Abstract: A method and device are provided for encoding at least one image broken up into blocks. The method includes, for at least one current block, transforming the current block from the spatial domain into a transformed domain, outputting a transformed block including of a set of coefficients representative of the current block, referred to as original coefficients. The method further includes selecting a subset of original coefficients from the set and, for at least one original coefficient of the subset, the following steps: estimating the original coefficient, outputting an estimated coefficient in the transformed domain; determining a residual of a coefficient by comparing the original coefficient and the estimated coefficient; and encoding the residual of a coefficient.

Abstract: Systems, methods, and stored coded instruction sets for reducing the amount of data captured, i.e., retained, by a computerized system, such as an aircraft flight control or monitoring system. Such systems can, for example, be used in monitoring and/or controlling the operation of one or more aircraft engines, flight controls, or other aircraft systems, in order to optimize storage required for collected data, and/or to reduce or otherwise control the time required to off-load captured data to another computer system, such as a land-based analysis system. The amount of data collected, e.g., captured or retained in memory, may be reduced by discarding data points that are within a specified tolerance of, for example, a previously observed or expected value in a manner which assists with preserving the accuracy and precision of the original measured data.

Abstract: The invention relates to a method for quantifying components, wherein certain components are each determined based on a plurality of audio signals and can be calculated by the application of a linear conversion on the audio signals, said method comprising: determining a quantification function to be applied to the components by testing a condition relative to an audio signal and depending on a comparison made between a psycho-acoustic masking threshold relative to the audio signal and a value determined based on the reverse linear conversion and quantification errors of the components by the function.

Abstract: A method for recovering transmission errors, comprising: receiving a data packet comprising an error detection code associated to data contained in the packet, wherein the data associated to the error detection code comprises primary data and secondary data, checking the error detection code of the received packet to detect an erroneous state of the associated data, when the erroneous state is detected, determining a finite set of candidate values for the primary data and, for each values of the set: determining a marginal likelihood of the candidate value as a function of the error detection code of the received packet, determining a first correlation between the primary data of the received packet and the candidate value, and selecting a corrected value for the primary data among the set of candidate values as a function of said marginal likelihoods and said first correlations.

Abstract: A method for recovering transmission errors, comprising: receiving a data packet comprising an error detection code associated to data contained in the packet, wherein the data associated to the error detection code comprises primary data and secondary data, checking the error detection code of the received packet to detect an erroneous state of the associated data, when the erroneous state is detected, determining a finite set of candidate values for the primary data and, for each values of the set: determining a marginal likelihood of the candidate value as a function of the error detection code of the received packet, determining a first correlation between the primary data of the received packet and the candidate value, and selecting a corrected value for the primary data among the set of candidate values as a function of said marginal likelihoods and said first correlations.

Abstract: A method and device are provided for encoding at least one image broken up into blocks. The method includes, for at least one current block, transforming the current block from the spatial domain into a transformed domain, outputting a transformed block including of a set of coefficients representative of the current block, referred to as original coefficients. The method further includes selecting a subset of original coefficients from the set and, for at least one original coefficient of the subset, the following steps: estimating the original coefficient, outputting an estimated coefficient in the transformed domain; determining a residual of a coefficient by comparing the original coefficient and the estimated coefficient; and encoding the residual of a coefficient.

Abstract: The present invention relates to a transmitting and a receiving methods of a modulated data stream (MOD). It is characterized in that at the transmitting side, it comprises the steps of: Generating a mixed data stream (MD) on the basis of mixing a first data stream (HP) with a second data stream (LP); Encoding said first data stream (HP) and said mixed data stream (MD); Generating a modulated data stream (MOD) on the basis of mapping said mixed data stream (MD). At the receiving side, it comprises the steps of: Generating a demapped data stream on the basis of demapping said modulated data stream (MOD); Generating a first and a second deinterleaved data streams on the basis of deinterleaving said demapped data stream; Decoding said first deinterleaved data stream; Generating an a priori information on the basis of mixing a part of the first decoded deinterleaved data stream with a mixing vector; and Decoding said second deinterleaved data stream using said a priori information.

Abstract: Systems, methods, and stored coded instruction sets for reducing the amount of data captured, i.e., retained, by a computerized system, such as an aircraft flight control or monitoring system. Such systems can, for example, be used in monitoring and/or controlling the operation of one or more aircraft engines, flight controls, or other aircraft systems, in order to optimize storage required for collected data, and/or to reduce or otherwise control the time required to off-load captured data to another computer system, such as a land-based analysis system. The amount of data collected, e.g., captured or retained in memory, may be reduced by discarding data points that are within a specified tolerance of, for example, a previously observed or expected value in a manner which assists with preserving the accuracy and precision of the original measured data.

Abstract: A method for recovering transmission errors, comprising: receiving a data packet (50) comprising an error detection code (51) associated to data contained in the packet, wherein the data associated to the error detection code comprises primary data (52) and secondary data (53), checking the error detection code of the received packet to detect an erroneous state of the associated data, when the erroneous state is detected, (86) determining a finite set of candidate values for the primary data and, for each candidate values of the set: determining a marginal likelihood of the candidate value as a function of the error detection code of the received packet, determining a first correlation between the primary data of the received packet and the candidate value, and selecting a corrected value for the primary data among the set of candidate values as a function of said marginal likelihoods and said first correlations.

Abstract: A permeable protocol layer decoder (10) for decoding a protocol data unit comprises an error detection code checking means (2) for checking an error detection code of the protocol data unit to detect an erroneous state of the control data, and a control data correction means (6) operable to determine a finite set of candidate values for the control data, to determine error detection code values associated to the candidate values of the set, to determine first correlations between the control data of the received protocol data unit and the respective candidate values, to determine second correlations between the error detection code of the received protocol data unit and error detection code values associated to the respective candidate values, and to select a corrected value of the control data among the set of candidate values as a function of said first and second correlations.

Abstract: The invention relates to a method for quantifying components, wherein certain components are each determined based on a plurality of audio signals and can be calculated by the application of a linear conversion on the audio signals, said method comprising: determining a quantification function to be applied to the components by testing a condition relative to an audio signal and depending on a comparison made between a psycho-acoustic masking threshold relative to the audio signal and a value determined based on the reverse linear conversion and quantification errors of the components by the function.

Abstract: A method of channel estimation in a wireless orthogonal frequency division multiplexed (OFDM) communication system is disclosed. The method comprises receiving a signal in the time domain and applying a Fourier transform to the received signal to obtain a frequency domain signal including a plurality of sub-carriers. Then, the method requires estimating probabilities of coded bits for the plurality of frequency domain sub-carriers and performing channel coefficient estimation for the plurality of frequency domain sub-carriers using channel coefficient estimates for another of the plurality of frequency domain sub-carriers.

Abstract: The invention relates to compounds which constitute a class of medicaments which have an anti-inflammatory activity and which act by inhibiting leukotriene A4 (LTA4), and enzyme which is responsible for the biosynthesis of leukotriene LTB4, a major proinflammatory mediator. The invention also relates to therapeutic anti-inflammatory, applications of these compounds as well as for methods of preparing these compounds.

Abstract: The watermarking system uses a first series of parameters, the private key, for the insertion of the watermark, and a second series of parameters, the public key, for the detection of the watermark, so that knowledge of the public key does not make it possible to know the private key and does not make it possible to delete or modify the watermark. The insertion of the watermark is performed by adding a pseudo random noise sequence, filtered by a filter with impulse response, to the data to be watermarked. The detection of the watermark is performed by searching through the data received for whether they contain noise which has been filtered by a filter with predefined spectral response. Application to copy protection.

Abstract: A receiver (103) for receiving an Ultra Wide Band (UWB) signal comprises a receiver front end (105) coupled to symbol point correlators (107). The symbol point correlators (107) comprise a first plurality of correlators which generates correlated signal values around a first symbol decision point of a first symbol by correlating the received UWB signal with a local replica. The first plurality of correlators are time offset with respect to each other to generate first time offset correlated signal values. The time offsets are typically significantly less than the timing jitter of transmit and receive oscillators. The symbol point correlators (107) are coupled to a joint estimator (109) which determines a symbol value of the first symbol in response to the first time offset correlated signal values by joint detection of the symbol value and a time offset of the UWB signal. The invention may effectively reduce time jitter noise to a value determined by the relative time offset between the correlators.

Abstract: The present invention relates to a method for decoding Variable Length Codes used to encode data having a predefined type, preferably image or video data, said encoded data consisting in a sequence of codewords belonging to a predefined set of codewords. According to the present invention, the method comprises the steps of: building at least one partial decoded codeword sequence comprising at least two decoded codewords; checking if said partial decoded codeword sequence fulfils at least one property intrinsic to said predefined type of data.

Abstract: The invention concerns compounds inhibiting LTA4 hydrolase of formula (I). The invention also concerns their therapeutic, in particular anti-inflammatory, applications.

Abstract: The present invention relates to a method for transmitting data having a predefined type, preferably image or video data, encoded using Variable Length Codes, the encoded data consisting in a sequence of codewords belonging to a predefined set of codewords. According to the present invention, the method comprises the steps of checking if a sequence of possible VLC codewords sequences meets at least a predefined constraints related to a property intrinsic to the type of the data; determining the number L of bits required to encode all valid codeword sequences contained in said predefined set of codewords; associating each valid codeword sequence with one L-bit word using an encoding method providing a maximum distance between valid VLC codeword sequences; and transmitting a flow of L-bit words representing said encoded data.

Abstract: The invention relates to compounds which constitute a class of medicaments which have an anti-inflammatory activity and which act by inhibiting leukotriene A4 (LTA4), and enzyme which is responsible for the biosynthesis of leukotriene LTB4, a major proinflammatory mediator. The invention also relates to therapeutic anti-inflammatory, applications of these compounds as well as for methods of preparing these compounds.

Abstract: The instant invention relates to a process for preparing a compound of formula (I): said process comprising a step (B) which consists in performing a Michael addition of a thioacid RS4H on to an &agr;-substituted acrylamide derivative.