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| Application No. | Application Title | Issue Date |
| 20120131080 | Multi-Input IIR Filter with Error Feedback Methods and systems for multi-input IIR filters with error feedback are disclosed. By using multiple-inputs to generate multiple outputs during each iteration, a multi-input IIR filter in accordance with the present invention has greatly increased throughput. Furthermor... | 05/24/2012 |
| 20120110051 | Reconfigurable Digital Signal Filter Processor A reconfigurable digital signal filter processing unit for use in a communication device is provided. The reconfigurable filters processor can implement different filter topologies to adapt to a range or wireless technology characteristics. The reconfigurable filter pro... | 05/03/2012 |
| 20120016921 | Method and Apparatus for Compressive Domain Filtering and Interference Cancellation A method for compressive domain filtering and interference cancelation processes compressive measurements to eliminate or attenuate interference while preserving the information or geometry of the set of possible signals of interest. A signal processing apparatus assume... | 01/19/2012 |
| 20120011183 | METHOD AND APPARATUS OF ADAPTIVELY CANCELING A FUNDAMENTAL FREQUENCY OF AN ANALOG SIGNAL A system includes a first powered apparatus having a first analog signal with a fundamental frequency; and a second apparatus providing load diagnostics or power quality assessment of the first apparatus from a second digital signal. The second apparatus includes an inp... | 01/12/2012 |
| 20110264722 | SYSTEMS AND METHODS FOR AN ADJUSTABLE FILTER ENGINE Systems and methods are provided for an adjustable filter engine. In particular, an electronic system is provided that can include a focus module, memory, and control circuitry. In some embodiments, the focus module can include an adjustable filter engine and a motor. B... | 10/27/2011 |
| 20110119320 | DYNAMIC FILTERING DEVICE AND METHOD THEREOF A dynamic filtering device includes a variation detector, a coefficient generator and a filter. The cut-off frequency of the filter is dynamically adjusted according to variations of an input signal. A higher signal-to-noise ratio is obtained when a finger moves in slow... | 05/19/2011 |
| 20100299381 | Algorithm for the Adaptive Infinite Impulse Response Filter A new method to adjust the parameters of an adaptive Infinite Impulse Response (IIR) filter is suggested. The method adjusts the set of parameters of the pole polynomial of the filter. The parameters of the zero polynomial are calculated from the parameters of the pole ... | 11/25/2010 |
| 20100262641 | Method and System for Estimating and Applying a Step Size Value for LMS Echo Cancellers Disclosed is an improved method and apparatus for estimating and applying a step size value for a least mean squares echo canceller. A power estimate of an excitation signal is compared to a reference power level to determine a shift adjustment. The shift adjustment is ... | 10/14/2010 |
| 20100228810 | METHOD AND SYSTEM FOR UNCONSTRAINED FREQUENCY DOMAIN ADAPTIVE FILTERING Aspects of a method and system for unconstrained frequency domain adaptive filtering include one or more circuits that are operable to select one or more time domain coefficients in a current filter partition. A value may be computed for each of the selected one or more... | 09/09/2010 |
| 20100223311 | PARTICULAR SIGNAL CANCEL METHOD, PARTICULAR SIGNAL CANCEL DEVICE, ADAPTIVE FILTER COEFFICIENT UPDATE METHOD, ADAPTIVE FILTER COEFFICIENT UPDATE DEVICE, AND COMPUTER PROGRAM By using the adaptive filter, the reference input signal is processed so as to identify a pseudo-signal of a particular signal to be deleted. The pseudo-signal is subtracted from the mixture containing a target signal inputted from a microphone, the particular signal to... | 09/02/2010 |
| 20100198899 | METHOD AND DEVICE FOR LOW DELAY PROCESSING Adaptive processing of an input signal is achieved by offline analysis, with inline processing comprising an adaptive filter. The method comprises passing the input signal through an adaptive time domain filter to produce an output signal. The input signal and/or output... | 08/05/2010 |
| 20100191786 | DIGITAL SIGNAL PROCESSING BLOCK WITH PREADDER STAGE A digital signal processing block with a preadder stage for an integrated circuit is described. The digital signal processing block includes a preadder stage and a control bus. The control bus is coupled to the preadder stage for dynamically controlling operation of the... | 07/29/2010 |
| 20100023263 | Position Detection Method And Position Detection Apparatus For A Preceding Vehicle And Data Filtering Method A method for detecting the position of a preceding vehicle (2) in relation to an same-vehicle (1), comprising a step of acquiring a primary data set having vehicle range information ri and lateral position information Li, Ri 01/28/2010 | |
| 20090319066 | AUDIO REPRODUCING APPARATUS An audio reproducing apparatus has a correction coefficient holding means (6) for holding at least one set of correction coefficients (K0) based on an inverse characteristic (H0) of a transfer characteristic from a speaker means (10) to a lis... | 12/24/2009 |
| 20090285335 | Adaptive Digital Filter, FM Receiver, Signal Processing Method, and Program A complex signal in which one of two signals that have been generated from a single real signal and that have phases that are shifted 90° with respect to each other is a real part and the other signal is an imaginary part is applied as input to an input terminal. A fil... | 11/19/2009 |
| 20090207955 | Adaptive Digital Filter, FM Receiver, Signal Processing Method, and Program The adaptive digital filter of the present invention includes: a filter unit that includes a plurality of multipliers (3360-336N-1) that are divided into groups of at least one multiplier and the other multipliers based on expected va... | 08/20/2009 |
| 20090181637 | ADAPTIVE FILTER FOR CHANNEL ESTIMATION WITH ADAPTIVE STEP-SIZE A receiving apparatus for a digital mobile communication system comprises an adaptive filter for filtering an input signal. A step-size parameter chosen for the adaption of filter coefficients of the adaptive filter is computed from a variation of the filter coefficient... | 07/16/2009 |
| 20090172060 | FILTER ADAPTIVE FREQUENCY RESOLUTION In signal processing using digital filtering the representation of a filter is adapted depending on the filter characteristics. If e.g. a digital filter is represented by filter coefficients for transform bands Nos. 0, 1, . . . , K in the frequency domain, a reduced dig... | 07/02/2009 |
| 20090070397 | METHOD FOR ACTIVE NOISE REDUCTION AND AN APPARATUS FOR CARRYING OUT THE METHOD In active noise reduction, at least one input signal (25) is fed to a computing unit (18), which passes on the at least one input signal (25) to at least one additional computing unit (19), wherein the at least one input signal (25) is... | 03/12/2009 |
| 20080301211 | SYSTEMS, METHODS AND APPARATUS FOR D-DIMENSIONAL FORMULATION AND IMPLEMENTATION OF RECURSIVE HIERARCHICAL SEGMENTATION Systems, methods and apparatus are provided through which in some embodiments of recursive hierarchical segmentation of data with any number of spatial dimensions. Some embodiments of the recursive hierarchical segmentation include computationally efficient parallel imp... | 12/04/2008 |
| 20080288570 | CORRELATION DEVICE A correlation device is provided that includes an adder for adding an input signal sequence and an auxiliary signal sequence to obtain an addition signal sequence, and a delay element for delaying the addition signal sequence to obtain the auxiliary signal sequence, whe... | 11/20/2008 |
| 20080250090 | Adaptive filter device and method for determining filter coefficients An adaptive filter device, including a finite impulse response (FIR) filter which is based on filter coefficients, which are determined based on a predetermined iterative adaptation algorithm for determining filter coefficients of an adaptive filter, wherein, in at leas... | 10/09/2008 |
| 20080222229 | DETERMINATION OF INCREMENTAL VALUE IN SERVER PROCESSED DATA The accumulated change in values representative of actions taken by a processor, such as the number of email messages processed by an email server, in a given time period is determined. Actions are represented as data points on a plot. Look-ahead intervals are defined f... | 09/11/2008 |
| 20080147766 | Circuit Arrangement and Method for Receiving Specially Designed Coded Signals In order to attain an optimally compressed, narrow pulse peak at the filter output of a correlation filter for the purpose of reception, the interfering secondary maxima of the autocorrelation function of binary codes must be as small as possible. The invention uses spe... | 06/19/2008 |
| 20080082597 | Low power and low complexity adaptive self-linearization A method of signal processing comprises receiving an unknown input signal that includes a distorted component and an undistorted component, the unknown input signal having a sampling rate of R; and performing self-linearization based at least in part on the unknown sign... | 04/03/2008 |
| 20080066612 | Filter device and electronic musical instrument using the filter device In a filter device, a filter coefficient calculation circuit has a parameter table. The parameter table stores a plurality of sets of filter coefficients associated with a first parameter based on a frequency and a second parameter based on respective plurality of level... | 03/20/2008 |
| 20080019537 | MULTI-CHANNEL PERIODIC SIGNAL ENHANCEMENT SYSTEM A multi-channel signal enhancement system reinforces signal content and improves the signal-to-noise ratio of a multi-channel signal. The system detects, tracks, and reinforces non-stationary periodic signal components of a multi-channel signal. The periodic signal comp... | 01/24/2008 |
| 20070299635 | Removing electrical noise in systems with ADCs Signal processing systems and methods are described that include a multi-analog receiver front end with adaptive filtering. The multi-analog receiver front end uses two or more analog-to-digital converters (ADCs) to remove additive electrical noise present in the analog... | 12/27/2007 |
| 20070239814 | Statistical control of adaptive ocular filter stability An electroencephalograph system and method for controlling the stability of an adaptive filter during high noise spikes in ocular sensor channels. The method comprises receiving a signal from at least one sensor and determining when an adaptive filter algorithm is subje... | 10/11/2007 |
| 20070233763 | Method and computer program for group delay and magnitude equalization with relaxed phase slope constraint The present invention is a method and computer program for equalizing group delay and magnitude of a system for which a system response is known. The method and computer program are implemented via a finite impulse response (“FIR”) filter for the system, and the met... | 10/04/2007 |
| 20070168408 | Parallel system and method for acceleration of multiple channel LMS based algorithms A parallel system for performing LMS coefficient adaptation includes a data memory, a tap memory, and two or more LMS hardware units. The LMS hardware units utilize data stored in the data memory and coefficients stored in the tap memory for performing multiple LMS coef... | 07/19/2007 |
| 20070098061 | Apparatus, system, and method for adaptive asynchronous equalization using leakage An apparatus, system, and method are disclosed for adaptive asynchronous equalization using leakage. An equalizer sums products of a plurality of tap signals from a delay line sampling a read signal and a plurality of corresponding tap coefficients to form an equalized ... | 05/03/2007 |
| 20070071253 | Signal processing method and apparatus A signal processor includes: a first adaptive filter that takes a first signal as input and generates a first pseudo signal; a first subtractor that subtracts the first pseudo signal from a second signal to supply a first differential signal as output; a second adaptive... | 03/29/2007 |
| 20060095488 | Method and system for estimating and applying a step size value for LMS echo cancellers Disclosed is an improved method and apparatus for estimating and applying a step size value for a least mean squares echo canceller. A power estimate of an excitation signal is compared to a reference power level to determine a shift adjustment. The shift adjustment is ... | 05/04/2006 |
| 20050216542 | Transform domain adaptive filter, equalizer and wireless communication device using the same, and decision feedback equalization method A transform domain adaptive filter (TDAF) is provided. The transform domain adaptive filter includes a filter device, a computing device and an adaptive algorithmic device. The filter device has a transform matrix device for pre-whitening an input signal to obtain a pre... | 09/29/2005 |
| 20050203981 | Position information estimation device, method thereof, and program Observed signals x1(t) to xj(t) from a plurality of sensors disposed in two dimensions are subject to a short-time Fourier transform, from which signals X1(ω1) to X1(ωN), . . . XJ(ω1 09/15/2005 | |
| 20050160126 | Constrained filter encoding of polyphonic signals Signals of different channels (C1-CN) are combined into one mono signal (x). A set of adaptive filters, preferably one for each channel (C1-CN), is derived in a respective filter adaptation unit (30:1-30:N). When an adaptive f... | 07/21/2005 |
| 20050147258 | Method for adjusting adaptation control of adaptive interference canceller The present invention describes a method for temporal adjustment of adaptation control of an adaptive interference canceller (AIC) based on spatially weighted beamforming pre-processing. Most importantly, the present invention enhances the spatial blocking performance, ... | 07/07/2005 |
| 20050119772 | Digital signal processing apparatus, method thereof and headphone apparatus A digital signal processing apparatus in which a first digital filter reproduces that part of an impulse response that responds fast, and a decimation filter converts the output of a delay device of the first digital filter to a digital signal having a sampling rate of ... | 06/02/2005 |
| 20050102339 | METHOD OF SETTING A TRANSFER FUNCTION OF AN ADAPTIVE FILTER A method of setting a transfer function of an adaptive filter. The adaptive filter is used for processing an audio signal. The method includes setting a first, a second, and a third pole, setting a first zero without resting upon the audio signal. A real part of the fir... | 05/12/2005 |
