微型机与应用
微型機與應用
미형궤여응용
MICROCOMPUTER & ITS APPLICATIONS
2011年
20期
96-98
,共3页
数字电视%机顶盒%交互组件%RC5码%软件设计%实时性
數字電視%機頂盒%交互組件%RC5碼%軟件設計%實時性
수자전시%궤정합%교호조건%RC5마%연건설계%실시성
digilal TV%STB%interactive component%RC5 code%software design%real-time
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。
對交互組件的RC5碼信號規範進行分析,定義瞭遙控器的脈遲、狀態變量以及解碼應用的數據類型,完成交互組件的初始化、中斷處理、鍵值信號處理的流程設計與軟件實現。最後基于嵌入式操作繫統在機頂盒硬件上進行人機交互運行調試。結果錶明,該交互組件不僅能滿足數字電視和交互增值業務的需求,而且相比其他同類產品在響應速度上得到提高,人機交互的時延有所減小。
대교호조건적RC5마신호규범진행분석,정의료요공기적맥충、상태변량이급해마응용적수거류형,완성교호조건적초시화、중단처리、건치신호처리적류정설계여연건실현。최후기우감입식조작계통재궤정합경건상진행인궤교호운행조시。결과표명,해교호조건불부능만족수자전시화교호증치업무적수구,이차상비기타동류산품재향응속도상득도제고,인궤교호적시연유소감소。
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.