Realnetworks Gmbh

Intel Corporation

Twisted Pair Solutions, Inc.

Bryan D Vergato

Sujal M Patel

Jeffrey M Ayars

Bradley D Hefta-Gaub

Rahul Agarwal

Alan Francis Lippman

Dale R Stammen

Philip Rosedale

Gary S Greenbaum

Derick J Clack

Mark D Bertoglio

Shaun Botha

Yuri Kiryanov

Edward E Buchwalter

Guillaume F Rava

Thomas Richard Bogart

Michael A Passinsky

A system and method are provided wherein information is disseminated using a reliable IP multicast network implementation coupled with dynamically assigned proxy nodes serving as zonal aggregation points. These nodes share information with each other over the reliable IP multicast network, augmenting this function with a reliable point-to-point communication infrastructure between proxy nodes in those instances where IP multicast is not available or prone to error.

Method, apparatus, system, and article of manufacture for reliable low-bandwidth information delivery across mixed-mode unicast and multicast networks

A system and method provide random access to a multimedia object over a network. One embodiment of the invention includes a streaming media server that is connected to a client computer over a network. The streaming media server includes at least one multimedia object that is adapted for transmission ('streaming') across the network. A pre-roll calculation program determines a pre-roll for each segment of the multimedia object and generates a modified multimedia object which includes a pre-roll for each of its segments, a pre-roll identifying a portion of the multimedia object to be transmitted by the streaming media server and received by the client computer prior to playback of the multimedia object at a selected segment. The pre-roll allows the client computer to present, starting at a selected segment, the multimedia object in its entirety without interruption. The pre-roll calculation program further facilitates the design of the multimedia object to minimize delays associated with random accesses to segments of the multimedia object.

System and method for providing random access to a multimedia object over a network

A system and method provide random access to a multimedia object over a network. One embodiment of the invention includes a streaming media server that is connected to a client computer over a network. The streaming media server includes at least one multimedia object that is adapted for transmission (&ldquo;streaming&rdquo;) across the network. A pre-roll calculation program determines a pre-roll for each segment of the multimedia object and generates a modified multimedia object which includes a pre-roll for each of its segments, a pre-roll identifying a portion of the multimedia object to be transmitted by the streaming media server and received by the client computer prior to playback of the multimedia object at a selected segment. The pre-roll allows the client computer to present, starting at a selected segment, the multimedia object in its entirety without interruption. The pre-roll calculation program further facilitates the design of the multimedia object to minimize delays associated with random accesses to segments of the multimedia object.

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Seattle, WA, United States of America

Bryan D Vergato