根据IDC研究数据显示,全球数字机顶盒（SetTop Box,STB）出货量逐年增长,2010年将一举突破一亿台。由于电视广播频道传输标准发展逐渐成熟,应用产品推陈出新,例如：采用Android平台开发的STB。此外,在OIPF、W3C、HbbTV与DTV等国际标准...根据IDC研究数据显示,全球数字机顶盒（SetTop Box,STB）出货量逐年增长,2010年将一举突破一亿台。由于电视广播频道传输标准发展逐渐成熟,应用产品推陈出新,例如：采用Android平台开发的STB。此外,在OIPF、W3C、HbbTV与DTV等国际标准制定组织的努力下,各种标准活动也正蓬勃的进行，期望能有效完成产品互通。一般而言，应用与服务共通的标准被称之为混合式网络广播（Hybrid Internet Broadcast,HIB），下文则将针对当前最热门的混合式TV相关的应用服务议题进行讨论与阐述。展开更多
A new method of prefetching data blocks from the NVCache to the page cache in main memory and cascading prefetching n-blocks from a hard disk to the NVCache together was proposed to reduce the spin-up frequency of a h...A new method of prefetching data blocks from the NVCache to the page cache in main memory and cascading prefetching n-blocks from a hard disk to the NVCache together was proposed to reduce the spin-up frequency of a hybrid hard disk drive and thus enhance I/O performance.The proposed method consists of three steps:1) Analyzing the pattern of read requests in block units;2) Determining the number of blocks prefetched to the NVCache;3) Replacing blocks in the NVCache according to the block replacement policy.The proposed method can reduce the latency time of a hybrid hard disk and optimize the power consumption of an IPTV set-top box.Experimental results show that the proposed method provides better average response time compared to an existing adaptive multistream prefetching(AMP) method by 25.17%.It also reduces by 20.83% the average power consumption over that of the existing external caching in energy saving storage system(EXCES) method.展开更多
文摘根据IDC研究数据显示,全球数字机顶盒（SetTop Box,STB）出货量逐年增长,2010年将一举突破一亿台。由于电视广播频道传输标准发展逐渐成熟,应用产品推陈出新,例如：采用Android平台开发的STB。此外,在OIPF、W3C、HbbTV与DTV等国际标准制定组织的努力下,各种标准活动也正蓬勃的进行，期望能有效完成产品互通。一般而言，应用与服务共通的标准被称之为混合式网络广播（Hybrid Internet Broadcast,HIB），下文则将针对当前最热门的混合式TV相关的应用服务议题进行讨论与阐述。
基金supported in part by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2011-0004114)in part by the Ministry of Knowledge Economy (MKE) and Korea Institute for Advancement in Technology (KIAT) through the Workforce Development Program in Strategic Technology in part by the MKE (The Ministry of Knowledge Economy), Korea, under the CITRC (Convergence Information Technology Research Center) support program (NIPA-2012-C6150-1201-0001) supervised by the NIPA (National IT Industry Promotion Agency)
文摘A new method of prefetching data blocks from the NVCache to the page cache in main memory and cascading prefetching n-blocks from a hard disk to the NVCache together was proposed to reduce the spin-up frequency of a hybrid hard disk drive and thus enhance I/O performance.The proposed method consists of three steps:1) Analyzing the pattern of read requests in block units;2) Determining the number of blocks prefetched to the NVCache;3) Replacing blocks in the NVCache according to the block replacement policy.The proposed method can reduce the latency time of a hybrid hard disk and optimize the power consumption of an IPTV set-top box.Experimental results show that the proposed method provides better average response time compared to an existing adaptive multistream prefetching(AMP) method by 25.17%.It also reduces by 20.83% the average power consumption over that of the existing external caching in energy saving storage system(EXCES) method.
