1. High Quality Video Broadcast System for Next Generation Internet Kazunori Sugiura(CRL) Motonori Nakamura(Kyoto Univ.) Akihiko Machizawa(CRL)_ Takahiro Kikuchi(RCAC,TDI) Naoto Morishima(NAIST) Shin-ichi Nakagawa(CRL) With cooperation of: WIDE Project

2. Characteristics of Internet best effort basis network Network Characteristics… –Jitter –Network Packet losses –Congestion Control –affects Stream media(Stream packet)

3. Current Internet Video Broadcasting System Limitation in Network Bandwidth Massive compression of Video and Audio data Realtime Teleconferencing System –High cost equipment

4. Requirements(Request) High Quality Picture NTSC Quality Video High Quality Sound CD Quality Audio Delayless transfer low cost solution Mid range bandwidth( 10Mbps and higher )

5. Required Network Bandwidth is expanding 19941998200220041990 (Year) 10K 100K 1M 10M 100M 1G1G Amount of network bandwidth(Byte)

6. Development of Network Bandwidth Use of Mid-High speed network becomes realistic appearance of high-speed networks –ATM –WDM High Speed LANs –100BaseT, Gigabit Ethernet

7. Internet PCRouter Internet Live Broadcasting System

8. Internet Live Broad and Multi-cast System RealServer Real Client Wireless Mic. Audio Selector Video Input Monitor, Antenna DV Video Recorder Video Selector Main Power Supply DV Video recorder Keyboard PC Monitor NTSC PAL SECAM RGB Scan Converter Main Power Supply Rack 1Rack 2

9. Internet Connection from KRP(19990727) NTT Atomis 7M Tokyo Univ. Megalink Tokyo Univ. aa03 Tokyo Univ. aal3 JGN FORE Kyoto Univ. 7m ASTEM Atomis 7m 3F KRP Atomis 7m 3F KRP Cisco7206 1/15524/155 1/166 2/166 KDD Atomis 7M KDD Cisco7507 0/166 1/166 ATM Line KRP 100BaseTX Ethernet Internet

10. Network Traffic Octets Time

11. DV Conference System Network Traffic Output Octets Time