Patents
Sitemap › H04 - Electric communication technique › H04M - Telephonic communication › H04M 9 - Arrangements for interconnection not involving centralised switching
Patents for H04M 9 - Arrangements for interconnection not involving centralised switching (8,105)
08/2010
08/11/2010EP2215820A1 A method and arrangement for echo cancellation of voice signals
08/11/2010EP2215819A1 Dynamic current limits
08/11/2010CN1914819B Echo canceller with interference-level controlled step size
08/11/2010CN101800821A Medical communication calling equipment
08/10/2010US7773745 Opening mechanism having a solid body, a movable body and a guide mechanism for sliding the movable body with respect to the solid body
08/10/2010US7773743 Integration of a microphone array with acoustic echo cancellation and residual echo suppression
08/10/2010US7773742 Echo canceller
08/10/2010US7773741 Voice and data exchange over a packet based network with echo cancellation
08/10/2010US7773537 Ranging and round trip delay timing adjustment in a multi-point to point bidirectional communication system
08/05/2010US20100197232 Echo Canceler Circuit And Method
08/05/2010US20100195817 Reducing the Feedback Overhead During Crosstalk Precoder Initialization
08/05/2010US20100195816 Method and device for a data processing and communication system comprising such device
08/05/2010US20100195815 Echo removing apparatus
08/05/2010US20100195810 Security system with two-way communication and video
08/04/2010CN101795332A Communication method and system
08/03/2010US7769186 System and method facilitating acoustic echo cancellation convergence detection
08/03/2010US7769162 Acoustic echo canceller with multimedia training signal
07/2010
07/29/2010US20100191543 Healthcare Computer System
07/28/2010CN101790013A Echo cancellation algorithm
07/28/2010CN101789797A Wireless communication anti-interference system
07/27/2010US7764943 Overhead and underground power line communication system and method using a bypass
07/27/2010US7764799 Audio system providing for filter coefficient copying
07/27/2010US7764784 Handset cradle
07/27/2010US7764783 Acoustic echo cancellation with oversampling
07/27/2010US7764775 Distributed intercom system
07/22/2010US20100183141 Reducing far-end crosstalk in chip-to-chip communication systems and components
07/22/2010US20100183140 Method and Apparatus for Double-Talk Detection
07/21/2010CN101785290A Acoustic echo cancellation based on noise environment
07/20/2010USRE41445 Arrangement for suppressing an interfering component of an input signal
07/20/2010US7761079 Power line communication device and method
07/20/2010US7760869 Method and apparatus for controlling the transmit volume level of a speakerphone
07/20/2010US7760673 Selectively adaptable far-end echo cancellation in a packet voice system
07/15/2010US20100177884 Echo presence determination in voice conversations
07/14/2010CN201528372U Interphone with electric rod
07/14/2010CN101778183A Method and device for suppressing residual echo
07/13/2010US7756266 Device for voltage-noise rejection and fast start-up
07/13/2010US7756260 Method for providing features to the user of a telephone, a central unit and a telecommunication system therefor
07/13/2010US7756060 Tone allocation in multipoint-to-point communication using orthogonal frequency division multiplexing
07/13/2010US7755611 Decorative concealed audio-visual interface apparatus and method
07/07/2010CN201523411U Dual-display multi-frequency interphone
07/07/2010CN201523410U Multiband interphone
07/06/2010US7751795 Wired, wireless, infrared, and powerline audio entertainment systems
07/06/2010US7751650 Image processing device image processing program and image processing method
07/06/2010US7751555 Angle variable mechanism and desktop apparatus
07/06/2010US7751543 System and method for button-independent dispatch communications
07/06/2010US7750495 Power line adapter and method of controlling power line adapter operated in power-saving mode
07/01/2010WO2010073181A1 Determining an acoustic coupling between a far-end talker signal and a combined signal
07/01/2010US20100166173 Subscriber line interface circuitry with integrated serial interfaces
06/2010
06/29/2010US7747010 Telephony software client application for handling the insertion and removal of logical audio devices
06/29/2010US7747009 Retaining device for mobile user devices
06/29/2010US7747008 Voice absorber for portable telephonic devices
06/29/2010US7747007 Protective cover for portable communication device
06/29/2010US7747006 Handset and base unit with semi-translucent finish
06/29/2010US7747005 Opening and closing mechanism, and electronic device
06/29/2010US7747004 Devices and methods for acoustic usability
06/29/2010US7747003 Wireless headset apparatus and methods
06/29/2010US7747002 Method and system for stereo echo cancellation for VoIP communication systems
06/29/2010US7747001 Speech signal processing with combined noise reduction and echo compensation
06/29/2010US7747000 Subscriber line driver with equalizer
06/29/2010US7746995 Telephone control system
06/24/2010US20100156677 Reduced keypad for multi-tap input
06/22/2010US7742593 Telephone handset for a broadband telecommunication system
06/22/2010US7742592 Method and device for removing echo in an audio signal
06/22/2010US7742387 Cancellation of crosstalk energy in communication loops
06/22/2010US7742386 Multiple channel interference cancellation
06/17/2010WO2010066496A1 Delay estimator
06/17/2010WO2009070073A8 A method and arrangement for echo cancellation of voice signals
06/17/2010CA2746794A1 Delay estimator
06/16/2010EP2197190A1 Delay estimator
06/16/2010CN1750124B Bandwidth extension of band limited audio signals
06/16/2010CN1670823B Method for detecting and reducing noise from a microphone array
06/16/2010CN101742013A System and method for simulating user line access multiplexing
06/16/2010CN101741491A Audio system and main box
06/16/2010CN101175122B Apolegamy method of voice reinforced channel in communication network
06/15/2010US7738656 Portable terminal device
06/15/2010US7738655 Interference canceller tap sharing in a communications transceiver
06/15/2010US7738654 Isolation of transmit and receive signals
06/15/2010US7738653 Method for selecting impedance setting for loop start trunk line
06/10/2010WO2010065501A1 Systems and methods for double-talk detection in acoustically harsh environments
06/09/2010EP2194511A1 Access control system
06/09/2010CN101729096A Application of echo cancellation technology in transmitting voice service by circuit simulation equipment
06/09/2010CN101208953B Doorphone system with imaging function, audio terminal constituting the system, video terminal, home gateway device, and doorphone adapter
06/08/2010US7734363 Technique for independent ground fault detection of multiple twisted pair telephone lines connected to a common electrical power source
06/08/2010US7734040 Modular housing system for outside plant telecommunications equipment
06/08/2010US7734039 Telephone apparatus
06/08/2010US7734037 Remote terminal unit connector
06/08/2010US7734036 Dynamic attenuation method and apparatus for optimizing voice quality using echo cancellers
06/08/2010US7734035 Method and apparatus for soft-response echo suppression
06/03/2010US20100135483 Systems and methods for double-talk detection in acoustically harsh environments
06/03/2010US20100135481 Echo mitigation in a conference call
06/02/2010CN201499201U Data communication device of caller interphone extension
06/02/2010CN201499200U Data communication device of caller interphone mainframe
06/02/2010CN1810019B Statistical adaptive-filter controller
06/02/2010CN101719969A Method and system for judging double-end conversation and method and system for eliminating echo
06/02/2010CN101222555B System and method for improving audio speech quality
06/02/2010CN101217605B A bus-mode paging telephone
06/01/2010US7729684 Combined global positioning system receiver and radio
06/01/2010US7729493 Cover for mobile computer
06/01/2010US7729492 Portable communication device having a multi-axis hinge assembly
06/01/2010US7729491 Method and device for amplifying a reception signal
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