文章基本信息

标题：サーバ型放送におけるメタデータによるコンテンツ利用のアクセス制御方式
本地全文：下载
作者：西本友成 ; 馬場秋継 ; 栗岡辰弥等
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：2006
卷号：60
期号：1
页码：58-65
DOI：10.3169/itej.60.58
出版社：The Institute of Image Information and Television Engineers
摘要：Digital Broadcasting using Metadata (DBM) is a term describing new broadcasting services offered by utilizing a receiver with storage capacity. The services include program viewing that does not depend on normal broadcasting hours and highlight viewing that uses program-related information, called metadata. Preventing unauthorized use of stored programs is a critical issue in these services. It is extremely easy to edit programs that the broadcaster requires by using a program usage control mechanism. We propose an advanced Conditional Access System (CAS) for DBM. It achieves a secure environment for content and metadata, by preventing tampering and ensuring that only metadata certificated by the broadcaster can be utilized. We also developed a prototype receiver on a PC and an advanced CAS card on a Java Card to evaluate the system. We confirmed through on the implementation experiment that the CAS could be utilized in broadcasting services..
关键词：デジタル放送;サーバ型放送;アクセス制御;コンテンツ保護;メタデータ