Skype Limited

Jan Plasberg

Henrik Astrom

Koen Bernard Vos

Andrei Jefremov

A terminal for transmitting a voice signal, comprising: a transmitter having a first transmission module arranged to transmit signals over a packet-switched data network and a second transmission module arranged to transmit signals over a circuit-switched telephony network; a microphone for generating a voice signal; and signal processing apparatus configured to generate a first signal and a second signal from the voice signal, each representing information from the voice signal over a same portion of time. The signal processing apparatus is further configured to supply the first signal to the first transmission module for transmission to a receiver via the packet-switched data network, and to supply the second signal to the second transmission module for transmission to the receiver via the circuit-switched telephony network. There is also provided a terminal for receiving such signals and reconstructing the voice signal, and corresponding methods and program products.

Enhanced circuit-switched calls

Method, communications device and computer program product for determining network quality for the communications device which is capable of communicating over a communications network. The method comprises determining location information associated with a location of the device, querying a database using the determined location information, wherein the database stores a plurality of entries each comprising location information and corresponding network quality information, and obtaining, from the database in response to the query, network quality information from at least one entry of said entries which comprises location information corresponding to the determined location information.

Determining network quality

Method, apparatus and computer program product for processing a video signal, the video signal comprising a plurality of frames, wherein the frames of the video signal are received at a jitter buffer, and the frames are output from the jitter buffer at a variable output rate to account for jitter in the received frames. Variations in the output rate are controlled in dependence upon the visual information content of the video signal, the visual information content of the video signal being the portion of the video signal that is to be displayed when the video signal is played out.

Growing community of inventors

Stockholm, Sweden

Jan Plasberg