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Class Information
Number: 370/289
Name: Multiplex communications > Duplex > Transmit/receive interaction control > Echo suppression or cancellation > Having residual echo cancellation or suppression
Description: Subject matter wherein an apparatus is provided to cancel or suppress the echo remaining after the main echo has been suppressed.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7400278 |
Echo prevention circuit, filter coefficient setting method, and recording medium with program recorded |
Jul. 15, 2008 |
| 7366161 |
Full duplex voice path capture buffer with time stamp |
Apr. 29, 2008 |
| 7366475 |
Signal strength measurements in cellular telecommunication systems |
Apr. 29, 2008 |
| 7358875 |
Echo preventing circuit and digital signal processing circuit |
Apr. 15, 2008 |
| 7352687 |
Mixed domain cancellation |
Apr. 1, 2008 |
| 7346013 |
Frequency domain equalization of communication signals |
Mar. 18, 2008 |
| 7330500 |
Adjustable electronic duplexer |
Feb. 12, 2008 |
| 7304962 |
Delay measurement system in a packet network |
Dec. 4, 2007 |
| 7254116 |
Method and apparatus for transceiver noise reduction in a frame-based communications network |
Aug. 7, 2007 |
| 7236463 |
Transceiver for echo and near-end crosstalk cancellation without loop timing configuration |
Jun. 26, 2007 |
| 7230954 |
Cross link intra-vehicular data communication using a field coupled transmission line |
Jun. 12, 2007 |
| 7164659 |
Adaptive gain control based on echo canceller performance information |
Jan. 16, 2007 |
| 7155018 |
System and method facilitating acoustic echo cancellation convergence detection |
Dec. 26, 2006 |
| 7130281 |
Devices, softwares and methods with improved performance of acoustic echo canceler in VoIP communication |
Oct. 31, 2006 |
| 7092516 |
Echo processor generating pseudo background noise with high naturalness |
Aug. 15, 2006 |
| 7085374 |
Distributed echo cancelling |
Aug. 1, 2006 |
| 7082157 |
Residual echo reduction for a full duplex transceiver |
Jul. 25, 2006 |
| 7068637 |
Base station and mobile communication system |
Jun. 27, 2006 |
| 7065056 |
Transceiver circuit including an echo canceller |
Jun. 20, 2006 |
| 7054437 |
Statistical adaptive-filter controller |
May. 30, 2006 |
| 7050575 |
Echo canceler coefficient update apparatus and method |
May. 23, 2006 |
| 7031269 |
Acoustic echo canceller |
Apr. 18, 2006 |
| 6990083 |
Method and device for computing echo-cancellation coefficients using FFT |
Jan. 24, 2006 |
| 6983047 |
Echo canceling system for a bit pump and method of operating the same |
Jan. 3, 2006 |
| 6975591 |
Methodology for improving TCP throughput over lossy communication links |
Dec. 13, 2005 |
| 6963648 |
Echo/noise canceling device for use with personal computers |
Nov. 8, 2005 |
| 6956830 |
Line echo cancellation system |
Oct. 18, 2005 |
| 6947395 |
Locating network echos |
Sep. 20, 2005 |
| 6947773 |
Method and apparatus for reducing echo feedback in a communication system |
Sep. 20, 2005 |
| 6940829 |
Method and processor in a telecommunication system |
Sep. 6, 2005 |
| 6934265 |
Interference cancellation receiver for high-speed communication systems |
Aug. 23, 2005 |
| 6912209 |
Voice gateway with echo cancellation |
Jun. 28, 2005 |
| 6894989 |
Separation circuit for an echo canceling system and method of operating the same |
May. 17, 2005 |
| 6891809 |
Background communication using shadow of audio signal |
May. 10, 2005 |
| 6891793 |
Network system |
May. 10, 2005 |
| 6868116 |
Universal telephony tones detector |
Mar. 15, 2005 |
| 6831900 |
Filter cell, method of deriving an echo component and an echo canceling system employing the same |
Dec. 14, 2004 |
| 6816592 |
Echo cancellation in digital data transmission system |
Nov. 9, 2004 |
| 6813351 |
Method and apparatus for echo cancellation that suppresses echo leak through |
Nov. 2, 2004 |
| 6804204 |
Apparatus for a digital echo canceller and method therefor |
Oct. 12, 2004 |
| 6792106 |
Echo canceller and method of echo cancellation using an NLMS algorithm |
Sep. 14, 2004 |
| 6775529 |
Active resistive summer for a transformer hybrid |
Aug. 10, 2004 |
| 6751313 |
Method and apparatus for an improved echo canceller |
Jun. 15, 2004 |
| 6744885 |
ASR talkoff suppressor |
Jun. 1, 2004 |
| 6741874 |
Method and apparatus for reducing echo feedback in a communication system |
May. 25, 2004 |
| 6738358 |
Network echo canceller for integrated telecommunications processing |
May. 18, 2004 |
| 6714646 |
Method and apparatus for echo suppression |
Mar. 30, 2004 |
| 6711258 |
Apparatus and method for controlling a volume in a digital telephone |
Mar. 23, 2004 |
| 6690791 |
Method and array for echo compensation in partial bands |
Feb. 10, 2004 |
| 6687236 |
Method for providing echo control devices in communication links to intelligent peripherals |
Feb. 3, 2004 |
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