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4796293 |
Enhanced dedicated teleconferencing system
A method and apparatus for enhancing the operation of a teleconferencing system, utilizes a programmed service computer to drive a bridge which has a plurality of ports for establishing...
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4758887 |
Conference table
Picture-screen apparatus are integrated into a conference table to be viewed by conference participants. The conference table is suited both for video conferences with conference participants who...
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4757494 |
Method for generating additive combinations of PCM voice samples
A method for generating additive combinations of PCM voice samples separates the samples into magnitude portions and sign portions. The magnitude portion of each PCM voice sample is converted from...
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4748618 |
Telecommunications interface
A telecommunications interface is disclosed. The inventive telecommunications interface is capable of collecting multiple asynchronous video, audio, graphic and data signals from a variety of...
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4747121 |
Remote control slide projector module
A slide projector control module and control system to operate one or more slide projectors located at one or more different locations, each slide projector having a slide tray and being connected...
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4741025 |
Speech additive distribution equipment for conferencing system
An audio bridge for a telephone conference is disclosed. The audio bridge; comprises a channel signal processing unit assigned to at least three channels. Each channel signal processing circuit...
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4737982 |
Reprogrammable call forwarding device
A call forwarding device (11) for forwarding phone (15) that is connected by a single forwarding phone line (13, 14) to central exchange telephone equipment (12). Equipment (12) has an electronic...
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4736407 |
Computer assisted graphic teleconferencing method and apparatus
An audiographic telephone conferencing system between a plurality of parties or users either directly connected or through a piece of apparatus known as a "meet me bridge" over voice grade...
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4734934 |
Binaural teleconferencing system
A teleconferencing bridge simulates the auditory spatial ambience of a face-to-face conference. This bridge uses a novel binaural approach to simulate spatial ambience.
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4730306 |
Conference system
A conference system is disclosed which is capable of freely setting the sound volume level by making the sound volume levels of the input and output of the conference circuit variable for each...
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4716585 |
Gain switched audio conferencing network
An audio conferencing system includes a plurality of remote stations (10) which are interconnected in a conference mode through a central switching network (66) through communication lines (16)....
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4712231 |
Teleconference system
A teleconferencing system for connection to telephone lines or other communication links. Directionally gated microphones receive local speech for audio send signal transmission to the far end on...
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4706244 |
Frequency multiplexed telephone system
A frequency multiplexed system for coupling a plurality of individual telephone sets to at least one subscriber telephone line. The system includes a line adapter unit for controlling use of...
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4682957 |
Teleconferencing and teaching method and apparatus
A live presentation utilizing quality visual or audio supporting material may be given at at least one remote location from an originating location by use of standard voice grade telephone serivce...
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4677609 |
Semi-automated directory assistance systems
A semi-automatic directory assistance system uses a directory assistance computer to help an operator at an operator position terminal find the requested directory number. The control processor, a...
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4677610 |
Three-port conference circuit for use in a digital telephone system
A three-port conference circuit for use in a pulse code modulated communication system including a first speaker register including an input connected to a telephone system information memory...
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4661949 |
Circuit for conference telephony
A circuit for conference telephony using a conventional system for transmission of voice data and having no use for the conventional hybrid station is materialized by this invention using at least...
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4658398 |
Framed digital voice summing for teleconferencing
In a teleconferencing system activity levels of digital voice signals are compared over activity selection times and the signals are multiplied, over frame delays, by predetermined constants...
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4656625 |
Switching system having capability for telecommunication conferences
A switching system having a capability for telecommunication conferences, including therein, at least, a speech path memory, a mixing circuit, and a feedback circuit. The speech path memory is...
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4648108 |
Conference circuits and methods of operating them
A conference circuit has a plurality of ports for a corresponding plurality of conferees. Associated with the ports is a control circuit which determines whether a conferee is active, i.e. talking,...
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4648089 |
Digital voice summing for teleconferencing
Digitally encoded voice signals are weighted dynamically in multipliers prior to summation of the digital signals. Greater weight is given to the more active channels. In one system, the signals...
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4645878 |
Arrangement for holding, accommodating, installing and connecting electrical apparatus for a conference table
A conference table assembly comprises a plurality of conference tables each having a top providing a writing surface for a user, and a plurality of accessory units sandwiched between adjacent...
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4646288 |
Multi-line accumulator/multiplexer
A multi-line accumulator/multiplexer for employment in a voice switching control system in order to provide that system with a plurality of full-duplex non-blocking lines with general purpose...
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4645872 |
Videophone network system
A controlled access automated-switching conferencing system includes a special microprocessor-controlled control console disposed at each of a plurality of stations. Each station includes video and...
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4644530 |
Instant speaker algorithm for digital conference bridge
Digital conference bridge for use with a plurality of telephones (#1 . . . #n) and arranged whereby in accordance with predetermined output conditions from the telephones, as existing from time to...
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4635252 |
Conference circuit for digital communication systems
A circuit arrangement for conference circuits in digital communications systems, particularly in PCM telephone systems, provide digitized voice signals of the conference participants which are...
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4600814 |
Automated system for establishing telephone voice connections
A computer inputed with a data base of potential call recipients and having an EIA RS-232 Data Communication Equipment interface drives an auto-call unit or dialer through a format conversion...
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4558180 |
Programmable audio mixer
Audio mixes for a plurality of conference locations are controllably obtained by using a matrix multiplication arrangement. The audio mixes for the individual conference locations are obtained by...
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4550224 |
Method and apparatus for adding conferees to a conference
In a telecommunications conference system, a warning tone is applied to a conference bridge to inform the participants that another conferee is about to be included in the conference. The conferee...
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4541087 |
Digital teleconferencing control device, system and method
A digital teleconferencing control device, system and method are disclosed for use in telecommunications. A digital conference control circuit having pulse code modulation and time division...
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4529842 |
Automatic fault recovery arrangement
A conference arrangement is disclosed having a plurality of logical multiport bridges for conferencing customer stations. Equipment units common to the bridges can be selectively connected to a...
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4509166 |
PCM Communication system and method of operation
Process and circuit for carrying out said process for control of the transmission of PCM signals between subscriber stations of a PCM time-division multiplex communication network in a conference...
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4495616 |
PCM Conference circuit
A conference circuit for controlling one or more conferences within a digital time division telecommunications system. The conference circuit uses the generally known loudest speaker approach....
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4488291 |
Circuit arrangement for setting up a conference call
A conference circuit in a digital telephone switching system includes a first code converter (CCL), which converts nonlinearly coded speech samples into linearly coded speech samples, and adder...
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4482997 |
Arrangement for reducing clipping in a digital conference arrangement
For use in a multichannel time division multiplexed conference arrangement where the samples in one time frame of simultaneous speakers are summed for distribution to each of the conferees, the...
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4482998 |
Method and apparatus for improving the quality of communication in a digital conference arrangement
For use in multiport digital conference arrangements adapted to sum speech samples of selected speakers, the disclosed method and apparatus improves the quality of communication by holding over...
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4479212 |
Conference circuit
In a digital, time division multiplex communication system, a first-in, first-out buffer (10) at each subscriber station is employed to establish a conference call. The digital words of the...
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4479195 |
Data conference system
A communications network having a multiport data conference system is disclosed. The data conference system includes a multilevel processor arrangement with the lower level port processors...
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4479211 |
Method and apparatus for controlling ports in a digital conference arrangement
For use in multiport digital conference arrangements wherein the speech samples of selected speakers are summed for distribution to the conferees, the disclosed arrangement features...
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4477696 |
Conference system for telephony
A conference system comprises a conference circuit to which a plurality of participants are connected via terminals respective connecting circuits having input and output circuits, the signal from...
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4477897 |
Linear time division multiplexed conferencer
There is disclosed a linear time division multiplexed time slot conferencer in which a summation of incoming message samples respective to a group of time slots are stored in a summation memory...
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4475189 |
Automatic interactive conference arrangement
A network services complex having an audio conference bridge, a data conference bridge, a tone receiver and a data store announcement system is disclosed. The complex is connected to a telephone...
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4475190 |
Method and apparatus for controlling ports in a digital conference arrangement
For use in multiport digital conference arrangements wherein the speech samples of selected speakers are included in an output sample for distribution to the conferees, the disclosed arrangement...
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4467143 |
Telephone conference amplifiers, and telephone conference bridges incorporating the same
In a telephone conference bridge, a conference port amplifier comprises amplifying means for providing signal amplification in both directions, the direction of amplification of the amplifier being...
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4456789 |
Audio teleconferencing
A control unit for controlling operation of a plurality of audio teleconference terminals comprises a plurality of inputs which are connected each to a particular terminal. A speech detector...
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4456792 |
Voice switching arrangement for telephone conferencing
In a telephone conference system, a voice switching arrangement allows a speaker who has seized the line to hear and thus permit an interrupting speaker an opportunity to talk. This arrangement is...
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4446554 |
Arrangement for multiple custom calling
The arrangement described herein provides for simple control and minimal program impact of a central office switching system for interfacing multiple custom calls. This arrangement employs a few...
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4425478 |
Conference system for telephony
A conference system for establishing simultaneous interchange of information among a plurality of participants (E o -E k ) comprises a conference network (CN). Each participant is connected to a...
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4360827 |
Method and means for interactive audio and video conferencing
A method and system for establishing an interactive audio and video conference. A plurality of geographically dispersed interactive sites are connected via the ordinary message telephone system to...
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4359606 |
Voice switching control system
Disclosed is an improved voice switching control system for controlling a plurality of voice switches disposed in voice signal transmission channels between at least two stations each including a...
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