Video-telephone communications system
First Claim
Patent Images
1. A communication system for permitting simultaneous voice and video communication between two or more parties comprising:
- (i) a work station for each party, said work station including;
(a) audio means for providing audio communications via an audio transmission path,(b) video means for providing video communications via a video transmission path,(c) computer means for initiating and supporting audio and video communications over said transmission paths,(d) means for interfacing the video and audio means with said transmission paths responsive to said computer means;
(ii) network control means in said video transmission path for coordinating video communications among work stations including means for dynamically assigning transmit and receive frequencies for each participating work station and for dynamically reassigning receive frequencies during communication to achieve a video-follows-voice mode.
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Abstract
An auxiliary unit is used in conjunction with a personal computer based work station for interconnecting the work station to an audio-visual communications network. The auxiliary unit includes a CRT, a camera, a speaker phone circuit, and a CPU for interfacing these elements with each other and with the communications network to permit the transmission and reception of voice, video and computer graphics information.
377 Citations
13 Claims
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1. A communication system for permitting simultaneous voice and video communication between two or more parties comprising:
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(i) a work station for each party, said work station including; (a) audio means for providing audio communications via an audio transmission path, (b) video means for providing video communications via a video transmission path, (c) computer means for initiating and supporting audio and video communications over said transmission paths, (d) means for interfacing the video and audio means with said transmission paths responsive to said computer means; (ii) network control means in said video transmission path for coordinating video communications among work stations including means for dynamically assigning transmit and receive frequencies for each participating work station and for dynamically reassigning receive frequencies during communication to achieve a video-follows-voice mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A communication system for permitting simultaneous voice and video communication between two or more parties comprising:
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(i) a work station for each party, said work station including; (a) audio means for providing audio communications via an audio transmission path, (b) video means for providing video communications via a video transmission path, (c) computer means for initiating and supporting audio and video communications over said transmission paths, (d) means for interfacing the video and audio means with said transmission paths responsive to said computer means; (ii) network control means in said video transmission path for coordinating video communications among work stations including means for dynamically assigning transmit and receive frequencies for each participating station including; (a) a cable distribution unit for interconnecting the work stations in said video transmission path; a network control computer, also interconnected to the video transmission path, for communicating with the work station computer means and for controlling said means for dynamically assigning transmit and receive frequencies. - View Dependent Claims (13)
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12. A communication system for permitting simultaneous voice and video communication between two or more parties comprising:
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(i) a work station for each party, said work station including; (a) audio means for providing audio communications via an audio transmission path, (b) video means for providing video communications via a video transmission path, (c) computer means for initiating and supporting audio and video communications over said transmission paths, (d) means for interfacing the video and audio means with said transmission paths responsive to said computer means; (ii) network control means in said video transmission path for coordinating video communications among work stations including means for dynamically assigning transmit and receive frequencies for each participating work station, said means for dynamically assigning transmit and receive frequencies includes a frequency translator for shifting the transmitting frequencies by a selected offset to create receiving frequencies.
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Specification