实现了一种硬件集成度高、软件可移植性强的嵌入式可视IP电话终端.硬件方面,提出了i.MX53多媒体处理器为主芯片的单控制芯片方案,因芯片内部集成了视频编解码器,故降低了硬件设计的复杂度,且具有较好的抗干扰性和稳定性.软件方面,提出了底层、中间件和应用层三个构件层的软件架构,中间件为应用层提供了访问底层构件的接口,屏蔽了调用底层硬件驱动的复杂性,故降低了软件设计的难度,且具有可被快速用于同类产品或基于本产品的二次开发的特点.测试结果表明,本终端是可行有效的.
This paper describes an implementation of embedded video IP telephone terminal,which have the features of high integration in hardware and strong portability in software.Hardware,it presents a design scheme using i.MX53 MCU as the main control chip.i.MX53 integrates video codec,so it will reduce the complexity of hardware designing,and have better anti-interference performance and stability.Software,it presents the architecture with the bottom,middleware and application component layers.The middleware provide the interfaces accessing to the bottom component for application layer.This method shields the complexity calling the bottom hardware driver,so reduces the difficulty of software designing.Furthermore,the software can be used rapidly to develop the similar products or secondary developments based on the product.The testing results show that the terminal is feasible and effective.