Canon Kabushiki Kaisha

Nael Ouedraogo

Franck Denoual

Fabrice Le Leannec

Youenn Fablet

Benoit Vandame

Herve Ruellan

The present invention relates to the exchange of data between a server and a receiving device. The exchange method comprises receiving, at the receiving device, a push message comprising pushed data from the server; storing received pushed data in a cache memory of the receiving device, the stored data being identified as being of push type; transmitting, from the receiving device to the server, a request for data comprising information about pushed data stored in the cache memory of the receiving device; and receiving, from the server, at the receiving device, a response to said request comprising requested data.

Methods and devices for exchanging data

One embodiment concerns a method for generating a media fragment request for requesting fragments of an encoded media stream stored on a server device, the method being implemented by a client device storing a structure representative of fragments of the media stream previously received and stored on the client device. The structure includes first and second types of addressing information associated with fragments already received. The method for generating a media fragment request includes forming a media fragment request to obtain missing media data corresponding to a new fragment of the media stream, the media fragment request specifying at least one piece of addressing information of the first type and at least one addressing information of the second type, wherein the first type of addressing information is spatial or temporal information and wherein the second type of addressing information is byte position information within the media stream.

Method and device for generating media fragment requests for requesting fragments of an encoded media stream

A method and device for extracting, from a metadata component associated with a media resource, a metadata fragment associated with a given media fragment of the media resource, the method comprising and the device comprising means for obtaining at least one search expression, for finding the metadata fragment in the metadata component, based on the type of extraction parameters related to a request for obtaining the media fragment from the media resource and the structure of metadata component; parameterization of the or each obtained search expression with values based on values of the extraction parameters and extracting from the metadata component the metadata fragment using the or each parameterized search expression.

Method and device for extracting a meta data fragment from a metadata component associated with multimedia data

The invention concerns a method of concealing errors in at least one part of a current image (i) a sequence of images (), characterized in that it comprises the following steps:

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Maure de Bretagne, France

Nael Ouedraogo