The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 2009
Filed:
Jun. 30, 2005
Robert St. Pierre, Sunnyvale, CA (US);
Viswanathan Swaminathan, Fremont, CA (US);
Robert St. Pierre, Sunnyvale, CA (US);
Viswanathan Swaminathan, Fremont, CA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
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.