Data line interface

Details Data line interface Data line interface

1982-03-18

1984-04-17

Griffin, Robert L.

Pulse or digital communications

Spread spectrum

Direct sequence

370 85, 179 2DP, 179 2C, H04L 514

Patent

active

044438842

ABSTRACT:
A data line interface for coupling an RS-232 line to a coaxial cable line, and for coupling a coaxial cable line to an RS-232 line is disclosed. The interface is responsive on the RS-232 side to a request to send (RTS) signal and a data signal (TXD) to couple the data signal to the coax line. Data signals received on the coax line provide a data signal (RCD) and carrier detect outputs on the RS-232 side of the interface. The interface is capable of asynchronous full duplex communication at 9600 baud or greater, and capable of effectively coupling two RS-232 compatible devices together in a manner which is transparent to the devices.

REFERENCES:
patent: 3691295 (1972-09-01), Fisk
patent: 4277646 (1981-07-01), Sams
patent: 4317205 (1982-02-01), Lam
patent: 4367374 (1983-01-01), Serrano
ATT Engineering Director "Data Access Arrangement CDT for Manual Originating and Answering Terminals" Bell System Data Communication, Jul. 1970.

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