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Class Information
Number: 455/570
Name: Telecommunications > Transmitter and receiver at same station (e.g., transceiver) > Radiotelephone equipment detail > Hands-free or loudspeaking arrangement > Noise suppression or echo cancellation
Description: Subject matter wherein any undesired electrical disturbance occurring in signal paths between loudspeaker and microphone circuitry is reduced or prevented.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7616973 |
Portable audio device having reduced sensitivity to RF interference and related methods |
Nov. 10, 2009 |
| 7573989 |
Telephone communications apparatus |
Aug. 11, 2009 |
| 7574176 |
Channel selection in a wireless network |
Aug. 11, 2009 |
| 7570937 |
Comfort noise generator |
Aug. 4, 2009 |
| 7570974 |
Bluetooth.RTM. enabled hearing aid |
Aug. 4, 2009 |
| 7554933 |
Echo cancellation device for full duplex communication systems |
Jun. 30, 2009 |
| 7552050 |
Speech recognition system and method utilizing adaptive cancellation for talk-back voice |
Jun. 23, 2009 |
| 7545886 |
Method and apparatus for eye-opening based optimization |
Jun. 9, 2009 |
| 7522928 |
Dynamic EMI (electromagnetic interference) management |
Apr. 21, 2009 |
| 7519347 |
Method and device for noise detection |
Apr. 14, 2009 |
| 7515944 |
Wireless headset having improved RF immunity to RF electromagnetic interference produced from a mobile wireless communications device |
Apr. 7, 2009 |
| 7505737 |
Apparatus for generating clock signal in mobile communication terminal |
Mar. 17, 2009 |
| 7499686 |
Method and apparatus for multi-sensory speech enhancement on a mobile device |
Mar. 3, 2009 |
| 7499687 |
Wireless transmitter DC offset recalibration |
Mar. 3, 2009 |
| 7493131 |
Velocity responsive power control |
Feb. 17, 2009 |
| 7477682 |
Echo cancellation for a packet voice system |
Jan. 13, 2009 |
| 7466998 |
Layout and architecture for reduced noise coupling between circuitry and on-chip antenna |
Dec. 16, 2008 |
| 7457644 |
Microphone position and speech level sensor |
Nov. 25, 2008 |
| 7450917 |
Power saving transmitter of mobile communication terminal |
Nov. 11, 2008 |
| 7433665 |
Apparatus and method for converting single-ended signals to a differential signal, and transceiver employing same |
Oct. 7, 2008 |
| 7433716 |
Communication apparatus |
Oct. 7, 2008 |
| 7400910 |
Speaker sound enhancement for a mobile terminal |
Jul. 15, 2008 |
| 7386327 |
Apparatus and method for controlling noise in a mobile communication terminal |
Jun. 10, 2008 |
| 7346013 |
Frequency domain equalization of communication signals |
Mar. 18, 2008 |
| 7330739 |
Method and apparatus for providing a sidetone in a wireless communication device |
Feb. 12, 2008 |
| 7330500 |
Adjustable electronic duplexer |
Feb. 12, 2008 |
| 7330738 |
Apparatus and method for canceling residual echo in a mobile terminal of a mobile communication system |
Feb. 12, 2008 |
| 7308231 |
Computer mouse with bluetooth hand-free handset |
Dec. 11, 2007 |
| 7286809 |
Method and circuit system for suppressing noise in a signal processing circuit |
Oct. 23, 2007 |
| 7283850 |
Method and apparatus for multi-sensory speech enhancement on a mobile device |
Oct. 16, 2007 |
| 7260163 |
Noise blanker using an adaptive all-pole predictor and method therefor |
Aug. 21, 2007 |
| 7257372 |
Bluetooth enabled hearing aid |
Aug. 14, 2007 |
| 7248835 |
Method for automatically switching a profile of a mobile phone |
Jul. 24, 2007 |
| 7231234 |
Method and apparatus for reducing echo in a communication system |
Jun. 12, 2007 |
| 7225001 |
System and method for distributed noise suppression |
May. 29, 2007 |
| 7221659 |
Method and system for managing erroneous attenuation of signal |
May. 22, 2007 |
| 7212841 |
Telephone apparatus and a communication method using such apparatus |
May. 1, 2007 |
| 7206515 |
Single-ended/differential wired radio frequency interface |
Apr. 17, 2007 |
| 7203468 |
Signal generation device |
Apr. 10, 2007 |
| 7197325 |
Power control apparatus with PAM reference voltage tuner for a mobile terminal |
Mar. 27, 2007 |
| 7171245 |
Method for eliminating musical tone from becoming wind shear sound |
Jan. 30, 2007 |
| 7171246 |
Noise suppression |
Jan. 30, 2007 |
| 7167733 |
Portable telephone with detachable earphone and microphone modules |
Jan. 23, 2007 |
| 7155554 |
Methods and apparatuses for generating a single request for block transactions over a communication fabric |
Dec. 26, 2006 |
| 7151828 |
Circuit arrangement for the analogue suppression of echoes |
Dec. 19, 2006 |
| 7136471 |
Method and apparatus for detecting a secondary destination of a telephone call based on changes in the telephone signal path |
Nov. 14, 2006 |
| 7133701 |
Microphone position and speech level sensor |
Nov. 7, 2006 |
| 7099662 |
Transceiver unit with interference-reducing antenna |
Aug. 29, 2006 |
| 7095984 |
Base station apparatus and direction-of-arrival estimating method |
Aug. 22, 2006 |
| 7092745 |
Portable electronics device with variable sound output |
Aug. 15, 2006 |
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