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7616052 Fast adapting filter  
Adjustable gain circuits (AGCs) within serial filter stages are initialized to maximum gain. The output of each AGC is then sampled and converted to digital representation for use by control logic...
7610326 Arithmetic circuit for calculating a cumulative value as a result of parallel arithmetic processing  
An arithmetic circuit to calculate a cumulative value of results of parallel arithmetic processing, in which the increase of the circuit area for multiple-term arithmetic computation and the...
7596589 Time-mode analog computation circuits and methods  
A time-mode analog computation circuit is provided. The time-mode analog computation circuit includes one or more inputs for receiving one or more temporal input signals. The time-mode analog...
7587445 Complex multiplex feedback filter  
A complex filter includes an I channel having a first I channel output and a second I channel output and a Q channel having a first Q channel output and a second Q channel output. The second I...
7565393 Discrete time filter having gain for digital sampling receivers  
A discrete time filter achieves gain by sampling a signal using capacitors arranged in a one configuration and then changing the capacitors to a series configuration to develop a filter output...
7562108 High bandwidth high gain receiver equalizer  
A receiver equalizer with a first equalizer unit having a basic equalizer stage and a negative impedance cell connected to the basic equalizer stage. Preferably the negative impedance cell has a...
7539721 Analog filter with passive components for discrete time signals  
A filter intended to receive a discrete time signal at a sampling clock frequency, comprising a determined number, greater than 2, of filtering units, each filtering unit comprising head capacitors...
7499963 Complex filter with higher order pole  
Pairs of second-order filters with feedback and cross coupling may be used to implement pairs of complex poles. The cross coupling may be frequency-dependent cross coupling or frequency-independent...
7480603 Finite impulse response (FIR) filter compiler  
A method, apparatus and system for building a filter is disclosed. In a particular embodiment, the filter is a finite impulse response (FIR) filter and a compiler suitable for implementing the FIR...
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...
7418469 Method and apparatus for adaptive real-time signal conditioning, processing, analysis, quantification, comparison, and control  
Various components of the present invention are collectively designated as Adaptive Real-Time Embodiments for Multivariate Investigation of Signals (ARTEMIS). It is a method, processes, and...
7415495 Selective filter having linear phase  
A method for determining a filter that is very selective and having linear phase is described. The method starts with choosing a pole constellation in the complex frequency plane in a unique manner...
7352826 Analog delay circuit  
An analog delay circuit to impart a group delay to an analog input signal is described. The analog delay circuit may comprise a capacitor to impart at least a portion of the group delay to the...
7346645 Architecture for transverse-form analog finite-impulse-response filter  
A transverse form analog finite impulse response filter. The filter has an input and an output. A first set of passive delay elements connected in serial to the input, and a second set of passive...
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...
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...
7318081 Band-pass filter and tracking signal processor circuit  
A band-pass filter includes two operational amplifiers. The gm values of the operational amplifiers are each determined by a current flowing through a corresponding transistor for inducing flow of...
7317841 System and method for image noise reduction using a minimal error spatiotemporal recursive filter  
Certain embodiments of the present invention provide a system and method for reducing image noise with the use of a minimal error spatiotemporal recursive filter. An input image is filtered both...
7302461 Analog delay elements  
Systems and methods provide analog delay elements, which may be utilized in isolation or in a cascade. For example, a delay element may include a broadband amplifier and a passive, programmable...
7293057 Method and apparatus for cancelling inter-symbol interference (ISI) within a communication channel  
A decision feedback equalizer finite impulse response (DFE FIR) filter for cancelling inter-symbol interference within a signal transmitted through a communication channel. The DFE FIR filter...
7206341 System and method for providing equalization in a multiphase communications receiver  
A circuit and method for receiving digital signals are disclosed. The circuit includes an input connected to a communications channel over which a digital signal is communicated and operates a...
7188135 Analog adaptive FIR filter having independent coefficient sets for each filter tap  
A finite impulse response filter having tap weight rotation is provided, where each tap has a corresponding coefficient selector. Each coefficient selector includes N coefficients, where N is the...
7177895 Linear channel select filter  
A linear channel select filter for an Intermediate Frequency selector of a satellite broadcasting tuner, linearly changes a desired frequency by adjusting an output current, and includes: a...
7167517 Analog N-tap FIR receiver equalizer  
An equalizer includes plural samplers for sampling an incoming input data stream according to plural phases of a sampling clock, each sampler producing a data sample. Operating in the analog...
7167513 IQ imbalance correction  
An in-phase and guadrature (IQ) imbalance error-correction method includes estimating, on the basis of a constellation error in a received orthogonal frequency division multiplexing (OFDM) signal,...
7155469 Method of correcting physical impairments of a programmable filter  
In some embodiments of the present invention, a known input signal is fed to a programmable filter. The output of the filter is compared to a calculated desired output for the same or similar...
7127016 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...
7107306 Method and apparatus for adaptive real-time signal conditioning, processing, analysis, quantification, comparision, and control  
Various components of the present invention are collectively designated as Adaptive Real-Time Embodiments for Multivariate Investigation of Signals (ARTEMIS). It is a method, processes, and...
7085799 Analog filter suitable for smoothing a ΔΣ-modulated signal  
An analog filter includes a first arithmetic operation section 2 -1 having a plurality of sets of processing circuit being cascade connected, each processing circuit having an S/H circuit of...
7075363 Tuned continuous time delay FIR equalizer  
An analog finite impulse response (“FIR”) filter generates a continuous time output using a chain of tunable delay elements. The tunable delay elements generate a time delay in an input signal....
7051063 Integrated low power channel select filter having high dynamic range and bandwidth  
A channel select filter circuit is disclosed using a current-mode transconductance-capacitor (gm-C) architecture, which is tuned by digitally controlled capacitor arrays. The main filter includes...
7042935 Equalizer and equalization method  
An equalizer and an equalization method capable of suppressing distortion specific to radio unit and reducing both the oversampling number and the amount of calculations without causing...
7039476 Control system with filtered dead zone  
A method of operating a control device having a setpoint value, an error signal, and a control output is disclosed. The error signal is representative of a difference between a controlled variable...
7028070 High speed filter  
An electronic filter operates as a correlator that provides a discrete approximation of an analog signal. The analog to digital conversion is integrated directly approximation calculation. An array...
7024447 Time continuous FIR filter to implement a hilbert transform and corresponding filtering method  
A finite impulse response (FIR) filter for implementing a Hilbert transform is provided. The FIR filter includes a plurality of programmable delay cells connected in cascade between an input...
7016405 Signal circulation for adaptive signal equalization in digital communication systems  
A method and system for equalizing a signal transmitted via a channel of a communications system stores an input signal received via the channel in a main buffer. A training signal portion of the...
6976051 Complex multiple feedback filter  
A complex filter includes an I channel having a first I channel output and a second I channel output and a Q channel having a first Q channel output and a second Q channel output. The second I...
6961745 Filter for injecting data dependent jitter and level noise  
A filter for injecting data dependent jitter and level noise into a digital data signal with a given data rate reacts on a step function with a step response showing after a first increase or...
6954774 Bandpass filter with ability to tune a pass frequency, passband gain and filter Q  
A bandpass filter which has a tunable passband frequency and independently controllable Q and passband gain, where the filter employs a separate passband gain control which is summed with a gain...
6928111 Method and apparatus for controlling equalizer using sync signal in digital vestigial sideband system  
An equalizer is controlled using a sync signal in a digital vestigial sideband system is provided, in which the sync signal is accurately separated even though a ghost having a short delay time and...
6910060 Spatio-temporal filter and method  
A system, apparatus and methods are disclosed for the spatial and temporal processing of time dependant array data using analog signal processors. In one embodiment, a programmable array of...
6907090 Method and apparatus to recover data from pulses  
Methods and corresponding apparatus to recover data from a signal comprising groups of pulses generated in response to analog waveforms are described. Data recovery in accordance with the invention...
6854005 Crossover filter system and method  
A filter system including a low pass filter having a response which rolls off towards a crossover frequency and a high pass filter having a complementary response which rolls off towards the...
6817017 Universal interface system  
This invention provides a universal interface system that is capable of launching software applications across operating system platforms. For example, the universal interface system allows a...
6816621 Method for generating shift-invariant filters  
A novel method is presented for implementing a filter for processing a discrete signal having the steps of first obtaining a plurality of sample values from the discrete signal; then using each...
6795001 Analog FIR-filter with &Sgr &Dgr modulator and delay line  
An analog FIR-filter comprising an asynchronous ΣΔ modulator (AM) generating amplitude-discrete time-continuous pulses coupled to a sequence of delay cells (C 1 . . . C n ) for delaying the...
6778710 Method for generating increasing shift-invariant filters  
A novel method for implementing a filter for processing discrete signal image is presented having the steps of first obtaining a plurality of sample values from said discrete signal image and then...
6700521 Interpolating function generating apparatus and method, digital-analog converter, data interpolator, program, and record medium  
A digital input is 8-fold oversampled, delay circuits 11 −1 to 11 −4 and multipliers/adders 12 to 15 perform a convolution arithmetic while multipliers/adders 4 to 10 process the...
6668235 Identification of channels and associated signal information contributing to a portion of a composite eye diagram  
An eye diagram analyzer can assign a plurality of SUT data signals to be members of a labeled group of channels. There may be a plurality of such groups. The measured data for components within a...
6553398 Analog fir filter with parallel interleaved architecture  
An analog FIR filter that processes multiple output samples in parallel is disclosed. The simultaneous parallel processing of multiple samples permits improved sampling rate and improved accuracy...
Matches 1 - 50 out of 288 1 2 3 4 5 6 >