Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
April 28, 2009
Patent Application Number
11172352
Date Filed
June 30, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
A method for performing trick-play functions in a multicast stream, involving generating a session announcement protocol (SAP) message, wherein the SAP announcement includes a first internet protocol (IP) address of a multicast source, forwarding the SAP message to a multicast router, wherein the multicast router includes an attached storage to cache the multicast stream, substituting the first IP address with a second IP address associated with the multicast router, requesting a trick-play function to obtain a unicast stream, and receiving the unicast stream from the attached storage based on the trick-play function.
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