文章基本信息

标题：放送コンテンツの著作権保護における電子透かしの利用方法
本地全文：下载
作者：山田隆亮 ; 吉浦裕 ; 越前功等
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：2003
卷号：57
期号：9
页码：1155-1167
DOI：10.3169/itej.57.1155
出版社：The Institute of Image Information and Television Engineers
摘要：Copyright protection of broadcast content has become an issue of great concern because digital broadcasting is increasingly used to deliver high quality visual and audio content. We analyze the existing copyright protection technologies and clarify why they cannot prevent illegal copies from being created through the analogue output of broadcast receivers. Illegally copied content can thus be re-digitized and distributed through the Internet and portable media. Digital watermarking that survives analogue processes effectively complements existing technologies. Four methods of using watermarking to detect illegal copies, copiers, and distributors are described and compared with respect to their implementation cost, detection ability, and ease of deployment. The technical requirements of the watermarking used in these methods are also clarified with respect to survivability against analogue processes, maintenance of image quality, and quantity of embedded information.
关键词：放送;放送コンテンツ;不正コピー;電子透かし;著作権保護