Abstract: Methods and systems for seamlessly broadcasting data to a user moving among a plurality of broadcast coverage areas. A first signal containing desired data may be received by a receiving device at a user location, wherein the first signal is broadcast from a first transmitting station associated with a first broadcast coverage. Thereafter, the receiving device (e.g., a radio or in-vehicle television) can be automatically instructed to search for and tune to a second transmitting station associated with a second broadcast coverage area broadcasting a second signal containing the desired data if the first signal fades at the user location, thereby permitting the user to seamlessly receive data as the user moves among a plurality of broadcast coverage areas.

Abstract: A method of audio stream monitoring on behalf of a calling party by filtering an audio stream sent to an audio-capable device. The audio stream is received from an audio stream source and compared to at least one audio stream portion. If an audio stream portion is identified for removal from the audio stream, it is removed from the audio stream resulting in a filtered audio stream.

Abstract: Methods and systems for seamlessly broadcasting data to a user moving among a plurality of broadcast coverage areas. A first signal containing desired data may be received by a receiving device at a user location, wherein the first signal is broadcast from a first transmitting station associated with a first broadcast coverage. Thereafter, the receiving device (e.g., a radio or in-vehicle television) can be automatically instructed to search for and tune to a second transmitting station associated with a second broadcast coverage area broadcasting a second signal containing the desired data if the first signal fades at the user location, thereby permitting the user to seamlessly receive data as the user moves among a plurality of broadcast coverage areas.

Abstract: In a connection-oriented packet switching network, different paths through the network from one point to another are likely to have different delay. The invention is a method and network architecture for rerouting data packets from one path to another path without loss, duplication, or mis-ordering of the packets (or cells) despite unpredictable differences in delay incurred by packets on the replacement path relative to packets on the original path. The invention uses a marker cell, which is either transmitted along one path or along both paths. At the downstream convergence of the original and replacement path, all pre-marker data packets arriving on the original path are first transmitted and then all post-marker data packets on the replacement path are transmitted. Proper use of the marker provides a means for ensuring that the data packets will be delivered in the proper order, despite the order in which the data packets are received over the original path and the replacement path.

Abstract: When protected network connections on a connection oriented network are disrupted because a network resource fails (e.g. the severing of a fiber cable upon which multiple links are multiplexed), they must be rerouted around the network failure. This invention expedites this rerouting and permits it to be carried out in a distributed manner similar to conventional routing. Advantageously, the amount of link bandwidth reserved for rerouting of failed connections is reduced relative to conventional methods.For each protected connection, for each anticipated failure condition, a "contingent path" is selected shortly after the connection is established. This contingent path is then used to reroute that connection in the event of the occurrence of that failure condition.