Synchronizing transmissions from two earth stations to satellite

Details Synchronizing transmissions from two earth stations to satellite Synchronizing transmissions from two earth stations to satellite

1979-08-06

1982-03-16

Stewart, David L.

Multiplex communications

Wide area network

Packet switching

455 12, 455105, H04J 306

Patent

active

043205038

ABSTRACT:
A method of synchronizing the transmissions of alternate video fields or frames from two earth stations over a common uplink channel to a satellite so that the fields or frames arrive in interleaved time periods. A synchronizing pulse is transmitted over a separate channel from a first station to the satellite and back, twice, and to the second station and back. The returned signals provide information for synchronizing transmissions from both stations.

REFERENCES:
patent: 3530252 (1970-09-01), Puente
patent: 3789142 (1974-01-01), Shimasaki
patent: 3813496 (1974-05-01), Maillet
patent: 3922496 (1975-11-01), Gabbard
patent: 4004098 (1977-01-01), Shimasaki

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