120hz monitors??
- Thread starter tang0
- Start date
but most cards have at least one Dual Link DVI port?
Soldato
- Joined
- 2 Nov 2007
- Posts
- 4,185
You don't output a 120Hz signal, the display brings it up to 120Hz.
Soldato
- Joined
- 18 Oct 2002
- Posts
- 12,285
- Location
- England
120hz TFTS ?
Myth
Myth
What's the point then? LCD's don't behave the same way CRT's do (which is why we saw > 100 hz refresh rates on some telly's). With a CRT the phosphor starts fading before the next beam strike, leading to flickering that could be irritating and/or headache inducing to some.
With an LCD each pixel is persistent, displaying the same colour until changed, no turning off, no flickering etc.
So "brining it up" to 120hz wouldn't actually do anything, especially if the signal was already only at 60hz (what are you going to do, play every frame twice to get 120hz?!?).
This is just what I've read from people who have attended trade shows where the 120Hz screens have been demonstrated, but apparently, although it's still a 60 Hz signal, the effect of the extra interpolated in-between frames is to reduce ghosting/blurring significantly.
I seem to remember reading somewhere that dvds provide 30FPS, but newer formats (bluray?) provide 30FPS, so 120 being the lowest common denominator of 24 & 30 meant whichever format you where watching the tv/monitor would display the same number of frames for each frame (eg 5 frames for 24fps material and 4 frames for 30fps material). I thought that was the advantage of tvs having 120Hz refresh rate, as anything lower might give slightly less smooth replay. I may be completely wrong in this idea.
I suppose that's a possibility - but it would increase input lag with the extra processing going on. To a certain extent this is what RTC does to reduce ghosting currently. Personally I think we should spend more time and money researching newer panel technologies (OLED and SED) as LCD has become somewhat of a dead end of late (plus the world's supply of Indium - crucial in the manufacture of LCD's - will be gone by 2017 at current estimates - 2009 will be the first year we actually have a defecit as current refined stores are almost depleted).
the output is still 60Hz, but the display is capable of calculating the in between frames through interpolation and this artificially doubles the frame rate. No, they dont operate in the same was as CRT's, but this method is supposed to help reduce ghosting and motion blur. We could certainly see it in TFT displays at some point if they introduced the technology, but at the moment the only techniques being used are backlight scanning and black frame insertion (BFI and MPA)
