Patent application number | Description | Published |
20080196491 | INTEGRATED PRESSURE SENSOR WITH A HIGH FULL-SCALE VALUE - In an integrated pressure sensor with a high full-scale value, a monolithic body of semiconductor material has a first and a second main surface, opposite and separated by a substantially uniform distance. The monolithic body has a bulk region, having a sensitive portion next to the first main surface, upon which pressure acts. A first piezoresistive detection element is integrated in the sensitive portion and has a variable resistance as a function of the pressure. The bulk region is a solid and compact region and has a thickness substantially equal to the distance. | 08-21-2008 |
20080208425 | INTEGRATED PRESSURE SENSOR WITH DOUBLE MEASURING SCALE AND A HIGH FULL-SCALE VALUE - In a pressure sensor with double measuring scale: a monolithic body of semiconductor material has a first main surface, a bulk region and a sensitive portion upon which pressure acts; a cavity is formed in the monolithic body and is separated from the first main surface by a membrane, which is flexible and deformable as a function of the pressure, and is arranged inside the sensitive portion and is surrounded by the bulk region; a low-pressure detecting element of the piezoresistive type, sensitive to first values of pressure, is integrated in the membrane and has a variable resistance as a function of the deformation of the membrane; in addition, a high-pressure detecting element, also of a piezoresistive type, is formed in the bulk region inside the sensitive portion and has a variable resistance as a function of the pressure. The high-pressure detecting element is sensitive to second values of pressure. | 08-28-2008 |
20080223143 | PRESSURE SENSOR HAVING A HIGH FULL-SCALE VALUE WITH PACKAGE THEREOF - A pressure sensor including a pressure-sensor element having a monolithic body of semiconductor material, and a first main face and a second main face acting on which is a stress resulting from a pressure, the value of which is to be determined; and a package enclosing the pressure-sensor element. The package has an inner chamber containing liquid material, and the pressure-sensor element is arranged within the inner chamber in such a manner that the first and second main faces are both in contact with the liquid material. In particular, the liquid material is a silicone gel. | 09-18-2008 |
20090159375 | Control system for braking devices based on braking torque sensor - An embodiment of a control system of a braking device is provided. Said braking device includes at least one braking element adapted to apply a braking action to a moving body. The control system includes receiving means for receiving an indication of a target value of the braking action to be applied to the moving body, measuring means for measuring an indication of an actual value of the braking action applied to the moving body and driving means for driving the braking element according to a comparison between the target value and the actual value. The measuring means includes sensing means for sensing a warping of at least one part of the moving body and/or of the braking device, and logic means for estimating the actual value according to the warping. | 06-25-2009 |
20110069753 | METHODS AND SYSTEM FOR ENCODING/DECODING SIGNALS INCLUDING SCRAMBLING SPECTRAL REPRESENTATION AND DOWNSAMPLING - A method for encoding and decoding media signals, includes the operations of generating at a transmitting side multiple descriptions associated to data of the media signals through a downsampling operation performed on the data, and decoding at a receiving side the multiple descriptions for reconstructing the data by merging the multiple descriptions. The operation of generating multiple descriptions further includes the operations of obtaining a spectral representation of the data, including bands associated to different ranges, the bands being obtained by a suitable quantization operation and including at least one highly quantized band, that is subjected to a higher degree of quantization. A scrambling operation is performed on the spectral representation by moving the at least one highly quantized band to a different range, the scrambling operation being performed prior the downsampling operation. In decoding, a descrambling operation is performed before the merging operation on the multiple descriptions. | 03-24-2011 |
20110161457 | METHOD AND SYSTEMS OF DISTRIBUTING MEDIA CONTENT AND RELATED COMPUTER PROGRAM PRODUCT - Information codes are arranged in pieces comprised of chunks of bytes over a network, such as a Peer-to-Peer overlay network, including a set of peer terminals. A first peer identifies missing chunks in the received pieces and requests such missing chunks from other peers. The chunks are subjected to a fountain code encoding wherein the chunks in a piece are X-ORed. The first peer is therefore capable of reconstructing a received piece encoded with fountain codes from a combination of linearly independent chunks corresponding to the piece. The chunks are transmitted over the network with a connection-less protocol, without retransmission of lost packets, preferably with a UDP protocol. | 06-30-2011 |
20110184297 | METHOD AND DEVICE FOR ESTIMATING MORPHOLOGICAL FEATURES OF HEART BEATS - A method estimates morphological features of heart beats from an ECG signal. Peaks of the R wave of the ECG are detected and classified using a parallel filtering structure. The first branch implements a bandpass filtering with cut off frequencies of about 10 Hz and 35 Hz, enhancing the signal-to-noise ratio (SNR) of the QRS complex. The second branch estimates morphological features of the heart beat from an alternating current (AC) replica of the ECG signal, that may be used to classify the beat and potentially detect arrhythmias. | 07-28-2011 |
20110196615 | Processing of biological signals - A method processes a signal by storing a template sequence composed of a number N of consecutive digital samples of the signal; calculating a sequence of extended sums that includes, for each digital sample, an extended sum of absolute values of differences between N most recent digital samples and the samples of the template sequence; detecting minima of the sequence of extended sums; and estimating a period of the signal as a time interval between two consecutive minima of the sequence of extended sums. The method also estimates the noise level of the signal as a ratio between most recently-detected minimum and maximum of said sequence of extended sums. The method also generates a reduced-noise replica of the signal as a weighted average of the template sequence and of the current samples of the signal processed between two consecutive minima of said extended sum, the weighted average being calculated using weights based on the estimated noise level. | 08-11-2011 |
20130070861 | METHOD AND SYSTEM FOR THE TREATMENT OF MULTIPLE-DESCRIPTION SIGNALS, AND CORRESPONDING COMPUTER-PROGRAM PRODUCT - A processing system, such as typically a CPU, is used for converting a digital signal organized in pixels, such as a video signal, between a first format and a second multiple-description format. The system comprises at least one input register and at least one output register, and is configured via instructions, that can be constituted at least in part by instructions of a SIMD type, so as to: order the pixels of the signal to be converted in a set of input registers; and take selectively the pixels from the aforesaid set of input registers and place them in an orderly way in at least one output register. | 03-21-2013 |
20130198151 | METHODS FOR FILE SHARING RELATED TO THE BIT FOUNTAIN PROTOCOL - An embodiment relates to distributing media over a peer-to-peer network by employing a digital fountain coding. Accordingly, the file is separated into file portions and the portions are combined to obtain encoded portions which are then transmitted. A file portion may form a part of a plurality of the encoded and transmitted file portions. The portions may be pieces and/or blocks of the file, wherein a piece includes a plurality of blocks. An embodiment further provides mechanisms for efficient block-request-transmission approaches in which the initial requests for blocks in the file are transmitted and additional requests for some random blocks are transmitted. The additional requests may be transmitted after each piece or after the entire file blocks have been requested, or both. | 08-01-2013 |