|
Match
|
Document |
Document Title |
|
|
7512083 |
Single chip multi-antenna wireless data processor
A single chip integrated circuit wireless data processor demodulates N separate data signals from M separate antennas simultaneously. The multi-antenna processor can be coupled to a baseband...
|
|
|
7483400 |
Managing a packet switched conference call
The invention relates to a method for managing a packet switched, centralized conference call between a plurality of terminals 13 . In order to enable an enhancement of the user comfort, it is...
|
|
|
7415499 |
Method and apparatus for listening for incoming calls on multiple port/socket combinations
In one embodiment, the invention provides a method comprising loading a set of transport components into a memory; initializing each transport component of the set of transport components to listen...
|
|
|
7397772 |
Method and apparatus for acoustic echo cancellation in a communication system providing TTY/TDD service
A method and apparatus are disclosed for canceling acoustic echo generated during transmission of text information in a communication system supporting a TTY/TDD service. When a mobile-to-land call...
|
|
|
7305216 |
Transmitting and receiving arrangement with interference signal suppression control
A transmitting and receiving arrangement is disclosed having a transmission path, a reception path, and a control device for suppression of interference signals which are produced by crosstalk from...
|
|
|
7174192 |
Method for controlling a hands free system, radio apparatus, and hands free apparatus
A radio apparatus, to be used as a first ending node of a communication network, is connectable to a hands-free apparatus by a local radio link to form a hands-free system. A call made on the...
|
|
|
7126954 |
Virtual gateway
A virtual gateway bridges voice and related signaling traffic between multiple endpoints behind the same or different Network Address Translation devices or firewalls or neither. The virtual...
|
|
|
7068780 |
Hybrid echo canceller
Systems and methods for reducing transmit echo in a transceiver are disclosed. A hybrid echo canceller includes a limited tap length FIR filter to cancel short-term echo, while an interpolated...
|
|
|
6944137 |
Method and apparatus for a talkgroup call in a wireless communication system
In a wireless code-division multiple access (CDMA) system ( 100 ), a talkgroup ( 101 ) of subscriber units is provided. A sub-talkgroup ( 102 ) of subscriber units, forming a part of the talkgroup...
|
|
|
6839734 |
Multimedia communications software with network streaming and multi-format conferencing
Computers, particularly personal computers, have become everyday communications devices, nearly as common as telephones and televisions. A big reason for this is the expansion of computer networks,...
|
|
|
6654455 |
IP conference telephone system compatible with IP-PBX systems
An IP (Internet Protocol) conference telephone system feasible for an IP-PBX (Private Branch Exchange) includes a communication control connected to an IP network. When a connection for a...
|
|
|
6546007 |
Time-slot interchanger that controls both time-slot access and signal-processing features
A time-slot interchanger (TSI 100 ) is used to control both time-slot access and distribution of signals to physical or virtual signal-processing circuits ( 106-116 ). The TSI includes a control...
|
|
|
6466550 |
Distributed conferencing system utilizing data networks
A distributed packet-based audio conferencing system, method for packet-based audio conferencing, and a transceiver for use in such conferencing are disclosed. The system uses a collection of...
|
|
|
5828657 |
Half-duplex echo canceler training using a pilot signal
A far-end modem transmits a "pilot tone" during the time that a near-end modem is training its echo canceler. Correspondingly, the near-end modem is modified to notch, or filter, out this pilot...
|
|
|
5825753 |
Echo canceler gain tracker for cellular modems
A fast response gain tracker operates to adjust the magnitude of an echo cancellation signal. The latter signal is developed from an echo canceler. The fast response gain tracker provides an...
|
|
|
5825754 |
Filter and process for reducing noise in audio signals
A noise reduction filter (28) is provided. The noise reduction filter (28) comprises a signal analysis block (30). The signal analysis block (30) is operable to receive an input audio signal and to...
|
|
|
5724416 |
Normalization of calling party sound levels on a conference bridge
A conference call sound level balancing method and system for selectively muting a conferee whose sound environment is loud enough to dominate other conferees of a conference call. The method is...
|
|
|
5390177 |
Conferencing arrangement for compressed information signals
A conferencing bridging technique for compressed information signals which monitors the signal energy transmitted by each conferee. When there is only one conferee speaking, the summing circuit in...
|
|
|
5260938 |
Switching system comprising a conference arrangement
A telephone switching system, or teleconferencing arrangement, in which each participant hears all the other speakers but does not hear his own voice. The speech intensity of each participant is...
|
|
|
5007049 |
Electronic exchange having a conference telephone communication function and conference telephone communication method
An improved (N - 1) adding operation conference telephone communication method through an electronic exchange in which the telephone communication signals on speakers in a time sharing multiplexed...
|
|
|
4339818 |
Digital multiplexer with increased channel capacity
A digital multiplexer accommodates a large number of voice channels per digital channel through use of an improved statistical coding technique. Analog information on the voice channels is encoded...
|
|
|
4253000 |
Method and system for reducing conference bridge oscillations
Undesired oscillations in a communications conferencing network are reduced and/or eliminated by frequency shifting signals passing through the conferencing network by a small amount for each pass...
|
|
|
4119807 |
Digital time division multiplex switching system
A pulse code modulation (PCM) time division multiplex (TDM) telephone exchange to which n telephone lines are sequentially connected during n respective sequential time slots. An unlimited number...
|
|
|
3997730 |
Time division conference circuit
A conference circuit is disclosed for use in a time division switching system which has an incoming and an outgoing time division bus connected by a summing amplifier. During a conference call, a...
|
|
|
3958084 |
Conferencing apparatus
A method and apparatus for providing improved telephonic conferences is presented. A speaker is selected for each conferee from the signals of the other conferees. The peak values of the speaker...
|
|
|
3835259 |
TIME DIVISION CONFERENCE HYBRID CIRCUIT
In a time division communication system a conference connection among a plurality of stations is established utilizing station associated hybrid circuits connected to an incoming common bus and an...
|
|
|
3828146 |
TIME DIVISION CONFERENCE HYBRID CIRCUIT
In a time division communication system a conference connection among a plurality of stations is established utilizing station associated hybrid circuits connected to an incoming common bus and an...
|
|
|
3617643 |
TIME DIVISION SWITCHING SYSTEM EMPLOYING COMMON TRANSMISSION HIGHWAYS
In a time division switching system, speech samples from a subscriber station are first encoded and then stored, in digital coded form in a register in a transceiver. The output of this register is...
|