| Patents for H04M 9 - Arrangements for interconnection not involving centralised switching (8,105) |
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| 01/25/2005 | US6847930 Analog voice activity detector for telephone |
| 01/20/2005 | WO2004055996A3 Fault characterization using information indicative of echo |
| 01/20/2005 | US20050014535 System and method for speaker-phone operation in a communications device |
| 01/20/2005 | DE10328501A1 Electric installation appliance with integrated speech chip with speech memory for selective connecting to microphone or loudspeaker under control of energizing electronic, with chip, microphone and loudspeaker |
| 01/19/2005 | EP1499098A1 Video doorphone |
| 01/19/2005 | EP1186157B1 Symmetry based subband acoustic echo cancellation |
| 01/19/2005 | CN1567659A Switching communication socket capable of changing angle |
| 01/19/2005 | CN1185851C Reconfigurable on-demand telephone and data line system |
| 01/18/2005 | US6845156 System for reducing distortion in a line powered modulator |
| 01/13/2005 | US20050009580 Holder for a small-sized acoustic element, and mounting structure for the holder |
| 01/13/2005 | US20050008145 Echo cancellation filter |
| 01/13/2005 | US20050008144 Echo cancellation filter |
| 01/13/2005 | US20050008143 Echo canceller having spectral echo tail estimator |
| 01/13/2005 | US20050008033 Telephone communication system over a single telephone line |
| 01/13/2005 | US20050007451 Premises entry security system |
| 01/11/2005 | US6842516 Digital adaptive filter and acoustic echo canceller using the same |
| 01/06/2005 | WO2005002184A2 A method for enhancing the acoustic echo cancellation system using residual echo filter |
| 01/06/2005 | WO2005002183A2 Statistical adaptive-filter controller |
| 01/06/2005 | WO2004100602A3 Method and system for communication enhancement ina noisy environment |
| 01/06/2005 | US20050004796 Audibility enhancement |
| 01/04/2005 | US6839426 Echo cancellor |
| 12/30/2004 | US20040264687 System and method for cooling of network interface device |
| 12/30/2004 | US20040264686 Statistical adaptive-filter controller |
| 12/30/2004 | US20040264685 Estimation of DSL telephone loop capability using CAZAC sequence |
| 12/30/2004 | US20040264684 Time domain reflected signal measurement using statistical signal processing |
| 12/29/2004 | WO2004086555A3 Multi-band omni directional antenna |
| 12/29/2004 | WO2004004297A8 Stationary spectral power dependent audio enhancement system |
| 12/28/2004 | US6836547 Protecting an echo canceller against random transitions in echo paths |
| 12/23/2004 | WO2004112370A1 Echo processing method and device |
| 12/23/2004 | US20040258236 Subscriber line driver and termination |
| 12/23/2004 | DE10321625A1 Signal transfer device for transfer of signals in opposite directions along parallel transfer paths, has signal processing units with associated auxiliary signal processing units for each path and a common regulating unit |
| 12/22/2004 | EP1489879A2 Holder for a small-sized acoustic element, and mounting structure for the holder |
| 12/21/2004 | US6834108 Method for improving acoustic noise attenuation in hand-free devices |
| 12/16/2004 | WO2004110031A2 Current sense circuit in a line powered network element |
| 12/16/2004 | WO2004109439A2 Element management system for managing line-powered network elements |
| 12/16/2004 | WO2004098088A3 Multiple channel interference cancellation |
| 12/16/2004 | US20040252828 Rotational split adaptor |
| 12/16/2004 | US20040252827 Echo canceler, echo canceling method, and recording medium |
| 12/16/2004 | US20040252826 Echo canceller and a method of cancelling echo |
| 12/16/2004 | DE202004015284U1 Portable two-way intercom device e.g. for household, uses conventional intercom device fitted with transmitter |
| 12/16/2004 | DE10323226A1 Verfahren zum Einrichten einer Hauskommunikationsanlage Method for establishing a House communication system |
| 12/16/2004 | CA2527149A1 Line powered network element |
| 12/15/2004 | CN1180602C Method and apparatus for space-time echo cancellation |
| 12/15/2004 | CN1180600C Wireless paging system |
| 12/09/2004 | WO2004107724A2 Loudspeaker-microphone system with echo cancellation system and method for echo cancellation |
| 12/09/2004 | WO2004107588A2 Method and device for frequency translation in powerline communications |
| 12/09/2004 | US20040247113 Key telephone set having interchangeable units |
| 12/09/2004 | US20040247111 Echo cancellation/suppression and double-talk detection in communication paths |
| 12/09/2004 | US20040247110 Methods and apparatus for improving voice quality in an environment with noise |
| 12/09/2004 | DE10253308B4 Verfahren zur Inbetriebnahme einer Hauskommunikationsanlage sowie mit diesem Verfahren in Betrieb zu nehmende Hauskommunikationsanlage A method for starting a home communication system, with this method to be taken into operation House communication system |
| 12/07/2004 | US6829353 Mechanism for preventing clipping of pulse metering signals in telephone line card channels |
| 12/07/2004 | CA2358044C Method for handling far-end speech effects in hands-free telephony systems on acoustic beamforming |
| 12/02/2004 | WO2004105371A1 Microphone circuit having adjustable directivity pattern for reducing loudspeaker feedback and method of operating the same |
| 12/02/2004 | WO2004105370A1 Communication control device for interphone and the interphone |
| 12/02/2004 | WO2004105357A2 Dynamic balance control for telephone |
| 12/02/2004 | US20040242267 Low-power hand-held transaction device |
| 12/02/2004 | US20040242185 Method and device for frequency translation in powerline communications |
| 12/02/2004 | US20040240664 Full-duplex speakerphone |
| 12/02/2004 | US20040240663 Current sense circuit in a line powered network element |
| 12/01/2004 | EP0919096B1 Method for cancelling multichannel acoustic echo and multichannel acoustic echo canceller |
| 11/30/2004 | US6826279 Base band echo cancellation using laguerre echo estimation |
| 11/25/2004 | US20040234084 Microphone circuits having adjustable directivity patterns for reducing loudspeaker feedback and methods of operating the same |
| 11/25/2004 | US20040234069 Dynamic balance control for telephone |
| 11/24/2004 | EP1480432A1 Method for programming an intercom device |
| 11/24/2004 | EP1480409A2 Digital video recorder having an internet phone and communication method thereof |
| 11/24/2004 | EP0861531B1 Acoustic echo elimination in a digital mobile communications system |
| 11/23/2004 | US6822699 Cathode ray tube and method of displaying picture |
| 11/18/2004 | WO2004100602A2 Method and system for communication enhancement ina noisy environment |
| 11/18/2004 | US20040228474 Echo-canceling apparatus, an echo-canceling method, a program and a recording medium |
| 11/18/2004 | US20040228473 Method and system for measurement of the delay through a network link bounded by an echo canceller |
| 11/18/2004 | US20040228472 Method and apparatus for controlling the transmit level of telephone terminal equipment |
| 11/18/2004 | US20040228455 Dynamic range compression modification of a digital telephone switch for individual hearing characteristics |
| 11/17/2004 | EP1476984A1 Localization of an ip telecommunications terminal over a lan |
| 11/17/2004 | EP0992151B1 Method and device for suppressing echo in a hands free device such as a telephone |
| 11/11/2004 | WO2004098088A2 Multiple channel interference cancellation |
| 11/11/2004 | DE10318598A1 Verfahren und Vorrichtung zur Echokompensation bei Sprachsignalen Method and device for echo cancellation for speech signals |
| 11/10/2004 | EP1475997A2 Method and system for communication enhancement in a noisy environment |
| 11/10/2004 | EP1475946A1 Method and apparatus for acoustic echo cancellation by an adaptive filter |
| 11/10/2004 | CN1545368A Device and method for processing speech |
| 11/09/2004 | US6816591 Voice switching system and voice switching method |
| 11/04/2004 | WO2004095823A1 Automatic speak-up indication for conference call attendees |
| 11/04/2004 | US20040218756 ISDN crosstalk cancellation in a DSL system |
| 11/04/2004 | US20040218755 Echo canceller with reduced requirement for processing power |
| 11/03/2004 | EP1472856A1 System and method for controlling a filter to enhance speakerphone performance |
| 11/02/2004 | US6813351 Method and apparatus for echo cancellation that suppresses echo leak through |
| 10/28/2004 | WO2004093328A2 Bidirectional distributed amplifier |
| 10/28/2004 | WO2003020006A8 Circuit and method for acoustic source directional pattern determination utilizing two microphones |
| 10/28/2004 | US20040213402 Automatic speak-up indication for conference call attendees |
| 10/27/2004 | EP1471504A2 Method and device to compensate echo in speech signals |
| 10/27/2004 | CN1541456A Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer appts. and transfer function calculation appts. |
| 10/27/2004 | CN1173487C Echo suppressor and non-linear processor of echo canceller |
| 10/21/2004 | US20040208312 Echo canceling method, echo canceller, and voice switch |
| 10/21/2004 | US20040208311 Echo cancelling circuit, IP telephone and curl cord |
| 10/20/2004 | CN1172476C Fixed user's unit |
| 10/19/2004 | US6807261 Digital key telephone set and digital key telephone system |
| 10/14/2004 | US20040202311 Bidirectional distributed amplifier |
| 10/13/2004 | EP1467547A2 Echo cancelling circuit, IP telephone and curl cord |
| 10/12/2004 | US6804350 Method and apparatus for improving echo cancellation in non-voip systems |
| 10/12/2004 | US6804203 Double talk detector for echo cancellation in a speech communication system |
| 10/12/2004 | CA2260978C Processing device network |