公开(公告)号：US20240267542A1

公开(公告)日：2024-08-08

申请号：US18570513

申请日：2022-06-09

Applicant: FONDATION B-COM

Inventor： Félix HENRY ,  Gordon CLARE

IPC: H04N19/189 ,  H04N19/90

CPC classification number: H04N19/189 ,  H04N19/90

Abstract: A part of a data stream includes a plurality of data units respectively associated with a plurality of images and together presenting different images of the plurality of images. The data stream part further includes differential encoding data differentially encoding an artificial neural decoding network relatively to a reference artificial neural decoding network. A method for decoding this data stream part includes the following steps: determining the artificial neural decoding network by decoding the differential coding data; and decoding at least one data unit of the plurality of data units by the determined artificial neural decoding network. Another decoding method, decoding devices, a computer program and associated data streams are also described.

公开(公告)号：US20240187327A1

公开(公告)日：2024-06-06

申请号：US18556452

申请日：2022-04-14

Applicant: FONDATION B-COM

Inventor： Michel TREFCON ,  Philippe BERTIN

IPC: H04L43/103 ,  H04L43/0817

CPC classification number: H04L43/103 ,  H04L43/0817

Abstract: A management module (NRF), management method, and an associated computer network and computer program configured to manage at least one functional process (NF1; NF2; NF3; NF4) of a computer network (CN) are designed to check the arrival of a heartbeat message from the functional process within a time window of a duration stored by the management module (NRF). The management module (NRF) is designed to determine the duration.

公开(公告)号：US11985018B2

公开(公告)日：2024-05-14

申请号：US17797902

申请日：2021-02-02

Applicant: FONDATION B-COM

Inventor： Luc Le Magoarou ,  Stéphane Paquelet

IPC: H04L27/26 ,  H04L25/02

CPC classification number: H04L27/2613 ,  H04L25/0226

Abstract: A pilot sequence includes pilot vectors to be transmitted in a communication channel. A method of determining the pilot sequence comprises determining an orthogonal basis of a real vector space that is an image of a matrix having, respectively as columns, the partial derivatives of the model vector with respect to the different real parameters; and constructing the pilot vectors using the determined orthogonal basis, by grouping the orthogonal vectors of the orthogonal basis in at least one pair and by producing, for each of the at least one pair comprising a first vector and a second vector, a pilot vector by summation of the first vector and a product of the second vector by an imaginary number.

公开(公告)号：US20240045376A1

公开(公告)日：2024-02-08

申请号：US18259059

申请日：2021-12-22

Applicant: FONDATION B-COM

Inventor： Anas EL RHAMMAD

IPC: G03H1/08

CPC classification number: G03H1/0808

Abstract: A method for transmitting data representing a digital hologram includes: —determining raw values of a group of parameters, the raw values being determined so that a first scalar product between the hologram and a first decomposition wavelet characterized by the raw values is the maximum; —computing, for each parameter of the group, a refinement value as a function of a derivation scalar product determined on the basis of a scalar product between the hologram and a derivative of the first wavelet relative to the parameter; —determining a coefficient on the basis of a second scalar product between the hologram and a second decomposition wavelet characterized by the refinement values; and —transmitting: i) data representing the refinement values; and ii) of the coefficient.

公开(公告)号：US20230057413A1

公开(公告)日：2023-02-23

申请号：US17797902

申请日：2021-02-02

Applicant: FONDATION B-COM

Inventor： Luc LE MAGOAROU ,  Stéphane PAQUELET

IPC: H04L27/26 ,  H04L25/02

Abstract: A method of determining a pilot sequence comprising a plurality of pilot vectors to be transmitted in a communication channel modeled by a model vector including a complex-valued function variable as a function of real parameters and descriptive of a transmission from a transmission to a reception antenna through the communication channel, includes: determining an orthogonal basis of a real vector space that is the image of a matrix having respectively as columns the partial derivatives of the model vector with respect to the different real parameters; constructing the pilot vectors using the determined orthogonal basis, by grouping the orthogonal vectors of the orthogonal base in pairs and by producing, for each pair including first and second vectors, a pilot vector by summing the first vector and the product of the second vector by an imaginary number. A pilot sequence determining device and program are also disclosed.

公开(公告)号：US20220417541A1

公开(公告)日：2022-12-29

申请号：US17848665

申请日：2022-06-24

Applicant: FONDATION B-COM

Inventor： Charles BONNINEAU ,  Wassim HAMIDOUCHE ,  Jean-Yves AUBIE

IPC: H04N19/30 ,  H04N19/132 ,  H04N19/13 ,  H04N19/42 ,  H04N19/186

Abstract: A method for decoding an image based on a base layer and enhancement information includes decoding the base layer in order to obtain at least one base component, oversampling the at least one base component in order to obtain at least one oversampled component, decoding the enhancement information by a part at least of artificial neural network in order to obtain enhancement values, and reconstructing the image based on the at least one oversampled component and the enhancement values. An associated encoding method, electronic decoding device, and electronic encoding device are provided.

公开(公告)号：US20220113673A1

公开(公告)日：2022-04-14

申请号：US17427041

申请日：2020-01-29

Applicant: FONDATION B-COM

Inventor： Anas EL RHAMMAD ,  Antonin GILLES ,  Patrick GIOIA ,  Marco CAGNAZZO

IPC: G03H1/08

Abstract: A method for transmitting data representative of a digital hologram represented by a set of atoms each having a diffraction spectrum in a plane of observation includes the following steps: determining an order for sets each including at least one atom, as a function of a distance, in the plane of observation, between a position of observation and a position associated to the involved set; and transmitting, for a part at least of the sets and in the determined order, descriptive data of the at least one atom included in the involved set. An associated transmission device is also described.

公开(公告)号：US20210392320A1

公开(公告)日：2021-12-16

申请号：US17291813

申请日：2019-11-06

Applicant: FONDATION B-COM

Inventor： Félix Henry ,  Gordon Clare ,  Pierrick Philippe

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/119 ,  H04N19/167 ,  H04N19/593 ,  H04N19/159

Abstract: A method for encoding or decoding at least one image, an image being split into blocks of elements. The method includes, for at least one block: splitting the block into at least two areas; and processing at least one of the areas. The processing includes scanning the elements of the area according to a predetermined scanning order, and for at least one scanned element, called a current element: selecting at least one predictor element previously encoded or decoded according to a prediction function; and predicting the current element: from the at least one predictor element, if the at least one predictor element belongs to the area; or from at least one replacement value, otherwise.

公开(公告)号：US11134080B2

公开(公告)日：2021-09-28

申请号：US16466485

申请日：2017-10-19

Applicant: FONDATION B-COM

Inventor： Gaetan Le Guelvouit ,  Alexandre Garel

IPC: H04L29/06 ,  G06F21/31 ,  G06F21/44

Abstract: A method for authenticating a user of a terminal equipment connected to a communication network, for access from this terminal equipment to a remote service hosted by a server equipment connected to the network. The method includes the following steps, implemented by the server: authenticating the user from credentials; in the event of successful user authentication, authenticating the client equipment from credentials stored in a first memory of the server in association with the user's credentials, including a command to render a first pattern, the command including parameters describing the first pattern and rendering the first pattern received from the client equipment, so-called reference pattern; deciding on authenticating the client equipment according to the evaluated score, a successful authentication being decided when the match score is greater than a predetermined threshold; and following the authentication decision, updating the credentials of the terminal equipment.

公开(公告)号：US11067952B2

公开(公告)日：2021-07-20

申请号：US16627408

申请日：2018-06-13

Applicant: FONDATION B-COM

Inventor： Antonin Gilles ,  Patrick Gioia

IPC: G03H1/08 ,  G03H1/22 ,  G06T5/00 ,  G06T15/20

Abstract: Disclosed is a method for digitally generating a hologram in a screen plane of a hologram display device, including: obtaining intensity and depth maps of the scene corresponding to user viewpoint; projecting the points of the intensity map on planes parallel to the screen plane in a reference frame of the screen, one plane associated with one depth value of between minimum and maximum values of the depth map, a point of the intensity map projected on the plane of the planes associated with the depth value of the point in the depth map; compensating for distortion by modifying the planes of the scene, a point of one plane, called image point of an object point by conjugation of the convergent lens, being replaced by the object point; from the modified planes, propagating a complex sampled light wave to the screen plane and summation of the propagated light waves.