|| List of recent Signal Processing-related patents
|Signal processing system with bist function, testing method thereof and testing signal generator|
A signal processing system includes a module under test, an oscillation signal generator, a translational filter, and a testing module. The module under test has a signal input end.
|Control apparatus and method for controlling control apparatus|
A control apparatus includes a signal processing module. The signal processing module includes a field programmable gate array and a volatile memory.
|Signal processing for hearing prostheses|
A device includes a sound input element for receiving a sound signal and converting the sound signal into an electrical signal. The device also includes an actuator and a sound processor for processing the electrical signal to generate a stimulation signal.
|Multi-band multi-path receiving and transmitting device and method, and base station system|
A multi-band multi-path receiving and transmitting device and method are provided. The multi-band multi-path receiving and transmitting device includes at least two multi-frequency couplers, a multi-band transceiver, and a signal processing module.
|Transmission module, shielding method, transmission cable, and connector|
A transmission module includes a connector component including a connector side substrate having a terminal component including a ground terminal and a data terminal, and a signal processing component mounted on the connector side substrate for processing a high frequency signal having a frequency higher than that of a data signal inputted or outputted via the data terminal; and a transmission cable component for transmitting the high frequency signal including a cable side substrate having a flexibility on which a cable side ground layer electrically connected to the ground terminal and a signal line to which the high frequency signal is transmitted are formed, the cable side ground layer being disposed at least at lower and upper sides of the signal line as a part including the cable side ground layer of the cable side substrate is folded.. .
|Digital generation of multi-carrier optical signals|
A transmitter of optical signals uses a single light transmitter to modulate a multi-carrier signal. The multi-carrier signal is generated by performing digital signal processing in the digital domain to generate a plurality of components by performing hilbert transform filtering.
|Optical signal processing device, optical signal processing method and recording medium|
An optimization unit in an optical receiver divides a symbol region out of a plurality of symbol regions into which signal points that specifies symbol information included in an optical signal are classified, into a plurality of division regions from the symbol center coordinate of the symbol region. Moreover, the optimization unit accumulates the signal points of the symbol information for every division region in the symbol region.
|Feedback path evaluation implemented with limted signal processing|
A method, including operating an adaptive system of a hearing prosthesis, and determining one or more feedback path parameters of the hearing prosthesis based on the operation of the adaptive system of the hearing prosthesis.. .
|Hearing device with a means for receiver current estimation and a method of estimating a receiver current for a hearing device|
A hearing device with a unit for estimating the current consumed by the receiver of the hearing device. The hearing device includes a signal input unit for converting an input signal picked up by the signal input unit into a digital audio signal, a signal processing unit for processing the digital audio signal, a digital-to-analog converter for converting a processed audio signal from the signal processing unit, a power amplifier for amplifying a converted audio signal from the digital-to-analog converter, a receiver for generating sound according to an amplified audio signal from the power amplifier, and a battery for powering the hearing device.
|Video signal processing device, video signal output device, and video signal processing method|
A video signal processing device performs signal processing on a baseband video signal decoded from a compressed video signal, and includes: an interpolation phase generating unit which obtains frame repeat information indicating positions of identical frames output sequentially, and generates interpolation phase information for generating an interpolation frame in which a motion between frames is interpolated; a motion vector estimating unit which estimates a motion vector between mutually different frames indicated by the frame repeat information; and an interpolation frame generating unit which generates the interpolation frame using the interpolation phase information and the motion vector, and outputs an output video signal having a frame rate equal to the frame rate of the baseband video signal.. .
|Three-dimensional form factor supporting high-speed signal processing systems|
A reconfigurable advanced rapid-prototyping environment (rare) solution provides a three-dimensional (x, y, z) interconnection fabric that is a modular, reconfigurable, fully scalable high performance computing architecture. Rare allows processing nodes (modules) to communicate with other processing nodes (modules) in a three-dimensional mesh architecture where every processing node (module) has access to all other nodes (modules) in the system.
|Ad converter, signal processing method, solid-state imaging device, and electronic apparatus|
Provided is an ad converter including a first ad converting unit in which pixel columns of a pixel array are divided into at least two groups, and that compares a first ramp signal and a first pixel signal output from a first group of the pixel columns and performs ad conversion on the first pixel signal; and a second ad converting unit that compares a second ramp signal and a second pixel signal output from a second group of the pixel columns and performs ad conversion on the second pixel signal, in which the first ramp signal is a signal of which a level is decreased with a constant slope over time in a d-phase period for detecting a signal level of a pixel signal, and the second ramp signal is a signal of which a level is increased with a constant slope over time in the d-phase period.. .
|Digital photographing apparatus and method of controlling the same|
A digital photographing apparatus includes a digital signal processing unit that obtains first image data from an input image and generates second image data using the first image data according to a condition that is previously set. A method of controlling a digital photographing apparatus includes obtaining first image data from an input image and generating second image data using the first image data according to a condition that is previously set..
|Sensor device and method for capacitive approximation detection|
A capacitive sensor device with an electrode system has a first transmitting electrode and a first reception electrode, wherein the first transmitting electrode can be brought into capacitive coupling with the first reception electrode, and a second transmitting electrode and a second reception electrode, wherein the second transmitting electrode can be brought into capacitive coupling with the second reception electrode, a signal generator for feeding the first transmitting electrode with a first electric alternating signal and the second transmitting electrode with a second electric alternating signal, and a signal processing device, which is coupled with the first reception electrode and with the second reception electrode, and which is adapted to form a first measurement variable from the difference between a first electric value tapped at the first reception electrode and a second electric value tapped at the second reception electrode. .
This invention can reduce heat that is generated in a first semiconductor chip and transfers, to a second semiconductor chip through through-silicon vias. The first semiconductor chip has the first through-silicon vias.
|Electronic identifying apparatus|
An electronic identifying apparatus includes a control terminal for inputting article information and an radio frequency (rf) tag for displaying the article information. The rf tag includes a signal receiving module, a first signal processing module electronically connected to the signal receiving module, and a first display module electrically connected the first signal processing module.
|Novel bell-shaped vibrator type angular rate gyro|
The present invention provides an angular rate gyro in which a bell-shaped vibrator having nonuniform thickness, axially symmetric and multi curved surface combined structural features is used as a sensitive element. The angular rate gyro is composed of the bell-shaped vibrator, a vibrator fixing shaft, a vibrator base, an airtight hood, a housing and a circuit system.
|Display device with mobile high-definition link port and signal processing method thereof|
A signal processing method for a display device is provided. The display device is capable of connecting a portable consumer electronic device via a high-definition link (mhl) port.
|Signal processing device and signal processing method|
A signal processing device including: one or more vector processors configured to perform vector processing to a signal using a parameter, one or more scalar processors configured to perform scalar processing for generating the parameter, a first circuit coupled to the one or more vector processors and the one or more scalar processors and configured to transfer the parameter from the one or more scalar processors to the one or more vector processors, and a second circuit coupled to the one or more vector processors and another circuit that inputs the signal to the second circuit, and configured to transfer the signal among the one or more vector processors and the other circuit.. .
|Multiple concurrent audio modes|
Embodiments described herein include devices and processes for concurrently processing different audio streams with different hardware-based audio processing modes. A computing device for such embodiments may have multiple hardware audio signal processing modes capable of parallel execution.
|Digital unit, signal processing system, and signal processing method|
The signal processing system includes a digital unit and a plurality of radio units. The digital unit is connected to a core system and configured to process radio digital signals.
|Protocols for wireless power transmission|
The present disclosure provides control protocols for wireless power transmission. An embodiment is presented where wireless power transmission may be carried out through pocket-forming where at least one transmitter, which may further include at least one micro-controller for digital signal processing, and one receiver may be utilized.
Apparatus, methods and methods of manufacture are provided for the processing of a current mode signal. A first signal processing stage comprising at least one output terminal is configured to produce a current mode output signal.
|Image capturing apparatus and image capturing method|
In a high speed image capturing state, a camera signal processing circuit is not needed to perform a signal process at a high screen rate, but at a regular screen rate. In the high speed image capturing mode, raw data of 240 fps received from an image sensor 101 are recorded on a recording device 111 through a conversion processing section 201 and a recording device controlling circuit 210.
|Image signal processing device and method|
A g interpolation method selector and an r/b interpolation method selector decide between a first case, which is not a monotonous increase or a monotonous decrease of pixel signals of three pixels in reference pixel signals used for producing an interpolation pixel signal, and a second case, which is the monotonous increase or the monotonous decrease. A g interpolation unit produces an interpolation pixel signal of g in such a manner as to change interpolation methods depending on the first case or the second case.
|Automated sound processor|
A method includes determining a first feature of a first audio signal at a first location in a signal processing path and determining, using the first feature, a first environmental classification of the first signal. Further, the method includes, based on the first environmental classification, enabling, modifying or disabling one or both of a first signal processing mode at the first location and a second signal processing mode at a second location in the signal processing path.
|Hearing assistance device control|
A hearing assistance device may be a hearing aid worn on a person or a mobile device. The hearing assistance device may perform a hearing assistance algorithm based on signal processing parameters.
|Digital signal processor with search function|
A control section of a digital signal processing device extracts a one-bit digital signal of a predetermined period from a memory section at a position designated by a jog dial and iteratively outputs the signal to a multi-bit converter. The multi-bit converter converts the one-bit digital signal into a multi-bit signal, and a multiplier subjects the multi-bit signal to fade-in and fade-out processing.
A method of echo cancellation in an acoustic system, comprising a first user device and at least one further user device, the method comprising, at the first user device: detecting an audio signal received from the at least one further user device over a communications network; supplying the audio signal when received to an audio signal processing module of the first user device, wherein the audio signal processing module processes the audio signal and outputs a processed audio signal to audio output means of the first user device; and controlling an echo cancellation process for cancelling echo from an audio signal received via audio input means of the first user device based on a loopback signal provided by the processed audio signal and selectively based on the received audio signal when detected.. .
|Decision feedback equalizer ('dfe') with a plurality of independently-controlled isolated power domains|
A decision feedback equalizer (dfe) that includes: a plurality of input signal lines comprising at least one data signal line and a plurality of power control signal lines; at least one output signal line; and a plurality of independently-controlled isolated power domains, where each independently-controlled isolated power domain is coupled to a corresponding one of the power control signal lines, each of the power control signal lines configured to transmit a power control signal to the independently-controlled isolated power domain dynamically, and each independently-controlled isolated power domain selectively consumes power in response to the power control signal, each independently-controlled isolated power domain configured to be dynamically powered up or powered down without impacting signal processing operations.. .
|Supporting simultaneous communication interfaces|
A system and method of creating more than one communication interface between a wireless device using a single, dual-radio transceiver by leveraging the basic service set (bss) and radio measurement information. A wireless device operating in multiple-in, multiple-put (mimo) mode maintains a first communications interface with an access point while establishing a second communications interface by downgrading the existing mimo connection to a single-in, single-out (siso) connection.
|Iterative data storage read channel architecture having dropout mitigation|
According to one embodiment, a magnetic medium's readback signal samples are processed iteratively to provide dropout mitigation for a read channel by feeding the decoder output decisions back to the read channel front end where they are used to drive the decision-aided digital signal processing functions and control loops. Since data decisions provided by the decoder are typically more reliable than those provided by the detector, a significant performance improvement is obtained.
|Cycle-slip resilient iterative data storage read channel architecture|
According to one embodiment, a magnetic medium's readback signal samples are processed iteratively to provide a slip-resistant read channel by feeding the decoder output decisions back to the read channel front end where they are used to drive the decision-aided digital signal processing functions and control loops. Since data decisions provided by the decoder are typically more reliable than those provided by the detector, a significant performance improvement is obtained.
|Device, system, and method of blind deblurring and blind super-resolution utilizing internal patch recurrence|
Devices, systems, and methods of blind deblurring and blind super-resolution utilizing internal patch recurrence. Small signal patches tend to repeat “as is” across multiple scales of a natural signal.
|Directivity detection device of trajectories of drops issuing from liquid jet, associated electrostatic sensor, print head and continuous ink jet printer|
A directivity detection device for detection of trajectories of electrically charged drops issuing from a liquid jet is provided. The device includes an electrostatic sensor and a signal processing unit.
|Signal handling apparatus for radio frequency circuits|
A signal handler providing high linearity in a small size, applicable across wide operating frequencies and bandwidths, while also adapted to preferred integrated circuit (ic) and printed circuit board technologies. In one implementation, a signal handling apparatus includes an input impedance transformer for receiving an input signal and matching an internal apparatus impedance, a splitter for providing n split signals, a number of signal processing circuits for processing the n split signals, a combiner for combining the n split signals into a combined signal, and output impedance transformer for receiving the combined signal and for matching the internal apparatus impedance to an output impedance of the apparatus.
|High-frequency signal processing device|
Disclosed is a high-frequency signal processing device capable of reducing transmission power variation and harmonic distortion. For example, the high-frequency signal processing device includes a pre-driver circuit, which operates within a saturation region, and a final stage driver circuit, which operates within a linear region and performs a linear amplification operation by using an inductor having a high q-value.
|Wireless power transmitting device and method for controlling to transmit wireless power signal in wireless power transmitting device|
There is provided a wireless power transmitting device including a transmission coil configured to transmit a wireless power signal to a wireless power receiving device; a driving driver configured to generate a wireless power driving signal which is a driving signal for the wireless power signal; an alternating current sensor configured to detect an alternating current signal of the transmission coil which is generated by a wireless power receiving signal including wireless power receiving information of a wireless power receiving device; an alternating voltage sensor configured to detect an alternating voltage signal of the transmission coil, the alternating current signal being generated by the wireless power receiving signal from the wireless power receiving device; a signal processing unit configured to process the alternating current signal and the alternating voltage signal from the alternating current sensor and the alternating voltage sensor; and a wireless power transmitting controller that, when the alternating current signal and the alternating voltage signal of the transmission coil are detected and signal processing is normally performed on at least one of the alternating current signal and the alternating voltage signal, obtains the wireless power receiving information through the signal on which the signal processing is performed and controls the driving driver on the basis of the wireless power receiving information. Further, there is provided a method for controlling to transmit a wireless power signal in the wireless power transmitting device..
|Electromagnetic wave spectrum analyzer and infrared thermal image analyzer including multiple resonance structures each having different resonance frequency|
An electromagnetic wave spectrum analyzer includes a plurality of resonance structures each having a different resonance frequency, a plurality of thermal legs configured to support the plurality of resonance structures, a substrate including circuit elements configured to detect resistance changes in the plurality of thermal legs, and a signal processing unit configured to analyze a spectrum of incident electromagnetic waves from the resistance changes. The plurality of thermal legs are formed of a thermistor material of which an electrical resistance is changed due to thermal energy of electromagnetic waves absorbed by the plurality of resonance structures..
|System and method for determination of flames in a harsh environment|
A system for determination of presence of flames is provided. The system includes a photosensitive transducer configured to generate a response signal that is a function of electromagnetic radiation from a flame source.
|Testing apparatus and testing method|
The present disclosure provides a testing apparatus for executing a test program, to perform a first test on a circuit component on a circuit board and a second test on the circuit board. The testing apparatus includes a first module, a second module, and a signal transmission line that connects the two.
|Methods for operating and configuring a reconfigurable processor|
The invention provides a method of compiling computer program instructions for implementation on a reconfigurable processor comprising a plurality of operational cells, each operational cell being connectable to and disconnectable from one or more of the other operational cells via a programmable interconnect, the method comprising: a routing step in which one or more signal processing paths are determined for performing one or more signal processing operations defined by the computer program instructions, each signal processing path comprising two or more of the operational cells connected via the programmable interconnect, the said signal processing paths being capable of implementation on the said operational cells and the said interconnect of the reconfigurable processor to perform the said one or more signal processing operations; and a post-routing step performed subsequent to the routing step in which an extended signal processing path is determined by extending one of the said signal processing paths determined in the routing step such that a critical path of the extended signal processing path is longer than a longest critical path of the signal processing paths determined in the routing step.. .
|Precision measurement of waveforms|
A machine-implemented method for computerized digital signal processing including obtaining a digital signal from data storage or from conversion of an analog signal, and determining, from the digital signal, one or more measuring matrices. Each measuring matrix has a plurality of cells, and each cell has an amplitude corresponding to the signal energy in a frequency bin for a time slice.
|Ultrasound elastography system and method|
The present invention relates to an ultrasound elastography system and method for providing a strain image of an anatomical site. The system comprises a signal processing unit (103) configured to receive a time-varying ultrasound signal from an ultrasound probe (101) having at least one transducer element, to determine axial motion data based on the time-varying ultrasound signal, the axial motion data indicating a relative axial motion between the ultrasound probe and the anatomical site in an axial direction (y), and to determine a lateral variation of the axial motion in a lateral direction (x) based on the axial motion data.
|Signal processing control in an audio device|
Methods, systems, and apparatus for controlling audio signal processing are described herein. In accordance with certain embodiments, a measure of coupling between at least one microphone and one speaker associated with an audio device is obtained.
|Optical receiver and method for controlling optical receiver|
In order to suppress occurrence of a code error which occurs when an optical receiver detects a signal over a wide range of input intensity of the signal light by using a simple configuration, an optical receiver includes local light oscillation unit for generating a local oscillation light with a constant intensity, light mixing unit for mixing the local oscillation light and a first signal light and outputting the mixed light as a second signal light, light receiving unit for converting the second signal light into an electrical signal and outputting the electrical signal as a first electrical signal, amplifying unit for amplifying the first electrical signal with a predeteiniined gain and outputting the amplified signal as a second electrical signal, and a signal processing circuit for processing the second electrical signal, wherein the gain is set so that the amplitude of the second electrical signal may be within an allowable input amplitude range of the signal processing circuit.. .
|Method, apparatus, and system for processing optical network signal|
Embodiments of the present invention provide a method, an apparatus, and a system for processing an optical network signal. The method includes: receiving an optical signal sent by an optical line terminal, where the optical signal includes two polarization components perpendicular to each other, and downlink data is modulated on one of the polarization components; dividing the optical signal into two signals, where each signal is the optical signal; demodulating the downlink data from one optical signal and performing, for the other optical signal, vertical polarization rotation processing and processing of modulating uplink data onto two polarization components of the optical signal; sending the other optical signal on which the vertical polarization rotation processing and the uplink data modulation processing are performed to the optical line terminal.
|Image signal processing apparatus and image signal processing method|
According to one embodiments, a user can selectively view any kind of images in a desired size without any troublesome operation. An apparatus has an input terminal.
|Entrainment avoidance with an auto regressive filter|
A method of signal processing an input signal in a hearing aid to avoid entrainment, the hearing aid including a receiver and a microphone, the method comprising using an adaptive filter to measure an acoustic feedback path from the receiver to the microphone and adjusting an adaptation rate of the adaptive filter using an output from a filter having an autoregressive portion, the output derived at least in part from a ratio of a predictive estimate of the input signal to a difference of the predictive estimate and the input signal.. .
|Reception signal processing device and method for processing reception signal|
A reception signal demodulation device which converts a modulated reception signal into a digital signal and performs signal reconstruction includes a demodulator which demodulates the received signal, a matched filter which improves a signal-to-noise power ratio of the signal from the demodulator, a threshold value discriminator which determines a compression rate based on the signal from the matched filter, and a reconstruction circuit which compresses the signal from the matched filter, converts it into the digital signal, and performs signal reconstruction from the signal converted into the digital signal based on the compression rate.. .
|Radio communication system, radio base station apparatus, user terminal and radio communication method|
The present invention is designed to prevent the decrease of capacity even when the ratio of uplink subframes and downlink subframes is changed in each component carrier in tdd carrier aggregation. With the radio communication method according to the present invention, a radio base station apparatus generates a downlink control channel signal containing downlink control information including carrier indicator field information, and transmits the downlink control channel signal to a user terminal, and the user terminal receives the downlink control channel signal and executes signal processing with respect to the downlink signal in accordance with the downlink control information.
|System and method for communication between mobile devices using digital/acoustic techniques|
Techniques have been developed for transmitting and receiving information conveyed through the air from one portable device to another as a generally unperceivable coding within an otherwise recognizable acoustic signal. For example, in some embodiments in accordance with the present invention(s), information is acoustically communicated from a first handheld device toward a second by encoding the information in a signal that, when converted into acoustic energy at an acoustic transducer of the first handheld device, is characterized in that the acoustic energy is discernable to a human ear yet the encoding of the information therein is generally not perceivable by the human.
|Sagnac interferometer-type fiber-optic current sensor|
In one embodiment, a sagnac interferometer-type fiber-optic sensor includes a synchronous detection circuit to carry out synchronous detection of detected light signal with a phase modulation angular frequency of a phase modulator. A signal processing circuit calculates and outputs the magnitude of current to be measured using the signal detected in the synchronous detection circuit.
|Apparatus and method for processing image signal, imaging apparatus, and method for displaying image|
An image signal processing apparatus includes a down-converter unit configured to down-convert an image signal having a first resolution into an image signal having a second resolution lower than the first resolution, a high-frequency-band-edge detection unit configured to perform filtering on the image signal having the first resolution to extract components in a higher frequency band than a frequency corresponding to the second resolution and to perform down-conversion on an edge detection signal obtained through the filtering to obtain an edge detection signal having the second resolution, and a combination unit configured to combine the edge detection signal obtained by the high-frequency-band-edge detection unit with the image signal having the second resolution generated by the down-converter unit so as to obtain an image signal having the second resolution and being to be displayed.. .
An imaging apparatus for performing efficient signal processing depending on the operational mode. In the finder mode, a ccd interface 21a decimates horizontal components of image data supplied from an image generating unit 10 to one-third and moreover processes the decimated image data with data conversion and resolution conversion to produce y, cb and cr image data which are routed to and written in an image memory 32 over a memory controller 22.
|Signal processor and signal processing method, solid-state imaging apparatus, and electronic device|
There is provided a signal processor including a phase difference detection part configured to acquire a pixel value of one light-shielding pixel having a part of a light-receiving region shielded therein and pixel values of a peripheral pixel row of the light-shielding pixel in a light shielding direction. A corrected pixel value obtained by subjecting the pixel value of the light-shielding pixel to a reduced sensitivity correction is compared with the pixel values of the peripheral pixel row to detect a phase difference of the light-shielding pixel..
|Spectroscopic analysis of oil sands ore face for real time ore blend management|
Apparatus is provided featuring a signal processor or signal processing module configured to receive signaling containing information about images of an ore sample; and determine information about a bitumen content of the ore sample based at least partly on the signaling, including for use in real time ore blend management in a bitumen recovery process related to mined oil sands. The ore sample may be an ore face, and the signaling may contain information about the images of the ore face.
|Driving method of image display device|
An image display device includes an image display panel configured of pixels made up of first, second, third, and fourth sub-pixels being arrayed in a two-dimensional matrix shape, and a signal processing unit into which an input signal is input and from which an output signal based on an extension coefficient is output, and causes the signal processing unit to obtain a maximum value of luminosity with saturation s in the hsv color space enlarged by adding a fourth color, as a variable, and to obtain a reference extension coefficient based on the maximum value, and further to determine an extension coefficient at each pixel from the reference extension coefficient, an input signal correction coefficient based on the sub-pixel input signal values at each pixel, and an external light intensity correction coefficient based on external light intensity.. .
|Steerable microwave backhaul transceiver|
A first microwave backhaul transceiver may comprise a reflector and a signal processing subassembly. The signal processing subassembly may comprise a plurality of antenna elements positioned at a focal plane of the reflector.
|Gnss signal processing method, positioning method, gnss signal processing program, positioning program, gnss signal processing device, positioning apparatus and mobile terminal|
A demodulation unit for a gnss signal processing device includes an operator that selects an error detecting method based on signs of early and late differential values and calculates an error detection value. A code phase range where an error detection value is not 0 is wide with a first error detecting method, and is narrow with a second.
|Frequency generator assembly|
The invention relates to a frequency generator assembly, including at least one oscillator and an electronic signal processing device, which is designed in such a way that the electronic signal processing device provides an electric clock signal (f) having a defined frequency as an output signal of the frequency generator assembly, wherein the defined frequency depends on the vibration frequency of the oscillator, wherein the oscillator includes at least one micromechanical seismic mass which is vibrationally excited by at least one driving device, whereupon the electronic signal processing device generates and provides the electric clock signal (f) according to the vibration frequency of the at least one seismic mass.. .
|Digital class-d amplifier and digital signal processing method|
A digital class d amplifier (10) is disclosed, comprising a pulse width modulator (pw mod) comprising: a digital loop filter (loop f) adapted to receive an input signal (x[n]) and a feedback signal (fb[n]), the digital loop filter (loop_f) being adapted to process at a clock frequency (f_s) said input and feedback signals for providing as output a filtered digital signal (w[n]); a pwm conversion module (pw_cm) having an input (24) for receiving the filtered digital signal (w[n]) and having a first output (25) connected to the digital loop filter (loop f), the pwm conversion module being adapted for processing the filtered digital signal (w[n]) and providing at said first output (25) the feedback signal (fb[n]). The pwm conversion module (pw_cm) comprises: a first comparator (cmp_n) adapted to compare the filtered digital signal (w[n]) with a first reference triangular waveform (vtn[n]) for providing as output a first pwm signal (yn[n]), the first reference triangular waveform having a frequency (f_osc) much lower than said clock frequency (f.s); a second comparator (cmp_p) adapted to compare the filtered digital signal (w[n]) with a second reference triangular waveform (vtp[n]) for providing as output a second pwm signal (yp[n]), the second reference triangular waveform (vtp[n]) being the inverse of the first triangular waveform (vtn[n]), said first (yn[n]) and second (yp[n]) pwm signals representing a differential output pulse width modulated signal (yn[n],yp[n])..