Matches 1 - 16 out of 16
Match Document Document Title
6810116 Multi-channel telephone data collection, collaboration and conferencing system and method of using the same  
A multi-channel telephone data collection, collaboration and conferencing system for use with a plurality of telephone channels, the telephone channels being interconnected to facilitate a...
6275474 Private digital communication apparatus for interconnecting a plurality of elements  
The invention relates to a private digital communication apparatus for interconnecting a plurality of interface modules which communicate through a common bus. In particular, it concerns a...
6072522 Video conferencing apparatus for group video conferencing  
A group video conferencing apparatus for the purposes of facilitating a video conference involving a group of participants which are azymuthly located about said apparatus is described. Means are...
5259035 Automatic microphone mixer  
An automatic microphone mixer for a multi-microphone audio system in which each microphone audio channel is provided with a control channel including a comparator that compares the microphone...
5029162 Automatic gain control using root-mean-square circuitry in a digital domain conference bridge for a telephone network  
An automatic gain control for an inputted multiplex PCM data stream in a conferencing bridge in a telephone system. The inputted multiplexed data stream has a predetermined number of time slots...
EP0301957A1 Method and circuit for control of audio conferences.  
The circuit is of the type containing n input channels (1) receiving speech signals originating from n participants and n speech-return output channels (2) on which are re-emitted speech signals...
4726016 Conference system  
A conference system, in which a buffer memory is connected to the input-output of each highway for storing all its channel data for each frame. The stored data is time-divided so that a time-length...
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...
EP0215167A1 I  
RE31814 Three-party conference circuit for digital time-division-multiplex communication systems  
A three-party conference circuit provides for three-party conference calls in time-division-multiplex communication systems utilizing pulse-code modulation. The digitized speech signals from a...
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....
4489442 Sound actuated microphone system  
A microphone channel is constructed from a pair of unidirectional microphone elements mounted back-to-back for monitoring sound coming from a predetermined area of space. The output signals of each...
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...
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...
4267593 Method and means for digital conferencing  
A digital conferencing arrangement for use in a digital telecommunications switching system. Digital coded signals representative of sampled analog signals are compared and the results of the...
4123620 Apparatus for controlling the sound generation in the loudspeakers of intercommunicating telephone sets in response to speech signals from the microphones of said telephone sets  
An apparatus for controlling the generation of sound in the loudspeakers of intercommunicating telephone sets in response to pulse-code modulated speech signals from the microphones of the...
Matches 1 - 16 out of 16