Multi-direction time division multiplex communication apparatus

Details Multi-direction time division multiplex communication apparatus Multi-direction time division multiplex communication apparatus

1985-11-12

1987-10-27

Griffin, Robert L.

Multiplex communications

Wide area network

Packet switching

370100, 375 40, H04J 306

Patent

active

047034793

ABSTRACT:
A multi-direction time division multiplex communication apparatus for a central station in a multi-direction time division multiplex communication system in which the central station transmits signals meant for each of satellite stations in a time division multiplex broadcast mode, while each of the satellite stations after extraction of a clock extracts the signal meant for the own station and intermittently transmits signals from the own station after adjusting the signals to such a timing that, when the signals from the own station reach the satellite station, the signals do not overlap with signals reaching the central station from the other satellite stations and appear as orderly as a single sequence of time division multiplex signals. Despite any fluctuation of an absolute delay time which may occur during communication between the central and satellite stations due to variations in the ambient conditions, the central station selects the output of a particular code regenerator circuit which is operating responsive to a decision clock whose timing matches with the fluctuation, thereby allowing the system as a whole to hold a communication without having the error rate increased.

REFERENCES:
patent: 3628149 (1971-12-01), Swan
patent: 4063174 (1977-12-01), Gupta et al.
patent: 4412329 (1983-10-01), Yarborough, Jr.
patent: 4517682 (1985-05-01), Neyer

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