Alcatel Lucent

Alcatel

Philippe Burger

Rabih Abou-Chakra

Jean-Marc Zaun

Patrick Boulandet

Rodolphe Querelle

A device is dedicated to the processing of audio and video data for multimedia communication, via an asynchronous network, between first LAN audio and video terminals and second LAN audio and video terminals. This device includes i) a connector which establishes communications with the first LAN audio and video terminals and with other connectors installed in another device, ii) a first dating module which attaches a transmit time mark and an identifier to the audio and video data emitted by the first LAN audio and video terminals, before their transmission to the other connector and iii) a processor which determines a time difference representing the transmission time difference between the received audio and video data and presenting the same identifier.

Audio and video data processing device for multimedia communication via a local network set up within an asynchronous network

A method to buffer a data stream at its reception, performed by a receiver of the data stream. Data sent by a sender is transferred over a connection-less network in packets encapsulated into frames. The method of buffering itself includes the steps of storing the packets into a buffer of a specific size (B ). When the receiver received at least one of the packets, its delay (jitter) is measured and compared with some predefined value. Depending on the result of that comparison, said buffer size (B ) will be adapted dynamically such to optimize the transfer of the packets according to some predefined criteria.

Auto-adaptive jitter buffer method for data stream involves comparing delay of packet with predefined value and using comparison result to set buffer size

Growing community of inventors

Mutzig, France

Philippe Burger