• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Computational Science and Its Applications(ICCSA 2004) pt.1; 20040514-20040517; Assisi; IT >A Transcode and Prefetch Technique of Multimedia Presentations for Mobile Terminals
【24h】

A Transcode and Prefetch Technique of Multimedia Presentations for Mobile Terminals

机译：移动终端多媒体演示的转码和预取技术

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

As mobile communication technologies are developing rapidly, this paper proposes a technique of playing multimedia presentation on mobile terminals in a more stable environment. To play multimedia presentation on mobile terminals in a stable way, there are problems. Since mobile terminals use low bandwidth, it is impossible to play multimedia presentation which has large amount of data. Even after prefetching, limited memory of mobile terminals prohibit stable play of the presentation. On this basis, the paper proposes a prefetching technique combined with transcoding method to solve these problems. For this aim, a multimedia presentation should be transcoded to be playable in mobile terminals. It is not that every stream existing in the presentation is transcoded, but that only the selected according to the stream selection policy, i.e. scheduling, are transcoded. This is to save transcoding time. By this way, the early delay time, which includes transcoding time in mobile terminals, can be minimized. Moreover, after undergoing transcode, the presentation is to be prefetched in compliance with the memory size of the mobile terminal. This process makes it possible for the presentation to be played in a more stable way. Through the experiments of 90 presentations, it becomes possible to select superior selection policy after applying prefetch and transcode. The presentation, which adopts more superior policy, shows more stable play as well as reduced early delay time.
机译：随着移动通信技术的飞速发展，本文提出了一种在更稳定的环境中在移动终端上播放多媒体演示的技术。为了以稳定的方式在移动终端上播放多媒体演示，存在一些问题。由于移动终端使用低带宽，因此不可能播放具有大量数据的多媒体演示。即使在预取之后，移动终端的有限内存也会阻止演示文稿的稳定播放。在此基础上，提出了一种结合转码方法的预取技术来解决这些问题。为了这个目的，应该对多媒体演示进行转码以便在移动终端中可播放。并不是呈现中存在的每个流都被转码，而是仅根据流选择策略即调度选择的流被转码。这是为了节省转码时间。通过这种方式，可以最小化包括移动终端中的代码转换时间在内的早期延迟时间。此外，在经历转码之后，将根据移动终端的存储器大小来预取演示。此过程可以使演示文稿以更稳定的方式播放。通过90个演示文稿的实验，可以在应用预取和转码后选择高级选择策略。演示文稿采用了更优越的策略，显示了更稳定的播放效果并减少了早期延迟时间。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号