Abstract: A method for filtering a sound signal acquired by a voice recognition system is proposed wherein the filter used to delete the unwanted sound signal is based on a noise model created from a history of preceding acquisitions of the sound signal. The method is based on the history for predicting the characteristics of the signal in the course of acquisition and relies on this prediction to establish the noise model used by the filtering function.

Abstract: Method of recording a multimedia content broadcast streamwise, comprising the following steps: initialize a current throughput of recording of the stream in a mass memory; acquire a current portion of the multimedia content at the current recording throughput, and store it temporarily in the buffer memory; evaluate a rate of fill of the buffer memory; if the fill rate is greater than a predetermined high threshold of fill, decrease the current recording throughput; if the fill rate is less than or equal to a predetermined low threshold, increase the current recording throughput.

Abstract: Electrical equipment includes a housing having a hole formed therein; a microphone positioned inside the housing and in the proximity of the hole; a loudspeaker; emitter means arranged to emit an emitted detection sound signal via the loudspeaker; and processor means arranged to acquire a received detection sound signal via the microphone, to detect in real time from the received detection sound signal whether a user's finger is or is not positioned on or in the immediate proximity of the hole, and if a finger is positioned on or in the immediate proximity of the hole to cause a predetermined action to be performed.

Abstract: A decoder equipment includes a first output suitable for connecting to audio playback equipment; a second output suitable for connecting to video playback equipment; a communication interface arranged in service to receive both an incoming audio/video stream and also incoming metadata; processor means arranged: to process the incoming audio/video stream in order to supply an audio signal at least to the audio playback equipment and a video signal to the video playback equipment; to extract from the incoming metadata information about the incoming audio/video stream and consequently to generate an order for the audio playback equipment, the order specifying an audio profile that is to be applied as a function of said information.

Abstract: A measurement method for measuring video latency induced by a piece of video playback equipment that is connected to a piece of decoder equipment having a photosensitive sensor incorporated therein, the method including the steps of: causing a screen of the video playback equipment to generate emitted light test signals; using the photosensitive sensor to acquire captured light signals including received light test signals resulting from the emitted light test signals being reflected on at least one surface of surroundings of the video playback equipment; acquiring measurement signals produced by the photosensitive sensor from the captured light signals, and analyzing the measurement signals in order to obtain a video latency measurement.

Abstract: In order to reduce the large volume of data transmitted over a network, immersive videos are frequently represented by a multiple versions, each version being optimised in terms of quality for a point of view on the immersive video, the immersive video parts not representing the point of view for which the version was optimised being of lower quality. In this context, when a user using suitable viewing equipment views the immersive video, he must change version whenever he changes point of view. Each version is generally stored on a server relatively distant from the viewing equipment, which may give rise to latencies in the reception of a new version following a change of point of view. This latency time is reduced by allowing a node in the intermediate network between the server and the viewing equipment to transmit each version to the equipment in place of the server.

Abstract: A method for securing a recording of multimedia content in a storage medium of a first electronic device, the method including an encryption operation which consists of: for each item of multimedia content to be encrypted, generating a random key within the first electronic device; encrypting the multimedia content by the random key in order to obtain encrypted multimedia content; encrypting, by a user key, the random key so as to obtain a first encrypted random key; encrypting the first encrypted random key by a root key specific to the first electronic device in order to obtain a second encrypted random key; and storing the second encrypted random key and the encrypted multimedia content in the storage medium.

Abstract: A method of decoding an incoming audio/video stream received by a decoder box that is connected to audio playback equipment and to video playback equipment, the method comprising the steps of evaluating an audio latency and a video latency; if the audio (or respectively video) latency is greater than the video (or resp. audio) latency, testing a first condition to ensure that the time difference (?t_a, ?t_v) between the presentation time stamp of the audio (or resp. video) samples and the reference clock signal is sufficient, and if the first condition is satisfied, acting, when decoding the audio (or resp. video), to decrease the presentation time stamp of the audio (or resp. video) samples in order to advance playback of the audio (or resp. video) samples, thereby compensating at least in part the latency difference between the audio (or resp. video) latency and the video (or resp. audio) latency.

Abstract: Method of recording a multimedia content broadcast streamwise, comprising the following steps: initialize a current throughput of recording of the stream in a mass memory; acquire a current portion of the multimedia content at the current recording throughput, and store it temporarily in the buffer memory; evaluate a rate of fill of the buffer memory; if the fill rate is greater than a predetermined high threshold of fill, decrease the current recording throughput; if the fill rate is less than or equal to a predetermined low threshold, increase the current recording throughput.

Abstract: In order to reduce the large volume of data transmitted over a network, immersive videos are frequently represented by a multiple versions, each version being optimised in terms of quality for a point of view on the immersive video, the immersive video parts not representing the point of view for which the version was optimised being of lower quality. In this context, when a user using suitable viewing equipment views the immersive video, he must change version whenever he changes point of view. Each version is generally stored on a server relatively distant from the viewing equipment, which may give rise to latencies in the reception of a new version following a change of point of view. This latency time is reduced by allowing a node in the intermediate network between the server and the viewing equipment to transmit each version to the equipment in place of the server.

Abstract: A method for changing service within a digital television decoder, the digital decoder including a plurality of tuners, each tuner being capable of receiving a stream of signals including data relating to television services, the method including configuring each tuner for receiving a particular service; restoring, on a screen, a first service corresponding to the service for the reception of which a first tuner has been configured; receiving, via the decoder, a first change of service command with a view to displaying a second service for the reception of which a second tuner has been configured; receiving, via the decoder, a second change of service command with a view to displaying a third service for the reception of which a third tuner has been configured; applying a forced delay before displaying the second service and/or the third service.

Abstract: A method for filtering a sound signal acquired by a voice recognition system is proposed wherein the filter used to delete the unwanted sound signal is based on a noise model created from a history of preceding acquisitions of the sound signal. The method is based on the history for predicting the characteristics of the signal in the course of acquisition and relies on this prediction to establish the noise model used by the filtering function.

Abstract: A method for transmitting an immersive video between a network unit and an item of viewing equipment enables users to simultaneously view the immersive video which has a series of sets of images each composed of blocks of pixels. The immersive video is transmitted in a compressed form to each item of viewing equipment. For each set of images: information is obtained representing a point of view on the immersive video of each user; at least one privileged zone is determined corresponding to at least some of the points of view; for each image included in the set of images, a higher compression rate on average than a mean of the compression rates applied to the blocks of pixels belonging to a privileged zone is applied to the blocks of pixels not belonging to a privileged zone; and the set of images is transmitted to each item of viewing equipment.

Abstract: An equipment can function according to a plurality of operating modes that include a deep standby mode in which the energy consumption is minimum, an active mode in which the energy consumption is maximum and a light standby mode in which the energy consumption is intermediate between deep standby and active mode, a change from the deep standby mode to the active mode being slower than a change from the light standby mode to the active mode. The method enables an electricity meter supervising an electricity network to which an item of equipment is connected to control the change of said equipment to light standby mode. To do this, the meter implements a procedure for the detection of human presence based on an analysis of the electrical consumption in the electricity network and activates the light standby mode of the equipment when a user is detected.

Abstract: A method for securing a recording of multimedia content in a storage medium of a first electronic device, the method including an encryption operation which consists of: for each item of multimedia content to be encrypted, generating a random key within the first electronic device; encrypting the multimedia content by the random key in order to obtain encrypted multimedia content; encrypting, by a user key, the random key so as to obtain a first encrypted random key; encrypting the first encrypted random key by a root key specific to the first electronic device in order to obtain a second encrypted random key; and storing the second encrypted random key and the encrypted multimedia content in the storage medium.

Abstract: A control device controlling a device obtains a key that is supposed to be a public encryption key of a device recipient of data is to be transmitted in encrypted form. The control device obtains information derived from the public encryption key of the recipient device, and checks the obtained key, thanks to said information derived from the public encryption key of the recipient device. The control device authorises or prohibits the communication device from transmitting the data in encrypted form thanks to the obtained key, according to said checking.

Abstract: The composition disclosed is a pseudo-thermosetting neutralized chitosan composition, neutralized with an hydroxylated base, forming a phosphate-free transparent hydrogel at a temperature higher than 5° C. Said composition contains a homogeneously reacetylated chitosan derived from a chitosan having a deacetylation degree of 80-90%, having a molecular weight of not smaller than 200 kDa and a deacetylation degree of 30-60%, and may further contain a diol. Said composition may be used as a drug delivery system.

Abstract: The invention relates to a method for detecting blank pages among sheets of a document scanned on a multifunctional machine comprising a scanner, wherein said scanner: scans (S0) two pages of at least one sheet of a document to be scanned; carries out a basic detection (S6) of a blank page on each scanned sheet; selects (S7) each sheet not comprising at least one page detected to be blank during the detection (S6); compares (S9) the two pages of said selected sheet; and classifies (S9) a page as blank when it is similar to the other page of said sheet. The invention also relates to a multifunctional machine, the machine comprising a scanner for implementing a method according to the invention.

Abstract: The composition disclosed is a pseudo-thermosetting neutralized chitosan composition, neutralized with a hydroxylated base, forming a phosphate-free transparent hydrogel at a temperature higher than 5° C. Said composition contains a homogeneously reacetylated chitosan derived from a chitosan having a deacetylation degree of 80-90%, having a molecular weight of not smaller than 200 kDa and a deacetylation degree of 30-60%, and may further contain a diol. Said composition may be used as a drug delivery system.

Abstract: The invention relates to a method for detecting blank pages among sheets of a document scanned on a multifunctional machine comprising a scanner, wherein said scanner: scans (S0) two pages of at least one sheet of a document to be scanned; carries out a basic detection (S6) of a blank page on each scanned sheet; selects (S7) each sheet not comprising at least one page detected to be blank during the detection (S6); compares (S9) the two pages of said selected sheet; and classifies (S9) a page as blank when it is similar to the other page of said sheet. The invention also relates to a multifunctional machine, the machine comprising a scanner for implementing a method according to the invention.