Time division multiplexing system

Details Time division multiplexing system Time division multiplexing system

1981-07-31

1983-10-18

Brigance, Gerald L.

Multiplex communications

Wide area network

Packet switching

370 84, 370102, H04J 318

Patent

active

044109806

ABSTRACT:
In a time division multiplexing system for multiplexing a plurality of channels having mutually-independent bit rates, the improvement wherein the pulse signals of each channel are converted into codes so that the information "1" is represented by a pulse having a width of two consecutive transmission clock periods ("0,0" or "1,1") the information "0" is represented by a pluse having a width of a single transmission clock period ("0" or "1"), and polarities of adjacent pulses are always different from each other; the pulse signals are compressed time-wise in a frame unit; and a frame synchronizing signal and a channel synchronizing signal, each consisting of marks or spaces having a duration of at least three consecutive transmission clock periods, are added to the intervals between the time-compressed frames to thereby perform time division multiplexing.

REFERENCES:
patent: 3636524 (1972-01-01), Holland
patent: 4132862 (1979-01-01), Ferret et al.
patent: 4174465 (1979-11-01), Meares et al.
patent: 4330856 (1982-05-01), Takasaki et al.

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