摘要
主要介绍了数字电视机顶盒的工作原理及其各组成部分的作用,从硬件系统和软件系统两个层面及其主要包括的信道解码、信源解码、嵌入式CPU、MPEG-2解压缩、机顶盒软件等各部分入手,重点介绍了机顶盒的关键技术。
This paper introduced the working principle of digital TV set-top boxes and the functions of its components, including the hardware and software systems at two levels, its main channel decoding,source decoding,embedded CPU, MPEG -2 decompression, set top box software. It focused on the key technology of set-top box.
出处
《中国有线电视》
2010年第4期473-475,共3页
China Digital Cable TV
关键词
数字电视机顶盒
信道
信源
纠错
set-top box
information channels
information source
error correction
