Abstract: Device comprising: a rear panel comprising a network of backlighting elements, a front panel comprising a network of optical valves which are each capable of modulating the brightness of a single primary colour. 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”.

Abstract: A method for detecting anomalies, the method being performed by a machine learning system configured for learning at least one model from a set of training data, the method including receiving sensor data from a plurality of N sensors, computing an anomaly prediction based on the sensor data and the at least one model, and if the anomaly prediction is an anomaly detection, sending an anomaly event containing said anomaly prediction. The method further includes receiving a user feedback relating to said anomaly event or to an absence of anomaly event, and adapting the at least one model based on the user feedback.

Abstract: 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.

Abstract: 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.

Abstract: A method and device is provided for of determining broadcast content availability. In one embodiment. The method comprises receiving a user selection for broadcast display of a program. The broadcast content includes a plurality of associated criteria. The user selection criteria is then analyzed to determine its characteristics. The method also includes continuously monitoring broadcast program dataflow to detect changes to the selected user program and updating information affecting broadcast of the selected user program upon detecting any changes.

Abstract: To determine if a device is open to the Internet, the device, storing a statistically unique identifier for the device or a group of devices including the device, sends a search request comprising the statistically unique identifier to an Internet search engine, receives a response to the search request from the Internet search engine, determines from the search response whether the statistically unique identifier was found by the Internet search engine, and in case the statistically unique identifier was found found by the Internet search engine, performs an action intended to disable access to the statistically unique identifier from the Internet via the communication interface. The device can also update statistically unique identifier in case the statistically unique identifier was found in the search response.

Abstract: A device and method for walker identification. An audio input interface obtains a sampled acoustic signal, possibly from a microphone, a vibration input interface obtains a sampled vibration signal, possibly from a geophone and at least one hardware processor fuses the sampled acoustic signal and the sampled vibration signal into a fused signal, extracts features from the fused signal and identifies a walker based on extracted features.

Abstract: 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.

Abstract: 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.

Abstract: A method and an apparatus utilize communication devices and systems and/or Internet of Things (IoT) devices and systems to track a person's user interaction events, store them, and process the individual events or the accumulated history of these events for computing and generating an indicator of the level of user isolation for the tracked individual. During the monitoring and processing of the events, when the generated indicator meets or exceeds a predetermined value, an alert can be generated to notify the individual's friends, relatives, associates, or other identified persons to initiate contact with the senior.

Abstract: A method for detecting device replacement in a network is proposed. A salient idea is to monitor the connectivity of a plurality of devices connected to a home gateway over time, to compute a set of fingerprints at least associated with a device over time, wherein a fingerprint is representative of a usage by one user or a group of user over time. In case a new device is detected connected to the home gateway, a fingerprint associated with this new device for a current period of time is compared with the fingerprints associated with other devices over a previous period of time. In case there is a fingerprint match between the fingerprint associated with the new device and a fingerprint associated with a device that did not connect to the gateway since the new device appeared, a device replacement is detected between those devices.

Abstract: 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.

Abstract: The invention relates to a method for bounding an object in a video sequence Fx,y,t. 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 Fx,y,t, centered on the obtained subsets of pixels, resulting in a first image Fy,t obtained by an horizontal concatenation of first slices, comprising the obtained subsets of pixels, and resulting in a second image Fx,t obtained by a vertical concatenation of second slices. A trajectory of the obtained subsets of pixels is displayed on both the first Fy,t and second Fx,t image. 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.

Abstract: A method for managing device replacements is disclosed. The method proposes to data mine a dataset of device transitions, wherein a device transition is an entry representing a user replacing a first device by a second device at a given point in time. This dataset is exploited so as to first predict which device, or set of devices is closed to be obsolete and needs to be replaced and then, to determine a candidate new device that is the most suited to replace the obsolete device.

Abstract: 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.

Abstract: The present disclosure relates to a method for annotating a content element of a video stream which has been at least partially received by an electronic device, said method being implemented by said electronic device during a restitution of said video stream.

Abstract: The invention relates to a method for bounding an object in a video sequence Fx,y,t. 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 Fx,y,t, centered on the obtained subsets of pixels, resulting in a first image Fy,t obtained by an horizontal concatenation of first slices, comprising the obtained subsets of pixels, and resulting in a second image Fx,t obtained by a vertical concatenation of second slices. A trajectory of the obtained subsets of pixels is displayed on both the first Fy,t and second Fx,t image. 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.

Abstract: A method and an apparatus (2) for simultaneously displaying a first video program and supervising a second video program are described. The method comprises receiving (10) a first and a second video program. A region-of-interest is identified (11) in the second video program. The first video program and information corresponding to at least a portion of the region-of-interest of the second video program are provided (12) to a display, while at least a part of the second video program is recorded (13). In response to a change of the provided information corresponding to at least a portion of the region-of-interest, at least a part of the recorded second video program is retrieved (14) and provided (15) to a display.

Abstract: 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.

Abstract: 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.