节点文献
移动数字电视机顶盒设计
The Design of Mobile Digital TV Set-top Boxes
【摘要】 目前,有线电视早已普及,而移动数字电视还处于发展阶段.为此,本文设计了一种DMB-TH地面数字电视机顶盒,即移动数字电视机顶盒.首先,介绍了硬件设计方案,其中主芯片采用ST公司出品的STM5105,该芯片具有主频高、反应速度快等优点.其次,详细介绍了红外接收模块、OSD模块、频道搜索模块和解复用模块等模块的软件设计.由于采用了快速检测频道搜索的反馈信号、短时间内强制退出搜索子系统等创新技术,使频道搜索速度和频道切换速度大为提高.该机顶盒能够成功地播放广电发送的地面数字电视.
【Abstract】 Nowadays,the cable TV is already universal,but mobile digital TV is still in the development stage.In this paper,DMB-TH terrestrial digital TV set-top boxes are studied.Firstly,this paper introduces the hardware design module.The main chip is STM5105 which is produced by ST.It has high frequency and reaction speed.Secondly,this paper introduces the software design which includes infrared receiving module,OSD module,channel searching module,demultiplexing module and so on.Using the innovative technique such as the rapid detection of the feedback signals sent by the channel searching module and mandatory rapid exit from the channel searching module,the channel searching speed and the channel switching speed are greatly improved.As a result,the set-top boxes designed in the paper can be successfully used to broadcast the terrestrial digital broadcast television.
- 【文献出处】 厦门大学学报(自然科学版) ,Journal of Xiamen University(Natural Science) , 编辑部邮箱 ,2008年04期
- 【分类号】TP311.52
- 【被引频次】1
- 【下载频次】67