You may feel these symptoms first in your feet and then possibly in your shins: 1  Numbness, tingling and pain. 2  Unsteady when standing, walking. 3  Muscle weakness (including weak ankles) or cramps.
720HD is 1280 x 720 pixels per frame. The highest resolution that the DVD format can support is 720 x 480 pixels per frame for NTSC (or 720 x 576 pixels per frame for PAL), which is at best only 37.5% of the resolution of 720HD.
Blu-ray disc's can only be played on a Blu-ray player. There are many Blu-ray players out there, the most popular, and cheapest in price is the Playstation 3 at $399.Blu-ray players can play and upscale DVDs however. The same applies to HD DVDs, where HD DVDs can only be played on an HD DVD player.The only manufacturer of HD DVD players is Toshiba, where during the recent black Friday went as low as $99 (albeit 1080i only).lu-ray players can play and upscale DVDs however. The same applies to HD DVDs, where HD DVDs can only be played on an HD DVD player. The only manufacturer of HD DVD players is Toshiba, where during the recent black Friday went as low as $99 (albeit 1080i only).