CN101751527A - Copyright protection method of multimedia file in reproduction and spreading process - Google Patents
Copyright protection method of multimedia file in reproduction and spreading process Download PDFInfo
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- CN101751527A CN101751527A CN200910186724A CN200910186724A CN101751527A CN 101751527 A CN101751527 A CN 101751527A CN 200910186724 A CN200910186724 A CN 200910186724A CN 200910186724 A CN200910186724 A CN 200910186724A CN 101751527 A CN101751527 A CN 101751527A
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Abstract
The invention relates to a copyright protection method of a multimedia file in the reproduction and spreading process, which comprises the steps of sampling one part of data in the protected multimedia file through the data sampling technology, saving in a network server, then erasing the sampled data in the original multimedia file and saving the incomplete multimedia file in a storage medium for producing a copy of the multimedia file, when a terminal user reads the multimedia file in the medium, the terminal user needs to download the missing sampled data from the network server after passing through the genuine certification and realize the dynamic splicing with the multimedia file in the storage medium, so as to normally use the multimedia file. Therefore, the copyright protection method can not only prevent the pirated copy reproduction, but also effectively reduce the downloading burden of a traditional network-on-demand system.
Description
Technical field
The present invention relates to the copy-right protection method of a kind of multimedia file in reproduction and spreading process.
Background technology
At present, when preserving multimedia file and distribution propagation, be subjected to piracy easily and duplicate with storage medium.People design a lot of anti-piracy techniques, and these technology are generally being worked hard aspect media protection and the data encryption, and the multimedia file of being protected intactly is kept on the medium.Like this, in case safeguard measure is cracked, then content of multimedia can be duplicated easily.Also there are some technology to pass through authorization identifying, real-time VOD is downloaded multimedia file on network then, take precautions against the disabled user with this and visit unwarranted multi-medium data, but this VOD system is very high to network requirement, need expend very big network service bandwidth.
Summary of the invention
The objective of the invention is at the Copyright Protection of multimedia file by the storage medium communication process; propose a kind ofly can effectively protect multimedia file to avoid bootlegging, and alleviate the copy-right protection method of multimedia file in reproduction and spreading process of Network Transmission bandwidth pressure.
The copy-right protection method of multimedia file of the present invention in reproduction and spreading process; by data sampling method the data content of multimedia file is cut apart; the data content of multimedia file is divided into two parts; a part is kept on the server, and another part is kept at and is used in the storage medium propagating.Specifically, be exactly when making multimedia storage medium, multimedia file is sampled by certain strategy, the multimedia file of erasing sampled data is saved in the storage medium, then sampled data is saved on the webserver; The client reads multimedia file from medium be the incomplete file of having erased sampled data, can't normally use; The client needs earlier the copyright authentication by the webserver, then the required sampled data of dynamic download and be spliced into complete file and use with imperfect multimedia file on the medium from the server.
The copy-right protection method of multimedia file of the present invention in reproduction and spreading process can effectively be protected the multimedia file copyright, and alleviates the download burden of traditional multimedia-on-demand website.
Description of drawings
Fig. 1 carries out the synoptic diagram of multimedia file data sampling process for using the inventive method.
Embodiment
The copy-right protection method of a kind of multimedia file in reproduction and spreading process, comprise data in the multimedia file reproduction process cut apart with playing process in cut apart the dynamic merging of back data.
Data in the multimedia file reproduction process are cut apart: a multimedia file, no matter be audio frequency, video, perhaps interactive multimedia such as flash animation, all be to preserve with the form of binary sequence, multimedia file is carried out data sampling, the multimedia file of erasing sampled data is copied to making multimedia copy in the storage medium, then sampled data is saved on the webserver.The core of the method for sampling is exactly with certain strategy the data content of former multimedia file to be divided into two parts, and a part is saved on the storage medium distributes, and a part is saved on the server by just allowing download behind the copyright authentication.The method that the binary data sequence of multimedia file is sampled has a variety of, can be simply every just sample some data of a determining deviation, can adopt specific cryptographic algorithm to generate the address sequence of sampling, can combine the key frame of only sampling with the compression algorithm of audio frequency and video, also voice data and video data can be separated a sampled audio data.Here introduce the simplest method of sampling, sample every a determining deviation.
During the Computer Processing binary stream, be that a byte is that unit handles generally with 8 bits.Multimedia file is exactly a sequence forming of byte one by one.The ordinal position of each byte data in this sequence is exactly its address.From the file beginning is the 0th byte, every the data of k byte of n byte sampling.The data of the k byte of every n byte in the former multimedia file are covered with 0, the file of Xing Chenging is exactly that the multimedia file copy that is kept on the propagation medium (is erased the process of sampled data, also can be realized by leaving out every a k of a n byte byte like this.Here this part data being covered with 0 is a kind of method of dataout).Such file has been owing to erased a part of data, thereby is incomplete, can't normally use.The data of the k byte of every n byte in the former multimedia file are released preserve into a file separately, this file is exactly the sampled data file that is kept on the server.
With reference to figure 1, former multimedia file is sampled two files, n=100 wherein, k=2.Data among Fig. 1 are represented with 16 systems.
Cut apart the dynamic merging of back data in the playing process: the terminal user can't directly use after taking incomplete multimedia copy (such as video disc).Need to play with specific playout software.The workflow of playout software is as follows.
1, playout software sends on the server by the copyright information of certain communication mode (such as network, note etc.) with the user, by the copyright authentication of server.
2, playout software is downloaded corresponding sampled data file from server.
3, playout software is merged into complete multimedia file with the multimedia on sampled data and medium copy and plays.
User's copyright information can be one section sequence number with multimedia copy media distribution, also can be the log-on message that the user fills in when buying.These copyright informations are kept on the server, verify when playing.Playout software only can be downloaded corresponding sampled data file after by the copyright authentication of multimedia file.
Playout software can be used as computer applied algorithm and operates on the subscriber computer, also can be the one section program that is solidificated on the specific broadcast machine.
Claims (4)
1. the copy-right protection method of a multimedia file in reproduction and spreading process; it is characterized in that: it comprise data in the file copy process cut apart with playing process in the dynamic merging of partition data; by data sampling method the data content of multimedia file is cut apart; the data content of multimedia file is divided into two parts; a part is kept on the server, and another part is kept at and is used in the storage medium propagating.
2. the copy-right protection method of multimedia file according to claim 1 in reproduction and spreading process; it is characterized in that: the terminal user can't play-over the incomplete multimedia file in the storage medium, must from the sampled data of downloaded disappearance and with storage medium on incomplete multimedia file be merged into complete file could normal play.
3. the copy-right protection method of multimedia file according to claim 1 in reproduction and spreading process is characterized in that: only by behind the copyright authentication, and could be from the sampled data of downloaded disappearance.
4. the copy-right protection method of multimedia file according to claim 1 in reproduction and spreading process, it is characterized in that: the data content of former multimedia file is divided into two parts with certain strategy, a part is saved on the storage medium distributes, and a part is saved on the server by just allowing download behind the copyright authentication; The method that the binary data sequence of multimedia file is sampled has a variety of, comprise simply every just sample some data of a determining deviation, comprise the address sequence that adopts specific cryptographic algorithm to generate sampling, comprise with the compression algorithm of audio frequency and video combining the key frame of only sampling, comprise voice data and video data are separated a sampled audio data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910186724A CN101751527A (en) | 2009-12-16 | 2009-12-16 | Copyright protection method of multimedia file in reproduction and spreading process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910186724A CN101751527A (en) | 2009-12-16 | 2009-12-16 | Copyright protection method of multimedia file in reproduction and spreading process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101751527A true CN101751527A (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910186724A Pending CN101751527A (en) | 2009-12-16 | 2009-12-16 | Copyright protection method of multimedia file in reproduction and spreading process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664928A (en) * | 2012-04-01 | 2012-09-12 | 南京邮电大学 | Data secure access method used for cloud storage and user terminal system |
| CN103428172A (en) * | 2012-05-18 | 2013-12-04 | 袁斌 | Method for safely storing information and method for safely reading information |
| CN104255008A (en) * | 2012-03-16 | 2014-12-31 | 阿尔卡特朗讯公司 | Enabling delivery of protected content using unprotected delivery services |
| CN107409130A (en) * | 2015-03-02 | 2017-11-28 | 高通股份有限公司 | Instruction for segment section |
| US10749930B2 (en) | 2015-03-02 | 2020-08-18 | Qualcomm Incorporated | Indication for partial segment |
| CN113572614A (en) * | 2020-04-28 | 2021-10-29 | 万维数码智能有限公司 | Security method and system for data transmission |
-
2009
- 2009-12-16 CN CN200910186724A patent/CN101751527A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104255008A (en) * | 2012-03-16 | 2014-12-31 | 阿尔卡特朗讯公司 | Enabling delivery of protected content using unprotected delivery services |
| US9948695B2 (en) | 2012-03-16 | 2018-04-17 | Alcatel Lucent | Enabling delivery of protected content using unprotected delivery services |
| CN102664928A (en) * | 2012-04-01 | 2012-09-12 | 南京邮电大学 | Data secure access method used for cloud storage and user terminal system |
| CN103428172A (en) * | 2012-05-18 | 2013-12-04 | 袁斌 | Method for safely storing information and method for safely reading information |
| CN107409130A (en) * | 2015-03-02 | 2017-11-28 | 高通股份有限公司 | Instruction for segment section |
| US10659507B2 (en) | 2015-03-02 | 2020-05-19 | Qualcomm Incorporated | Indication for partial segment |
| US10749930B2 (en) | 2015-03-02 | 2020-08-18 | Qualcomm Incorporated | Indication for partial segment |
| CN107409130B (en) * | 2015-03-02 | 2021-06-08 | 高通股份有限公司 | Indication of partial segments |
| CN113572614A (en) * | 2020-04-28 | 2021-10-29 | 万维数码智能有限公司 | Security method and system for data transmission |
| WO2021218885A1 (en) * | 2020-04-28 | 2021-11-04 | 万维数码智能有限公司 | Security and confidentiality protection method and system for data transmission |
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Open date: 20100623 |