Method of, and a terminal for, transmitting bytes to a bus

Details Method of, and a terminal for, transmitting bytes to a bus Method of, and a terminal for, transmitting bytes to a bus

1983-07-18

1986-02-04

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 89, 370109, 3701101, 3408255, H04J 302, H04J 312

Patent

active

045690464

ABSTRACT:
A plurality of terminals, such as digital telephones, are connected to a serial data bus formed by a balanced two-wire line. Each terminal transmits bytes bit-serially with the magnitude bits first, in order of decreasing significance, then the sign bit, and finally an even parity bit to maintain the balance of the line, the "1" bits being transmitted with alternating polarity. The terminals operate simultaneously and in synchronism. If a terminal, during a "0" bit of a byte which it is transmitting, detects a "1" pulse on the bus from another terminal, then it gives up transmission for the remainder of that byte and receives the greater magnitude byte which prevails on the bus. Thus a single two-wire line can be used for digital transmission in both directions between arbitrary numbers of telephones.

REFERENCES:
patent: 3710351 (1973-01-01), Nakamura
patent: 4106104 (1978-08-01), Nitta et al.
patent: 4162477 (1979-07-01), Munkberg
patent: 4210780 (1980-07-01), Hopkins et al.
patent: 4227178 (1980-09-01), Gergaud et al.
patent: 4229815 (1980-10-01), Cummiskey
patent: 4251880 (1981-02-01), Baugh et al.
patent: 4281380 (1981-07-01), Demasa et al.
patent: 4320502 (1982-03-01), de Veer
patent: 4342995 (1982-08-01), Shima
patent: 4355385 (1982-10-01), Hampshire et al.
patent: 4380052 (1983-04-01), Shima
patent: 4380065 (1983-04-01), Hietle et al.
patent: 4394756 (1983-07-01), Canniff
patent: 4434421 (1984-02-01), Bauer et al.
patent: 4445116 (1984-04-01), Glow
patent: 4463351 (1984-07-01), Chiarottino
patent: 4464749 (1984-08-01), Ulug
patent: 4488218 (1984-12-01), Grimes
Article entitled, "ISDN Subscriber Loop Protocol", by S. Lacher et al., International Zurich Seminar on Digital Communications, Mar. 1982.

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