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US08289978B2 Broadcast interactive television system 有权
广播互动电视系统

Broadcast interactive television system
Abstract:
A system that incorporates teachings of the present disclosure may include, for example, a system having a controller to deliver broadcast channels by way of interactive TV (iTV) edge routers using multicast virtual private networks, share a same multicast state for the broadcast channels and share a same multicast delivery tree for the broadcast channels. Other embodiments are disclosed.
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