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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0893074 (1992-06-03) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 297 인용 특허 : 0 |
A video teleconferencing method and apparatus for computer workstations connected by a digital data network includes a transmission source portion for a local workstation to send audio and video teleconference data across the network to one or more remote workstations, and, a receiver for the local
A video teleconferencing method and apparatus for computer workstations connected by a digital data network includes a transmission source portion for a local workstation to send audio and video teleconference data across the network to one or more remote workstations, and, a receiver for the local workstation to receive audio and video teleconference data back from the remote workstations. The local workstation sends teleconference data to each of the remote workstations over a variable bandwidth digital data connection, and each of the remote workstations returns teleconference data back to the local workstation over another variable bandwidth digital data connection. The transmission source portion includes a master software process executing on the local workstation, and the receiver includes a slave software process executing the remote workstation. The master process of a local workstation causes execution of a slave process on a remote workstation for receiving video teleconference data from the local workstation. An audio data transmitter for sends an audio data stream to the remote workstation such that the audio data can be reconstructed into a continuous audio signal. A video transmitter sends video data so that each frame of video data to be sent is inserted into the audio data stream without affecting the continuity of the reconstructed audio signal at the remote workstation.
The video teleconferencing apparatus for a distributed data processing system having a plurality of computer workstations connected by a digital data network, the computer workstations comprising: a) a master process executing on a processor of a local workstation formating and sending audio and vid
The video teleconferencing apparatus for a distributed data processing system having a plurality of computer workstations connected by a digital data network, the computer workstations comprising: a) a master process executing on a processor of a local workstation formating and sending audio and video data across the digital data network as digital data packets to a remote workstation over a first variable bandwidth digital data connection; b) a slave process executing on a processor of the remote workstation receiving and reconstructing the audio and video data from across the digital data network from the master process of the local workstation for audible and visual reproduction, respectively; c) a master process executing on the processor of the remote workstation formatting and sending audio and video data across the digital data network as digital data packets to the local workstation over a second variable bandwidth digital data connection; and d) a slave process executing on the processor of the local workstation receiving the audio and video data from across the digital data network from the master process of the remote workstation for audible and visual reproduction, respectively; wherein the master process of the local workstation causes the execution of the slave process on the remote workstation to receive the audio and video data sent by the master process of the local workstation, the slave process of the remote workstation causes the execution of the master process on the remote workstation to send the audio and video data to the local workstation, and the master process of the remote workstation causes execution of the slave process on the local workstation to receive the audio and video data sent by the master process of the remote workstation.
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