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:
Jul. 23, 2013
Filed:
Sep. 30, 2009
Yetik Serbest, Austin, TX (US);
Yetik Serbest, Austin, TX (US);
AT&T Intellectual Property I, L.P., Atlanta, GA (US);
Abstract
A method and system for multicasting IPTV channels includes using both a designated and a redundant network routing device. When the designated routing device detects that an MCDN network connection to an IPTV multicast source is unavailable, the designated routing device reduces its designation priority to a lower value. A message is sent to the redundant routing device with an instruction to increase its designation priority to a higher value. After the designation priorities have been modified, the designated routing device may serve as a new redundant routing device, while the redundant routing device may serve as a new designated routing device. The routing devices may remain in the new configuration, even after interrupted network connections are restored.