android4.0系统的网络机顶盒硬件设计.pdfVIP

Android4.0 系统的网络机顶盒硬件设计 了该网络机顶盒的硬件系统总体结构图，根据需求分析采用以Hi3716MV300 为主 处理器、512MB DDR 和2GB flash 的最小系统解决方案。然后详细设计了网络机 顶盒硬件系统的功能模块，针对各个功能模块进行了原理说明，并给出了部分的 电路原理图，之后通过cadence 的PCB Editor 设计出了系统的PCB 图。由于本 机顶盒采用了Android4.0 操作系统，所以在研究了android 系统上实现网络机 顶盒相关业务功能的同时，在原有Android 操作系统架构不变的情况下，设计并 实现系统软件各层所需的扩展功能及相应接口。最后对设计完成的网络机顶盒进 行了电性能测试，给出了测试方法和测试结果，并针对测试中出现的不合格项进 行了分析与整改。最终达到了机顶盒测试标准规范中的各项性能指标。 关键词：Android； STB； 网络机顶盒；智能操作系统 Android4.0 系统的网络机顶盒硬件设计 Network set-top box hardware design of android4.0 system Abstract With the application of Internet’s business demand speedly increasing, construction and expansion of broadband network is quickly booming. The advantage of network video is more and more obvious with the increase of network bandwidth. Network set-top box transmite the audio and video stream and data stream by Internet. As a new media forms, the user can directly request program on TV and broadcast content by it. Network set-top box has high definition, good user experience and rich resources and so on, which will replace the traditional set -top box and become a family of audio-visual center. Open network set-top box will be the development direction of network set-top box, which inosculate interactive and universal of Internet, high defitinition and enjoyment of TV as a whole. Open network set-top box can access the IPTV private network and the public Internet through the home gateway, and use television and audio to provide page information browsing, IPTV player, Internet video and audio, the app store, visual communication, family media sharing, games and other interactive services for the end user, which requires the operating system of network set-top box with intelligent, open, universal and powerful third party software support. But the current main operating system of the network set-top box is embedded LINUX system, in essence, it