| Patent Number |
Title Of Patent |
Date Issued |
| 7433399 |
Method and apparatus for generating coefficients in continuous time equalizers |
October 7, 2008 |
| Systems and methods are disclosed to adaptively generate coefficients for continuous time least mean square error equalizers and to correct offset in high-gain amplifiers. An adaptive coefficient generator includes a bank of individual coefficient generators, each utilizing a first a |
| 7394849 |
Decision feedback equalizer with dynamic feedback control |
July 1, 2008 |
| A decision feedback equalizer with dynamic feedback control for use in an adaptive signal equalizer. Timing within the decision feedback loop is dynamically controlled to optimize recovery of the data signal by the output signal slicer. The dynamic timing is controlled by a signal formed |
| 7379495 |
Adaptive signal latency control for communications systems signals |
May 27, 2008 |
| An apparatus and method for adaptively introducing a compensating signal latency related to a signal latency of a data symbol decision circuit. Adaptive timing control circuitry, including an interpolating mixer implemented as a tapped delay line with correlated tap coefficients, int |
| 7352225 |
DC offset reduction circuit and method |
April 1, 2008 |
| A circuit and method for reducing the DC offset in a signal produced by the mixing of two AC signals. |
| 7339988 |
Channel monitoring and identification and performance monitoring in a flexible high speed signal |
March 4, 2008 |
| Systems and methods are disclosed to provide channel monitoring and/or performance monitoring for a communication channel. For example, in accordance with an embodiment of the present invention, an equalizer is disclosed that equalizes for channel distortions and also provides channe |
| 7327204 |
Analog delay chain having more uniformly distributed capacitive loads and analog delay cell for |
February 5, 2008 |
| A tapped delay chain comprises a plurality of delay cells where each cell has at least two output taps: a primary one for feeding forward a delayed signal to a next cell in the chain, and a secondary output tap for feeding a slightly-differently delayed signal to a multiplier unit so |
| 7302461 |
Analog delay elements |
November 27, 2007 |
| 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 filter, which may provide a desired magnitude and group delay response over a wide frequency r |
| 7266145 |
Adaptive signal equalizer with adaptive error timing and precursor/postcursor configuration cont |
September 4, 2007 |
| An adaptive signal equalizer with a feedforward filter in which the feedback error signal and corresponding incoming data signal are dynamically aligned in time using signal interpolation, and further, to control the precursor/postcursor filter taps configuration, thereby producing m |
| 7265623 |
Differential amplifier having independently tunable base gain, peak gain and boost frequency, an |
September 4, 2007 |
| A waveform shaping method comprises: (a) receiving link-distorted signal pulses; (b) passing the link-distorted signal pulses through a series of differential amplifiers each have independently tunable, base gains, peak boost gains, boost frequencies and boost bandwidths; and (c) adjusti |
| 7203233 |
Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced fe |
April 10, 2007 |
| An adaptive coefficient signal generator for use in an adaptive signal equalizer with fractionally-spaced feedback. The signals representing the feedback tap coefficients are generated in conjunction with a timing interpolation parameter such that the fractionally-spaced feedback cir |
| 7170349 |
Low voltage broadband gain cell |
January 30, 2007 |
| T-coil structures are used in one embodiment to inject programmably-variable amounts of transistor biasing currents into the respective drains of current sinking transistor means of a broadband differential amplifier such that, when the differential amplifier is in common mode, total |
| 7170274 |
Trimmable bandgap voltage reference |
January 30, 2007 |
| A bandgap reference includes a current source providing a current that is proportional to the sum of a first voltage having a positive-to-absolute-temperature (PTAT) temperature dependency and a second voltage having a complementary-to-absolute-temperature (CTAT) dependency. The band |
| 7130366 |
Compensation circuit and method for reducing intersymbol interference products caused by signal |
October 31, 2006 |
| A compensation circuit and method for reducing ISI products within an electrical data signal corresponding to a detected data signal received via a signal transmission medium introduces distinct compensation effects for individual ISI products within the electrical data signal. Distinct |
| 7120193 |
Decision feedback equalizer with dynamic feedback control |
October 10, 2006 |
| A decision feedback equalizer with dynamic feedback control for use in an adaptive signal equalizer. Timing within the decision feedback loop is dynamically controlled to optimize recovery of the data signal by the output signal slicer. |
| 7078969 |
Analog signal interpolation |
July 18, 2006 |
| A linear interpolator is provided that includes differential pairs of transistors biased such that a first input voltage may be multiplied by a factor r wherein 0.ltoreq.r.ltoreq.1 and such that a second input voltage may be multiplied by the complement factor (1-r). By combining the |
| 7061978 |
Compensation method for reducing intersymbol interference products caused by signal transmission |
June 13, 2006 |
| In accordance with the presently claimed invention, compensation for reducing ISI products within an electrical data signal corresponding to a detected data signal received via a signal transmission medium introduces distinct compensation effects for individual ISI products within the |
| 7053688 |
Constrained coefficient adaptation for continuous-time equalizers |
May 30, 2006 |
| A low-voltage constrained coefficient adaptation and multiplication is provided. To provide the constrained coefficient adaptation, an adder adds an adaptive differential control voltage to a forcing differential control voltage to provide an effective coefficient. The adder is confi |
| 7039104 |
Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced fe |
May 2, 2006 |
| An adaptive coefficient signal generator for use in an adaptive signal equalizer with fractionally-spaced feedback. The signals representing the feedback tap coefficients are generated in conjunction with a timing interpolation parameter such that the fractionally-spaced feedback cir |
| 7035330 |
Decision feedback equalizer with dynamic feedback control |
April 25, 2006 |
| A decision feedback equalizer with dynamic feedback control for use in an adaptive signal equalizer. Timing within the decision feedback loop is dynamically controlled to optimize recovery of the data signal by the output signal slicer. The dynamic timing is controlled by a signal formed |
| 7031383 |
Compensation circuit for reducing intersymbol interference products caused by signal transmissio |
April 18, 2006 |
| A compensation circuit for reducing intersymbol interference (ISI) products within an electrical data signal corresponding to a detected data signal received via a signal transmission medium provides for selective application of compensation to individual, discrete data signal compon |
| 7020402 |
Crosstalk compensation engine for reducing signal crosstalk effects within a data signal |
March 28, 2006 |
| A crosstalk compensation engine for reducing signal crosstalk effects within a data signal. Demultiplexed data signals corresponding to multiplexed data signals received via a signal transmission medium are processed to significantly reduce one or more signal crosstalk products relat |
| 6985036 |
Digitally controlled transconductance cell |
January 10, 2006 |
| A digitally controlled transconductance cell includes a differential transistor pair coupled to load elements (either passive or active with resistive or impedance loads) and a variable bias current source, where the transconductance or gain is digitally varied by changing the aspect |
| 6965337 |
Reference generator |
November 15, 2005 |
| Systems and methods are disclosed herein to provide reference generators. For example, in accordance with an embodiment of the present invention, a reference generator is provided for an electrical device, such as for example for an analog-to-digital converter. The reference generator ma |
| 6952132 |
Method and apparatus for automatic gain control |
October 4, 2005 |
| Systems and methods provide automatic gain control, such as by employing analog and digital techniques. For example, overall gain may be controlled through coarse and fine control signals provided to gain stages, with the overall gain monitored via a power detector circuit. |
| 6940898 |
Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced fe |
September 6, 2005 |
| An adaptive coefficient signal generator for use in an adaptive signal equalizer with fractionally-spaced feedback. The signals representing the feedback tap coefficients are generated in conjunction with a timing interpolation parameter such that the fractionally-spaced feedback cir |
| 6940386 |
Multi-layer symmetric inductor |
September 6, 2005 |
| An integrated circuit including a differentially excited symmetric microstrip inductor formed over multiple layers while maintaining both electrical and geometrical symmetry. |
| 6940352 |
Analog signal interpolation |
September 6, 2005 |
| A linear interpolator is provided that includes differential pairs of transistors biased such that a first input voltage may be multiplied by a factor r wherein 0.ltoreq.r.ltoreq.1 and such that a second input voltage may be multiplied by the complement factor (1-r). By combining the |
| 6922440 |
Adaptive signal latency control for communications systems signals |
July 26, 2005 |
| An apparatus and method for adaptively introducing a compensating signal latency related to a signal latency of a data symbol decision circuit. Adaptive timing control circuitry, including an interpolating mixer implemented as a tapped delay line with correlated tap coefficients, int |
