KR100379572B1 - A real-time mobile markup language translating system and a method automatically - Google Patents

Abstract

The present invention relates to a wireless terminal language real-time automatic conversion system and automatic conversion method. According to an aspect of the present invention, there is provided a mobile terminal comprising: a terminal detecting unit configured to automatically detect a browser of a corresponding wireless terminal and detect a terminal language that the browser can recognize when receiving a document request from a wireless terminal; A document request unit which checks document information included in the requested document, checks whether the corresponding document exists in the cache, and requests an original document; A cache manager for storing and managing newly generated documents or converted documents; A conversion manager for converting the original document according to the form of the browser; And an output unit for outputting the converted document to the wireless terminal.

The present invention allows a user to be provided with a content service produced in various wireless terminal languages, regardless of the type of wireless terminal, to enable the wireless content provider to reduce the content production cost, rather than the indirect conversion method based on XML It is possible to provide a direct conversion method of a wireless terminal language that has a high conversion speed and requires a small capacity when loading a wireless terminal.

Description

Wireless terminal language real-time automatic conversion system and automatic conversion method {A REAL-TIME MOBILE MARKUP LANGUAGE TRANSLATING SYSTEM AND A METHOD AUTOMATICALLY}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to wireless terminal language conversion, and more particularly, to a real-time automatic conversion system and conversion method between terminal languages for recognizing documents produced in various types of wireless terminal languages.

Recently, a wireless terminal is equipped with a WAP (Wireless Application Protocol) browser that can access the Internet so that a user can search and use various contents. When the user executes the wireless browser of the wireless terminal, the item request signal selected by the user is converted into a protocol that can be connected to the Internet by a WAP gateway and requests access to a WAP server. The swap server is connected to an Internet server providing various information and a wireless terminal capable of receiving information provided by the Internet server, and converts heterogeneous data and heterogeneous protocols between the Internet server and the wireless terminal. Information may be provided to the wireless terminal.

Hereinafter, a conventional method for automatically converting a wireless terminal language will be briefly described with reference to the accompanying drawings.

1A to 1C are diagrams illustrating a conventional automatic conversion system of a wireless terminal language.

In general, the wireless Internet service method is largely divided into a WAP method through a swap gateway and a ME method without a swap gateway. Wireless terminal languages for supporting WAP services include HDML and WML, and wireless terminal languages for supporting ME services include mHTML, cHTML, and sHTML. Terminal companies will be equipped with a browser that supports the wireless Internet in a wireless terminal according to a standard selected by a mobile carrier.

As shown in FIG. 1A, among the wireless terminals adopting the WAP method, a wireless terminal 10 equipped with an HDML browser, a wireless terminal 11 equipped with a WML browser, and a wireless terminal 12 equipped with an mHTML browser are provided to the user. By receiving the URL (Uniform Resource Locator, URL hereinafter) is connected to the web server 30 to provide a document produced in HDML via the swap gateway 20. The web server 30 delivers the document produced in the requested HDML to the swap gateway 20. At this time, the wireless terminal 10 equipped with the HDML browser can receive contents provided by the web server 30, but the wireless terminal 11 equipped with the WML browser and the wireless terminal 12 equipped with the mHTML browser are provided. The provided document cannot be checked on the terminal. FIG. 1B illustrates a case in which the web server 31 provides a document produced in WML, and FIG. 1C illustrates a case in which the web server 32 provides a document produced in mHTML. If the browser format is different, the provided document cannot be checked on the terminal.

As various wireless terminal languages exist, a content provider needs to produce contents in various wireless terminal languages in order to serve the same contents to multiple wireless terminals, thereby increasing the content production cost. There is a problem in that limited services are received depending on the type of embedded browser.

In addition, there is a wireless terminal language conversion method based on XML (XML: eXtensible Markup Language), which uses an indirect conversion method that converts an original document into XM L and converts the converted XM L document back to a target document. There is a problem that data conversion speed is slow. In addition, since the wireless terminal must include at least two converters such as an X-Ml converter and a target language converter, there is a problem in that the size of the wireless terminal is increased.

In order to solve this problem, the technical problem to be achieved by the present invention is to enable the user to receive content services produced in a variety of wireless terminal languages, regardless of the type of wireless terminal.

In addition, there is another purpose to enable the wireless content provider to reduce the content production cost.

Another object of the present invention is to provide a direct conversion method of a wireless terminal language that requires a smaller capacity when a wireless terminal is loaded and has a faster conversion speed than an XM-based indirect conversion method.

1A to 1C are diagrams illustrating a conventional automatic conversion system of a wireless terminal language.

2 is a block diagram illustrating a wireless terminal language real-time automatic conversion system according to a first embodiment of the present invention.

3 is a block diagram illustrating in detail the wireless terminal language converter of FIG.

4 is a flowchart illustrating a method for automatically converting a wireless terminal language according to the first embodiment of the present invention.

5A to 5D are diagrams illustrating input grammars of HDM documents of the conversion management module of FIG.

FIG. 6 is a diagram illustrating a parsing table for the grammar of FIG. 5 generated through the parser maker of FIG. 3.

7A to 7C are diagrams showing examples of documents converted into EAST and MMT generated by the grammar of FIG. 5 for HDM documents.

8 is a flowchart illustrating a method of configuring an EAST generated by a parser.

9 is a block diagram illustrating a wireless terminal language automatic conversion system according to a second embodiment of the present invention.

10 is a block diagram illustrating in detail the wireless terminal language converter of FIG.

Wireless terminal language real-time automatic conversion system according to one feature of the present invention for achieving the above object,

When one or more wireless terminals request one or more documents from a swap gateway through a wireless network, the wireless terminal language conversion system receives the document request information from the swap gateway and provides the documents to the wireless terminal,

A terminal detecting unit which detects a terminal language that the browser can recognize by automatically detecting a browser of the wireless terminal when receiving a document request from the wireless terminal;

A document request unit which checks document information included in the requested document, checks whether the corresponding document exists in the cache, and requests an original document;

A cache manager for storing and managing newly generated documents or converted documents;

A conversion manager for converting the original document according to the form of the browser;

Output unit for outputting the converted document to the wireless terminal

It includes.

Wireless terminal language real-time automatic conversion system according to another feature of the present invention,

When at least one wireless terminal transmits a document request signal to a swap gateway through a wireless network, the swap gateway transmits a document request signal from the wireless terminal through a network, and the document request signal is transmitted according to the document request signal transmitted through the network. A wireless terminal language conversion system for providing a,

A first server for automatically detecting a browser of the wireless terminal according to a document request from the wireless terminal, converting an original document according to the form of the browser, and outputting the converted document to the wireless terminal;

It includes.

Wireless terminal language real-time automatic conversion system according to another feature of the present invention,

When a document request signal is transmitted through a wireless network, a wireless terminal language conversion system that receives a requested document from a web server providing a document corresponding to one or more wireless terminal languages through a network through a swap gateway,

One browser is installed, and when the user wants to request a document, the browser automatically detects the browser and requests the desired document from the web server, receives the target document provided by the web server, and retrieves the original document according to the form of the browser. Wireless terminal that converts and outputs the converted document

It includes.

Wireless terminal language real-time automatic conversion method according to another feature of the present invention,

When at least one wireless terminal is transmitted to a swap gateway that has received a document request signal transmitted through a wireless network, the swap gateway transmits a document request signal from the wireless terminal through a network, and a document request signal transmitted through the network. According to the wireless terminal language conversion method using a wireless terminal language conversion system for providing a document according to,

Detecting a terminal language of the wireless terminal that has requested the current document, and requesting a document corresponding to the detected terminal language;

Receiving a document transmitted according to a document request and converting the document into a document corresponding to the detected terminal language; And

Outputting the converted request document to the wireless terminal;

It includes.

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

2 is a block diagram illustrating a wireless terminal language real-time automatic conversion system according to a first embodiment of the present invention.

As shown in FIG. 2, a wireless terminal language real-time automatic conversion system according to a first embodiment of the present invention includes a wireless terminal 100 capable of transmitting and receiving messages while moving; A swap gateway 200 for converting a signal transmitted from the wireless terminal 100 into a Transmission Control Protocol / Internet Protocol (TCP / IP) protocol or converting a TCP / IP protocol into a WAP protocol that can be transmitted to the wireless terminal; A wireless terminal language converter 300 for converting a wireless terminal language transmitted from the wireless terminal 100 each having a different browser into a wireless terminal language corresponding to each wireless terminal 100; It includes a web server for providing a wireless terminal service including one or more contents to the wireless terminal 100.

The wireless terminal 100 includes a wireless terminal 110 equipped with an HDML browser; A wireless terminal 120 equipped with a WML browser; It is divided into a wireless terminal 130 equipped with an mHTML browser.

Web server HDML web server for providing documents in HDML (400); A WML web server 410 for providing documents in WML; It includes an mHTML web server 420 for providing documents in mHTML.

3 is a block diagram illustrating in detail the wireless terminal language converter of FIG.

As shown in FIG. 3, when the wireless terminal language converter 300 receives a document request from the wireless terminal 100, the wireless terminal language converter 300 automatically detects a browser of the terminal to detect a terminal language that the browser can recognize. ); A document request module 320 for checking the head of the requested document to check whether the document exists in the cache, and requesting the original document from the corresponding UAL if the document is missing or changed; A cache management module 330 for storing and managing newly generated documents or converted documents; A conversion management module 340 for converting an original document according to a browser format; And an output module 350 for outputting the converted document to the wireless terminal 100.

In the conversion management module 340, a grammar (wml.gr, hdml.gr, mhtml.gr) 341, which formally describes a syntax structure of an input wireless terminal language in a context-free grammar, is parser generator 342. If input to, the parser generator 342 generates a parsing table (wml.tbl, hdml.tbl, mhtml.tbl) 343 that determines the parsing behavior of the parser 344 according to the grammar. The parser 344 uses the generated parsing table 343 to receive a document obtained from the document request module 320 as an input in a bottom-up manner, and analyzes the token of a small meaningful unit from a scanner. Extended Abstract Syntax Tree) 345 is generated as an intermediate expression. The markup language generator 346 receives the EAST 345 and receives information about the target terminal language that the terminal can recognize from the terminal sensing module 310 to generate the target terminal language. The generated target terminal language is output to the wireless terminal 100 via the output module 350, and is sent to the cache management module 330 to provide a quick conversion result when the re-search request of the document.

Hereinafter, the operation of the wireless terminal language real-time automatic conversion system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

4 is a flowchart illustrating a method for automatically converting a wireless terminal language according to the first embodiment of the present invention.

5A to 5D are diagrams illustrating input grammars of HMD documents of the conversion management module of FIG. 2, and FIG. 6 is a diagram illustrating a parsing table for grammars of FIG. 5 generated by the parser builder of FIG. 7A to 7C are diagrams showing examples of documents converted into EAST and MMT generated by the grammar of FIG. 6 for HDM documents.

As shown in FIG. 4, the user turns on the mobile terminal to execute the swap browser. The user inputs a URL (Uniform Resource Locator) of a website to be accessed on the screen of the mobile terminal (S100). The wireless terminal 100 transmits a document request signal to the web server of the corresponding URL requested by the user (S110). The document request signal transmitted through the wireless network (not shown) is transmitted to the swap gateway 200, and the swap gateway 200 transmits the document request signal to the wireless terminal language converter 300 through the internet (not shown). do. The terminal detection module 310 detects the browser information of the wireless terminal 100 through HTTP_USER_AGENT and HTTP_ACCEPT variables, which are environment variables of Hyper Text Transfer Protocol (HTTP) (S120), and the wireless terminal 100 which has requested the current document is not used. It is determined whether the wireless terminal 100 is equipped with a browser. The cache management module 330 searches and determines whether the target document of the corresponding UAL is stored in the cache (S130). If the destination document of the corresponding URL is not stored in the cache, the cache management module 330 determines whether the original document of the relevant URL is stored in the cache (S140). The cache management module 330 calls the document request module 320 when the original document is not stored. The document request module 320 requests the original document of the corresponding URL to the web server 400 (S150). The web server 400 searches for the original document of the requested document and transmits the original document according to the search result (S160). The document request module 320 receives the original document and stores it in the cache (S170).

The document request module 320 calls the conversion management module 340 to convert the format of the request document into a document format that can be recognized by the wireless terminal 100. The transformation management module 340 receives the context-free syntax of the HDML as shown in FIG. 5 to parse the HDML document.

5 illustrates an HDML grammar designed to form an EAST form according to a grammar structure. A meaningful terminal becomes a name or constant with a token value and becomes a terminal node of EAST. The node name combined with the meaningful generation rule becomes the nonterminal node of the EAST and is designed to form a specific type of EAST. The parser generator 342 receives the received context-free grammar and generates a parsing table 343 as shown in FIG. The parser 344 receives the original HDML document transmitted through the document request module 320 in a bottom-up manner using a parsing table 343 as shown in FIG. 6, and receives a meaningful token from the scanner. The parser 344 analyzes the syntax to generate an EAST 345 of the original document as shown in Figs. 7A to 7C (S180). The structure of the EAST 345 uses a left-son / right-brother method as shown in FIG. 7B, and the left link points to a son node, and the right link points to a brother node.

How to configure the EAST in the parsing process is to receive a meaningful token from the scanner as shown in Fig. 8 (S300), refer to the LR parsing table for each token (S310) whether the value (Entry) of the parsing table is greater than zero, that is, In step S320, it is checked whether a value of the parsing table indicates a shift. If the value of the parsing table indicates a shift, it is checked whether there is a meaningful token (S330), and if it is a meaningful token, a terminal node is made (S340). In step S320 of checking the value of the parsing table, if the value of the parsing table does not indicate a shift, it is determined whether the value of the parsing table is smaller than 0 (S360), and if the parsing table is smaller than 0, that is, the parsing table When representing this reduce, it is checked whether the corresponding generation rule is reduced to the start generation rule, and when it is reduced, parsing is finished (S370). If it is not reduced, only the nodes created so far are combined together to form a subtree when reducing to a meaningful generation rule (S380). If the value of the parsing table is 0, it means an error and the next token is read (S390) to continue parsing.

The markup language generator 346 receives the generated EAST 345 as an input and operates a tree, and based on the information about the user's wireless terminal 100 passed by the terminal detection module 310, the corresponding wireless terminal. In operation S190, the object document 100 may be recognized. The cache management module 330 stores the generated object document in the cache (S200). The output module 350 receives the target document generated through the cache management module 330 and outputs the converted result to the corresponding wireless terminal 100 (S210). The converted result is transmitted to the swap gateway 200, the swap gateway 200 transmits the output conversion result to the corresponding wireless terminal, and the user checks the conversion result through the wireless terminal 100 (S220).

FIG. 9 is a block diagram illustrating a wireless terminal language automatic conversion system according to a second embodiment of the present invention, and FIG. 10 is a block diagram illustrating the wireless terminal language converter of FIG. 9 in detail.

The wireless terminal language automatic conversion system according to the second embodiment of the present invention is denoted by the same reference numerals as the wireless terminal language automatic conversion system of the first embodiment of the present invention. Hereinafter, the description of the same parts as the first embodiment of the present invention will be described. Is omitted.

The second embodiment of the present invention is related to the case where the wireless terminal language converter 300 is mounted in the wireless terminal 100. For example, when a wireless terminal language converter 300 is mounted on a wireless terminal 110 equipped with an HDML browser and requests a desired document, a web server 420 providing a document produced in mHTML is required by a user. Provide documentation. The wireless terminal 110 with the wireless terminal language converter 300 and the HDML browser receives an mHTML document, and the wireless terminal language converter 300 can recognize the corresponding terminal through the same process as in the first embodiment. A document converted into HDML, which is a target terminal language, may be provided. In this case, as shown in FIG. 10, when the wireless terminal language converter 300 is applied to each of the wireless terminals 110, 120, and 130, since the language conversion should be performed within the limited memory area of the wireless terminal 100, the terminal sensing module, No document request module or cache management module is required. In addition, since parsing the terminal language requires a lot of memory space in the process of generating the EAST, the second embodiment of the present invention directly converts the language into the target terminal language using the grammar-directed conversion method without generating the EAST. Do this. The grammar-directed conversion method performs language conversion easily in a small memory space by writing semantic execution code suitable for the generation rule according to the input grammar structure.

The present invention is not limited to the embodiments, of course, many variations and modifications can be made to the components of the present invention without departing from the gist of the present invention.

As described above, in the wireless terminal language real-time automatic conversion system and automatic conversion method of the present invention, a user may be provided with a content service produced in various wireless terminal languages regardless of the type of wireless terminal.

In addition, wireless content providers can reduce content production costs, provide faster conversion speed than XML-based indirect conversion method, and provide a direct conversion method of wireless terminal language requiring small capacity when loading wireless terminal. Can be.

Claims (12)

In the wireless terminal language conversion system, if one or more wireless terminals request one or more documents from the swap gateway through a wireless network, receiving document request information from the swap gateway and providing the documents to the wireless terminals, A terminal detecting unit which detects a terminal language that the browser can recognize by automatically detecting a browser of the wireless terminal when receiving a document request from the wireless terminal; A document request unit which checks document information included in the requested document, checks whether the corresponding document exists in the cache, and requests an original document; A cache manager for storing and managing newly generated documents or converted documents; A conversion manager for converting the original document according to the form of the browser; Output unit for outputting the converted document to the wireless terminal Wireless terminal language real-time automatic conversion system comprising a. The method of claim 1, wherein the conversion management unit A parser generator configured to generate a parsing table according to the grammar when a standardized grammar for the terminal language of the wireless terminal is input; A parser for receiving a document received from the document requesting unit using the generated parsing table and generating an extended syntax tree as an intermediate expression; The markup language generator which receives the extended syntax tree, receives information about the target terminal language that can be recognized by the terminal from the terminal sensor, and generates the target terminal language. Wireless terminal language real-time automatic conversion system comprising a. When at least one wireless terminal transmits a document request signal to a swap gateway through a wireless network, the swap gateway transmits a document request signal from the wireless terminal through a network, and the document request signal is transmitted according to the document request signal transmitted through the network. In the wireless terminal language conversion system providing a, A first server for automatically detecting a browser of the wireless terminal according to a document request from the wireless terminal, converting an original document according to the form of the browser, and outputting the converted document to the wireless terminal; Wireless terminal language real-time automatic conversion system comprising a. The method of claim 3, wherein the first server A terminal detecting unit which detects a terminal language that the browser can recognize by automatically detecting a browser of the wireless terminal when receiving a document request from the wireless terminal; A document request unit which checks document information included in the requested document, checks whether the corresponding document exists in the cache, and requests an original document; A cache manager for storing and managing newly generated documents or converted documents; A conversion manager for converting the original document according to the form of the browser; Output unit for outputting the converted document to the wireless terminal Wireless terminal language real-time automatic conversion system comprising a. The method of claim 4, wherein the conversion management unit A parser generator configured to generate a parsing table according to the grammar when a standardized grammar for the terminal language of the wireless terminal is input; A parser for receiving a document received from the document requesting unit using the generated parsing table and generating an extended syntax tree as an intermediate expression; The markup language generator which receives the extended syntax tree, receives information about the target terminal language that can be recognized by the terminal from the terminal sensor, and generates the target terminal language. Wireless terminal language real-time automatic conversion system comprising a. When the document request signal is transmitted through a wireless network, a wireless terminal language conversion system receiving a requested document from a web server providing a document corresponding to one or more wireless terminal languages through a network through a swap gateway, One browser is installed, and when the user wants to request a document, the browser automatically detects the browser and requests the desired document from the web server, receives the target document provided by the web server, and retrieves the original document according to the form of the browser. Wireless terminal that converts and outputs the converted document Wireless terminal language real-time automatic conversion system comprising a. The method of claim 6, wherein the wireless terminal is A conversion manager for converting the original document according to the form of the browser; And Output section for outputting the converted document Wireless terminal language real-time automatic conversion system comprising a. The method of claim 7, wherein the conversion management unit A parser generator configured to generate a parsing table according to the grammar when a standardized grammar for the terminal language of the wireless terminal is input; A parser for directly converting language into a target terminal language through a grammar / directive conversion method using the generated parsing table. Wireless terminal language real-time automatic conversion system comprising a. When at least one wireless terminal is transmitted to a swap gateway that has received a document request signal transmitted through a wireless network, the swap gateway transmits a document request signal from the wireless terminal through a network, and a document request signal transmitted through the network. In the wireless terminal language conversion method using a wireless terminal language conversion system for providing the document according to, Detecting a terminal language of the wireless terminal that has requested the current document and requesting a document corresponding to the detected terminal language; Receiving a document transmitted according to a document request and converting the document into a document corresponding to the detected terminal language; And Outputting the converted request document to the wireless terminal; Wireless terminal language real-time automatic conversion method comprising a. 10. The method of claim 9, wherein the requesting document step Detecting browser information of the wireless terminal through an environment variable; Determining a browser embedded in the wireless terminal that has requested the current document; Retrieving whether the destination document of the corresponding UAL is stored in the cache; If the object document of the corresponding UAL does not exist in the cache, searching whether the original document of the UAL is stored in the cache; If the original document does not exist, requesting the original document of the UAL to the web server and receiving the original document; Receiving the received original document and storing it in the cache Wireless terminal language real-time automatic conversion method comprising a. The method of claim 9, wherein the document conversion step is Generating a parsing table based on a formal syntax structure grammar of the original document; Receiving, by a parser, an original document transmitted using the parsing table and handing over a meaningful token from a scanner; Parsing, by the parser, to generate an extended extraction grammar tree of the original document; Receiving the generated extracted grammar tree, and generating an object document that can be recognized by the wireless terminal based on the information on the wireless terminal; Storing the generated target document in a cache Wireless terminal language real-time automatic conversion method comprising a. The method of claim 9, wherein the document conversion step is According to an input grammar structure, a method for automatically converting a terminal language to a real time by writing a semantic execution code suitable for a generation rule and easily performing a language conversion in a small memory space to directly perform a language conversion into a target terminal language.