In article Eeyore writes:

How deliberately confusing is that ?

PAL = Phase Alternate Line.
http://en.wikipedia.org/wiki/PAL

NTSC = never twice the same colour.
http://www.ee.surrey.ac.uk/Contrib/WorldTV/why.html

Apparently only to someone who has had their brain fried by the 50 Hz
flicker of slow television.

It has been accepted by many, that NTSC has given *better* color than
PAL ever since solid state electronics have made phase response stable
in the early 1970's.

But, we are talking about ATSC here.

Alan