High Quality Video Streaming System for Plasma Diagnostic Using Super SINET

Smooth cooperative research requires effective remote participation. Toward this end, the National Institute for Fusion Science (NIFS) has enhanced its network among domestic institutes. The new network, called the Super Science information network (SINET), connects national universities and governmental organizations and has a 10 G bps backbone. NIFS connected Kyoto University and Nagoya University to this network at a speed of 1 G bps each way in 2002, and plans to connect other universities. In addition, a real-time video streaming system is being developed for remote participation in this network. Due to bandwidth limitations of the network, lossy motion image formats, such as Real Video or MPEG, are widely used for video streaming service. For example, the minimum transfer ratio to send a VGA-sized video image at the rate of 30 fps is 27 MB/s, or 220 M bps, which exceeds ordinal network capacities. However, lossy images cannot be used for physical analysis, because the original information is lost. N...