Alcatel Lucent

Alcatel

Nicolas Bouche

Gerard Delegue

Paul Labrogere

St&eacute;phane Lovisa

Vincent Billault

An immersive videoconference method wherein multiple participants () in different locations () remotely interact with each other through a telecommunication network architecture (), wherein the method comprises at the location () of a given participant (); &#x2014;capturing video images of the participant by a pair of video cameras (A,B); &#x2014;detecting, tracking and determining size and position related parameters of the participant in the video images; &#x2014;generating a single elementary video stream related to the participant; &#x2014;associating a room identifier to the elementary video stream, the room identifier being uniquely associated to the given participant; &#x2014;sending the elementary video stream, the size and position related parameters and the room identifier (A,A,A) to a centralized entity (); &#x2014;repeating the above steps for each participant () at the different location (); wherein the method further comprises at the centralized entity (): &#x2014;creating a virtual room () by combining the elementary video streams (A,A,A) for all the participants; &#x2014;staging the elementary video streams of all the participants in said virtual room and computing a scene specification associated to the room identifier of each participant based on the size and position related parameters of all the participants; and &#x2014;generating, for each participant, a single composite video stream (B,B,B) of the virtual room () that displays the 2D video of the other participants sized and positioned as if the participants () were in the same virtual room () based on the scene specification and a combination of the elementary video streams of the other participants.

Immersive videoconference method and system

Method for enriching content of a web page () displayed for a user on a computer () connected to a computerized network () and provided with a web browser (), said method comprising the steps of: the web browser () sending a request for a web page () to a distant web server (), upon receipt of the web page () from the web server (), the web browser () parsing the web page () for contact information, upon detection of contact information within the web page (), the web browser () sending a request for presence information () associated with said contact information to at least one presence server (), upon receipt of the presence information () from the presence server(s) (), the web browser () displaying the web page () on the computer () together with the presence information ().

Method for enriching content of a web page with presence information

The present invention concerns an optical component having at least one guide with a ridge structure obtained by chemical etching on a substrate made of semiconductor material, the ridge having a base and a top face, the guide having an outline with at least one curved section, the tangent at any point on the outline defining the local orientation (&bgr;) of the guide. According to the invention, the width of the base (weff) of the ridge is substantially constant all along the guide and the width of the top face (w) of the ridge varies according to the local orientation (&bgr;) of the guide with respect to the reference crystallographic direction (R) of the substrate.

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Nozay, France

Nicolas Bouche