System clock recover is the key in digital TV system.

系统时钟恢复是数字电视系统设计中的难点。

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Every month it appears more likely that the pay-TV system will break down.

每个月，付费电视系统似乎更有可能停止运转。

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You can transmit them through a cable TV system along with hundreds of other composite signals.

可以透过有线电视系统把它们和其它数以百计的组合视频信号一道传输出去。

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But TV receivers that use what is called a passive glasses system are costly.

VOA: special.2010.01.26

But Microsoft's internet-TV system does do one thing other don't -- full-body motion control.

CNN: Microsoft tries to redefine the couch potato

One big problem: Sky Angel distributes its signals over the Internet instead of a conventional cable-TV system.

FORBES: The Tiny TV Broadcaster That Cable And Internet Giants Are Trying To Kill

Every month it appears more likely that the pay-TV system will break down.

ECONOMIST: The future of pay-television