| Patents for H04M 9 - Arrangements for interconnection not involving centralised switching (8,105) |
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| 09/02/2009 | EP2095362A1 Telephone device to cancel background noise at the speaker |
| 09/02/2009 | CN101521015A Method for reducing sound echo, relevant echo eliminating device and speech device |
| 09/02/2009 | CN100536511C Telephone with improved capability and method for processing audio frequency signal therein |
| 09/02/2009 | CN100536510C Access audio frequency output through capturing service |
| 09/01/2009 | US7583952 Access pointer for interconnecting power line communication network and wireless network and method therefor |
| 09/01/2009 | US7583768 Apparatus for canceling intersymbol interference in semiconductor memory device and method thereof |
| 08/27/2009 | US20090213697 Wireless communication system, transmitting device, receiving device and information processing apparatus |
| 08/26/2009 | EP2092659A1 Method and arrangement for the adaptive filtering of signals |
| 08/26/2009 | EP1709788A4 Robust adaptive filter for echo cancellation |
| 08/26/2009 | EP1629658A4 Line powered network element |
| 08/25/2009 | USRE40881 Rotational split adaptor |
| 08/25/2009 | US7580518 Dual-axes hinge part for hinged components |
| 08/25/2009 | US7580509 Telephone hook switch using non-contact capacitive sensor and telephone using the same |
| 08/25/2009 | US7580347 Synchronization of remote units using multiple adjustments |
| 08/20/2009 | DE202008017438U1 Wohnungsstation für eine Türsprechanlage Home station for a door intercom |
| 08/19/2009 | CN201294570Y Echo elimination device for teleconference system |
| 08/19/2009 | CN100531274C Digital adaptive filter and acoustic echo canceller using the same |
| 08/18/2009 | US7577468 Exchangeable covers for radio communication terminals |
| 08/18/2009 | US7577248 Method and apparatus for echo cancellation, digit filter adaptation, automatic gain control and echo suppression utilizing block least mean squares |
| 08/18/2009 | US7577084 ISDN crosstalk cancellation in a DSL system |
| 08/13/2009 | US20090202063 Controlling Echo During Double-Talk in a Voice Conference |
| 08/13/2009 | DE102008039330A1 Vorrichtung und Verfahren zum Berechnen von Filterkoeffizienten zur Echounterdrückung Apparatus and method for computing filter coefficients for echo suppression |
| 08/12/2009 | EP2087749A1 Headset distributed processing |
| 08/12/2009 | EP1912601A4 Method and system for clear signal capture |
| 08/12/2009 | EP1714398B8 Echo canceller with interference-level controlled step size |
| 08/12/2009 | EP1629354A4 Function for controlling line powered network element |
| 08/11/2009 | US7574002 Mechanical key lock for portable electronic devices and portable electronic devices including the same |
| 08/11/2009 | US7574001 Internet protocol telephone system |
| 08/11/2009 | US7573231 Recharging terminal |
| 08/06/2009 | WO2009095161A1 Apparatus and method for computing filter coefficients for echo suppression |
| 08/06/2009 | US20090196413 Analog trunk and method for optimizing voice quality in analog trunk |
| 08/06/2009 | CA2713450A1 Apparatus and method for computing filter coefficients for echo suppression |
| 08/05/2009 | EP2084893A1 Circuit for reducing the acoustic echo for a hands-free device usable with a portable telephone |
| 08/05/2009 | CN201286130Y Audio uni-channel duplex communication circuit |
| 08/05/2009 | CN201286129Y Inter phone apparatus for bank |
| 08/05/2009 | CN101502091A Audio signal decorrelator |
| 08/05/2009 | CN101502090A In-field upgrade managment of data capture systems |
| 08/05/2009 | CN100524464C Adaptive filter method and apparatus for improving speech quality of mobile communication apparatus |
| 08/04/2009 | US7570978 Apparatus and method for preventing an unintentional activation of a mobile communication device |
| 08/04/2009 | US7570974 Bluetooth® enabled hearing aid |
| 08/04/2009 | US7570937 Comfort noise generator |
| 08/04/2009 | US7570758 Protective sleeve for telephone handsets |
| 08/04/2009 | US7570757 Tilt mechanism for communication device |
| 07/30/2009 | WO2009092709A1 Acoustic echo reduction |
| 07/30/2009 | WO2009092522A1 Apparatus and method for computing control information for an echo suppression filter and apparatus and method for computing a delay value |
| 07/30/2009 | CA2713127A1 Apparatus and method for computing control information for an echo suppression filter and apparatus and method for computing a delay value |
| 07/29/2009 | CN100521710C Echo canceller with reduced requirement for processing power |
| 07/28/2009 | US7567667 Inmate telephones having inmate-movable telephone bodies |
| 07/28/2009 | US7567666 Method and apparatus for crosstalk mitigation |
| 07/28/2009 | US7567660 Message pad subsystem for a software-based intercom system |
| 07/28/2009 | CA2473006C System and method for controlling a filter to enhance speakerphone performance |
| 07/23/2009 | US20090185674 Communication system |
| 07/23/2009 | DE202009003209U1 Türklingelsprechanlagen-Nachrichten-Aufzeichnungsgerät TNA Doorbell intercom message recorder TNA |
| 07/22/2009 | EP1685740A4 Protective cover assembly |
| 07/22/2009 | EP1658720A4 Ultra-wide band wireless/power-line communication system for delivering audio-video content |
| 07/22/2009 | EP1639791A4 A method for enhancing the acoustic echo cancellation system using residual echo filter |
| 07/22/2009 | CN101491072A Echo cancellation and noise reduction adaptation during ringing signal playback |
| 07/22/2009 | CN101489006A Voice communication method, apparatus and system |
| 07/22/2009 | CN100518223C Method and apparatus for reducing echo in up-link data |
| 07/21/2009 | US7564968 Voice containment device for a telephone |
| 07/21/2009 | US7564967 Electronic device with two-dimensional sliding cover and two-dimensional slide apparatus |
| 07/21/2009 | US7564966 Recognition of audio device in portable terminal |
| 07/21/2009 | US7564965 Wire communication terminal having LCD module |
| 07/21/2009 | US7564964 Echo canceller |
| 07/21/2009 | US7564963 Multi-handset telephone system |
| 07/16/2009 | WO2009088431A1 Method and apparatus for detecting and suppressing echo in packet networks |
| 07/16/2009 | DE102008029736B3 Door bell or door station for apartment station, comprises projection unit and projection surface, where projection unit comprises control unit, in which memory unit, projector and light reflection sensor are connected |
| 07/15/2009 | CN201274518Y Monitoring intercom apparatus for radiotherapy equipment |
| 07/15/2009 | CN100514996C Speech communication system, server used for the same, and reception relay device |
| 07/14/2009 | US7561867 Multi-unit power line communications system and method |
| 07/14/2009 | US7561687 Hinge assembly for a foldable electronic device |
| 07/14/2009 | US7561686 Mobile terminal |
| 07/14/2009 | US7561685 Handheld electronic device with keyboard |
| 07/14/2009 | US7561684 Mounting structure for an electroacoustic transducer |
| 07/14/2009 | US7561683 Method for measuring resistance for a subscriber line interface circuit using a protective circuit |
| 07/08/2009 | EP0988744B1 Acoustic echo canceler |
| 07/08/2009 | CN100512510C Device and method for processing speech |
| 07/08/2009 | CN100512356C Central server of monitoring and controlling system for apartment building |
| 07/07/2009 | US7558729 Music detection for enhancing echo cancellation and speech coding |
| 07/07/2009 | US7558385 Impedance adapter for a high-bandwidth transmission channel of a copper-wired terminal system |
| 07/07/2009 | US7557676 Signal transmission circuit, electronic device, cable, and connector |
| 07/02/2009 | WO2009082194A1 Non linear acoustic feedback suppression in a telephone device |
| 07/02/2009 | US20090168993 Echo Canceler |
| 07/01/2009 | EP1700465B1 System and method for enchanced subjective stereo audio |
| 06/30/2009 | US7555120 Slide type mobile terminal |
| 06/30/2009 | US7555119 Device for automatically lifting a cover of mobile phone by pressing |
| 06/30/2009 | US7555118 Microphone coupler for a communication device |
| 06/30/2009 | US7555117 Path change detector for echo cancellation |
| 06/30/2009 | US7555116 Real time processing and management method for cancelling out the echo between a loudspeaker and a microphone of a computer terminal |
| 06/30/2009 | US7554933 Echo cancellation device for full duplex communication systems |
| 06/25/2009 | WO2009078733A1 A method and system for clock drift compensation |
| 06/25/2009 | US20090161862 Angle Variable Mechanism and Desktop Apparatus |
| 06/25/2009 | US20090161861 Desktop apparatus |
| 06/25/2009 | US20090161835 Method and apparatus for identifying a fault in a communication path |
| 06/23/2009 | US7552050 Speech recognition system and method utilizing adaptive cancellation for talk-back voice |
| 06/23/2009 | US7551735 Housing for an electronic device, and method for making the same |
| 06/18/2009 | US20090156159 Communication system and method in ship area network |
| 06/18/2009 | US20090154692 Voice processing apparatus, voice processing system, and voice processing program |
| 06/18/2009 | US20090154380 Echo Cancellation For A Packet Voice System |
| 06/18/2009 | DE102007059934A1 Domestic communication system, has nearby area-sensor switching display from active operating condition into another active operating condition, where display displays surfaces representing doorbell buttons assigned to house owner name |