| Patent application number | Description | Published |
|---|
| 20090044242 | System and method of providing video content - A method of providing video content is disclosed that includes receiving video content associated with a television stream from a video source at a server of a video distribution network. The method also includes sending a primary multicast video stream corresponding to the video content to a video distribution network entity via an Internet Protocol (IP) network. The primary multicast video stream is associated with a first bandwidth. Further, the method includes sending a secondary multicast video stream to the video distribution network entity via the IP network. The secondary multicast video stream is associated with a second bandwidth. The primary multicast video stream and the secondary multicast video stream are accessible to a set-top box device via the video distribution network entity in response to a channel change request that indicates the television stream. In addition, the frames of the secondary multicast video stream may be delayed with respect to their counterparts in the primary multicast video stream. This insures that, after sufficient buffering of frames of the primary multicast video stream, when the set-top box device switches from the secondary multicast video stream to the primary multicast video stream there will be no noticeable time shift. | 02-12-2009 |
| 20090185496 | Network performance and reliability evaluation taking into account attributes other than only the capacities of edges - Network performability characteristics with improved accuracy are derived by taking into account, in the various analyzed network failure states, attributes of elements at the logical level other than just the capacities of edges, as well as by taking into account one or more “abstract components,” such as scheduled maintenance, and by using multiple traffic matrices. | 07-23-2009 |
| 20090185499 | Network performance and reliability evaluation taking into account abstract components - Network performability characteristics with improved accuracy are derived by taking into account, in the various analyzed network failure states, attributes of elements at the logical level other than just the capacities of edges, as well as by taking into account one or more “abstract components,” such as scheduled maintenance, and by using multiple traffic matrices. | 07-23-2009 |
| 20090187795 | Network performance and reliability evaluation taking into account multiple traffic matrices - Network performability characteristics with improved accuracy are derived by taking into account, in the various analyzed network failure states, attributes of elements at the logical level other than just the capacities of edges, as well as by taking into account one or more “abstract components,” such as scheduled maintenance, and by using multiple traffic matrices. | 07-23-2009 |
| 20090252033 | SYSTEM AND METHOD OF DISTRIBUTING MEDIA CONTENT - Systems and methods to distribute media content are provided. A particular method includes receiving first link weighting factors and second link weighting factors at a router of a node of a multicast network and determining a primary path to a next hop node based on the first link weighting factors. Additionally, the method includes determining a backup path from a router of the primary path to the next hop node based on the second link weighting factors. The backup path does not overlap any primary path between two nodes of the network. Further, the method includes receiving a data packet from a parent node and routing a copy of the data packet from the router to the next hop node via the backup path, when a network link related to the router has failed. The method also includes routing data packets via a re-configured multicast tree that excludes the failed link. | 10-08-2009 |
| 20100067899 | Standby restoration signaling for optical networks - Systems and methods are described that provide a distributed restoration signaling protocol for shared mesh restoration with standbys for transparent optical networks. | 03-18-2010 |
| 20110033183 | 1:N sparing of router resources at geographically dispersed locations - Systems and methods are described that that dynamically configure high-speed data link lightpaths between access routers and backbone routers at geographically dispersed locations to reassign traffic when a backbone router fails or is removed from service. Embodiments reduce the quantity of backbone router ports used in dual backbone router-homed networks. | 02-10-2011 |
