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Patent Searching and Data


Matches 851 - 900 out of 13,158

Document Document Title
WO/2000/057549A1
An analog-to-digital converter responsive to an analog signal converts the analog signal to a digital signal. A digital decimation filter, having an associated frequency response, is responsive to the digital signal for producing a decim...  
WO/2000/054142A2
The invention relates to a device for comparing data sequences. The device can be used especially for determining the channel impulse response in mobile radiotelephone systems by comparing a receive sequence (r(t)) with a pilot sequence ...  
WO/2000/051250A1
An integrated circuit (10) includes a reconfigurable FIR filter (14) which has an input port for receiving digital input signals and an output coupled to a coherent signal processor and coherent memory (26). The FIR filter (14) programma...  
WO/2000/046690A1
A baseline wander filter (BWF) with linear phase response for an ECG signal measuring system includes two cascaded box car FIR filters to estimate baseline wander. The cascaded box car filters form, in effect, a triangular FIR filter tha...  
WO1997042742A3
A transmitter is disclosed for transmitting a digital information signal having a specific first sampling frequency (fs1) via a transmission medium. The digital information signal is lowpass filtered (10) and down sampled (12) so as to o...  
WO/2000/041322A1
The invention relates to a circuit for a multi-standard communications terminal. For receiving radio signals (FS1, FS2), said circuit has a high frequency part (1) with a receiving mixer stage (2) and a signal processing circuit (3; 3') ...  
WO/2000/039926A1
A convolution method and apparatus of time domain convolving an input signal with a second signal is disclosed comprising the steps of: dividing the second signal into a series of segments; determining a magnitude envelope for each of th...  
WO/2000/039952A1
A digital data system (100) provides 1-D, 2-D and 3-D capability and multi-band channel capability. Improved filter banks are created by generating a filter bank having an analysis portion and synthesis portion and obtaining wavelet coef...  
WO/2000/039600A1
Observation of transient phenomena in an oversampled regime is implemented with a digital filter pre-charged with a list of pseudodata obtained by prepending one or more pseudodatums to the oversampled data to constitute an effective dat...  
WO/2000/036744A1
A low power programmable digital filter (10) adapted for use with a telecommunications system transceiver. The digital filter (10) includes a first finite impulse response filter section for receiving an input signal and having a first t...  
WO/2000/035087A1
A technique for resetting an HPF for improving its settling time in response to a sharp transition in its input signal, by rapid input and clocking through the HPF of new data samples after occurrence of the sharp transition. The new dat...  
WO/2000/031875A1
The present invention relates to a method for compensating the phase delays occurring during the time-discrete sampling of an analog output signal (U¿S?), wherein said output signal (U¿S?) is submitted to a signal processing through an...  
WO/2000/031879A1
The invention relates to a circuit configuration for quantisation of digital signals and for filtering quantisation noise. Said circuit configuration comprises a multitude of digital control loops connected in series and having quantiser...  
WO/2000/030107A1
In order to provide a PLL circuit constituted of only one digital loop filter and adapted to multiple reproduction channel rates, when the channel rate of the reproduced signal reproduced by a reproducing device (1) changes at a rate whi...  
WO/2000/028662A1
The invention concerns a digital filter with parallel architecture and a spread-spectrum signal receiver using such a filter. The filter comprises p shift registers (R?p¿, R?i¿) with means for working out a weighted sum of the samples ...  
WO/2000/025304A1
A perceptual weighting device for producing a perceptually weighted signal in response to a wideband signal comprises a signal preemphasis filter, a synthesis filter claculator, and a perceptual weighting filter. The signal preemphasis f...  
WO/2000/025298A1
An improved pitch search method and device for digitally encoding a wideband signal, in particular but not exclusively a speech signal, in view of transmitting, or storing, and synthesizing this wideband sound signal. The new method and ...  
WO/2000/025305A1
In a method and device for recovering the high frequency content of a wideband signal previously down-sampled during encoding, and for injecting, during decoding, this high frequency content in an over-sampled synthesized version of the ...  
WO/2000/025303A1
The present invention relates to a method and device for enhancing periodicity of an excitation signal produced in relation to a pitch codevector and an innovative codevector for supplying a signal synthesis filter in view of producing a...  
WO/2000/024118A1
Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtere...  
WO/2000/024122A1
A multichannel polyphase filter (304, 602) includes a processing system (204, 506) for accepting and processing M input channels of data, each sampled at an input sampling rate, wherein M is a positive integer greater than unity. The pro...  
WO/2000/024125A1
The present invention relates generally to the problem of filtering, decimation or interpolation and frequency conversion in the digital domain, and more particularly to the use of the stand-alone or improved modified fast convolution al...  
WO/2000/022729A1
The invention relates to area efficient realization of coefficient block [A] or architecture [A] with hardware sharing techniques and optimizations applied to this block. The block [A] is connected to coefficient lines CLin_0, CLin_1.......  
WO/2000/022728A1
The invention relates to area efficient realization of coefficient block [A] or architecture [A] with hardware sharing techniques and optimizations applied to this block. The block [A] is connected to coefficient lines CLin_0, CLin_1...C...  
WO/2000/019654A1
The present invention seeks to enhance the modified fast convolution algorithm in order to increase the flexibility of the algorithm. In an exemplary embodiment of the present invention, a folding unit is introduced as a pre-processing s...  
WO/2000/019675A1
The invention relates to a digital receiver for a signal generated with discrete multi-tone modulation, having an analog-digital converter to which the signal generated with discrete multi-tone modulation is fed, in addition to a time do...  
WO/2000/013359A1
A transmitter generates a synchronization pattern comprising a sequence generated by arranging a predetermined basic pattern made up of a combination of a predetermined number of symbols and an inversion basic pattern made up of symbols ...  
WO2000002315A3
According to the invention: a) coefficients h1(n) of a prototype of the selective filter having a characteristic frequency fc for a given sampling frequency fa are predetermined or calculated; b) coefficients h2(t) of a selective filter ...  
WO/2000/009596A1
A method for producing a coated polymeric article by co-extruding polypropylene and a maleic anhydride modified polypropylene, corona-treating, and applying a polysilicate barrier is described. Also provided are films and bottles produce...  
WO/2000/008836A1
The invention concerns a device for processing digital data comprising a module (M2, M3) producing on a data vector of the frequency domain Z(k), wherein k varies from 0 to N-1, a convolution with a function U, convolution which correspo...  
WO/2000/008756A1
Digital filtering is performed by receiving an L-bit block of 1-bit data samples, wherein L is greater than 1, and using the L-bit block of 1-bit data samples to select a corresponding one of 2?L¿ filter ouptut values. Selection may be ...  
WO/2000/007298A1
The invention concerns a method for producing a Nyquist digital filter with null interference between symbols, designed to process a physical signal transmitted between a transmitter and a receiver via a transmission channel, said filter...  
WO1999056427A3
A sample rate converter for converting the sampling frequency of an input signal from a first frequency to a second frequency. Such a sample rate converter uses interpolation means and a phase locked loop receiving the first and the seco...  
WO/2000/002315A2
According to the invention: a) coefficients h1(n) of a prototype of the selective filter having a characteristic frequency fc for a given sampling frequency fa are predetermined or calculated; b) coefficients h2(t) of a selective filter ...  
WO/2000/002311A1
The invention relates to a non recursive digital filter whose coefficients can be modified for adapting the frequency response from a characteristic frequency fc1 to another characteristic frequency fc2. It also relates to a method for c...  
WO/1999/066424A1
A data interpolation method capable of reducing an operation volume without the occurrence of a truncation error. Each of four step function generators (10-1 to 10-4) generates a preset step function. Multipliers (12-1 to 12-4) each mult...  
WO1999044286A3
A digital filter (1) has a filter cell (4a) for generating processed data. The digital filter cell includes plurality of coefficient registers (14) which are arranged to circulate a plurality of coefficient values that correspond to a pl...  
WO/1999/060940A1
An interpolator (40) having a linear response has a first stage implemented with an IIR filter (42) to achieve the narrow transition bandwidth with relatively few filter coefficients. Zero-stuffing and filtering are used to achieve the i...  
WO/1999/060701A1
Method and device for filtering a digital signal with the aid of an Mth order finite impulse response filtering with a fractional delay d which is a fraction of the sampling period associated with the digital signal, in order to obtain a...  
WO/1999/056427A2
A sample rate converter for converting the sampling frequency of an input signal from a first frequency to a second frequency. Such a sample rate converter uses interpolation means and a phase locked loop receiving the first and the seco...  
WO/1999/054997A1
The invention relates to a method for converting the scanning rate during the transfer of a scanned signal from a first system (SYS 1) with a first scanning rate (f1) to a second system (SYS 2) with a second scanning rate (f2). According...  
WO/1999/054996A1
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 used by each of the plurality of filter c...  
WO/1999/050758A1
A decimation filtering circuit (300) for performing a decimation operation with a decimation factor of M in a pipeline structure. A finite impulse response ('FIR') filtering of N taps for achieving a desired frequency response is designe...  
WO/1999/050960A1
An improved method and apparatus for audio filtering is disclosed. The method provides a means for complex filtering of audio signals using a transversal filter structure (5) in which the delayed signals are successively filtered to allo...  
WO/1999/049574A1
A method of processing a series of input audio signals representing a series of virtual audio sound sources placed at predetermined positions around a listener to produce a reduced set of audio output signals for playback over speaker de...  
WO1999038257A3
A decimating time discrete filter comprises transform means (2) for transforming a real valued input signal (i) into a complex signal (u) represented by its real part Re{u} and its imaginary part Im{u}. The output signal (u) is down samp...  
WO1999039440A3
The device for processing a digital signal comprises an input (10) for receiving the digital signal and an output (18) for supplying an output signal. The device further comprises filter means (14) coupled to the output (18) for deriving...  
WO/1999/045644A1
The present invention relates to nonlinear systems and methods of design thereof in the frequency domain. Typically, conventional linear filter design involves attenuating signals at frequencies which are not of interest and dissipating ...  
WO/1999/045651A1
The invention relates to a device for signal processing in time discrete values for signal scanning systems such as digital analog converters, switched capacitor filters, direct digital synthesizers, sample and hold circuits and the like...  
WO/1999/045645A1
In digital video, 3:4 up conversion and 4:3 down conversion are transparently cascaded. The up conversion filter is: S¿up?(n)=$g(S)S¿input?(k) . g(3n - 4k) and the down conversion filter is: S¿down?(n)=$g(S)S¿up?(k) . h(4n - 3k). The...  

Matches 851 - 900 out of 13,158