Thomson Licensing

Thomson Licensing Dtv

Fabio Picconi

Christophe Diot

Matteo Varvello

Wenjie Jiang

Laurent Massoulie

Efstratios Ioannidis

A content distribution network, including: a content server that stores a set of content items; a plurality of gateways for storing and serving content requests to a subset of the content items, the plurality of gateways being grouped into a plurality of classes of gateways; and a plurality of class trackers corresponding to the plurality of classes; wherein each class tracker manages a placement of content items and an assignment of content requests for its class of gateways; wherein the plurality of class trackers exchange congestion signals among themselves; wherein, for each content item, each class tracker determines a fraction of gateways in its class of gateways that store the content item and a rate of content requests that are forwarded to the content server or other class trackers, based on requests for the content item entering its class and the congestion signals received from other class trackers.

Method and apparatus for transferring content among large clusters of storage devices to achieve a target replication distribution

A solution for peer-assisted distribution of video content over a broadband network is disclosed. A video file is segmented into segments and segmentation metadata is generated. The segments are converted to media stream segments with counter/timestamp consistency. The video file and the segmentation metadata are injected into a peer-assisted video delivery system. The segmentation metadata are then used for initializing download of offsets of the video file that are required for generating segments of the video file at a client.

Peer-assisted video distribution

A method is intended for verifying storage of contents into communication equipments connected to at least one communication network. This method consists, when a first communication equipment stores a content and wants to verify that this content is still stored into a second communication equipment: i) in transmitting a first request, comprising at least an identifier of this content and first data representative of this content and requiring verification of the storage of this content into the second communication equipment, to an auxiliary communication equipment acting as an interface between the communication network and the second communication equipment, ii) in transmitting a second request, comprising at least the content identifier, to the second communication equipment, to require transmission of second data representative of the content to the auxiliary communication equipment, and in triggering a timeout having a chosen duration, and iii) if the auxiliary communication equipment has received the second data before expiration of this timeout, in comparing these received second data, possibly after having processed them, to the received first data, and in transmitting a message representative of the result of this comparison to the first communication equipment.

Growing community of inventors

Paris, France

Fabio Picconi