05375068 is referenced by 295 patents and cites 48 patents.

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.

Title
Video teleconferencing for networked workstations
Application Number
7/893074
Publication Number
5375068
Application Date
June 3, 1992
Publication Date
December 20, 1994
Inventor
Larry G Palmer
Nashua
NH, US
Ricky S Palmer
Nashua
NH, US
Agent
Hamilton Brook Smith & Reynolds
Assignee
Digital Equipment Corporation
MA, US
IPC
G06K 15/00
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