说明：  介绍了一种基于嵌入式Linux 的智能手机系统软件平台的设计与实现，系统软件从层次上分为四层， 最底层是操作系统层，实现对嵌入式Linux 的移植、裁剪；第二层是系统服务层，所有跟手机相关的业务都由此层 来处理，以及数据库服务；第三层是中间层，嵌入式GUI 实现人机交互接口，J2ME 中间件支持java 程序的下载、 运行；最上层是智能手机应用层，实现手机的基本功能及其他应用。
(Introduces the design and implementation of the smart phone system software based on the embedded Linux. The system software is divided into four layers with the operating system as the bottom layer, which realizes the transplantations of embedded Linux. The second layer is the system service which deals with the database service as well as all the business related with cell phones. In the third layer, the middle layer, the embedded GUI realizes the human-computer interface and the J2ME middleware supports the download and running of java programmers. The top layer is the application layer of smart phones where the basic functions and other applications of cell phones are realized.)