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JP5018499B2 |
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JP5016501B2 |
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JP5020474B2 |
FIR filters are divided into partial filters that filter a same portion of image data to generate partial filtered results. The partial filtered results may be saved and later retrieved to generate complete filter outputs.
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JP5014312B2 |
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JP5014708B2 |
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JP2012161061A |
To reduce control circuits for changing a filtering time.A digital filter circuit 1 includes a sampling circuit 11, an EXOR circuit 12, a clock gating circuit 18, a reset control circuit 13, a counter circuit 14, a filter time setting ci...
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JP2012160907A |
To provide a digital filter that reduces a processing load.A sampling section 1 samples a serial digital signal. Buffers B0-B15 hold sampling values of the digital signal over a plurality of recent cycles. Coefficient signal output secti...
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JP2012151865A |
To filter noisy estimates to reduce estimation errors.Input samples y(k) from a receiver are sent to a channel estimator 310 and to a data finite impulse response (FIR) filter 360. Within the channel estimator 310, an initial channel est...
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JP2012147133A |
To provide a sampling rate conversion device and a sampling rate conversion method capable of reducing memory capacity for storing a filter coefficient required for interpolation and realizing sampling rate conversion by a package with a...
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JP4989575B2 |
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JP4982080B2 |
A digital filter is provided for radio communication processing capable of dynamically modifying the characteristic and simultaneously processing a plurality of systems. In the digital filter, calculation core groups capable of modifying...
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JP4983858B2 |
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JP4973029B2 |
To achieve circuit scale reduction and power saving in a receiving apparatus for processing a digital baseband signal resulting from demodulating a reception signal using a digital finite impulse response filter. A receiving apparatus 1 ...
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JP2012515509A |
Certain aspects of the present disclosure provide methods for distributed sensing and centralized reconstruction of two correlated signals, modeled as the input and output of an unknown sparse filtering operation.
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JP4968850B2 |
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JP4957194B2 |
A decimation filter has: a plurality of calculating devices each having a multiplier and an accumulator; a plurality of coefficient memories (a ring memory and shift registers) which store filter coefficients, and which correspond to the...
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JP4950801B2 |
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JP4950119B2 |
To provide an audio processing device and an audio processing method that enable reproduction of discrete data with good sound quality according to user preferences. In an audio processing part 3, discrete data are divided into a low-ban...
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JP4945955B2 |
A method determines tap coefficients of a phase interpolation finite impulse response (FIR) filter with respect to a digital-signal phase-locked loop processing apparatus including an A/D converter receiving a reproduced signal serving a...
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JP4948927B2 |
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JP4940347B1 |
According to one embodiment, a compensation filtering device includes an impulse response calculator, a coefficient calculator, and an adder. The impulse response calculator calculates an impulse response of a reproduction system compris...
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JP4934298B2 |
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JP4929134B2 |
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JP2012085177A |
To provide a high accuracy decimator circuit that has a small circuit scale and operates fast.The decimator circuit includes a plurality of multiply-accumulate circuits 1 and a coefficient memory 2 for giving coefficients of multiplicati...
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JP4914188B2 |
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JP4915587B2 |
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JP4908554B2 |
The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502),...
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JP2012060245A |
To provide a median filter circuit capable of realizing median filters in a plurality of sizes by a single circuit, and easily and properly correcting even the pixels at the end part of a picture data.The median filter circuit includes k...
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JP4901112B2 |
An apparatus includes a delta-sigma analog-to-digital converter for digitalizing an analog input signal. The DELTA - SIGMA ADC includes an analog band-pass loop filter 20 configured to filter an analog signal derived from the analog inpu...
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JP4901416B2 |
A digital filter device that filters a digital sound signal input to an input terminal and outputs an output digital signal from an output terminal, has a peak value controlling circuit compares a first gain multiplier value and a second...
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JP2012049954A |
To reduce latency of sampling frequency conversion and frequency fluctuation of data after conversion.A 1/L down sampler 3 stores data from a pre-stage, interpolates data when a write request signal is generated from the prescribed numbe...
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JP2012506195A |
A transceiver having a multistage channel filter for a wireless communication system is disclosed. The transceiver is composed of a transmitter unit including a multistage channel filter module to perform channel filtering on an input si...
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JP4890259B2 |
A spectrum analyzer is described which comprises a mixer for mixing the conjugate complex input signal v*(t) into a base band signal x(t), and a resolution filter for narrow-band filtering the base band signal. The resolution filter has ...
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JP4892701B2 |
Processing an input signal that includes an input variable is disclosed. The input variable is compared to a set of ordered constants, the relative location of the input variable within a range of possible inputs is determined and a filt...
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JP4888207B2 |
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JP2012039232A |
To provide a signal processor for making the amount of noise generated in signal processing smaller than before even when it is provided as a signal processor including an inexpensive fixed point operation DSP.A sound processing section ...
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JP4876456B2 |
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JP2012502530A |
The invention provides a filtering device with hierarchical structure making it possible to carry out finite impulse response and infinite impulse response linear filtering functions and which can be combined with one or more devices of ...
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JP4862185B2 |
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JP4854826B2 |
Each filter processing element has a register of partial results equal to a number of different filters.
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JP4857699B2 |
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JP4857446B2 |
A system and a method are disclosed for converting analog signal to digital. An analog to digital converter system comprises an analog to digital converter (ADC) and an adaptive filter coupled to the ADC, wherein the adaptive filter is c...
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JP2012010332A |
To provide a semiconductor device, circuit, and AC and DC load switch for maintaining a small input-output differential voltage and providing a defined response.The load switch can include a pass element coupled to an input terminal and ...
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JP4850461B2 |
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JP4853343B2 |
The circuit has an adaptive filter (30) e.g. wiener filter, operating in an adaptive mode in which the filter is adapted to changes in a received electronic communication signal. The filter operates, in a non-adaptive mode, with a reduce...
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JP2012005060A |
To reduce a processing load of coefficient arithmetic operation processing when changing a cutoff frequency of a variable filter.A noise cancellation apparatus includes a variable low-pass filter and a variable phaser and uses the variab...
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JP2011259272A |
To use memory capacity efficiently.The digital filter comprises: a plurality of coefficient multipliers 30, 36, and 40 which multiply a predetermined coefficient to a signal; a plurality of delay devices 34 and 38 which delay a signal; a...
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JP2011259293A |
To provide a digital filter with excellent compatibility with an analog computing operation at the pre-stage of an analog section, which can form a notch at a noise position to an output from the analog section and can improve noise remo...
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JP4843078B2 |
A vehicle computer system has an audio entertainment system implemented in a logic unit and audio digital signal processor (DSP) independent from the host CPU. The audio entertainment system employs a set of ping/pong buffers and direct ...
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JPWO2010001562A1 |
It provides a technique for changing the number of taps for filtering without requiring branching. The filter processing device (151) holds an arithmetic unit that performs arithmetic processing for filtering, data used for arithmetic pr...
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