O tu:
http://www.homecinemachoice.com/articles/faq/tv/100h
z.shtml

Znalazłem takie ładne wyjaśnienie:

100Hz processing, disregarding any extra processing that normally comes
with it for now, basically stores each interlaced frame in memory and
displays it again, in the gap between this frame originally showing, and
the next interlaced frame.

So the number of frames per second is doubled from the normal 50Hz to
100Hz and the sometimes annoying flicker associated with TV screens is
eliminated.

--
Marcin