TWI252663B - Method and system for protecting media data - Google Patents

Abstract

A method for protecting media data is executed on a mobile communication terminal and a server, in which the mobile communication terminal and the server perform wireless communication therebetween. The invented method comprises: sending a media to download the request from the mobile communication terminal for requesting to download a media data; using the server to receive the media download request; using the server to produce a description file, a media protection file, and a copyright information file, of the media data according to the media download request, in which the description file includes the download addresses of the media protection file and the copyright information file, the media protection file includes the media data after encryption, and the copyright information file includes a decryption key for decrypting the media protection file; using the server to transmit the description file to the mobile communication terminal, and using the mobile communication terminal to receive the description file.

Description

1252663 V. INSTRUCTION DESCRIPTION (1) <Technical Field of the Invention] The present invention relates to a mobile communication terminal, and more particularly to a method and system for media protection and downloading of a mobile communication terminal. [Prior Art] Traditionally, a mobile phone can use the Hypertext Transmission Protocol (HTTP) and the Wireless Application Protocol (WAP) to download media data from the Internet through a wireless network. However, the downloaded media materials are unprotected plaintext materials. In the case of protection, the use of the deleted words 4 will be used to forward the downloaded media data to other mobile phones. Even media materials with high gastric value will be unrestricted by the user. Some media content providers will make their own special formats that differ from standard media formats. The mobile phone must meet the above special format to open media materials that meet the above special format. This approach can reduce the possibility of media being copied, but it also hinders the interoperability of mobile phone media material. Therefore, there is a need for a method of protecting media materials to overcome the problem of unrestricted copying of the aforementioned media materials. SUMMARY OF THE INVENTION In view of the above, the object of the present invention is to describe a method for protecting a media data protection method for a media data protection method, 'the above mobile communication terminal and based on the above purpose, the present invention provides ~ Mobile communication terminal and a server

0685-A40147TWF(nl); IAC030174; Joseph.ptd Page 5 1252663 V. Description of the invention (2) The above server performs wireless communication. First, in the mobile communication terminal, a media download request is sent to request to download a media material. Receiving, by the server, the media download request, the server, according to the media download request, generating a description file, a media protection file, and a copyright message file of the media data. The above description file contains the above-mentioned media protection file and the download address of the above copyright information file. The above media protection file contains the encrypted media material. The above copyright message file contains a decryption key for decrypting the above media protection file. In the above servo, the above description file is transmitted to the mobile communication terminal. At the above-mentioned mobile communication terminal, the above description file is received from the above server. In addition, the present invention further provides a media data protection method that is executed on a server. First, a media download request is received from the mobile communication terminal. Then, according to the media download request, the description file of the media material, the media protection file, and the copyright message file are generated. The above description file contains the above-mentioned media protection file and the download address of the above copyright information file. The above media protection file contains the encrypted media material. The above copyright message file contains a decryption key for decrypting the above media protection file. Transmission The above description is directed to the above mobile communication terminal. In addition, the present invention further provides a media data protection method, which is implemented in a mobile communication terminal. Send a media download request to the server to request the media data. The description file is received from the server, wherein the description file includes a media protection file and a download address of a copyright message file. The media protection file includes the encrypted media material. The above copyright message file contains a decryption key for decrypting the above media protection file.

0685-A40147TWF(nl); IAC030174; Joseph.ptd Page 6 1252663 V. Description of invention (3) According to the download address of the above media protection file in the above description file, send. Protect media download request to download the above media protection file. Receive the above media protection file. According to the download address of the copyright information file in the above description file, a copyright download request is sent for downloading the copyright information file. Receive the above copyright message file. In addition, the present invention further provides a media data protection system. The media data protection system includes a server and a mobile communication terminal for wirelessly communicating with the server. The server receives a media download request from the mobile communication terminal, and generates a description file, a media protection file, and a copyright information file of the media data according to the media download request. The above description file contains the above-mentioned media protection 'file and the download address of the above copyright information file. The media protection file includes the encrypted media material. The copyright information file includes a decryption key for decrypting the media protection file. The server transmits the above description file to the mobile communication terminal. [Embodiment] The present invention provides a media data protection method, which can be implemented in a media data protection system. Fig. 1 is a view showing the construction of a media material protection system of the present invention. The first diagram includes the mobile communication terminal 10, the wireless application communication protocol, the gateway device 15, and the server 20. The mobile communication terminal 10 can be various mobile communication devices having a media browsing function and a wireless network communication function, such as a mobile phone or a personal digital assistant. The mobile communication terminal 10 includes a memory 4 and a browser 1 1 for reading, decoding, and playing media resources.

0685-A40147TWF(nl); IAC030174; Joseph.ptd Page 7 1252663 V. Description of invention (4) Material. The Wireless Application Communication Association's Japan-Japan-Japan Protocol Gateway is used to connect one: this device] 5 is like a traditional wireless application communication implementation mobile communication device ί = communication terminal IG and servo 1120, and can be ar clothing user authentication (end- User authentication) 〇/闩郎- 欠柯庙9 1 m ; Sentencer 2 0 contains encryption key 1 35 and a 婼 tributary library 2 1 for storing media w : 1U media

Mr Ψ Minn a month of bean and shell material 'which contains media information 1 〇 〇. The MediaBecker 100 can contain a variety of: shadows, motion pictures, music, or articles. In the present invention, 1 is 1, and the Internet mail extension is used (Multipurpose lnternet MaU

The media material of the Extensions (MIME) specification is taken as an example, but the policy is not intended to limit the present invention. /, the sub-wireless application protocol protocol gateway 丨5 via the Internet connection server cry: set: ϊ ... &quot; to connect to the wireless application via the wireless network = and wait: ': two: physical data protection method can be executed In the mobile communication terminal 1. The servo is 20. The mobile communication terminal 1 and the server 2 communicate with each other. The mobile communication terminal 10 is wirelessly communicated via the wireless application communication protocol gateway. The message of the mobile communication terminal 1G and the server 20 is the wireless application communication protocol interrogator 15. Therefore, the following message and "]: transmission: no longer use the wireless application protocol to open the channel. In this: rw] Α Α communication terminal 10 and server 2. Use wireless application communication communication, however, it is not limited This document; c. / the Bank" Any information supported by the mobile communication terminal;;: Association: The invention can also be applied to Figure 2 to show the flow chart of the media data protection method of the present invention. 0685-A40147TWF(nl); IAC030174; Joseph.ptd Page 8 1252663 V. Invention Description (5) Mobile Communication Terminal 〇 Send a media Request to download media data 丨〇 〇 (step s2). %, to the server 20 using j; the server 20 receives the above media download, according to the above media download request, the above step S4). Server 2〇 1 1 0, a media protection file] 2 〇, and a _ body description file S6). In the present invention, the server 2 is in the * seventh-party file 130 (after the step, the manner of generating the above-mentioned file can avoid the large workload of downloading the request material. Moreover, the copyright first converts all the media resources, that is, different users. Time download, version ▲ students can be controlled individually, in the reception of the above media download please go two '' can be different. If you need to do a lot of conversion work before downloading, then all the media will be converted first, Figure 3 shows the description of the present invention The file contains the media protection file download information lu, the version refers to the description file 110 package and the media information 100 to cut through the file download information 112 contains other more information. Media, physical insurance = Zai ^ building case 110 can also The address information of the physical protection file 120. The copyright information, self-contained Beixun U1 contains the address information of the media containing the copyright information file 130. Xing =, download information π 2 package 2 0 generate and store the media protection file 丨 "If the server Cry 2 (1 Tai Ting Xi # I·立邮士) 〇 and version of the nuclear message file 1 3 0 in the servo is 20 itself, in the memory, the media "service information file download information 112 contains servo soil Version

^ ^ It ^ ti 1120 ^ ^ # m , &quot;, J It should be noted that it is not intended to limit the second two: It can also be coupled to other servers, for example, called / two to '20 as a server ◦ If the server 20 generates and separately stores the service and the brothers and sisters (1) the storage media protection file 1 2 U and 0685-A40147TWF (nl); IAC030174; Joseph.ptd page 9 1252663

The version of the message file 1 3 0 in the first day of the day ^ ^, a T w in the memory of the second server, then the media protection file under the Gong ^, η 1 0, 戟 戟 成 into 111 and Copyright message file download information I 12 includes media protection broadcast] ', aL wood 12 0 and version of the message file I 3 0 path into the 'more separate contains the server - the second server address . Therefore, the second Shao Information 113 records a brief introduction about the media. The user of the mobile communication can read the introduction information 1 1 3 to decide whether to download the media protection file 120.疋占卩戟媒 Figure 4 shows a schematic diagram of the media protection file of the present invention. The media protection file 12〇 contains a length block 121 of the type, a type field 122, an encrypted data length block 123, and an encrypted data 124. Regardless of the media type, i/〇o is the type of media material that can be encoded and encrypted to produce the same media protection file of type I Μ E. Server 2 媒体 Media data can be encoded using various encoding methods, such as binary encoding and UU encoding (UU-encode). Μ I Μ E type length block 1 2 1 is used to record the length of the media data 丨〇 丨 M丨M E type. Μ I ME type field 1 2 2 is used to record the media data 1 〇 Μ Μ I Μ 。 type. The Encrypted Data Length field 1 2 3 is used to record the length of the encrypted data 1 2 4 . The encrypted data 1 2 4 is generated by the server 20 encrypting the media data 100 with an encryption key 1 3 5 . Encrypted data 1 2 4 Record encrypted media data 1 0 0. However, the media protection file 1 2 0 can also contain other information. _ Figure 5 shows a schematic diagram of the copyright message file of the present invention. The copyright message file 130 contains a decryption key 131 and media copyright 132. The decryption key 1 3 1 is used to decrypt the encrypted data 1 2 4 . Media copyright 1 3 2 may contain information on the lifetime of the media material 1000. However, the copyright message file 1 3 0 is also available.

0685-A40147TWF(nl); IAC030174; Joseph.ptd Page 10 1252663 V. Description of invention (7) to include other more information, such as the Code of Practice for the Use of Media Materials. After the media protection file 120 and the copyright message file 1 3 are generated, the server 20 may store the media protection file 12 and the copyright message file 13 in the memory of the server 20 or separately. Different servers. Next, the server 20 transmits the above description file 1 1 行动 to the mobile communication terminal 10 (step S 8 ). The mobile communication terminal 1 receives the description file 1 1 from the server 20 (step S1 0). The file 1 can be represented as a page, for example, an Extensible Markup Language (XML), A page for Wireless Markup Language (WML). The mobile communication terminal 1 can display the description file 11 0 page using the browser .n. The user of the mobile communication terminal 丨0 can view the page describing the file 1 0 1 and decide whether to download the media protection file 丨 2 版权 or the copyright message file 130. If it is decided to protect the media according to the above description, S 1 2 ). Servo transmission media protection action communication step S 1 8), and if you decide to send a copyright download according to the above description, you need to download the media protection file 1 2 0, the mobile communication terminal 1 broadcast media protection file download information 1 1 1, Sending the request "to download the above media protection file 1 2 〇 (step receiving the protection media download request (step S 1 4), then s1 1 0 to the mobile communication terminal 步骤 (step s 丨 6). 1 接收 Receive media protection file from server 20 1 2 〇 (step (media protection file 1 20 stored in memory 4. download copyright information file 1 30. mobile communication terminal) 〇 2 case 11 版权 copyright information file Download information 1 1 2, send ^月求' to download the above copyright message file 1 3 〇 (steps

1252663 V. Description of invention (8) S20). After the server 20 receives the copyright download request (step S2 2 ), the copyright message file 1 3 0 to the mobile communication terminal 1 〇 (step S2 4 ) &amp; the mobile communication terminal 1 运 from the server The second case 1 3 0 is received (step s 2 6 ) and stored in the memory 4. The rights communication terminal 1 uses the above copyright message file 1 3 〇 to protect the file 120 for decryption (step s 28), and decodes to produce 2' times for the media 1〇〇. More specifically, the mobile communication terminal 10 decrypts the encrypted material 1 24 using the above-described solution: 131. Mobile communication terminal 1 1 〇 Use the browser 1 1 to open, display or play. The media information period information is used to restrict the use of the media protection file/a communication terminal 10 to protect the media protection file according to the copyright information file 丨3 限制3: 〇^ The solution is recorded in the media information. Action, when the media 10 plays media information 1 time, the tribute 100 must expire first. In this case, the copyright information is not secondary/wide, it only needs to be used when decrypting the media protection file, 2, and is controlled by the mobile communication terminal 1 according to the established deadline information. 1. The use of 〇. However, the copyright information file 13 of the present invention protects the media data 丨0 0. π with +丨 For example, the mobile communication terminal is limited to the media tribute 100 that cannot be stored separately. Whenever the mobile communication terminal 10 wants to turn on the media, it is necessary to use the copyright message file 130 to generate the media material 100 for the media protection file 120. Moreover, the mobile communication terminal cannot issue the copyright Zishan 1252663 V. The invention description (9) * is sent out. Thereby, it is possible to prevent the media material 100 from being arbitrarily copied. The media copyright 1 3 2 may also include a limit on the number of uses, and the number of uses of the media data 100 is controlled within a predetermined number of times through the use limit. The media data protection method of the present invention can be combined with a charging mechanism. For example, a charging gateway is set in the wireless application protocol gateway 15 or server 20. Thereby, the download requester of the media material 100 can be charged. Therefore, the media data protection method and system of the present invention of the present invention can protect media data and prevent the media material from being arbitrarily copied after being downloaded by the mobile communication terminal. While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and various modifications and changes may be made without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

0685-A40147TWF(nl); IAC030174; Joseph.ptd Page 13 1252663 Schematic description of the figure β Fig. 1 is a view showing the structure of the media data protection system of the present invention. Figure 2 is a flow chart showing the method of media data protection of the present invention. Figure 3 shows a schematic diagram of the description of the present invention. Figure 4 shows a schematic diagram of the media protection file of the present invention. Figure 5 is a diagram showing the copyright message file of the present invention. [Symbol description] 4~memory; 1 0~ mobile communication terminal; φ 1 1~browser; 1 5~ wireless application communication protocol gateway; 2 0~server; 2 1~media database; 1 0 0 ~ Media information; 1 1 0 ~ description file; 111 ~ media protection file download information; 1 1 2 ~ copyright message file download information; 1 1 3 ~ introduction information; 1 2 0 ~ media protection file; Lu 1 2 1 ~ Μ I Μ Ε type length field; 1 2 2~Μ I Μ Ε type field; 1 2 3~ encrypted data length field; 1 2 4~ encrypted data;

0685-A40147TWF(nl); IAC030174; Joseph.ptd Page 14 1252663

0685-A40147TWF(nl); IAC030174; Joseph.ptd第15页

Claims (1)

1252663 VI. Application for Patent Scope - 1. A media data protection method is implemented in a mobile communication terminal and a server, wherein the mobile communication terminal performs wireless communication with the server, and the following steps are included: a media download request to the server for requesting to download a media data; receiving, at the server, the media download request; at the server, generating a description file and a media protection of the media data according to the media download request The file and the copyright information file, wherein the description file includes the media protection file and the download address of the copyright information file, and the media protection file includes the encrypted media information, wherein the copyright file includes a decryption key for decrypting the media protection file; transmitting the description file to the mobile communication terminal at the server; and receiving the description file from the server at the mobile communication terminal. 2. The method for protecting media data according to item 1 of the patent application scope further includes the following steps: transmitting, at the mobile communication terminal, a protection media download request according to the download address of the media security file in the description file. , for downloading the above media protection file; and receiving the above media protection file in the mobile communication terminal. 3. For the media data protection method described in item 2 of the patent application, the following steps are included: 0685-A40147TWF(nl); IAC030174; Joseph.ptd Page 16 1252663 VI. Patent application scope. In the above mobile communication terminal, according to the download address of the above copyright information file in the above description file, a copyright download request is sent, To download the above copyright information file; and receive the above copyright information file at the mobile communication terminal. 4. The method for protecting media data according to item 3 of the patent application further includes the following steps: In the mobile communication terminal, the media protection file is decrypted by the copyright information file to generate the media data. 5. The method for protecting media data according to item 1 of the patent application, wherein the copyright information file includes a period of use of the media material. φ 6. A media data protection method, executed on a server, comprising the steps of: receiving a media download request from a mobile communication terminal for requesting a media data; and generating a media data according to the media download request a description file, a media protection file, and a copyright message file, wherein the description file includes the media protection file and the download address of the copyright information file, and the media protection file includes the encrypted media file, and the copyright information file includes a decryption key for decrypting the media protection file; and calling the description file to the mobile communication terminal. 7. For the media data protection method described in claim 6 of the patent scope, the following steps are further included: receiving the above media protection file from the mobile communication terminal 068 &gt; A40147TWF (nl); IAC030174; Joseph.ptd page 17 1252663 VI. Application for a protected media download request; and sending the above media protection file to the mobile communication terminal. 8. The method for protecting media data according to claim 7 of the patent application further includes the following steps: receiving, from the mobile communication terminal, a copyright download request for downloading the copyright information file; and transmitting the copyright information file to the above Mobile communication terminal. A media data protection method, implemented in a mobile communication terminal, comprising the steps of: sending a media download request to a server for requesting to download a media data; and receiving a description file from the server, wherein The above description file includes a media protection file and a download address of a copyright message file, the media protection file includes the encrypted media material, and the copyright message file includes a decryption key for decrypting the media protection file; Decoding a download address of the media protection file in the file, sending a protection media download request for downloading the media protection file; receiving the media protection file; sending a copyright according to the download address of the copyright information file in the file described above a download request to download the copyright information file; and 4 to receive the copyright information file. 1 0. The method for protecting media data according to claim 9 of the patent application scope, further comprising the steps of: decrypting the media protection file by using the copyright information file; 0685-A40147TWF(nl); IAC030174; Joseph.ptd Page 18 1252663 VI. Scope of Application The above media information. 11. The method of protecting a media material according to claim 9, wherein the copyright information file includes a lifespan of the media material. 1 2. A media data protection system, comprising: a mobile communication terminal; and a server for wirelessly communicating with the mobile communication terminal, wherein the server receives a media download request from the mobile communication terminal, and according to The media download request generates a description file, a media protection file, and a copyright message file of the media data, wherein the description file includes the media protection file and a download address of the copyright information file, and the media protection file includes encryption After the media information, the copyright information file includes a decryption key for decrypting the media protection file; and the server transmits the description file to the mobile communication terminal. 1. The media data protection system according to claim 12, wherein the server receives a protection media download request for downloading the media protection file from the mobile communication terminal, and sends the media protection file. To the above mobile communication terminal. 1 . The media data protection system according to claim 13 , wherein the server receives a copyright download request for downloading the copyright information file from the mobile communication terminal, and sends the copyright information. The case to the above mobile communication terminal. 1 5. The media data protection system described in claim 14 of the patent application, wherein the mobile communication terminal utilizes the copyright information file, 0685-A40147TWF(nl); IAC030174; Joseph.ptd Page 19 1252663 0685-A40147TWF(nl); IAC030174; Joseph.ptd Page 20