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7558814 Realization method of self-equalized multiple passband filter  
A realization method of a multiple passband filter that equalizes a group delay without using an external equalizer is disclosed. The realization method includes the steps of: a) calculating a...
RE40802 Digital frequency response compensator and arbitrary response generator system  
A digital signal processing system capable of compensating for frequency response variations and generating a response characteristic that complies with a provided specification. The system...
7545886 Method and apparatus for eye-opening based optimization  
An eye opening measurement technique, that does not interrupt a receiver's normal operation, is used as a metric for optimizing any selected parameters of the receiver's operation. If eye opening...
7542523 Pipeline architecture for multi-slot wireless link processing  
A wireless communication device processes N Radio Frequency (RF) bursts contained within N slots of a digital communications time divided frame, wherein N is a positive integer greater than one....
7543130 Digital signal processor for initializing a ram  
A digital signal processor is adapted to a working RAM, which is capable of storing a plurality of data in a rewritable manner and whose storage area is divided into a plurality of sub-areas that...
7529296 Adaptive equalization method and circuit for continuous run-time adaptation  
In some embodiments disclosed herein, equalizers in a receiver are adapted during normal operation, as they extract bit data from a received bit stream, to account for channel and/or circuit...
7528745 Digital domain sampling rate converter  
Techniques are described for sampling rate conversion in the digital domain by up-sampling and down-sampling a digital signal according to a selected intermediate sampling frequency. A prototype...
7526052 Configurable filter and receiver incorporating same  
An efficient configurable signal filter. The filter includes a first mechanism for receiving a first signal of a first type and a second signal of a second type. A second mechanism selectively...
7515662 Method for compensating for gain ripple and group delay characteristics of filter and receiving circuit embodying the same  
Embodiments of methods and apparatuses can compensate gain ripple and/or group delay characteristics of at least one filter, a receiving circuit embodying a filter, or a communication system...
7480689 Systolic de-multiplexed finite impulse response filter array architecture for linear and non-linear implementations  
Described is a finite impulse filter response (FIR) filter for use by signal processors. A demultiplexer receives input data samples at an input data rate. The FIR filter includes a plurality of...
7471747 Bit down-scaling apparatus and method, GPS synchronization acquisition method, and GPS receiver  
The n-to-m bit down-scaling correlates a plurality of n-bit correlation integral values into a plurality of m-bit data (n>m). The n-bit correlation integral values are obtained by correlating...
7467171 Digital filter device  
In a digital filter device which filters a plurality of signals by a single digital filter, an input data memory stores the input data strings generated by computing processors, and a digital...
7460983 Signal analysis system and calibration method  
A method and apparatus adapted to calibrate a signal path of a signal analysis system such that loading effects of the system are substantially removed from measurements of a device under test. A...
7447722 Low latency computation in real time utilizing a DSP processor  
A method for applying a computation utilizing a processor (112) capable of accessing an on-chip memory (114) and data from an off-chip source (116), the method comprising the iterative steps of...
7440988 System and method for dynamic weight processing  
A dynamic weight generator. The inventive generator includes a first memory for storing a PN code; a second memory for storing a plurality of weights, the second memory being coupled to the first...
7437393 Signal processing apparatus, non-integer divider, and fractional N-PLL synthesizer using the same  
Signal processing apparatus or non-integer divider with a small circuit scale and a fractional N-PLL synthesizer comprising same. An adder 2 and a delay device 4 constitute a 20-bit input...
7437392 Transitioning a filter function of a two-port lattice-form planar waveguide optical delay line circuit filter from a start filter function to a target filter function  
Optically coherent, two-port, serially cascaded-form optical delay line circuits can realize arbitrary signal processing functions identical to those of FIR digital filters with complex filter...
7433907 Signal analyzing method, signal synthesizing method of complex exponential modulation filter bank, program thereof and recording medium thereof  
Provided is a complex exponential modulation filter bank which can reduce quantity of arithmetic operation, and can realize low electric power consumption or speeding-up. This complex exponential...
7428468 Monitoring apparatus  
To provide a monitoring device which can detect conditions of a sleeping person reliably and which is simple. A monitoring device comprising: multiple independent distance sensors 11 installed...
7424501 Nonlinear filtering and deblocking applications utilizing SIMD sign and absolute value operations  
Nonlinear filtering and deblocking applications utilizing SIMD (single instruction multiple data) sign and absolute value operations are disclosed. The method of one embodiment includes receiving...
7415065 Adaptive filtering in the presence of multipath  
Adaptively analyzing an observed signal to estimate that part of the signal that best corresponds to a steering vector. Modifying the steering vector by convolution of the steering vector with a...
7415542 Micro-programmable filter engine having plurality of filter elements interconnected in chain configuration wherein engine supports multiple filters from filter elements  
A micro-programmable filter (MFE) engine includes multiple programmable filter elements and a microcode controller. The filter elements can be configured, controlled, and combined in different...
7412469 Power amplifier pre-distorter training  
A power amplifier pre-distorter is formed by a FIR filter structure which includes an individual look-up table for each filter tap, where each look-up table represents a sample polynomial in a...
7412470 Arithmetic processing apparatus  
The arithmetic processing apparatus of the present invention is an arithmetic processing apparatus that can be reconfigured in accordance with a processing mode and has a plurality of arranged...
7408485 Asynchronous sampling rate converter and method for audio DAC  
A sample rate converter suitable for use in an audio DAC includes a first estimating circuit (32A) generating first (TR) and second (STAMPR) signals synchronized to an asynchronous clock (MCLK)...
7405683 Extending the dynamic range in an energy measurement device  
An apparatus for measuring energy usage. The apparatus can include an amplifier having a plurality of gain stages and the amplifier can be for receiving an input signal. The apparatus can also...
7398288 Efficient implementation of a filter  
A Finite Impulse Response (FIR) filter is implemented in software on a general purpose processor in a manner which reduces the number of memory accesses as compared to conventional methods. In...
7394844 Code division multiple access employing orthogonal filter banks  
Wavelet filters computed from a wavelet transform are used for encoding, transmitting, receiving, and decoding spread spectrum signals on multiple parallel frequency channels. The transmitter...
7395290 Digital filter and method thereof using frequency translations  
A digital filter and method of filtering frequency translate or shift a spectrum of a digital input signal and further filter a translated signal to reduce or attenuate frequency components in the...
7388936 Digital data receiver for edge cellular standard with DC offset correction, channel impulse response estimation, I/Q phase imbalance compensation, interference estimation, and selective equalization  
A receiver unit includes a prefilter that receives as one of the inputs a channel impulse response (CIR) estimation data set and removes unnecessary data information from the CIR estimation data...
7386240 Dispersion compensation in optical systems  
In one aspect a system and method for providing a multi-port memory having a plurality of read ports, each read port including a filter coefficient value representing a dispersion compensation...
7379851 CDMA signal waveform quality display system, method, and program, and storage medium storing the program  
A signal power coefficient and a noise power coefficient are calculated for each channel, using parameters which have been optimized up to a small error value by an optimizing means, then using...
7378996 Sampling rate conversion calculating apparatus  
There provided is a low-cost, high performance sampling rate conversion calculating apparatus which achieves both a low delay characteristic required for conversational voice data and high quality...
7376201 System and method for reducing crest factor of signal  
A new system and method is developed for reducing the crest factor of a signal. The system includes a large signal extraction module for receiving the input signal and the magnitude of the input...
7376688 Wavelet multi-resolution waveforms  
A method for designing Wavelets for communications and radar which combines requirements for Wavelets and finite impulse response FIR filters including no excess bandwidth, linear performance...
7376689 Method and apparatus for reducing the crest factor of a signal  
A method and apparatus for reducing the crest factor of a signal uses a plurality of partial correction signals having respective predetermined frequencies. For each of the partial correction...
7373367 Efficient digital filter design tool for approximating an FIR filter with a low-order linear-phase IIR filter  
A method and apparatus for designing low-order linear-phase IIR filters is disclosed. Given an FIR filter, the method utilizes a new Krylov subspace projection method, called the rational Arnoldi...
7370180 Bit field extraction with sign or zero extend  
A method of controlling data processing logic which causes a data value to be rotated by a number of bits in order to generate a rotated data value; a number of least significant bits of the...
7366746 Finite impulse response filter method and apparatus  
Finite response filters (FIRs) 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...
7366747 Digital filter circuit and data processing method  
A digital filter circuit is capable of processing multi-channel data having different sampling frequencies. RAMs (random access memories) are provided which store data inputted thereto...
7362816 Inversion of channel distortion by adaptive wavelet lifting  
A method for inverting telecommunication channel distortion by adaptive wavelet lifting. The distortion signal is analyzed using wavelet lifting and the inverse filter is computed. Coefficients of...
7352911 Method for bilateral filtering of digital images  
A method for processing an image using a bilateral filter. The bilateral filter is reformulated at each pixel location in the image into a sum of the original signal value of a central pixel at...
7346137 Nonuniform oversampled filter banks for audio signal processing  
A non-uniform filter bank is created by joining sections of oversampled uniform filter bands that are based on complex exponential modulation (as opposed to cosine modulation). Each filter bank...
7346638 Filtering, equalization, and power estimation for enabling higher speed signal transmission  
A power spectrum estimator consistent with certain embodiments has a pulse extraction circuit that compares a digital input signal with a delayed version of the digital input signal to produce an...
7340019 Programmable filter  
Briefly, in accordance with one embodiment of the invention, a programmable filter may implement an infinite impulse response filter so that a transceiver in which the filter is utilized may be...
7333034 Data processing device, encoding device, encoding method, decoding device decoding method, and program  
The present invention relates to a data processing apparatus, a method and apparatus for encoding, a method and apparatus for decoding, and a program, that allow a reduction in an algorithm delay....
7319797 Adaptive filters and apparatus, methods, and systems for image processing  
An adaptive filter according to one embodiment includes an N×N two-dimensional convolution, where N is an odd integer greater than one. Pixels of an image are filtered by moving the N×N kernel...
7318079 Method and device for filtering a video signal  
A method and device operable per the method for high-pass filtering an input signal having a sequence of signal values to provide a high-pass filtered output signal having a sequence of filtered...
7315875 Data filtering  
A method, computer program product and data processing apparatus for filtering data, in particular for use in deblocking filters. The method comprising applying a plurality of m filter...
7304597 Adaptive interpolation for use in reducing signal spurs  
A method and apparatus for acquiring an analog signal. The method of the invention comprising the steps of acquiring a first portion of the analog signal by a first channel, the first portion of...