| 摘要 |
The network provides switched video services by transmitting video packets or copies thereof, which are part of a video signal, to user stations US1/US5 connected to the network, in response to received control signals issued by said user stations. It includes a plurality of intercoupled switching modules SM1/SM3 to realize said transmission, and control circuits CC1/CC3 and copy modules CM1/CM3 associated to distinct ones of these switching modules, to handle the control signals and make the copies respectively. The switching modules are multipath self routing switching modules which are able to convey through the network the video packets/packet copies and control signals. They are intercoupled by groups of links and are each able, when operated by an associated control circuit to convey the video packets/packet copies of a video signal to any one of the links of a predetermined group which is chosen based on address related information concerning the destination of a video signal of which the handled packets form part and which is contained in the control signal related to this video signal. At least one of the copy modules includes a plurality of copy circuits each of which is able to make at least part of the requested copies. <IMAGE> |
