摘要
为了在无线语音系统中实现对多媒体终端的更为丰富的、方便的控制功能,设计了基于USB-HID(universalserial BUS-human interface device)的新型光学导航模块OFN(optical finger navigation)的控制单元,该控制单元主要由OFN模块,MCU(micro control unit),2.4G收发模块及其相应的软件实现。在深入分析了USB-HID类协议中USB鼠标与PC机数据交互的类型及其方式的基础上,说明了OFN模块与USB鼠标之间的数据衔接方法。并通过采用时分复用技术和设置软件判断标志位,达到了将该控制功能嵌入到语音系统中的目的。
To obtain a richer and more convenient control functions for multimedia terminals in the wireless voice system, a control unit of optical finger navigation （OFN） based on USB-HID is designed. The control unit is implemented by an OFN module, micro control unit （MCU） and the correspondent software. Under the in-depth analysis of the type and manner of the USB-HID class protocol of USB mouse data exchange with PC, the method of data linkage between OFN module and USB mouse is described. Moreover, by adopting the Time Division Multiplexing and the soft judgment flag, the purpose of the control functions embedded into the voice system is achieved.
出处
《计算机工程与设计》
CSCD
北大核心
2012年第11期4149-4153,共5页
Computer Engineering and Design
