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Re:Xiaomi launches 49-inch 4K TV for $640 by dmm on Thursday May 15, 2014 @11:19AM (#7749928)
That sounds like what Nvidia's G-Sync does. A in-monitor computer buffers frames and displays them at a rate specified by the computer.

http://www.anandtech.com/show/7436/nvidias-gsync-attempting-...

Re:Xiaomi launches 49-inch 4K TV for $640 by pedrocr on Thursday May 15, 2014 @03:28PM (#7751636)
It sounds like it indeed. Although that particular implementation won't go below 30hz so wouldn't fix this particular case.
Re:Xiaomi launches 49-inch 4K TV for $640 by wmf on Thursday May 15, 2014 @04:29PM (#7752049)
In that case you can display movies at 48 Hz.