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Patent Searching and Data


Matches 401 - 450 out of 13,091

Document Document Title
WO/2007/084687A1
The sample rate of a digital signal is converted by a digital simulation of an analog filter. The simulation can update the states of complex poles in the analog filter at arbitrary times using different techniques. One technique updates...  
WO/2007/084259A2
A method is provided for decimating a digital signal by a factor of M and matching it to a desired channel bandwidth. The method applies the digital signal input samples to a (M-I) stage tapped delay line, downsamples the input samples a...  
WO/2007/079097A2
A digital to analog converter (DAC) includes a first continuous-time stage that receives an input signal associated with a digital signal and performs continuous-time digital-to-analog conversion operations on the input signal. The first...  
WO/2007/042994A3
To reduce chip size and lower cost by using a method of multiplexing a device to filter a plurality of signals, the present invention provides an apparatus for filtering the plurality of signals, comprising: a group of storage units, for...  
WO2007053086A8
An apparatus for reducing a digital filter delay includes means (10) for determining the magnitude response of a desired filter. Means (12, 14, 16) form the real cepstrum of this magnitude response. Means (18) transform the real cepstrum...  
WO/2007/069369A1
It is intended to expand the bit number of information signals and to prevent the information at that time from degradation. For this intention, a signal from an input terminal (1) is fed through predetermined delay means (2) to a variab...  
WO/2007/069652A1
Provided is a digital filter for radio communication processing capable of dynamically modifying the characteristic and simultaneously processing a plurality of systems. In the digital filter, calculation core groups (1010-1017) capable ...  
WO/2007/065269A1
A CMOS hybrid analog-digital receiver core where filtering and gain functions are implemented in the digital domain. The analog portion of the receiver core includes standard circuits such as a low noise amplifier for receiving an RF inp...  
WO/2007/063745A1
A radio receiver including a reception processing system that uses a discrete-time frequency conversion to acquire a signal having a sampling rate corresponding to a local frequency, wherein the reception characteristic is improved when ...  
WO/2007/013036A3
A FIR filter (20) has a delay line comprising four delay elements (21a, 21 b, 21c, 21 d) for delaying a signal received at a filter input (22) and four multipliers (24a, 24b, 24c, 24d) for multiplying the delayed signals by respective pa...  
WO/2007/053086A1
An apparatus for reducing a digital filter delay includes means (10) for determining the magnitude response of a desired filter. Means (12, 14, 16) form the real cepstrum of this magnitude response. Means (18) transform the real cepstrum...  
WO/2006/108654A3
Standard video compression techniques apply motion-compensated prediction combined with transform coding of the prediction error. In the context of prediction with fractional-pel motion vector resolution it was shown, that aliasing compo...  
WO/2005/104354A3
A method of processing an input signal that includes an input variable is disclosed. The method comprises comparing the input variable to a set of ordered constants, determining the relative location of the input variable within a range ...  
WO/2007/044119A1
A sample rate converter includes a digital filter and control logic coupled to the digital filter. The digital filter is configured to receive an input data stream and to up convert the input data stream to produce an output data stream ...  
WO/2007/042994A2
To reduce chip size and lower cost by using a method of multiplexing a device to filter a plurality of signals, the present invention provides an apparatus for filtering the plurality of signals, comprising: a group of storage units, for...  
WO/2007/040216A1
In a mobile wireless communication system for transmitting/receiving spectrum-spread signals, there is provided a signal receiving apparatus wherein the circuit scale has been reduced so as to reduce the cost. The signal receiving appara...  
WO/2007/031594A1
The invention relates to power amplifiers having adjustable output impedance. A power amplifier according to the invention can be used, for example, for feeding a radio frequency transmission signal into an antenna of a mobile communicat...  
WO/2007/029130A1
In a signal processing arrangement, a digital-to-analog converter (DAC1) of the finite impulse response type converts a serial bitstream (BSL) into an analog output signal (AL). The digital-to-analog converter (DAC1) comprises at least t...  
WO/2007/029796A1
There is disclosed a band extending device generating a high-quality band extending signal without using a non-linear processing. The band extending device includes a baseband processing unit, an extended band processing unit, and a mixi...  
WO/2007/027616A2
A method of filtering one or more input signals, includes receiving one or more input signals, each having an input signal value. The method includes storing at least two instructions in a program memory to filter one or more of the inpu...  
WO/2007/013036A2
A FIR filter (20) has a delay line comprising four delay elements (21a, 21 b, 21c, 21 d) for delaying a signal received at a filter input (22) and four multipliers (24a, 24b, 24c, 24d) for multiplying the delayed signals by respective pa...  
WO/2007/010889A1
An adaptive digital filter includes: a filter unit having a plurality of multipliers (3360 to 336N-1) grouped into at least one multiplier and the other multipliers according to expectation values of filter coefficients and generating a ...  
WO/2007/010849A1
An adaptive digital filter includes: a filter unit for generating an output signal by convolution of an input signal and a filter coefficient for output: or a filter unit for inputting a complex signal having two signals generated from o...  
WO/2007/007471A1
Provided is a deemphasis circuit capable of setting deemphasis characteristics easily and setting more precise deemphasis characteristics. The deemphasis circuit comprises a first digital filter (2) for deemphasizing a digital input sign...  
WO2006096217A8
An efficient configurable signal filter (52). The filter (52) includes a first mechanism for receiving a first signal of a first type and a second signal of a second type. A second mechanism (60,62) selectively filters the first signal d...  
WO2004066501A3
A digital compression system including a superresonant filter, which adds samples of a digital data signal at a frequency to previous samples. The added samples are parts of sine or cosine waves, not the sum of the waves. The output sign...  
WO/2006/134688A1
There are included a three-tap FIR calculating part (2) that multiples data outputted from three taps on a tapped delay line by respective filter factors comprising a ratio value sequence of '-1, m, -1'; and an n-tap FIR calculating part...  
WO2006096217A3
An efficient configurable signal filter (52). The filter (52) includes a first mechanism for receiving a first signal of a first type and a second signal of a second type. A second mechanism (60,62) selectively filters the first signal d...  
WO/2006/108654A1
Standard video compression techniques apply motion-compensated prediction combined with transform coding of the prediction error. In the context of prediction with fractional-pel motion vector resolution it was shown, that aliasing compo...  
WO/2006/106713A1
In a discrete signal approximation system, even if an analysis filter has non-linear characteristic, it is possible to obtain an optimal approximate expression. A signal whose norm is below a predetermined value is assumed to be an origi...  
WO/2006/103246A1
A digital high-pass filter (12) has an input (IN), an output (OUT), and a subtractor stage (20), having a first input terminal, a second input terminal and an output terminal. The first input terminal of the subtractor stage (20) is conn...  
WO/2006/100967A1
A variable digital filter not producing transient response noise while operating. The filter comprises a subtractor (12) for detecting the difference between the input signal (X(z)) and a feedback signal (FB(z)), a &gammad -times multipl...  
WO/2006/096217A2
An efficient configurable signal filter (52). The filter (52) includes a first mechanism for receiving a first signal of a first type and a second signal of a second type. A second mechanism (60,62) selectively filters the first signal d...  
WO2005098731A3
The present invention provides systems and methods to use a measured driving-point response of a nonlinear material to determine one or more elastic properties of the material. The present invention takes advantage of the full informatio...  
WO/2006/077795A1
A sampling frequency converting apparatus capable of appropriately adjusting the sampling frequency to provide an improved function. There are included a digital filter (5) that performs a digital filtering of a digital signal as an inte...  
WO/2006/074870A1
The invention relates to a controller for generation of control signals (evload_o, odload_o, st_chgclk_o, clk_o, clk_or_fiford_i), synchronous with a continuously supplied clock signal (clk_hr_i) for a device (1) for control synchronousl...  
WO/2006/069743A1
Disclosed is a finite impulse response (FIR) decimation filter (1) that is used for reducing the sampling rate of an oversampled signal which is output by S? modulators (8), for example. According to the invention, the decimation factor ...  
WO2006055313A8  
WO/2006/068554A1
A non-linear processing device (1) is presented, in which fractional-delay filtering (20) - fractional as compared with a sample rate used in the processing steps - is used between successive processing steps (10). A corresponding method...  
WO/2006/068555A1
Non-linear signal conditioning is provided by signal processing in at least 2 consecutive steps (10). In each step (10) an insertion source signal (41) is provided, which is treated non-linearly to fulfil certain restrictions in bandwidt...  
WO/2006/068196A1
A convolutional calculation circuit for performing a convolutional calculation of given digital signals, comprising a data dividing part for generating a plurality of divided data obtained by dividing respective amplitude data of the dig...  
WO/2006/068278A1
The present invention provides an equalizer (200) and a method for computing equalizer filter coefficients in a communication receiver. The equalizer filter coefficients are computed on the basis of a real matrix T which is generated fro...  
WO/2006/064916A1
There is provided a digital filter of simple configuration. A signal transmission unit TRT switches between an input signal Din and an addition output signal Qe in a predetermined order in synchronization with a predetermined frequency f...  
WO/2006/062000A1
A digital filter realizes frequency characteristic equivalent to that obtained when n basic digital filters are connected in cascade by using a small-size and low-cost circuit. The digital filter includes adders, multipliers, and delay d...  
WO/2006/054717A1
[PROBLEMS] To provide an IIR type of digital filter having a simple structure. [MEANS FOR SOLVING PROBLEMS] An IIR type of digital filter (5) is constituted by a calculator (6) for adding a delay signal (D(z)) to an input signal (X(x)) a...  
WO/2006/055791A1
A technique for noise reduction in a wireless communication system uses controllable bandwidth filters (120) to filter a received signal. In a typical implementation, the filters (120) are used at baseband frequencies. A measurement (RSS...  
WO/2006/055313A2
A method is disclosed for providing a digital filter system for providing a low pass filter function to a digital input. The method includes the steps of determining a finite impulse response of the input, determining a transfer function...  
WO/2006/054479A1
There is provided a sound image localizer capable of realizing an optimal sound image localization effect according to a content of a content. The sound image localizer includes: filter coefficient storage means (3) for storing a filter ...  
WO/2006/053156A1
A sample rate converter reduces the sampling rate of a signal by a fractional number U/D, where U represents an up-sampling rate and D represents a down-sampling rate. The converter comprises an input for receiving an input data stream a...  
WO/2006/048958A1
An original filter having first filter coefficients where the numeral sequence is symmetrical and a regulation filter having second filter coefficients realizing reverse direction frequency amplitude characteristics B in contact with the...  

Matches 401 - 450 out of 13,091