ClassID:

221061

H03H21/0043 - CPC Classification

Classification description:

Adaptive networks; Digital adaptive filters Adaptive algorithms

Sub-classes:
Recent Application in this class:
#1
20260143287
2026-05-21

HEARING DEVICE WITH MOTION SENSOR USED TO DETECT FEEDBACK PATH INSTABILITY

#2
20250293622
2025-09-18

SYSTEM AND METHODS FOR HIGH PERFORMANCE FILTERING TECHNIQUES FOR SENSORLESS DIRECT POSITION AND SPEED ESTIMATION

#3
20250148045
2025-05-08

SUBSPACE-CONSTRAINED PARTIAL UPDATE METHOD FOR REDUCED-COMPLEXITY MODE ESTIMATION IN HIGH-DIMENSIONAL DATA SETS

#4
20250141433
2025-05-01

Forgetful Bloom Filter Structure

#5
20240298121
2024-09-05

HEARING DEVICE WITH MOTION SENSOR USED TO DETECT FEEDBACK PATH INSTABILITY

#6
20240186852
2024-06-06

Permanent-magnet fault-tolerant in-wheel motor based on active sensorless strategy and drive and design methods thereof

#7
20240095301
2024-03-21

Subspace-constrained partial-update methods for reduced-complexity mode estimation in high-dimensional data sets

#8
20230387842
2023-11-30

System and methods for high performance filtering techniques for sensorless direct position and speed estimation

#9
20230155526
2023-05-18

SUBSAMPLING ACTIVE GATE DRIVER FEEDBACK

#10
20220255480
2022-08-11

Systems and methods for high performance filtering techniques for sensorless direct position and speed estimation

#11
20210297022
2021-09-23

Active gate driver with feedback

#12
20210141855
2021-05-13

Subspace-constrained partial update methods for reduced-complexity signal estimation, parameter estimation, or data dimensionality reduction

#13
20200411029
2020-12-31

Method and device for updating coefficient vector of finite impulse response filter

#14
20200313656
2020-10-01

Method and apparatus for adaptive signal processing

#15
20200177117
2020-06-04

Systems and methods for high performance filtering techniques for sensorless direct position and speed estimation

#16
20200067550
2020-02-27

Method for cancelling multi-path signals for frequency-modulated radio signal receiver

#17
20190348939
2019-11-14

Apparatus for reducing belt slip

#18
20190325891
2019-10-24

Filter coefficient updating in time domain filtering

#19
20190294491
2019-09-26

Interference suppression using repeated reduced rank adaptive filtering in Fractional Fourier Transform (FrFT) domains

#20
20190109581
2019-04-11

ADAPTIVE FILTER METHOD, SYSTEM AND APPARATUS

#21
20190068171
2019-02-28

Automatic composition of universal filters

#22
20190042536
2019-02-07

Subspace-constrained partial update method for high-dimensional adaptive processing systems

#23
20180254053
2018-09-06

Filter coefficient updating in time domain filtering

#24
20180226954
2018-08-09

Partitioned block frequency domain adaptive filter device comprising adaptation modules and correction modules

#25
20170365247
2017-12-21

Electronic device, echo signal cancelling method thereof and non-transitory computer readable recording medium

#26
20170141910
2017-05-18

Systems and methods for real-time operation of software radio frequency canceller

#27
20170117878
2017-04-27

Method and apparatus for determining stability factor of adaptive filter

#28
20150263701
2015-09-17

Adaptive filter for system identification

#29
20150032788
2015-01-29

Linearity compensator for removing nonlinear distortion

#30
20130211829
2013-08-15

Adaptive systems using correntropy

#31
20120166159
2012-06-28

Method and apparatus for adaptive gravity search

#32
20120150934
2012-06-14

Receiver having an adaptive filter and method of optimizing the filter

#33
20120109600
2012-05-03

Variable step-size least mean square method for estimation in adaptive networks

#34
20110261950
2011-10-27

ADAPTIVE FILTER AND ECHO CANCELLER HAVING THIS ADAPTIVE FILTER

#35
20110176688
2011-07-21

Signal processing method, signal processing device, and signal processing program

#36
20100030529
2010-02-04

System identification method and program, storage medium, and system identification device

#37
20080267276
2008-10-30

Channel estimation enhanced LMS equalizer

#38
20070185693
2007-08-09

System estimation method and program, recording medium, and system estimation device

#39
20070168408
2007-07-19

Parallel system and method for acceleration of multiple channel LMS based algorithms

#40
20060288067
2006-12-21

Reduced complexity recursive least square lattice structure adaptive filter by means of approximating the forward error prediction squares using the backward error prediction squares

#41
20060288066
2006-12-21

Reduced complexity recursive least square lattice structure adaptive filter by means of limited recursion of the backward and forward error prediction squares

#42
20060215747
2006-09-28

Channel estimation enhanced LMS equalizer

#43
20060133471
2006-06-22

Coefficient update circuit, adaptive equalizer including the coefficient update circuit, and coefficient update method of the adaptive equalizer

#44
20060039458
2006-02-23

Adaptive filtering using fast affine projection adaptation

#45
20050285667
2005-12-29

Sign-sign least means square filter

#46
20050281327
2005-12-22

Hierarchical adaptive equalizer and design method thereof

#47
20050171744
2005-08-04

System identification method

#48
20050163259
2005-07-28

Processing device and processing method

#49
20050111656
2005-05-26

Modified affine projection algorithm for non-stationary signal

#50
20050053125
2005-03-10

Adaptive equalization using a conditional update sign-sign least mean square algorithm

#51
20050018763
2005-01-27

Method for echo cancellation in a DMT modem apparatus, DMT modem apparatus and computer program product thereof

#52
16998864
2022-12-06

Digital noise-shaping FFE/DFE for ADC-based wireline links

#53
16692213
2020-11-10

Gas turbine engine generator power management control system

#54
16573679
2022-02-22

Autonomously motile device with residual echo suppression

#55
15871741
2018-10-02

Method and apparatus for processing audio signals in a multi-microphone system