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Patent Searching and Data


Matches 201 - 250 out of 13,092

Document Document Title
WO/2013/054484A1
The present invention provides an audio signal output device and an audio signal output method, whereby favorable high-frequency signal interpolation can be achieved. The audio signal output device and the audio signal output method usin...  
WO/2013/050494A1
An apparatus and method for creation of reordered vectors from sequential input data for block based decimation, filtering, interpolation and matrix transposition using a memory circuit for a Single Instruction, Multiple Data (SIMD) Digi...  
WO/2013/049858A1
A new and more efficient filtering system (e.g., digital microphone decimation filter architecture system) is described. A key to this architecture is the use of two parallel filter paths. Each path operates at the output sample rate, an...  
WO/2013/033837A1
An RF circuit having a transcoupler, a multifunctional RF-circuit element that can operate both as an impedance inverter and as a signal coupler. When connected to a fixed load impedance, the transcoupler can also operate as an impedance...  
WO/2013/033836A1
A transmitter that uses a digital pre-distortion (DPD) circuit to mitigate the effects of nonlinearity of a multistage or multi-branch power amplifier. The DPD circuit relies on two or more feedback signals received from an RF-output cir...  
WO/2013/031083A1
This symmetric filter operation device (10) is provided with: a first data shuffling unit (161) that reads a first data string from a register file (140) and extracts a left-side data string from the first data string, said first data st...  
WO/2012/139737A4
The invention relates to a filter apparatus (100) having a signal input (101) to which an input signal is applied which contains a useful component and a noise component, a fast signal path (102) and a slow signal path (103) arranged in ...  
WO/2012/168926A2
Highly efficient digital domain sub-band based receivers and transmitters.  
WO/2012/163133A1
A finite impulse response (FIR) digital filter and an implementation method therefor. The filter comprises an extraction module (101), an impulse response module (104-107), and a processing module (110). The extraction module (101) is co...  
WO/2012/163281A1
Disclosed is an L order N times digital extracting filter, including a plurality of alternately cascaded accumulator groups and 2 times extractors, wherein L, N and M are natural numbers, N = 2M, an output signal of the 2 times extractor...  
WO/2012/163121A1
Provided in the present invention are a method and device for digital filtering. The method comprises: performing an edge extraction on an input signal requiring an FIR filtering to acquire a step signal; reading unit step responses from...  
WO/2012/157427A1
A digital filter circuit whereby a filtering process for a plurality of channels having different sampling rates is performed with a reduced circuit size, comprises delay circuits divided into a first to mth delay device groups, a proces...  
WO/2012/153221A1
A spectrum agile radio having one or more variable digital filters is described. To quickly, yet accurately, retune the digital filter(s) a windowing function is applied to an ideal filter characteristic for each of one or more desired f...  
WO/2012/150942A1
A method of frequency-domain filtering is provided that includes a plurality of filters, the plurality of filters including at least one constrained filter(s) W j =I, I and at least one unconstrained filter(s) W k =1,K- The method includ...  
WO/2012/142703A1
The invention provides a digital active EMI filter that removes, minimizes, or reduces unwanted interference (i.e., EMI noise) generated by a power circuit such as, for example, a power converter. Digital active filtering includes digita...  
WO/2012/139737A1
The invention relates to a filter apparatus (100) having a signal input (101) to which an input signal is applied which contains a useful component and a noise component, a fast signal path (102) and a slow signal path (103) arranged in ...  
WO/2012/131831A1
An A/D conversion unit (64) samples a first analog signal corresponding to the in-phase component at a first sampling rate to generate a first digital signal, as well as samples a second analog signal corresponding to the quadrature comp...  
WO/2012/123676A1
The present invention relates to a method and device (1) for filtering digital audio signals (x) using at least one ARMA filter (h1, h2), particularly during a filter change. The method according to the invention includes the following s...  
WO/2012/118483A1
A filter and method for filtering a signal are disclosed. The filter is equivalent to a plurality of bi-quad filters connected in series, and is implemented on a digital processor that receives a sequence of signal values at a sampling r...  
WO/2012/112706A1
One feature includes a method for implementing a fixed point recursive filter that reduces or eliminates steady state error. The method comprises obtaining a first filter state value, processing the first filter state value to remove a s...  
WO/2012/101382A2
The invention relates to a weighting filter to be used in a device for transmitting and/or receiving an analog signal, capable of transmitting and/or receiving said analog signal in a predetermined frequency band consisting of two adjace...  
WO/2012/102258A1
The objective of the present invention is operability at a higher speed. The present invention is provided with (FIG. 1): a weighted summing circuit (an adder (21) and coefficient multipliers (Tap 1a, Tap 2 to Tap n)) for adding an input...  
WO/2012/089140A1
The present invention provides a selection method and device for the pre-stored filter coefficient sets of a time-varying system, the selection method employing a two-time selection method, first selecting a set of filter coefficients to...  
WO/2012/086262A1
[Objective] To provide a digital filter circuit and a digital filter control method capable of reducing circuit scale and power consumption for filter processing in the frequency domain of the overlap FDE method. [Solution] The digital f...  
WO/2012/083464A1
An N-path filter with each path forming a different filter. A signal insertion block is provided at the start of the circuit and, in one embodiment, multiple memory capacitors are coupled to the signal insertion block. A bank of sequenti...  
WO/2012/079776A1
The present invention relates to an active band stop filter comprising a filter input and a filter output which are linked by a transmission line LT, a resonator RE coupled to the transmission line and connectable to a load impedance for...  
WO/2012/076689A1
The present document relates to the design of anti-aliasing and/or anti-imaging filters for resamplers using rational resampling factors. In particular, the present document relates to a method for designing such filters having a reduced...  
WO/2012/039575A3
The present invention relates to a bandpass sampling receiver, comprising: an analog-digital converter which converts a wireless analog signal to a digital baseband signal; and a complex baseband signal extraction unit which generates a ...  
WO/2012/055974A1
There is described a method of making a linear periodically time varying system shift-invariant, comprising the following steps implemented for each input signal the sampling rate of which has to be converted: - generating a set of polyp...  
WO/2012/052807A1
Various techniques are generally described for digital signal processing (DSP) such as discrete time filters. In some examples, a Canonic Filter Module (CFM) can be used to configure the discrete time filter using an LSF-Model with a fin...  
WO/2012/050267A1
Disclosed herein is a digital re-sampling apparatus. The digital re-sampling apparatus includes a sample buffer, a sample buffer control unit, a filter bank, a first delay bank, a fractional delay constant table, a combiner bank, and a s...  
WO/2012/046033A1
A method of processing an input audio signal, the method comprising forming a plurality of output audio signals from the input audio signal, wherein each output audio signal is formed by performing respective processing on the input audi...  
WO/2012/039061A1
In the present invention, for an input signal with overlapping ringing, a ringing generation filter (12) generates a ringing approximation waveform from only the peak signal portion preceding ringing so as to decrease the ringing approxi...  
WO/2012/040029A1
A method and apparatus of mitigating multipath coupling interference in a wireless repeater system 10 includes measuring an error signal E(z) in a signal path 14, 15 of the repeater 10 which contains the desired communication signals 15,...  
WO/2012/039575A2
The present invention relates to a bandpass sampling receiver, comprising: an analog-digital converter which converts a wireless analog signal to a digital baseband signal; and a complex baseband signal extraction unit which generates a ...  
WO/2012/028897A1
The present invention relates to a rate change filter having multiple branches. The multi- branch rate change filter of the present invention achieves higher effective output rates by processing the input sample stream in two or more par...  
WO/2012/029613A1
In order to solve the problem of realizing high precision compensation of distortion, a digital filter device is provided with: a first distortion compensation filter unit for compensating for a first waveform distortion included in an i...  
WO/2012/026417A1
The invention provides a demultiplexing device in which the circuit scale can be reduced. The device comprises: a demultiplexing signal selector/distributor (130) for subjecting one or more reception signals to frequency conversion and d...  
WO/2012/018093A1
A sound processing unit (112) is provided with: an equalizer part (1121) which causes n biquadratic filters having individual characteristics to act sequentially on a sound signal; an estimating part (1124) which estimates the magnitude ...  
WO/2012/012963A1
A device and method for converting digital sampling rate is provided in the present invention. When a first sampling period is greater than a second sampling period, the multiple phase filter in the device is used to control a first swit...  
WO/2011/105879A3
A frequency reconfigurable digital filter and an equalizer using the same are disclosed. The digital filter includes a sampling kernel storage section configured to store a sampling kernel for performing upsampling of a model filter resp...  
WO/2011/105880A3
Disclosed is a digital filter having improved attenuation characteristics. The disclosed filter applies a sampling kernel which is scaled by a sampling constant to perform an upsampling process for a model filter response. The disclosed ...  
WO/2011/153263A1
A system, method, and apparatus is disclosed for interpolation of an output of an analog to digital converter (ADC) (402) to enable operation of the ADC (402) at a sampling rate that is independent of the sampling rate for a DSP core (40...  
WO/2011/106651A3
Disclosed are methods and apparatus for sampling rate conversion in a wireless transceiver. The methods and apparatus achieve agile setting of sampling rates or resampling by adaptively setting a sampling rate of a signal based on at lea...  
WO/2011/123026A1
A method for linear filtering of noise in a sensorgram generated from a surface plasmon resonance apparatus, the method comprising: providing a linear filter of variable length to filter an output signal in the sensorgram; and determinin...  
WO/2010/071519A8
In one aspect, the invention provides a method of filtering an input signal x(k) (using an FIR filter or other filter) to produce an output signal y(k) such that the ratio of a power level of the output signal (e.g., an average power lev...  
WO/2011/106936A1
The invention relates to a filter device for filtering an input signal, the input signal comprising a clock signal having a clock frequency. The filter device comprises a filter (101) for filtering the input signal with a first set of fi...  
WO/2011/106651A2
Disclosed are methods and apparatus for sampling rate conversion in a wireless transceiver. The methods and apparatus achieve agile setting of sampling rates or resampling by adaptively setting a sampling rate of a signal based on at lea...  
WO/2011/105880A2
Disclosed is a digital filter having improved attenuation characteristics. The disclosed filter applies a sampling kernel which is scaled by a sampling constant to perform an upsampling process for a model filter response. The disclosed ...  
WO/2011/105879A2
A frequency reconfigurable digital filter and an equalizer using the same are disclosed. The digital filter includes a sampling kernel storage section configured to store a sampling kernel for performing upsampling of a model filter resp...  

Matches 201 - 250 out of 13,092