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Method and system for merging copyright control information in digital copyright managing system

A technology for digital copyright management and information control, applied in electronic digital data processing, instruments, program/content distribution protection, etc. Promoting a virtuous circle, avoiding rights conflicts, and promoting the effect of giving

Inactive Publication Date: 2008-09-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention provides a method and system for merging copyright control information in a digital copyright management system to solve the problem of inability to identify whether different copyright control information points to the same original media content in the prior art, and the combination of rights may lead to infringement of media content The problem of copyright; further, to solve the problem that the interests of copyright publishers and users cannot be well taken into account when the rights are merged in the prior art

Method used

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  • Method and system for merging copyright control information in digital copyright managing system
  • Method and system for merging copyright control information in digital copyright managing system
  • Method and system for merging copyright control information in digital copyright managing system

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Embodiment Construction

[0076] In this embodiment, the copyright control information is a copyright object (RO), and the protected file is a digital rights management content format (DCF) file for illustration, but the present invention is not limited thereto.

[0077] The relationship between original media content, digital rights management content format (DCF) file and copyright object (RO) under the existing technology model is as follows: figure 1 shown. Usually, in order to ensure the security of the media content it distributes, the content publisher (CI) will not only use one encryption key (CEK) to encrypt the original media content and form a DCF file for thousands of users to download, but use Multiple CEKs encrypt the same original media content to form multiple versions of DCF files for users to download. CI assigns a unique content ID (ContentID) to each DCF file and records it in the DCF file header. In the RO provided by the RI, the ContentID of the corresponding DCF file is stored,...

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Abstract

This invention discloses a method for merging copyright control information in a digital copyright management system, which gets all control information containing a same media content identification according to the media content identification capable of identifying effective corresponding original media content in said copyright control information, takes a piece of control information in the information as the primary standard information and merges other control information to said primary standard copyright control information to control users to use said media contents. This invention also discloses a digital copyright management system and a terminal device.

Description

technical field [0001] The invention relates to digital rights management technology of communication technology, in particular to a method and system for merging copyright control information in a digital rights management system. Background technique [0002] Digital Rights Management (DRM) is a technology that can effectively prevent users from illegally copying and transmitting digital media content through networks and computers, thereby protecting the interests of media content developers. It is one of the prerequisites for selling media content through the Internet. The basic principle is: the issuer of the media content (ContentIssuer, CI) uploads the encrypted digital media content to the network server for users to download, and gives the decryption key and usage rights of the media content to the authority issuer (Right Issuer). , RI) management, the latter writes information such as keys and usage rights into the rights object (Right Object, RO); if the user want...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/00G06F21/10
Inventor 张仁宙李益民党沛周皓隽
Owner HUAWEI TECH CO LTD
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