Patent ID: 6188684
Filing Date: 2001-02-13
Classification: H04B,H04H,H04N,H04Q

Abstract:
A bi-directional communication system comprising:a first communication station and one or more second communication stations, the second communication stations receiving information delivery service from said first communication station through a first communication link, as well as performing data communication with said first communication station using a second communication link, in whichsaid first communication station comprises:a station network;an assignor assigning to a second communication station which requests an information delivery service through said second communication link, a protocol identifier useable in said station network;a connector/disconnector for connecting and disconnecting the second communication link between the first and second communication stations; anda storage for holding, after an information delivery service has been requested and the second communication link has been disconnected, said protocol identifier assigned to the second communication station until a delivery of said information delivery service from the first communication station to said second communication station has been completed.