KR20030008522A - method and apparatus for playing multimedia in internet mobile phone - Google Patents

Abstract

PURPOSE: A method for reproducing a multimedia in a wireless internet terminal and an apparatus therefor are provided to be independently operated with a WAP(Wireless Application Protocol) browser for transmitting and receiving multimedia data through a TCP/IP(Transmission Control Protocol/Internet Protocol) connection and reproducing the multimedia data. CONSTITUTION: A WAP browsing processing unit(11) operates a WAP browser, connects to a WAP server, selects corresponding multimedia data to be reproduced, and receives link information of corresponding contents. A multimedia data connection processing unit(12) connects to a contents server through a TCP/IP connection on the basis of link information of multimedia contents received through the WAP browser, and receives the corresponding multimedia contents stored in the contents server. A multimedia data reproducing unit(13) reproduces the multimedia contents downloaded through the multimedia data connection processing unit(12).

Description

Multimedia playback method of wireless internet terminal and apparatus therefor

The present invention relates to a method for playing multimedia in a wireless internet terminal, and more particularly, to a method and apparatus for playing multimedia in a wireless internet terminal incorporating a swap browser.

WAP (WAP) stands for Wireless Application Protocol and is a general term for a protocol that enables the Internet to be used on a small wireless terminal such as a mobile phone or a PDA. Wap enables internet communication with the mobile phone terminal itself. In other words, instead of converting data using a modem, the packet communication of the Internet is directly converted into a simple communication suitable for a mobile telephone network through a server installed in a wireless communication provider.

Wap is a protocol developed to solve the speed problem when sending or receiving HTML, which is a standard language on the Internet, to a mobile phone. The mobile phone itself provides convenience for handling a large amount of data unlike a computer. can not do. Designing a text input terminal is inevitably burdensome in terms of size and weight, and there is a limitation that existing voice-oriented terminals cannot have a function of viewing a large amount of data or inputting a large amount of data.

For this reason, in the case of the swap, the user can use the Internet through the terminal only by considering the contents of the model from the design of the swap and the mobile phone. For example, a phone number retrieved from the Internet can be dialed directly from the mobile phone, and can be designed by inputting letters by a combination of several keys or by assigning each button to each content. In order to solve the problem of slow communication speed, WAP does not transmit text code as it is, but transmits it to the terminal as compact binary data compiled on a server that converts data on the Internet into a mobile phone.

On the other hand, connecting the network of the Internet by TCP / IP and the network of the existing mobile phone is a prerequisite for the implementation of the swap. Therefore, the most important system in the concept of swap is the gateway server. Data constituting the content is transmitted in a completely different form on the Internet and mobile phone communication lines. In addition to the function of converting text file data on the Internet into a binary structure, the gateway server has a function of sending an application, sending and receiving mail, and sending information to a mobile phone, which is helpful in an environment using a mobile phone.

Another important aspect of swap is that it uses HDML, which is different from the HTML language on the Internet. This is called WML (Wireless Markup Language) in swap. In order for many contents on the Web to reach a mobile phone terminal, as described above, a mobile phone line network is passed through a gateway server on the Internet. The method of this flow is defined in the form of a protocol, which transmits data in a proprietary protocol called HDTP on a mobile phone network, such as opening a web page in HTTP format on the Internet. The data via the gateway server is converted into a binary file, which makes it lighter and less burdensome when transferring to a mobile phone network.

Another feature of swap is its high security. On the swap, the content can be secured from the beginning to the end, using SSL (Secure Socket Layer) on the Internet, and RSA128bit (Japan RSA40bit) encryption technology on the mobile phone network. Such security technology can be considered to be the security of conduction that can cope with electronic authentication or billing system.

Currently, the swap camp is committed to developing it into an architecture that can be used by all wireless network technologies around the world, including CDMA, GSM, CDPD and TDMA, and standardization is underway to share it with participating member information as an open protocol.

Such a swap-based wireless terminal includes CDMA, GSM, CDPD, TDMA and other wireless communication terminal devices connected to a mobile communication network.

Meanwhile, a swap terminal to be described in the detailed description of the present invention means a swap-based wireless terminal, and the wireless terminal and the swap terminal have the same meaning.

1 is a conceptual diagram illustrating a flow of data in a typical swap-based wireless terminal. As shown in FIG. 1, a related system for performing Internet services using a conventional swap-based wireless terminal is a swapping terminal (also called a WML browser; 1), a mobile communication network (2), a swap gateway (3), and a swap server. (4), an internet network 5, and a content server 6;

In the above configuration, the swap terminal 1 refers to a CDMA, GSM, CDPD, TDMA, and other wireless communication terminals based on the swap. In other words, a commonly called mobile phone is based on swap.

The swap gateway 3 serves as an interface between the swap terminal 1 and the swap server 4. The essential condition for implementing the swap is to connect the network of the Internet by TCP / IP and the network of the existing mobile phone. Therefore, the most important system in the concept of swap is the swap gateway. Because the data that constitutes the content is delivered in a completely different form on the Internet and mobile phone communication lines, Gade Way converts text file data on the Internet into a binary structure. It has a function of sending and receiving information and sending information to a mobile phone.

The swap server 4 provides the owning information and various information from the Internet server to the swap terminal. That is, the swap server 4 is connected between the Internet content server 6 which provides various information and the swap terminal 1 which can receive the information provided from this Internet content server 6, and the Internet content server 6 is connected. It serves to convert the heterogeneous data and the heterogeneous protocol between and the swap terminal 1, and may also provide its own information to the swap terminal (1).

The wireless Internet system using the swap-based wireless terminal configured as described above is well known to those skilled in the art to which data communication belongs, so the detailed description thereof will be omitted.

Meanwhile, the data flow of the wireless Internet system using the swap-based wireless terminal configured as described above will be described below. That is, all the Internet service requests of the swap terminal 1 go through the swap gateway 3, and the swap gateway 3 requests the service again through the existing Internet wired network according to the swap protocol. Subsequently, the process is performed by the swap gateway 3 receiving a response from the swap server 4 and transmitting the swap protocol to the swap terminal 1 which originally requested the service.

As the swap gateway 3 is limited in the size of data that can be processed at one time using the swap protocol, a terminal equipped with a browser can transmit and receive multimedia data having a large file size through the swap gateway according to the packet configuration. There's a lot of overhead and a lot of changes to the browser.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a multimedia service method and system through the wireless Internet which operates independently of a conventional WB browser and transmits and plays multimedia data through a TCP / IP connection. The purpose.

The present invention to achieve the object of the present invention is to run the embedded browser in the wireless terminal connected to the swap server to receive the link information of the multimedia data, based on the received link information, the multimedia content through the TCP / IP connection It connects to the server and downloads the stored multimedia data, and plays the downloaded multimedia data. As described above, only the link information of the multimedia data having small data size is received from the swap server via the swap gate, and the size is obtained by downloading and playing the multimedia data by accessing the content server through the Internet network based on the link information. Is to enable playback of large multimedia data.

1 is a block diagram of a typical swap-based wireless communication system.

2 is a block diagram of a swap-based wireless communication system for playing multimedia data according to the present invention.

3 is a diagram illustrating a protocol stack structure of a terminal of FIG. 2.

4 is a protocol stack structure diagram of the content server of FIG.

5 is a block diagram illustrating an internal block of the terminal of FIG. 2;

6 is a flowchart illustrating a multimedia data download operation in a swap-based wireless communication system according to the present invention.

7 is a flowchart illustrating the operation of the wireless Internet terminal performing the operation of FIG. 6.

8 is a flowchart illustrating a multimedia data upload operation in a swap-based wireless communication system according to the present invention.

9 is a flowchart illustrating operations of a wireless Internet terminal performing the operation of FIG. 8.

<Description of the symbols for the main parts of the drawings>

10: wireless Internet terminal 11: the swap browsing processing unit

12: multimedia data connection processing unit 13: multimedia playback unit

13: control unit 20: BTS

30: BSC / MSC40: IWF

50: router 60: swap gateway (WAP G / W)

70: swap server 80: Internet network

90: content server

Hereinafter, a method and apparatus for playing multimedia in a wireless Internet terminal according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a wireless Internet system using a WAP-based wireless terminal according to an embodiment of the present invention, the configuration of the terminal 10, BTS 20, BSC / MSC 30, IWF 40, a router 50, a swap gateway 60, a swap server 70, an internet network 80, and a content server 90. Here, the BTS 20, the BSC / MSC 30, the IWF 40, and the router 50 are components of a swap terminal 10 for utilizing wireless Internet contents through a mobile communication network. Since the wireless Internet system used is well known to those skilled in the art, a detailed description thereof will be omitted.

The terminal 10 basically satisfies the swap browser specification so as to be connected to the swap server 70, and refers to a CDMA, GSM, CDPD, TDMA, and other wireless communication terminals based on the swap. In other words, a commonly called mobile phone is based on swap. The terminal 10 includes a swap browser for processing various wireless data by accessing the swap server 70 using a swap protocol, and a multimedia player for downloading and playing multimedia data.

The swap browser should be able to access the swap server 70 through the swap gateway 60 and retrieve a list of multimedia contents. In addition, the content link information for the content selected by the user receives from the swap server 70 and delivers to the multimedia player mounted on the terminal. The multimedia player can access the content server 90 through the TCP / IP connection with reference to the content link information, and also has a protocol stack for supporting the server connection and a protocol for downloading and uploading the multimedia content. 3 is a diagram illustrating a protocol stack structure for supporting a connection with the content server 90 in the terminal 10. The configuration is RLP, PPP, IP, IP / TCP, HTTP, WDP, WTP, WSP, It can be made of the structure of the WAP Browser. Each element constituting the stack is well known to those skilled in the art to which the wireless Internet system belongs, and thus its detailed description will be omitted. The multimedia player transmits and receives multimedia contents using a download protocol and an upload protocol to be described later.

That is, the terminal 10 first drives the swap browser to access the swap server 70 to retrieve a list of multimedia contents, select the multimedia contents to be played from among them, receive link information of the corresponding multimedia contents, and then swap the swap server. The connection with the control unit 70 is disconnected, and the multimedia player is driven to access the content server 90 in which the multimedia data is stored, based on the link information, to download and play the multimedia data.

The swap server 70 provides link information of various multimedia devices according to a request signal transmitted from the terminal 10 to the terminal 10 connected through the swap gateway 60. The swap server 70 does not provide the terminal 10 with the multimedia data itself to be played through the swap protocol, but provides link information about the multimedia data to be played. This link information may include information such as a URL, content ID (content_ID), version, etc. of the corresponding multimedia data. By providing such link information to the terminal 10, the terminal 10 refers to the link information to access the content server 90 in which the multimedia data is stored, and download and play the multimedia data.

The content server 90 stores actual multimedia data to be played in the terminal 10. That is, when the terminal 10 requests the download of the multimedia data by accessing the content server 90 based on the link information provided from the swap server 70, the terminal 10 transmits the multimedia data to the terminal. In addition, when the terminal 10 requests the upload of the multimedia content, the terminal 10 receives and stores the multimedia content. As such, the content server 90 is provided with a download or upload protocol as it needs to transmit and receive multimedia data through the TCP / IP connection with the terminal 10, and has a protocol stack accordingly. 4 is a diagram illustrating a protocol stack structure for supporting a connection with the terminal 10 in the content server 90. The configuration may be configured as a lower layer, an IP, a TCP, and an HTTP from the lower layer. Each element constituting the stack is well known to those skilled in the art to which the wireless Internet system belongs, and thus its detailed description will be omitted. The download or upload protocol will be described later.

FIG. 5 is a block diagram of the terminal of FIG. 2, and the configuration may include a swap browsing processor 11, a multimedia data connection processor 12, a multimedia player 13, and a controller 14. The multimedia data connection processor 12 and the multimedia player 13 may be configured as one multimedia player.

The swapping processing unit 11 performs a function of performing wireless Internet service by transmitting and receiving various wireless Internet contents by accessing the swap server 70 through the swap gateway 60 using the swap protocol. To this end, a swap browser for transmitting a user's selection signal and the like to the swap server 70 and displaying the data received from the swap server 70 on the screen of the terminal is used. The swap browser processing unit 11 receives the link information of the multimedia data to be played back from the swap server 70 by driving the swap browser.

The multimedia data connection processing unit 12 connects to the content server 90 that provides various multimedia data through the TCP / IP connection based on the link information received through the swap browsing processing unit 11. The multimedia data access processor 12 is connected to the content server 90 and stored in the content server 90 to perform a procedure of downloading or uploading various multimedia data. This requires a separate protocol. The download or upload protocol for the multimedia data will be described later.

The multimedia player 13 reproduces the multimedia data downloaded through the multimedia data connection processor 12. At this time, the type of multimedia data to be played back has various file formats such as BMP, SIS, SWF, MP3, WAV, MPEG4, GIF, JPEG, PNG, AMR, G.723, H.263, and ASF. It should be possible.

The controller 14 drives the swap browser to receive link information of the corresponding multimedia data to be connected to the swap server, releases the connection with the swap server 70 when reception of the link information is completed, and The multimedia data connection processor 12 and the player 13 for downloading and playing are driven.

When downloading the multimedia data from the content server 90 in the swap terminal 10, or upload the multimedia data to the content server 90, a download protocol or an upload protocol is required accordingly.

The download protocol is a protocol used when downloading multimedia data from the content server 90 to the terminal. The download protocol is largely composed of a request message and a response message, and may be performed as follows.

The request message is used to transmit a message from the terminal to the server, and may include a content ID (content_ID), a sequence number (Seq_Num), and result type information.

The content ID (content_ID) is a unique number for the multimedia data, and the sequence number Seq_Num represents a sequence number until all contents of the content are received.

The result type information indicates the result of transmitting / receiving the multimedia data. The message requesting data to the server (WMD_DOWNLOAD_START), the message indicating that the data reception from the server is normal (WMD_DOWNLOAD_OK), the message indicating completion of data transmission (WMD_DOWNLOAD_END), It may include a message (WMD_DOWNLOAD_ERROR) indicating that an error occurred in receiving data transmitted from the server.

The response message is used when the server side responds to the request message of the terminal and includes the following information.

The response message protocol may include content ID (content_ID), response type information, sequence number (Seq_Num), data type information, color type information, frame information, image size information, body data information, and the like.

The content ID (content_ID) is a unique number for the multimedia data stored in the content server 90. The response type information includes a message (WMD_DOWNLOAD_DATA) indicating that data has been transmitted from the content server (90) to the terminal (10), a message indicating that transmission of the data is completed (WMD_DOWNLOAD_FINISH), and an error occurred in receiving data transmitted from the terminal. Message (WMD_DOWNLOAD_FAIL) indicating that the operation is completed.

The sequence number Seq_Num represents a sequence number until all contents of the multimedia data are transmitted and received. The data type may define a multimedia type constituting the multimedia data. For example, there may be BMP, SIS, SWF, MP3, WAV, MPEG4, and the like.

The color type indicates the color depth. The color depth means, for example, black color for 1 bit, 4 gray for 2 bit, 256 color for 8 bit, and 4096 color for 12 bit.

The frame type indicates the number of frames of the image data, the pixel size indicates the size of the image to be transmitted, and the real data indicates the actual data constituting the content.

Meanwhile, the upload protocol is a protocol used when uploading multimedia data from the terminal 10 to the content server 90. The request message and the response message may be configured as follows.

The request message is used when the multimedia data is transmitted from the terminal to the content server 90. The request message includes a content ID (content_ID), a sequence number (Seq_Num), result type information, data type information, color type information, frame information, and image size information. , Real data information, and the like. Since the data type information, color type information, frame information, image size information, and real data information have been described in the download protocol, they will be omitted.

The content ID (content_ID) is a unique number for the multimedia data to be uploaded to the content server 90. The sequence number Seq_Num indicates a sequence number until all the contents of the multimedia data to be uploaded are transmitted, and the result type information transmits a message (WMD_UPLOAD_START) requesting the content server 90 to start transmitting data. Message (WMD_UPLOAD_DATA) indicating that the transmission of the data has been completed (WMD_UPLOAD_FINISH), a message indicating that an error occurred in receiving a message transmitted from the server (WMD_UPLOAD_FAIL) and the like.

The response message is used when the server side responds to the request message of the terminal, and may include a content ID (content_ID), response type information, and a sequence number (Seq_Num). Since the content ID (content_ID) and the sequence number (Seq_Num) are the same as described above in the download protocol, description thereof will be omitted.

The response type information includes a message indicating that the multimedia data transmitted from the terminal is normally received (WMD_UPLOAD_OK), a message indicating that the reception of data transmitted from the terminal is completed (WMD_UPLOAD_END), and a message indicating that an error has occurred in receiving data transmitted from the terminal. (WMD_UPLOAD_ERROR) and the like.

An operation of downloading and playing multimedia data transmitted from a content server in a terminal in the wireless Internet system having the above configuration will be described with reference to FIG.

First of all, the terminal is connected to a swap server by driving a browser in the terminal's swap browsing processing unit 11. The swap server 90 transmits the multimedia service menu information provided to the terminal to the terminal. Accordingly, the terminal receives and retrieves the multimedia service menu information transmitted from the swap server 90 and selects a corresponding content list to be played therefrom (S1). The swap server 70 transmits the link information of the corresponding content to the WB browsing processing unit 11 of the terminal through the WML script function (S2). Here, the link information may include a URL, a content ID (content_ID), a version, and the like.

The swap browsing processing unit 11 of the terminal stores the link information on the content received from the swap server 70, changes the service option for TCP / IP connection in the swap browsing connection, and then closes the browser to change the swap server 70. (S3).

When the connection with the swap server 70 is released, the multimedia data connection processing unit 12 of the terminal attempts to make a TCP / IP connection. That is, the value of the request message of the download protocol is set and transmitted to the content server (S4). At this time, a unique number (4 bytes) of the selected content is set in the content_ID. A value of 0x01 is set in Seq_Num. WMD_DOWNLOAD_START value is set in Result_Type (S4).

Upon receiving the request message, the content server 90 loads the content data in the response message WMD_DOWNLOAD_DATA defined by the download protocol and transmits the content data to the terminal (S5). At this time, the Content_ID should be the same value as the Content_ID requested by the terminal. The content data is divided and transmitted in the Real_Data field of the response frame.

The partitioned data sequentially sets a value to Seq_Num that increases from 0x01 to 0xFF. Response_Type is WMD_DOWNLOAD_DATA value. Set Color_Type, Frame_Type, Pixel_Size, Data_Type values.

Upon receiving the response message from the server, the terminal transmits the response message to the server using the request message. If reception is successful, WMD_DOWNLOAD_OK is set in Result_Type, and if it fails, WMD_DOWNLOAD_ERROR is set (S6).

Upon receiving WMD_DOWNLOAD_OK, the content server 90 repeatedly transmits the remaining data to the last frame when data corresponding to Seq_Num + 1 remains. The server that receives WMD_DOWNLOAD_ERROR retransmits the corresponding Real_Data.

When the content server 90 transmits the last frame and receives WMD_DOWNLOAD_OK from the multimedia data access processing unit 12 of the terminal, the content server 90 transmits to the terminal through the response message WMD_DOWNLOAD_FINISH that all data has been transmitted (S7). At this time, a value of 0x01 is set in Seq_Num. Set WMD_DOWNLOAD_FINISH for Response_Type. Set to 0x000 in Real_Data.

In this way, the multimedia connection processing unit 12 of the terminal that has received the WMD_DOWNLOAD_FINISH from the content server 90 sets WMD_DOWNLOAD_END in the Result_Type of the request message and transmits it to the server to inform that the reception is completed (S8).

When reception of one multimedia data is completed, the TCP / IP connection with the content server 90 is terminated.

The multimedia access processing unit 12 merges the received content and stores it in the designated rental shop. Stored content can be played immediately and stored in flash memory storage if the user wishes to.

On the other hand, when the play or storage is finished, if the link information of the multimedia data is required to download and play another multimedia data again, the swap browser processing unit 11 drives the swap browser to connect to the swap server 70 again. Attempt to return to the URL prior to the multimedia player startup and display the content list.

FIG. 7 is a flowchart illustrating an operation of downloading and playing back multimedia data in a wireless Internet terminal performing the operation of FIG. 6.

First, the swap browser processing unit 11 drives a browser to access the swap server 70 (S11), searches for a multimedia service menu, and selects a content list (S12). Link information of the corresponding content is received from the swap server 70 with respect to the selected content list. Here, the link information may include a URL, a content ID (content_ID), a version, and the like.

The swap browser processing unit 11 stores link information on the content received from the swap server 70, changes the service option for the TCP / IP connection in the swap browsing connection, and closes the browser to exchange the swap server 70. The connection is released (S13).

When the connection with the swap server 70 is released, the multimedia data connection processing unit 12 attempts to establish a TCP / IP connection, sets the value of the request message WMD_DOWNLOAD_START of the download protocol, and transmits the value to the content server (S15).

When the content data is received from the content server 90 receiving the request message in the response message WMD_DOWNLOAD_DATA defined in the download protocol, the corresponding data is received (S16).

If reception is successful, WMD_DOWNLOAD_OK is set in Result_Type, and if it fails, WMD_DOWNLOAD_ERROR is set and a retransmission is requested to the content server 90 (S17).

It is detected whether a response message (WMD_DOWNLOAD_FINISH) has been received from the content server (90) indicating that the transmission of all data has been completed (S19). If a completion response message (WMD_DOWNLOAD_FINISH) is received, the server sets the WMD_DOWNLOAD_END to the Result_Type of the request message. Informs that reception has been completed by transmitting to (S8). If the data transmission complete message is not received, the reception operation is continuously performed. When reception of one multimedia data is completed, the TCP / IP connection with the content server 90 is terminated. The multimedia access processor 12 merges the received content and stores it in a designated temporary place (S20). The stored content is immediately played by the multimedia player 13 (S21). In addition, if the user wants to save it can be stored in the flash memory storage space.

As described above, when play or storage is completed, the swap browser 11 drives the swap browser again to download and play another multimedia data (S22).

8 is a flowchart illustrating a multimedia data upload operation according to the present invention. Referring to FIG. 8, a description will be given of an operation of uploading multimedia data from a wireless Internet terminal of a wireless Internet system to a content server.

Uploading multimedia data to the content server is performed by the multimedia access processing unit 12 in the terminal. When requesting data upload, HTTP access is made to the content server through the URL of the previously stored content server (S31). The terminal 10 sets the value of the request message of the upload protocol and transmits it to the content server (S32). At this time, a unique number (4 bytes) of the selected content is set in Content_ID. Set Seq_Num to 0x01. WMD_UPLOAD_START is set in Result_Type. When checking the reception response, the content server 90 receiving the request message from the terminal transmits the response message to the terminal 10 using the response message (S33). If reception is successful, set WMD_UPLOAD_OK to Rrsponse_Type. If it fails, set WMD_UPLOAD_ERROR. Content_ID is the same as Content_ID received from the terminal.

Upon receiving the response message, the terminal 10 transmits the content data to the content server 90 in the request message defined by the upload protocol when the value of Response_Type is WMD_UPLOAD_OK (S34).

If the value of Response_Type is WMD_UPLOAD_ERROR, request to upload data again. The content data is divided and transmitted in the Real_Data field of the request message. The partitioned data sequentially sets a value that increases from 0x01 to 0xFF in the Seq_Num field. Result_Type is set to the WMD_UPLOAD_DATA value. Set Content_ID, Color_Type, Frame_Type, Pixel_Size, Data_Type values.

The content server 90 receiving the request message from the terminal 10 transmits a response message to the terminal 10 in response (S35). If reception is successful, set WMD_UPLOAD_OK to Response_Type. If it fails, set WMD_UPLOAD_ERROR. Upon receiving WMD_UPLOAD_OK, the terminal 10 repeatedly transmits the remaining data to the last frame when data corresponding to Seq_Num + 1 remains. The terminal that receives WMD_UPLOAD_ERROR retransmits the corresponding Real_Data.

When the terminal 10 transmits the last frame and receives WMD_UPLOAD_OK from the content server 90, the terminal 10 transmits to the server through the request message that all data has been transmitted (S36). Set Seq_Num to 0x01. Set WMD_UPLOAD_FINISH for Response_Type. Set to 0x00 for Real_Data.

Upon receiving WMD_UPLOAD_FFINISH from the terminal 10, the content server 90 sets WMD_UPLOAD_END in Response_Type of the response message and transmits it to the terminal 10 (S37).

The content server 90 merges the received content data and stores it in a designated temporary place. Upon receiving the WMD_UPLOAD_END from the content server 90, the terminal 10 returns to the menu before the multimedia data upload request.

FIG. 9 is a flowchart illustrating an operation of the wireless Internet terminal for performing the operation of FIG. 8. Referring to FIG. 9, an operation of uploading the wireless Internet terminal will be described in stages.

First, a file to be uploaded is selected by receiving a user's selection signal (S41). Next, an HTTP connection is made to the content server through the URL of the content server to upload the file (S42). The URL of the content server may be selected by a user's selection signal among URL information previously stored in the terminal, or may be directly input by the user.

When connected to the content server 90, the value of the upload message request message (WMD_UPLOAD_START) is set and transmitted to the content server to request data upload (S43), and the data is transmitted together with the data transfer message (WMD_UPLOAD_START) (S44). ).

After the data is transmitted, a message indicating whether the reception is normally performed from the content server 90 is received to search for normal reception operation (S45). When receiving the WMD_UPLOAD_OK message indicating that the reception is normally performed, the next data is continuously transmitted. When receiving the WMD_UPLOAD_ERROR indicating that the reception of the data is not normally performed, the unreceived data is retransmitted.

In this way, it is searched whether the transmission is normally received until the data of the last frame (S46). If WMD_UPLOAD_OK is received from the content server 90 for the transmission of the last frame, WMD_UPLOAD_FINISH indicating that the transmission of all data is completed is set in the request message and transmitted to the content server 90. Accordingly, the content server 90 merges and stores the received content data in the designated temporary location and transmits a response message in which WMD_UPLOAD_END is set to notify the completion of the uploading operation (S47).

After receiving the WMD_UPLOAD_END from the content server 90, the TCP / IP connection with the content server 90 is terminated and the menu returns to the menu before the multimedia data upload request (S48).

According to the present invention, a wireless terminal drives the built-in swap browser to access a swap server to receive link information of multimedia data, and access the multimedia content server through a TCP / IP connection based on the received link information. By downloading the stored multimedia data and playing the downloaded multimedia data, only the link information of the multimedia data having a small data size is received from the swap server via the swap gateway, and based on the link information, By accessing the content server through the multimedia data download and playback, it is possible to play large multimedia data.

Claims (9)

In the multimedia playback method of the wireless Internet terminal with a built-in swap browser, Driving the swap browser to access a swap server, select multimedia contents to be played, and receive link information of the corresponding contents; Disconnecting from the swap server when the link information is received; Accessing a multimedia content server storing corresponding multimedia data based on the received link information; And downloading and playing the corresponding multimedia content stored in the content server. The method of claim 1, And driving the swap browser to access the swap server in order to receive link information of another multimedia content to be played. The method of claim 1, wherein the link information includes at least one of a URL, a content ID, and a version of the corresponding multimedia content. The method of claim 1, wherein accessing the multimedia content server comprises: Transmitting a request message including at least one of unique number information on the multimedia content, sequence number information until receiving the corresponding multimedia content, and transmission / reception result information of the multimedia content; Unique number information for multimedia content, response type information, sequence number information for transmitting / receiving multimedia content, multimedia type information constituting multimedia content, color depth display information, frame information of image data, size information of transmitted image And receiving a response message including at least one of data information constituting multimedia content. The method of claim 4, wherein the transmission and reception result information of the multimedia content, Multimedia of a wireless Internet terminal including at least one of information requesting data to the content server, information indicating whether or not the normal reception from the content server, information indicating the completion of data transmission, information indicating that the data reception from the content server is an error How to play. The method of claim 4, wherein the response type information, And at least one of information indicating that data has been transmitted from the content server, information indicating that data transmission from the content server is completed, and information indicating that data from the terminal has not been transmitted. In the multimedia playback device of the wireless Internet terminal with a built-in swap browser, A swapping browser for driving the swap browser to access a swap server to select the multimedia data to be played and to receive link information of the corresponding contents; a) access the content server storing the multimedia content through a TCP / IP connection based on the link information of the multimedia content received through the swap browser, b) a multimedia data access processor for downloading the corresponding multimedia content stored in the content server; And a playback unit for playing back multimedia contents downloaded through the multimedia data connection processing unit. The apparatus of claim 7, wherein the multimedia data access processor further comprises a storage unit for storing the downloaded multimedia data. The apparatus of claim 7, wherein the link information includes at least one of a URL, a content ID, and a version of the multimedia data.