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7856464 Decimation filter  
A system and method for decimating a digital signal is disclosed. The system includes an input to receive digital data, a control input to receive a desired decimation rate, and an integrator...
7856463 Probability density function separating apparatus, probability density function separating method, testing apparatus, bit error rate measuring apparatus, electronic device, and program  
There is provided a probability density function separating apparatus that separates a predetermined component from a given probability density function. The apparatus includes: a domain...
7839924 Partial response transmission system  
A partial response signaling system includes a transmitter circuit configured to equalize input data in response to a control signal and to transmit a partial response signal through a...
7840624 Digital low pass filter  
Over-sampled data is filtered by receiving a word of over-sampled data including sample bits for each of a plurality of data bits, detecting a sample bit having one logic value and, on either side...
7835434 Adaptive radio frequency (RF) filter  
The invention relates to an adaptive Radio Frequency (RF) filter (11), which is particularly useful as an RF filter in Wireless Local Area Networks (WLAN's). As greater demands are placed on RF...
7831645 Digital resonant shelf filter  
A method and system for designing a discrete-time filter having a transfer function which approximates that of an analog shelf filter is disclosed. Prior art methods include applying the bilinear...
7817756 Circuit and method for suppressing interference components in received signal  
A circuit and method for suppressing interference components in a received signal are provided. The circuit includes an adaptive filter configured to process a first quantity of digital signal...
7817754 M-algorithm with prioritized user ordering  
Performing approximate diagonalization of a correlation metric by user permutation to improve Multiuser Detector (MUD) processing. The system reorders the entries in the S-Matrix in order to move...
7814137 Combined interpolation and decimation filter for programmable logic device  
A programmable logic device can be configured as a finite impulse response (FIR) filter capable of operating in either interpolation mode or decimation mode and of switching between those modes at...
7805018 Dynamic detection of blocking artifacts  
The present invention relates to a method of processing a sequence of digital images, intended to detect, in a dynamical manner, a grid comprising blocking artefacts. Said method comprises the...
7793013 High-speed FIR filters in FPGAs  
Methods, circuits, and an apparatus for filtering high-speed serial data is disclosed. In one embodiment, a Programmable Logic Device (PLD) is configured with a filter circuit for filtering serial...
7788066 Method and apparatus for improving noise discrimination in multiple sensor pairs  
Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is...
7788308 Frequency float method and system for realizing a signal filter  
A method for realizing a digital filter in an electronic system. The method includes first determining the specific number of coefficients to be calculated for a design filter and calculating the...
7787545 Multi-channel wavelet codec  
Wavelet filters computed from a wavelet transform are used as a means of pulse shaping binary data transmitted and received over multiple parallel channels. At the transmitter the data is parsed...
7783449 Digital high-pass filter for a displacement detection device of a portable apparatus  
A digital high-pass filter has an input, an output, and a subtractor stage, having a first input terminal, a second input terminal and an output terminal. The first input terminal of the...
7783434 Mass flow meter having an oscillation sensor and method for eliminating noise signals from the measurement signal  
Mass flow meter having at least one measurement tube, through which mass flows, as an oscillation body which can be set in mechanical oscillation by means of an excitation unit, the oscillation...
7782935 Half-rate DFE with duplicate path for high data-rate operation  
Methods and circuits are presented for providing equalization, including decision feedback equalization (DFE), to high data-rate signals. Half-rate delay-chain circuitry produces delayed samples...
7779061 Repetitive controller for compensation of periodic signals  
A repetitive controller scheme with positive feedback and feedforward introduces infinitely many poles on the imaginary axis located at the resonant peaks. The feedforward introduces zeros, which...
7769799 Discrete-time analog, digitally programmable filter and method  
Aspects provide discrete-time analog, digitally programmable filtering. A filter includes a plurality of transistors coupled as a current mode circuit. Further included is a switch for use in...
7769099 High-speed precoders for communication systems  
The invention relates to techniques for implementing high-speed precoders, such as Tomlinson-Harashima (TH) precoders. In one aspect of the invention, look-ahead techniques are utilized to...
7746970 Method and apparatus for filtering noisy estimates to reduce estimation errors  
Techniques for filtering noisy estimates to reduce estimation errors are described. A sequence of input values (e.g., for an initial channel impulse response estimate (CIRE)) is filtered with an...
7739068 Method of processing the output signal of a measuring transducer, and force-measuring device  
A method serves to process output signal of a measuring transducer in a force-measuring device, in particular in a balance, wherein the measuring transducer produces a measuring signal...
7724815 Method and apparatus for a programmably terminated receiver  
A method and apparatus for a receive equalizer of a gigabit transceiver that is reconfigurable to support multiple communication standards. Communication standards having variable common mode and...
7720140 Signal processing method, receiver and equalizing method in receiver  
A signal processing method, receiver and equalizing method are provided. The receiver comprises an estimator estimating a channel coefficient matrix from a received signal, a first calculation...
7715473 Channel equalizer, method and computer program for equalizing a channel  
A channel equalizer, method and computer program for equalizing a channel. The channel equalizer may include a feed forward filter and a switching unit. The switching unit may receive a signal...
7702702 Signal processing device for computing phase difference between alternating current signals  
A signal processing device includes a converting unit, a filtering unit, a differential computing unit, and a phase difference computing unit. The converting unit samples two alternating signals...
7698354 Programmable engine core for executing digital signal processing functions  
A flexible engine for implementing digital signal processing (DSP) functions involving repeating various arithmetic/logical operations on a stream of data includes multiple programmable filter...
7693922 Method for preprocessing a signal and method for signal processing  
A method for preprocessing a signal, wherein an iterative process with at least one iteration is performed to generate an output signal based on an input signal. In each iteration a preceding...
7693923 Digital filter system whose stopband roots lie on unit circle of complex plane and associated method  
A method is disclosed for providing a digital filter system for providing a low pass filter function to a digital input. The method includes the steps of determining a finite impulse response of...
7685216 Automatic input error recovery circuit and method for recursive digital filters  
Recursive digital filter circuitry which avoids persistent unstable conditions therein provides a serial clock signal, a synchronization signal, and a serial data input to corresponding inputs of...
7685217 Channel-select decimation filter with programmable bandwidth  
A channel-select decimation filter capable of operating in multiple bandwidth modes includes a first low pass filter stage, a variable gain stage, a subtraction module a second low pass filter...
7680600 Method, system and apparatus for formation tester data processing  
A method for data processing includes transforming measurement data acquired in the time domain during an oilfield operation into a second domain to produce transformed data; identifying...
7680872 Canonical signed digit (CSD) coefficient multiplier with optimization  
An apparatus comprising an address generation circuit, a lookup table, a multiplexer and an output circuit. The address generation circuit may be configured to generate a series of addresses. The...
7656978 Fast Q-filter  
An nonlinear digital signal processing filter (100, 200, 1100, 1308, 1310, 1312, 1346, 1604) maintains a magnitude ordering for successive windows of signal samples. A set of filter density...
7640281 Digital signal control using first order holds  
A method is provided to reduce delay in signal processing of a digital control system. The method includes receiving outputs from a digital controller at a first frequency. A pre-load data value...
7639762 Method for receiving and recovering frequency shift keyed symbols  
A receiver architecture for receiving an FSK signal having a predetermined number of modulation levels includes a selectivity filter (206) for selectively passing a wanted channel and rejecting...
7640282 Matched filtering  
A signal is filtered by multiplying its Fourier transform by the Fourier transform of a reference sequence to which the filtering is to be matched. The reference sequence (e.g. a Golay sequence...
7636746 Methods and systems for efficient filtering of digital signals  
A method in a signal processor for filtering samples in a digital signal is provided. An approximate filtered sample is generated as a function of eight samples of the digital signal. A correction...
7623582 Apparatus and method for estimating start of frame  
Disclosed is an apparatus and method for estimating a start point of a frame in a wireless communication system. The method includes the steps of receiving a frame and estimating the start of the...
7620673 Complimentary discrete fourier transform processor  
Method and apparatus for a complimentary discrete Fourier transform processor. An input signal is sampled, samples then being sequentially delayed, channelized, and processed. Synthesized outputs...
7616714 Process and device for the prediction of noise contained in a received signal  
A device and method for predicting noise in a signal that is received by a digital receiver is provided. The device includes an autocorrelation function determination device and a noise predictor...
7617267 Configurable multi-tap filter  
One embodiment of a configurable multi-tap filter includes a parallel-to-serial formatter configured to transform a pixel stream into a first component pixel stream and a second component pixel...
7613758 Method for optimization of Q-Filter kernel parameters  
A Q-Filter is a reconfigurable technique that performs a continuum of linear and nonlinear filtering operations. It is modeled by unique mathematical structure, utilizing a function called the...
7613575 Method for processing the output signal of a measurement transducer, and force-measuring device  
The output signal from a measuring transducer in a force-measuring device is processed by filtering a measuring signal (ms), representing a load that is acting on the transducer, to suppress...
7603399 Method and device for forming noise-filtered output values from input values encumbered with noise  
A method for noise filtering and a noise filter are for the filtering of override signals in a numerical control system. If an input value change condition is present, an accumulator is reset and...
7599978 Digital signal decimation by subspace projection  
A digital signal, x(n) (where n is an integer), is decimated by determining a signal vector, y(k), of size M by partitioning samples of the digital signal, x(n) according to sampling phases of the...
7584235 Variable passband autoregressive moving average filter  
A variable passband ARMA filter has as inputs a signal to be filtered, a reverse version of the signal to be filtered and a variable coefficient to produce as an output a filtered signal. The...
7570833 Removal of poisson false color noise in low-light images usng time-domain mean and variance measurements  
Disclosed are an image processing method capable of effectively removing noise contained in an image photographed in a low light environment by using statistical information, and a system thereof....
7571202 Method and apparatus for digital noise mask filtering  
A system and method for filtering spurious transitions from a digital signal is disclosed. The system includes a latch, a timer, and a logic circuit. Upon a transition of the digital signal, the...
7561076 Front-end method for NICAM encoding  
A NICAM encoding method comprises performing NICAM processing and coupling a front-end to the NICAM processing. The front-end processing operates with a system clock that is integer divisible such...