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Digital copyright protection method and system

A digital copyright protection and digital media technology, applied in digital transmission systems, transmission systems, electronic digital data processing, etc., can solve the problems of unprotected, pirated, and incompatible hierarchical protection, and improve security and reliability Effect

Inactive Publication Date: 2008-01-16
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In the prior art, the packaged media file is only encrypted with a key on one layer, and this media file is easy to be decrypted, which leads to the possibility of piracy and cannot protect this copyright; The digital copyright protection system cannot adapt to the different security requirements of different media for hierarchical protection, nor can it adapt to the copyright protection requirements in P2P network transmission.

Method used

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  • Digital copyright protection method and system
  • Digital copyright protection method and system

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Embodiment Construction

[0055] Referring to FIG. 1 , it shows a schematic diagram of a commonly used DRM protection method and system at present. Digital media content is first packaged and encrypted to become encrypted media content; after the encrypted media content is generated, it is published on the network through a streaming media server or the Web, and at the same time, the playback license of the encrypted media content is stored on the authorized server. The user requests and obtains the encrypted media content through the streaming media server or the Web server, obtains the URL (authorization server) for obtaining the play license from the encrypted media content file, and requests the play license from the authorization server. After going through the verification process (registration or purchasing a license), the user gets a playback license from the authorization server. After obtaining the playing license, the user can decrypt and play the encrypted digital media content, and can als...

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Abstract

The method includes steps: (1) partitioning, encrypting and creating container file; (2) distributing and issuing files; (3) obtaining license. The system includes a packing encipherer for digital media file, partitioning and slicing encipherer, container file encipherer, authorization server for media playing, down loading authorization server, network server for container files, steam media or file server, seed server, and player. The disclosed method and system realizes multiple protections for media files, media slicing and raises safety and reliability for copyright protection. Features are: matching up P2P transmission requirement in network, adapting to the need of implementing encrypting protection at different layers for different security classes of different media contents transmitted through network.

Description

technical field [0001] The invention belongs to the technical field of digital information network, and in particular relates to a copyright protection method and protection system for digital multimedia. Background technique [0002] Digital copyright protection system refers to one or several technologies that control or limit the use of digital media content on electronic devices. Digital media content that most often uses digital rights protection or management (DRM) technology includes music, movies, visual artwork, and computer data files and software products. [0003] As the name suggests, digital rights management (DRM) systems only apply to digital media. Due to the advancement of its production and processing technology, as well as higher quality, digital media content is more popular than analog media content. With the popularization of personal computers, digital media files can be copied and distributed in unlimited quantities without any loss of quality. An...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/00H04L9/00
Inventor 吴波程钢张维祥
Owner 关明