TW200539646A - Media data protection method and system thereof - Google Patents

Abstract

The present invention provides a media data protection method to be executed on a mobile communication terminal and a server, wherein the mobile communication terminal could have wireless communication with the server. The method includes the following steps: first, sending a media download request from the mobile communication terminal for request of downloading a media data; receiving the media download request on the server; generating a description file, a media protection file, and a copyright message file for the media data on the server based on the media download request; the description file including the media protection file, and the download address for the copyright message file; and, the media protection file including the encrypted media data; and, the copyright message file including the decryption key for decrypting the media protection file; and, sending the description file to the mobile communication terminal on the server; and, receiving the description file from the server on the mobile communication terminal.

Description

Some media content providers develop their own special formats that are the same as the standards. The mobile phone must comply with the above-mentioned special, 4: type media materials in accordance with the above special format. Although this method can open the possibility of being copied, it also hinders mobile power ^ = reduction. Interaction of ancient media materials 200539646 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to mobile communication terminals, and in particular, to a method and system for media protection and download of mobile communication terminals. [Previous Technology] Traditionally, mobile phones can use the Hypertext Transmission Protocol (HTTP) and the Wireless Applications Protocol (WAP) to download media data from the Internet through a wireless network. However, downloaded media material is unprotected plaintext material. Without the protection of media data, mobile phone users can: Forward the downloaded media data to other mobile phones. Even high-quality media materials can be copied unlimitedly by users. Question: Therefore, there is a need for a method of protecting media materials, and the problem of media materials being copied indefinitely. ^ Take the above

[Summary of the Invention] In view of this method, the purpose of the present invention is to provide a

A method for protecting media data A method for protecting media data, the above-mentioned mobile communication terminal, and based on the above object, the present invention provides a mobile communication terminal and a server

200539646

The server performs wireless communication. A media download request is developed for a server to receive the media download request and generate the above-mentioned body-protected file, and a copyright information media-protected file and the above-mentioned copyright-protected file containing the encrypted above-mentioned content for the above-mentioned The media protection server transmits the file described above to the mobile communication terminal. From the above server, the present invention further provides a server. First, from the mobile newsletter, according to the above media download request, media protection files, and copyrights. The media protection building case and the above version of the media protection file contain encrypted files and are used to protect the media. First, at the above mobile communication terminal, request to download a media material. In the above request. In the above server, according to a description file and a file of the media information. The above description file contains the download address of the above information. The above media media information. The above-mentioned copyright information file solution and decryption gold records. In the above, the above-mentioned terminal is at the mobile terminal. Receive the above description file on the above line. A media data protection method is executed when a terminal receives a media download request. Then, generate a description of the above media information. The above description of the slot case contains the download address of the right case. The above mentioned media information. The above copyright message protects the decryption key for file decryption. Transfer terminal.

In addition, the present invention further proposes a method for protecting media materials, which is implemented in a mobile communication terminal. Send a media download request to the server to request download of media data. A description file is received from the server, wherein the description file includes a download address of a media protection file and a copyright message file. The media protection file contains the encrypted media material. The copyright message file contains a decryption key used to decrypt the media protection file.

0685-A40147TWF (nl); IAC030174; Joseph.ptd 200539646 V. Description of the invention (3) According to the download address of the above-mentioned media protection file in the above-mentioned file, send a request for downloading the protected media for downloading the above-mentioned media protection file. Receive the aforementioned media security archives. According to the download address of the copyright message file in the above description file, a copyright download request is sent to download the copyright message broadcast case. Receive the above copyright message slot. In addition, the present invention further provides a media data protection system. The media information and protection system includes a feeding device and a mobile communication terminal for wireless communication with the server. The server receives a media download request from the mobile communication terminal, and according to the media download request, generates a description file of the media information, a media protection broadcast case, and a copyright message. The description cannot contain the above-mentioned woman ㈣The download address of the broadcast case and the above copyright U case. The media protection case mentioned above contains the encrypted media data. The above copyright message file contains a decryption key for file decryption. The above-mentioned servos cried out to check, and, L 4 media security only mobile communication terminal. The above description file is transmitted to the above. [Embodiment] The present invention provides a media data protection method and a data protection system. J ^ The structure of the media data protection system is shown in the figure. U f V / communication terminal 10, wireless application communication protocol (gate 15, and ㈣ & 20. Mobile communication terminal 1Q browse function and wireless network communication function Jiuyongbayou Media Hill · Zhiliang 4 ^, various mobile communication devices such as mobile phones or personal digital assistants. Mobile memory 4 and a browser 丨 丨^ Recording and decoding media information 1 0685-A40147TWF (nl); I ACX) 30174; Jos eph.pt d p. 7 200539646 V. Description of the invention (4). The wireless application protocol gateway 15 is the same as the traditional wireless application protocol gateway used to connect the mobile communication terminal 10 and the server 2 and can perform user authentication (e n d — u s er authentication) of the mobile communication sfL device. The server 20 includes an encryption key 135 and a media database 21 for storing media data, which includes media data. Media material 100 can contain various media, such as games, still images, moving images, music, or articles. In the present invention, media materials that conform to the Multipurpose Internet Mail Extensions (MIME) specifications are taken as an example, but it is not intended to limit the present invention. The wireless application protocol gateway 15 connects to the server 20 via the Internet. The mobile communication terminal 10 can connect to the wireless application protocol gateway 15 via a wireless network. u

The media data protection method of the present invention can be executed on the mobile communication terminal i 0 and the server 20. When the mobile communication terminal 10 and the server 20 perform wireless communication, the mobile communication terminal 10 performs wireless communication with the server 20 via the wireless application protocol gateway 丨 5. The transmission of messages between the mobile communication terminal 丨 〇 and the server 2 〇 is through the wireless application protocol gateway 丨 5. Therefore, the following information and data transmission will not repeat the wireless application protocol gateway 5. In the present invention, the mobile communication terminal 10 and the server 2 0 use the Wireless Application Protocol (WAP) for wireless communication. However, they are not intended to limit the present invention. The present invention can also be applied to data transmission protocols supported by any mobile communication terminal. FIG. 2 shows a flowchart of the media data protection method of the present invention.

0685-A40147TW (nl); IAC030l74; Joseph.ptd p. 8 200539646

The mobile communication terminal 10 sends a media download request to the server 2 to request download of the media material 100 (step S2). The server 20 receives the media download request (step S4). The server 20 generates a description file of the media data according to the media download request, a media protection broadcast 120, and a copyright information broadcast 130 (step S6). In the present invention, the way in which the server 20 receives the media download request and regenerates the planting case described above can avoid a large workload of converting all the media data in advance. Moreover, the generation of copyright information can be controlled individually, that is, different users download at different times, and the copyright information can be different. If all media are converted before receiving the above media download request, a lot of conversion work must be done before downloading. ,

FIG. 3 is a schematic diagram of a description file of the present invention. Description file ιι〇 丨 Contains download information of media protection files 11 1. Download information of copyright information file U and introduction information 113 of media materials 100. The description file 11〇 also; r to contain other more information. Media protection file download information 丨 丨 丨 Contains the address information of the body protection file 120. Copyright information file download information 112: contains the address information of the copyright information file 130. For example, if the server 20 generates and stores the media protection file 12 and the copyright information file 2 in the state memory itself, then the media protection file download information 11 working rights message file download information 11 2 includes the server. 2 〇 address, and contains the path information of the media protection file 120 and copyright information file 13。 Please note that it is not intended to limit the invention. For example, the servo can also be coupled to other servers, such as the first server and the benefit server. If the server 20 generates and separately stores media protection files 12101 and +

200539646 V. Description of the invention (6) Copyright δ ΐ Interest slot case 1 3 0 In the memory of the first server and the second server, the media protection file download information 111 and the copyright information file download information 11 2 include media protection In addition to the path information of the file 12 and the copyright message file 130, the addresses of the first server and the second server are included. Introduction Information 3 3 Records an introduction to the media materials 1 00. The user of the mobile communication terminal 10 can read the introduction information 丨 3 to decide whether to download the media protection file 1200, and FIG. 4 shows a schematic diagram of the media protection broadcasting scheme of the present invention. The media protection file 120 includes a MIME type length field 121, a MIME type field 122, an encrypted data length field 123, and an encrypted data field 124. No matter what type of media material 100 is, the same MIM E type of media protection file can be generated after encoding and encryption by the server 20. The server 2 can use various encoding methods to encode the media data, such as binary encoding and U U encoding (U U-e n c 〇 d e). The length field of the M I ME type 1 2 1 is used to record the length of the M ME type of the media information. The MIME type field 122 is used to record the MIM E type of the media material. The encrypted data length field 1 2 3 is used to record the length of the encrypted data 1 2 4. The encrypted data 124 is generated by the server 20 encrypting the media data 100 with an encryption key 35. Encrypted data 1 2 4 Records encrypted media data 100. However, the media protection file 120 may also contain other information. FIG. 5 is a schematic diagram of a copyright message file of the present invention. Copyright information Building case 130 includes a decryption key 131 and media copyright 132. Decryption Golden Record 1 3 1 is used to decrypt encrypted data 1 2 4. The media copyright 1 3 2 may contain information on the expiration date of the media material 100. However, copyright information files 丨 3 〇 are also available

0685-A40147TWF (nl); IAC030174; Joseph.ptd Page 10 200539646 V. Description of the invention (7) to contain other more information, such as the regulations on the use of media materials. After the media protection file 12 and the copyright message file 130 are generated, the server 20 can store the media protection file 120 and the copyright message file 130 in the memory of the server 20 or separately. On a different server. Next, the 'server 20 transmits the above-mentioned description file 110 to the mobile communication terminal 10 (step S8). The mobile communication terminal 10 receives the description file 1 from the server 20 (step S10). The description file 101 can be represented as a page, for example, a page conforming to Extensible Markup Language (XML), Wireless Markup Language (WML). The mobile communication terminal 10 can use a browser to display a page describing the case 110. The user of the mobile communication terminal 丨 〇 can view the page describing the file 010 and decide whether to download the media protection file 丨 20 or the copyright message file 130. If it is decided to download the media protection file 丨 20, the mobile communication terminal j 〇 sends a protection media download request according to the media protection file download information in the file described above n to download the media protection file 丨 2〇 (step S1 2). After receiving the request for downloading the protected media (step S14), the server 20 transmits the media protection broadcast case 120 to the mobile communication terminal 1Q (step g 1 6).

The mobile communication terminal 10 receives the media protection file 丨 2 〇 from the server 20 (step S18), and stores the media protection file 丨 20 in the memory 4. If you never want to download the copyright message file 1 3〇. Mobile communication terminal 1 〇 Send a copyright download request for downloading the copyright message file 1 3 〇 according to the copyright information file download information in the file 11 〇 described above (steps)

200539646 V. Description of Invention (8) S20). After the server 20 receives the copyright download request (step s 2 2), it sends the copyright message file 130 to the mobile communication terminal 丨 0 (step S 2 4). The mobile communication terminal 10 receives the copyright message file 130 from the server 20 (step S26), and stores it in the memory 4. The mobile communication terminal 10 decrypts the media protection slot case 120 (step S 2 8) by using the above copyright information file 丨 30, and decodes it to generate media data 100. More specifically, the mobile communication terminal uses the decryption key 131 to decrypt the encrypted data 124. The mobile communication terminal 10 then opens, displays or plays the media data 100 using the browser 11. The term information is used to limit the life of media-protected files. When the mobile communication terminal 10 decrypts the media protection file 1 2 0 with the copyright information file 1 3 0, the use time of the decrypted media material i 0 0 is restricted according to the time limit information, for example, the time limit information is recorded in the media data 1 0 0 Data structure. Each time the mobile terminal 100 plays the media data 100, it must first determine whether the media data 100 has expired. In this case, there is no limit to the number of times the copyright information is used. It only needs to be used when decrypting the media protection file 120. In the future, the mobile terminal §fL terminal 10 will control the use of the media material 100 according to the time limit information that has been set. However, the copyright information file 13 of the present invention may use different methods to protect the media material 100. For example, mobile communication terminals are restricted from storing decrypted media data 100 individually. Whenever the mobile communication terminal 10 wants to open the media data 1Q0, it needs to use the copyright message file 130 to decrypt the media protection broadcast 20 and generate the media data 100. Moreover, mobile communication terminals cannot

0685-A40147TWF (nl); IAC03〇i74; Joseph.ptd page 12 200539646 V. Description of the invention (9) Outgoing news. To control the invention by means of media edition restrictions, there is no toll gate. Therefore, after the protection of media resources, it is arbitrarily limited. Although this scope is limited to the present invention and the scope, the scope should be considered later. This can prevent media materials from being copied arbitrarily. The right 1 3 2 may also include a limit on the number of uses. The number of uses of the media material 1 0 0 is within a predetermined number of uses. The media data protection method can be combined with the charging line application protocol idler 15 or feeder 2. In this way, the download requester of the media poor material 00 can be charged. The media data protection method and system of the present invention of the present invention can prevent the media data from being copied on the mobile communication terminal; The download invention has been disclosed as above with preferred embodiments. Anyone who is familiar with this skill will not leave: Invention: It can be used for various changes and retouching, so it is defined by the scope of & patent attached to God. Subject to protection

200539646 Brief Description of Drawings Figure 1 shows a schematic diagram of the structure of the media data protection system of the present invention. FIG. 2 shows a flowchart of the media data protection method of the present invention. FIG. 3 is a schematic diagram of a description file of the present invention. FIG. 4 shows a schematic diagram of a media protection file of the present invention. FIG. 5 is a schematic diagram of a copyright message file of the present invention. [Symbol description] 4 ~ memory; 10 ~ mobile communication terminal; 11 ~ browser; 15 ~ wireless application protocol gateway; 20 ~ server; 2 1 ~ media database; I 0 0 ~ media data ; II 0 ~ description file; 11 1 ~ download information of media protection file; 11 2 ~ download information of copyright information file; 11 3 ~ introduction information; 1 2 0 ~ media protection file; 121 ~ MIME type length field; 1 2 2 ~ Μ IM E type field; 1 2 3 ~ encrypted data length field; 1 2 4 ~ encrypted data;

0685-A40147TWF (nl); IAC030174; Joseph.ptd page 14 200539646 Brief description of the drawings 1 3 0 ~ copyright information file; 1 3 1 ~ decryption key; 1 3 2 ~ media copyright; 135 ~ encrypted gold record. 0685-A40147TWF (nl); IAC030174; Joseph.ptd page 15 1

Claims (1)

200539646 6. The scope of the patent application is to protect one type of physical data protection method, which is executed on a mobile communication terminal and message, including the following quotes: The wireless communication σ correction step between the mobile communication terminal and the above server is as follows: Server, use ΐ = The communication terminal 'sends a media download request to the above-mentioned feed and Mingqiu to download a media material; 52 twelve server, receives the above-mentioned media download request; the body data ^ ϊΐ / Gen according to the above-mentioned media download request' generates the above-mentioned media The case of Li Zhongshang, f 4 * 田 ·, a media protection file, and a copyright information file information right case includes the above-mentioned media protection building case and the above-mentioned copyrighted media materials. The file contains the encrypted 'decryption' key for decrypting the upper file; the 5fL message file contains the above-mentioned media protection server's case to the above-mentioned mobile communication case. 1. The “automatic communication terminal” receives the above-mentioned description file from the above-mentioned server. 2. If the scope of the patent application is inclusive, it further includes the following steps: 1. The method for protecting the media data described above, at the download address of the worm protection file of the mobile communication terminal, Send 7 to download the media protection archives as described above in the archives described above; ^ a protection media download request for the above mobile communication terminal 3 · If the patent application scope is second, the media protection archives are described. It also includes the following steps ... The method for protecting media materials, described in 0685-Α40147 (η 1); IAC030174; Joseph · ptd Page 16 200539646 6. Scope of patent application --- in the above mobile communication terminal right The download address of the message file, according to the above-mentioned version of the above-mentioned copyright information file in the above-mentioned description file; and i—a copyright download request for downloading in the above-mentioned mobile communication terminal. file. The method further includes the following steps of the method for protecting media data: In the above mobile communication terminal, the physical protection file is decrypted to generate the above, +, and the above-mentioned copyright information file for media, ^^ 王 上 兔 media data. 5. According to the scope of application for patents j and Ye, wherein the media information protection method described by the above copyright information file owner, 6. A media data protection ^ The above-mentioned media materials use period. The steps are as follows: A method is executed on a server, including receiving a media data from a mobile communication terminal; a media download request is used to request a card download file, a media protection file, and a media downloader, A description file that generates the above media information includes the above-mentioned media protection archives f 杻 message file, where the above-mentioned description address, the above-mentioned media protection file package, and the above-mentioned copyright information file are downloaded. The above-mentioned media information, the above-mentioned key; and the decryption money for the decryption of the media protection broadcast case transmit the above-mentioned description file to the previous 7 'by ^ 主 * 立 丨 # m 疋 order the communication terminal. 7 · The following steps are included in the 6th scope of Shen Qing's patent scope: the media data protection method described in item, to download the above media protection file Received from the above mobile communication terminal 200539646 6. A request for downloading a protected media within the scope of a patent application; and sending the aforementioned media protection file to the aforementioned mobile communication terminal. 8. The method for protecting media data as described in item 7 of the scope of patent application, further comprising the following steps: receiving a copyright download request for downloading the copyright information slot from the mobile communication terminal; and sending the copyright information file to The above mobile communication terminal. 9. A method for protecting media data, executed on a mobile communication terminal, including the following steps: sending a media download request to a server for requesting downloading of media data; receiving a description file from the server, wherein The description file contains the download address of a media protection file and a copyright message file. The media protection slot contains the encrypted media data. The copyright message file contains a decryption key for decrypting the media protection file. Describe the download address of the media protection file in the file, send a download request for the protected media to download the media protection file; receive the media protection file; according to the download address of the copyright message file in the description file, Send a copyright download request to download the copyright message file; and receive the copyright message audit. 10 · The method for protecting media data as described in item 9 of the scope of patent application, further comprising the following steps: The above-mentioned copyright information file is used to decrypt the media protection file to generate 0685 ^ 401471 ^ (111); IAC030174; Joseph.ptd ^ page " ----- 200539646 The above media materials. π The method for protecting media data as described in item 9 of the scope of patent application, wherein the copyright information file describes the period of use of the media data 12. One kind of media data protection: 1 includes: a mobile communication terminal; and a feeding service The device is used for wireless communication with the mobile communication terminal, wherein the server receives a media download request from the mobile communication terminal, and generates a description file, a media protection file, And a copyright message file, wherein the description file includes the media protection broadcast case and the download address of the copyright message file, the media protection case file contains the encrypted media data, and the copyright message file contains the protection for the media. The solution to the file decryption is as follows, and the server transmits the description to the mobile communication terminal. 1 3 · The media data protection system according to item 2 of the patent application scope ', wherein the server receives a protected media download request for downloading the media protection slot from the mobile communication terminal, and sends the media protection Broadcast the case to the above mobile communication terminal. 1 4. The media data protection system according to item 3 of the patent application scope, wherein the server receives a copyright download request to download the copyright message file from the mobile communication terminal, and sends the copyright message file To the above mobile communication terminal. 1 5 · The media data protection system described in item 4 of the patent application scope, wherein the mobile communication terminal uses the copyright information file to 0685-A40147TW (nl); IAC030174; Joseph.ptd page 19 200539646 6. Scope of patent application Media protection archives are decrypted to generate the above media materials. 16. The media data protection system according to item 12 of the scope of patent application, wherein the copyright information file includes a period of use of the media data. 0685-A40147TW (η 1); IAC030174; Joseph. Ptd page 20