| Patents for H04M 9 - Arrangements for interconnection not involving centralised switching (8,105) |
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| 02/13/2003 | WO2002043350A3 Call management system |
| 02/13/2003 | US20030032390 Acquisition and tracking in communication system with multicarrier telephony transport |
| 02/13/2003 | US20030031315 Echo canceller having nonlinear echo suppressor for harmonics calculations |
| 02/13/2003 | US20030031314 Methods and apparatus for echo cancellation using an adaptive lattice based non-linear processor |
| 02/12/2003 | EP1282978A1 Noise-adaptive communications signal gain |
| 02/12/2003 | EP1183848A4 System and method for near-end talker detection by spectrum analysis |
| 02/06/2003 | WO2003010950A1 Echo canceller having nonlinear echo suppressor for harmonics calculations |
| 02/06/2003 | WO2003010949A1 Communication system having line and acoustic echo canceling means with spectral post processors |
| 02/06/2003 | US20030026417 Communication system having line and acoustic echo canceling means with spectral post processors |
| 02/06/2003 | US20030026247 Emulation of phone extensions in a packet telephony distribution system |
| 02/05/2003 | EP1282297A2 Method and apparatus for echo and noise suppression |
| 02/04/2003 | US6516063 Echo canceller having improved non-linear processor |
| 01/30/2003 | WO2003009529A2 Emulation of phone extensions in a packet telephony distribution system |
| 01/30/2003 | US20030021389 Impulse response setting method for the 2-channel echo canceling filter, a two-channel echo canceller, and a two-way 2-channel voice transmission device |
| 01/30/2003 | DE20214159U1 Entry phone system also has speech link to stations on each floor |
| 01/23/2003 | WO2003007500A1 Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus, and transfer function calculation apparatus |
| 01/22/2003 | EP1277370A1 Telephone communication system over a single telephone line |
| 01/21/2003 | US6510229 Communication system with multicarrier telephony transport |
| 01/21/2003 | US6510225 Ultrasonically-calibrated fast-start echo canceller for cellular and pcs telephone car kits |
| 01/21/2003 | US6510224 Enhancement of near-end voice signals in an echo suppression system |
| 01/14/2003 | US6507653 Desired voice detection in echo suppression |
| 01/14/2003 | US6507652 Echo canceller employing dual-H architecture having improved non-linear echo path detection |
| 01/08/2003 | CN1390033A Wireless paging system |
| 01/01/2003 | CN1389075A Electronic digital door opener |
| 01/01/2003 | CN1388690A Fixed user unit for telecommunication |
| 12/25/2002 | CN1097360C Acoustic echo elimination in digital mobile communications system |
| 12/19/2002 | WO2002101728A1 Method and system for suppressing echoes and noises in environments under variable acoustic and highly fedback conditions |
| 12/19/2002 | US20020191779 System for convolutional echo cancellation by iterative autocorrelation |
| 12/19/2002 | US20020191777 Twisted pair termination using vacuum microelectronic circuitry |
| 12/17/2002 | US6496581 Coupled acoustic echo cancellation system |
| 12/17/2002 | US6496576 Digital key telephone system and extension terminal device thereof |
| 12/12/2002 | US20020187791 Security system and security apparatus |
| 12/12/2002 | US20020186136 Hospital bed and network system |
| 12/11/2002 | EP1264233A2 Computer appliance comprising a multiway acoustic output and input system |
| 12/10/2002 | US6493448 Process for echo suppression with adaptive fir filters |
| 12/05/2002 | US20020184013 Method of masking noise modulation and disturbing noise in voice communication |
| 12/05/2002 | US20020183031 Wireless call system |
| 12/05/2002 | US20020181699 System for convolutional echo cancellation by iterative autocorrelation |
| 12/05/2002 | US20020181698 Sound communication device and echo processor |
| 12/04/2002 | EP1020068B1 Echo compensation method, echo compensation device and telecommunication device |
| 12/04/2002 | CN1383314A Method for modulating noise shielding and noise interfrence in speech communication |
| 11/28/2002 | WO2002096075A1 Telephone apparatus and a communication method using such apparatus |
| 11/28/2002 | WO2002095975A1 Echo processing apparatus |
| 11/28/2002 | WO2002078313B1 System for convolutional echo cancellation by iterative autocorrelation |
| 11/28/2002 | WO2002011414A3 Method and device for producing sound in a wireless telecommunications system |
| 11/28/2002 | US20020176556 Intercom system for mansion/apartment house |
| 11/28/2002 | DE10209807A1 Two-way intercom system for living accommodation and lodgings, each domicile-related main station has speech circuit with load impedance connected to common bus |
| 11/27/2002 | CN1381964A Fixed user unit for telecommunication |
| 11/26/2002 | US6487405 Communication system with multicarrier telephony transport for controlling a plurality of service units |
| 11/26/2002 | US6487178 Methods and apparatus for providing volume control in communicating systems including a linear echo canceler |
| 11/26/2002 | CA2282362C A system and method for providing high terminal coupling loss in a handsfree terminal |
| 11/21/2002 | WO2002093895A1 Method for adaptive control of multichannel acoustic echo cancellation system and device therefor |
| 11/21/2002 | WO2002093774A1 Echo canceller and a method of cancelling echo |
| 11/21/2002 | US20020172352 Non-embedded acoustic echo cancellation |
| 11/21/2002 | US20020172342 Audio conference platform with dynamic speech detection threshold |
| 11/13/2002 | EP0852094B1 Method of and apparatus for off-hook signalling between telephones or adjuncts on the same loop |
| 11/13/2002 | CN1379574A Telephone system and method for instant interpretation |
| 11/07/2002 | WO2002089458A1 Audio conference platform with dynamic speech detection threshold |
| 11/06/2002 | EP1255398A2 Method for masking noise and noise modulation reduction during speech transmission |
| 11/05/2002 | US6477354 Communication system transmitting modulated orthogonal carries with service units that scan spectrum to identify assigned band |
| 10/31/2002 | US20020159585 Arrangement for suppressing aninterfering component of an input signal |
| 10/31/2002 | DE10217354A1 Domestic communications system door station has transfer device between first functional element and dwelling station, second wireless signal transfer device between functional elements |
| 10/24/2002 | US20020154761 System and method for controlling a filter to enhance speakerphone performance |
| 10/24/2002 | DE10119277A1 Masking noise modulation and interference noise in non-speech intervals in telecommunication system that uses echo cancellation, by inserting noise to match estimated level |
| 10/24/2002 | DE10119008A1 Outboard armored/unarmored vehicle voice point has additional connections for command device with full access to on-board communications system functions, connection to other vehicles |
| 10/23/2002 | EP1250797A1 Improved system and method for implementation of an echo canceller |
| 10/22/2002 | US6469638 Intra-vehicle communications system in a mining vehicle monitoring system |
| 10/17/2002 | US20020151280 Line interface with gain feedback coupled matching impedance |
| 10/16/2002 | CN1092870C Spectral noise compensation for echo cancellation |
| 10/15/2002 | US6467092 Method for adjusting power in a communication system with multicarrier telephony transport |
| 10/10/2002 | WO2002080422A1 Dual threshold correlator |
| 10/10/2002 | WO2002080126A2 Hospital bed and network system |
| 10/10/2002 | CA2439163A1 Hospital bed and network system |
| 10/03/2002 | WO2002078314A2 Network echo suppression in mobile stations |
| 10/03/2002 | WO2002078313A1 System for convolutional echo cancellation by iterative autocorrelation |
| 10/03/2002 | WO2002078312A1 System for convolutional echo cancellation by iterative autocorrelation |
| 10/03/2002 | WO2001093554A3 Method and device for acoustic echo cancellation combined with adaptive beamforming |
| 10/03/2002 | US20020142811 Network echo suppression in mobile stations |
| 10/03/2002 | US20020141568 Dual threshold correlator |
| 10/02/2002 | CN1372409A Integrated residence intercommunication system |
| 10/01/2002 | US6459942 Acoustic coupling compensation for a speakerphone of a system |
| 10/01/2002 | US6459781 Key telephone apparatus with call distribution function |
| 09/26/2002 | WO2002076066A1 Method and system for noise cancellation in communication terminal |
| 09/26/2002 | WO2002075944A1 Method of arbitrating speakerphone operation in a portable communication device for eliminating false arbitration due to echo |
| 09/25/2002 | EP1243119A1 Band-by-band full duplex communication |
| 09/25/2002 | CN1091558C Telephone apparatus |
| 09/24/2002 | US6456705 Digital key telephone system and extension terminal device thereof |
| 09/19/2002 | WO2002073814A2 Transmit/receive arbitrator |
| 09/19/2002 | US20020132647 Method of arbitrating speakerphone operation in a portable communication device for eliminating false arbitration due to echo |
| 09/19/2002 | US20020131582 Method and system for noise cancellation in communication terminal |
| 09/19/2002 | US20020131581 Cell phone privacy and unobtrusivenss |
| 09/19/2002 | DE10107621A1 System combining conventional answering machine with door call installation |
| 09/18/2002 | EP1070417B1 Echo cancellation |
| 09/18/2002 | EP0648397B1 Method for fail-safe operation in a speaker phone system |
| 09/17/2002 | US6453041 Voice activity detection system and method |
| 09/17/2002 | US6453040 Telephone adapter and telephone system providing multiple telephone lines |
| 09/12/2002 | WO2002051016A3 Bidirectional signal repeater |
| 09/12/2002 | US20020126855 Echo sound signal suppressing apparatus |
| 09/12/2002 | US20020126836 Transmit/receive arbitrator |
| 09/12/2002 | US20020126816 Key telephone system, key telephone, interface unit, and transmission scheme determination method |