KR20020044301A - Document Conversion System For Mobile Internet Contents And Vioce Internet Contents Service Method Using The System - Google Patents

Abstract

The present invention provides a document conversion system for wireless Internet content that converts WML content supported by a Wireless Application Protocol (WAP) method into voice XML (eXtensible ML) content so that Internet content services can be provided to general wired and wireless telephone users. The present invention relates to a voice internet content service method using a system. In the related art, the Internet content service can be provided only through a WAP dedicated mobile terminal. In the case of such a dedicated mobile terminal, only a small display screen is supported to limit the expression of content information. In addition, there was a disadvantage in that it is inconvenient to view the contents desired by the user.

Accordingly, the present invention automatically converts WML (Wireless Markup Language) content, which is wireless Internet content, into voice XML content according to a specific conversion rule, thereby providing a wireless Internet service to a general wired / wireless telephone user, not a mobile terminal dedicated to WAP. In the case of an Internet content provider, it is possible to provide a voice service without having to reconstruct the content into a voice XML document.

In addition, the present invention can ensure the scalability of the Internet service by defining a conversion rule in the form of a script for the same content written in XML, HTML (HyperText ML), XHTML.

Description

Document Conversion System for Wireless Internet Content and Voice Internet Content Service Method Using the System {Document Conversion System For Mobile Internet Contents And Vioce Internet Contents Service Method Using The System}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to document conversion for wireless Internet content, and more particularly, converts WML (Wireless Markup Language) content supported by a Wireless Application Protocol (WAP) method into voice XML (eXtensible Markup Language) content, thereby allowing Internet users to use The present invention relates to a document conversion system for providing wireless Internet content and a voice internet content service method using the system.

There are two types of scripts provided by the rapidly increasing wireless Internet, the HDML (Handheld Device Markup Language) language and the m-HTML language. Among them, the HDML language has been developed into the WML language, which is divided into WML (HDML). Languages and m-HTML languages are being integrated into the XML language.

In addition, the WML language is adopted in the WAP method developed to reduce the processing burden on the terminal side, and the m-HTML language is adopted in the ME method developed to easily secure the content. Is not activated compared to the WAP method.

In addition, the XML language is a web language published by the World Wide Web Consortium (W3C), a web language standardization organization. It can build a homepage without using complicated programs, improve search functions, and provide client systems that are essential for business. Since it has a function of facilitating complex data processing, its use is gradually increasing.

Meanwhile, the wireless Internet service provided by the conventional WAP method requires a dedicated mobile terminal having a WAP protocol stack and a WAP browser in order to provide content, wherein the wireless Internet content provided by the WAP is a deck. Information is displayed on the LCD screen of the mobile terminal by using the concept of and a card, and the movement between the cards and selection of specific items are performed by using the buttons of the mobile terminal.

In other words, a card is one or several conversations between a user and a mobile terminal. For example, a card can be viewed as a card for selecting from a menu or entering text. By moving from, you get or provide the information you want, and these cards come together to form the same deck as an HTML page.

In addition, in order to support wireless Internet services provided by WAP, a WAP protocol stack, a WAP browser, a WAP gateway, and a web server providing WML contents are required. The mobile terminal requests specific contents according to a user's request. It is requested to the server through the gateway, and the response is sent to the WAP browser.

Accordingly, the mobile terminal displays the WML content, which is the received response, on the LCD screen. In this case, the transmission unit of the provided WML content is a deck, and the unit displayed at once on the LCD screen of the mobile terminal is a card. It becomes a unit.

As described above, the conventional wireless Internet service mainly uses the WAP method, and the WAP type wireless Internet service must provide a mobile terminal and a software environment that provide a function conforming to the specification of a wireless application environment (WAE).

Therefore, in the case of a conventional wireless telephone or a landline telephone user only for a voice call, the Internet service could not be provided unless a new mobile terminal equipped with a WAP browser was newly replaced.

In addition, even when using a dedicated mobile terminal equipped with a WAP browser to support contents written in WML, it supports only a small display screen, thereby limiting the expression of content information and viewing the content desired by the user. There is a disadvantage in that it is inconvenient, and there is a problem in providing a dynamic application through collecting information of a user.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to wirelessly convert WML content, which is wireless Internet content, to voice XML content according to a specific conversion rule, thereby making it possible to wirelessly connect to a general wireless / wireless telephone user who is not a mobile terminal dedicated to WAP. In addition to providing an Internet service, an Internet content provider can provide a voice service without reconfiguring content into a voice XML document.

In addition, another object of the present invention is to ensure the scalability of the Internet service by defining a conversion rule in the form of a script for the same content written in XML, HTML, XHTML.

1 is a block diagram of a document conversion system for wireless Internet content according to the present invention;

FIG. 2 is a detailed block diagram of the document conversion unit in FIG. 1; FIG.

3 is a flowchart illustrating a voice internet content service procedure using a document conversion system according to the present invention.

4 is a diagram illustrating a mapping between a WML tag and a speech XML tag according to a conversion rule of the present invention.

5 illustrates an example of converting a WML document into a speech XML document according to the present invention.

Explanation of symbols on the main parts of the drawings

10: web server 20: speech processing server

21: content call processing unit 22: content calling unit

23: document conversion unit 23-1: XML analysis unit

23-2: XSL processing unit 24: Document analysis unit

A feature of the present invention for achieving the above object is a web server for providing predetermined WML content; Converting the document for the wireless Internet content including a voice processing server that calls the WML content from the web server and converts it into a voice XML document and interprets the converted voice XML document to provide Internet content in the form of voice to a general telephone user. To provide a system.

The voice processing server may include: a content call processing unit which receives a call requesting a wireless Internet service from a general telephone; A content caller for calling a WML document, which is wireless Internet content, from a corresponding web server according to a wireless Internet service request call received by the content call processor; A document converter which receives the WML document from the content caller and converts the WML document into a voice XML document according to a predetermined conversion rule; And a document interpreter for interpreting the voice XML document converted by the document converter to provide Internet content in the form of voice to a general telephone user.

The document converting unit may include an XML analyzing unit which analyzes a WML document called from a web server and delivers the analyzed content; After receiving the analysis content from the XML analysis unit generates a source tree for the conversion of the WML document, and comprises a XSL processing unit for constructing a result tree according to a predetermined conversion rule to convert to a voice XML document, Web server or WAP Characterized in that implemented in the gateway.

Another feature of the present invention includes the steps of calling a WML document from a web server for providing wireless Internet content required by a regular telephone; Converting the WML document into a speech XML document according to a predetermined conversion rule; The present invention provides a voice internet content service method using a document conversion system including interpreting the voice XML document and providing voice content to the general telephone user.

In this case, the process of converting the WML document into a voice XML document may include analyzing a WML document called from a web server; Generating an original tree for converting the WML document using the analysis contents; And converting the original tree into a speech XML document by constructing a result tree according to a conversion rule expressed in the form of an XSL script.

The conversion rule maintains an input / output order of a WML document, wherein the WML document applies a card, and the voice XML document uses a dialog, which is a conversation unit, as a navigation unit. It is characterized by converting to a speech XML document according to the speech XML tag mapped to the tag defined in the WML document by using the delete function.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the present invention, the WML content provided by the web server supporting the WAP service in a regular wired / wireless phone to fetch the WML content from the web server (VoiceXML) to enable the voice interface (VoiceXML) The document conversion system for the wireless Internet content according to the present invention for this purpose, as shown in Figure 1, the web server 10 for providing a predetermined WML content, and the corresponding web server 10 The voice processing server 20, which calls the WML content from the document and converts it into a voice XML document and provides it to the general telephone user in the form of a voice, has a structure that interoperates with each other.

Here, the speech processing server 20 includes a content call processor 21, a content caller 22, a document converter 23 and a document interpreter 24. 21 accepts a call requesting a wireless Internet service for a regular telephone user to receive predetermined wireless Internet content, and notifies the content caller 22, and the corresponding content caller 22 receives the content call processor. After connecting to the web server 10 supporting the corresponding wireless Internet contents according to the wireless Internet service request notification notified by 21, the document conversion unit is called by calling the WML document which is the wireless Internet contents from the web server 10. To 23.

The document conversion unit 23 converts the WML document received from the content calling unit 22 into a voice XML document according to the conversion rule and delivers it to the document analysis unit 24, and the document interpretation unit 24 converts the document. The wireless Internet content converted into the voice XML document by the unit 23 is analyzed to provide a wireless Internet content service in the form of voice to a general telephone user.

In addition, the document conversion unit 23 will be described in more detail. As shown in FIG. 2, an XML analysis unit 23-1 for recognizing an XML document and a conversion rule defined in XML are constructed. and an XSL processing unit 23-2 for applying a rule. The XML analyzing unit 23-1 analyzes the WML document called from the web server 10, and analyzes the contents of the analysis as XSL (eXtensible Stylesheet). Language), and the XSL processor 23-2 receives the content analyzed by the XML analyzer 23-1 and generates a source tree for converting the WML document. After generating, the resulting speech XML document is constructed by converting a result tree according to a conversion rule expressed in the form of an XSL script and transferred to the document interpreter 24.

In this case, the document conversion unit 23 may be located in a web server 10 or a WAP gateway that provides WML content, and converts a document using XSL technology used to define a style of an XML document proposed by the W3C. Do this.

The conversion rule defines a rule that maps a tag used in a WML document to a voice XML tag, and is largely divided into replacement, reorganization, and deletion. In this case, the input / output order of the WML document, which is the original document, and each document It should be applied considering the navigation unit of.

Referring to Figure 3 attached to the voice Internet content service procedure using the document conversion system according to the present invention configured as described above is as follows.

First, when a general telephone user sends a call requesting a wireless Internet content service in order to receive predetermined wireless Internet content (step S31), the content call processing unit 21 of the voice processing server 20 receives the call. The content calling unit 22 is notified of the request for the wireless Internet content service of the general telephone user.

Accordingly, the content caller 22 connects to the web server 10 that provides the wireless Internet content to be serviced by the general telephone user, that is, the web server 10 corresponding to the Internet content request call (step S32). The WML document, which is the wireless Internet content, is called from the web server 10 and transferred to the document converting unit 23 (step S33).

Then, the XML analysis unit 23-1 of the document conversion unit 23 analyzes the WML document received from the content calling unit 22, and then transfers the WML document analysis contents to the XSL processing unit 23-2. The XSL processor 23-2 generates an original tree for the conversion of the currently delivered WML document (step S34), and constructs a result tree according to the conversion rule expressed in the form of an XSL script to form a speech XML document. After the conversion, the data is transmitted to the document analysis unit 24 (step S35).

As a result, the document analyzing unit 24 interprets the voice XML document converted by the document converting unit 23 to provide wireless Internet content in the form of voice to the general telephone user (step S36).

Meanwhile, the above-described conversion rule maintains the input / output order of the WML document, the WML document applies a card, and the voice XML document applies a dialog (represented as a <form> or <menu>) as a navigation unit, but the user In consideration of the differences in the interface, the XSL processing unit 23-2 of the document conversion unit 23 applies the conversion, reconstruction, and deletion using the method of document conversion. Will be performed.

In addition, the conversion rule is defined for each tag defined in the WML document as shown in FIG. 4, and each tag is mapped to a speech XML tag according to its function.

As illustrated in the accompanying drawings through a series of conversion process, it is possible to provide a content service to a general telephone user by converting a WML document of (A) to a voice XML document such as (B). The content shown inside each block of the WML document is the card, and the full content of the a. In addition, 'C' in the voice XML refers to the content output to the general phone user, and 'H' refers to the content input by the general phone user.

As described above, in the present invention, by automatically converting content written in WML into voice XML content in a WAP-type wireless Internet service, a wireless Internet service can be provided to a general wired / wireless telephone user instead of a WAP-only mobile terminal. As a result, the Internet content provider can reduce the cost of reconstructing the content for the voice service.

In addition, the embodiment according to the present invention is not limited to the above, but can be implemented by various alternatives, modifications and changes within the scope apparent to those skilled in the art with respect to the present invention, for example In addition, by defining conversion rules in the form of scripts for documents written in XML, HTML, and XHTML, the extensibility of Internet services can be guaranteed.

As described above, the present invention automatically converts WML content, which is wireless Internet content, into voice XML content according to a specific conversion rule, thereby providing a wireless Internet service to a general wired or wireless telephone user who is not a mobile terminal dedicated to WAP. In the case of a content provider, a voice service can be provided without having to reconstruct the content into a voice XML document.

In addition, the present invention can ensure the scalability of the Internet service by defining the conversion rule in the form of a script for the content written in XML, HTML, XHTML.

Claims (8)

A web server for providing predetermined WML content; And a voice processing server for calling WML content from the web server, converting the WML content into a voice XML document, and interpreting the converted voice XML document to provide Internet content in a voice form to a general telephone user. Document conversion system for. The method of claim 1, The voice processing server includes: a content call processing unit which receives a call requesting a wireless Internet service from a general telephone; A content caller for calling a WML document, which is wireless Internet content, from a corresponding web server according to a wireless Internet service request call received by the content call processor; A document converter which receives the WML document from the content caller and converts the WML document into a voice XML document according to a predetermined conversion rule; And a document analyzer for interpreting the voice XML document converted by the document converter to provide voice content to a general telephone user. The method of claim 2, The document converting unit may include an XML analyzing unit which analyzes a WML document called from a web server and delivers the analyzed content; After receiving the analysis content from the XML analysis unit generates a source tree for the conversion of the WML document, and comprises a XSL processing unit for constructing a result tree according to a predetermined conversion rule to convert to a voice XML document Document conversion system for Internet content. The method of claim 2 or 3, And the document conversion unit is implemented in a web server or a WAP gateway. Calling a WML document from a web server providing wireless Internet content required by a normal telephone; Converting the WML document into a speech XML document according to a predetermined conversion rule; And interpreting the voice XML document to provide voice content to the general telephone user. The method of claim 5, The process of converting the WML document into a voice XML document may include analyzing a WML document called from a web server; Generating an original tree for converting the WML document using the analysis contents; And converting the original tree into a speech XML document by constructing a result tree according to a conversion rule expressed in the form of an XSL script. The method of claim 5 or 6, The conversion rule maintains an input / output order of a WML document, wherein the WML document uses a card, and the voice XML document uses a dialog, which is a conversation unit, as a navigation unit. . The method of claim 5 or 6, The WML document is converted into a voice XML document according to a voice XML tag mapped to a tag defined in the WML document using a function of replacement, reconstruction, and deletion. .