How to make high-definition TV receive ordinary station high-definition signal?
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Today's TV signals, including digital TV signals, analog TV signals, and satellite TV signals, are not high definition. So while the TV set is high definition, it doesn't actually see the effect of hd. Not to say that TV has high resolution, no matter what signals can be seen in HD, must signal source (high-definition standard production), the player (HD standard), receiver (HD TV standard) all have, we can see the effect of hd. At present, the definition of digital TV programs is relatively best, in the open area plus set-top boxes.
HD set-top box. But high-definition set-top boxes are expensive.