American digital video transmission standard for cable Television was introduced and a software method was illuminated to implement channel decoding by DSP technology.
介绍了美国数字有线电视传输标准以及一种采用DSP技术进行软件信道解码的方法，给出了所用关键技术和实现算法。
And the streaming server also has IPTV STB (set-top box) function to receive video-audio digital stream from network and play the video-audio digital stream after decoding.
该流服务器还具有IPTV机顶盒的功能，从网络上接收视音数字流解码后在电视机上播放。
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