| Patents for H04M 9 - Arrangements for interconnection not involving centralised switching (8,105) |
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| 02/22/2011 | US7894487 Time synchronization in a network |
| 02/17/2011 | DE10119008B4 Außenbordsprechstelle Outboard station |
| 02/16/2011 | EP2285135A1 Microphone-speaker device comprising a low pass filter |
| 02/15/2011 | US7889860 Securable cradle for handheld devices |
| 02/10/2011 | US20110033037 Adaptive filtering with flexible selection of algorithm complexity and performance |
| 02/08/2011 | USRE42123 Programmable subscriber line circuit partitioned into high voltage interface and digital control subsections |
| 02/08/2011 | US7885690 Methods for driving devices capable of displaying images and processing audio messages |
| 02/08/2011 | US7885634 High frequency signal hub |
| 02/08/2011 | US7885633 Power line communication methods and devices |
| 02/08/2011 | US7885403 Radiotelephone |
| 02/08/2011 | US7885402 Gain control |
| 02/03/2011 | US20110026732 System for Detecting and Reducing Noise via a Microphone Array |
| 02/02/2011 | EP2280557A1 Microphone/speaker device |
| 02/02/2011 | CN1630216B 蓝牙终端 Bluetooth terminal |
| 02/02/2011 | CN101964670A Echo suppression method and apparatus thereof |
| 02/01/2011 | US7881483 Two-way communications device having a single transducer |
| 02/01/2011 | US7881480 System for detecting and reducing noise via a microphone array |
| 02/01/2011 | US7881463 Wireless digital subscriber line device having reduced RF interference |
| 02/01/2011 | US7881462 Outlet add-on module |
| 02/01/2011 | US7881461 Method and apparatus for conveying bidirectional data, power and timing signals using a single transformer |
| 02/01/2011 | US7881460 Configuration of echo cancellation |
| 02/01/2011 | US7881459 Acoustic echo canceller using multi-band nonlinear processing |
| 02/01/2011 | US7881458 Method and apparatus for adaptive hybrid termination in a multi-carrier communication system |
| 02/01/2011 | US7881181 Systems and method for orthogonal frequency divisional multiplexing |
| 02/01/2011 | US7881180 Systems and method for orthogonal frequency divisional multiplexing |
| 01/27/2011 | WO2011010960A1 Device and method for controlling damping of residual echo |
| 01/26/2011 | CN1531297B Method and system for resource delayed distribution |
| 01/26/2011 | CN101958984A Uplink and downlink voice drive processing method, device and system |
| 01/26/2011 | CN101958983A Interphone with monitoring and positioning functions |
| 01/25/2011 | US7877078 Power line communication networks and methods employing multiple widebands |
| 01/25/2011 | US7876892 Multiple echo cancellation using a fixed filter delay |
| 01/25/2011 | US7876718 Echo reduction |
| 01/20/2011 | US20110013766 Method and apparatus having echo cancellation and tone detection for a voice/tone composite signal |
| 01/19/2011 | CN101953145A Apparatus and method for computing control information for an echo suppression filter and apparatus and method for computing a delay value |
| 01/18/2011 | US7873159 Portable electronic apparatus |
| 01/18/2011 | US7872985 System for multi-frame alignment |
| 01/13/2011 | US20110007892 Portable Electronic Device |
| 01/11/2011 | US7869589 Piezoelectric user interface |
| 01/11/2011 | US7869587 Method and apparatus for canceling acoustic echo in a mobile terminal |
| 01/11/2011 | US7869199 Battery cover assembly for portable electronic device |
| 01/06/2011 | US20110002458 Method and apparatus for acoustic echo cancellation in voip terminal |
| 01/05/2011 | CN101937682A Method and device for handling receiving voice |
| 01/04/2011 | US7864949 Keyboard arrangement and mobile communication device incorporating the same |
| 01/04/2011 | US7864937 Common control of an electronic multi-pod conferencing system |
| 01/04/2011 | US7864718 Echo cancellation device for full duplex communication systems |
| 01/04/2011 | US7864035 System and method for determining whether a cordless handset is at a base unit |
| 12/30/2010 | US20100329440 Background Training for Conferencing or Telephony Acoustic Echo Canceller |
| 12/29/2010 | CN101933306A Method and apparatus for detecting and suppressing echo in packet networks |
| 12/29/2010 | CN101933088A Apparatus and method for computing filter coefficients for echo suppression |
| 12/28/2010 | US7860238 Communication terminal and additional function module thereof |
| 12/28/2010 | US7860237 Information input device, and electronic apparatus using the same |
| 12/28/2010 | US7860236 Method and system for echo cancellation in a network switch |
| 12/28/2010 | US7860235 Echo suppressor |
| 12/23/2010 | WO2010145278A1 Device and method for eliminating environmental noise |
| 12/23/2010 | US20100323619 Headset Adapter and Methods for Communicating Between a Hands-Free Headset and a Landline Telephone |
| 12/22/2010 | CN1802034B Practical sound signal pick-up device for acoustic echo cancelled system sound source |
| 12/21/2010 | US7856240 Distributed sound enhancement |
| 12/21/2010 | US7856098 Echo cancellation and control in discrete cosine transform domain |
| 12/21/2010 | US7856097 Echo canceling apparatus, telephone set using the same, and echo canceling method |
| 12/16/2010 | US20100316214 Integrated access device and overcurrent protection method |
| 12/15/2010 | EP2262216A1 Method for detecting a double-talking situation for a hands-free telephone device |
| 12/15/2010 | CN101917527A Method and device of echo elimination |
| 12/15/2010 | CN101917214A Method and device for controlling echo suppression in network |
| 12/14/2010 | US7853238 Powerline base station |
| 12/14/2010 | US7853237 Power supplying apparatus, power line communication apparatus, power line communication system, and power supplying method |
| 12/14/2010 | US7853009 Electronic device having a single-split hinge |
| 12/14/2010 | US7853008 Supply circuit for supplying a two-wire line |
| 12/14/2010 | US7853007 Conference terminal with echo reduction for a voice conference system |
| 12/14/2010 | CA2485071C Managing power in a line powered network element |
| 12/09/2010 | WO2010140084A1 Acoustic multi-channel cancellation |
| 12/08/2010 | EP2258109A1 Video serializer and deserializer with mapping conversion |
| 12/08/2010 | EP2258100A1 Single transducer full duplex talking circuit |
| 12/08/2010 | CN1607740B Modified affine projection algorithm for non-stationary signal |
| 12/07/2010 | US7848730 Method of controlling interference from a transmitter in one communication system to a receiver in another communication system |
| 12/07/2010 | US7848512 Personal audio device accessory |
| 12/07/2010 | US7848511 Telecommunications-terminal mute detection |
| 12/07/2010 | CA2624727C Method and apparatus for powering electronics associated with a telephone line twisted pair |
| 12/07/2010 | CA2559267C Internet facilitated emergency and general paging system |
| 12/02/2010 | US20100303228 Method and system for a dual echo canceller |
| 12/01/2010 | EP2257082A1 Background noise estimation in a loudspeaker-room-microphone system |
| 12/01/2010 | CN101227537B Broadband acoustics echo eliminating method |
| 11/30/2010 | US7844365 Field-mounted process device |
| 11/30/2010 | US7844050 Biaxial hinge device for mobile terminal and mounting mechanism thereof |
| 11/23/2010 | US7840243 Antenna arrangement in a mobile terminal apparatus |
| 11/23/2010 | US7840222 Reverse lookup of mobile location |
| 11/23/2010 | US7839997 Circuit for preventing unauthorized access to phones |
| 11/23/2010 | US7839996 Folding electronic device, connecting component and camera unit |
| 11/23/2010 | US7839994 Class A-B line driver for gigabit Ethernet |
| 11/23/2010 | US7839993 Echo canceling arrangement |
| 11/23/2010 | US7839881 Projection headset |
| 11/18/2010 | WO2010130928A1 Method for selecting one of two or more microphones for a speech-processing system such as a hands-free telephone device operating in a noisy environment |
| 11/18/2010 | WO2010130761A1 Noise suppression in a full-duplex audio communication terminal |
| 11/18/2010 | US20100290615 Echo canceller operative in response to fluctuation on echo path |
| 11/17/2010 | EP1070416B1 Teleconferencing system |
| 11/17/2010 | CN1902980B Audio system providing for filter coefficient copying |
| 11/17/2010 | CN101888455A Self-adaptive echo counteracting method for frequency domain |
| 11/16/2010 | US7835774 Removal of local duplication voice on conference calls |
| 11/16/2010 | US7835515 Telephone terminal with control of voice reproduction quality in the receiver |
| 11/10/2010 | CN101087320B Improved method and apparatus for detecting echo path changes in an acoustic echo canceller |
| 11/09/2010 | US7831447 Healthcare computer system |