QUOTE(fadthil @ Sep 14 2009, 11:07 PM)
Thanx bro ar & moo...
(1) ok, got the point... but I still want to know the real difference between (2) & (3). No.2 seem to be a feature from a HDTV like bro moo explained which I can understand and saw a demo before at BEST DENKI. What about (3)? Other forums keep mentioning this term (motion interpolation) that's refering to the frame movement of images of something too....like video movement as opposed to film movement (digital recording vs film?)
I hope tech gurus like bro anfieldude or bro aiman can shed some light?

fathil,
LCDs require some form of frame interpolation due to the nature of their refresh rates. As such, frame/motion interpolation is normally there in all LCDs. Sony's motionflow is their way of doing frame interpolation. The algorithms usually due a lot more processing to try to maintain a smooth image on screen. Most algorithms analyze the frames, say 1,2 and insert frames in between them and refresh them on the screen. Seems easy, but in most implementations they introduce artifacting. The problem with most implementations are that it gives the film a more video like feel, because there is so much manipulation of the film to begin with. I would advise to turn all off when viewing 24fps content, unless u feel u like the look of video compared to film.
As you would have noticed, most plasmas do not mention frame interpolation due to the nature of plasma refresh. However, most plasmas still have do it on 24fps material. Panasonic plasmas take the 24fps repeat every frame and refresh at 48fps. The higher end Panny plasma & Samsung plasmas I believe refresh at 96fps and Pioneer plasmas refresh it at 72Hz. This is to reduce the judder effect of panning shots. However, the implementation of this can still be flawed. One example is Pannys implementation is not as good as the rest.
Projectors use frame interpolation and frame duplication depending on the projector company.
I believe for those viewing BD material, having a display that can properly display 24fps is critical. Whenever, a display cannot do that and does pulldown to display at 60Hz, it is a real mess!
The aim of frame interpolation/motion interpolation is to give the viewer a better smoother feel to the movie.
Hope this helps.