KR100862359B1 - System and storage medium for conversing contents according to network status - Google Patents

Abstract

A contents conversion system in accordance with a network state and a storage medium therefor are provided to offer converted contents suitable for a network state to a terminal user, thereby preventing quality deterioration and contents service delay for a contents user. A terminal information manager(120) stores and manages terminal information. A contents maker(130) makes one content into plural expression types. A contents converter(100) converts contents into one of the plural expression types based on a network state. A network state manager(110) monitors the network state connected with a terminal(160). The contents converter comprises an expression type including text, an expression type including the text and an image, an expression type including the text, the image, and an audio, and an expression type including the text, the image, the audio, and a video.

Description

Content conversion system according to network status and storage medium therefor {System and Storage Medium for Conversing Contents according to Network Status}

1 is an overall conceptual diagram of a content conversion system,

2 is a diagram illustrating a content expression table stored in a content producer;

3 is an internal configuration diagram of a content converter;

4A is a diagram illustrating a conversion rule table stored in a change rule DB in a content converter;

4b is a diagram illustrating a conversion rule table stored in a change rule DB in a content converter;

5 is a flowchart illustrating a content conversion procedure.

<Description of Symbols for Main Parts of Drawings>

100: Content Converter

110: network state manager

120: terminal information manager

130: Content Creator

140: content server

150: network

160: terminal

200: content expression table

300: conversion command unit

310: conversion rule DB

320: conversion engine

330: content receiving unit

340: content transmission unit

400: conversion rule table

The present invention relates to a content conversion system for providing a terminal with contents suitable for a wired or wireless network state. More specifically, when the terminal wants to receive content that requires a large bandwidth through a low bandwidth (BW) network, the content service delay and quality are converted by converting the same content into a content in a form suitable for the network condition. A content conversion system and a storage medium therefor in accordance with network conditions providing degradation protection.

With the development of terminal technologies such as mobile phones, PDAs, laptops, and network technologies such as the Internet, mobile communication networks, wireless LANs, and Bluetooth, multimedia content that requires high capacity and high quality is also required. ) Is developing into content. In order to satisfactorily service such content that requires a large capacity and high quality, the wired or wireless network connected to the terminal should have a large bandwidth.

However, in a situation in which a wired or wireless network condition worsens, such as a poor network having a small bandwidth, another mobile system having a small bandwidth, roaming, hand-off, and a decrease in wireless signal strength due to a decrease in wireless channel condition. A problem arises that a terminal user suffers from service delay and quality deterioration for content requiring large bandwidth. In addition, even if the wired or wireless network conditions are not bad, the same problem occurs that even if the terminal of the low specification does not receive high quality service. In particular, in the case of a mobile terminal, the effect of the network state is more severe. In addition, people who have traveled to foreign countries have a lot of time and quality deterioration in receiving content service even in the situation of accessing Korean content, which is mainly made up of large-capacity and multimedia contents, through a poor foreign network.

However, the prior art is to convert the content when the terminal is not capable of providing the content, based on the terminal specification and the information of the content, through the prior art, due to the deterioration of network conditions even in a high specification terminal Content service delays and quality deterioration problems cannot be solved.

In order to solve this problem, an object of the present invention is to provide a content conversion system that provides content users with converted content suitable for network conditions, thereby preventing content service delays and quality degradation.

Another object of the present invention is to provide the network provider (ISP) with the maximum efficiency of network utilization by transmitting the most suitable content over the network even under various conditions such as network conditions, terminal specifications, and the like.

Still another object of the present invention is to provide a content provider with a condition in which a variety of contents can be prepared to serve the contents to all users.

In order to achieve this object, according to an aspect of the present invention, when the terminal is connected to the wired or wireless network based on the content provided, the content conversion system for providing the converted content according to the network state, ( a) a terminal information manager for storing and managing terminal information; (b) a content producer for producing content in a plurality of representation types or bit rates suitable for a network state; (c) a content converter for converting the content into a representational content suitable for network conditions or a content of a suitable bit rate; (d) a network state manager for monitoring a network state to which a terminal is connected; And (e) a content server storing contents produced at a plurality of representation forms or a plurality of bit rates suitable for network conditions.

In accordance with another aspect of the present invention, when a terminal accesses a wired or wireless network and receives content, the program and information for executing the content conversion system for providing the converted content according to the network state are recorded. A storage medium, comprising: (a) a function of storing and managing terminal information; (b) producing content from a plurality of representation types or bit rates suitable for a network condition; (c) converting the content into a content of a representation or bit rate suitable for network conditions; (d) a function of monitoring a network state to which a terminal is connected; And (e) a function of storing contents produced at a plurality of representation forms or a plurality of bit rates suitable for network conditions.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function is obvious to those skilled in the art or may obscure the gist of the present invention, the detailed description thereof will be omitted.

In the present invention, the content is divided as shown in Table 1 for content conversion, and the content is managed and converted according to the divided content type. Table 1 is a table showing content types, content type examples, and content conversion types according to content types.

Referring to Table 1, content types may be classified into separable content and non-separable content according to whether the expression forms constituting the content are separable. The representation includes text, images, audio, and video.

Detachable content is content that can be separated from each other by being composed of at least one or more of a representational form including text, image, audio, and video. An example would be a Web Page file that is provided when browsing the Internet. Such a web page may consist of text only, text and images, text, images, and audio, and text, images, audio, and video. In the case of such detachable content, the expression form is converted when the content is described in detail later. The " expression form conversion " means extracting only text from the content consisting of expression forms including text, image, audio, and video and converting it into content, or extracting text and image to convert the content, or converting text, images, and audio. Means to extract and convert it to content.

Non-separable content is content that cannot be separated separately, even if it consists of only one representation or two or more representations. Therefore, the content cannot be "expression type conversion". The non-separable content may include a video file or a music file requiring a large capacity and a high bandwidth. The video files have different bit rates according to encoding and compression schemes, and when a video file having a high bit rate is required, a larger bandwidth network is required. Therefore, in the case of the non-separable content, bit rate conversion is performed during content conversion, which will be described in detail later. The term "bit rate conversion" means converting a video file having a high bit rate into a low bit rate video file.

According to the two types of content and the conversion type, the content producer produces the content and stores the content in the content server, and the content converter converts the content stored in the content server and provides it to the terminal when a content conversion request occurs according to the network condition.

1 is an overall conceptual diagram of a content conversion system.

Referring to FIG. 1, a content conversion system according to a network state according to the present invention includes a content converter 100 for converting content into a content suitable for a network state or a bit rate, and a network state to which a terminal is connected. The network state manager 110 for monitoring the information, the terminal information manager 120 for storing and managing the terminal information, the content producer 130 for producing a single content in various representation forms or bit rates suitable for the network state It is composed of a device that includes, the content of various representations or bit rate (Bit Rate) is stored in the content server (140) operated by a content provider (CP). The content conversion system interoperates with the network 150 and provides the converted content to be suitable for the network 150 state to the terminal 160 such as a mobile phone, a PDA, a notebook computer, and the like.

The terminal information manager 120 performs a function of storing and managing terminal information, and the terminal information includes the size of the screen display unit of the terminal 160 including information on whether the terminal supports color, the number of pixels, the horizontal length, and the vertical length. Information, application information (application name, application version, type of playable content, and other functions) mounted on the terminal in charge of information, content inquiry, content download, and content playback, and terminal list information held by each user. It includes.

The terminal information manager 120 stores the terminal information and performs a function of inputting, editing, and storing the terminal information. In addition, when a request for the terminal information is received from the content converter 100, the terminal information on the terminal 160 is inquired and transmitted.

The content producer 130 produces the content according to the content type. In the case of the detachable content composed of multiple expression forms, the content producer 130 can produce the content so that the original content has one or more expression forms among all the expression forms included, and the expression form. Non-separable content that cannot be separated can be produced by encoding at various bit rates.

The content producer 130 performs a function of producing one content in various representation forms and various bit rates, thereby providing a basis for the content converter 100 to freely convert the contents according to network conditions and user selections. Do it.

In the production of detachable content, the content producer 130 displays at least one or more expressions among various expressions including content, text, image, audio, and video. Select to produce a variety of content suitable for the network 150 status. For example, in the case of news content, one news content may be produced only in text, text, image, text, and image. , And audio may be included, and content may be produced including text, image, audio, and video. The content of the various expression forms thus produced is stored in the content server 140.

In the production of non-separable content, the content producer 130 encodes the original content at various bit rates to produce various contents suitable for the network 150 state. For example, if the original movie file is encoded at 4 Mbps (Mega Bit Per Second: Mbps), the original movie file is encoded at 1 Mbps, 2 Mbps, 3 Mbps, and so on. The content having various bit rates thus produced is stored in the content server 140.

The content producer 130 stores a content expression table that defines the content and the content expression form in order to produce one content in various expression forms. The content expression table corresponds to a type ID for identifying a content type, a content ID for identifying content as a unique value for the content, an expression ID for identifying various types of expressions for one content, and each expression ID. Contains content content information. The content content information may refer to actual content or may refer to virtual operation. That is, in the case of detachable content, the content content information may be extracted from only text, extracts text and images, or may include text, image, audio, And it may be a reserved word for extracting all representations such as video (Vedio), in the case of non-separated content, the content content information encoding at a very low bit rate (Very Low Bit Rate), low bit rate (Low) Reserved words for encoding at Bit Rate, encoding at Medium Bit Rate, encoding up to High Bit Rate, or encoding up to Very High Bit Rate. Can be.

The content converter 100 performs a function of converting content into content of a representation type or bit rate suitable for network conditions. That is, after receiving the conversion request from the terminal 160 or the network state manager 110, the appropriate content expression type and bit rate are designated according to a predetermined conversion rule based on the network state information of the current state and the corresponding terminal information, and the like. The server performs a content conversion function of requesting the server, receiving the content of the same content produced in the designated representation type and bit rate from the content server 140, and transmitting the content to the corresponding terminal. The conversion request from the terminal 160 occurs when the user wants to convert the content, and the conversion request from the network state manager 110 detects the network state deterioration while the user is receiving the content service. Occurs when a conversion request is made.

The content converter 100 receives a conversion request from the terminal 160 or the network state manager 110 and converts a conversion command unit for instructing the conversion engine to convert the content and a conversion rule table that stores a conversion rule table (Data Base: DB). (Hereinafter referred to as DB), a conversion engine that is substantially responsible for content conversion, a content receiving unit for receiving the converted content from the content server 140, a file storage for temporarily storing the converted content transmitted from the content server 140, and And a content transmitter for transmitting the converted content to the terminal 160 or the content server 140. Each part constituting the content converter 100 will be described in more detail with reference to FIG. 3.

The network state manager 110 monitors the network state to which the terminal is connected in real time, and if the monitored network state deteriorates, request the content converter 100 to convert the content. In addition, when the network state information request is received from the content converter 100, the network state manager 110 transmits the network state information that has been monitored and managed to the content converter 100.

The network 150 monitored by the network state manager 110 may be any network that the terminal will use during the content service, and in terms of network structure, a server-end or terminal-end access network and a backbone network may be used. Channel type includes wired network and wireless network, and in terms of terminal location, home network to which the user subscribed, visited network to which subscriber has moved, and data in terms of data A packet network such as the Internet and a circuit network such as a mobile telephone network may be included.

The network state information monitored by the network state manager 110 includes a bandwidth for the network 150 being monitored, wireless signal strength on a wireless channel, roaming status, terminal location, and the like. Such network state information may be directly managed by the network state manager 110, or the network state manager 110 may collectively manage network state information obtained from various other network sensing systems on the network.

Referring to FIG. 1, the terminal information manager 120, the content producer 130, the content converter 100, and the network state manager 110 are connected to a terminal or a content server including an access network to which a terminal is connected. It can be distributed or co-located on each server side including the access network.

The content server 140 is operated by a content provider (CP), stores content of various representation forms or various bit rates produced by the content producer 130, and the content producer 130. For interworking with the content converter 100, all content stored in the content server 140 is managed by the content server based on the content ID, the expression ID, and the content content information.

At the time of content conversion, the content server 140 receives content conversion information including the original content ID, the table wq current ID, and the content content information from the content converter 100, searches for content suitable for the received content conversion information, and retrieves the content. It performs the function of transmitting to the converter (100).

The network 150 may be any network that the terminal will use during the content service, and in terms of the network structure, includes a server-side or terminal-end access network and a backbone network. Types include wired networks and wireless networks, and in terms of terminal location, a packet network such as a home network to which a user subscribes, a visited network to which a subscriber has moved, and an internet in terms of data And a circuit network such as a mobile telephone network.

Terminal 160 has a wired or wireless interface (Interface), means a network device (Network Device) that can be connected to the network 150, desktop, notebook, portable terminal (Mobile Terminal), mobile terminal (Mobile Terminal) It includes all of them.

2 is a diagram illustrating a content expression table 200 stored in the content producer 130. The content expression table 200 defines a content, a representation form, and a bit rate in order to produce one content in various representation forms or various bit rates, and is stored in the content producer 130. In addition, the content expression table includes a type ID 210 for identifying a content type, a content ID 220 for identifying a content as a unique value of the content, and an expression ID 230 for identifying various types of expressions for one content. ), And content content 240 information corresponding to each expression ID. The content content 240 information may refer to actual content or may refer to virtual operation. That is, in the case of the detachable content having the type ID of "01", the content content information includes extracting only text, extracting text and images, or extracting all representation forms such as text, images, audio, and video. It may be a reserved word to refer to, and in the case of non-separated content having a type ID of "02", encoding at a very low bit rate, encoding at a low bit rate, intermediate bit rate ( Medium Bit Rate), encoding up to a high bit rate, or encoding up to a very high bit rate (Very High Bit Rate) can be a reserved word. The type ID 210, content ID 220, expression ID 230, and content content 240 information is used as a common means for expressing content in the entire content conversion system.

Referring to FIG. 2, the content producer produces detachable content having various types of expressions (Korean text, English text image, audio, and video) having “01” as the type ID 210, and an original having various expression forms. Assuming that the content has "0001" as the content ID, producing content with the expression ID 230 "0001a" means extracting only text from the original content to produce the content, and the expression ID 230 indicates " Creating content with "0001b" means producing content by extracting only text and images from the original content, and producing content with expression ID 230 "0001c" means that text, images, and audio are generated from the original content. It means extracting and producing content. In addition, the production of the content with the expression ID 230 "0001e" means that the content is produced by extracting only the text described in English from the original content.

Referring to FIG. 2, assuming that the content producer encodes non-separable content having "02" as the type ID 210 at 4 Mbps, and has "0002" as the content ID, the expression ID 230 is " Creating content that is 0002a "means that the original content is produced at a very low bit rate (for example, less than 1 Mbps), and producing content that has an expression ID 230 of" 0002b "means that the original content is produced. This means that the content is produced at a low bit rate (for example, 1 Mbps or more and less than 2 Mbps), and that producing content with the expression ID 230 of "0002c" means that the original content is medium bit rate (for example, 2 Mbps or more and less than 3 Mbps). ) Means that the content is produced at a high bit rate (for example, 3 Mbps or more and less than 4 Mbps), and that the content with the expression ID 230 is " 0002d " Content with 230 is "0002e" To produce means to produce the original content at a very high bit rate (eg 4Mbps or higher).

3 is a diagram illustrating an internal configuration of the content converter 100.

The content converter 100 performs a function of converting content into content of a representation type and a bit rate suitable for network conditions. That is, the content converter 100 receives the conversion request from the terminal 160 or the network state manager 110, and then displays the appropriate content according to a predetermined conversion rule based on the current network state information and the converted terminal information. It requests the content server by specifying the form or bit rate, and receives the content of the same content produced in the specified representation type or bit rate from the content server 140, and performs a content conversion function to transmit to the corresponding terminal.

In the situation where the conversion request occurs, the network state manager 110 detects a change in network state and a case that occurs from the terminal 160 by user selection, and automatically generates a conversion request from the network state manager 110 in the system. There is a case.

The content converter 100 receives the conversion request from the terminal 160 or the network state manager 110 and the conversion command unit 300 which is responsible for instructing the content conversion to the conversion engine 320 and the conversion rule table. The rule DB 310, the conversion engine 320 substantially responsible for content conversion, the content receiving unit 330 for receiving the converted content from the content server 140, and the converted content transmitted from the content server 140 are temporarily suspended. It includes a file storage 350 to store, and a content transmitter 340 for transmitting the converted content to the terminal 160.

The conversion command unit 300 receives a conversion request from the terminal 160 or the content network state manager 110 including the content ID of the original content encoded in all the various forms or encoded at a high bit rate, After transmitting the request for the network status information and the terminal information to the state manager 110 and the terminal information manager 120, respectively, the network state information and the terminal information from the network state manager 110 and the terminal information manager 120, respectively. Receives the conversion context (Context) to determine, and transfers the identified conversion context to the conversion rule DB (310), and transfers the conversion rule corresponding to the conversion context (Context) from the conversion rule DB (310) Receive the original content ID and the conversion rule to a conversion engine. The conversion context is information combined with at least one of network state information, roaming information, terminal information, location information, user selection information, and automatic selection information.

The conversion rule DB 310 includes a conversion context received from the conversion command unit 300, various options for the conversion context, and a conversion rule corresponding to the option. Contains the conversion rule table. Accordingly, after receiving the conversion context from the conversion command unit 300, the conversion rule is transferred to the conversion command unit 300 by referring to a previously stored conversion rule table. The conversion rule table will be described in more detail with reference to FIGS. 4A and 4B.

The conversion engine 320 receives the original content ID and the conversion rule from the conversion command unit 300, and an expression for identifying the original content ID, a representation type, or a bit rate for identifying the content based on the original content ID and the conversion rule. Generating content conversion information including an ID and content content information indicating actual content or virtual operation corresponding to the expression ID, and converting the content conversion information (content ID, expression ID, content content information) into a content receiving unit. It transmits to the content server 140 via the (330).

The content receiving unit 330 transmits a content download request including content conversion information (original content ID, expression ID, content content information) received from the conversion engine 320 to the content server 140, and then the content server 140. Receives the content for the content download request from the), and stores the received content in the file storage 350 as the converted content. If the content converter 100 is implemented at the terminal, the content receiver 330 downloads the content via the network 150.

The content transmitter 340 transmits the converted content stored in the file storage 350 to the corresponding terminal 160. if. If the content converter 100 is implemented at the server end, the converted content is transmitted to the corresponding terminal 160 via the network 150.

4A and 4B are diagrams illustrating a conversion rule table stored in the change rule DB 310 in the content converter. The conversion rule DB 310 may include a conversion context 410 received from a conversion command unit 300 and various options 420 for the conversion context 410; And a conversion rule table including a conversion rule 430 corresponding to the option 420.

The conversion context 410 may include network capacity information indicating network status information, roaming event information related to roaming information, device capacity information related to terminal information, location information, It is information combined with at least one or more of user selection information and automatic selection information related to the information selected and input by the user.

Option 420 is information about the various cases that correspond to the conversion context 410. In FIG. 4A, if the conversion context 410 is a network capacity, various options may be provided depending on the size of the corresponding bandwidth. Also, other options may be set according to the mobile communication system. For example, the 2nd generation Global System for Mobile Communication (GSM) system sets options with very low bandwidth, and the 3.5th generation High Speed Downlink Packet Access (HSDPA) system sets options with very large bandwidth. It may be.

The conversion rule 430 is a rule for converting content corresponding to each option 420, and is a reserved word preset for each option 420. The field values in the translation rule 430 column of the translation rule table are the bandwidth, the language of the representation form. In addition, when the conversion context 410 is automatic selection or location information, the field value in the conversion rule 430 column becomes the conversion context 410 to be referred to.

4A and 4B, the field value of the Conv_Rule column in the conversion rule table may be set in the form of <Richness + number>, <language name + number>, and <Context> to refer to, and <Richness + The smaller the number is, the smaller the value means that the content conversion should be performed in consideration of the smaller bandwidth. In <Language Name + Number>, the original content is converted into the expression form of the corresponding language name according to the language name. .

5 is a flowchart illustrating a content conversion procedure.

When the terminal browses the Internet or receives a content download or playback service, a conversion request may occur through the terminal by the user's selection, and automatically after the network state change is detected in the network state manager internally without the user's selection. A conversion request may be made.

FIG. 5 is a diagram illustrating a process of converting corresponding original content into content suitable for a network state by the conversion request.

Referring to FIG. 5, the conversion command unit 300 receives a conversion request including the content ID for the original content from the conversion request side 500 (terminal or network state manager) (S 501), and the network state manager 110. ) And the network state information request (S 502) and the terminal information request (S 503) to the terminal information manager 120, respectively, and then the network state from the network state manager 110 and the terminal information manager 120, respectively. Receive the information and the terminal information (S 504, S 505) to determine the conversion context (Con Context), and transfers the identified conversion context (Trans) to the conversion rule DB 310 (S 506), the conversion context ( The conversion rule corresponding to the context) is received from the conversion rule DB 310 (S 507), and the original content ID and the conversion rule are transmitted to the conversion engine (S 508).

The conversion engine 320 receives the original content ID and the conversion rule from the conversion command unit 300 (S508), and based on the original content ID and the conversion rule, an expression ID for designating the original content ID, a representation type or a bit rate, And content conversion information including content content information indicating actual content or virtual operation corresponding to the expression ID, and converting the content conversion information (content ID, expression ID, content content information) to the content receiving unit 330. (S 509, S 510) is transmitted to the content server 520.

The content receiving unit 330 receives the converted content 530 corresponding to the content conversion information from the content server 520 (S 511), and stores the converted content 530 in a file storage for temporary storage of the content. In operation S512, the process is stored in 350.

The content transmitter 340 transmits the converted content 530 stored in the file storage 350 to the terminal (S 513 and S 514).

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, by using the present invention, by providing the converted content suitable for the network state to the terminal user, the content user can be provided with a content conversion system that prevents content service delays and quality deterioration.

According to the present invention, the most suitable content is transmitted through the network even under various conditions such as network conditions, terminal specifications, etc., thereby providing the network provider (ISP) with the maximum utilization of the network.

According to the present invention, it is possible to provide a content provider with a condition to prepare a variety of content to serve the content to all users.

Claims (16)

When the terminal is connected to the wired or wireless network based on the content provided, the content conversion system for providing the converted content according to the network state, (a) a terminal information manager for storing and managing terminal information; (b) a content producer for producing one piece of content in a plurality of forms; (c) a content converter for converting content into one of a plurality of representations based on network conditions; (d) a network state manager for monitoring a network state to which a terminal is connected; And (e) a content server containing content produced in a plurality of presentation forms Including but not limited to: The content converter, Representational form including text; Representational forms including text and images; Representations including text, images and audio; And Representation forms including text, images, audio and video Content conversion system, characterized in that for converting the content to one representation form of a plurality of representation forms comprising a. delete The method of claim 1, The terminal information manager, Information on whether the terminal supports color; Screen size information of the terminal including the number of pixels, the width, and the length; Information of an application mounted on a terminal in charge of content inquiry, content download, and content playback; And Terminal list information held by user Content conversion system, characterized in that for storing, inputting, editing, and querying terminal information including. The method of claim 1, The content producer, In order to produce one piece of content in multiple forms, A type ID for identifying the content type; A Content ID identifying the content; An expression ID for identifying a plurality of expression forms for one content; And Content content information corresponding to expression ID And a content expression table including a content expression table. The method of claim 1, The content converter, A conversion command unit which receives a conversion request from a terminal or a network state manager and instructs a conversion engine to convert content; A conversion rule DB that stores a conversion rule table; A conversion engine that is substantially responsible for content conversion; A content receiving unit receiving the converted content from a content server and storing the converted content in a file storage; A file storage for temporarily storing the converted content; And Content transmission unit for transmitting the converted content stored in the file storage to the terminal Content conversion system, characterized in that comprises a. The method of claim 5, The conversion command unit, Receive a translation request from the terminal or the network state manager that includes the Content ID for the original content, Sends a request for network status information and terminal information to the network status manager and the terminal information manager, respectively. Receive network status information and terminal information from the network state manager and the terminal information manager, respectively, to determine the conversion context (Context) for the conversion request, Transfer the identified conversion context to a conversion rule DB, Receiving a conversion rule corresponding to the conversion context from a conversion rule DB, and And transmitting the original content ID and the conversion rule to a conversion engine. The method of claim 6, The conversion context is And information combined with at least one of network state information, roaming information, terminal information, location information, user selection information, and automatic selection information. The method of claim 5, The conversion rule DB, A conversion context received from the conversion command unit; An option for the transformation context; And Conversion rule corresponding to the option Content conversion system, characterized in that for storing a conversion rule table comprising a. The method of claim 5, The conversion engine, Receiving the original content ID and the conversion rule from the conversion command unit, Generate content conversion information including the original content ID, the expression ID, and the content content information based on the original content ID and the conversion rule; Content conversion system, characterized in that for transmitting the content conversion information to the content receiving unit. The method of claim 5, The content receiving unit, Transmitting a content download request including content conversion information (original content ID, expression ID, and content content information) received from the conversion engine to a content server, Receiving content for the content download request from the content server, And storing the received content as the converted content in the file storage. The method of claim 5, The content transmission unit, And the content receiving unit transmits the converted content stored in the file storage to the corresponding terminal. The method of claim 6, The network state manager, Monitor network status in real time, When the network condition of the content service deteriorates, a conversion request is made to the content converter. And after receiving a network status information request from the conversion command unit that receives the conversion request from the terminal, transmitting the network status information to the conversion command unit. delete When a terminal is connected to a wired or wireless network to provide the content, the content conversion system that provides the content converted to the terminal according to the network state, (a) Receiving a request for conversion of the original content by the network state manager or the terminal detecting the network state, grasping the conversion rule for the original content based on the network state information received from the network state manager, and corresponding to the conversion rule A content converter that designates a representation form, requests a content server corresponding to the specified representation form, receives a content server, transmits the content to the terminal; And (b) a network state manager which monitors the network state to which the terminal is connected and transmits the network state information monitored by the content converter upon receiving the network state information request from the content converter that receives the conversion request from the terminal, The specified representation is Representational form including text; Representational forms including text and images; Representations including text, images and audio; And Representation forms including text, images, audio and video Content conversion system, characterized in that one of a plurality of expression forms including. delete In the storage medium recording a program and information for executing the content conversion system for providing the converted content to the terminal according to the network conditions, when the terminal is connected to the wired or wireless network to provide the content, (a) storing and managing terminal information; (b) producing one piece of content in a plurality of forms; (c) converting the content into one representation form of the plurality of representation forms based on the network state; (d) a function of monitoring a network state to which a terminal is connected; And (e) the ability to store content produced in multiple representations Including; In the above (c) function, Representational form including text; Representational forms including text and images; Representations including text, images and audio; And Representation forms including text, images, audio and video A computer-readable storage medium having recorded thereon a program and information for implementing content conversion into one of a plurality of representations, including a representation.

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