| Patents for H04M 9 - Arrangements for interconnection not involving centralised switching (8,105) |
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| 09/29/2011 | DE102010016181A1 Connection device for telephone station at building wall for contacting network cable of network installation, has signal line device for forwarding signals between contact terminals and plug-in connection |
| 09/29/2011 | DE102010016180A1 Door intercommunication system for use in e.g. office building, has concierge station selectively establishing video- and/or voice communication to door- and/or home stations during connection establishment of communication |
| 09/28/2011 | CN201995005U 消除麦克风回声的结构 Structure echo canceling microphone |
| 09/28/2011 | CN101300822B Isolation of transmit and receive signals |
| 09/27/2011 | US8027464 Holding apparatus for accommodating a mobile telephone |
| 09/27/2011 | US8027463 Fixed telephone set capable of preventing howling and temperature rise of a handset |
| 09/27/2011 | US8027461 Systems and methods for splitting telecommunication signals with reduced noise |
| 09/21/2011 | CN1973484B Methods and apparatus for provisioning phantom power to remote devices based on admission control |
| 09/21/2011 | CN102196109A Residual echo detection method and system |
| 09/21/2011 | CN102195674A Echo cancellation circuit |
| 09/20/2011 | US8024019 Portable information terminal |
| 09/20/2011 | US8023642 Method for extending ethernet over twisted pair conductors and to the telephone network and plug-in apparatus for same employing standard mechanics |
| 09/20/2011 | US8023641 Spectral domain, non-linear echo cancellation method in a hands-free device |
| 09/14/2011 | EP1584150B1 Method and apparatus for digital subscriber line access multiplexer stacking |
| 09/14/2011 | CN102185992A Bidirectional active denoising device for mobile phone |
| 09/14/2011 | CN102185991A Echo cancellation method, system and device |
| 09/14/2011 | CN102185990A Master-slave digital collinear communication system and communication method thereof |
| 09/14/2011 | CN101242457B Realization method for virtual city call commentator |
| 09/13/2011 | US8019077 Methods and apparatus for low voltage control of a subscriber line interface circuit |
| 09/13/2011 | US8019076 Portable speakerphone device and subsystem utilizing false doubletalk detection |
| 09/13/2011 | US8019075 Hybrid echo canceller controllers |
| 09/07/2011 | CN201967002U 啸叫抑制系统 Howling suppression system |
| 09/06/2011 | US8014519 Cross-correlation based echo canceller controllers |
| 09/06/2011 | US8014518 Patch panel apparatus and system including patch cord path tracing |
| 09/06/2011 | US8014517 Method and apparatus for enhanced convergence of the normalized LMS algorithm |
| 09/06/2011 | US8014516 Method and apparatus for echo cancellation |
| 09/06/2011 | US8014412 Power sourcing equipment having bipolar junction transistor for controlling power supply and supporting AC disconnect-detection function |
| 09/01/2011 | US20110211683 Method and device by telephone entry systems |
| 08/31/2011 | CN102172008A Compact beamforming microphone assembly |
| 08/30/2011 | US8009825 Signal processing |
| 08/24/2011 | CN201947352U 移动多媒体广播回声抵消模组 Mobile Multimedia Broadcasting echo cancellation module |
| 08/24/2011 | CN1838705B Echo prevention circuit, digital signal processing circuit and filter factor setting method |
| 08/24/2011 | CN102165521A Multiple microphone switching and configuration |
| 08/24/2011 | CN102164210A Systems and methods for echo cancellation and echo suppression |
| 08/24/2011 | CN101521015B Method for reducing sound echo, relevant echo eliminating device and speech device |
| 08/23/2011 | US8005208 Sealing assembly and sliding cover mechanism using the sealing assembly |
| 08/23/2011 | US8005207 Microphone coupler system for a communication device |
| 08/23/2011 | US8005206 VDSL splitter |
| 08/23/2011 | US8005205 Protective plug for distribution frame devices in telecommunications and data technology |
| 08/23/2011 | US8004556 Conference link between a speakerphone and a video conference unit |
| 08/16/2011 | US8000466 Method and apparatus for multiparty collaboration enhancement |
| 08/16/2011 | US8000349 Telephone communication system over a single telephone line |
| 08/11/2011 | US20110194685 Method and system for nonlinear acoustic echo cancellation in hands-free telecommunication devices |
| 08/10/2011 | CN1492646B Method for implementing audio frequency telephone and central change-over processor |
| 08/09/2011 | US7995747 Weather guard |
| 08/09/2011 | US7995745 Structure and method for echo reduction without loss of information |
| 08/09/2011 | US7995460 Control interface protocol for telephone sets for a satellite telephone system |
| 08/09/2011 | US7995454 Systems and method for orthogonal frequency divisional multiplexing |
| 08/04/2011 | WO2011093344A1 Line switching device and interphone system provided with same |
| 08/04/2011 | WO2011092699A1 Usage of speaker as microphone for sound enhancement |
| 08/03/2011 | EP2352274A2 Delay estimator |
| 08/03/2011 | EP2352237A1 Adaptive filter and echo canceller having same |
| 08/03/2011 | CN101317436B Voice information processing device, and wiring system using the same device |
| 08/02/2011 | US7991149 Information input device, and electronic apparatus using same |
| 08/02/2011 | US7991148 Display cover and case for a communication device |
| 08/02/2011 | US7991147 Handset device with laminated architecture |
| 08/02/2011 | US7991146 Anti-howling structure |
| 08/02/2011 | CA2590745C Improved method and apparatus for detecting echo path changes in an acoustic echo canceller |
| 07/28/2011 | US20110183642 Power line communication apparatus and power line communication method |
| 07/27/2011 | EP2348753A1 Sound emission and collection device, and sound emission and collection method |
| 07/27/2011 | CN1780165B Echo eliminator and elimination method |
| 07/26/2011 | US7986982 Handset device |
| 07/26/2011 | US7986802 Portable electronic device and personal hands-free accessory with audio disable |
| 07/26/2011 | US7986777 Stand for desktop telephone |
| 07/21/2011 | WO2011087376A1 Apparatus and associated methodology for suppressing an acoustic echo |
| 07/21/2011 | WO2011085628A1 Apparatus and method for cancelling echo in joint time domain and frequency domain |
| 07/21/2011 | US20110176647 Circuit, system and method for multiplexing signals with reduced jitter |
| 07/20/2011 | CN1813417B Multiple channel interference cancellation |
| 07/20/2011 | CN102132491A Method for determining updated filter coefficients of an adaptive filter adapted by an lms algorithm with pre-whitening |
| 07/20/2011 | CN102131014A Device and method for eliminating echo by combining time domain and frequency domain |
| 07/19/2011 | US7983908 Noise-canceling device for voice communication terminal using configurable multiple digital filters |
| 07/19/2011 | US7983413 VoIP accessory |
| 07/19/2011 | US7983141 Synchronized multipoint-to-point communication using orthogonal frequency division |
| 07/19/2011 | US7980952 Storage medium having information processing program stored thereon and information processing apparatus |
| 07/14/2011 | US20110170683 Systems and Methods for Echo Cancellation and Echo Suppression |
| 07/12/2011 | US7978845 Powered patch panel |
| 07/07/2011 | WO2011079570A1 Terminal noise suppression device, method and communication terminal |
| 07/06/2011 | CN201893846U Confidential type telephone shared distribution module with multiple switching circuits |
| 07/06/2011 | CN102118530A Method and device for echo cancellation |
| 06/29/2011 | EP1943827B1 Method and apparatus for powering electronics associated with a telephone line twisted pair |
| 06/29/2011 | CN101459727B Voice synchronization system and method for mobile phone |
| 06/29/2011 | CN101014073B Method, system and equipment for realizing echo cancellation |
| 06/28/2011 | US7970374 Multi-wideband communications over power lines |
| 06/28/2011 | US7970126 Communication terminal with movable display |
| 06/28/2011 | US7970125 Output stacking architecture for an amplifier |
| 06/28/2011 | US7970124 Adaptive gain control based on echo canceller performance information |
| 06/28/2011 | US7970123 Adaptive coupling equalization in beamforming-based communication systems |
| 06/28/2011 | US7970122 Circuit method and system for transmitting information |
| 06/23/2011 | US20110150210 Distributed VAD control system for telephone |
| 06/23/2011 | US20110150209 Full duplex telephone system employing automatic level control for improved digital signal processing of audio signals |
| 06/23/2011 | US20110149815 Method and apparatus for providing echo cancellation in a network |
| 06/21/2011 | US7966046 Mobile communication and/or gaming terminal |
| 06/21/2011 | US7965835 Three-dimensional multi-foldable device |
| 06/21/2011 | US7965834 Method and system for clear signal capture |
| 06/15/2011 | EP1625740B1 Microphone circuit having adjustable directivity pattern for reducing loudspeaker feedback and method of operating the same |
| 06/15/2011 | CN1668058B Recursive least square difference based subband echo canceller |
| 06/14/2011 | US7962118 Method for transmitting a signal on a power line network, transmitting unit, receiving unit and system |
| 06/14/2011 | US7961869 Hands-free voice communication apparatus with speakerphone and earpiece combo |
| 06/14/2011 | US7961848 Internet facilitated emergency and general paging system |
| 06/14/2011 | US7961846 Interface device for testing a telecommunication circuit |