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  • 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
  • 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
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