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Patent Searching and Data


Matches 601 - 650 out of 13,158

Document Document Title
WO/2004/027998A2
The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as...  
WO/2004/027980A1
An integrated demodulator and decimator circuit (700, 800) including a selective digital sign inverter (703, 803) and a decimator (705, 805). The sign inverter negates selected digital samples based on Weaver demodulation and outputs dem...  
WO2002047262A3
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 (II,V) to a certain accuracy and combining ...  
WO/2004/023781A2
A channelized filter design for partial band reconstruction having high dynamic range requirements. The analysis filter (505) and synthesis filter constraints of the present invention permit high performance signal detection with an alia...  
WO/2004/023075A1
An apparatus is described which reduces a time delay and a resultant phase shift in a gyroscope motor drive signal (90). The motor drive signal originates from a numerically controlled oscillator (32) whose output (60) is sampled at a pr...  
WO/2004/013964A2
A sample rate conversion system developed to implement a rate change of M7N using a very efficient design implementation. The sample rate conversion system of the present invention is implemented as a CIC-based interpolating sample rate ...  
WO2002067422A9
An N dimensional signal processor using D scale non-uniform sampling is disclosed. The processor includes a multi-resolution sampler (A) for outputting a stream of non-uniformly spaced samples resulting in an overall average sampling rat...  
WO/2004/013963A2
The invention relates to a data processing system for performing a polyphase filtering. This circuit comprises functional units (304, 305, 306) able to perform polyphase filterings, and a memory device (301, 302, 308) for storing data an...  
WO/2004/008637A1
According to a basic unit filter having a predetermined basic numeric string as a filter coefficient, a high-pass unit filter (H15) and a low-pass unit filter (L13) having pass ranges having a common center frequency Fc are created. Thes...  
WO/2004/008502A2
An RF generator is provided for use in an RF plasma system. The RF generator includes: a power source that is operable to generate RF power signals at a tuned frequency; a sensor unit that is adapted to detect the RF power signals and op...  
WO2002080098A3
Embodiments of a pyramid are described.  
WO2002060114A3
A multi-carrier filter for a wireless communications system employing a multi-carrier signal. The multi-carrier filter includes a first mechanism for receiving the multi-carrier signal and extracting carrier signal components A second me...  
WO/2004/006434A1
A frequency separating system is described utilising tuneable frequency shifting complex converters in which the centre frequency of the band extracted and the bandwidth extracted can be varied depending upon the parameters chosen by the...  
WO/2004/004264A1
A detector for detecting a signal to be measured which has been discretized by a predetermined discretization frequency. The detector includes an analysis signal converter for converting the signal to be measured into a an analysis signa...  
WO2003071683A3
Apparatus and methods are disclosed for treating an input set of weightless binary tuples to order the Hamming values thereof. In the general case, the tuples are thermometer coded in a common direction (left or right) and thereafter an ...  
WO/2003/001965A1
A programmable filter is provided for filtering image or texture map data. A weighting RAM stores weighting data for filtering data in both x and y directions. Different weighting values may be programmed into weighting RAMs to provide d...  
WO2004001965A1
A programmable filter is provided for filtering image or texture map data. A weighting RAM stores weighting data for filtering data in both x and y directions. Different weighting values may be programmed into weighting RAMs to provide d...  
WO/2003/107533A2
Disclosed is a method for digitally filtering K input values by means of a non-linear filter, wherein the filter produces an output value, the R biggest value, from the K input values (K ≥ R ≥ 1). The inventive method can be used to ...  
WO/2003/107528A2
The invention relates to circuit arrangements for generating an IQ voltage signal or current signal, consisting of an I part and of a Q part that is orthogonal thereto, said parts having approximately the same amplitudes. Said signal is ...  
WO/2003/107035A2
The invention relates to a method for the suppression of disturbances in systems for detecting objects in a target area, whereby a sequence of pulses is transmitted into the target area by at least one transmitter and the reflection sign...  
WO2003062964A3
The present invention is a method and system for extracting information from a received signal (Yi) with minimal loss due to noise. The system comprises of a transformer (12), for correlating the received signal to a wavelet function and...  
WO2002080363A9
Embodiments of a two-dimensional pyramid filter architecture are described.  
WO/2003/100782A1
A reproduced signal obtained by playing back a recording medium where digital signals have been recorded is inputted to an input terminal (1), quantized by an A/D converter (8), passed through an integrator (20) comprising a first-order ...  
WO/2003/101031A1
A subband channelizer that includes a demultiplexer that receives input samples of a signal and distributes the input samples to a plurality of channelizer filter banks. A Fourier transform module that receives outputs from the plurality...  
WO/2003/096534A1
A waveform of a desired frequency characteristic is input as a numeric value string and is subjected to reverse FFT so as to obtain a filter coefficient group. Thus, without having any expert knowledge, only by inputting a waveform of a ...  
WO2003019786A3
A digital down converter (100) is provided. The digital down converter (100) includes an input adapted (102) to receive an input signal (101), a mixer circuit (104) coupled to the input to down converter the input signal, and a decimatio...  
WO2003055195A3
An embodiment of the present invention is directed to a rate enhanced system for supporting duplex transmission of symmetric data rates. The system comprises an encoder comprising a serial to parallel converter for receiving a serial dat...  
WO2003063351A3
A method in a signal processor for filtering samples in a digital signal is provided. An approximate filtered sample is generated as a function of less than four samples of the digital signal. A correction is generated as a function of t...  
WO2003015270A3
The invention concerns a method for determining filtering coefficients of a modulated filter bank, based on a prototype filter of length L designed to produce a modulated system with M sub-bands, comprising the following steps: (a) deter...  
WO2002089061A3
Embodiments of a two-dimensional pyramid filter architecture are described.  
WO/2003/085830A1
A computationally efficient, adaptive multistage Wiener filter employs two modules, a linear filter module that operates at the input data rate and an update module that operates at a plurality of rates but performs many calculations at ...  
WO/2003/081774A1
An adaptive proportional integral control loop (209, 210) provides an accurate measurement of input ot output sampling rates for use in asynchronous sampling rate conversion. An input counter (200) counts inputs samples and its output is...  
WO2002069492A3
A highly-programmable Finite Impulse Response (FIR) digital filter overcomes the limitations of conventional configurations. Specifically, a compound FIR filter configuration is provided, offering the advantages of heightened programmabi...  
WO2003047091A3
A data processing circuit for a communication receiver comprises an input path (23), a control (27), a sign modifying module (29), first and second delay elements (31, 33), first and second multiplying means (35, 37) and a summing module...  
WO/2003/077419A1
An A/D conversion section (101) performs oversampling on an analog signal at a rate M times the symbol rate to convert into digital signals. A FIR filtering section (102) has two delay-element sequences each with a plurality of delay ele...  
WO/2003/077441A1
The invention generally relates to improved correlators for spread spectrum receivers, particularly for third generation (3G) mobile communications systems. A Golay correlator with a plurality of delay structures is described. At least o...  
WO2002047258A3
A filter (26) is used to average power values of a signal that has been subjected to varying gain. The gain is factorised into two factors, the first being the highest power of 2 within the gain, and the second being a factor which can b...  
WO2003015269A3
The invention relates to a method for generating a temporally discrete amplitude value sequence s[n], characterised in that a continuous signal r(t) is filtered and subsequently sampled using a period T. According to the method: - the co...  
WO/2003/073317A1
A digital signal processing system (1) capable of compensating for frequency response variations (5) and generating a response characteristic (8) that complies with a provided specification (14). The system automatically generates digita...  
WO/2003/071683A2
Apparatus and methods are disclosed for treating an input set of weightless binary tuples to order the Hamming values thereof. In the general case, the tuples are thermometer coded in a common direction (left or right) and thereafter an ...  
WO/2003/069499A1
A system and method are disclosed for analyzing an input signal (100) into a plurality of frequency components. In one embodiment, the input signal (100) is processed with a first set of low pass filters (102-132) to derive a first set o...  
WO/2003/065579A1
Methods and apparatus of signal processing are described. In a method according to one embodiment, a high−frequency region of a digital signal is detected. In response to the detecting, the high−frequency content of the digitized sig...  
WO/2003/063350A2
The invention relates to a digital signal filtering method, a frequency synthesiser and the corresponding computer programs. More specifically, the invention relates to a method of filtering an original digital signal which is represente...  
WO2003028327A3
A circular filtering system which prevents the problem of inter-symbol interference. The circular filtering system utilizes a buffer memory to store samples of a given symbol and provide only these samples to a linear filter such that th...  
WO/2003/063351A2
A method in a signal processor for filtering samples in a digital signal is provided. An approximate filtered sample is generated as a function of less than four samples of the digital signal. A correction is generated as a function of t...  
WO/2003/063346A2
The invention relates to a method of decreasing the dynamic range of a signal comprising the steps of:- determining a property of the signal,- determining a limitation parameter based on the property of the signal, - limiting the signal ...  
WO/2003/062964A2
The present invention is a method and system for extracting information from a received signal (Yi) with minimal loss due to noise. The system comprises of a transformer (12), for correlating the received signal to a wavelet function and...  
WO/2003/058814A1
One or more unit filters are prepared from basic unit filters having a predetermined basic numerical string h1 to h6 as filter coefficients. A digital filter is designed by combining these. Thus, by combining the unit filters, it is poss...  
WO/2003/054726A1
A decimation system and decimation circuit for decimating waveform data on an oscilloscope. The decimation circuit is implemented using sixteen parallel 16-to-1 multiplexers connected in parallel to a data bus which selectively captures ...  
WO/2003/055195A2
An embodiment of the present invention is directed to a rate enhanced system for supporting duplex transmission of symmetric data rates. The system comprises an encoder comprising a serial to parallel converter for receiving a serial dat...  

Matches 601 - 650 out of 13,158