数字电视机顶盒人机交互组件的设计与实现  

Design and implementation of digital TV set-top box′s human-computer interaction component

作　　者：王进华[1,2] 曾凌峰[2] 张勤利[2] 

机构地区：[1]华南理工大学计算机科学与工程学院,广东广州510006 [2]罗定职业技术学院电子信息系,广东罗定527200

出　　处：《微型机与应用》2011年第20期96-98,共3页Microcomputer & Its Applications

基　　金：广东省科技攻关项目(20045040056);罗定职业技术学院科研课题(20081230)

摘　　要：对交互组件的RC5码信号规范进行分析,定义了遥控器的脉冲、状态变量以及解码应用的数据类型,完成交互组件的初始化、中断处理、键值信号处理的流程设计与软件实现。最后基于嵌入式操作系统在机顶盒硬件上进行人机交互运行调试。结果表明,该交互组件不仅能满足数字电视和交互增值业务的需求,而且相比其他同类产品在响应速度上得到提高,人机交互的时延有所减小。The paper analyzes the RC5 code key signal specification of interactive module, defines the the data types of remote control pulse, the state enumeration, the deeoding application in detail. And then accomplishes the the interactive components＇ algorithm design and software implementation for initialization, interrupt handling and key signal processing. Finally, human-comput- er interaction debugging and running over the set-top box based on embedded operating system o It can not only meet the demand for interactive digital television and proliferation services, but compared to other similar productss, it can also improve respond speed and reduce time delays of human-computer interaction.

关 键 词：数字电视 机顶盒 交互组件 RC5码 软件设计 实时性 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]