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CN101478754B - Media file downloading method, apparatus and system based on copyright management - Google Patents

Media file downloading method, apparatus and system based on copyright management Download PDF

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Publication number
CN101478754B
CN101478754B CN200910003934XA CN200910003934A CN101478754B CN 101478754 B CN101478754 B CN 101478754B CN 200910003934X A CN200910003934X A CN 200910003934XA CN 200910003934 A CN200910003934 A CN 200910003934A CN 101478754 B CN101478754 B CN 101478754B
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download
file
computer
mobile communication
communication terminal
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CN101478754A (en
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黄朝志
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Honor Device Co Ltd
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Huawei Device Co Ltd
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Abstract

The invention relates to the communication field, aiming to solve the problem that the media files based on OMA and DRM can not be downloaded and used at the present mobile communication terminal which does not support browser function, in particular to provide a file downloading method and a system for mobile communication terminal, computers and media. The method comprises the following procedures: a computer is connected with a mobile communication terminal; the browser of the computer is used for confirming a download description file which will be downloaded, downloads media files from a corresponding download server according to the download description file and then transmits the media files to the mobile communication terminal for storage.

Description

A kind of media file downloading method, Apparatus and system based on copyright management
Technical field
The present invention relates to the communications field, is a kind of media file downloading method based on copyright management, Apparatus and system concretely.
Background technology
Some middle and high end mobile phones have been supported Open Mobile Alliance digital copyright management (OMA DRM:Open Mobile Alliance Digital Rights Management) function at present.
OMA DRM has three kinds of protected modes, and is as follows:
(1) forward direction lock (FL:Forward Lock), media file encapsulate by a DRM head, and the DRM header does not comprise concrete authority restriction, to the use of media file without limits, does not still allow to transmit this media file to miscellaneous equipment; Because the problem that does not exist copyright to finish using is not so need to upgrade copyright.
(2) compound transmission (CD:Combined Delivery), media file is encapsulated by a DRM head, and the DRM header comprises corresponding copyright description.Use to this media file need be followed the copyright rule limits, consumes copyright simultaneously.Equally, do not allow to transmit this media file to miscellaneous equipment; After copyright is finished using, can not upgrade copyright; Can be loaded with the media file of copyright again down.
(3) download of transmission (SD:Separate Delivery) respectively, promptly media file is separately downloaded by secret key encryption and rights file, upgrades copyright etc., is above-mentioned handling process substantially all, specifically can be with reference to OMA DRM agreement.
Be illustrated in figure 1 as media file and rights file in the prior art and separately download the flow chart of (SD), in may further comprise the steps:
Step 101, mobile phone be by integrated browser, removes browser media file on the website that CP/SP (content supplier/service provider) provides;
Step 102, the download description document (DD:DownloadDescriptor) of the media file of mobile phone-downloaded correspondence, the essential information of checking corresponding media file;
Step 103, mobile phone is to the digital copyright management message DM (DRM Message) of the media file of server requests download appointment, and the address of this document is in DD;
Step 104, the digital copyright management DRM file of mobile phone-downloaded media file, and resolve and install, the success back is to the message of a success of server Post;
Step 105, server are chargeed to mobile phone after receiving the message of mobile phone successful installation.
The inventor finds to have following problem at least in the prior art in realizing process of the present invention, browsing, downloading owing to media file, so and function such as purchase of copyright, renewal needs the support of the support OMA DRM of browser, needs wireless terminal to have the function of browser.Support in the prior art mobile phone of OMA DRM generally all integrated a browser, the related services such as carrying out browser, download of can surfing the Net.。For the wireless terminal that does not possess browser function, the media content on can't download network equally also just can't be supported OMA DRM protection.
Summary of the invention
Embodiments of the invention provide a kind of media file downloading method based on copyright management, Apparatus and system, are used for solving prior art can not be supported OMA DRM on the wireless terminal of not supporting browser function problem.
The embodiment of the invention provides a kind of media file downloading method based on copyright management, comprise, computer is connected with mobile communication terminal, by the definite download description document that will download of the browser of described computer, the browser of described computer receives downloaded files, described computer judges that the file that receives is to download description document or media file, if download description document, resolve described download description document, judge whether described download description document is legal, if legal then download description document from corresponding download server media file according to this, described computer sends described media file to described mobile communication terminal and stores.
The embodiment of the invention provides a kind of mobile communication terminal, comprising: receiving element is used for download description document and media file that receiving computer sends; Resolution unit is used to resolve described download description document; Transmitting element, whether the information in the download description document after resolving is returned to described computer legal to judge described download description document, and if legal then download description document from corresponding download server media file according to this.
The embodiment of the invention provides a kind of computer, comprises browser, processing module; Described browser downloads file, judge that the file that receives is to download description document or media file, if download description document, described processing module is resolved described download description document, judge whether described download description document is legal, if legal then control described browser to corresponding download server media file, and send described media file to mobile communication terminal according to described download description document.
The embodiment of the invention also provides a kind of media file download system based on copyright management, comprises mobile communication terminal, computer; Described mobile communication terminal is connected with described computer, described computer is used for controlling according to the user, call browser, downloads of media file corresponding download description document, receive downloaded files, judge that the file that receives is to download description document or media file, if download description document, resolve described download description document, judge whether described download description document is legal, if legally download described media file according to the content of downloading description document again, and send media file to mobile communication terminal, mobile communication terminal is used to store described media file.
The beneficial effect of the embodiment of the invention is, can make the mobile communication terminal downloads of media file of not supporting browser by the embodiment of the invention, and realizes that cost is low.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute limitation of the invention.In the accompanying drawings:
Figure 1 shows that the media file download business process map that typically has copyright information in the prior art;
Figure 2 shows that mobile communication terminal of the present invention utilizes the embodiment flow chart of downloaded media file method;
Figure 3 shows that the embodiment flow chart of computer receiving data of the present invention;
Figure 4 shows that mobile communication terminal of the present invention receives the embodiment flow chart of replying confirmation behind the media file;
Figure 5 shows that mobile communication terminal was bought copyright embodiment flow chart by computer when the present invention worked as OMA DRM employing SD mode;
Fig. 6 is mobile communication terminal example structure figure of the present invention;
Figure 7 shows that the structural representation of the computer-implemented example of the present invention;
Figure 8 shows that processing module example structure figure of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer,, the present invention is described in further details below in conjunction with execution mode and accompanying drawing.At this, exemplary embodiment of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
The embodiment of the invention provides a kind of media file downloading method based on copyright management, Apparatus and system.The present invention is described in detail below in conjunction with accompanying drawing.
Be illustrated in figure 2 as the embodiment flow chart that mobile communication terminal of the present invention utilizes downloaded media file method, comprise:
Step 201, mobile communication terminal is connected with computer.
Step 202, the user finds needs media files downloaded, downloads the download description document (DD:Download Descriptor) of this media file.The user searches out the media file that needs by media information on the Web browser view Internet of described computer, downloads this media file corresponding download description document.
Step 203, the browser of described computer is according to described download description document download of information media file.
Step 204, with described media file storage in described user's mobile communication terminal.
As one embodiment of the present of invention, in step 201, described computer can utilize cordless communication network, for example GPRS (GPRS:General Packet Radio Service), be connected with Download Server, seek the media file that the user needs, and the download in the step in the back, operation such as browsing can be based on described cordless communication network.
As one embodiment of the present of invention, in step 202, utilize the described DD file of browser downloads of described computer, the described DD file of described computer analyzing, and information such as the title of media file, cost of use are shown to the user, after the user confirmed, in step 203, the browser of described computer carried out the download of media file according to the DD file after resolving.
As one embodiment of the present of invention, in step 202, utilize the described DD file of browser downloads of described computer, connecting line by computer and mobile communication terminal, send this DD file to mobile communication terminal, by this mobile communication terminal described DD file is resolved, in step 203, described computer receives AT (A Ttention) instruction that described mobile communication terminal sends, comprise the media file URL(uniform resource locator) (URL:Uniform Resource Locator) that mobile communication terminal parsing DD file obtains in this AT instruction, computer calls browser and downloads described media file to corresponding URL.
As one embodiment of the present of invention, in the step 204, described computer can take File Transfer Protocol to send described media file to described mobile communication terminal, and mobile communication terminal is realized the server end of FTP, the client of computer realization FTP is to the server end upload file.
Be illustrated in figure 3 as the embodiment flow chart of computer receiving data of the present invention.
Comprise step 301, the browser of described computer receives downloaded files.
Step 302, described computer judge that the file that receives is DD file or media file, if the DD file enters step 304, if media file then enters step 303.
Step 303 sends described media file to the mobile communication terminal that is connected with described computer.
Step 304 is resolved described DD file.
Step 305, judge whether described DD file is legal, whether complete to this DD file, whether be that the conditions such as DD file of media content provider or service provider permission are carried out the judgement of legitimacy, if described DD file is legal then enter step 307, otherwise enter step 306.
Step 306, the display by computer reports an error to the user, and abandons this DD file.
Step 307 is extracted the information such as title, cost of use of media file from described DD file, the information of said extracted is shown to the user.
Step 308 show to be selected window on the display of described computer, the user selects whether will download this media file according to this selections window, if select download then enter step 310, otherwise enters step 309.
Step 309 abandons this DD file, and process ends.
Step 310 is called the browser of described computer, according to described DD file to corresponding download server media file.
As one embodiment of the present of invention, in step 303, described computer can take File Transfer Protocol to send described media file to described mobile communication terminal, and mobile communication terminal is realized the server end of FTP, the client of computer realization FTP is to the server end upload file.
As one embodiment of the present of invention, in step 304, this DD file of storage on described computer, described computer takes File Transfer Protocol to send described DD file to described mobile communication terminal, mobile communication terminal is resolved described DD file, and will resolve good DD file and send computer to.
Above method can be applied to FL and the CD mode of OMA DRM, and the user does not need to download copyright information from special copyright server once more when using media file, and has just obtained copyright information when the downloads of media file.
Be illustrated in figure 4 as mobile communication terminal of the present invention and receive the embodiment flow chart of replying confirmation behind the media file.
Result's report for the DRM file is installed needs Post to give Download Server, so that charge.Comprise: step 401, after mobile communication terminal installation medium file finishes, notify described computer to message of Download Server Post, the content of message is the installation results report, comprises success or failure information.For the result of failure, then need with the reason that goes up failure.
Step 402, described computer are created a socket and are connected, with Post message to Download Server.
Step 403, Download Server are returned the process information of installation results report.
Step 404, described computer returns to described mobile communication terminal with described process information.
Be illustrated in figure 5 as the present invention's mobile communication terminal when OMA DRM adopts the SD mode and buy copyright embodiment flow chart by computer.
Comprise step 501, computer sends instruction, carries out copyright and upgrades (to adopting the media file of SD method protection).
Step 502, the URL of the renewal copyright that described computer reception mobile communication terminal extracts from the media file head of SD protection.Mobile communication terminal receives the instruction that copyright is upgraded, and resolves media file, extracts the URL that upgrades copyright from the media file head.
Step 503 by the browser of computer, is opened corresponding copyright and is bought webpage, allows the user buy.
Step 504, the user determines to buy copyright.
Step 505, copyright server issue copyright and give described mobile communication terminal, preferably can adopt the mode of Push message to transmit this copyright information.
Be illustrated in figure 6 as the structural representation of mobile communication terminal embodiment of the present invention.
Comprise receiving element 601, be used for download description document and media file that receiving computer sends.
Resolution unit 602 is used to resolve described download description document.
Transmitting element 603 returns to described computer with resolving the information of downloading in the description document back.
Further, resolution unit 602 also is used to resolve media file, obtains the URL that upgrades copyright;
Described transmitting element 603 returns the URL that upgrades copyright to computer.
Described mobile communication terminal does not have browser function, is connected with computer by USB interface or with universal data interface.
Be illustrated in figure 7 as the structural representation of the computer-implemented example of the present invention.
Comprise processing module 701 and browser 702.
Described browser 702 is a browser common on the computer, can adopt IE (Internet Explorer) browser of Microsoft or the browser of other company.
The user is by the operation of described processing module 701 on described browser 702, obtain the DD file of download, the user calls the described browser 702 of processing module 701 controls again, and media file is downloaded, and processing module 701 sends this media file to described mobile communication terminal; When described mobile communication terminal returns the installation results report of media file, described processing module 701 is utilized the network of computer to connect and is sent this installation results report to Download Server, and the process information of this Download Server is returned to described mobile communication terminal; And can call browser 702 according to the media file on the described mobile communication terminal and be connected with copyright server, make described mobile communication terminal obtain copyright information.
Be illustrated in figure 8 as processing module example structure figure of the present invention.
Comprise communication interface 801, download description document (DD) resolution unit 802, authentication unit 803, extraction unit 804, call unit 805, report unit 806, copyright unit 807.
Described communication interface 801 is connected with mobile communication terminal with described Computer Browser, described extraction unit 804 is connected with described authentication unit 803, described authentication unit 803 is connected with described DD resolution unit 802, described DD resolution unit 802 is connected with described communication interface 801, described call unit 805 is connected with described browser, described report unit 806 is connected with described communication interface 801, and described copyright unit 807 is connected with described communication interface 801.
Described communication interface 801 is used for respectively and described Computer Browser and mobile communication terminal address.
Described DD resolution unit 802 is used for resolving on computers the DD file.
Described authentication unit 803 is used to verify whether the DD file of described DD resolution unit 802 parsings is legal.
Whether described extraction unit 804 is used for extracting for example information such as media file name, expenses standard from the DD file, and above-mentioned information is shown to the user, will download with for reference.
Described call unit 805 is used for the download command of assigning according to the user, according to the browser downloads media file of the media server call by location computer in the DD file.
Described report unit 806 is used for result's report that described mobile communication terminal is installed behind the described media file is returned to described Download Server, and the process information of this Download Server is sent to mobile communication terminal.
Described copyright unit 807 is used for if the user buys copyright by this successful connection, making described copyright server push copyright information to described mobile communication terminal according to being connected of the described computer of the information of described media file and copyright server.
The embodiment of the invention also provides a kind of media file download system based on copyright management, comprises mobile communication terminal, computer; Described mobile communication terminal is connected with described processing module, described computer is used for controlling according to the user, call browser, downloads of media file corresponding download description document, download described media file according to the content of downloading description document again, and send media file to mobile communication terminal.Mobile communication terminal is used to store described media file, also is used for further obtaining the URL that upgrades copyright from media file, downloads new copyright via computer notice copyright server; Also be used for the download description document that receiving computer is downloaded further, resolve, send the content of the download description document after resolving to computer.
The beneficial effect of the embodiment of the invention is, can make the mobile communication terminal of not supporting browser download the media file that is subjected to OMA DRM protection by the embodiment of the invention, and not be used in the hardware device that increases any costliness on this mobile communication terminal, realize that cost is low; Make full use of the use value of active computer.
Method and system of the present invention are applied to the mobile communication copyright protection at end; operator just can carry out the relevant business of DRM on the mobile communication terminal of not supporting browser (for example mobile phone, wireless Internet card etc.) under original Open Mobile Alliance digital copyright management (OMA DRM) server disposition; the protection copyright, the use of control media file.
Above-described embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is the specific embodiment of the present invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (12)

1.一种基于版权管理的媒体文件下载方法，其特征在于该方法包括，计算机与移动通信终端相连接，通过所述计算机的浏览器确定要下载的下载描述文件，所述计算机的浏览器接收下载的文件，所述计算机判断接收到的文件是下载描述文件还是媒体文件，如果是下载描述文件，解析所述下载描述文件，判断所述下载描述文件是否合法，如果合法则根据该下载描述文件从相应的下载服务器下载媒体文件，所述计算机将所述媒体文件传送给所述移动通信终端进行存储，所述计算机向所述移动通信终端发出版权更新的指令以进行版权更新，所述计算机接收移动通信终端从媒体文件头中提取的更新版权的统一资源定位符URL，所述计算机根据媒体文件的信息调用所述计算机的浏览器，建立所述计算机与版权服务器的连接，打开与所述更新版权的URL对应的版权购买网页，如果通过该连接成功购买版权，则所述版权服务器采用Push消息向所述移动通信终端推送版权信息。1. A method for downloading media files based on copyright management, characterized in that the method comprises that the computer is connected with a mobile communication terminal, and the browser of the computer determines the download description file to be downloaded, and the browser of the computer receives Downloaded files, the computer judges whether the received file is a download description file or a media file, if it is a download description file, parses the download description file, judges whether the download description file is legal, if legal, then according to the download description file Download the media file from the corresponding download server, the computer transmits the media file to the mobile communication terminal for storage, the computer sends a copyright update instruction to the mobile communication terminal to update the copyright, and the computer receives The mobile communication terminal extracts the uniform resource locator URL of updating copyright from the media file header, and the computer calls the browser of the computer according to the information of the media file, establishes the connection between the computer and the copyright server, and opens the URL related to the update. The copyright purchase webpage corresponding to the URL of the copyright, if the copyright is successfully purchased through the connection, the copyright server pushes the copyright information to the mobile communication terminal by using a Push message. 2.根据权利要求1所述的一种基于版权管理的媒体文件下载方法，其特征在于，在通过所述计算机的浏览器确定要下载的下载描述文件的步骤中，所述计算机的浏览器通过无线通信网络浏览并下载所述下载描述文件。2. a kind of method for downloading media files based on copyright management according to claim 1, characterized in that, in the step of determining the download description file to be downloaded by the browser of the computer, the browser of the computer passes The wireless communication network browses and downloads the download description file. 3.根据权利要求2所述的一种基于版权管理的媒体文件下载方法，其特征在于，在解析所述下载描述文件的步骤中包括，所述计算机上解析所述下载描述文件，获得下载描述文件内的信息。3. A kind of method for downloading media files based on copyright management according to claim 2, characterized in that, in the step of parsing the download description file, comprising, parsing the download description file on the computer to obtain the download description information within the file. 4.根据权利要求2所述的一种基于版权管理的媒体文件下载方法，其特征在于，在解析所述下载描述文件的步骤中包括，将所述下载描述文件传送给所述移动通信终端，移动通信终端对所述下载描述文件进行解析并传送给计算机，所述计算机获取下载描述文件内的信息。4. a kind of media file download method based on copyright management according to claim 2, is characterized in that, comprises in the step of parsing described download description file, described download description file is sent to described mobile communication terminal, The mobile communication terminal parses the download description file and sends it to the computer, and the computer obtains the information in the download description file. 5.根据权利要求3或4所述的一种基于版权管理的媒体文件下载方法，其特征在于，所述从相应的下载服务器下载媒体文件的步骤前还包括，提取所述下载描述文件中关于所述媒体文件的信息，并将该信息显示给用户，以确定是否要下载该媒体文件。5. A kind of method for downloading media files based on copyright management according to claim 3 or 4, characterized in that, before the step of downloading media files from the corresponding download server, it also includes extracting information about The information of the media file is displayed, and the information is displayed to the user to determine whether to download the media file. 6.根据权利要求1或2所述的一种基于版权管理的媒体文件下载方法，其特征在于，所述移动通信终端与所述计算机进行数据传输采用文件传输协议。6. A method for downloading media files based on copyright management according to claim 1 or 2, characterized in that, the data transmission between the mobile communication terminal and the computer adopts a file transfer protocol. 7.根据权利要求1所述的一种基于版权管理的媒体文件下载方法，其特征在于，将所述媒体文件传送给所述移动通信终端进行存储的步骤后还包括，所述移动通信终端安装所述媒体文件，并向所述计算机返回安装结果报告，所述计算机通过所述浏览器将该安装结果报告发送给下载服务器，并将所述下载服务器返回的处理信息发送给所述移动通信终端。7. A kind of method for downloading media files based on copyright management according to claim 1, characterized in that, after the step of storing said media files to said mobile communication terminal, said mobile communication terminal also includes: the media file, and return an installation result report to the computer, the computer sends the installation result report to the download server through the browser, and sends the processing information returned by the download server to the mobile communication terminal . 8.一种移动通信终端，其特征在于，所述移动通信终端包括：8. A mobile communication terminal, characterized in that the mobile communication terminal comprises: 接收单元，用于接收计算机传送过来的下载描述文件和媒体文件，以及接收所述计算机发出的版权更新的指令；The receiving unit is used to receive the download description file and media file sent by the computer, and receive the copyright update instruction sent by the computer; 解析单元，用于解析所述下载描述文件，以及从媒体文件头中提取的更新版权的统一资源定位符URL；A parsing unit, configured to parse the download description file and the Uniform Resource Locator URL for renewing the copyright extracted from the media file header; 发送单元，将解析后的下载描述文件内的信息返回给所述计算机以判断所述下载描述文件是否合法，以及如果合法则根据该下载描述文件从相应的下载服务器下载媒体文件，将所述更新版权的URL发送给所述计算机，通过与所述更新版权的URL对应的版权购买网页购买版权，在成功购买版权后接收所述版权服务器采用Push消息推送的版权信息。The sending unit returns the information in the analyzed download description file to the computer to determine whether the download description file is legal, and if it is legal, downloads the media file from the corresponding download server according to the download description file, and updates the The copyright URL is sent to the computer, the copyright is purchased through the copyright purchase web page corresponding to the copyright update URL, and the copyright information pushed by the copyright server through a Push message is received after the copyright is successfully purchased. 9.一种计算机，其特征在于该计算机包括，浏览器，处理模块；9. A computer, characterized in that the computer includes a browser and a processing module; 所述浏览器下载文件，判断接收到的文件是下载描述文件还是媒体文件，如果是下载描述文件，所述处理模块解析所述下载描述文件，判断所述下载描述文件是否合法，如果合法则根据所述下载描述文件控制所述浏览器到相应的下载服务器下载媒体文件，并将所述媒体文件传送给移动通信终端；The browser downloads the file, and judges whether the received file is a download description file or a media file. If it is a download description file, the processing module parses the download description file to determine whether the download description file is legal. If it is legal, then according to The download description file controls the browser to download the media file from the corresponding download server, and transmits the media file to the mobile communication terminal; 其中，所述处理模块还包括，通信接口，下载描述文件解析单元，调用单元和版权单元；Wherein, the processing module further includes a communication interface, a download description file parsing unit, a calling unit and a copyright unit; 所述通信接口，用于所述浏览器与移动通信终端的通信接口；The communication interface is used for the communication interface between the browser and the mobile communication terminal; 所述下载描述文件解析单元，用于解析所述下载描述文件以获得所述下载描述文件的内容信息；The download description file parsing unit is configured to parse the download description file to obtain content information of the download description file; 所述调用单元，用于根据用户的指令调用所述浏览器根据下载描述文件的内容信息下载媒体文件；The calling unit is used to call the browser to download the media file according to the content information of the download description file according to the user's instruction; 所述版权单元，用于向所述移动通信终端发出版权更新的指令以进行版权更新，接收移动通信终端从媒体文件头中提取的更新版权的统一资源定位符URL，根据媒体文件的信息调用所述计算机的浏览器，建立所述计算机与版权服务器的连接，打开与所述更新版权的URL对应的版权购买网页，如果通过该连接成功购买版权，则使得所述版权服务器采用Push消息向所述移动通信终端推送版权信息。The copyright unit is configured to send a copyright update instruction to the mobile communication terminal to update the copyright, receive the URL of the updated copyright extracted from the media file header by the mobile communication terminal, and call the URL according to the information of the media file. The browser of the above-mentioned computer establishes the connection between the computer and the copyright server, opens the copyright purchase webpage corresponding to the URL for updating the copyright, and if the copyright is successfully purchased through the connection, the copyright server uses a Push message to send the copyright to the copyright server. The mobile communication terminal pushes copyright information. 10.根据权利要求9所述的计算机，其特征在于所述处理模块还包括，提取单元；10. The computer according to claim 9, wherein the processing module further comprises an extraction unit; 所述提取单元，用于提取所述合法的下载描述文件中的信息，显示给用户，以便确定是否要下载该媒体文件。The extracting unit is used to extract the information in the legal download description file and display it to the user so as to determine whether to download the media file. 11.根据权利要求9所述的计算机，其特征在于所述处理模块还包括，报告单元；11. The computer according to claim 9, wherein the processing module further comprises a reporting unit; 所述报告单元，接收所述移动通信终端安装媒体文件的安装结果报告，向所述下载服务器返回所述安装结果报告，并将该下载服务器的处理信息发送给移动通信终端。The reporting unit receives the installation result report of the media file installed by the mobile communication terminal, returns the installation result report to the download server, and sends the processing information of the download server to the mobile communication terminal. 12.一种基于版权管理的媒体文件下载系统，其特征在于，包括权利要求8所述的移动通信终端，权利要求9-11中任一项所述的计算机和版权服务器；所述移动通信终端与所述计算机相连接，所述计算机用于根据用户控制，调用浏览器，下载媒体文件对应的下载描述文件，接收下载的文件，判断接收到的文件是下载描述文件还是媒体文件，如果是下载描述文件，解析所述下载描述文件，判断所述下载描述文件是否合法，如果合法再根据下载描述文件的内容下载所述的媒体文件，并将媒体文件传送给移动通信终端，移动通信终端用于存储所述媒体文件；所述计算机还用于向所述移动通信终端发出版权更新的指令以进行版权更新，接收所述移动通信终端从媒体文件头中提取的更新版权的统一资源定位符URL，根据媒体文件的信息调用所述计算机的浏览器，建立所述计算机与版权服务器的连接，打开与所述更新版权的URL对应的版权购买网页；所述版权服务器，用于如果通过该连接成功购买版权，则采用Push消息向所述移动通信终端推送版权信息。12. A kind of media file downloading system based on copyright management, it is characterized in that, comprises the mobile communication terminal described in claim 8, the computer and copyright server described in any one of claim 9-11; Described mobile communication terminal Connected with the computer, the computer is used to call the browser according to user control, download the download description file corresponding to the media file, receive the downloaded file, and judge whether the received file is a download description file or a media file. description file, analyze the download description file, judge whether the download description file is legal, if it is legal, download the media file according to the content of the download description file, and transmit the media file to the mobile communication terminal, and the mobile communication terminal is used for Storing the media file; the computer is also used to send a copyright update instruction to the mobile communication terminal to update the copyright, and receive the URL of the updated copyright that the mobile communication terminal extracts from the media file header, Call the browser of described computer according to the information of media file, set up the connection of described computer and copyright server, open the copyright purchase webpage corresponding with the URL of described update copyright; copyright, push the copyright information to the mobile communication terminal by using a Push message.
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