Originally Posted by Dalelutz
Pal didn't really interest me. Or is there something I don't know about pal. I thought it was a totally different screen display. In any event Pal doesn't really interest me. But if hd could be region free, I felt there might be some hope for sd dvd too. oh well.
With regards to the new HD formats v. PAL and NTSC, keep the following in mind:
American NTSC = 480i/60
European/Japanese PAL = 576i/50
HD DVD and BD = 1080p/24 i.e. 1920 vertical lines * 1080 horizontal lines at 24 frames per second.
The i (interlaced) and p (progressive) refer to which horizontal lines get refreshed (at the spedified refresh rate). With i, the even- and odd-numbered lines get refreshed alternately. With p, the entire screen gets refreshed each time.
So with regards to the HD formats, the incompatibilities of PAL, NTSC, Secam are a thing of the past.
In addition to 1080p, HD DVD is region free. This means that you can buy an HD DVD released in any country and play it with any HD DVD player.
SD DVD playback on HD DVD players, however, has the same restriction as normal DVD players do i.e. SD DVD region coding applies, and the US Toshibas (A2, A20 and XA2) will only play NTSC DVDs, not PAL.
The Toshibas for the European market (E1, EP10 and XE1) will play both PAL and NTSC (most DVD players sold in Europe can read both PAL and NTSC and the Euro Toshibas are no exception).