"If you’ve noticed that the HD content you watch on your cable or satellite box pales in comparison to the picture quality you get from your Blu-ray player, or you get frustrated when your
TV’s info bar shows that you’re watching 1080i even though you have a 1080p TV, you’re not alone in your disappointment. There is a reason for this, however.
The only way cable and satellite companies can deliver 3,000 channels (ok, maybe we’re exaggerating a little), many of them in HD,
is by compressing their video signals in an effort to squeeze more information into a crowded pipeline. This compression robs the signal of its pristine clarity and sharpness and can introduce blocky color gradations into the picture. For a highly revealing example of the difference, try tuning in to one of your locally broadcast HD stations on both your cable/sat box
and through your TV’s tuner (
for this). Now, switch back and forth between the two and note the difference in quality."
Nedeni buymuş. Kaynak:
Tüm dünyada TV yayını genellikle 1080i oluyormuş.