Subfield Motion - This technology is used in the Samsung plasma TVs. This technology has the analogue technology used in LED TVs Clear motion rate (CMR) in TV Samsung.
The technology used to create a smooth and clear images in dynamic scenes, the technology method of operation is very simple, because the standards stipulate the maximum number of frames per second, a maximum of 60, what would create a visually smoother image on the TV screen, creates extra frames. They may be the same, and if your TV has a powerful processor, it can be created and intermediate frames. Since plasma TVs have a negligible response time at them is quite real to reach the screen refresh rate of 1000 frames per second. The second question is that it is not always necessary.