquiring the tag and the acquired cascading style sheet, script, and tag are analyzed, and HTML
And a step of merging the converted style attributes, scripts, and tags to output the second file.

According to the first and fourth aspects of the invention, when the first file generated in the BML format is stored in the first file storage means and the computer receives a file request from the user through the Internet, The computer uses the corresponding BM in the first file storage means.
Since the L format file is converted to the HTML format second file and distributed to the requesting user, if only the program content for the BS digital broadcasting generated in the BML format is stored, it can be transmitted through the Internet. It is possible to realize a service that provides the user with the program content in the HTML format in response to a request from the user.

According to the second, third, and fifth inventions, the style sheet is read from the first file, the cascading style sheet, the script, and the tag are acquired and analyzed, and the HTML style attribute, the script, and the tag are separately separated. Since the converted style attributes, scripts, and tags are merged to generate and output the second file, the data conversion from BML to HTML can be performed reliably and efficiently.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of a computer as a file conversion system according to one embodiment of the present invention, FIG. 2 is a diagram showing a schematic configuration of a BML file stored in advance in this computer, and FIG. 3 is a diagram showing this computer. It is a figure which shows the structure of the installed software.

As shown in the figure, this computer is
A device main body that can be loaded by reading a CD-ROM or a flexible disk (FD), a CPU, a ROM, a RAM, a hard disk device, etc. built in this device main body, an input device connected to the device main body, and A computer including a display device. The input device is, for example, a keyboard or a mouse. The display device is, for example, a CR
Examples include T monitors and LCD monitors.

A ROM in the main body of the apparatus stores an initial operation setting program of a computer such as BIOS. Various software including an operating system (hereinafter referred to as OS) is installed in the hard disk device. In addition, the hard disk device,
It is assumed that the BML file to be converted is stored in advance.

As shown in FIG. 2, the BML file 20
Is a style sheet 24, cascading style sheet 21 (hereinafter referred to as CSS21), script 2
2. It has each description part of the body tag 23.

As software installed in the hard disk device, as shown in FIG. 3, BML is used.
A style sheet processor 31 that reads a style sheet 24 from the file 20 and generates an HTML file 40 based on the description of the style sheet 24, Ja
There is a va program 32 and the like. Java is Sun
It is a registered trademark of Microsystems. The style sheet processor 31 reads the style sheet 24 from the BML file 20, and the CSS2 in the style sheet 24 is read.
1, the description parts of the script 22 and the body tag 23 are extracted and input to the Java program 32. The style sheet processor 31 uses general-purpose software, but may be a dedicated one.

The Java program 32 uses the input C
The SS 21 and the script 22 are analyzed, converted into style attributes, scripts, and tags that can be called by HTML, and returned to the style sheet processor 22. In addition, body
The style sheet processor 31 converts the tag 23, and if style attribute data is present in this, the attribute data is passed to the Java class when the CSS 21 was analyzed first.

The style sheet processor 31 is Java
a Outputs the HTML file 40 generated by the style attribute, script, and tag returned from the program 32.

The operation of this computer will be described below with reference to FIGS. FIG. 4 is a flowchart showing the operation of this computer, and FIG. 5 is a diagram showing an example of the style sheet read by the style sheet processor.

In this computer, when the style sheet processor 31 is activated, a screen for reading the BML file 20 to be converted is displayed.

From this screen, the BML file 2 to be converted
When 0 is specified, the style sheet processor 31 reads the BML file 20 (S101 in FIG. 4).

The style sheet processor 31 having read the BML file 20 analyzes the contents of the BML file 20 (S102), and the style sheet 24 as shown in FIG.
Extracted, CSS21, script 22, body tag 23
The conversion process is performed in three parts.

When the CSS 21 is detected in the style sheet 24, the style sheet processor 31 inputs the CSS 21 into the corresponding processing class of the Java program 25 (S103).

The corresponding processing class of the Java program 25 analyzes the contents of the input CSS21 (S10).
4) Convert to HTML format.

When the script 22 is detected in the style sheet 24, the style sheet processor 31
The script 22 is input to the corresponding processing class of the Java program 25 (S105).

The corresponding processing class of the Java program 25 analyzes the content of the input script 22 (S10).
6) Convert to HTML format.

Further, the style sheet processor 31
Analyzes the body tag 23 of the style sheet 24 and
It is converted into an ML tag (S107).

At this time, if the data of the style attribute exists in the body tag 23, the style sheet processor 31
J that analyzed CSS21 data of each style attribute
Input to the corresponding processing class of the ava program 25 (S
108).

When the style sheet processor 31 receives the style attribute data from the style sheet processor 31, the relevant processing class of the Java program 25 analyzes the style attribute from the style attribute data (S109) and merges it into the CSS 21 to create a new style attribute. It is output in the HTML tag (S110).

As a result of analyzing the body tag 23, when the style call processor 31 detects a script call location in the tag, the style sheet processor 31 sets the script call location to J
Input to the corresponding processing class of the ava program 25 (S
111).

The corresponding processing class of the Java program 25 converts the input information of the script calling portion and inserts it into the HTML, and also converts the converted script into the H
Output to TML (S112).

As described above, according to the computer of this embodiment, the style sheet processor 31 uses the style sheet 24 of the BML file 20 as a base, and
When S21, script 22 and body tag 23 are detected,
The body tag 23 is converted into an HTML corresponding tag by itself, and the CSS 21 and the script 22 are Java.
Since the HTML file is generated by merging the returned contents with the tags by inputting them into the program 25 and converting them, the CSS 21 of the BML file 20, the script 2
2. All the body tags 23 can be converted into the HTML format at once, and the efficiency of file conversion can be improved.

In other words, by subscribing the Java program 25 to the part that cannot be processed by the general-purpose style sheet processor 31, the BML → HTML conversion can be realized at a relatively low cost.

Next, a modification of the above embodiment will be described with reference to FIG. In the above embodiment, an example of a stand-alone computer in which the input / output of the file is the local input / output has been described.
It is an example of a service providing system, such as a file conversion system, in which both outputs are via a network.

As shown in FIG. 6, this file conversion system includes a plurality of computers such as a BML server 6.
1, an ASP server 62, a client PC 63, etc. are connected via a network such as the Internet.

In the case of this file conversion system, BML
The server 61 stores and manages program contents for BS digital broadcasting as BML files.

Further, the ASP server 62 publishes a site for providing services on the Internet, performs procedures such as user authentication of the client PC 63 that has accessed this site, and then browses the desired program content from the client PC 63. Accepts a request (file request), transfers the file request to the BML server 61,
The BML file sent from the BML server 61 is set to H
It is converted to a TML file and the program content is distributed to the client PC 63 of the corresponding user via the Internet.

The client PC 63 is installed with Internet browsing software such as a browser, accesses the site of the ASP server 62 from the screen of the browser, and after user authentication by inputting a user name, password, etc., the program content is displayed. From the selection screen,
A file request is issued to the ASP server 62 by selecting and operating the desired program content.

Thus, if the BML file created for the BS digital broadcasting is stored as the program content in the BML server 61, the HTM for the file request from the client PC 63 through the Internet.
The program content can be browsed after being converted to the L format. That is, the BML file and HTM are stored
It is not necessary to store and manage the program content in the two formats of the L file, and it is possible to improve the efficiency in managing the program content and as the disk space.

The present invention is not limited to the above embodiment. In the above embodiment, a general-purpose style sheet processor 22 is used.
Dedicated software integrated with the va program 25 may be created.

Software in the above-described embodiment (style sheet processor 22 and Java program 25)
May be stored in a computer-readable storage medium such as a flexible disk, or may be transmitted as software (program) alone. In this case, the computer reads the software (program) stored in the storage medium, or the LAN
The processing in each embodiment can be performed by downloading and installing from a site (server) on the Internet.

That is, the software (program) in the present invention is not limited to the one stored in the storage medium independent of the computer, but includes the one distributed through a transmission medium such as LAN or Internet.

As the storage medium, in addition to the above flexible disk, for example, a magnetic disk, an optical disk (C
If the storage medium is a computer-readable storage medium capable of storing a program, such as a D-ROM, a CD-R, a DVD), a magneto-optical disk (MO, etc.), a semiconductor memory, etc., the storage format is in any form. May be.

An OS (operating system) running on the computer based on the instructions of the program installed in the computer from the storage medium.
Alternatively, database management software, MW (middleware) such as network software, or the like may execute a part of each processing for realizing the present embodiment.

Furthermore, the storage medium is not limited to a medium independent of the computer, but includes a storage medium in which a program transmitted via a LAN or the Internet is downloaded and stored or temporarily stored. Further, the number of storage media is not limited to one, and the case where the processing in the present embodiment is executed from a plurality of media is also included in the recording medium of the present invention, and the media configuration may be any configuration.

The computer executes each process in the present embodiment based on the program stored in the storage medium, and is a device such as a personal computer or a system in which a plurality of devices are network-connected. Any configuration such as

The computer is not limited to a personal computer, but also includes an arithmetic processing unit and a microcomputer included in information processing equipment, and is a generic term for equipment and devices capable of realizing the functions of the present invention by a program. .

[0052]

As described above, according to the present invention, B
The style sheet is read from the first file generated in ML format, the cascading style sheet, script, and tags are acquired, each is analyzed separately, and HT
Since the ML style attribute, the script, and the tag are converted, and these are merged and the second file in the HTML format is output, the data conversion from BML to HTML can be efficiently performed. By establishing the technology for converting data from BML to HTML in this way, it is possible to realize a service that provides a user with a request from the Internet for program content for BS digital broadcasting generated in the BML format.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a computer according to an embodiment of the present invention.

FIG. 2 is a diagram showing the contents of a BML file to be converted.

FIG. 3 is a diagram showing a software configuration in this computer.

FIG. 4 is a flowchart showing a file conversion operation of this computer.

FIG. 5 is a diagram showing an example of implementation of a file conversion service using this computer.

FIG. 6 is a diagram showing a configuration of a file conversion system of a modified example of the above embodiment.

[Explanation of symbols]

1 ... computer, 22 ... style sheet processor,
25 ... Java program, 61 ... BML server, 62
... APS server, 63 ... Client PC.

Claims (5)

[Claims] 1. In a file conversion system that receives a file request from a user via the Internet and provides the file to the user who made the request, a file storage unit that stores a first file generated in BML format, In response to a file request from the user, the corresponding BML format first file in the file storage means is
A file conversion system, comprising means for converting to a second file in HTML format and delivering it to the requesting user via the Internet. 2. A computer for converting a first file generated in BML format into a second file in HTML format, in which a style sheet is read from the first file, and cascading style sheets, scripts, and tags are read. A second file that merges the acquired cascading style sheet, script, and tag, and converts the acquired cascading style sheet, script, and tag into the HTML style attribute, script, and tag, and the converted style attribute, script, and tag. And a means for outputting. 3. A program for causing a computer to execute a process for converting a first file generated in BML format into a second file in HTML format, wherein the computer reads a style sheet from the first file. , Cascading style sheets,
A means to acquire the script and the tag, a method to analyze the acquired cascading style sheet, the script and the tag and convert them to HTML style attributes, scripts and tags, and merge the converted style attributes, the scripts and the tags. A program for functioning as a means for outputting the second file. 4. A file conversion method in which a computer receives a file request from a user through the Internet and provides the file to the requesting user, and the file is stored in a file storage unit according to the file request received by the computer from the user. Of the corresponding BML format first file in the
A method of converting a file, comprising: converting into a second file of a format; and delivering the converted second file to the requesting user through the Internet by the computer. 5. A file conversion method for converting a first file generated in BML format into a second file in HTML format, wherein a style sheet is read from the first file, and a cascading style sheet, a script, The step of acquiring the tag, the step of analyzing the acquired cascading style sheet, script, and tag and converting into the HTML style attribute, script, and tag, and merging the converted style attribute, script, and tag And a step of outputting the file.