Matches 151 - 200 out of 535 < 1 2 3 4 5 6 7 8 9 10 11 >
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6920471 Compensation scheme for reducing delay in a digital impedance matching circuit to improve return loss  
A simple, power efficient and inexpensive digital compensation scheme for reducing delay in a digital impedance matching circuit to improve return loss. The scheme employs a digital filter to...
6920470 Signal processing integrated circuit  
A low power programmable digital filter integrated circuit architecture has a programmable front end servicing up to 4 digital sources. Changing the programming of the front end permits digital...
6915264 Cochlear filter bank structure for determining masked thresholds for use in perceptual audio coding  
A method and apparatus for determining masked thresholds for a perceptual auditory model used, for example, in a perceptual audio coder, which makes use of a filter bank structure comprising a...
6904179 Method for minimal-logic non-linear filter implementation  
A method for implementing a filter on a signal is disclosed wherein interval membership information is computed and stored in such a manner so as to use a minimal amount of memory thereby allowing...
6904444 Pseudo-median cascaded canceller  
An adaptive signal processing system utilizes a pseudo-median cascaded canceller to compute a set of complex adaptive weights and generate a filtered output signal. The system includes a plurality...
6898214 Technique for monitoring SONET signal  
A technique for performance-monitoring of a standard SONET signal involves first converting the optical signal to an electrical signal, removing in the framing signal time slot the framing signal...
6877021 Calculation method and apparatus  
A method of reducing the amount of computer memory utilized in calculating a formula on a collection of a plurality of series of data values, the method including the steps of: (a) for each data...
6868431 Circuit and method for processing data  
A Finite Impulse Response (FIR) filter circuit ( 60 ) includes delay elements ( 63, 64, 66 ), multipliers ( 71, 72, 73, 74 ), a summing device ( 78 ), and a digital integrator ( 69 ) at the output...
6862558 Empirical mode decomposition for analyzing acoustical signals  
The present invention discloses a computer implemented signal analysis method through the Hilbert-Huang Transformation (HHT) for analyzing acoustical signals, which are assumed to be nonlinear and...
6822227 Time-of-flight mass spectrometry utilizing finite impulse response filters to improve resolution and reduce noise  
A mass spectrometer having an ion accelerator and an ion detector utilizing a finite impulse response filter is disclosed. The ion accelerator generates an ion pulse in response to a start signal....
6816621 Method for generating shift-invariant filters  
A novel method is presented for implementing a filter for processing a discrete signal having the steps of first obtaining a plurality of sample values from the discrete signal; then using each...
6809777 Pixel calculating device  
A pixel calculating device for performing vertical filtering that includes 16 pixel processing units 1 to 16 and an input buffer group 22 storing 16 pieces of pixel data and filter coefficients....
6792444 Filter devices and methods  
A filtering method is proposed wherein first several filtering steps (I-III, IV-VI) are made. Each step (I-III,IV-VI) includes: generating a filtered signal (I,IV), rounding this filtered signal...
6782404 Jitter tolerance improvement by phase filtration in feed-foward data recovery systems  
Over-sampled timing signal jitter tolerance is improved in a q-times over-sampled architecture by phase-sampling the timing signal to produce a plurality of input phase samples φ in , where φ in...
6782297 Methods and apparatus for data smoothing  
A method and apparatus for smoothing data comprises adjusting data according to a first smoothing technique and selectively adjusting the data according to a second smoothing technique. The method...
6778111 Multi-dimensional deglitch filter for high speed digital signals  
A system and method provide deglitch filtering. The system has a voltage-based deglitching filter and timing-based deglitching filter. The voltage-based deglitching filter connects with the...
6778710 Method for generating increasing shift-invariant filters  
A novel method for implementing a filter for processing discrete signal image is presented having the steps of first obtaining a plurality of sample values from said discrete signal image and then...
6775684 Digital matched filter  
A digital matched filter has a serial-to-parallel conversion circuit that converts input data fed thereto in serial form into n sets of parallel data and a plurality of delay circuits that each...
6768607 Adaptive dual-frequency notch filter  
A disk drive comprises an actuator servo control system including at least one disk, an actuator structure comprising at least transducer head for writing and/or reading data from the disk and...
6763323 Resolution filter for a spectrum analyzer  
A spectrum analyzer comprises a mixer, which mixes complex conjugate input signal v*(t) into a base band signal x(t) and a resolution filter, which filters the base band signal for narrow band. In...
6760372 Adaptive signal processor using an eye-diagram metric  
The invention is embodied in an adaptive filtering system for processing a received signal, including a signal processor having plural states to generate a processed signal from the received signal...
6760740 Method of calculating line spectral frequencies  
In a method of encoding a source signal by determining Line Spectral Frequencies (LSFs) for representing Linear Predictive Coding (LPC) filter coefficients, real zeros are determined in associated...
6757343 Discrete wavelet transform system architecture design using filterbank factorization  
Techniques to overlap states for efficient multilevel wavelet decompositions to reduce memory and delay in discrete wavelet transform in a block-by-block fashion. The input data is segmented into...
6757569 Filtering process for stable and accurate estimation  
A filtering process is adapted for eliminating the need of prediscretizing a continuous-time differential model into a discrete-time difference model. It provides a universal robust solution to the...
6754805 Method and apparatus for configurable multi-cell digital signal processing employing global parallel configuration  
An improved mechanism for performing different types of digital signal processing functions, including correlation, sorting, and filtering operations. The mechanism includes a plurality of...
6751277 Filtering device  
The invention relates, in the field of subband decomposition, to the design of filter banks adapted to the input signal statistics. In most cases, two channel filter banks are iteratively applied...
6751640 Method and apparatus for multiply-accumulate two-dimensional separable symmetric filtering  
An architecture for a multiply and accumulate two-dimensional separable symmetric filter. The architecture includes a binary tree adder producing sums of samples of an incoming signal. A multiplier...
6744835 Methods and apparatus for implementing an interpolation finite impulse response (FIR) filter for use in timing recovery  
A finite impulse response (FIR) filter employing hybrid coefficients for use in analog-to-digital and digital-to-analog conversion. Clock jitter introduced by the transmission medium may be...
6738734 Empirical mode decomposition apparatus, method and article of manufacture for analyzing biological signals and performing curve fitting  
A computer implemented physical signal analysis method includes four basic steps and the associated presentation techniques of the results. The first step is a computer implemented Empirical Mode...
6721770 Recursive state estimation by matrix factorization  
A filter is disclosed for recursive state estimation of a process by matrix factorization. The filter preferably takes the general form of P=XY, where P is a matrix of previous state and/or current...
6711598 Method and system for design and implementation of fixed-point filters for control and signal processing  
A method and system is disclosed for design and implementation of fixed-point filters from floating-point filters. A design sequence for designing a fixed-point filter for a system is selected. A...
6680644 Digital interpolation window filter for phase-locked loop operation with randomly jittered reference clock  
A system and method for filtering a jittered clock is disclosed. The filter of the present invention may check if a reference clock is received at a point in time within a pre-defined window of...
6680476 Summed time-of-flight mass spectrometry utilizing thresholding to reduce noise  
A summed TOFMS having a filter for identifying detector outputs that are likely the result of noise rather than ions striking the ion detector. The TOFMS stores a plurality of data values at...
6668087 Filter arithmetic device  
A filter operation apparatus according to the present invention involves a vertical and horizontal half-pixel motion compensation and vertical and horizontal intra-loop filtering means 100 ...
6668013 Digital filter  
A digital filter of the present invention is an FIR type digital filter arranged such that an input data converting circuit samples input data at a rate N times as fast as a sampling frequency fs,...
6658440 Multi channel filtering device and method  
A filter comprising of an internal memory for storing data and coefficients; an address generation unit, for generating memory addresses; a multiply and accumulate unit (i.e.—MAC unit), for...
6643674 Digital filtering method and device and sound image localizing device  
A series of digital data to be filtered is divided into a plurality of frames, and f samples of the digital data of each of the frames are burst-transmitted via a computer bus. In transferring the...
6643323 Digital filtering method  
A method of implementing a digital filter utilizes a fast and accurate reciprocal estimate function to generate and recharacterize the digital filter on the fly. The reciprocal estimate function...
6639948 Fractional delay digital filter  
A device is presented for processing digital signals conveyed between a common port and many particular ports. The device includes a linear processing module. The module includes filters, which...
6633894 Signal processing arrangement including variable length adaptive filter and method therefor  
A signal processor includes an adaptive filter that generates an output signal as a function of an input signal and of weighting coefficients stored in a memory. An error detector generates an...
6631273 Method and apparatus for filter selection from a frequency synthesizer data  
Modern portable communications units, and in particular cellular telephones, can contain several frequency bands for receiving and several frequency bands for transmitting signals. Typically these...
6625628 Method and apparatus for digital filter  
A digital filter having a small amount of hardware is realized by constructing a cosine roll-off filter. In the filter the first and fifth multipliers and the second to fourth multipliers are...
6622118 System and method for comparing signals  
A method and system that include a first measurement signal and a second measurement signal that can be input to first and second filters. The filters can be subject to a first constraint to...
6622117 EM algorithm for convolutive independent component analysis (CICA)  
In connection with blind source separation, proposed herein, inter alia, are: expectation-maximization equations to iteratively estimate unmixing filters and source density parameters in the...
6611854 System and method for distorting a signal  
The present invention employs a mapping function in order to apply a known distortion to an input signal. The mapping function of the present invention is defined by:...
6606641 System for varying the dynamic range of coefficients in a digital filter  
A digital filter includes a plurality of filter cells, each of which includes circuitry to determine a coefficient for the filter cell, to adjust the coefficient in accordance with a gain that is...
6603812 Hardware implementation of a decimating finite impulse response filter  
The invention provides apparatus and methods for generating the coefficients of a finite impulse response digital filter used in signal sample rate conversion. Sequence generation circuitry...
6600495 Image interpolation and decimation using a continuously variable delay filter and combined with a polyphase filter  
A filter structure is provided that facilitates the use of the filter as either a continuous delay Farrow filter or a selectable delay polyphase filter. The less complex polyphase filter is used...
6597746 System and method for peak to average power ratio reduction  
A system and method for performing peak-to-average power ratio reduction in a transmitter using pulse amplitude modulation (PAM) encoding. Broadly, a transmitter is configured to perform active...
6591282 Apparatus and method for a DC-Insensitive FIR filter for optical PRML channel  
A Finite Impulse Response filter (FIR) reduces the effect of baseline wandering of the input signal on convergence. The FIR includes an adder, a DC-Insensitive error calculator, a DC-Insensitive...
Matches 151 - 200 out of 535 < 1 2 3 4 5 6 7 8 9 10 11 >