| Patents for H04M 9 - Arrangements for interconnection not involving centralised switching (8,105) |
|---|
| 05/02/2002 | US20020051527 Method and apparatus for image capture, compression and transmission of a visual image over telephone or radio transmission system |
| 04/30/2002 | US6381239 Multiple application switching platform and method |
| 04/30/2002 | US6381224 Method and apparatus for controlling a full-duplex communication system |
| 04/25/2002 | WO2002032356A1 Transient processing for communication system |
| 04/24/2002 | EP1199869A1 Telephone set with means for storing or indicating data concerning incoming and/or outgoing calls |
| 04/23/2002 | US6377682 Robust adaptive filter for use in acoustic and network echo cancellation |
| 04/23/2002 | US6377679 Speakerphone |
| 04/23/2002 | US6377671 Digital key telephone system and extension terminal device thereof |
| 04/19/2002 | CA2359262A1 Telephone with means of memorization or indication of data related to incoming and/or outgoing calls |
| 04/18/2002 | US20020044666 Echo suppression device and method for performing the same |
| 04/18/2002 | US20020044641 Telephone with means of memorization or indication of data related to incoming and/or outgoing calls |
| 04/17/2002 | CN1083201C Digital key telephone connecting apparatus in digital key telephone system |
| 04/16/2002 | US6373924 Digital key telephone system and extension terminal device thereof |
| 04/11/2002 | WO2002030099A1 Echo attenuating method and device |
| 04/11/2002 | WO2002029567A1 Intra-vehicle communications system in a mining vehicle monitoring system |
| 04/11/2002 | US20020041679 Method and apparatus for minimizing far-end speech effects in hands-free telephony systems using acoustic beamforming |
| 04/10/2002 | EP1195978A2 Method for handling far-end speech effects in hands-free telephony systems based on acoustic beamforming |
| 04/10/2002 | EP1195977A2 Use of handset microphone to enhance speakerphone loudspeakers performance |
| 04/10/2002 | EP1195976A2 Acoustic echo cancellation |
| 04/09/2002 | US6370245 Full duplex communication circuits with bilateral T hybrid and balanced impedance configurations |
| 04/09/2002 | CA2233294C A telecommunications switch |
| 04/04/2002 | US20020039414 Acoustic echo canceler and handsfree telephone set |
| 04/03/2002 | EP1192792A2 Method and apparatus allowing remote key system units to interoperate |
| 04/02/2002 | US6366585 Distributed control in a communication system |
| 03/28/2002 | WO2002025907A1 Virtual pbx |
| 03/28/2002 | WO2000074362A3 Methods and apparatus for improving adaptive filter performance by inclusion of inaudible information |
| 03/28/2002 | DE10045091A1 Vorrichtung zur fernbetätigten Türöffnung Apparatus for remotely operated door opening |
| 03/27/2002 | EP1190553A1 Noise reduction circuit for telephones |
| 03/27/2002 | EP1190495A1 Coded domain echo control |
| 03/27/2002 | EP1190494A1 Coded domain adaptive level control of compressed speech |
| 03/21/2002 | WO2002023880A1 Device for remote door opening |
| 03/21/2002 | WO2002023755A2 Residual echo estimation for echo cancellation |
| 03/21/2002 | WO2001069371A3 Computer appliance comprising a multiway acoustic output and input system |
| 03/21/2002 | DE10044503A1 Setting emitted signal intensity of signal generator involves automatically varying useful signal intensity with fluctuation of intensity of the noise signal in environment around signal source |
| 03/21/2002 | DE10043064A1 Loudspeaker noise cancellation system for head sets removes echos in long delay links |
| 03/20/2002 | EP1189419A2 Method and device for eliminating the loudspeaker interference on microphone signals |
| 03/19/2002 | US6360203 System and method for dynamic voice-discriminating noise filtering in aircraft |
| 03/14/2002 | WO2002021817A2 Method and system for elimination of acoustic feedback |
| 03/14/2002 | WO2002021807A2 Echo reduction in two-way communication |
| 03/14/2002 | WO2001010102A3 Acoustical echo cancellation device |
| 03/13/2002 | EP1186158A2 Methods and apparatus for improved sub-band adaptive filtering in echo cancellation systems |
| 03/13/2002 | EP1186157A1 Symmetry based subband acoustic echo cancellation |
| 03/13/2002 | EP1186156A2 Adaptability to multiple hands-free communication accessories |
| 03/13/2002 | EP1186155A2 Loudspeaker volume range control |
| 03/12/2002 | US6354748 Playing audio files at high priority |
| 03/06/2002 | EP1183848A1 System and method for near-end talker detection by spectrum analysis |
| 03/06/2002 | CN1338857A Acoustic controlled switching system and method |
| 02/28/2002 | US20020025029 Digital key telephone set and digital key telephone system |
| 02/27/2002 | EP1181806A1 Method and device for suppressing background noise and echoes |
| 02/26/2002 | US6351532 Echo canceler employing multiple step gains |
| 02/21/2002 | US20020021798 Voice switching system and voice switching method |
| 02/20/2002 | EP1180892A2 Voice switching system and voice switching method |
| 02/20/2002 | EP1180300A1 Acoustic echo cancellation |
| 02/20/2002 | EP1180299A1 Apparatus and method for detecting far end speech |
| 02/14/2002 | DE10037289A1 Verfahren und Anordnung zum Erzeugen von Schall in einem drahtlosen Telekommunikationssystem Method and device for generating sound in a wireless telecommunications system |
| 02/07/2002 | WO2002011414A2 Method and device for producing sound in a wireless telecommunications system |
| 02/07/2002 | US20020015500 Method and device for acoustic echo cancellation combined with adaptive beamforming |
| 02/07/2002 | US20020015477 Dynamic bandwidth allocation |
| 01/31/2002 | WO2002009434A1 Electronic digital door opener |
| 01/31/2002 | US20020012429 Interference-signal-dependent adaptive echo suppression |
| 01/31/2002 | US20020012421 Communication system with multicarrier telephony transport |
| 01/31/2002 | US20020012070 Cathode ray tube and method of displaying picture |
| 01/31/2002 | DE10029943A1 Door station of door bell/intercom system used in apartments, has microcontroller provided separately for each bell key, which are controlled individually by a common input device |
| 01/30/2002 | EP1175780A1 Telephone adapter and telephone system providing multiple telephone lines |
| 01/29/2002 | US6343113 High impedance absolute telephone line voltage measurement circuit |
| 01/24/2002 | US20020008145 Low-power hand-held transaction device |
| 01/24/2002 | DE10033761A1 Door bell answering system has remote retrieval by telephone |
| 01/23/2002 | EP1173935A2 Hands-free device and method of operating the same |
| 01/23/2002 | CN1332911A Methods and apparatus for providing echo suppression using frequency domain nonlinear processing |
| 01/22/2002 | CA2225203C Hands-free telephone |
| 01/17/2002 | DE10030104A1 Combined name plate, bell pushes and door intercom, includes contacts and microcontroller, permitting programmed display, communication and control |
| 01/16/2002 | EP1171990A1 Method and apparatus for space-time echo cancellation |
| 01/16/2002 | CN1331883A Methods and appts. for adaptive signal gain control in communications systems |
| 01/15/2002 | US6339641 Telephone device |
| 01/10/2002 | WO2002003563A1 Echo suppression using adaptive gain based on residual echo energy |
| 01/09/2002 | EP1170864A1 A robust adaptive filter for use in acoustic and network echo cancellation |
| 01/08/2002 | US6337907 Echo canceller employing dual-H architecture having improved coefficient transfer |
| 01/03/2002 | DE10030926A1 Störsignalabhängige adaptive Echounterdrückung Störsignalabhängige adaptive echo cancellation |
| 01/03/2002 | DE10030548A1 Telefonieren und Freisprechen für schnurlose Endgeräte mit Echokompensation Speakerphone calls and wireless terminals with echo cancellation |
| 01/03/2002 | DE10029945A1 Door station with letter box, doorbell and/or door intercom for flats has programmable nameplates for displaying names of occupants |
| 01/02/2002 | EP1168801A2 Noise dependent adaptive echo cancellation |
| 01/02/2002 | EP1168800A2 Telephony and hands-free for wireless terminals with echo compensation |
| 01/02/2002 | EP1166245A1 Security systems |
| 01/02/2002 | EP1019847A4 System for dynamically adapting the length of a filter |
| 01/02/2002 | CN1329453A Telephony and hand-free speed of wireless terminal equipment with echo compensation |
| 01/01/2002 | US6336201 Synchronization in a communications system with multicarrier telephony transport |
| 01/01/2002 | CA2247429C Apparatus and method for non-linear processing in a communication system |
| 12/27/2001 | US20010055985 Telephoning and hands-free speech for cordless final apparatus with echo compensation |
| 12/25/2001 | US6334219 Channel selection for a hybrid fiber coax network |
| 12/20/2001 | DE10016620A1 Lowering method for noise components, involves using filter regulated by estimated value composed of estimated noise component multiplied by weight factor which is smaller when voice component is present |
| 12/20/2001 | DE10016619A1 Interference component lowering method involves using adaptive filter controlled by interference estimated value having estimated component dependent on reverberation of acoustic voice components |
| 12/19/2001 | EP1164712A1 Sound communication device and echo processor |
| 12/19/2001 | EP1163787A2 Echo suppression device and method for performing the same |
| 12/19/2001 | CN1076551C A home and small business phone system for operation on a single internal twisted pair line |
| 12/18/2001 | CA2227480C Echo cancellation method and echo canceller implementing such a process |
| 12/13/2001 | US20010050986 Wire bound telecommunications device and a power supply circuit |
| 12/11/2001 | US6330241 Multi-point to point communication system with remote unit burst identification |
| 12/06/2001 | WO2001093554A2 Method and device for acoustic echo cancellation combined with adaptive beamforming |
| 12/06/2001 | US20010048740 Noise canceler system with adaptive cross-talk filters |
| 12/06/2001 | US20010048678 Processing device network |