| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 708319000 | Transversal | 8 |
| 20090164542 | METHOD FOR CALCULATING COEFFICIENTS OF FILTER AND METHOD FOR FILTERING - 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 cepstrum technique to obtain coefficients of denominator function from the filter. In other words, the invention adopts a non-iterative algorithm to reduce computational complexity and avoid convergence due to calculating coefficients. Besides, the specific function of the invention includes a compensation function, so that a Fourier transform with greatly reduced size can be utilized in the spectral factorization to greatly save the computations and keep good system performance at a receiver. | 06-25-2009 |
| 20090198754 | Order adaptive finite impulse response filter and operating method thereof - A device for allocating a number of taps of a designated finite impulse response filter is disclosed. The device comprises a plurality of designated finite impulse response filters having fixed number of taps, a plurality of allocation finite impulse response filters having fixed number of taps, a control unit and an estimate unit. Depending on intensities of responses to interferences, at least one of the allocation FIR filters may be coupled in series to any one of the designated finite impulse response filters, thereby to provide a signal having excellent quality. | 08-06-2009 |
| 20090198755 | SCALED SIGNAL PROCESSING ELEMENTS FOR REDUCED FILTER TAP NOISE - An adaptive transversal filter having tap weights W | 08-06-2009 |
| 20100241681 | FILTERING METHOD AND APPARATUS OF LOW COMPLEXITY FIR FILTER, AND RECORDING MEDIUM THEREOF - A filter method and an apparatus of a low complexity Finite Impulse Response (FIR) filter, and a recording medium thereof are provided. A filtering method of the low complexity FIR filter includes filtering input signals using 2N-ary filters by dividing 2N-ary filter coefficients into even filter coefficients and odd filter coefficients; filtering using a (2N+1)-th filter and the input signals; and adding up a filtering result of the 2N-ary filters and a filtering result of the (2N+1)-th filter. Hence, by reducing the computations of the FIR filter, the FIR filter with the optimal performance can be realized. | 09-23-2010 |
| 20100262640 | HIGH-SPEED CONTINUOUS-TIME FIR FILTER - A high-speed continuous-time FIR (finite impulse response) filter comprises a plurality of processing cells configured in a cascade topology. Each processing cell receives a first signal and a second signal from a preceding circuit and a succeeding circuit, respectively, and outputs a third signal and a fourth signal to the succeeding circuit and the preceding circuit, respectively. Each processing cell further comprises a delay cell and a summing cell. Each of the delay cell and the summing cell performs a high speed signal processing using a combination of a feedback loop and a feedforward path. | 10-14-2010 |
| 20110022650 | DIGITAL OPTIMAL FILTER FOR PERIODICALLY ALTERNATING SIGNALS - A digital optimal filter having an especially sinusoidal pulse response uses a filter structure with a recursive and a transversal portion. The transversal portion comprises filter coefficients for the representation of scan results of half a period of the sinusoidal pulse response signal. The recursive filter structure is used to change the sign after generation of the scan results for half a period and to mark the start and the end of the pulse response. A plurality of periods can lie in between the start and the end of the pulse response, this is why the digital optimal filter can be used to extract especially sinusoidal burst signals from an original signal, namely in digital technology, which is advantageous for the implementation of IC's. | 01-27-2011 |
| 20120096061 | ADAPTIVE FILTER - An adaptive filter configured to filter an input signal comprises Fourier transforming unit configured to transform the input signal into a frequency domain signal upon the basis of the Fourier transform, weighting unit configured to weight at least a portion of the frequency domain signal with a filter coefficient of the dispersion filter in frequency domain to obtain a filtered signal in frequency domain, correlating unit configured to correlate the filtered signal in frequency domain to obtain a correlation value, and adaptation unit configured to adapt the filter coefficient upon the basis of the correlation value. | 04-19-2012 |
| 20130173678 | MULTI-STAGE ADAPTIVE FILTER - A multi-stage adaptive filter is disclosed, which exhibits a smaller mean square error than in prior art adaptive filters. The adaptive filter selectively manipulates the weights, in multiple stages, so as to achieve a global minimum of the error function, such that the filtered signal has as small an error as possible. | 07-04-2013 |
