Interdigital Vc Holdings, Inc.

Interdigital Ce Patent Holdings

Thomson Licensing

Interdigital Madison Patent Holdings, Sas

Interdigital Ce Patent Holdings, Sas

Charline Taibi

Remi Houdaille

Stephane Gouache

Charles Salmon-Legagneur

Yvon Legallais

Frederique Humbert

Serge Travert

Renaud Dore

Patrick Fontaine

Mary-Luc Champel

Nicolas Le Scouarnec

Luis Montalvo

Franck Aumont

Rémi Houdaille

Adrien Gegout

Stéphane Gouache

The disclosure discloses methods and devices for transmitting and rendering a 3D scene. The method for rendering comprises: receiving a manifest; requesting, from a server, at least one available first data stream; requesting, from the server, a subset of available second data streams selected based at least on an angular sector associated with the at least one available second data stream; and rendering the 3D scene using the central patch content from the requested first data streams and parallax patch content from the requested selected subset of available second data streams.

Methods for transmitting and rendering a 3D scene, method for generating patches, and corresponding devices and computer programs

During a streaming session of tile based immersive video, upon request to switch from at a current tile segment associated with a current tile to a new tile segment associated with a new tile at a reference time, an encoder () is providing to generate one or more complementary frames of the new tile segment allowing a decoding, by a requesting player, of the new tile segment from the reference time.

Encoder and method for encoding a tile-based immersive video

According to embodiments, an enhancement layer segment may be requested in addition to a base layer segment for a same video. The enhancement layer may be requested, in a low priority, so that the base layer may be delivered in priority. If the enhancement layer can be obtained by a deadline, a subsequent base layer segment may be requested at a higher quality (e.g., at a bitrate lower than or equal to the sum of the bitrates of the previously requested base layer and enhancement layer segments). If, for example, at a playback time, the enhancement layer segment is not obtained, it may be determined that the quality cannot be increased and subsequent requests for enhancement layer segments may be cancelled (e.g., not transmitted). According to embodiments, probing may repeat (e.g., any of immediately, regularly, periodically, . . . ) to detect available bandwidth variations.

Method and apparatuses for sending and receiving a video

The disclosure discloses methods and devices for transmitting and rendering a 3D scene. The method for transmitting comprises: segmenting a space into m angular sectors, the m angular sectors each corresponding to an angular distance from a viewport, and the space into n depth ranges; obtaining () at least one first patch, generated from a first view of the 3D scene, said at least one first patch comprising a texture component and a depth component; obtaining () at least one atlas, generated from at least one second view of the 3D scene, said at least one atlas being built by packing together at least one second patch generated for at least one point of one of said second view that is not visible in another view of the 3D scene and that belongs to a same angular sector among the m angular sectors, and a same depth range among the n depth ranges, at least one of morn being greater than or equal to 2, said at least one second patch comprising a texture component and a depth component, wherein each of the at least one first patch and the at least one second patch is based on at least one of a sector and a depth; generating () a first subset of streams comprising m′ pairs of streams and a second subset of streams comprising m′×n′ pairs of streams; and transmitting () the first and second subsets of streams to the terminal.

An encoder is configured for encoding an immersive video spatially tiled with a set of tiles in one or more representations in accordance with corresponding assigned bit-rate upper limits depending on obtained proximity values of the corresponding tiles.

Method and network equipment for encoding an immersive video spatially tiled with a set of tiles

The invention concerns a method for adapting the downloading behavior of a client terminal configured to receive a multimedia content from at least one server, said multimedia content being defined by at least one representation, wherein it comprises the steps of: requesting (S) a first part of said multimedia content with a given representation; detecting (S) if a cache between is located along the transmission path the client terminal and a server, based on the request of said first part; in case (S) a cache is detected, requesting a second part of said multimedia content with a representation depending on at least one performance criterion.

Method for adapting the downloading behavior of a client terminal configured, to receive multimedia content, and corresponding terminal

Cache (DANE) located along a transmission path between client terminals (CT) and at least one server (SE) and configured to receive requests from client terminals (CT) for segments of a multimedia content available at several representations, which comprises: &#x2014;an interface of connection () for receiving, from a first client terminal, a first request for a preferred representation and at least one alternative representation of a given segment of said multimedia content; &#x2014;a matching module () configured to determine if at least one ongoing representation of said given segment, already requested by the cache from a server for a further client terminal, matches the preferred representation or an alternative representation of the first request.

Method for operating a cache arranged along a transmission path between client terminals and at least one server, and corresponding cache

The invention concerns the exchange of parameters between communication devices of a network describing their respective data sessions and the application, at a communication device, of a bandwidth distribution algorithm using the exchange parameters to allocate bandwidth to one or more data sessions in the network.

Distribution of bandwidth in a network

First type cache adapted to be arranged between a client terminal and at least one server, which:

A method for selecting a tile amongst a set of tiles associated with a multimedia content divided into a plurality of tile segments requested by a terminal is described. The multimedia content that is divided into a plurality of tile segments, includes obtaining a next position of a viewport of the terminal at the expiration of a current tile segment based on an estimation of a trajectory of the viewport; identifying one or several tiles amongst the set of tiles comprising at least the viewport at the next position; determining at least one processing parameter depending on at least the center of the identified tile and the next position of the viewport; and selecting an identified tile for which the determined processing parameter meets a selection criterion.

Method and terminal for tile selection amongst a set of tiles

The invention concerns a device for reserving bandwidth for an adaptive streaming client belonging to at least one network and configured for receiving a streaming content from at least one server, the streaming content being available at more than one data rate at the server. The device includes a stream identifier configured for detecting at least one streaming content requested by the client, a bandwidth manager configured for temporarily reserving for the client, when at least one event occurs, a transient bandwidth depending on the predetermined target data rate associated with the requested streaming content and a transient margin.

Method and device for reserving bandwidth for an adaptive streaming client

A cache arranged between client terminals and at least one server, said cache being configured to receive, from client terminals, requests for at least a first representation of a segment of a multimedia content available in a plurality of representations, comprising: 

According to the invention, the method for establishing a multipath connection across multiple communication paths between a first and a second multi-homed equipments within a least one communication network, both equipments being able to support a multipath protocol, wherein said method comprises the successive steps of:

Method and multi-homed equipment for establishing a multipath connection

A method for evaluating connectivity in an hybrid network is disclosed. The hybrid network comprising n wireless access points, the method comprises a step of elaborating an indirect connectivity matrix having a dimension equal to n&#xd7;n, wherein an element being located at row i and line j of the indirect connectivity matrix corresponds to a direct or an indirect path between a first access point i and a second access point j, A signal sent from a first access point i to a second access point j on an indirect path is successively: received and re-sent by at least a third access point k. The matrix being remarkable in that the level of received signals between each access point is greater than a second level. The method further comprises a step of elaborating a direct connectivity matrix having a dimension equal to n&#xd7;n, wherein an element being located at row i and line j of the direct connectivity matrix corresponds to a direct path between a first access point i and a second access point j wherein the level of received signal is greater than a first level. A station configured for evaluating connectivity in an hybrid network is further disclosed.

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Chartres de Bretagne, France

Charline Taibi