发明名称 |
IP broadcasting system and a multicast group management apparatus for the same |
摘要 |
The present invention provides an IP broadcasting system that can receive IP broadcasting videos over an IP multicast network. In the IP broadcasting system, a multicast group management apparatus for IP broadcasting that holds multicast group identifiers is connected via an IP multicast network over which IP broadcasting services are provided. When a user issues a request to switch an IP broadcasting channel from an IP broadcasting terminal, a query message including the requested IP broadcasting channel identifier is transmitted to a management apparatus. The IP broadcasting terminal receives a response message indicating the correspondence between the IP broadcasting channel identifier and a multicast group identifier, and transmits a video reception request message to a multicast group by using the received multicast group identifier.
|
申请公布号 |
US8522288(B2) |
申请公布日期 |
2013.08.27 |
申请号 |
US20070778969 |
申请日期 |
2007.07.17 |
申请人 |
IKEDA HIROKI;SAKAMOTO KENICHI;SHINAGAWA TAISHI;HITACHI, LTD. |
发明人 |
IKEDA HIROKI;SAKAMOTO KENICHI;SHINAGAWA TAISHI |
分类号 |
H04N7/173 |
主分类号 |
H04N7/173 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|