ClassID:

223533

H04B3/237 - CPC Classification

Classification description:

Line transmission systems; Details; Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers using two adaptive filters, e.g. for near end and for end echo cancelling

Recent Application in this class:
#1
20220247603
2022-08-04

Method and apparatus for training a full-duplex communication link

#2
20210218606
2021-07-15

Distributed dynamic power savings for adaptive filters in a high-speed data channel

#3
20210083718
2021-03-18

ECHO CANCELLATION IN A MULTIPORT DATA TRANSCEIVER

#4
20200091963
2020-03-19

Acoustic echo cancellation with room change detection

#5
20200021329
2020-01-16

Cloud-based acoustic echo canceller

#6
20190356353
2019-11-21

Echo cancellation in a multiport data transceiver

#7
20190273532
2019-09-05

CARRIER FREQUENCY OFFSET ESTIMATION DEVICE AND CARRIER FREQUENCY OFFSET ESTIMATION METHOD

#8
20190215022
2019-07-11

Transmission device and system

#9
20190181911
2019-06-13

Cloud-based acoustic echo canceller

#10
20190165832
2019-05-30

Method and system for full duplex enhanced audio

#11
20190052311
2019-02-14

FULL DUPLEX TRANSCEIVERS HAVING DIGITAL DISTORTION COMPENSATION AND METHODS OF THEREOF

#12
20180331719
2018-11-15

Echo canceller device and voice telecommunications device

#13
20180152326
2018-05-31

Channel quality indicator for wireline channel degradation detection

#14
20180007482
2018-01-04

Bi-magnitude processing framework for nonlinear echo cancellation in mobile devices

#15
20170365247
2017-12-21

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

#16
20170310360
2017-10-26

ECHO REMOVAL DEVICE, ECHO REMOVAL METHOD, AND NON-TRANSITORY STORAGE MEDIUM

#17
20170207817
2017-07-20

Modulation and equalization in an orthonormal time-frequency shifting communications system

#18
20170041457
2017-02-09

Updating filter coefficients during echo cancellation

#19
20160233920
2016-08-11

Channel detection method and system thereof

#20
20160134759
2016-05-12

Pure delay estimation

#21
20160014267
2016-01-14

Acoustic echo suppression

#22
20150269926
2015-09-24

Source audio acoustic leakage detection and management in an adaptive noise canceling system

#23
20150181018
2015-06-25

Acoustic echo suppression

#24
20140185792
2014-07-03

Bidirectional communication system and method for compensating for undesired feedback in the bidirectional communication system

#25
20130301847
2013-11-14

Sequenced adaptation of anti-noise generator response and secondary path response in an adaptive noise canceling system

#26
20130287216
2013-10-31

Estimation and suppression of harmonic loudspeaker nonlinearities

#27
20120140797
2012-06-07

Adjustable latency transceiver processing

#28
20110019833
2011-01-27

Apparatus and method for computing filter coefficients for echo suppression

#29
20100226503
2010-09-09

ECHO CANCELLER

#30
20090052683
2009-02-26

Echo cancellation

#31
20090028075
2009-01-29

Full-duplex communication device and method of acoustic echo cancellation therein

#32
20080205633
2008-08-28

Estimating delay of an echo path in a communication system

#33
20080187129
2008-08-07

Method and system for echo cancellation in a network switch

#34
20070286404
2007-12-13

Method and apparatus for detecting echo path changes in an acoustic echo canceller

#35
20070189505
2007-08-16

Detecting reflections in a communication channel

#36
20070116255
2007-05-24

Echo canceller having a series arrangement of adaptive filters with individual update control strategy

#37
20060133303
2006-06-22

Canceller device and data transmission system

#38
20050122893
2005-06-09

Techniques to reduce echo

#39
18309022
2024-07-02

Segmented echo cancellation filter for use in full-duplex communication systems

#40
17449041
2023-06-20

Segmented echo cancellation filter for use in full-duplex communication systems

#41
15290959
2018-11-13

Residual echo detection based on non-causality

#42
14933954
2016-10-25

Methods and devices for updating filter coefficients during echo cancellation

#43
14082981
2015-09-29

Determining power over ethernet impairment

#44
14035369
2015-04-07

Non-uniform adaptive echo cancellation

#45
13929588
2017-03-21

Adaptive echo cancellation

#46
12425216
2015-10-13

Self-tuning high speed transceiver for IC wireline channel