Canon Kabushiki Kaisha

Canon Europa N.v.

Canon Research Centre France S.a.

Lionel Tocze

Alain Caillerie

Isabelle Morvan

Yacine El Kolli

Hervé Ruellan

Julien Sevin

Pascal Lagrange

Patrice Nezou

Romain Guignard

Laurent Frouin

Pierre Visa

Tristan Halna Du Fretay

Brice Le Houerou

Frédéric Maze

Franck Denoual

Naël Ouedraogo

Eric Nassor

Jean-Jacques Moreau

Julien Sevin-Renault

A communication method for an Intelligent Transport System (ITS) comprising at least one first transmitting ITS station, the method taking place at the first transmitting ITS station including transmitting a second Collective Perception Message (CPM) comprising at least one identifier of a first element previously transmitted in a first CPM, the first element being not present in the second CPM.

Enhanced reporting in CPM based on layered cost map

The present invention regards Cooperative Intelligent Transportation Systems, C-ITS. In response to detecting at least one situation involving at least one object detected within an area monitored by the ITS, a Collective Perception Message, CPM, is generated and transmitted. The CPM comprises a reference to the at least one object and an indication to indicate that the at least one object is involved in the at least one situation.

Communication within an intelligent transport system

The present invention concerns a method of encapsulating subpicture bitstreams in at least one media file, the subpicture bitstreams corresponding to encoded media data of a subpicture corresponding to a rectangular region of video data, the method comprising: obtaining the plurality of subpicture bitstreams; encapsulating each subpicture bitstream in a subpicture track; generating at least one base track referencing at least two subpicture tracks and forming a spatial arrangement of the at least two subpicture tracks; generating information describing APS referenced by samples of the at least two subpicture tracks; encapsulating the subpicture tracks, the at least one base track and the information describing APS in the at least one media file.

Method and apparatus for encapsulating encoded media data in a media file

The present invention relates to a method for generating control signals for an image capture device, the method being performed in a communication device comprising a first slave time generator and a second slave time generator, the communication device being connected to a first remote time server and a second remote time server, the method comprising:

Method for generating control signals for an image capture device

A method of synchronization of a communication device comprising a first and second communication ports, each of the first and second communication port being associated with a respective first and second time system, the method comprising a regular master synchronization process synchronizing regularly the first time system with an external synchronization server according to a time synchronization protocol; a regular slave synchronization process synchronizing regularly the second time system with the first-time system; detecting a loss of synchronization between the first and second time system; determining which of the first and second time system is desynchronized; and synchronizing the desynchronized time system with the other one.

Method and apparatus for synchronizing different communication ports

The present invention relates to improving configuration of wireless communication paths between devices in a video projection system comprising multiple wireless video projectors. When an initial radio communication setup is required between a managing node, e.g. a node comprising a master projector, and a node comprising a slave projector, for example following the powering up of the video projection system, the slave node receives setup information by radio communication means according to a sweeping sequence and transmits information by projecting sub-images. Sub-images advantageously comprise information relative to settings of the master node allowing reception in the corresponding slave node of a radio signal transmitted by the master node.

Method and device for improving configuration of communication devices in a video projection system comprising multiple wireless video projectors

A method of transmitting a video frame over a plurality of communication channels involves selecting a number of communication channels available between the transmitting and the receiving devices; partitioning spatially correlated pixels of the video frame into a number of different partitions equal to the number of selected communication channels; and transmitting the different partitions, where each partition is transmitted on a distinct communication channel among the selected communication channels. Such a method is suitable for use in a communication system, especially a wireless communication system, in which data of a channel can be lost or corrupted. The method can maximize diversity in the transport of the video frame pixels and improve robustness.

Communication of video information

A method is proposed for transmitting at least two data contents by means of a source node to a destination node via at least two transmission paths. The method for transmitting includes steps of: sub-dividing each content into a succession of elementary data groups according to a predetermined pattern of repetition comprising at least two types of different elementary groups; transmitting elementary groups on at least one of the paths, according to a predefined alternation of elementary groups resulting from the sub-division of at least two different contents.

Methods for transmitting and receiving data contents, corresponding source and destination nodes and storage means

A video projector, a cluster of video projectors and a method for wirelessly transmitting image data within the cluster of video projectors. The video projector includes a first antenna located at a first side of the projector and a second antenna located at a second side of the projector, opposite to the first side. Image data is divided into sub-parts, and distributed by assigning each image data sub-part to a video projector. A video projector receiving image data sub-parts extracts and stores the image data sub-part assigned to it, and retransmits image data sub-parts assigned to respectively a second and third video projectors.

Video projector and associated data transmission

A method includes emitting a reference signal following K transmission paths during a first configuration time slot, identifying valid transmission paths among the set of K transmission paths by listening, according to each transmission path of the set, for a feedback reference signal from the second device during the second configuration time slot; and emitting data signals in each communication time slot of which the associated transmission path has been identified as valid.

Methods and devices for transmitting and receiving data signals in a wireless network over a plurality of transmission paths

A method is proposed for managing a distribution of bandwidth in a communications network by means of a slave node of the network, said network comprising a set of nodes. The slave node is such that it performs steps for:

Method for managing a distribution of bandwidth in a communications network, corresponding computer-readable storage medium and slave node

A method is proposed for managing access to a communications network clocked in transmission cycles by a master node characterized in that, during a given transmission cycle, a slave node of the network performs steps for: obtaining () an active access sequence applicable for the given transmission cycle and a piece of information on duration of relevance associated with the active access sequence obtained; carrying out () a first check that at least one packet is received by the slave node during the given transmission cycle, according to the active access sequence; in the event of a positive first check, determining () an access sequence for a following transmission cycle as a function of pieces of information contained in the received packet or packets; in the event of a negative first check, determining () an access sequence for the following transmission cycle as a function of the piece of information on duration of relevance associated with the active access sequence obtained.

Method for managing a distribution of bandwidth in a communications network, corresponding storage means and slave node

The invention pertains to a method for determining a sequence of access () to a communications network () by a plurality of nodes () of said communications network () in the context of the broadcasting  of a data content by a transmitter node () to a set of receiver  nodes (), at least one receiver node () having to receive said content by means of another receiver node (), called a relay receiver node.

Method for determining a sequence of access to a communications network, corresponding computer program product, storage means and devices

The invention relates to a method of determining the instant of consideration of a modification of at least one reception condition for signals in a communication system comprising at least two communication devices. The method comprises the steps, executed by a communication device, of detecting (E) at least one modification of the reception conditions for signals in the communication system, determining (E) the instant at which at least one other communication device will have detected the modification of the reception conditions for the signals, and establishing (E) an operating mode of the first communication device as a function of the instant determined. The invention also relates to an associated determining device.

Method of determining the instant of consideration of a modification of at least one reception condition for signals in a communication system

The communication method concerns communication stations adapted to communicate with each other when a base station supplies a synchronisation signal to mobile stations synchronising on this signal. This method includes a request operation () during which a first base station () transmits, to a mobile station (), a request for the storage in memory and transmission, by said mobile station, of a message, to a message destination communication station () which is not synchronised with said first base station.

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Saint Domineuc, France

Lionel Tocze