Digital signal transmission system including means for convertin

Details Digital signal transmission system including means for convertin Digital signal transmission system including means for convertin

1980-02-06

1982-05-18

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370109, H04J 307

Patent

active

043308562

ABSTRACT:
In a digital signal transmission system wherein input digital signals having an arbitrary bit rate are converted into digital signals of a bit rate higher than that of the input digital signals and then transmitted through a signal format converter; in order to realize the signal format conversion in real time the signal format converter is constructed of a buffer circuit of small capacity, a circuit which writes the input signals into the buffer circuit at the bit rate of said input signals and which reads out the written signals at the bit rate of a transmission line, a circuit which distinguishes the signals to-be-read as a mark, space and empty, and an encoding circuit which converts the mark, space and empty into pulse signals discernible with the unit being a time slot of the transmission line or integral times the time slot, in dependence of the levels of pulses or the numbers of successive pulses (run length).

REFERENCES:
patent: 3636524 (1972-01-01), Holland
patent: 4058683 (1977-11-01), Fenoglio
patent: 4196315 (1980-04-01), Boutmy et al.

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