Half-duplex digital transmission system

Details Half-duplex digital transmission system Half-duplex digital transmission system

1981-03-26

1983-06-07

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

370 61, 370 94, 370 97, 370117, 455 15, 455 18, H04B 714

Patent

active

043874665

ABSTRACT:
The system comprises two terminal stations connected through a two-wire transmission line including bidirectional repeaters. The duration of each half-duplex cycle between successive emissions of two digital packets from a terminal station is independent of the length or range of the line. In particular, the half-duplex cycle duration is less than the transmission duration of two packets along two opposite transmission directions for a line having a great length. The system is characterized in that at least one of repeaters comprises a memorizing circuit for delaying each packet which is received along one of the transmission directions, with at least two times the duration of a packet, thereby retransmit it after the transit of another packet along the other transmission duration through the repeater.

REFERENCES:
patent: 1568891 (1926-01-01), Espenschied
patent: 2666845 (1954-01-01), Colton et al.
patent: 3611435 (1971-10-01), Cooper
patent: 3646441 (1972-02-01), Magnuski
patent: 4135156 (1979-01-01), Sanders, Jr.
patent: 4232197 (1980-11-01), Acampora et al.

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