Lotus Development Corporation

Martin L Moeller

Mark Friedell

A video signal distribution hub for a video conferencing network in which workstations generate RF video signals. The hub includes a plurality of workstation ports, a plurality of hub ports, a first circuit module and a second circuit module. The first circuit module generates an output signal for each of the workstation ports by combining all of the video signals received over the input lines of all of the workstation ports and all of the hub ports to generate a combined signal. The video signal sent to the workstation port is derived from the combined signal. The second circuit module includes an RF amplifier for each of the hub ports. For each of the hub ports, the second circuit module combines the video signals received over the input lines of all of the workstation ports with the video signals received over the input lines of all of the other hub ports to generate a composite signal that is supplied to the input of the RF amplifier for that hub port.

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Watertown, MA, United States of America

Martin L Moeller