| This paper is mainly concered with the design of the embedded graphic user interface to be used in the embedded system of PVR and its detailed implementation.Graphic user interface is widely used in software system because of its excellent human-computer interaction capability. In the embedded system of PVR, it will directly take effect on the portability of the navigator application software to build a graphic user interface with the features of low resource, high performance,easy portable and good compatibility. Furthermore, it is very important for the diversification and cost-effective of the future product. After the requirement analysis of GUI system to be used in the embedded system of PVR and the evaluating on the performance and characteristic of several popular GUI system used in the embedded system, Porting Microwindows was adopted as the solution to GUI sysem to be used in the embedded system.After introduction of the system of PVR in this article, the design and implementation of the the embedded graphic user interface, which based on system of PVR is described. This article is divided into four parts:In the first part, the background of system of PVR is introduced.In the second part, the demand analyse of GUI that are used in the system of PVR is described.In the third part, the system of Microwindows is fully detailed.In the fourth part,the replant of Microwindows is fully detailed.By means of the deeply analyzing and studying to the architecture of Microwindows (such as device driver, graphicengine, application programming interface) and the internal implementation mechanism, code porting and test program's verifying, it was finally proved that Microwindows meets the requirement of the embedded system of PVR, as well as, it facilitate the potential system function extension in the future. |
