通信与与电子信息工程专业英语_课文翻译_聂敏著第9单元TEXT.ppt

Unit 9IPTV Text IPTV Overview Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Unit 9 原文： IPTV is an IP network application that supports several high quality video and audio standards (for example, MPEG and H.261) for live video, scheduled video, and video on demand. 译文:IPTV 是IP网络的应用，它为视频直播、预约视频、视频点播提供多种高质量的视频和音频标准（例如MGEG 和H.261）支持。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Unit 9 原文： Generally speaking, IPTV refers to the distribution of television and video signals in parallel with the Internet connection supplied by a broadband operator using the same IP (and mostly the same VoIP ) packet network infrastructure. 译文:一般来说，IPTV是指互联网连接的并行电视和视频信号的分配是由宽带运营商提供的。他们使用相同的IP（大多是相同的VoIP）数据包和网络基础设施 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Unit 9 原文：The users can receive and view the contents on a home TV, a PC, or even with a hand-held device on the move. The devices are loaded with an IPTV client. 译文:用户可以从家里的电视、PC机甚至是移动的终端上接收和观看电子菜单。这设备需要从IPTV的机顶盒中下载（电子菜单）。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Unit 9 原文：Content servers house the title collections and the feeds from content producers. The TV contents are usually encoded in a standard format. 译文:电子菜单的服务是从节目的制造商那取材并收集节目的标题，电视的节目表则常常是以一种特定的格式来编码的。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Unit 9 原文：The contents can be broadcast or on demand distribution, all controlled by the schedule server. 译文:电子菜单可以是广播的，也可以是按照一定的服务表格控制的按需发送。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Unit 9 原文：The IPTV server handles user requests and the flows are chopped into a stream of IP packets. 译文:IP