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Browse by Category: Main > Communications
Class Information
Number: 375/236
Name: Pulse or digital communications > Equalizers > Automatic > Adaptive > Accumulator or up/down counter
Description: Subject matter including either a device which stores a number and which, on receipt of another number, adds the two and stores the sum, or a counter with the capability of counting in an ascending or descending order.


Patents under this class:
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Patent Number Title Of Patent Date Issued
7613238 Apparatus and method for decision error compensation in an adaptive equalizer Nov. 3, 2009
7596175 Methods and circuits for performing margining tests in the presence of a decision feedback equalizer Sep. 29, 2009
7593483 Nonlinear mapping in digital-to-analog and analog-to-digital converters Sep. 22, 2009
7590175 DFE margin test methods and circuits that decouple sample and feedback timing Sep. 15, 2009
7567642 Phase detector with extended linear operating range Jul. 28, 2009
7542508 Continuous-time decision feedback equalizer Jun. 2, 2009
7526021 Telecommunications transmission systems Apr. 28, 2009
7526019 Method and system for providing multi-channel multimode QAM equalization and carrier recovery Apr. 28, 2009
7508870 Method and apparatus for channel estimation in radio systems by MMSE-based recursive filtering Mar. 24, 2009
7505536 Energy dispersal circuit and receiver Mar. 17, 2009
7502411 Method and circuit for adaptive equalization of multiple signals in response to a control signal generated from one of the equalized signals Mar. 10, 2009
7463682 Coding method for binary digits coding and its circuit for digits transmission Dec. 9, 2008
7453932 Test device and setting method Nov. 18, 2008
7443909 Weighted autocorrelation method for downlink CDMA LMMSE equalizers Oct. 28, 2008
7433418 Method and apparatus for efficient storage of training sequences for peak to average power constrained modulation formats Oct. 7, 2008
7386240 Dispersion compensation in optical systems Jun. 10, 2008
7340657 On-chip high-speed serial data analyzers, systems, and associated methods Mar. 4, 2008
7130341 Feed forward equalizer controlled by FEC correction rates Oct. 31, 2006
6947481 Code enhanced equalization based upon a reliability factor Sep. 20, 2005
6940898 Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced feedback Sep. 6, 2005
6920333 Decision feedback equalizer with embedded coherent signal combiner Jul. 19, 2005
6738420 Digital filter having an upsampler operational at a fractional clock rate May. 18, 2004
6674795 System, device and method for time-domain equalizer training using an auto-regressive moving average model Jan. 6, 2004
6587504 Adaptive equalizer and designing method thereof Jul. 1, 2003
6549088 Frequency adjustable multipole resonant waveguide load structure Apr. 15, 2003
6498789 CDMA mobile communications device Dec. 24, 2002
6222876 Detecting valid data patterns for adapting equalization gain and offset for data transmissions Apr. 24, 2001
6167080 Control loop for adaptive equalization of a data signal Dec. 26, 2000
6047026 Method and apparatus for automatic equalization of very high frequency multilevel and baseband codes using a high speed analog decision feedback equalizer Apr. 4, 2000
5970094 Adaptive equalizer employing filter input circuit in a circular structure Oct. 19, 1999
5768311 Interpolation system for fixed sample rate signal processing Jun. 16, 1998
5530721 Equalizer and terminal device for mobile communications Jun. 25, 1996
5422909 Method and apparatus for multi-phase component downconversion Jun. 6, 1995
5331663 Decision-feedback equalizer capable of producing an equalized signal at a high speed without a remaining fading Jul. 19, 1994
5307375 Two stage accumulator for use in updating coefficients Apr. 26, 1994
5150380 Receiver capable of removing both intersymbol interference and frequency offset Sep. 22, 1992
5105440 Method and apparatus for adaptive equalization of pulse signals Apr. 14, 1992
5005185 Parallel mode adaptive transversal equalizer for high-speed digital communications system Apr. 2, 1991
4979184 Automatic equalizer initialization time control for multipoint networks Dec. 18, 1990
4791390 MSE variable step adaptive filter Dec. 13, 1988
4716577 Autoequalizer Dec. 29, 1987
4635276 Asynchronous and non-data decision directed equalizer adjustment Jan. 6, 1987
4580275 Adaptive equalizer for binary signals and method of operating same Apr. 1, 1986
4559635 Auto-adaptive amplitude-equalizing arrangement for digital radio links Dec. 17, 1985
4500999 Line equalizer Feb. 19, 1985
4459698 Variable equalizer Jul. 10, 1984
4438521 Automatically adaptive transversal filter Mar. 20, 1984
4349889 Non-recursive filter having adjustable step-size for each iteration Sep. 14, 1982
4344177 Equalizer comprised of equalizer sections which include internal accumulation circuits Aug. 10, 1982
4334313 Timing recovery technique Jun. 8, 1982

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