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Progressive Scan DVD Players
On 27/7/03 3:38 pm, in article , "Keith
I have read the really good explanation of progressive scanning at
http://www.hometheaterhifi.com & I can see that it has significant
advantages for NTSC which uses 3:2 pull down to display 24fps film on a
60 field display.
Yep - there are huge advantages to removing the 3:2 pull down artefacts
inherent in 60Hz interlace transfers.
I'm not so sure that there is as much improvement for PAL which uses 2:2
pull down & so just needs to interpolate the two fields into one 25Hz
Well if you can merge the 2 fields into one frame then you can then display
each frame twice with no motion judder (as the two fields are time
co-incident in film) and avoid interlace twitter that would otherwise happen
if you just displayed each field consecutively.
I have a Hitachi TV which offers progressive scan & I use this for
displaying normal TV broadcasts froma Freeview box. I know that this is
really no more than a field store but it does improve the perceived
It should improve film/flickered video - but it may not improve normal 50Hz
video as it is interpolating extra motion information to make-up the "other"
field that is not broadcast.
Does anyone have any first hand experience of a progressive scan DVD
player in the UK on PAL connected to a display device such as a
projector or plasma where any improvement would be most noticeable.
Suspect that film sourced material (where there is no inter-field motion)
will fair better than video material (where there can be motion between