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8504601 FIR filter with reduced element count  
A finite impulse response (FIR) filter having a differential output and capable of having negative coefficients, and a method of designing the filter, is disclosed. In contrast to the prior art,...
8499019 Electronic hardware resource management in video processing  
Apparatus and methods for electronic hardware resource management in video processing are provided. A hybrid filter is controllable to apply either Finite Impulse Response (FIR) filtering or...
8494099 Signal processing using modified blockwise analytic matrix inversion  
In one embodiment, a method for signal processing is provided that uses an improved inversion to mitigate the imprecision introduced by fast approximate methods for division. An input signal is...
8489662 Systems and methods for sliding convolution interpolating filters  
Certain embodiments of the invention may include systems and methods for implementing a multirate digital interpolating filter. According to an example embodiment of the invention, the method...
8484272 Unified pulse shaping for multi-carrier and single-carrier waveforms  
To transmit a multi-carrier signal, a transmitter provides zero symbols for guard subbands, performs OFDM modulation, and filters the resultant time-domain samples with a pulse shaping filter. To...
8484271 Recursive Bessel filter for stray light corrections in an imager  
A system for correcting infrared (IR) radiances includes an imager for receiving IR radiances and outputting intensity data corresponding to pixels in the imager. Also included is a stray light...
8484270 System and method for adaptive stimulus-response signal filtering  
A system and method for filtering a signal comprising: receiving a signal of interest; receiving a signal indicating that a stimulus has been applied; receiving the synchronized stimulus signal...
8473286 Noise feedback coding system and method for providing generalized noise shaping within a simple filter structure  
A noise feedback coding (NFC) system and method that utilizes a simple and relatively inexpensive general structural configuration, but achieves improved flexibility with respect to controlling...
8473535 High-speed pulse shaping filter systems and methods  
A first system and method relates to an analog current-mode method using branch systems. In the analog current-mode implementation, multiple branches systems can be scaled according to filter...
8468187 Digital filter device, phase detection device, position detection device, AD conversion device, zero cross detection device, and digital filter program  
A digital filter device capable of removing the effect of noise such as chattering from a zero crossing signal is provided. A digital filter device 4 filtering a binary digital signal DIN and...
8452826 Digital frequency channelizer  
A method and apparatus provide digital frequency channelization of a digitally sampled input stream having a first bandwidth. The method and apparatus are implementable in software, firmware or...
8446942 Waveform equalization circuit and waveform equalization method  
A waveform equalization circuit includes: a decision feedback equalization unit that feeds back and equalizes an input signal; a clock phase adjustment unit that adjusts a clock phase of a signal...
8447798 Look up table (LUT) structure supporting exclusive or (XOR) circuitry configured to allow for generation of a result using quaternary adders  
A lookup table structure having multiple lookup tables is configured to include a quaternary adder. In particular examples, an adaptive logic module (ALM) including a fracturable lookup table...
8443025 Method and apparatus for selectively reducing noise in a digital signal  
Wavelet thresholding using discrete wavelet transforms is a sophisticated and effective approach for noise reduction. However, usage of integer arithmetic implies that not the full range of input...
8443024 Time-domain gated filter for RF communication systems  
A time domain filter receives a double sideband (DSB) input in the frequency domain and compresses this input into a time domain signal filtered by a time gate for providing a time filtered signal...
8442825 Biomimetic voice identifier  
A device for voice identification including a receiver, a segmenter, a resolver, two advancers, a buffer, and a plurality of IIR resonator digital filters where each IIR filter comprises a set of...
8441386 Method to reduce voltage swing at comparator input of successive-approximations-register analog-to-digital converters  
A SAR ADC includes a DAC including a first set of capacitors each having a first end connected to a common node, and a second end, and a first set of switches each connecting the second end of a...
8443026 Partially complex modulated filter bank  
An apparatus for processing a plurality of real-valued subband signals using a first real-valued subband signal and a second real-valued subband signal to provide at least a complex-valued subband...
8417749 Specifying a multirate digital filter based on a ratio of an input sample rate to an output sample rate  
Approaches for preparing a design of a digital multirate filter. In one approach, an objective function and an input and output characteristic are input for determining an effectiveness of a...
8412759 System and method for active diplexers  
Methods and systems for signal filtering in electronic devices are provided. More particularly, methods and systems for filtering of radio frequency (RF) signals are provided. A filter circuit may...
8411733 Signal equalizer for a signal transmission network  
In an RF signal transmission network such as the reverse channels of a coaxial cable network, there is provided at least one adaptive equalizer for pre- or post-filtering inter-symbol interference...
8412478 Device for determining an error induced by a high-pass filter and associated error correction method  
Device for determining an error induced by a high-pass filter in a signal, including a unit (3) for calculating the error according to the formula: E(t)=Ve(t)−Vs(t)=2·Π·Fc·∫α=t0t(Vs(α)−...
8406359 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...
8405532 Asynchronous sample rate converter  
Systems and methods for asynchronous sample rate conversion are provided that allow time-varying arbitrary sample ratios. An uncorrected ratio between two arbitrary sample rates is corrected and...
8401135 Post-equalization amplitude latch-based channel characteristic measurement  
A serial data receiver includes an amplitude path including a first signal conditioner that adds a first offset or subtracts a second offset based on a selection input, a preamp configured to...
8396167 DC compensation  
An apparatus comprising an analog filter, an analog to digital converter coupled to said analog filter; and a digital filter coupled to said analog to digital converter; wherein the apparatus is...
8396912 Infinite impulse response resonator digital filter  
The IIR resonator digital filter which is the subject of this patent invention comprises a first register having a plurality of inputs and outputs, a multiplexer/demultiplexer having a plurality...
8391650 Method and apparatus of image processing to detect edges  
An edge detection filter comprising an array of filter coefficients having an odd number of rows and columns, a first set of zero coefficients extending along a direction traversing the array...
8386549 Reduced complexity adaptive multistage wiener filter  
Multistage Wiener filters (MWF) represent a component of the MWF as an un-normalized vector of filter coefficients within a finite impulse response (FIR) filter in a manner that avoids reliance on...
8380769 Filter operation unit and motion-compensating device  
A filter operation unit that performs a multiply-accumulate operation on input data and a filter coefficient group including a plurality of coefficients using Booth's algorithm. The filter...
8380770 Mismatched filters for long binary codes  
A method for determining filter coefficients for a mismatched filter is disclosed. The method includes generating a code sequence having a code length, determining a length of the filter, and...
8380466 System identification method and program, storage medium, and system identification device  
A large-scale sound system or communication system is numerically and stably identified. When an input signal is represented by the M(≦N)-th order AR model, high-speed H∞ filtering can be...
8380771 Filter shaping using a signal cancellation function  
A signal filter and accompanying methods. In one embodiment, the filter includes a first mechanism for receiving a first signal. A second mechanism employs one or more modified representations of...
8379708 Method and circuit for digitally filtering a signal  
A method and circuit that gives a sequence pattern that represents directions of positive and negative transitions of the phase that continue over a predetermined number from a certain reference...
8370413 No-multiply finite impulse response (FIR) filter using phase additions  
The present invention is directed toward a Finite Impulse Response (FIR) no-multiply filter (NMF), which replaces complex multiplications with phase additions. At each tap in the FIR filter, only...
8352527 Statistical method for filter convergence without accumulating residual error  
Disclosed is a filter circuit, comprising a signal to be filtered, a difference circuit coupled to the signal to be filtered, a filter having an input coupled to the difference circuit, an...
8351554 Signal extraction  
The invention relates to an adaptive method of extracting at least of desired electro magnetic wave signals, sound wave signals (40, 42), and any other signals from a mixture of signals (40, 42,...
8346835 Filter structure and method for filtering an input signal  
The invention relates to a method and filter structure for filtering an input signal, which is applied to an input (1) of the filter structure, having a symbol rate. The input signal is guided to...
8346829 Methods and apparatus for reducing or avoiding use of non-shift based divisions in a communications device  
Methods and apparatus which reduce or completely eliminate non-shift based divisions as part of estimating transmitted symbols and/or generating slicing parameters corresponding to two symbol...
8346834 Information processing device and information processing method  
An information processing device for processing reception signals converted into digital signals, includes: a first conversion unit for executing sampling rate conversion of each of the digital...
8346833 Filter and method for filtering  
A filter and method of filtering modifies the computation order to accommodate horizontal symmetric filtering, and modifies the source operands while modifying the single instruction multiple data...
8340285 Method for efficient and zero latency filtering in a long impulse response system  
A method for long impulse response digital filtering of an input data stream, by use of a digital filtering system. Where the input data stream is divided into zero-input signals and zero-state...
8341202 Code division multiple access (CDMA) system for calculating coefficients of filter and method for filtering a received signal  
A method for calculating coefficients of a filter and a method for filtering are provided. The invention directly factorizes a specific function in a cepstrum domain by spectral factorization and...
8332450 Method of CORDIC computing vector angle and electronic apparatus using the same  
A method of computing a vector angle by using a CORDIC and an electronic apparatus using the same are disclosed. The electronic apparatus mainly includes a phase error detector, a loop filter, a...
8325835 Non-continuous orthogonal frequency division multiplexing system and control method of non-continuous orthogonal frequency division multiplexing system  
A Non-Continuous Orthogonal Frequency Division Multiplexing (NC-OFDM) system may be provided. The NC-OFDM system, including: a sensing unit to determine whether to use at least one frequency band;...
8326905 Transversal filter circuit with a plurality of delay units, multiplexers, and full adders suited for a smaller decision feedback equalizer  
A transversal filter circuit comprises a plurality of delay units, a plurality of multiplexers and a plurality of full adders. The plurality of delay units is coupled in series to delay a two-bit...
8321489 Software reconfigurable digital phase lock loop architecture  
A novel and useful apparatus for and method of software based phase locked loop (PLL). The software based PLL incorporates a reconfigurable calculation unit (RCU) that is optimized and programmed...
8320440 Equalizer circuit  
An equalizer circuit receives digital amplitude data A[N] which represents the amplitude level of the N-th (N is a nonnegative integer) signal to be transmitted via a transmission line and timing...
8300838 Method and apparatus for determining a modeled room impulse response  
A method of modeling a room impulse response according to an embodiment of the invention includes receiving a sound pressure signal that is obtained by a microphone when an impulse-type sound...
8301677 System and method for dynamic weight processing  
A dynamic weight processing system. The inventive system includes a first circuit for receiving an input signal and a second circuit for filtering the input signal with dynamic weights to provide...