【摘要】 本文研究了数字电视广播中的版权保护方案,提出从视频接口和节目内容传输两个环节中进行版权的保护。针对视频接口提出一种安全认证加密机制。在接收或录制设备端,提供授权的解密方法,实现加密数据流的播放和录制。针对内容传输提出应用基于频域的主动水印算法进行广播监视,讨论了数字电视网络系统中基于水印的访问控制模型,以及数字水印的嵌入与提取原理。更多还原

【Abstract】 A copyright protection scheme of digital TV is proposed in this paper. The main idea of this scheme is to realize the copyright protection through digital video interface and digital content transmission. A security authentication encryption technique that encrypt the content data to the video interface is proposed, which can protect the validity of the digital content. In addition, at the end of receive or record equipments.A broadcast monitoring based on active watermarking in frequency domain. Moreover, the access control model using watermarking in DTV network is discussed. Accordingly, the watermarking embedding and extraction technique is proposed.更多还原