Multiplex communications – Wide area network – Packet switching
Patent
1987-03-31
1989-05-16
Griffin, Robert L.
Multiplex communications
Wide area network
Packet switching
455608, 455612, 455607, 370 4, 370 60, H04B 900
Patent
active
048316164
ABSTRACT:
A system for distributing wideband video information from a plurality of input sources to a plurality of users in which the input signals are converted into groups of packets of digital words, each packet corresponding to a video frame of information and each group comprising packets from a corresponding group of the input signals. The groups of packets are modulated onto optical signals which are multiplexed onto a single fiber optics line for transmission to the users. At the users, the signals are demultiplexed, demodulated, and input to a time domain routing switch which provides a predetermined number of output lines to each user. A control unit associated with each user issues control signals to the switch so as to route selected input signals to specified output lines to enable the user to access selectively and randomly any of the input signals.
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Beek L. Van
Griffin Robert L.
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