From what I take of the new 120Hz trend is that they do indeed show a 1080p image 120 times every second, no interlacing. Now I don't think you need a 120Hz source, seeing as there is no such thing as 120Hz media anyway. The advantage is that the LCD can now show both 30fps HDTV and 24fps HD-disc movies with no 3/2 pull down. No more need for Telecine judder introduced by CCD chips. As you will notice 120/24 = 5. So each frame will be shown a full 5 times each instead of a combination of 3 then 2 for each frame on 60Hz TVs. HD-DVD and Blu-Ray are still encoded at 24fps on the disc. And HDTV is 30fps, which is 120/30 = 4.
You might be confused because a lot of the original 120Hz TVs earlier this year were just 720p displays, but these new ones are full 1080p.
As I understand it, the point of these "120 Hz" panals is that they do motion interpolation (no relation to interlacing). So from a 24fps source, rather than showing the same frame 5 times, it would try to create inbetween frames to smooth out the motion. I've not seen one in action, so I don't know how well they succeed at this.
My earlier question was if these panals can receive a 120fps source.
Reader Comments (Page 1 of 1)
Phil @ May 24th 2007 3:15PM
It looks like 10-bit panels.
From what I take of the new 120Hz trend is that they do indeed show a 1080p image 120 times every second, no interlacing. Now I don't think you need a 120Hz source, seeing as there is no such thing as 120Hz media anyway. The advantage is that the LCD can now show both 30fps HDTV and 24fps HD-disc movies with no 3/2 pull down. No more need for Telecine judder introduced by CCD chips. As you will notice 120/24 = 5. So each frame will be shown a full 5 times each instead of a combination of 3 then 2 for each frame on 60Hz TVs. HD-DVD and Blu-Ray are still encoded at 24fps on the disc. And HDTV is 30fps, which is 120/30 = 4.
You might be confused because a lot of the original 120Hz TVs earlier this year were just 720p displays, but these new ones are full 1080p.
Jerry @ May 24th 2007 5:25PM
As I understand it, the point of these "120 Hz" panals is that they do motion interpolation (no relation to interlacing). So from a 24fps source, rather than showing the same frame 5 times, it would try to create inbetween frames to smooth out the motion. I've not seen one in action, so I don't know how well they succeed at this.
My earlier question was if these panals can receive a 120fps source.