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8184723 |
Feedback system and apparatus for video compensation
A system and apparatus for compensating cable losses in a video signal transmission system includes feedback circuits to determine the spectral attenuation of a received signal and to control an...
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8165192 |
Waveform equalizer
Tap coefficients of an FIR filter are prevented from converging to wrong values. A waveform equalizer for performing waveform equalization of an input signal and outputting a waveform equalization...
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8155179 |
Adaptive cable equalizer
An adaptive cable equalizer includes a data signal input unit, a clock signal input unit, a variable equalizer that inputs a data signal input from the data signal input unit, and a transition time...
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8150070 |
Sound signal equalizer for adjusting gain at different frequency bands
A bass and treble audio tone control circuit configured as an integrated circuit, wherein a capacitor for setting a frequency band can be accommodated in an integrated circuit. A LPF extracts a low...
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8120442 |
Semiconductor device
A semiconductor device includes transmission lines for conveying signals and transition detectors, each of which checks whether a transmission signal on each of the plurality of transmission lines...
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8081676 |
Method and apparatus for data reception
Method and apparatus for data reception are provided, retrieving digital values transmitted through a cable. In a data receiver, an equalizer equalizes an input signal based on a boost value to...
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8064510 |
Analog encoder based slicer
A method and an apparatus for slicing an analog signal using an analog encoder.
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8059706 |
Method and system for transmission and/or reception of signals utilizing a delay circuit and DDFS
Aspects of a method and system for transmission and/or reception of signals utilizing a delay circuit and a DDFS are provided. In this regard, a first signal may be delayed by 90°, via a plurality ...
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8054876 |
Active delay line
A delay line for deployment in an equalizer to insert a delay in a signal received by the delay line employs a plurality of cascaded delay stages where the delay per stage provided by an active...
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8054873 |
Joint phased training of equalizer and echo canceller
A method and apparatus for joint training of an analog equalizer (AEQ) and an analog echo canceller (AEC) is described. In one embodiment, which both the AEQ and AEC process an input analog signal...
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8040943 |
Least mean square (LMS) engine for multilevel signal
A method and an apparatus for slicing a multilevel analog signal using a two-level slicer having one threshold level to generate an analog error signal. The method may be performed by delaying a...
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8031763 |
Automatic tuning circuit for a continuous-time equalizer
Embodiments of the invention are generally directed to systems, methods, and apparatuses for an automatic tuning circuit for a continuous-time equalizer (CTE). In some embodiments, the automatic...
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8009728 |
Parallel equalizer for DS-CDMA UWB system and method thereof
A parallel equalizer for a DS-CDMA UWB system and method thereof are provided. The parallel equalizer includes: a filter block for filtering a training input signal in a ‘training mode’, and fil...
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7991078 |
Signal processing apparatus, signal processing method, and program
In a signal processing apparatus adapted to process a signal transmitted via a transmission path, distortion of a waveform of a signal value of a specific symbol is predicted on the basis of a...
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7978757 |
Configurable receiver and a method for configuring a receiver
A configurable receiver and a method for configuring a receiver, the method includes: (i) evaluating multiple nonzero taps allocations, wherein each nonzero taps allocation evaluation includes:...
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RE42291 |
System and method for processing digital visual interface communication data signals and display data channel communication signals over a transmission line
A digital communication system for transmitting and receiving Digital Visual Interface (DVI) communication data signals and Display Data Channel (DDC) communication signals over a transmission line...
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7855611 |
Delay line calibration
A tunable delay line is calibrated to maintain the delay of the delay line at a desired value or within a desired range of values. In some aspects a signal is passed through a delay line multiple...
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7852951 |
Multicarrier receiver for multiple-input multiple-output wireless communication systems and method
Embodiments of a multicarrier receiver and method for generating soft bits in a multiple-input multiple-output system are generally described herein. In some embodiments, operational parameters for...
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7848400 |
Retransmission of reordered/coded data in response to presumed receiver decoding failure
A method having enhanced decoding operations associated with receiving multiple Radio Frequency (RF) Burst(s) is provided. Multiple RF burst(s) are received where the multiple RF Burst(s) include...
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7826522 |
Automatic calibration circuit for a continuous-time equalizer
Embodiments of the invention are generally directed to systems, methods, and apparatuses for an automatic calibration circuit for a continuous-time equalizer (CTE). In some embodiments, the...
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7804893 |
Feedback of reinterleaved correctly decoded data block to decoder for use in additional channel decoding operations of channel coded word containing data block
The feedback of reinterleaved correctly decoded data blocks to a decoder is provided for use in channel decoding operations of channel coded word containing data block. Once a properly decoded data...
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7801209 |
Variable tap length equalizers and related digital receivers, methods and computer program products
Equalizers are provided including an N-tap feed forward filter, an M-tap feed backward filter, an L-tap filter, a control unit and an accumulator. The control unit is configured to connect the...
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7795991 |
Integrated circuit arrangement to set a phase difference
An integrated circuit arrangement (1; 2; 3; 4) for setting a predefined phase difference (phi_target) between a first high-frequency signal (x1; x1p, x1n) and a second high-frequency signal (x2;...
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7738547 |
Method and apparatus for improved high-speed adaptive equalization
A method and apparatus for improved high-speed adaptive equalization that may operate effectively even in systems experiencing severe interference by using one or more error generators and taking...
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7697603 |
Methods and apparatus for equalization in high-speed backplane data communication
Equalization circuitry that includes an analog equalizer and a decision feedback equalizer (DFE) is provided for high-speed backplane data communication. The analog equalizer reduces the number of...
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7696838 |
Equalizing filter circuit
In an equalizing filter circuit having an input terminal 101, an output terminal 102, delay devices 104 connected in multi-stage to the input terminal 101, and a plurality of weighting circuits 105...
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7683732 |
Continuously adjustable equalizer
There is disclosed a continuously variable equalizer. The continuously variable equalizer may include a series-tuned circuit connected between an RF signal input terminal and an RF signal output...
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7671694 |
Programmable passive equalizer
Embodiments of a programmable passive equalizer are described herein.
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7668238 |
Method and apparatus for a high speed decision feedback equalizer
A method and apparatus for advantageously utilizing the reset state of an RTZ shift register to guarantee proper data alignment at the feedback taps to facilitate decision feedback equalization...
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7656939 |
Adaptive equalizer with passive and active stages
An equalizer may use a passive input stage to improve linearity and reduce power consumption. In addition, the equalizer may use two gain circuits, one in a high frequency amplification path and...
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7577193 |
Adaptive equalizer
Some embodiments of the invention include apparatus, systems, and methods to adjust a clock generator and an equalizer to reduce jitter in an output signal. A phase detector provides feedback...
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7545859 |
Adaptive channel equalization technique and method for wideband passive digital receivers
An adaptive channel equalization technique and method for wideband passive receivers is disclosed that reduces and tends to minimize distortions caused by circuitry within passive digital...
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7535816 |
Waveform equalizer and information reproducing apparatus therewith
A waveform equalizer includes: a calculation circuit (7a) that permits free setting of the boost factor by which the gain, in a predetermined frequency range, for the input signal by varying the...
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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...
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7504906 |
Method for manufacturing an equalizer
A method for manufacturing an equalizer. The method first acquires a transmission line scattering-parameter, and a gain of the transmission line scattering-parameter at a frequency 1πτ, in which...
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7492817 |
Adaptive digital filter
An adaptive digital filter includes a filtering circuit and a coefficient renewal circuit. The filtering circuit has a coefficient a defined by a fundamental formula:...
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7453932 |
Test device and setting method
A testing apparatus for testing a device under test is provided, wherein the testing apparatus includes: a comparator for receiving a signal output from the device under test and converting the...
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7446622 |
Transmission line with low dispersive properties and its application in equalization
A transmission line is provided with added shunt resistance, RSH, distributed along the length of the micro transmission line permitting the extension of constant characteristic impedance to the...
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7443913 |
High speed decision feedback equalizer
An equalizer comprises a sampler, a filter, and a summer. The sampler samples a signal indicative of an input communication signal to determine digital decision output signals having a...
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7440035 |
Cable extending device
Attenuation compensation volume computing means (60, 61, 62, 63, 67, 68, 69, 70) of a signal receiver computes attenuation compensation volume of a video signal (GL, GH) on the basis of attenuation...
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7424053 |
Channel equalization in data receivers
Channel equalization in a 1000BASE-T receiver is performed by a fixed mode analog filter 2 suitable for the longest possible cable length, by a FFE (3), and by a digital filter 4. The digital...
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7369607 |
Multicarrier communication using a time domain equalizing filter
Various methods and apparatus are described that use a filter. A receiver may be configured to receive multi-tone signals. The receiver has a Time Domain Equalizer filter employing an algorithm to...
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7312833 |
Channel equalizing apparatus and method for digital television receiver
Disclosed is a channel equalizing apparatus and method for a digital television receiver that performs channel equalization using equalizing algorithms. The channel equalizing apparatus includes a...
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7301997 |
Method and apparatus for improved high-speed adaptive equalization
A method and apparatus for improved high-speed adaptive equalization that may operate effectively even in systems experiencing severe interference by using one or more error generators and taking...
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7298207 |
Automatic gain control for a multi-stage gain system
Systems and methods are disclosed for providing automatic gain control of a multi-stage system. A method can include defining at least one parameter that is adapted to at least one of maximize...
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7289557 |
Adaptive equalization using a conditional update sign-sign least mean square algorithm
An adaptive equalizer finite impulse response (FIR) filter for high-speed communication channels with modest complexity, where the filter is iteratively updated during a training sequence by a...
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7289007 |
Temperature compensated variable tilt equalizer
A temperature compensated variable tilt equalizer configured to operate over a defined frequency range. The equalizer includes an RF input, an automatic temperature compensation circuit and a...
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7283586 |
Adaptive equalizer matched filter error metric concept and apparatus
A correlative error detection system (60) for a signal equalizer (10) that corrects a distorted communications signal. The detection system (60) correlates a sequence of bits in a signal from an...
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7272187 |
Filter circuit and radio apparatus
A distributor 103 distributes an input signal into two lines of distributed signals with equal amplitudes and equal phases. Buffers 104, 105 suppress interference between distributed signals...
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7254171 |
Equaliser for digital communications systems and method of equalisation
Equalisation of a communication channel is achieved through use of a Wiener filter frequency response mechanism that operates to transform at least a portion of a data stream generated from a...
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