Thomson Licensing

Interdigital Ce Patent Holdings, Sas

Interdigital Madison Patent Holdings, Sas

Thomson Licensing Dtv

Thomson Licensing S.a.

Interdigital Ce Patent Holdings

Interdigital Madison Patent Holdings

Jean-Ronan Vigouroux

Louis Chevallier

Sylvain Thiebaud

Lionel Oisel

Jean-Jacques Sacre

Joel Sirot

Izabela Grasland

Didier Doyen

Pascal Bourdon

Nour-Eddine Tazine

Jonathan Kervec

Bertrand Chupeau

Patrick Fontaine

Nicolas Le Scouarnec

Patrick Morvan

Olivier Heen

Pascal Benoit

Jean-Baptiste Henry

Hassane Guermoud

Jürgen Stauder

Christoph Neumann

Frederic Lefebvre

Valerie Allie

Philippe Schmouker

Alexey Ozerov

Erwan Le Merrer

Michel Cosmao

Robert Forthofer

Nour-Eddine Tazime

Joël Sirot

Device comprising: By the modulation of chrominance which is added to the modulation of luminance for the backlighting elements of the rear panel, the device according to the invention makes it possible to display the images with even more contrast and better quality. A specific control mode makes it possible to avoid the colour 'interferences'.

Device for displaying images comprising two modulation stages

An access point receives from a client a first nonce and a first cryptographic hash for the first nonce, the first cryptographic hash calculated using a first key derived from a second key, the second key input on the client or derived from a passphrase input on the client, derives first keys from each of a stored primary input and at least one stored secondary input valid at the deriving, the stored primary input and the at least one stored secondary input each being one of a second key and a passphrase, verifies the cryptographic hash using each derived first key to find a derived first key that checks the first cryptographic hash, generates a third key and a second cryptographic hash using the derived first key that checks the first cryptographic hash, and sends the third key and the second cryptographic hash to the client.

Devices and methods for client device authentication

A device and a method for authorizing access to a service on a first device upon detection of a second device located in near proximity, while preferably using broadcast transmission, is disclosed. The second device broadcasts on a second broadcast network a message comprising at least a group identifier common to the set of devices that can access the service and a time reference value corresponding to the emission time of the message, according to a common time reference received by all devices from a first broadcast network. The first device authorizes access to the service only if the group identifier received from the message is the same as the group identifier of the device and if the delay between the measured arrival of the message and its emission time is lower than a threshold.

Apparatus and method for autorizing access to a service according to device proximity

A particular implementation determines parameters of a generative probabilistic model from visual descriptors extracted from at least one image. The extracted visual descriptors are quantized and encoded using the model-based arithmetic encoding to be stored or for transmission to a decoder. The model parameters are also stored to be available to a decoder, or transmitted directly to a decoder. A decoder uses the stored, or received, model parameters to reconstruct the generative probabilistic model and then to decode the visual descriptors. The visual descriptors are used for image analysis tasks, such as image retrieval or object detection. A particular implementation uses a Gaussian mixture model as a generative probabilistic model.

Methods and apparatus for model-based visual descriptors compression

The invention relates to a method for bounding an object in a video sequence F. The method includes obtaining a subset of pixels located in the object to annotate, in each frame of the video sequence. Spatio-temporal slicing is performed on the video sequence F, centered on the obtained subsets of pixels, resulting in a first image Fobtained by an horizontal concatenation of first slices, comprising the obtained subsets of pixels, and resulting in a second image Fobtained by a vertical concatenation of second slices. A trajectory of the obtained subsets of pixels is displayed on both the first Fand second Fimage. A bounding form around the object to annotate is obtained out of four points in each frame of the video sequence, wherein the coordinates of the four points of a frame t are obtained from the coordinates of the points located in the first and second boundary of the first and second image for that frame t.

Method and device for bounding an object in a video

The present invention relates to a method for navigating over documents represented by identifiers displayed on a navigation menu. Each document is associated with a plurality of numerical values characterizing it according to a plurality of criteria. Each identifier of a document is placed at a position dependent on a part of the parameter values associated with this document. The whole set of the documents is subdivided into a given number of regions. The sums of the values associated with all the documents of a region and corresponding to a certain number of criteria are virtually equal for each region. The outer contour of the regions is displayed so as to enable its selection. The selection of a region triggers the display in full screen mode of all of the identifiers of the selected region. The invention also relates to a display device capable of executing the navigation method.

Method for navigating identifiers placed in areas and receiver implementing the method

The invention relates to a method for determining identifiers associated with segments of a document. Each segment consists of a series of individual elements such as images or sound sequences. Each segment of the document is subdivided into a determined number of portions comprising the same number of individual elements. An individual element is extracted from the most central portion of each segment and associated with the segment as identifier. The invention also relates to the receiver capable of implementing the method.

Method for determining identifiers of segments forming an audiovisual document and receiver implementing the method

A method for retrieving a media file from a media rendering device with an initial set of media files stored in the device. Each media file has attributed feature values stored in the device and is associated to a graphical element displayed on a display. The position of each graphical element on the display depends on a multitude of the feature values of the associated media file.

Method and apparatus for retrieving a media file of interest

The invention describes a creation method of a summary of an audiovisual document respecting both the criteria defined by the user and criteria helping in the understanding of said summary. The document is first split into sequences, each sequence associated with attribute values and a dependence parameter. The user first selects the first sequences either manually, or according to attribute values. Then second sequences are added according to the value of the dependence parameters. These added sequences enable a better understanding of the summary thus created. According to an improvement, the user introduces a maximum duration for the summary, first and/or second sequences are withdrawn from the summary if the duration of the summary thus created exceeds the introduced duration. The invention also relates to an audiovisual device for the creation and viewing of the summary.

Method of creating a summary of a document based on user-defined criteria, and related audio-visual device

The present invention relates to a method to create and reproduce a panoramic sound image. Initially, there is a plurality of images associated with sound sequences, these images are for example taken using a camera, this camera having recorded the ambient sound at the time of taking the photograph. The ambient sound is then filtered to keep only the stationary component. Then, the images are concatenated to form a unique image called 'panoramic', each sound sequence being associated with a part of the panoramic image containing the image associated with this sequence. Finally, the commands are introduced to display the parts of the panoramic image. The command also enables to reproduce continually the stationary component of at least a sound content associated with at least a displayed part of the panoramic image. According to an improvement, the sound sequence is reproduced continually until the introduction of a new command. The invention also relates to a reproduction device enabling the reproduction of a panoramic image and a sound sequence.

Method of creating and reproducing a panoramic sound image, and apparatus for reproducing such an image

The invention relates to a method and a device for time-shifted playback of audio/video data. The device comprises: According to the invention,

Device and method for time-shifted playback of multimedia data

A device and a process for compressing video documents. The process includes decomposition of the video document into shots, extraction of images representative of the said shots, measurement of the distances between the said representative images, grouping of the images whose distance is less than a predetermined threshold into a group of images, calculation of the relative cost of coding of each image with respect to the other images of the group of images. The process further includes calculation of a minimum spanning tree for each group of images minimizing the cost of coding of each group of images and coding of each group of images by browsing the images in the order given by the said spanning tree.

Device and method for grouping of images and spanning tree for video compression

The invention relates to a method and a device for detecting the orientation of an image in a set of images. All images in this set of images contain at least one similar object. The method proposes to choose one image in this set of images as being a reference image. The orientation of the other images is detected based on the orientation of this reference image.

Method and device for detecting the orientation of an image

The present invention relates to a method for identifying an audiovisual document. Initially, the user programs the recording in an audiovisual content device with the aim of recording a determined document. Once the recording has been performed, the device detects and displays identifiers associated with shots extracted from the recorded content, each associated shot having at least one determined characteristic. An indication of the probability associated with each shot so that said shot is indeed the shot identifying the start or the end of said document is also displayed. Then, the user introduces a selection command for a displayed identifier, the start or the end of said document being identified by the shot associated with the selected identifier. The invention also relates to a receiver featuring a user interface implementing the method.

Method for identifying a document recorded by a display, selection of key images and an associated receptor

Method to display an image using four or more primaries having different spectral distributions that are distributed into three groups of primaries, wherein, in a visual color space, all primaries belonging to the same group have the same visual color and are metamehc. Each image being got from a combination of three primary images and each primary image being associated with each visual color of a group, the different primaries of each group are spatially or sequentially distributed over the primary image associated with this group, then allowing an efficient anti-copy protection based on metamerization of images, without any supplemental video processing.

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Rennes, France

Jean-Ronan Vigouroux