发明名称 |
IP-TV BROADCASTING SERVICE SYSTEM AND METHOD USING PHYSICAL LAYER'S MULTICAST SWITCH |
摘要 |
An Internet Protocol Television (IP-TV) broadcasting service system and method using a physical layer multicast switch are provided. The system comprises: a head end which converts an Ethernet signal to a virtual concatenation group (VCG) signal of a synchronous digital hierarchy/synchronous optical network (SDH/SONET); a multicast switch which multicasts the VCG signal in a physical layer; and a tail end which receives the multicasted VCG signal through a Synchronous Transmission Module level n (STM-N) optical link and restores the VCG signal to the Ethernet signal. Therefore, high quality TV broadcasting can be provided in an IP multicast network.
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申请公布号 |
US2008080499(A1) |
申请公布日期 |
2008.04.03 |
申请号 |
US20070678648 |
申请日期 |
2007.02.26 |
申请人 |
CHUN KYUNG GYU;LEE SOON SEOK |
发明人 |
CHUN KYUNG GYU;LEE SOON SEOK |
分类号 |
H04L12/28;H04J3/02 |
主分类号 |
H04L12/28 |
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