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)
01/2008
01/10/2008US20080008311 Methods and apparatus for improving voice quality in an environment with noise
01/10/2008CA2593183A1 Partitioned fast convolution in the time and frequency domain
01/09/2008CN101102356A Hand-free device
01/09/2008CN100361485C Appts. and method for non-linear processing in communication system
01/09/2008CN100361117C Method in a digital network system for controlling the transmission of terminal equipment
01/08/2008CA2258618C Echo suppressor and non-linear processor of echo canceller
01/02/2008CN101098519A Embedded intelligent vehicle-carried hand-free telephone system and teledata connecting method
01/01/2008US7315620 Small-sized opening and closing device
01/01/2008US7315619 System and method for enhanced subjective stereo audio
01/01/2008US7315592 Common mode noise cancellation
01/01/2008US7315535 Information management system for bed data
12/2007
12/27/2007US20070297600 Controlling a device that is also linked to a computer system
12/27/2007US20070297527 Synchronization techniques in multipoint-to-point communication using orthogonal frequency division multiplexing
12/27/2007DE19704026B4 Türfreisprechanlage Door intercom
12/25/2007US7313233 Tone clamping and replacement
12/20/2007US20070291932 Telephone
12/20/2007US20070291930 Output stacking architecture for an amplifier
12/20/2007US20070291929 Methods and apparatus for performing subscriber line interface functions
12/20/2007US20070291907 Voice over internet protocol network test device and method
12/18/2007US7310522 Systems for synchronous multipoint-to-point orthogonal frequency division multiplexing communication
12/18/2007US7310425 Multi-channel frequency-domain adaptive filter method and apparatus
12/16/2007CA2591732A1 Intelligent audio limit method, system and node
12/13/2007US20070287406 Data Communication over a Power Line
12/13/2007US20070287405 Method and Device for Providing Broadband Over Power Line Communications
12/13/2007US20070286407 Terminal apparatus
12/13/2007US20070286406 Method and device for data communication
12/13/2007US20070286405 VoIP adapter for network interface device
12/13/2007US20070286404 Improved method and apparatus for detecting echo path changes in an acoustic echo canceller
12/13/2007US20070286240 Guard tones in a multi-point to point orthoginal frequency division multiplexing system
12/12/2007EP1864480A2 In-field upgrade managment of data capture systems
12/12/2007EP1864385A2 Communications systems and methods using wireline adapters
12/06/2007WO2007140467A2 Ethernet module
12/06/2007US20070280473 Echo canceller
12/06/2007US20070280472 Adaptive acoustic echo cancellation
12/06/2007US20070280471 Minimizing saturation caused by power transfer in a communication system transformer
12/06/2007US20070280099 Multiframe alignment in multipoint-to-point communication using orthogonal frequency division multiplexing
12/06/2007US20070279256 Reduced Keypad for Multi-Tap Input
12/04/2007US7305083 Echo canceller
11/2007
11/29/2007WO2006044691A3 Communications systems and methods using wireline adapters
11/29/2007US20070274516 Mode dial mechanism
11/29/2007US20070274515 Port identification system and method
11/29/2007US20070274514 Method and apparatus for acoustic echo cancellation in a communication system providing TTY/TDD service
11/29/2007US20070274202 Forward-looking tone allocation in multipoint-to-point communication using orthogonal frequency division multiplexing
11/29/2007US20070274200 Remote band scanning in multipoint-to-point orthogonal frequency division mulitiplexing communication
11/28/2007EP1859543A2 Mounting pedestal for a cellular signal enhancer
11/28/2007CN200983612Y Multi-channel echo elimination system based on SIMO channel blind recognition
11/27/2007US7302283 Portable digital communication apparatus having improved grip
11/27/2007US7302055 Discharging envelope detector
11/22/2007WO2005109404A3 Noise suppression based upon bark band weiner filtering and modified doblinger noise estimate
11/22/2007US20070269039 Method and apparatus for active reduction of speakerphone singing
11/22/2007DE102006023723A1 Hörvorrichtung mit Rückkopplungsdetektion und entsprechendes Verfahren Hearing device with feedback detection and corresponding method
11/21/2007EP1142288B1 Methods and apparatus for adaptive signal gain control in communications systems
11/21/2007CN101076204A Hearing aid equipment with feedback detection and corresponding method
11/20/2007US7298837 Cross-over voltage lock for differential output drivers
11/15/2007WO2007005206A3 Audio data stream synchronization
11/15/2007WO2006060441A3 Isolation of transmit and receive signals
11/15/2007US20070263858 Use-your-own-headset telephone
11/15/2007US20070263857 Interference canceller tap sharing in a communications transceiver
11/15/2007US20070263856 Wireless access point with temperature control system
11/15/2007US20070263855 Electrical receptacle with open corner region
11/15/2007US20070263854 Auto-swap call box device and method for automatically swapping line connection
11/15/2007US20070263853 System and method of enhanced caller-ID display using a personal address book
11/15/2007US20070263852 Method and apparatus for providing power to a network interface device via telephone lines
11/15/2007US20070263851 Echo detection and delay estimation using a pattern recognition approach and cepstral correlation
11/15/2007US20070263850 Integration of a microphone array with acoustic echo cancellation and residual echo suppression
11/15/2007US20070263849 Integration of a microphone array with acoustic echo cancellation and center clipping
11/15/2007US20070263848 Echo detection and delay estimation using a pattern recognition approach and cepstral correlation
11/15/2007US20070263847 Environmental noise reduction and cancellation for a cellular telephone communication device
11/15/2007US20070263846 Voice-identification-based signal processing for multiple-talker applications
11/15/2007US20070263845 Speakerphone with downfiring speaker and directional microphones
11/15/2007US20070263665 Systems for contention-based bandwidth requests in orthogonal frequency division multiplexing systems
11/14/2007EP1855457A1 Multi channel echo compensation using a decorrelation stage
11/14/2007EP1855456A1 Echo reduction in time-variant systems
11/14/2007EP0843934B1 Arrangement for suppressing an interfering component of an input signal
11/14/2007CN101072267A Audio communication system
11/14/2007CN101072266A Loudspeaker voice signal modulating device and method
11/13/2007US7295670 Howling suppression device and howling suppression method
11/08/2007US20070259644 Method and system for powerline local area networks over coaxial cable
11/08/2007US20070258580 Device And A Method For Feeding Electric Devices From A Telephone Line
11/08/2007US20070258579 Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus
11/08/2007US20070258578 Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus
11/08/2007US20070257779 Apparatuses and Methods for Driving a Doorbell System Peripheral Load at a Higher Current
11/07/2007EP1853087A1 Echo canceler
11/07/2007EP1584177B1 Non-linear acoustic echo canceller
11/06/2007CA2281924C An electronic voice mail message handling system
11/01/2007WO2007124117A1 Methods and systems for reducing acoustic echoes in communication systems
11/01/2007WO2006096231A3 Fast echo canceller reconvergence after tdm slips and echo level changes
11/01/2007US20070253500 Method for multiple use subchannels
11/01/2007US20070253323 Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing
11/01/2007US20070253322 System for multiple use subchannels
10/2007
10/31/2007EP1850573A1 Echo reduction method in a broadband audio signal
10/31/2007DE102004040696B4 Notrufeinrichtung Emergency equipment
10/31/2007CN101064756A Method for improving echo suppression resource use ratio
10/30/2007US7289628 Ozone functions handset
10/30/2007US7289626 Enhancement of sound quality for computer telephony systems
10/30/2007US7289610 Digital subscriber line service over loaded loops
10/25/2007WO2007120734A2 Environmental noise reduction and cancellation for cellular telephone and voice over internet packets (voip) communication devices
10/25/2007WO2007118583A1 Audio signal decorrelator
10/25/2007US20070249319 Power distribution communication system employing gateway including wired and wireless communication interfaces
10/25/2007US20070249318 Methods and systems for providing wireless communications through a utility pole mounted antenna
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