In Video 2, from 4:10 to 8:05, the 200Hz technology is explained. If I understand right (my level of english talk comprehension is not optimal), the problem is that LCDs are hold-type displays and, because they refresh each frame from top to bottom, there is never a moment when an eye can see only the image meant to it (left or right). An eye always see a part of the image meant to the other eye, causing ghosting. The problem is explained in this article: http://cmst.curtin.edu.au/local/docs...oods_sehic.pdf
To overcame this problem, Sony uses 200Hz, opening the glass shutter for an eye only half the time, so that each eye sees only its image. At 200Hz, each eye is left blind for 3/4 of times, not just half the time. To compensate for this, brightness is enhanced.
This means that the display is at 200Hz, but the frames are still at 100Hz; look at the pictures on the presentation screen. In a sense, each left or right frame is "double flashed".
This means, in turn, that using 240Hz is the same as 120Hz for judder. LCDs should have the same Judder problem discussed in other threads for Panasonic plasma: 3:2 pulldown.
That there is judder is also confirmated in Video 3, form 2:15 to 2:50. The speaker says it inevitable without Motion Flow.
So: 3D means judder and 3:2 pulldown again ?