Systems for Multicast Transmission, Network Access, and Advanced Sound Generation (DEAL 455)

This lot is generally related to multicast transmission of messages through a communication network. Disclosed is a technique to forward a stream of multicast messages by transmitting the messages from a multicast router to a multicast subscriber device by inverse multiplexing the stream of multicast messages. The system converts the stream of multicast messages into multiple parts and transmits each part via multiple communication channels. Also, the system demultiplexing the multiple parts uses an inverse demultiplexer for the multicast subscriber device and forwards the messages to respective communication channels. A patent in the lot discloses a technique for providing access to a first and a second network. Further disclosed are techniquest to provide an efficient and compact sound generator which provides sound in a relatively large frequency range or low frequencies in sound generator system such as loudspeaker. The technology may be implemented in communication systems, multicast communication system, packet data networks, network verification system, loudspeakers, speakers, etc.