Digital broadcasting is a novel paradigm for the next generation broadcasting. Its goal is to provide not only better quality of pictures but also a variety of services that is impossible in traditional airwaves broad...Digital broadcasting is a novel paradigm for the next generation broadcasting. Its goal is to provide not only better quality of pictures but also a variety of services that is impossible in traditional airwaves broadcasting. One of the important factors for this new broadcasting environment is the interoperability among broadcasting applications since the environment is distributed. Therefore the broadcasting metadata becomes increasingly important and one of the metadata standards for a digital broadcasting is TV-Anytime metadata. TV-Anytime metadata is defined using XML schema, so its instances are XML data. In order to fulfill interoperability, a standard query language is also required and XQuery is a natural choice. There are some researches for dealing with broadcasting metadata. In our previous study, we have proposed the method for efficiently managing the broadcasting metadata in a service provider. However, the environment of a Set-Top Box for digital broadcasting is limited such as low-cost and low-setting. Therefore there are some considerations to apply general approaches for managing the metadata into the Set-Top Box. This paper proposes a method for efficiently managing the broadcasting metadata based on the Set-Top Box and a prototype of metadata management system for evaluating our method. Our system consists of a storage engine to store the metadata and an XQuery engine to search the stored metadata and uses special index for storing and searching. Our two engines are designed independently with hardware platform therefore these engines can be used in any low-cost applications to manage broadcasting metadata.展开更多
在有线数字电视广播(Digital video broadcast,DVB-C)中针对数字视频监管和版权保护问题,提出一种基于数字水印和TI DaVinci技术的信息安全监测系统。通过视频服务器将数字水印嵌入到电视节目视频中,嵌入水印的视频以传输流(Transport s...在有线数字电视广播(Digital video broadcast,DVB-C)中针对数字视频监管和版权保护问题,提出一种基于数字水印和TI DaVinci技术的信息安全监测系统。通过视频服务器将数字水印嵌入到电视节目视频中,嵌入水印的视频以传输流(Transport stream,TS)的形式从视频服务器经同轴线传送到数字机顶盒,然后机顶盒经条件接收和解码后播放电视节目并从中提取数字水印。实验结果表明安全检测系统嵌入水印时不影响原始视频的视觉效果,并且能够准确有效地提取数字水印。数字水印对编解码、视频丢帧和视频拷贝等攻击具有较好的鲁棒性,达到视频跟踪和版权认证的要求。展开更多
基金National Science CouncilTai wan+4 种基金under Grant NSC96-2422-H-158-001the Joint Academia-Industry Development Project of Commerce Industrial Services PortalMinistry of Economic AffairsTai wanunder Grant S09800025136494
文摘Digital broadcasting is a novel paradigm for the next generation broadcasting. Its goal is to provide not only better quality of pictures but also a variety of services that is impossible in traditional airwaves broadcasting. One of the important factors for this new broadcasting environment is the interoperability among broadcasting applications since the environment is distributed. Therefore the broadcasting metadata becomes increasingly important and one of the metadata standards for a digital broadcasting is TV-Anytime metadata. TV-Anytime metadata is defined using XML schema, so its instances are XML data. In order to fulfill interoperability, a standard query language is also required and XQuery is a natural choice. There are some researches for dealing with broadcasting metadata. In our previous study, we have proposed the method for efficiently managing the broadcasting metadata in a service provider. However, the environment of a Set-Top Box for digital broadcasting is limited such as low-cost and low-setting. Therefore there are some considerations to apply general approaches for managing the metadata into the Set-Top Box. This paper proposes a method for efficiently managing the broadcasting metadata based on the Set-Top Box and a prototype of metadata management system for evaluating our method. Our system consists of a storage engine to store the metadata and an XQuery engine to search the stored metadata and uses special index for storing and searching. Our two engines are designed independently with hardware platform therefore these engines can be used in any low-cost applications to manage broadcasting metadata.
文摘在有线数字电视广播(Digital video broadcast,DVB-C)中针对数字视频监管和版权保护问题,提出一种基于数字水印和TI DaVinci技术的信息安全监测系统。通过视频服务器将数字水印嵌入到电视节目视频中,嵌入水印的视频以传输流(Transport stream,TS)的形式从视频服务器经同轴线传送到数字机顶盒,然后机顶盒经条件接收和解码后播放电视节目并从中提取数字水印。实验结果表明安全检测系统嵌入水印时不影响原始视频的视觉效果,并且能够准确有效地提取数字水印。数字水印对编解码、视频丢帧和视频拷贝等攻击具有较好的鲁棒性,达到视频跟踪和版权认证的要求。
