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Patent Searching and Data


Matches 801 - 850 out of 13,091

Document Document Title
WO/2001/028092A1
The present invention relates to an interpolation method and an interpolation apparatus for a digital audio signal or a digital image signal that has a predetermined sampling cycle and quantization bit length, and in particular, to an in...  
WO/2001/028118A1
The invention relates to a matched filter (6-10) for implementing the correlation of an input signal (6-21) and a reference signal (6-27). The matched filter (6-10) according to the invention comprises N parallel M-sample long shift regi...  
WO/2001/025731A2
The present invention relates to a method for weighing items and in particular to a method of filtering signals representing the weight of an item. The invention is applicable in all measuring instruments which indicate an average value ...  
WO/2001/026316A1
Serial signals generated by A/D conversion at a rate twice the modulation rate are so subjected to S/P conversion that the data ratio is 1:2 to generate a pair of data signals parallel in modulation rate. For demodulation, the parallel p...  
WO/2001/026224A1
A spread spectrum modulated signal generator is disclosed that reduces the storage requirement for storing values representing filter responses of input signal samples in a digital filter by taking advantage of time-reversal symmetry of ...  
WO/2001/022582A1
A circuit arrangement and method utilize a programmable shifter (48, 88) coupled downstream of a multiplier (36, 86) to shift the product of an input value and a pre-scaled filter coefficient that implements a predetermined filter functi...  
WO/2001/019304A1
A cochlear implant comprising a storage buffer in which sampling values derived from a sound signal are saved. The storage buffer is connected to a multichannel waveform generator, in which data for a stimulation strategy are saved. Read...  
WO/2001/018960A1
A digital convolution apparatus, includes means (12) for determining a real-valued discrete-frequency representation of a desired digital filter and means (14) for transforming said discrete-frequency representation into a corresponding ...  
WO/2001/018961A1
A digital filter design apparatus for noise suppression by spectral subtraction includes a first spectrum estimator (12) for determining a high frequency-resolution noisy speech power spectral density estimate from a noisy speech signal ...  
WO/2001/017108A1
The invention relates to a filter unit, comprising a decimator (2), core filter (1) and an interpolator (3). According to the invention, the sampling rate is decreased by a fractional sampling rate modification factor L/M, prior to the c...  
WO/2001/016620A1
The invention is an automatic pole-zero adjustment circuit for an ionizing radiation spectroscopy system in which an amplitude histogram circuit (56) is used to obtain an amplitude histogram of an acquired spectrum. The shape of a select...  
WO/2001/016934A1
In a digital audio signal processing apparatus for karaoke systems, echo cancellation and like applications, a digital delay line (10) is connected to receive an input audio signal (DRY) and has a plurality of outputs, each at a respecti...  
WO/2001/015320A1
A transversal filter for suppression of interfering signals in broadband communication systems is described. The filter has only one variable filter coefficient, A = f(a), while the coefficient in the last path always is equal to 1. a = ...  
WO/2001/013515A1
A digital filter is provided for high quality playback of a recorded audio signal. The filter is designed in the frequency domain by establishing a base point and a series of principal points at uniform frequency intervals. The principal...  
WO/2001/009760A1
Disclosed herein are a method, apparatus and computer usable medium for linear filtering with filters of any desired shape and length using the wavelet transform as the computation engine by modifying the basis functions. Specifically, t...  
WO/2001/010024A1
Disclosed is a circuit for converting chronologically discrete scanning rate signals which are fed to a scanning rate signal converter, which, after application of an approximation procedure, is used to convert feed input signals to outp...  
WO/2001/008313A1
A low pass digital filter (180) using cascade polyphase recursive digital signal processing circuit. The filter in the receive direction may contain a re-sampling Hogenauer filter (220) followed by an equalizer filter (230) to correct fo...  
WO/2001/008306A1
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 over several levels of decomposition, the...  
WO/2001/006671A1
The invention concerns a method for synchronising mobile telephone receivers in a mobile telephone system, which consists in using a first synchronising channel having a first frequency and via which a known code for all the mobile telep...  
WO/2001/005032A1
In a wireless telecommunications system, data processing delays associated with digital channelization and de-channelization may be reduced through the use of a technique that involves processing data blocks in conjunction with the trans...  
WO/2001/003295A1
The invention relates to a novel FIR filter for an AD converter according to a method contained in patent application DE 4333908. Said method is based on non equidistant signal scanning and requires a special digital FIR decimation filte...  
WO/2001/003294A1
A technique for correlating a sequence of signal sample values with a predetermined digital code to produce correlation values for shifts in the sequence of signal sample values relative to the predetermined digital code is disclosed. Th...  
WO/2001/003293A1
A technique for correlating a stream of signal sample values with a predetermined binary code having a plurality of binary code bits is disclosed. The technique is realized by forming precombinations of groups of the signal sample values...  
WO/2001/001570A1
The invention relates to a programmable digital bandpass filter for a codec circuit to adapt the filtering properties of the codec circuit to a transmitted PCM signal. Said filter comprises at least one programmable digital highpass filt...  
WO/2000/079686A1
A digital-analog converting device and method for lowering the computational complexity and decreasing the circuit scale, and data interpolating device and method. The digital-analog converting device has a fundamental digital waveform g...  
WO/2000/074438A2
A digital hearing aid uses a digital filter using coefficient multipliers and with digital signal processing algorithms, which can be implemented with a minimum amount of dedicated circuitry, which may be contained in an integrated circu...  
WO/2000/068826A1
An interpolation circuit capable of performing interpolation operation with a simple constitution. A 16-times oversampling from discrete data is performed by D flip-flops (4, 5). A first convolution operation is performed by D flip-flops...  
WO/2000/067375A1
The invention relates to a comb filter system comprising an Nth-order integrator (10) on the input side, whose output signal is fed to at least three signal paths (20, 30, 40). Each signal path (20, 30, 40) is provided with a control dev...  
WO/2000/065713A2
Sample rate converters are known, and are used to convert a signal with a first sample rate (sampling frequency) into a signal with a second sample rate (sampling frequency). To obtain a flexible sample rate converter with sampling frequ...  
WO/2000/064049A1
The dually adjustable electromechanical handling means according to the invention has controlled circuit (30), a microcomputer (15) controlling the controlled circuit (30) and a displacement/digital signal transducer (12) with movable el...  
WO/2000/062421A1
A digital filter and a multiplication method are described, which lead to an efficient architecture for a hardware implementation of digital FIR and IIR filters into FPGAs. The multiplications of input sample data and delayed sample data...  
WO/2000/060738A1
A matched filter computes complex correlations between a sequence of complex input values and a complex code. The matched filter includes a set of N changeover switches (55) having a first input connected to receive real parts (Sr) of th...  
WO/2000/060739A1
A decimation filter includes a zero insertion filter (12) having an input and an output, wherein the input forms an input of the decimation filter; a cascade of four comb filters having a first accumulator stage (14-1) and a second stage...  
WO/2000/059111A1
Converters are used to convert a digital signal into an analogue signal or vice versa. In audio reproduction systems oversampled converters are used in combination with a digital upsampling low pass filter followed by either an analogue ...  
WO2000039952A8
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/2000/057549A1
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 ...  

Matches 801 - 850 out of 13,091