Patent
1996-03-08
1999-07-27
Ellis, Richard L.
39520049, 395684, H04L 1218
Patent
active
059304731
ABSTRACT:
An apparatus and method for use in a network including source clients and viewer clients connected to one or more shared transmission media. A video server is connected to one of the transmission media and is operative to control the broadcast and storage of multiple live or previously-stored video streams. The control may be provided via remote procedure call (RPC) commands transmitted between the server and the clients. In one embodiment, a video presentation system is provided in which a video stream from a source client is continuously broadcast to a number of viewer clients. One or more of the viewer clients may be authorized by the source client to broadcast an audio and/or video stream to the other clients receiving the source video stream. In another embodiment, a multicast directory is provided to each of a plurality of viewer clients by transmitting directory information in a packet corresponding to a predetermined multicast address. The multicast directory indicates to a particular viewer client which of a number of video programs are available for broadcast to that client.
REFERENCES:
patent: 4882743 (1989-11-01), Mahmound
patent: 5257306 (1993-10-01), Watanabe
patent: 5410343 (1995-04-01), Coddington et al.
patent: 5550982 (1996-08-01), Long et al.
patent: 5608653 (1997-03-01), Palmer et al.
Gang, Jr. Joseph M.
Teng Peter
Thompson Bruce Albert
Tobagi Fouad A.
Ellis Richard L.
Winder Patrice L.
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